diff --git a/libs/asm-7.1.jar b/libs/asm-7.1.jar new file mode 100644 index 000000000..355eb08db Binary files /dev/null and b/libs/asm-7.1.jar differ diff --git a/libs/asm-analysis-7.1.jar b/libs/asm-analysis-7.1.jar new file mode 100644 index 000000000..9b529c6c9 Binary files /dev/null and b/libs/asm-analysis-7.1.jar differ diff --git a/libs/asm-commons-7.1.jar b/libs/asm-commons-7.1.jar new file mode 100644 index 000000000..31ffb987d Binary files /dev/null and b/libs/asm-commons-7.1.jar differ diff --git a/libs/asm-tree-7.1.jar b/libs/asm-tree-7.1.jar new file mode 100644 index 000000000..8e9ddbd97 Binary files /dev/null and b/libs/asm-tree-7.1.jar differ diff --git a/src/org/objectweb/asm/AnnotationVisitor.java b/src/org/objectweb/asm/AnnotationVisitor.java deleted file mode 100644 index 867d95200..000000000 --- a/src/org/objectweb/asm/AnnotationVisitor.java +++ /dev/null @@ -1,158 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A visitor to visit a Java annotation. The methods of this class must be - * called in the following order: ( visit | visitEnum | - * visitAnnotation | visitArray )* visitEnd. - * - * @author Eric Bruneton - * @author Eugene Kuleshov - */ -public abstract class AnnotationVisitor { - - /** - * The ASM API version implemented by this visitor. The value of this field - * must be one of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - protected final int api; - - /** - * The annotation visitor to which this visitor must delegate method calls. - * May be null. - */ - protected AnnotationVisitor av; - - /** - * Constructs a new {@link AnnotationVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - public AnnotationVisitor(final int api) { - this(api, null); - } - - /** - * Constructs a new {@link AnnotationVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - * @param av the annotation visitor to which this visitor must delegate - * method calls. May be null. - */ - public AnnotationVisitor(final int api, final AnnotationVisitor av) { - if (api != Opcodes.ASM4 && api != Opcodes.ASM5) { - throw new IllegalArgumentException(); - } - this.api = api; - this.av = av; - } - - /** - * Visits a primitive value of the annotation. - * - * @param name the value name. - * @param value the actual value, whose type must be {@link Byte}, - * {@link Boolean}, {@link Character}, {@link Short}, - * {@link Integer} , {@link Long}, {@link Float}, {@link Double}, - * {@link String} or {@link Type} or OBJECT or ARRAY sort. This - * value can also be an array of byte, boolean, short, char, int, - * long, float or double values (this is equivalent to using - * {@link #visitArray visitArray} and visiting each array element - * in turn, but is more convenient). - */ - public void visit(String name, Object value) { - if (av != null) { - av.visit(name, value); - } - } - - /** - * Visits an enumeration value of the annotation. - * - * @param name the value name. - * @param desc the class descriptor of the enumeration class. - * @param value the actual enumeration value. - */ - public void visitEnum(String name, String desc, String value) { - if (av != null) { - av.visitEnum(name, desc, value); - } - } - - /** - * Visits a nested annotation value of the annotation. - * - * @param name the value name. - * @param desc the class descriptor of the nested annotation class. - * @return a visitor to visit the actual nested annotation value, or - * null if this visitor is not interested in visiting this - * nested annotation. The nested annotation value must be fully - * visited before calling other methods on this annotation - * visitor. - */ - public AnnotationVisitor visitAnnotation(String name, String desc) { - if (av != null) { - return av.visitAnnotation(name, desc); - } - return null; - } - - /** - * Visits an array value of the annotation. Note that arrays of primitive - * types (such as byte, boolean, short, char, int, long, float or double) - * can be passed as value to {@link #visit visit}. This is what - * {@link ClassReader} does. - * - * @param name the value name. - * @return a visitor to visit the actual array value elements, or - * null if this visitor is not interested in visiting these - * values. The 'name' parameters passed to the methods of this - * visitor are ignored. All the array values must be visited - * before calling other methods on this annotation visitor. - */ - public AnnotationVisitor visitArray(String name) { - if (av != null) { - return av.visitArray(name); - } - return null; - } - - /** - * Visits the end of the annotation. - */ - public void visitEnd() { - if (av != null) { - av.visitEnd(); - } - } -} diff --git a/src/org/objectweb/asm/AnnotationWriter.java b/src/org/objectweb/asm/AnnotationWriter.java deleted file mode 100644 index d4d41702c..000000000 --- a/src/org/objectweb/asm/AnnotationWriter.java +++ /dev/null @@ -1,359 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * An {@link AnnotationVisitor} that generates annotations in bytecode form. - * - * @author Eric Bruneton - * @author Eugene Kuleshov - */ -final class AnnotationWriter extends AnnotationVisitor { - - /** - * The class writer to which this annotation must be added. - */ - private final ClassWriter cw; - - /** - * The number of values in this annotation. - */ - private int size; - - /** - * true if values are named, false otherwise. Annotation - * writers used for annotation default and annotation arrays use unnamed - * values. - */ - private final boolean named; - - /** - * The annotation values in bytecode form. This byte vector only contains - * the values themselves, i.e. the number of values must be stored as a - * unsigned short just before these bytes. - */ - private final ByteVector bv; - - /** - * The byte vector to be used to store the number of values of this - * annotation. See {@link #bv}. - */ - private final ByteVector parent; - - /** - * Where the number of values of this annotation must be stored in - * {@link #parent}. - */ - private final int offset; - - /** - * Next annotation writer. This field is used to store annotation lists. - */ - AnnotationWriter next; - - /** - * Previous annotation writer. This field is used to store annotation lists. - */ - AnnotationWriter prev; - - // ------------------------------------------------------------------------ - // Constructor - // ------------------------------------------------------------------------ - - /** - * Constructs a new {@link AnnotationWriter}. - * - * @param cw the class writer to which this annotation must be added. - * @param named true if values are named, false otherwise. - * @param bv where the annotation values must be stored. - * @param parent where the number of annotation values must be stored. - * @param offset where in parent the number of annotation values must - * be stored. - */ - AnnotationWriter(final ClassWriter cw, final boolean named, - final ByteVector bv, final ByteVector parent, final int offset) { - super(Opcodes.ASM5); - this.cw = cw; - this.named = named; - this.bv = bv; - this.parent = parent; - this.offset = offset; - } - - // ------------------------------------------------------------------------ - // Implementation of the AnnotationVisitor abstract class - // ------------------------------------------------------------------------ - - @Override - public void visit(final String name, final Object value) { - ++size; - if (named) { - bv.putShort(cw.newUTF8(name)); - } - if (value instanceof String) { - bv.put12('s', cw.newUTF8((String) value)); - } else if (value instanceof Byte) { - bv.put12('B', cw.newInteger(((Byte) value).byteValue()).index); - } else if (value instanceof Boolean) { - int v = ((Boolean) value).booleanValue() ? 1 : 0; - bv.put12('Z', cw.newInteger(v).index); - } else if (value instanceof Character) { - bv.put12('C', cw.newInteger(((Character) value).charValue()).index); - } else if (value instanceof Short) { - bv.put12('S', cw.newInteger(((Short) value).shortValue()).index); - } else if (value instanceof Type) { - bv.put12('c', cw.newUTF8(((Type) value).getDescriptor())); - } else if (value instanceof byte[]) { - byte[] v = (byte[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('B', cw.newInteger(v[i]).index); - } - } else if (value instanceof boolean[]) { - boolean[] v = (boolean[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('Z', cw.newInteger(v[i] ? 1 : 0).index); - } - } else if (value instanceof short[]) { - short[] v = (short[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('S', cw.newInteger(v[i]).index); - } - } else if (value instanceof char[]) { - char[] v = (char[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('C', cw.newInteger(v[i]).index); - } - } else if (value instanceof int[]) { - int[] v = (int[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('I', cw.newInteger(v[i]).index); - } - } else if (value instanceof long[]) { - long[] v = (long[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('J', cw.newLong(v[i]).index); - } - } else if (value instanceof float[]) { - float[] v = (float[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('F', cw.newFloat(v[i]).index); - } - } else if (value instanceof double[]) { - double[] v = (double[]) value; - bv.put12('[', v.length); - for (int i = 0; i < v.length; i++) { - bv.put12('D', cw.newDouble(v[i]).index); - } - } else { - Item i = cw.newConstItem(value); - bv.put12(".s.IFJDCS".charAt(i.type), i.index); - } - } - - @Override - public void visitEnum(final String name, final String desc, - final String value) { - ++size; - if (named) { - bv.putShort(cw.newUTF8(name)); - } - bv.put12('e', cw.newUTF8(desc)).putShort(cw.newUTF8(value)); - } - - @Override - public AnnotationVisitor visitAnnotation(final String name, - final String desc) { - ++size; - if (named) { - bv.putShort(cw.newUTF8(name)); - } - // write tag and type, and reserve space for values count - bv.put12('@', cw.newUTF8(desc)).putShort(0); - return new AnnotationWriter(cw, true, bv, bv, bv.length - 2); - } - - @Override - public AnnotationVisitor visitArray(final String name) { - ++size; - if (named) { - bv.putShort(cw.newUTF8(name)); - } - // write tag, and reserve space for array size - bv.put12('[', 0); - return new AnnotationWriter(cw, false, bv, bv, bv.length - 2); - } - - @Override - public void visitEnd() { - if (parent != null) { - byte[] data = parent.data; - data[offset] = (byte) (size >>> 8); - data[offset + 1] = (byte) size; - } - } - - // ------------------------------------------------------------------------ - // Utility methods - // ------------------------------------------------------------------------ - - /** - * Returns the size of this annotation writer list. - * - * @return the size of this annotation writer list. - */ - int getSize() { - int size = 0; - AnnotationWriter aw = this; - while (aw != null) { - size += aw.bv.length; - aw = aw.next; - } - return size; - } - - /** - * Puts the annotations of this annotation writer list into the given byte - * vector. - * - * @param out where the annotations must be put. - */ - void put(final ByteVector out) { - int n = 0; - int size = 2; - AnnotationWriter aw = this; - AnnotationWriter last = null; - while (aw != null) { - ++n; - size += aw.bv.length; - aw.visitEnd(); // in case user forgot to call visitEnd - aw.prev = last; - last = aw; - aw = aw.next; - } - out.putInt(size); - out.putShort(n); - aw = last; - while (aw != null) { - out.putByteArray(aw.bv.data, 0, aw.bv.length); - aw = aw.prev; - } - } - - /** - * Puts the given annotation lists into the given byte vector. - * - * @param panns an array of annotation writer lists. - * @param off index of the first annotation to be written. - * @param out where the annotations must be put. - */ - static void put(final AnnotationWriter[] panns, final int off, - final ByteVector out) { - int size = 1 + 2 * (panns.length - off); - for (int i = off; i < panns.length; ++i) { - size += panns[i] == null ? 0 : panns[i].getSize(); - } - out.putInt(size).putByte(panns.length - off); - for (int i = off; i < panns.length; ++i) { - AnnotationWriter aw = panns[i]; - AnnotationWriter last = null; - int n = 0; - while (aw != null) { - ++n; - aw.visitEnd(); // in case user forgot to call visitEnd - aw.prev = last; - last = aw; - aw = aw.next; - } - out.putShort(n); - aw = last; - while (aw != null) { - out.putByteArray(aw.bv.data, 0, aw.bv.length); - aw = aw.prev; - } - } - } - - /** - * Puts the given type reference and type path into the given bytevector. - * LOCAL_VARIABLE and RESOURCE_VARIABLE target types are not supported. - * - * @param typeRef a reference to the annotated type. See {@link TypeReference}. - * @param typePath the path to the annotated type argument, wildcard bound, array - * element type, or static inner type within 'typeRef'. May be - * null if the annotation targets 'typeRef' as a whole. - * @param out where the type reference and type path must be put. - */ - static void putTarget(int typeRef, TypePath typePath, ByteVector out) { - switch (typeRef >>> 24) { - case 0x00: // CLASS_TYPE_PARAMETER - case 0x01: // METHOD_TYPE_PARAMETER - case 0x16: // METHOD_FORMAL_PARAMETER - out.putShort(typeRef >>> 16); - break; - case 0x13: // FIELD - case 0x14: // METHOD_RETURN - case 0x15: // METHOD_RECEIVER - out.putByte(typeRef >>> 24); - break; - case 0x47: // CAST - case 0x48: // CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT - case 0x49: // METHOD_INVOCATION_TYPE_ARGUMENT - case 0x4A: // CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT - case 0x4B: // METHOD_REFERENCE_TYPE_ARGUMENT - out.putInt(typeRef); - break; - // case 0x10: // CLASS_EXTENDS - // case 0x11: // CLASS_TYPE_PARAMETER_BOUND - // case 0x12: // METHOD_TYPE_PARAMETER_BOUND - // case 0x17: // THROWS - // case 0x42: // EXCEPTION_PARAMETER - // case 0x43: // INSTANCEOF - // case 0x44: // NEW - // case 0x45: // CONSTRUCTOR_REFERENCE - // case 0x46: // METHOD_REFERENCE - default: - out.put12(typeRef >>> 24, (typeRef & 0xFFFF00) >> 8); - break; - } - if (typePath == null) { - out.putByte(0); - } else { - int length = typePath.b[typePath.offset] * 2 + 1; - out.putByteArray(typePath.b, typePath.offset, length); - } - } -} diff --git a/src/org/objectweb/asm/Attribute.java b/src/org/objectweb/asm/Attribute.java deleted file mode 100644 index 9e33d9e3b..000000000 --- a/src/org/objectweb/asm/Attribute.java +++ /dev/null @@ -1,232 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A non standard class, field, method or code attribute. - * - * @author Eric Bruneton - * @author Eugene Kuleshov - */ -public class Attribute { - - /** - * The type of this attribute. - */ - public final String type; - - /** - * The raw value of this attribute, used only for unknown attributes. - */ - public byte[] value; - - /** - * The next attribute in this attribute list. May be null. - */ - Attribute next; - - /** - * Constructs a new empty attribute. - * - * @param type the type of the attribute. - */ - protected Attribute(final String type) { - this.type = type; - } - - /** - * Returns true if this type of attribute is unknown. The default - * implementation of this method always returns true. - * - * @return true if this type of attribute is unknown. - */ - public boolean isUnknown() { - return true; - } - - /** - * Returns true if this type of attribute is a code attribute. - * - * @return true if this type of attribute is a code attribute. - */ - public boolean isCodeAttribute() { - return false; - } - - /** - * Returns the labels corresponding to this attribute. - * - * @return the labels corresponding to this attribute, or null if - * this attribute is not a code attribute that contains labels. - */ - protected Label[] getLabels() { - return null; - } - - /** - * Reads a {@link #type type} attribute. This method must return a - * new {@link Attribute} object, of type {@link #type type}, - * corresponding to the len bytes starting at the given offset, in - * the given class reader. - * - * @param cr the class that contains the attribute to be read. - * @param off index of the first byte of the attribute's content in - * {@link ClassReader#b cr.b}. The 6 attribute header bytes, - * containing the type and the length of the attribute, are not - * taken into account here. - * @param len the length of the attribute's content. - * @param buf buffer to be used to call {@link ClassReader#readUTF8 - * readUTF8}, {@link ClassReader#readClass(int, char[]) readClass} - * or {@link ClassReader#readConst readConst}. - * @param codeOff index of the first byte of code's attribute content in - * {@link ClassReader#b cr.b}, or -1 if the attribute to be read - * is not a code attribute. The 6 attribute header bytes, - * containing the type and the length of the attribute, are not - * taken into account here. - * @param labels the labels of the method's code, or null if the - * attribute to be read is not a code attribute. - * @return a new {@link Attribute} object corresponding to the given - * bytes. - */ - protected Attribute read(final ClassReader cr, final int off, - final int len, final char[] buf, final int codeOff, - final Label[] labels) { - Attribute attr = new Attribute(type); - attr.value = new byte[len]; - System.arraycopy(cr.b, off, attr.value, 0, len); - return attr; - } - - /** - * Returns the byte array form of this attribute. - * - * @param cw the class to which this attribute must be added. This - * parameter can be used to add to the constant pool of this - * class the items that corresponds to this attribute. - * @param code the bytecode of the method corresponding to this code - * attribute, or null if this attribute is not a code - * attributes. - * @param len the length of the bytecode of the method corresponding to this - * code attribute, or null if this attribute is not a - * code attribute. - * @param maxStack the maximum stack size of the method corresponding to this - * code attribute, or -1 if this attribute is not a code - * attribute. - * @param maxLocals the maximum number of local variables of the method - * corresponding to this code attribute, or -1 if this attribute - * is not a code attribute. - * @return the byte array form of this attribute. - */ - protected ByteVector write(final ClassWriter cw, final byte[] code, - final int len, final int maxStack, final int maxLocals) { - ByteVector v = new ByteVector(); - v.data = value; - v.length = value.length; - return v; - } - - /** - * Returns the length of the attribute list that begins with this attribute. - * - * @return the length of the attribute list that begins with this attribute. - */ - final int getCount() { - int count = 0; - Attribute attr = this; - while (attr != null) { - count += 1; - attr = attr.next; - } - return count; - } - - /** - * Returns the size of all the attributes in this attribute list. - * - * @param cw the class writer to be used to convert the attributes into - * byte arrays, with the {@link #write write} method. - * @param code the bytecode of the method corresponding to these code - * attributes, or null if these attributes are not code - * attributes. - * @param len the length of the bytecode of the method corresponding to - * these code attributes, or null if these attributes - * are not code attributes. - * @param maxStack the maximum stack size of the method corresponding to these - * code attributes, or -1 if these attributes are not code - * attributes. - * @param maxLocals the maximum number of local variables of the method - * corresponding to these code attributes, or -1 if these - * attributes are not code attributes. - * @return the size of all the attributes in this attribute list. This size - * includes the size of the attribute headers. - */ - final int getSize(final ClassWriter cw, final byte[] code, final int len, - final int maxStack, final int maxLocals) { - Attribute attr = this; - int size = 0; - while (attr != null) { - cw.newUTF8(attr.type); - size += attr.write(cw, code, len, maxStack, maxLocals).length + 6; - attr = attr.next; - } - return size; - } - - /** - * Writes all the attributes of this attribute list in the given byte - * vector. - * - * @param cw the class writer to be used to convert the attributes into - * byte arrays, with the {@link #write write} method. - * @param code the bytecode of the method corresponding to these code - * attributes, or null if these attributes are not code - * attributes. - * @param len the length of the bytecode of the method corresponding to - * these code attributes, or null if these attributes - * are not code attributes. - * @param maxStack the maximum stack size of the method corresponding to these - * code attributes, or -1 if these attributes are not code - * attributes. - * @param maxLocals the maximum number of local variables of the method - * corresponding to these code attributes, or -1 if these - * attributes are not code attributes. - * @param out where the attributes must be written. - */ - final void put(final ClassWriter cw, final byte[] code, final int len, - final int maxStack, final int maxLocals, final ByteVector out) { - Attribute attr = this; - while (attr != null) { - ByteVector b = attr.write(cw, code, len, maxStack, maxLocals); - out.putShort(cw.newUTF8(attr.type)).putInt(b.length); - out.putByteArray(b.data, 0, b.length); - attr = attr.next; - } - } -} diff --git a/src/org/objectweb/asm/ByteVector.java b/src/org/objectweb/asm/ByteVector.java deleted file mode 100644 index ac752bbf6..000000000 --- a/src/org/objectweb/asm/ByteVector.java +++ /dev/null @@ -1,322 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A dynamically extensible vector of bytes. This class is roughly equivalent to - * a DataOutputStream on top of a ByteArrayOutputStream, but is more efficient. - * - * @author Eric Bruneton - */ -public class ByteVector { - - /** - * The content of this vector. - */ - byte[] data; - - /** - * Actual number of bytes in this vector. - */ - int length; - - /** - * Constructs a new {@link ByteVector ByteVector} with a default initial - * size. - */ - public ByteVector() { - data = new byte[64]; - } - - /** - * Constructs a new {@link ByteVector ByteVector} with the given initial - * size. - * - * @param initialSize the initial size of the byte vector to be constructed. - */ - public ByteVector(final int initialSize) { - data = new byte[initialSize]; - } - - /** - * Puts a byte into this byte vector. The byte vector is automatically - * enlarged if necessary. - * - * @param b a byte. - * @return this byte vector. - */ - public ByteVector putByte(final int b) { - int length = this.length; - if (length + 1 > data.length) { - enlarge(1); - } - data[length++] = (byte) b; - this.length = length; - return this; - } - - /** - * Puts two bytes into this byte vector. The byte vector is automatically - * enlarged if necessary. - * - * @param b1 a byte. - * @param b2 another byte. - * @return this byte vector. - */ - ByteVector put11(final int b1, final int b2) { - int length = this.length; - if (length + 2 > data.length) { - enlarge(2); - } - byte[] data = this.data; - data[length++] = (byte) b1; - data[length++] = (byte) b2; - this.length = length; - return this; - } - - /** - * Puts a short into this byte vector. The byte vector is automatically - * enlarged if necessary. - * - * @param s a short. - * @return this byte vector. - */ - public ByteVector putShort(final int s) { - int length = this.length; - if (length + 2 > data.length) { - enlarge(2); - } - byte[] data = this.data; - data[length++] = (byte) (s >>> 8); - data[length++] = (byte) s; - this.length = length; - return this; - } - - /** - * Puts a byte and a short into this byte vector. The byte vector is - * automatically enlarged if necessary. - * - * @param b a byte. - * @param s a short. - * @return this byte vector. - */ - ByteVector put12(final int b, final int s) { - int length = this.length; - if (length + 3 > data.length) { - enlarge(3); - } - byte[] data = this.data; - data[length++] = (byte) b; - data[length++] = (byte) (s >>> 8); - data[length++] = (byte) s; - this.length = length; - return this; - } - - /** - * Puts an int into this byte vector. The byte vector is automatically - * enlarged if necessary. - * - * @param i an int. - * @return this byte vector. - */ - public ByteVector putInt(final int i) { - int length = this.length; - if (length + 4 > data.length) { - enlarge(4); - } - byte[] data = this.data; - data[length++] = (byte) (i >>> 24); - data[length++] = (byte) (i >>> 16); - data[length++] = (byte) (i >>> 8); - data[length++] = (byte) i; - this.length = length; - return this; - } - - /** - * Puts a long into this byte vector. The byte vector is automatically - * enlarged if necessary. - * - * @param l a long. - * @return this byte vector. - */ - public ByteVector putLong(final long l) { - int length = this.length; - if (length + 8 > data.length) { - enlarge(8); - } - byte[] data = this.data; - int i = (int) (l >>> 32); - data[length++] = (byte) (i >>> 24); - data[length++] = (byte) (i >>> 16); - data[length++] = (byte) (i >>> 8); - data[length++] = (byte) i; - i = (int) l; - data[length++] = (byte) (i >>> 24); - data[length++] = (byte) (i >>> 16); - data[length++] = (byte) (i >>> 8); - data[length++] = (byte) i; - this.length = length; - return this; - } - - /** - * Puts an UTF8 string into this byte vector. The byte vector is - * automatically enlarged if necessary. - * - * @param s a String whose UTF8 encoded length must be less than 65536. - * @return this byte vector. - */ - public ByteVector putUTF8(final String s) { - int charLength = s.length(); - if (charLength > 65535) { - throw new IllegalArgumentException(); - } - int len = length; - if (len + 2 + charLength > data.length) { - enlarge(2 + charLength); - } - byte[] data = this.data; - // optimistic algorithm: instead of computing the byte length and then - // serializing the string (which requires two loops), we assume the byte - // length is equal to char length (which is the most frequent case), and - // we start serializing the string right away. During the serialization, - // if we find that this assumption is wrong, we continue with the - // general method. - data[len++] = (byte) (charLength >>> 8); - data[len++] = (byte) charLength; - for (int i = 0; i < charLength; ++i) { - char c = s.charAt(i); - if (c >= '\001' && c <= '\177') { - data[len++] = (byte) c; - } else { - length = len; - return encodeUTF8(s, i, 65535); - } - } - length = len; - return this; - } - - /** - * Puts an UTF8 string into this byte vector. The byte vector is - * automatically enlarged if necessary. The string length is encoded in two - * bytes before the encoded characters, if there is space for that (i.e. if - * this.length - i - 2 >= 0). - * - * @param s the String to encode. - * @param i the index of the first character to encode. The previous - * characters are supposed to have already been encoded, using - * only one byte per character. - * @param maxByteLength the maximum byte length of the encoded string, including the - * already encoded characters. - * @return this byte vector. - */ - ByteVector encodeUTF8(final String s, int i, int maxByteLength) { - int charLength = s.length(); - int byteLength = i; - char c; - for (int j = i; j < charLength; ++j) { - c = s.charAt(j); - if (c >= '\001' && c <= '\177') { - byteLength++; - } else if (c > '\u07FF') { - byteLength += 3; - } else { - byteLength += 2; - } - } - if (byteLength > maxByteLength) { - throw new IllegalArgumentException(); - } - int start = length - i - 2; - if (start >= 0) { - data[start] = (byte) (byteLength >>> 8); - data[start + 1] = (byte) byteLength; - } - if (length + byteLength - i > data.length) { - enlarge(byteLength - i); - } - int len = length; - for (int j = i; j < charLength; ++j) { - c = s.charAt(j); - if (c >= '\001' && c <= '\177') { - data[len++] = (byte) c; - } else if (c > '\u07FF') { - data[len++] = (byte) (0xE0 | c >> 12 & 0xF); - data[len++] = (byte) (0x80 | c >> 6 & 0x3F); - data[len++] = (byte) (0x80 | c & 0x3F); - } else { - data[len++] = (byte) (0xC0 | c >> 6 & 0x1F); - data[len++] = (byte) (0x80 | c & 0x3F); - } - } - length = len; - return this; - } - - /** - * Puts an array of bytes into this byte vector. The byte vector is - * automatically enlarged if necessary. - * - * @param b an array of bytes. May be null to put len - * null bytes into this byte vector. - * @param off index of the fist byte of b that must be copied. - * @param len number of bytes of b that must be copied. - * @return this byte vector. - */ - public ByteVector putByteArray(final byte[] b, final int off, final int len) { - if (length + len > data.length) { - enlarge(len); - } - if (b != null) { - System.arraycopy(b, off, data, length, len); - } - length += len; - return this; - } - - /** - * Enlarge this byte vector so that it can receive n more bytes. - * - * @param size number of additional bytes that this byte vector should be - * able to receive. - */ - private void enlarge(final int size) { - int length1 = 2 * data.length; - int length2 = length + size; - byte[] newData = new byte[length1 > length2 ? length1 : length2]; - System.arraycopy(data, 0, newData, 0, length); - data = newData; - } -} diff --git a/src/org/objectweb/asm/ClassReader.java b/src/org/objectweb/asm/ClassReader.java deleted file mode 100644 index 30d36eb20..000000000 --- a/src/org/objectweb/asm/ClassReader.java +++ /dev/null @@ -1,2424 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -import java.io.IOException; -import java.io.InputStream; - -/** - * A Java class parser to make a {@link ClassVisitor} visit an existing class. - * This class parses a byte array conforming to the Java class file format and - * calls the appropriate visit methods of a given class visitor for each field, - * method and bytecode instruction encountered. - * - * @author Eric Bruneton - * @author Eugene Kuleshov - */ -public class ClassReader { - - /** - * True to enable signatures support. - */ - static final boolean SIGNATURES = true; - - /** - * True to enable annotations support. - */ - static final boolean ANNOTATIONS = true; - - /** - * True to enable stack map frames support. - */ - static final boolean FRAMES = true; - - /** - * True to enable bytecode writing support. - */ - static final boolean WRITER = true; - - /** - * True to enable JSR_W and GOTO_W support. - */ - static final boolean RESIZE = true; - - /** - * Flag to skip method code. If this class is set CODE - * attribute won't be visited. This can be used, for example, to retrieve - * annotations for methods and method parameters. - */ - public static final int SKIP_CODE = 1; - - /** - * Flag to skip the debug information in the class. If this flag is set the - * debug information of the class is not visited, i.e. the - * {@link MethodVisitor#visitLocalVariable visitLocalVariable} and - * {@link MethodVisitor#visitLineNumber visitLineNumber} methods will not be - * called. - */ - public static final int SKIP_DEBUG = 2; - - /** - * Flag to skip the stack map frames in the class. If this flag is set the - * stack map frames of the class is not visited, i.e. the - * {@link MethodVisitor#visitFrame visitFrame} method will not be called. - * This flag is useful when the {@link ClassWriter#COMPUTE_FRAMES} option is - * used: it avoids visiting frames that will be ignored and recomputed from - * scratch in the class writer. - */ - public static final int SKIP_FRAMES = 4; - - /** - * Flag to expand the stack map frames. By default stack map frames are - * visited in their original format (i.e. "expanded" for classes whose - * version is less than V1_6, and "compressed" for the other classes). If - * this flag is set, stack map frames are always visited in expanded format - * (this option adds a decompression/recompression step in ClassReader and - * ClassWriter which degrades performances quite a lot). - */ - public static final int EXPAND_FRAMES = 8; - - /** - * The class to be parsed. The content of this array must not be - * modified. This field is intended for {@link Attribute} sub classes, and - * is normally not needed by class generators or adapters. - */ - public final byte[] b; - - /** - * The start index of each constant pool item in {@link #b b}, plus one. The - * one byte offset skips the constant pool item tag that indicates its type. - */ - private final int[] items; - - /** - * The String objects corresponding to the CONSTANT_Utf8 items. This cache - * avoids multiple parsing of a given CONSTANT_Utf8 constant pool item, - * which GREATLY improves performances (by a factor 2 to 3). This caching - * strategy could be extended to all constant pool items, but its benefit - * would not be so great for these items (because they are much less - * expensive to parse than CONSTANT_Utf8 items). - */ - private final String[] strings; - - /** - * Maximum length of the strings contained in the constant pool of the - * class. - */ - private final int maxStringLength; - - /** - * Start index of the class header information (access, name...) in - * {@link #b b}. - */ - public final int header; - - // ------------------------------------------------------------------------ - // Constructors - // ------------------------------------------------------------------------ - - /** - * Constructs a new {@link ClassReader} object. - * - * @param b the bytecode of the class to be read. - */ - public ClassReader(final byte[] b) { - this(b, 0, b.length); - } - - /** - * Constructs a new {@link ClassReader} object. - * - * @param b the bytecode of the class to be read. - * @param off the start offset of the class data. - * @param len the length of the class data. - */ - public ClassReader(final byte[] b, final int off, final int len) { - this.b = b; - // checks the class version - if (readShort(off + 6) > Opcodes.V1_8) { - throw new IllegalArgumentException(); - } - // parses the constant pool - items = new int[readUnsignedShort(off + 8)]; - int n = items.length; - strings = new String[n]; - int max = 0; - int index = off + 10; - for (int i = 1; i < n; ++i) { - items[i] = index + 1; - int size; - switch (b[index]) { - case ClassWriter.FIELD: - case ClassWriter.METH: - case ClassWriter.IMETH: - case ClassWriter.INT: - case ClassWriter.FLOAT: - case ClassWriter.NAME_TYPE: - case ClassWriter.INDY: - size = 5; - break; - case ClassWriter.LONG: - case ClassWriter.DOUBLE: - size = 9; - ++i; - break; - case ClassWriter.UTF8: - size = 3 + readUnsignedShort(index + 1); - if (size > max) { - max = size; - } - break; - case ClassWriter.HANDLE: - size = 4; - break; - // case ClassWriter.CLASS: - // case ClassWriter.STR: - // case ClassWriter.MTYPE - default: - size = 3; - break; - } - index += size; - } - maxStringLength = max; - // the class header information starts just after the constant pool - header = index; - } - - /** - * Returns the class's access flags (see {@link Opcodes}). This value may - * not reflect Deprecated and Synthetic flags when bytecode is before 1.5 - * and those flags are represented by attributes. - * - * @return the class access flags - * @see ClassVisitor#visit(int, int, String, String, String, String[]) - */ - public int getAccess() { - return readUnsignedShort(header); - } - - /** - * Returns the internal name of the class (see - * {@link Type#getInternalName() getInternalName}). - * - * @return the internal class name - * @see ClassVisitor#visit(int, int, String, String, String, String[]) - */ - public String getClassName() { - return readClass(header + 2, new char[maxStringLength]); - } - - /** - * Returns the internal of name of the super class (see - * {@link Type#getInternalName() getInternalName}). For interfaces, the - * super class is {@link Object}. - * - * @return the internal name of super class, or null for - * {@link Object} class. - * @see ClassVisitor#visit(int, int, String, String, String, String[]) - */ - public String getSuperName() { - return readClass(header + 4, new char[maxStringLength]); - } - - /** - * Returns the internal names of the class's interfaces (see - * {@link Type#getInternalName() getInternalName}). - * - * @return the array of internal names for all implemented interfaces or - * null. - * @see ClassVisitor#visit(int, int, String, String, String, String[]) - */ - public String[] getInterfaces() { - int index = header + 6; - int n = readUnsignedShort(index); - String[] interfaces = new String[n]; - if (n > 0) { - char[] buf = new char[maxStringLength]; - for (int i = 0; i < n; ++i) { - index += 2; - interfaces[i] = readClass(index, buf); - } - } - return interfaces; - } - - /** - * Copies the constant pool data into the given {@link ClassWriter}. Should - * be called before the {@link #accept(ClassVisitor, int)} method. - * - * @param classWriter the {@link ClassWriter} to copy constant pool into. - */ - void copyPool(final ClassWriter classWriter) { - char[] buf = new char[maxStringLength]; - int ll = items.length; - Item[] items2 = new Item[ll]; - for (int i = 1; i < ll; i++) { - int index = items[i]; - int tag = b[index - 1]; - Item item = new Item(i); - int nameType; - switch (tag) { - case ClassWriter.FIELD: - case ClassWriter.METH: - case ClassWriter.IMETH: - nameType = items[readUnsignedShort(index + 2)]; - item.set(tag, readClass(index, buf), readUTF8(nameType, buf), - readUTF8(nameType + 2, buf)); - break; - case ClassWriter.INT: - item.set(readInt(index)); - break; - case ClassWriter.FLOAT: - item.set(Float.intBitsToFloat(readInt(index))); - break; - case ClassWriter.NAME_TYPE: - item.set(tag, readUTF8(index, buf), readUTF8(index + 2, buf), - null); - break; - case ClassWriter.LONG: - item.set(readLong(index)); - ++i; - break; - case ClassWriter.DOUBLE: - item.set(Double.longBitsToDouble(readLong(index))); - ++i; - break; - case ClassWriter.UTF8: { - String s = strings[i]; - if (s == null) { - index = items[i]; - s = strings[i] = readUTF(index + 2, - readUnsignedShort(index), buf); - } - item.set(tag, s, null, null); - break; - } - case ClassWriter.HANDLE: { - int fieldOrMethodRef = items[readUnsignedShort(index + 1)]; - nameType = items[readUnsignedShort(fieldOrMethodRef + 2)]; - item.set(ClassWriter.HANDLE_BASE + readByte(index), - readClass(fieldOrMethodRef, buf), - readUTF8(nameType, buf), readUTF8(nameType + 2, buf)); - break; - } - case ClassWriter.INDY: - if (classWriter.bootstrapMethods == null) { - copyBootstrapMethods(classWriter, items2, buf); - } - nameType = items[readUnsignedShort(index + 2)]; - item.set(readUTF8(nameType, buf), readUTF8(nameType + 2, buf), - readUnsignedShort(index)); - break; - // case ClassWriter.STR: - // case ClassWriter.CLASS: - // case ClassWriter.MTYPE - default: - item.set(tag, readUTF8(index, buf), null, null); - break; - } - - int index2 = item.hashCode % items2.length; - item.next = items2[index2]; - items2[index2] = item; - } - - int off = items[1] - 1; - classWriter.pool.putByteArray(b, off, header - off); - classWriter.items = items2; - classWriter.threshold = (int) (0.75d * ll); - classWriter.index = ll; - } - - /** - * Copies the bootstrap method data into the given {@link ClassWriter}. - * Should be called before the {@link #accept(ClassVisitor, int)} method. - * - * @param classWriter the {@link ClassWriter} to copy bootstrap methods into. - */ - private void copyBootstrapMethods(final ClassWriter classWriter, - final Item[] items, final char[] c) { - // finds the "BootstrapMethods" attribute - int u = getAttributes(); - boolean found = false; - for (int i = readUnsignedShort(u); i > 0; --i) { - String attrName = readUTF8(u + 2, c); - if ("BootstrapMethods".equals(attrName)) { - found = true; - break; - } - u += 6 + readInt(u + 4); - } - if (!found) { - return; - } - // copies the bootstrap methods in the class writer - int boostrapMethodCount = readUnsignedShort(u + 8); - for (int j = 0, v = u + 10; j < boostrapMethodCount; j++) { - int position = v - u - 10; - int hashCode = readConst(readUnsignedShort(v), c).hashCode(); - for (int k = readUnsignedShort(v + 2); k > 0; --k) { - hashCode ^= readConst(readUnsignedShort(v + 4), c).hashCode(); - v += 2; - } - v += 4; - Item item = new Item(j); - item.set(position, hashCode & 0x7FFFFFFF); - int index = item.hashCode % items.length; - item.next = items[index]; - items[index] = item; - } - int attrSize = readInt(u + 4); - ByteVector bootstrapMethods = new ByteVector(attrSize + 62); - bootstrapMethods.putByteArray(b, u + 10, attrSize - 2); - classWriter.bootstrapMethodsCount = boostrapMethodCount; - classWriter.bootstrapMethods = bootstrapMethods; - } - - /** - * Constructs a new {@link ClassReader} object. - * - * @param is an input stream from which to read the class. - * @throws IOException if a problem occurs during reading. - */ - public ClassReader(final InputStream is) throws IOException { - this(readClass(is, false)); - } - - /** - * Constructs a new {@link ClassReader} object. - * - * @param name the binary qualified name of the class to be read. - * @throws IOException if an exception occurs during reading. - */ - public ClassReader(final String name) throws IOException { - this(readClass( - ClassLoader.getSystemResourceAsStream(name.replace('.', '/') - + ".class"), true)); - } - - /** - * Reads the bytecode of a class. - * - * @param is an input stream from which to read the class. - * @param close true to close the input stream after reading. - * @return the bytecode read from the given input stream. - * @throws IOException if a problem occurs during reading. - */ - private static byte[] readClass(final InputStream is, boolean close) - throws IOException { - if (is == null) { - throw new IOException("Class not found"); - } - try { - byte[] b = new byte[is.available()]; - int len = 0; - while (true) { - int n = is.read(b, len, b.length - len); - if (n == -1) { - if (len < b.length) { - byte[] c = new byte[len]; - System.arraycopy(b, 0, c, 0, len); - b = c; - } - return b; - } - len += n; - if (len == b.length) { - int last = is.read(); - if (last < 0) { - return b; - } - byte[] c = new byte[b.length + 1000]; - System.arraycopy(b, 0, c, 0, len); - c[len++] = (byte) last; - b = c; - } - } - } finally { - if (close) { - is.close(); - } - } - } - - // ------------------------------------------------------------------------ - // Public methods - // ------------------------------------------------------------------------ - - /** - * Makes the given visitor visit the Java class of this {@link ClassReader} - * . This class is the one specified in the constructor (see - * {@link #ClassReader(byte[]) ClassReader}). - * - * @param classVisitor the visitor that must visit this class. - * @param flags option flags that can be used to modify the default behavior - * of this class. See {@link #SKIP_DEBUG}, {@link #EXPAND_FRAMES} - * , {@link #SKIP_FRAMES}, {@link #SKIP_CODE}. - */ - public void accept(final ClassVisitor classVisitor, final int flags) { - accept(classVisitor, new Attribute[0], flags); - } - - /** - * Makes the given visitor visit the Java class of this {@link ClassReader}. - * This class is the one specified in the constructor (see - * {@link #ClassReader(byte[]) ClassReader}). - * - * @param classVisitor the visitor that must visit this class. - * @param attrs prototypes of the attributes that must be parsed during the - * visit of the class. Any attribute whose type is not equal to - * the type of one the prototypes will not be parsed: its byte - * array value will be passed unchanged to the ClassWriter. - * This may corrupt it if this value contains references to - * the constant pool, or has syntactic or semantic links with a - * class element that has been transformed by a class adapter - * between the reader and the writer. - * @param flags option flags that can be used to modify the default behavior - * of this class. See {@link #SKIP_DEBUG}, {@link #EXPAND_FRAMES} - * , {@link #SKIP_FRAMES}, {@link #SKIP_CODE}. - */ - public void accept(final ClassVisitor classVisitor, - final Attribute[] attrs, final int flags) { - int u = header; // current offset in the class file - char[] c = new char[maxStringLength]; // buffer used to read strings - - Context context = new Context(); - context.attrs = attrs; - context.flags = flags; - context.buffer = c; - - // reads the class declaration - int access = readUnsignedShort(u); - String name = readClass(u + 2, c); - String superClass = readClass(u + 4, c); - String[] interfaces = new String[readUnsignedShort(u + 6)]; - u += 8; - for (int i = 0; i < interfaces.length; ++i) { - interfaces[i] = readClass(u, c); - u += 2; - } - - // reads the class attributes - String signature = null; - String sourceFile = null; - String sourceDebug = null; - String enclosingOwner = null; - String enclosingName = null; - String enclosingDesc = null; - int anns = 0; - int ianns = 0; - int tanns = 0; - int itanns = 0; - int innerClasses = 0; - Attribute attributes = null; - - u = getAttributes(); - for (int i = readUnsignedShort(u); i > 0; --i) { - String attrName = readUTF8(u + 2, c); - // tests are sorted in decreasing frequency order - // (based on frequencies observed on typical classes) - if ("SourceFile".equals(attrName)) { - sourceFile = readUTF8(u + 8, c); - } else if ("InnerClasses".equals(attrName)) { - innerClasses = u + 8; - } else if ("EnclosingMethod".equals(attrName)) { - enclosingOwner = readClass(u + 8, c); - int item = readUnsignedShort(u + 10); - if (item != 0) { - enclosingName = readUTF8(items[item], c); - enclosingDesc = readUTF8(items[item] + 2, c); - } - } else if (SIGNATURES && "Signature".equals(attrName)) { - signature = readUTF8(u + 8, c); - } else if (ANNOTATIONS - && "RuntimeVisibleAnnotations".equals(attrName)) { - anns = u + 8; - } else if (ANNOTATIONS - && "RuntimeVisibleTypeAnnotations".equals(attrName)) { - tanns = u + 8; - } else if ("Deprecated".equals(attrName)) { - access |= Opcodes.ACC_DEPRECATED; - } else if ("Synthetic".equals(attrName)) { - access |= Opcodes.ACC_SYNTHETIC - | ClassWriter.ACC_SYNTHETIC_ATTRIBUTE; - } else if ("SourceDebugExtension".equals(attrName)) { - int len = readInt(u + 4); - sourceDebug = readUTF(u + 8, len, new char[len]); - } else if (ANNOTATIONS - && "RuntimeInvisibleAnnotations".equals(attrName)) { - ianns = u + 8; - } else if (ANNOTATIONS - && "RuntimeInvisibleTypeAnnotations".equals(attrName)) { - itanns = u + 8; - } else if ("BootstrapMethods".equals(attrName)) { - int[] bootstrapMethods = new int[readUnsignedShort(u + 8)]; - for (int j = 0, v = u + 10; j < bootstrapMethods.length; j++) { - bootstrapMethods[j] = v; - v += 2 + readUnsignedShort(v + 2) << 1; - } - context.bootstrapMethods = bootstrapMethods; - } else { - Attribute attr = readAttribute(attrs, attrName, u + 8, - readInt(u + 4), c, -1, null); - if (attr != null) { - attr.next = attributes; - attributes = attr; - } - } - u += 6 + readInt(u + 4); - } - - // visits the class declaration - classVisitor.visit(readInt(items[1] - 7), access, name, signature, - superClass, interfaces); - - // visits the source and debug info - if ((flags & SKIP_DEBUG) == 0 - && (sourceFile != null || sourceDebug != null)) { - classVisitor.visitSource(sourceFile, sourceDebug); - } - - // visits the outer class - if (enclosingOwner != null) { - classVisitor.visitOuterClass(enclosingOwner, enclosingName, - enclosingDesc); - } - - // visits the class annotations and type annotations - if (ANNOTATIONS && anns != 0) { - for (int i = readUnsignedShort(anns), v = anns + 2; i > 0; --i) { - v = readAnnotationValues(v + 2, c, true, - classVisitor.visitAnnotation(readUTF8(v, c), true)); - } - } - if (ANNOTATIONS && ianns != 0) { - for (int i = readUnsignedShort(ianns), v = ianns + 2; i > 0; --i) { - v = readAnnotationValues(v + 2, c, true, - classVisitor.visitAnnotation(readUTF8(v, c), false)); - } - } - if (ANNOTATIONS && tanns != 0) { - for (int i = readUnsignedShort(tanns), v = tanns + 2; i > 0; --i) { - v = readAnnotationTarget(context, v); - v = readAnnotationValues(v + 2, c, true, - classVisitor.visitTypeAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), true)); - } - } - if (ANNOTATIONS && itanns != 0) { - for (int i = readUnsignedShort(itanns), v = itanns + 2; i > 0; --i) { - v = readAnnotationTarget(context, v); - v = readAnnotationValues(v + 2, c, true, - classVisitor.visitTypeAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), false)); - } - } - - // visits the attributes - while (attributes != null) { - Attribute attr = attributes.next; - attributes.next = null; - classVisitor.visitAttribute(attributes); - attributes = attr; - } - - // visits the inner classes - if (innerClasses != 0) { - int v = innerClasses + 2; - for (int i = readUnsignedShort(innerClasses); i > 0; --i) { - classVisitor.visitInnerClass(readClass(v, c), - readClass(v + 2, c), readUTF8(v + 4, c), - readUnsignedShort(v + 6)); - v += 8; - } - } - - // visits the fields and methods - u = header + 10 + 2 * interfaces.length; - for (int i = readUnsignedShort(u - 2); i > 0; --i) { - u = readField(classVisitor, context, u); - } - u += 2; - for (int i = readUnsignedShort(u - 2); i > 0; --i) { - u = readMethod(classVisitor, context, u); - } - - // visits the end of the class - classVisitor.visitEnd(); - } - - /** - * Reads a field and makes the given visitor visit it. - * - * @param classVisitor the visitor that must visit the field. - * @param context information about the class being parsed. - * @param u the start offset of the field in the class file. - * @return the offset of the first byte following the field in the class. - */ - private int readField(final ClassVisitor classVisitor, - final Context context, int u) { - // reads the field declaration - char[] c = context.buffer; - int access = readUnsignedShort(u); - String name = readUTF8(u + 2, c); - String desc = readUTF8(u + 4, c); - u += 6; - - // reads the field attributes - String signature = null; - int anns = 0; - int ianns = 0; - int tanns = 0; - int itanns = 0; - Object value = null; - Attribute attributes = null; - - for (int i = readUnsignedShort(u); i > 0; --i) { - String attrName = readUTF8(u + 2, c); - // tests are sorted in decreasing frequency order - // (based on frequencies observed on typical classes) - if ("ConstantValue".equals(attrName)) { - int item = readUnsignedShort(u + 8); - value = item == 0 ? null : readConst(item, c); - } else if (SIGNATURES && "Signature".equals(attrName)) { - signature = readUTF8(u + 8, c); - } else if ("Deprecated".equals(attrName)) { - access |= Opcodes.ACC_DEPRECATED; - } else if ("Synthetic".equals(attrName)) { - access |= Opcodes.ACC_SYNTHETIC - | ClassWriter.ACC_SYNTHETIC_ATTRIBUTE; - } else if (ANNOTATIONS - && "RuntimeVisibleAnnotations".equals(attrName)) { - anns = u + 8; - } else if (ANNOTATIONS - && "RuntimeVisibleTypeAnnotations".equals(attrName)) { - tanns = u + 8; - } else if (ANNOTATIONS - && "RuntimeInvisibleAnnotations".equals(attrName)) { - ianns = u + 8; - } else if (ANNOTATIONS - && "RuntimeInvisibleTypeAnnotations".equals(attrName)) { - itanns = u + 8; - } else { - Attribute attr = readAttribute(context.attrs, attrName, u + 8, - readInt(u + 4), c, -1, null); - if (attr != null) { - attr.next = attributes; - attributes = attr; - } - } - u += 6 + readInt(u + 4); - } - u += 2; - - // visits the field declaration - FieldVisitor fv = classVisitor.visitField(access, name, desc, - signature, value); - if (fv == null) { - return u; - } - - // visits the field annotations and type annotations - if (ANNOTATIONS && anns != 0) { - for (int i = readUnsignedShort(anns), v = anns + 2; i > 0; --i) { - v = readAnnotationValues(v + 2, c, true, - fv.visitAnnotation(readUTF8(v, c), true)); - } - } - if (ANNOTATIONS && ianns != 0) { - for (int i = readUnsignedShort(ianns), v = ianns + 2; i > 0; --i) { - v = readAnnotationValues(v + 2, c, true, - fv.visitAnnotation(readUTF8(v, c), false)); - } - } - if (ANNOTATIONS && tanns != 0) { - for (int i = readUnsignedShort(tanns), v = tanns + 2; i > 0; --i) { - v = readAnnotationTarget(context, v); - v = readAnnotationValues(v + 2, c, true, - fv.visitTypeAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), true)); - } - } - if (ANNOTATIONS && itanns != 0) { - for (int i = readUnsignedShort(itanns), v = itanns + 2; i > 0; --i) { - v = readAnnotationTarget(context, v); - v = readAnnotationValues(v + 2, c, true, - fv.visitTypeAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), false)); - } - } - - // visits the field attributes - while (attributes != null) { - Attribute attr = attributes.next; - attributes.next = null; - fv.visitAttribute(attributes); - attributes = attr; - } - - // visits the end of the field - fv.visitEnd(); - - return u; - } - - /** - * Reads a method and makes the given visitor visit it. - * - * @param classVisitor the visitor that must visit the method. - * @param context information about the class being parsed. - * @param u the start offset of the method in the class file. - * @return the offset of the first byte following the method in the class. - */ - private int readMethod(final ClassVisitor classVisitor, - final Context context, int u) { - // reads the method declaration - char[] c = context.buffer; - context.access = readUnsignedShort(u); - context.name = readUTF8(u + 2, c); - context.desc = readUTF8(u + 4, c); - u += 6; - - // reads the method attributes - int code = 0; - int exception = 0; - String[] exceptions = null; - String signature = null; - int methodParameters = 0; - int anns = 0; - int ianns = 0; - int tanns = 0; - int itanns = 0; - int dann = 0; - int mpanns = 0; - int impanns = 0; - int firstAttribute = u; - Attribute attributes = null; - - for (int i = readUnsignedShort(u); i > 0; --i) { - String attrName = readUTF8(u + 2, c); - // tests are sorted in decreasing frequency order - // (based on frequencies observed on typical classes) - if ("Code".equals(attrName)) { - if ((context.flags & SKIP_CODE) == 0) { - code = u + 8; - } - } else if ("Exceptions".equals(attrName)) { - exceptions = new String[readUnsignedShort(u + 8)]; - exception = u + 10; - for (int j = 0; j < exceptions.length; ++j) { - exceptions[j] = readClass(exception, c); - exception += 2; - } - } else if (SIGNATURES && "Signature".equals(attrName)) { - signature = readUTF8(u + 8, c); - } else if ("Deprecated".equals(attrName)) { - context.access |= Opcodes.ACC_DEPRECATED; - } else if (ANNOTATIONS - && "RuntimeVisibleAnnotations".equals(attrName)) { - anns = u + 8; - } else if (ANNOTATIONS - && "RuntimeVisibleTypeAnnotations".equals(attrName)) { - tanns = u + 8; - } else if (ANNOTATIONS && "AnnotationDefault".equals(attrName)) { - dann = u + 8; - } else if ("Synthetic".equals(attrName)) { - context.access |= Opcodes.ACC_SYNTHETIC - | ClassWriter.ACC_SYNTHETIC_ATTRIBUTE; - } else if (ANNOTATIONS - && "RuntimeInvisibleAnnotations".equals(attrName)) { - ianns = u + 8; - } else if (ANNOTATIONS - && "RuntimeInvisibleTypeAnnotations".equals(attrName)) { - itanns = u + 8; - } else if (ANNOTATIONS - && "RuntimeVisibleParameterAnnotations".equals(attrName)) { - mpanns = u + 8; - } else if (ANNOTATIONS - && "RuntimeInvisibleParameterAnnotations".equals(attrName)) { - impanns = u + 8; - } else if ("MethodParameters".equals(attrName)) { - methodParameters = u + 8; - } else { - Attribute attr = readAttribute(context.attrs, attrName, u + 8, - readInt(u + 4), c, -1, null); - if (attr != null) { - attr.next = attributes; - attributes = attr; - } - } - u += 6 + readInt(u + 4); - } - u += 2; - - // visits the method declaration - MethodVisitor mv = classVisitor.visitMethod(context.access, - context.name, context.desc, signature, exceptions); - if (mv == null) { - return u; - } - - /* - * if the returned MethodVisitor is in fact a MethodWriter, it means - * there is no method adapter between the reader and the writer. If, in - * addition, the writer's constant pool was copied from this reader - * (mw.cw.cr == this), and the signature and exceptions of the method - * have not been changed, then it is possible to skip all visit events - * and just copy the original code of the method to the writer (the - * access, name and descriptor can have been changed, this is not - * important since they are not copied as is from the reader). - */ - if (WRITER && mv instanceof MethodWriter) { - MethodWriter mw = (MethodWriter) mv; - if (mw.cw.cr == this && signature == mw.signature) { - boolean sameExceptions = false; - if (exceptions == null) { - sameExceptions = mw.exceptionCount == 0; - } else if (exceptions.length == mw.exceptionCount) { - sameExceptions = true; - for (int j = exceptions.length - 1; j >= 0; --j) { - exception -= 2; - if (mw.exceptions[j] != readUnsignedShort(exception)) { - sameExceptions = false; - break; - } - } - } - if (sameExceptions) { - /* - * we do not copy directly the code into MethodWriter to - * save a byte array copy operation. The real copy will be - * done in ClassWriter.toByteArray(). - */ - mw.classReaderOffset = firstAttribute; - mw.classReaderLength = u - firstAttribute; - return u; - } - } - } - - // visit the method parameters - if (methodParameters != 0) { - for (int i = b[methodParameters] & 0xFF, v = methodParameters + 1; i > 0; --i, v = v + 4) { - mv.visitParameter(readUTF8(v, c), readUnsignedShort(v + 2)); - } - } - - // visits the method annotations - if (ANNOTATIONS && dann != 0) { - AnnotationVisitor dv = mv.visitAnnotationDefault(); - readAnnotationValue(dann, c, null, dv); - if (dv != null) { - dv.visitEnd(); - } - } - if (ANNOTATIONS && anns != 0) { - for (int i = readUnsignedShort(anns), v = anns + 2; i > 0; --i) { - v = readAnnotationValues(v + 2, c, true, - mv.visitAnnotation(readUTF8(v, c), true)); - } - } - if (ANNOTATIONS && ianns != 0) { - for (int i = readUnsignedShort(ianns), v = ianns + 2; i > 0; --i) { - v = readAnnotationValues(v + 2, c, true, - mv.visitAnnotation(readUTF8(v, c), false)); - } - } - if (ANNOTATIONS && tanns != 0) { - for (int i = readUnsignedShort(tanns), v = tanns + 2; i > 0; --i) { - v = readAnnotationTarget(context, v); - v = readAnnotationValues(v + 2, c, true, - mv.visitTypeAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), true)); - } - } - if (ANNOTATIONS && itanns != 0) { - for (int i = readUnsignedShort(itanns), v = itanns + 2; i > 0; --i) { - v = readAnnotationTarget(context, v); - v = readAnnotationValues(v + 2, c, true, - mv.visitTypeAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), false)); - } - } - if (ANNOTATIONS && mpanns != 0) { - readParameterAnnotations(mv, context, mpanns, true); - } - if (ANNOTATIONS && impanns != 0) { - readParameterAnnotations(mv, context, impanns, false); - } - - // visits the method attributes - while (attributes != null) { - Attribute attr = attributes.next; - attributes.next = null; - mv.visitAttribute(attributes); - attributes = attr; - } - - // visits the method code - if (code != 0) { - mv.visitCode(); - readCode(mv, context, code); - } - - // visits the end of the method - mv.visitEnd(); - - return u; - } - - /** - * Reads the bytecode of a method and makes the given visitor visit it. - * - * @param mv the visitor that must visit the method's code. - * @param context information about the class being parsed. - * @param u the start offset of the code attribute in the class file. - */ - private void readCode(final MethodVisitor mv, final Context context, int u) { - // reads the header - byte[] b = this.b; - char[] c = context.buffer; - int maxStack = readUnsignedShort(u); - int maxLocals = readUnsignedShort(u + 2); - int codeLength = readInt(u + 4); - u += 8; - - // reads the bytecode to find the labels - int codeStart = u; - int codeEnd = u + codeLength; - Label[] labels = context.labels = new Label[codeLength + 2]; - readLabel(codeLength + 1, labels); - while (u < codeEnd) { - int offset = u - codeStart; - int opcode = b[u] & 0xFF; - switch (ClassWriter.TYPE[opcode]) { - case ClassWriter.NOARG_INSN: - case ClassWriter.IMPLVAR_INSN: - u += 1; - break; - case ClassWriter.LABEL_INSN: - readLabel(offset + readShort(u + 1), labels); - u += 3; - break; - case ClassWriter.LABELW_INSN: - readLabel(offset + readInt(u + 1), labels); - u += 5; - break; - case ClassWriter.WIDE_INSN: - opcode = b[u + 1] & 0xFF; - if (opcode == Opcodes.IINC) { - u += 6; - } else { - u += 4; - } - break; - case ClassWriter.TABL_INSN: - // skips 0 to 3 padding bytes - u = u + 4 - (offset & 3); - // reads instruction - readLabel(offset + readInt(u), labels); - for (int i = readInt(u + 8) - readInt(u + 4) + 1; i > 0; --i) { - readLabel(offset + readInt(u + 12), labels); - u += 4; - } - u += 12; - break; - case ClassWriter.LOOK_INSN: - // skips 0 to 3 padding bytes - u = u + 4 - (offset & 3); - // reads instruction - readLabel(offset + readInt(u), labels); - for (int i = readInt(u + 4); i > 0; --i) { - readLabel(offset + readInt(u + 12), labels); - u += 8; - } - u += 8; - break; - case ClassWriter.VAR_INSN: - case ClassWriter.SBYTE_INSN: - case ClassWriter.LDC_INSN: - u += 2; - break; - case ClassWriter.SHORT_INSN: - case ClassWriter.LDCW_INSN: - case ClassWriter.FIELDORMETH_INSN: - case ClassWriter.TYPE_INSN: - case ClassWriter.IINC_INSN: - u += 3; - break; - case ClassWriter.ITFMETH_INSN: - case ClassWriter.INDYMETH_INSN: - u += 5; - break; - // case MANA_INSN: - default: - u += 4; - break; - } - } - - // reads the try catch entries to find the labels, and also visits them - for (int i = readUnsignedShort(u); i > 0; --i) { - Label start = readLabel(readUnsignedShort(u + 2), labels); - Label end = readLabel(readUnsignedShort(u + 4), labels); - Label handler = readLabel(readUnsignedShort(u + 6), labels); - String type = readUTF8(items[readUnsignedShort(u + 8)], c); - mv.visitTryCatchBlock(start, end, handler, type); - u += 8; - } - u += 2; - - // reads the code attributes - int[] tanns = null; // start index of each visible type annotation - int[] itanns = null; // start index of each invisible type annotation - int tann = 0; // current index in tanns array - int itann = 0; // current index in itanns array - int ntoff = -1; // next visible type annotation code offset - int nitoff = -1; // next invisible type annotation code offset - int varTable = 0; - int varTypeTable = 0; - boolean zip = true; - boolean unzip = (context.flags & EXPAND_FRAMES) != 0; - int stackMap = 0; - int stackMapSize = 0; - int frameCount = 0; - Context frame = null; - Attribute attributes = null; - - for (int i = readUnsignedShort(u); i > 0; --i) { - String attrName = readUTF8(u + 2, c); - if ("LocalVariableTable".equals(attrName)) { - if ((context.flags & SKIP_DEBUG) == 0) { - varTable = u + 8; - for (int j = readUnsignedShort(u + 8), v = u; j > 0; --j) { - int label = readUnsignedShort(v + 10); - if (labels[label] == null) { - readLabel(label, labels).status |= Label.DEBUG; - } - label += readUnsignedShort(v + 12); - if (labels[label] == null) { - readLabel(label, labels).status |= Label.DEBUG; - } - v += 10; - } - } - } else if ("LocalVariableTypeTable".equals(attrName)) { - varTypeTable = u + 8; - } else if ("LineNumberTable".equals(attrName)) { - if ((context.flags & SKIP_DEBUG) == 0) { - for (int j = readUnsignedShort(u + 8), v = u; j > 0; --j) { - int label = readUnsignedShort(v + 10); - if (labels[label] == null) { - readLabel(label, labels).status |= Label.DEBUG; - } - Label l = labels[label]; - while (l.line > 0) { - if (l.next == null) { - l.next = new Label(); - } - l = l.next; - } - l.line = readUnsignedShort(v + 12); - v += 4; - } - } - } else if (ANNOTATIONS - && "RuntimeVisibleTypeAnnotations".equals(attrName)) { - tanns = readTypeAnnotations(mv, context, u + 8, true); - ntoff = tanns.length == 0 || readByte(tanns[0]) < 0x43 ? -1 - : readUnsignedShort(tanns[0] + 1); - } else if (ANNOTATIONS - && "RuntimeInvisibleTypeAnnotations".equals(attrName)) { - itanns = readTypeAnnotations(mv, context, u + 8, false); - nitoff = itanns.length == 0 || readByte(itanns[0]) < 0x43 ? -1 - : readUnsignedShort(itanns[0] + 1); - } else if (FRAMES && "StackMapTable".equals(attrName)) { - if ((context.flags & SKIP_FRAMES) == 0) { - stackMap = u + 10; - stackMapSize = readInt(u + 4); - frameCount = readUnsignedShort(u + 8); - } - /* - * here we do not extract the labels corresponding to the - * attribute content. This would require a full parsing of the - * attribute, which would need to be repeated in the second - * phase (see below). Instead the content of the attribute is - * read one frame at a time (i.e. after a frame has been - * visited, the next frame is read), and the labels it contains - * are also extracted one frame at a time. Thanks to the - * ordering of frames, having only a "one frame lookahead" is - * not a problem, i.e. it is not possible to see an offset - * smaller than the offset of the current insn and for which no - * Label exist. - */ - /* - * This is not true for UNINITIALIZED type offsets. We solve - * this by parsing the stack map table without a full decoding - * (see below). - */ - } else if (FRAMES && "StackMap".equals(attrName)) { - if ((context.flags & SKIP_FRAMES) == 0) { - zip = false; - stackMap = u + 10; - stackMapSize = readInt(u + 4); - frameCount = readUnsignedShort(u + 8); - } - /* - * IMPORTANT! here we assume that the frames are ordered, as in - * the StackMapTable attribute, although this is not guaranteed - * by the attribute format. - */ - } else { - for (int j = 0; j < context.attrs.length; ++j) { - if (context.attrs[j].type.equals(attrName)) { - Attribute attr = context.attrs[j].read(this, u + 8, - readInt(u + 4), c, codeStart - 8, labels); - if (attr != null) { - attr.next = attributes; - attributes = attr; - } - } - } - } - u += 6 + readInt(u + 4); - } - u += 2; - - // generates the first (implicit) stack map frame - if (FRAMES && stackMap != 0) { - /* - * for the first explicit frame the offset is not offset_delta + 1 - * but only offset_delta; setting the implicit frame offset to -1 - * allow the use of the "offset_delta + 1" rule in all cases - */ - frame = context; - frame.offset = -1; - frame.mode = 0; - frame.localCount = 0; - frame.localDiff = 0; - frame.stackCount = 0; - frame.local = new Object[maxLocals]; - frame.stack = new Object[maxStack]; - if (unzip) { - getImplicitFrame(context); - } - /* - * Finds labels for UNINITIALIZED frame types. Instead of decoding - * each element of the stack map table, we look for 3 consecutive - * bytes that "look like" an UNINITIALIZED type (tag 8, offset - * within code bounds, NEW instruction at this offset). We may find - * false positives (i.e. not real UNINITIALIZED types), but this - * should be rare, and the only consequence will be the creation of - * an unneeded label. This is better than creating a label for each - * NEW instruction, and faster than fully decoding the whole stack - * map table. - */ - for (int i = stackMap; i < stackMap + stackMapSize - 2; ++i) { - if (b[i] == 8) { // UNINITIALIZED FRAME TYPE - int v = readUnsignedShort(i + 1); - if (v >= 0 && v < codeLength) { - if ((b[codeStart + v] & 0xFF) == Opcodes.NEW) { - readLabel(v, labels); - } - } - } - } - } - - // visits the instructions - u = codeStart; - while (u < codeEnd) { - int offset = u - codeStart; - - // visits the label and line number for this offset, if any - Label l = labels[offset]; - if (l != null) { - Label next = l.next; - l.next = null; - mv.visitLabel(l); - if ((context.flags & SKIP_DEBUG) == 0 && l.line > 0) { - mv.visitLineNumber(l.line, l); - while (next != null) { - mv.visitLineNumber(next.line, l); - next = next.next; - } - } - } - - // visits the frame for this offset, if any - while (FRAMES && frame != null - && (frame.offset == offset || frame.offset == -1)) { - // if there is a frame for this offset, makes the visitor visit - // it, and reads the next frame if there is one. - if (frame.offset != -1) { - if (!zip || unzip) { - mv.visitFrame(Opcodes.F_NEW, frame.localCount, - frame.local, frame.stackCount, frame.stack); - } else { - mv.visitFrame(frame.mode, frame.localDiff, frame.local, - frame.stackCount, frame.stack); - } - } - if (frameCount > 0) { - stackMap = readFrame(stackMap, zip, unzip, frame); - --frameCount; - } else { - frame = null; - } - } - - // visits the instruction at this offset - int opcode = b[u] & 0xFF; - switch (ClassWriter.TYPE[opcode]) { - case ClassWriter.NOARG_INSN: - mv.visitInsn(opcode); - u += 1; - break; - case ClassWriter.IMPLVAR_INSN: - if (opcode > Opcodes.ISTORE) { - opcode -= 59; // ISTORE_0 - mv.visitVarInsn(Opcodes.ISTORE + (opcode >> 2), - opcode & 0x3); - } else { - opcode -= 26; // ILOAD_0 - mv.visitVarInsn(Opcodes.ILOAD + (opcode >> 2), opcode & 0x3); - } - u += 1; - break; - case ClassWriter.LABEL_INSN: - mv.visitJumpInsn(opcode, labels[offset + readShort(u + 1)]); - u += 3; - break; - case ClassWriter.LABELW_INSN: - mv.visitJumpInsn(opcode - 33, labels[offset + readInt(u + 1)]); - u += 5; - break; - case ClassWriter.WIDE_INSN: - opcode = b[u + 1] & 0xFF; - if (opcode == Opcodes.IINC) { - mv.visitIincInsn(readUnsignedShort(u + 2), readShort(u + 4)); - u += 6; - } else { - mv.visitVarInsn(opcode, readUnsignedShort(u + 2)); - u += 4; - } - break; - case ClassWriter.TABL_INSN: { - // skips 0 to 3 padding bytes - u = u + 4 - (offset & 3); - // reads instruction - int label = offset + readInt(u); - int min = readInt(u + 4); - int max = readInt(u + 8); - Label[] table = new Label[max - min + 1]; - u += 12; - for (int i = 0; i < table.length; ++i) { - table[i] = labels[offset + readInt(u)]; - u += 4; - } - mv.visitTableSwitchInsn(min, max, labels[label], table); - break; - } - case ClassWriter.LOOK_INSN: { - // skips 0 to 3 padding bytes - u = u + 4 - (offset & 3); - // reads instruction - int label = offset + readInt(u); - int len = readInt(u + 4); - int[] keys = new int[len]; - Label[] values = new Label[len]; - u += 8; - for (int i = 0; i < len; ++i) { - keys[i] = readInt(u); - values[i] = labels[offset + readInt(u + 4)]; - u += 8; - } - mv.visitLookupSwitchInsn(labels[label], keys, values); - break; - } - case ClassWriter.VAR_INSN: - mv.visitVarInsn(opcode, b[u + 1] & 0xFF); - u += 2; - break; - case ClassWriter.SBYTE_INSN: - mv.visitIntInsn(opcode, b[u + 1]); - u += 2; - break; - case ClassWriter.SHORT_INSN: - mv.visitIntInsn(opcode, readShort(u + 1)); - u += 3; - break; - case ClassWriter.LDC_INSN: - mv.visitLdcInsn(readConst(b[u + 1] & 0xFF, c)); - u += 2; - break; - case ClassWriter.LDCW_INSN: - mv.visitLdcInsn(readConst(readUnsignedShort(u + 1), c)); - u += 3; - break; - case ClassWriter.FIELDORMETH_INSN: - case ClassWriter.ITFMETH_INSN: { - int cpIndex = items[readUnsignedShort(u + 1)]; - boolean itf = b[cpIndex - 1] == ClassWriter.IMETH; - String iowner = readClass(cpIndex, c); - cpIndex = items[readUnsignedShort(cpIndex + 2)]; - String iname = readUTF8(cpIndex, c); - String idesc = readUTF8(cpIndex + 2, c); - if (opcode < Opcodes.INVOKEVIRTUAL) { - mv.visitFieldInsn(opcode, iowner, iname, idesc); - } else { - mv.visitMethodInsn(opcode, iowner, iname, idesc, itf); - } - if (opcode == Opcodes.INVOKEINTERFACE) { - u += 5; - } else { - u += 3; - } - break; - } - case ClassWriter.INDYMETH_INSN: { - int cpIndex = items[readUnsignedShort(u + 1)]; - int bsmIndex = context.bootstrapMethods[readUnsignedShort(cpIndex)]; - Handle bsm = (Handle) readConst(readUnsignedShort(bsmIndex), c); - int bsmArgCount = readUnsignedShort(bsmIndex + 2); - Object[] bsmArgs = new Object[bsmArgCount]; - bsmIndex += 4; - for (int i = 0; i < bsmArgCount; i++) { - bsmArgs[i] = readConst(readUnsignedShort(bsmIndex), c); - bsmIndex += 2; - } - cpIndex = items[readUnsignedShort(cpIndex + 2)]; - String iname = readUTF8(cpIndex, c); - String idesc = readUTF8(cpIndex + 2, c); - mv.visitInvokeDynamicInsn(iname, idesc, bsm, bsmArgs); - u += 5; - break; - } - case ClassWriter.TYPE_INSN: - mv.visitTypeInsn(opcode, readClass(u + 1, c)); - u += 3; - break; - case ClassWriter.IINC_INSN: - mv.visitIincInsn(b[u + 1] & 0xFF, b[u + 2]); - u += 3; - break; - // case MANA_INSN: - default: - mv.visitMultiANewArrayInsn(readClass(u + 1, c), b[u + 3] & 0xFF); - u += 4; - break; - } - - // visit the instruction annotations, if any - while (tanns != null && tann < tanns.length && ntoff <= offset) { - if (ntoff == offset) { - int v = readAnnotationTarget(context, tanns[tann]); - readAnnotationValues(v + 2, c, true, - mv.visitInsnAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), true)); - } - ntoff = ++tann >= tanns.length || readByte(tanns[tann]) < 0x43 ? -1 - : readUnsignedShort(tanns[tann] + 1); - } - while (itanns != null && itann < itanns.length && nitoff <= offset) { - if (nitoff == offset) { - int v = readAnnotationTarget(context, itanns[itann]); - readAnnotationValues(v + 2, c, true, - mv.visitInsnAnnotation(context.typeRef, - context.typePath, readUTF8(v, c), false)); - } - nitoff = ++itann >= itanns.length - || readByte(itanns[itann]) < 0x43 ? -1 - : readUnsignedShort(itanns[itann] + 1); - } - } - if (labels[codeLength] != null) { - mv.visitLabel(labels[codeLength]); - } - - // visits the local variable tables - if ((context.flags & SKIP_DEBUG) == 0 && varTable != 0) { - int[] typeTable = null; - if (varTypeTable != 0) { - u = varTypeTable + 2; - typeTable = new int[readUnsignedShort(varTypeTable) * 3]; - for (int i = typeTable.length; i > 0; ) { - typeTable[--i] = u + 6; // signature - typeTable[--i] = readUnsignedShort(u + 8); // index - typeTable[--i] = readUnsignedShort(u); // start - u += 10; - } - } - u = varTable + 2; - for (int i = readUnsignedShort(varTable); i > 0; --i) { - int start = readUnsignedShort(u); - int length = readUnsignedShort(u + 2); - int index = readUnsignedShort(u + 8); - String vsignature = null; - if (typeTable != null) { - for (int j = 0; j < typeTable.length; j += 3) { - if (typeTable[j] == start && typeTable[j + 1] == index) { - vsignature = readUTF8(typeTable[j + 2], c); - break; - } - } - } - mv.visitLocalVariable(readUTF8(u + 4, c), readUTF8(u + 6, c), - vsignature, labels[start], labels[start + length], - index); - u += 10; - } - } - - // visits the local variables type annotations - if (tanns != null) { - for (int i = 0; i < tanns.length; ++i) { - if ((readByte(tanns[i]) >> 1) == (0x40 >> 1)) { - int v = readAnnotationTarget(context, tanns[i]); - v = readAnnotationValues(v + 2, c, true, - mv.visitLocalVariableAnnotation(context.typeRef, - context.typePath, context.start, - context.end, context.index, readUTF8(v, c), - true)); - } - } - } - if (itanns != null) { - for (int i = 0; i < itanns.length; ++i) { - if ((readByte(itanns[i]) >> 1) == (0x40 >> 1)) { - int v = readAnnotationTarget(context, itanns[i]); - v = readAnnotationValues(v + 2, c, true, - mv.visitLocalVariableAnnotation(context.typeRef, - context.typePath, context.start, - context.end, context.index, readUTF8(v, c), - false)); - } - } - } - - // visits the code attributes - while (attributes != null) { - Attribute attr = attributes.next; - attributes.next = null; - mv.visitAttribute(attributes); - attributes = attr; - } - - // visits the max stack and max locals values - mv.visitMaxs(maxStack, maxLocals); - } - - /** - * Parses a type annotation table to find the labels, and to visit the try - * catch block annotations. - * - * @param u the start offset of a type annotation table. - * @param mv the method visitor to be used to visit the try catch block - * annotations. - * @param context information about the class being parsed. - * @param visible if the type annotation table to parse contains runtime visible - * annotations. - * @return the start offset of each type annotation in the parsed table. - */ - private int[] readTypeAnnotations(final MethodVisitor mv, - final Context context, int u, boolean visible) { - char[] c = context.buffer; - int[] offsets = new int[readUnsignedShort(u)]; - u += 2; - for (int i = 0; i < offsets.length; ++i) { - offsets[i] = u; - int target = readInt(u); - switch (target >>> 24) { - case 0x00: // CLASS_TYPE_PARAMETER - case 0x01: // METHOD_TYPE_PARAMETER - case 0x16: // METHOD_FORMAL_PARAMETER - u += 2; - break; - case 0x13: // FIELD - case 0x14: // METHOD_RETURN - case 0x15: // METHOD_RECEIVER - u += 1; - break; - case 0x40: // LOCAL_VARIABLE - case 0x41: // RESOURCE_VARIABLE - for (int j = readUnsignedShort(u + 1); j > 0; --j) { - int start = readUnsignedShort(u + 3); - int length = readUnsignedShort(u + 5); - readLabel(start, context.labels); - readLabel(start + length, context.labels); - u += 6; - } - u += 3; - break; - case 0x47: // CAST - case 0x48: // CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT - case 0x49: // METHOD_INVOCATION_TYPE_ARGUMENT - case 0x4A: // CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT - case 0x4B: // METHOD_REFERENCE_TYPE_ARGUMENT - u += 4; - break; - // case 0x10: // CLASS_EXTENDS - // case 0x11: // CLASS_TYPE_PARAMETER_BOUND - // case 0x12: // METHOD_TYPE_PARAMETER_BOUND - // case 0x17: // THROWS - // case 0x42: // EXCEPTION_PARAMETER - // case 0x43: // INSTANCEOF - // case 0x44: // NEW - // case 0x45: // CONSTRUCTOR_REFERENCE - // case 0x46: // METHOD_REFERENCE - default: - u += 3; - break; - } - int pathLength = readByte(u); - if ((target >>> 24) == 0x42) { - TypePath path = pathLength == 0 ? null : new TypePath(b, u); - u += 1 + 2 * pathLength; - u = readAnnotationValues(u + 2, c, true, - mv.visitTryCatchAnnotation(target, path, - readUTF8(u, c), visible)); - } else { - u = readAnnotationValues(u + 3 + 2 * pathLength, c, true, null); - } - } - return offsets; - } - - /** - * Parses the header of a type annotation to extract its target_type and - * target_path (the result is stored in the given context), and returns the - * start offset of the rest of the type_annotation structure (i.e. the - * offset to the type_index field, which is followed by - * num_element_value_pairs and then the name,value pairs). - * - * @param context information about the class being parsed. This is where the - * extracted target_type and target_path must be stored. - * @param u the start offset of a type_annotation structure. - * @return the start offset of the rest of the type_annotation structure. - */ - private int readAnnotationTarget(final Context context, int u) { - int target = readInt(u); - switch (target >>> 24) { - case 0x00: // CLASS_TYPE_PARAMETER - case 0x01: // METHOD_TYPE_PARAMETER - case 0x16: // METHOD_FORMAL_PARAMETER - target &= 0xFFFF0000; - u += 2; - break; - case 0x13: // FIELD - case 0x14: // METHOD_RETURN - case 0x15: // METHOD_RECEIVER - target &= 0xFF000000; - u += 1; - break; - case 0x40: // LOCAL_VARIABLE - case 0x41: { // RESOURCE_VARIABLE - target &= 0xFF000000; - int n = readUnsignedShort(u + 1); - context.start = new Label[n]; - context.end = new Label[n]; - context.index = new int[n]; - u += 3; - for (int i = 0; i < n; ++i) { - int start = readUnsignedShort(u); - int length = readUnsignedShort(u + 2); - context.start[i] = readLabel(start, context.labels); - context.end[i] = readLabel(start + length, context.labels); - context.index[i] = readUnsignedShort(u + 4); - u += 6; - } - break; - } - case 0x47: // CAST - case 0x48: // CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT - case 0x49: // METHOD_INVOCATION_TYPE_ARGUMENT - case 0x4A: // CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT - case 0x4B: // METHOD_REFERENCE_TYPE_ARGUMENT - target &= 0xFF0000FF; - u += 4; - break; - // case 0x10: // CLASS_EXTENDS - // case 0x11: // CLASS_TYPE_PARAMETER_BOUND - // case 0x12: // METHOD_TYPE_PARAMETER_BOUND - // case 0x17: // THROWS - // case 0x42: // EXCEPTION_PARAMETER - // case 0x43: // INSTANCEOF - // case 0x44: // NEW - // case 0x45: // CONSTRUCTOR_REFERENCE - // case 0x46: // METHOD_REFERENCE - default: - target &= (target >>> 24) < 0x43 ? 0xFFFFFF00 : 0xFF000000; - u += 3; - break; - } - int pathLength = readByte(u); - context.typeRef = target; - context.typePath = pathLength == 0 ? null : new TypePath(b, u); - return u + 1 + 2 * pathLength; - } - - /** - * Reads parameter annotations and makes the given visitor visit them. - * - * @param mv the visitor that must visit the annotations. - * @param context information about the class being parsed. - * @param v start offset in {@link #b b} of the annotations to be read. - * @param visible true if the annotations to be read are visible at - * runtime. - */ - private void readParameterAnnotations(final MethodVisitor mv, - final Context context, int v, final boolean visible) { - int i; - int n = b[v++] & 0xFF; - // workaround for a bug in javac (javac compiler generates a parameter - // annotation array whose size is equal to the number of parameters in - // the Java source file, while it should generate an array whose size is - // equal to the number of parameters in the method descriptor - which - // includes the synthetic parameters added by the compiler). This work- - // around supposes that the synthetic parameters are the first ones. - int synthetics = Type.getArgumentTypes(context.desc).length - n; - AnnotationVisitor av; - for (i = 0; i < synthetics; ++i) { - // virtual annotation to detect synthetic parameters in MethodWriter - av = mv.visitParameterAnnotation(i, "Ljava/lang/Synthetic;", false); - if (av != null) { - av.visitEnd(); - } - } - char[] c = context.buffer; - for (; i < n + synthetics; ++i) { - int j = readUnsignedShort(v); - v += 2; - for (; j > 0; --j) { - av = mv.visitParameterAnnotation(i, readUTF8(v, c), visible); - v = readAnnotationValues(v + 2, c, true, av); - } - } - } - - /** - * Reads the values of an annotation and makes the given visitor visit them. - * - * @param v the start offset in {@link #b b} of the values to be read - * (including the unsigned short that gives the number of - * values). - * @param buf buffer to be used to call {@link #readUTF8 readUTF8}, - * {@link #readClass(int, char[]) readClass} or {@link #readConst - * readConst}. - * @param named if the annotation values are named or not. - * @param av the visitor that must visit the values. - * @return the end offset of the annotation values. - */ - private int readAnnotationValues(int v, final char[] buf, - final boolean named, final AnnotationVisitor av) { - int i = readUnsignedShort(v); - v += 2; - if (named) { - for (; i > 0; --i) { - v = readAnnotationValue(v + 2, buf, readUTF8(v, buf), av); - } - } else { - for (; i > 0; --i) { - v = readAnnotationValue(v, buf, null, av); - } - } - if (av != null) { - av.visitEnd(); - } - return v; - } - - /** - * Reads a value of an annotation and makes the given visitor visit it. - * - * @param v the start offset in {@link #b b} of the value to be read - * (not including the value name constant pool index). - * @param buf buffer to be used to call {@link #readUTF8 readUTF8}, - * {@link #readClass(int, char[]) readClass} or {@link #readConst - * readConst}. - * @param name the name of the value to be read. - * @param av the visitor that must visit the value. - * @return the end offset of the annotation value. - */ - private int readAnnotationValue(int v, final char[] buf, final String name, - final AnnotationVisitor av) { - int i; - if (av == null) { - switch (b[v] & 0xFF) { - case 'e': // enum_const_value - return v + 5; - case '@': // annotation_value - return readAnnotationValues(v + 3, buf, true, null); - case '[': // array_value - return readAnnotationValues(v + 1, buf, false, null); - default: - return v + 3; - } - } - switch (b[v++] & 0xFF) { - case 'I': // pointer to CONSTANT_Integer - case 'J': // pointer to CONSTANT_Long - case 'F': // pointer to CONSTANT_Float - case 'D': // pointer to CONSTANT_Double - av.visit(name, readConst(readUnsignedShort(v), buf)); - v += 2; - break; - case 'B': // pointer to CONSTANT_Byte - av.visit(name, (byte) readInt(items[readUnsignedShort(v)])); - v += 2; - break; - case 'Z': // pointer to CONSTANT_Boolean - av.visit(name, - readInt(items[readUnsignedShort(v)]) == 0 ? Boolean.FALSE - : Boolean.TRUE); - v += 2; - break; - case 'S': // pointer to CONSTANT_Short - av.visit(name, (short) readInt(items[readUnsignedShort(v)])); - v += 2; - break; - case 'C': // pointer to CONSTANT_Char - av.visit(name, (char) readInt(items[readUnsignedShort(v)])); - v += 2; - break; - case 's': // pointer to CONSTANT_Utf8 - av.visit(name, readUTF8(v, buf)); - v += 2; - break; - case 'e': // enum_const_value - av.visitEnum(name, readUTF8(v, buf), readUTF8(v + 2, buf)); - v += 4; - break; - case 'c': // class_info - av.visit(name, Type.getType(readUTF8(v, buf))); - v += 2; - break; - case '@': // annotation_value - v = readAnnotationValues(v + 2, buf, true, - av.visitAnnotation(name, readUTF8(v, buf))); - break; - case '[': // array_value - int size = readUnsignedShort(v); - v += 2; - if (size == 0) { - return readAnnotationValues(v - 2, buf, false, - av.visitArray(name)); - } - switch (this.b[v++] & 0xFF) { - case 'B': - byte[] bv = new byte[size]; - for (i = 0; i < size; i++) { - bv[i] = (byte) readInt(items[readUnsignedShort(v)]); - v += 3; - } - av.visit(name, bv); - --v; - break; - case 'Z': - boolean[] zv = new boolean[size]; - for (i = 0; i < size; i++) { - zv[i] = readInt(items[readUnsignedShort(v)]) != 0; - v += 3; - } - av.visit(name, zv); - --v; - break; - case 'S': - short[] sv = new short[size]; - for (i = 0; i < size; i++) { - sv[i] = (short) readInt(items[readUnsignedShort(v)]); - v += 3; - } - av.visit(name, sv); - --v; - break; - case 'C': - char[] cv = new char[size]; - for (i = 0; i < size; i++) { - cv[i] = (char) readInt(items[readUnsignedShort(v)]); - v += 3; - } - av.visit(name, cv); - --v; - break; - case 'I': - int[] iv = new int[size]; - for (i = 0; i < size; i++) { - iv[i] = readInt(items[readUnsignedShort(v)]); - v += 3; - } - av.visit(name, iv); - --v; - break; - case 'J': - long[] lv = new long[size]; - for (i = 0; i < size; i++) { - lv[i] = readLong(items[readUnsignedShort(v)]); - v += 3; - } - av.visit(name, lv); - --v; - break; - case 'F': - float[] fv = new float[size]; - for (i = 0; i < size; i++) { - fv[i] = Float - .intBitsToFloat(readInt(items[readUnsignedShort(v)])); - v += 3; - } - av.visit(name, fv); - --v; - break; - case 'D': - double[] dv = new double[size]; - for (i = 0; i < size; i++) { - dv[i] = Double - .longBitsToDouble(readLong(items[readUnsignedShort(v)])); - v += 3; - } - av.visit(name, dv); - --v; - break; - default: - v = readAnnotationValues(v - 3, buf, false, av.visitArray(name)); - } - } - return v; - } - - /** - * Computes the implicit frame of the method currently being parsed (as - * defined in the given {@link Context}) and stores it in the given context. - * - * @param frame information about the class being parsed. - */ - private void getImplicitFrame(final Context frame) { - String desc = frame.desc; - Object[] locals = frame.local; - int local = 0; - if ((frame.access & Opcodes.ACC_STATIC) == 0) { - if ("".equals(frame.name)) { - locals[local++] = Opcodes.UNINITIALIZED_THIS; - } else { - locals[local++] = readClass(header + 2, frame.buffer); - } - } - int i = 1; - loop: - while (true) { - int j = i; - switch (desc.charAt(i++)) { - case 'Z': - case 'C': - case 'B': - case 'S': - case 'I': - locals[local++] = Opcodes.INTEGER; - break; - case 'F': - locals[local++] = Opcodes.FLOAT; - break; - case 'J': - locals[local++] = Opcodes.LONG; - break; - case 'D': - locals[local++] = Opcodes.DOUBLE; - break; - case '[': - while (desc.charAt(i) == '[') { - ++i; - } - if (desc.charAt(i) == 'L') { - ++i; - while (desc.charAt(i) != ';') { - ++i; - } - } - locals[local++] = desc.substring(j, ++i); - break; - case 'L': - while (desc.charAt(i) != ';') { - ++i; - } - locals[local++] = desc.substring(j + 1, i++); - break; - default: - break loop; - } - } - frame.localCount = local; - } - - /** - * Reads a stack map frame and stores the result in the given - * {@link Context} object. - * - * @param stackMap the start offset of a stack map frame in the class file. - * @param zip if the stack map frame at stackMap is compressed or not. - * @param unzip if the stack map frame must be uncompressed. - * @param frame where the parsed stack map frame must be stored. - * @return the offset of the first byte following the parsed frame. - */ - private int readFrame(int stackMap, boolean zip, boolean unzip, - Context frame) { - char[] c = frame.buffer; - Label[] labels = frame.labels; - int tag; - int delta; - if (zip) { - tag = b[stackMap++] & 0xFF; - } else { - tag = MethodWriter.FULL_FRAME; - frame.offset = -1; - } - frame.localDiff = 0; - if (tag < MethodWriter.SAME_LOCALS_1_STACK_ITEM_FRAME) { - delta = tag; - frame.mode = Opcodes.F_SAME; - frame.stackCount = 0; - } else if (tag < MethodWriter.RESERVED) { - delta = tag - MethodWriter.SAME_LOCALS_1_STACK_ITEM_FRAME; - stackMap = readFrameType(frame.stack, 0, stackMap, c, labels); - frame.mode = Opcodes.F_SAME1; - frame.stackCount = 1; - } else { - delta = readUnsignedShort(stackMap); - stackMap += 2; - if (tag == MethodWriter.SAME_LOCALS_1_STACK_ITEM_FRAME_EXTENDED) { - stackMap = readFrameType(frame.stack, 0, stackMap, c, labels); - frame.mode = Opcodes.F_SAME1; - frame.stackCount = 1; - } else if (tag >= MethodWriter.CHOP_FRAME - && tag < MethodWriter.SAME_FRAME_EXTENDED) { - frame.mode = Opcodes.F_CHOP; - frame.localDiff = MethodWriter.SAME_FRAME_EXTENDED - tag; - frame.localCount -= frame.localDiff; - frame.stackCount = 0; - } else if (tag == MethodWriter.SAME_FRAME_EXTENDED) { - frame.mode = Opcodes.F_SAME; - frame.stackCount = 0; - } else if (tag < MethodWriter.FULL_FRAME) { - int local = unzip ? frame.localCount : 0; - for (int i = tag - MethodWriter.SAME_FRAME_EXTENDED; i > 0; i--) { - stackMap = readFrameType(frame.local, local++, stackMap, c, - labels); - } - frame.mode = Opcodes.F_APPEND; - frame.localDiff = tag - MethodWriter.SAME_FRAME_EXTENDED; - frame.localCount += frame.localDiff; - frame.stackCount = 0; - } else { // if (tag == FULL_FRAME) { - frame.mode = Opcodes.F_FULL; - int n = readUnsignedShort(stackMap); - stackMap += 2; - frame.localDiff = n; - frame.localCount = n; - for (int local = 0; n > 0; n--) { - stackMap = readFrameType(frame.local, local++, stackMap, c, - labels); - } - n = readUnsignedShort(stackMap); - stackMap += 2; - frame.stackCount = n; - for (int stack = 0; n > 0; n--) { - stackMap = readFrameType(frame.stack, stack++, stackMap, c, - labels); - } - } - } - frame.offset += delta + 1; - readLabel(frame.offset, labels); - return stackMap; - } - - /** - * Reads a stack map frame type and stores it at the given index in the - * given array. - * - * @param frame the array where the parsed type must be stored. - * @param index the index in 'frame' where the parsed type must be stored. - * @param v the start offset of the stack map frame type to read. - * @param buf a buffer to read strings. - * @param labels the labels of the method currently being parsed, indexed by - * their offset. If the parsed type is an Uninitialized type, a - * new label for the corresponding NEW instruction is stored in - * this array if it does not already exist. - * @return the offset of the first byte after the parsed type. - */ - private int readFrameType(final Object[] frame, final int index, int v, - final char[] buf, final Label[] labels) { - int type = b[v++] & 0xFF; - switch (type) { - case 0: - frame[index] = Opcodes.TOP; - break; - case 1: - frame[index] = Opcodes.INTEGER; - break; - case 2: - frame[index] = Opcodes.FLOAT; - break; - case 3: - frame[index] = Opcodes.DOUBLE; - break; - case 4: - frame[index] = Opcodes.LONG; - break; - case 5: - frame[index] = Opcodes.NULL; - break; - case 6: - frame[index] = Opcodes.UNINITIALIZED_THIS; - break; - case 7: // Object - frame[index] = readClass(v, buf); - v += 2; - break; - default: // Uninitialized - frame[index] = readLabel(readUnsignedShort(v), labels); - v += 2; - } - return v; - } - - /** - * Returns the label corresponding to the given offset. The default - * implementation of this method creates a label for the given offset if it - * has not been already created. - * - * @param offset a bytecode offset in a method. - * @param labels the already created labels, indexed by their offset. If a - * label already exists for offset this method must not create a - * new one. Otherwise it must store the new label in this array. - * @return a non null Label, which must be equal to labels[offset]. - */ - protected Label readLabel(int offset, Label[] labels) { - if (labels[offset] == null) { - labels[offset] = new Label(); - } - return labels[offset]; - } - - /** - * Returns the start index of the attribute_info structure of this class. - * - * @return the start index of the attribute_info structure of this class. - */ - private int getAttributes() { - // skips the header - int u = header + 8 + readUnsignedShort(header + 6) * 2; - // skips fields and methods - for (int i = readUnsignedShort(u); i > 0; --i) { - for (int j = readUnsignedShort(u + 8); j > 0; --j) { - u += 6 + readInt(u + 12); - } - u += 8; - } - u += 2; - for (int i = readUnsignedShort(u); i > 0; --i) { - for (int j = readUnsignedShort(u + 8); j > 0; --j) { - u += 6 + readInt(u + 12); - } - u += 8; - } - // the attribute_info structure starts just after the methods - return u + 2; - } - - /** - * Reads an attribute in {@link #b b}. - * - * @param attrs prototypes of the attributes that must be parsed during the - * visit of the class. Any attribute whose type is not equal to - * the type of one the prototypes is ignored (i.e. an empty - * {@link Attribute} instance is returned). - * @param type the type of the attribute. - * @param off index of the first byte of the attribute's content in - * {@link #b b}. The 6 attribute header bytes, containing the - * type and the length of the attribute, are not taken into - * account here (they have already been read). - * @param len the length of the attribute's content. - * @param buf buffer to be used to call {@link #readUTF8 readUTF8}, - * {@link #readClass(int, char[]) readClass} or {@link #readConst - * readConst}. - * @param codeOff index of the first byte of code's attribute content in - * {@link #b b}, or -1 if the attribute to be read is not a code - * attribute. The 6 attribute header bytes, containing the type - * and the length of the attribute, are not taken into account - * here. - * @param labels the labels of the method's code, or null if the - * attribute to be read is not a code attribute. - * @return the attribute that has been read, or null to skip this - * attribute. - */ - private Attribute readAttribute(final Attribute[] attrs, final String type, - final int off, final int len, final char[] buf, final int codeOff, - final Label[] labels) { - for (int i = 0; i < attrs.length; ++i) { - if (attrs[i].type.equals(type)) { - return attrs[i].read(this, off, len, buf, codeOff, labels); - } - } - return new Attribute(type).read(this, off, len, null, -1, null); - } - - // ------------------------------------------------------------------------ - // Utility methods: low level parsing - // ------------------------------------------------------------------------ - - /** - * Returns the number of constant pool items in {@link #b b}. - * - * @return the number of constant pool items in {@link #b b}. - */ - public int getItemCount() { - return items.length; - } - - /** - * Returns the start index of the constant pool item in {@link #b b}, plus - * one. This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param item the index a constant pool item. - * @return the start index of the constant pool item in {@link #b b}, plus - * one. - */ - public int getItem(final int item) { - return items[item]; - } - - /** - * Returns the maximum length of the strings contained in the constant pool - * of the class. - * - * @return the maximum length of the strings contained in the constant pool - * of the class. - */ - public int getMaxStringLength() { - return maxStringLength; - } - - /** - * Reads a byte value in {@link #b b}. This method is intended for - * {@link Attribute} sub classes, and is normally not needed by class - * generators or adapters. - * - * @param index the start index of the value to be read in {@link #b b}. - * @return the read value. - */ - public int readByte(final int index) { - return b[index] & 0xFF; - } - - /** - * Reads an unsigned short value in {@link #b b}. This method is intended - * for {@link Attribute} sub classes, and is normally not needed by class - * generators or adapters. - * - * @param index the start index of the value to be read in {@link #b b}. - * @return the read value. - */ - public int readUnsignedShort(final int index) { - byte[] b = this.b; - return ((b[index] & 0xFF) << 8) | (b[index + 1] & 0xFF); - } - - /** - * Reads a signed short value in {@link #b b}. This method is intended - * for {@link Attribute} sub classes, and is normally not needed by class - * generators or adapters. - * - * @param index the start index of the value to be read in {@link #b b}. - * @return the read value. - */ - public short readShort(final int index) { - byte[] b = this.b; - return (short) (((b[index] & 0xFF) << 8) | (b[index + 1] & 0xFF)); - } - - /** - * Reads a signed int value in {@link #b b}. This method is intended for - * {@link Attribute} sub classes, and is normally not needed by class - * generators or adapters. - * - * @param index the start index of the value to be read in {@link #b b}. - * @return the read value. - */ - public int readInt(final int index) { - byte[] b = this.b; - return ((b[index] & 0xFF) << 24) | ((b[index + 1] & 0xFF) << 16) - | ((b[index + 2] & 0xFF) << 8) | (b[index + 3] & 0xFF); - } - - /** - * Reads a signed long value in {@link #b b}. This method is intended for - * {@link Attribute} sub classes, and is normally not needed by class - * generators or adapters. - * - * @param index the start index of the value to be read in {@link #b b}. - * @return the read value. - */ - public long readLong(final int index) { - long l1 = readInt(index); - long l0 = readInt(index + 4) & 0xFFFFFFFFL; - return (l1 << 32) | l0; - } - - /** - * Reads an UTF8 string constant pool item in {@link #b b}. This method - * is intended for {@link Attribute} sub classes, and is normally not needed - * by class generators or adapters. - * - * @param index the start index of an unsigned short value in {@link #b b}, - * whose value is the index of an UTF8 constant pool item. - * @param buf buffer to be used to read the item. This buffer must be - * sufficiently large. It is not automatically resized. - * @return the String corresponding to the specified UTF8 item. - */ - public String readUTF8(int index, final char[] buf) { - int item = readUnsignedShort(index); - if (index == 0 || item == 0) { - return null; - } - String s = strings[item]; - if (s != null) { - return s; - } - index = items[item]; - return strings[item] = readUTF(index + 2, readUnsignedShort(index), buf); - } - - /** - * Reads UTF8 string in {@link #b b}. - * - * @param index start offset of the UTF8 string to be read. - * @param utfLen length of the UTF8 string to be read. - * @param buf buffer to be used to read the string. This buffer must be - * sufficiently large. It is not automatically resized. - * @return the String corresponding to the specified UTF8 string. - */ - private String readUTF(int index, final int utfLen, final char[] buf) { - int endIndex = index + utfLen; - byte[] b = this.b; - int strLen = 0; - int c; - int st = 0; - char cc = 0; - while (index < endIndex) { - c = b[index++]; - switch (st) { - case 0: - c = c & 0xFF; - if (c < 0x80) { // 0xxxxxxx - buf[strLen++] = (char) c; - } else if (c < 0xE0 && c > 0xBF) { // 110x xxxx 10xx xxxx - cc = (char) (c & 0x1F); - st = 1; - } else { // 1110 xxxx 10xx xxxx 10xx xxxx - cc = (char) (c & 0x0F); - st = 2; - } - break; - - case 1: // byte 2 of 2-byte char or byte 3 of 3-byte char - buf[strLen++] = (char) ((cc << 6) | (c & 0x3F)); - st = 0; - break; - - case 2: // byte 2 of 3-byte char - cc = (char) ((cc << 6) | (c & 0x3F)); - st = 1; - break; - } - } - return new String(buf, 0, strLen); - } - - /** - * Reads a class constant pool item in {@link #b b}. This method is - * intended for {@link Attribute} sub classes, and is normally not needed by - * class generators or adapters. - * - * @param index the start index of an unsigned short value in {@link #b b}, - * whose value is the index of a class constant pool item. - * @param buf buffer to be used to read the item. This buffer must be - * sufficiently large. It is not automatically resized. - * @return the String corresponding to the specified class item. - */ - public String readClass(final int index, final char[] buf) { - // computes the start index of the CONSTANT_Class item in b - // and reads the CONSTANT_Utf8 item designated by - // the first two bytes of this CONSTANT_Class item - return readUTF8(items[readUnsignedShort(index)], buf); - } - - /** - * Reads a numeric or string constant pool item in {@link #b b}. This - * method is intended for {@link Attribute} sub classes, and is normally not - * needed by class generators or adapters. - * - * @param item the index of a constant pool item. - * @param buf buffer to be used to read the item. This buffer must be - * sufficiently large. It is not automatically resized. - * @return the {@link Integer}, {@link Float}, {@link Long}, {@link Double}, - * {@link String}, {@link Type} or {@link Handle} corresponding to - * the given constant pool item. - */ - public Object readConst(final int item, final char[] buf) { - int index = items[item]; - switch (b[index - 1]) { - case ClassWriter.INT: - return readInt(index); - case ClassWriter.FLOAT: - return Float.intBitsToFloat(readInt(index)); - case ClassWriter.LONG: - return readLong(index); - case ClassWriter.DOUBLE: - return Double.longBitsToDouble(readLong(index)); - case ClassWriter.CLASS: - return Type.getObjectType(readUTF8(index, buf)); - case ClassWriter.STR: - return readUTF8(index, buf); - case ClassWriter.MTYPE: - return Type.getMethodType(readUTF8(index, buf)); - default: // case ClassWriter.HANDLE_BASE + [1..9]: - int tag = readByte(index); - int[] items = this.items; - int cpIndex = items[readUnsignedShort(index + 1)]; - String owner = readClass(cpIndex, buf); - cpIndex = items[readUnsignedShort(cpIndex + 2)]; - String name = readUTF8(cpIndex, buf); - String desc = readUTF8(cpIndex + 2, buf); - return new Handle(tag, owner, name, desc); - } - } -} diff --git a/src/org/objectweb/asm/ClassVisitor.java b/src/org/objectweb/asm/ClassVisitor.java deleted file mode 100644 index de3f6f60b..000000000 --- a/src/org/objectweb/asm/ClassVisitor.java +++ /dev/null @@ -1,285 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A visitor to visit a Java class. The methods of this class must be called in - * the following order: visit [ visitSource ] [ - * visitOuterClass ] ( visitAnnotation | - * visitTypeAnnotation | visitAttribute )* ( - * visitInnerClass | visitField | visitMethod )* - * visitEnd. - * - * @author Eric Bruneton - */ -public abstract class ClassVisitor { - - /** - * The ASM API version implemented by this visitor. The value of this field - * must be one of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - protected final int api; - - /** - * The class visitor to which this visitor must delegate method calls. May - * be null. - */ - protected ClassVisitor cv; - - /** - * Constructs a new {@link ClassVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - public ClassVisitor(final int api) { - this(api, null); - } - - /** - * Constructs a new {@link ClassVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - * @param cv the class visitor to which this visitor must delegate method - * calls. May be null. - */ - public ClassVisitor(final int api, final ClassVisitor cv) { - if (api != Opcodes.ASM4 && api != Opcodes.ASM5) { - throw new IllegalArgumentException(); - } - this.api = api; - this.cv = cv; - } - - /** - * Visits the header of the class. - * - * @param version the class version. - * @param access the class's access flags (see {@link Opcodes}). This parameter - * also indicates if the class is deprecated. - * @param name the internal name of the class (see - * {@link Type#getInternalName() getInternalName}). - * @param signature the signature of this class. May be null if the class - * is not a generic one, and does not extend or implement generic - * classes or interfaces. - * @param superName the internal of name of the super class (see - * {@link Type#getInternalName() getInternalName}). For - * interfaces, the super class is {@link Object}. May be - * null, but only for the {@link Object} class. - * @param interfaces the internal names of the class's interfaces (see - * {@link Type#getInternalName() getInternalName}). May be - * null. - */ - public void visit(int version, int access, String name, String signature, - String superName, String[] interfaces) { - if (cv != null) { - cv.visit(version, access, name, signature, superName, interfaces); - } - } - - /** - * Visits the source of the class. - * - * @param source the name of the source file from which the class was compiled. - * May be null. - * @param debug additional debug information to compute the correspondance - * between source and compiled elements of the class. May be - * null. - */ - public void visitSource(String source, String debug) { - if (cv != null) { - cv.visitSource(source, debug); - } - } - - /** - * Visits the enclosing class of the class. This method must be called only - * if the class has an enclosing class. - * - * @param owner internal name of the enclosing class of the class. - * @param name the name of the method that contains the class, or - * null if the class is not enclosed in a method of its - * enclosing class. - * @param desc the descriptor of the method that contains the class, or - * null if the class is not enclosed in a method of its - * enclosing class. - */ - public void visitOuterClass(String owner, String name, String desc) { - if (cv != null) { - cv.visitOuterClass(owner, name, desc); - } - } - - /** - * Visits an annotation of the class. - * - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitAnnotation(String desc, boolean visible) { - if (cv != null) { - return cv.visitAnnotation(desc, visible); - } - return null; - } - - /** - * Visits an annotation on a type in the class signature. - * - * @param typeRef a reference to the annotated type. The sort of this type - * reference must be {@link TypeReference#CLASS_TYPE_PARAMETER - * CLASS_TYPE_PARAMETER}, - * {@link TypeReference#CLASS_TYPE_PARAMETER_BOUND - * CLASS_TYPE_PARAMETER_BOUND} or - * {@link TypeReference#CLASS_EXTENDS CLASS_EXTENDS}. See - * {@link TypeReference}. - * @param typePath the path to the annotated type argument, wildcard bound, array - * element type, or static inner type within 'typeRef'. May be - * null if the annotation targets 'typeRef' as a whole. - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitTypeAnnotation(int typeRef, - TypePath typePath, String desc, boolean visible) { - if (api < Opcodes.ASM5) { - throw new RuntimeException(); - } - if (cv != null) { - return cv.visitTypeAnnotation(typeRef, typePath, desc, visible); - } - return null; - } - - /** - * Visits a non standard attribute of the class. - * - * @param attr an attribute. - */ - public void visitAttribute(Attribute attr) { - if (cv != null) { - cv.visitAttribute(attr); - } - } - - /** - * Visits information about an inner class. This inner class is not - * necessarily a member of the class being visited. - * - * @param name the internal name of an inner class (see - * {@link Type#getInternalName() getInternalName}). - * @param outerName the internal name of the class to which the inner class - * belongs (see {@link Type#getInternalName() getInternalName}). - * May be null for not member classes. - * @param innerName the (simple) name of the inner class inside its enclosing - * class. May be null for anonymous inner classes. - * @param access the access flags of the inner class as originally declared in - * the enclosing class. - */ - public void visitInnerClass(String name, String outerName, - String innerName, int access) { - if (cv != null) { - cv.visitInnerClass(name, outerName, innerName, access); - } - } - - /** - * Visits a field of the class. - * - * @param access the field's access flags (see {@link Opcodes}). This parameter - * also indicates if the field is synthetic and/or deprecated. - * @param name the field's name. - * @param desc the field's descriptor (see {@link Type Type}). - * @param signature the field's signature. May be null if the field's - * type does not use generic types. - * @param value the field's initial value. This parameter, which may be - * null if the field does not have an initial value, - * must be an {@link Integer}, a {@link Float}, a {@link Long}, a - * {@link Double} or a {@link String} (for int, - * float, long or String fields - * respectively). This parameter is only used for static - * fields. Its value is ignored for non static fields, which - * must be initialized through bytecode instructions in - * constructors or methods. - * @return a visitor to visit field annotations and attributes, or - * null if this class visitor is not interested in visiting - * these annotations and attributes. - */ - public FieldVisitor visitField(int access, String name, String desc, - String signature, Object value) { - if (cv != null) { - return cv.visitField(access, name, desc, signature, value); - } - return null; - } - - /** - * Visits a method of the class. This method must return a new - * {@link MethodVisitor} instance (or null) each time it is called, - * i.e., it should not return a previously returned visitor. - * - * @param access the method's access flags (see {@link Opcodes}). This - * parameter also indicates if the method is synthetic and/or - * deprecated. - * @param name the method's name. - * @param desc the method's descriptor (see {@link Type Type}). - * @param signature the method's signature. May be null if the method - * parameters, return type and exceptions do not use generic - * types. - * @param exceptions the internal names of the method's exception classes (see - * {@link Type#getInternalName() getInternalName}). May be - * null. - * @return an object to visit the byte code of the method, or null - * if this class visitor is not interested in visiting the code of - * this method. - */ - public MethodVisitor visitMethod(int access, String name, String desc, - String signature, String[] exceptions) { - if (cv != null) { - return cv.visitMethod(access, name, desc, signature, exceptions); - } - return null; - } - - /** - * Visits the end of the class. This method, which is the last one to be - * called, is used to inform the visitor that all the fields and methods of - * the class have been visited. - */ - public void visitEnd() { - if (cv != null) { - cv.visitEnd(); - } - } -} diff --git a/src/org/objectweb/asm/ClassWriter.java b/src/org/objectweb/asm/ClassWriter.java deleted file mode 100644 index 68d4df934..000000000 --- a/src/org/objectweb/asm/ClassWriter.java +++ /dev/null @@ -1,1710 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A {@link ClassVisitor} that generates classes in bytecode form. More - * precisely this visitor generates a byte array conforming to the Java class - * file format. It can be used alone, to generate a Java class "from scratch", - * or with one or more {@link ClassReader ClassReader} and adapter class visitor - * to generate a modified class from one or more existing Java classes. - * - * @author Eric Bruneton - */ -public class ClassWriter extends ClassVisitor { - - /** - * Flag to automatically compute the maximum stack size and the maximum - * number of local variables of methods. If this flag is set, then the - * arguments of the {@link MethodVisitor#visitMaxs visitMaxs} method of the - * {@link MethodVisitor} returned by the {@link #visitMethod visitMethod} - * method will be ignored, and computed automatically from the signature and - * the bytecode of each method. - * - * @see #ClassWriter(int) - */ - public static final int COMPUTE_MAXS = 1; - - /** - * Flag to automatically compute the stack map frames of methods from - * scratch. If this flag is set, then the calls to the - * {@link MethodVisitor#visitFrame} method are ignored, and the stack map - * frames are recomputed from the methods bytecode. The arguments of the - * {@link MethodVisitor#visitMaxs visitMaxs} method are also ignored and - * recomputed from the bytecode. In other words, computeFrames implies - * computeMaxs. - * - * @see #ClassWriter(int) - */ - public static final int COMPUTE_FRAMES = 2; - - /** - * Pseudo access flag to distinguish between the synthetic attribute and the - * synthetic access flag. - */ - static final int ACC_SYNTHETIC_ATTRIBUTE = 0x40000; - - /** - * Factor to convert from ACC_SYNTHETIC_ATTRIBUTE to Opcode.ACC_SYNTHETIC. - */ - static final int TO_ACC_SYNTHETIC = ACC_SYNTHETIC_ATTRIBUTE - / Opcodes.ACC_SYNTHETIC; - - /** - * The type of instructions without any argument. - */ - static final int NOARG_INSN = 0; - - /** - * The type of instructions with an signed byte argument. - */ - static final int SBYTE_INSN = 1; - - /** - * The type of instructions with an signed short argument. - */ - static final int SHORT_INSN = 2; - - /** - * The type of instructions with a local variable index argument. - */ - static final int VAR_INSN = 3; - - /** - * The type of instructions with an implicit local variable index argument. - */ - static final int IMPLVAR_INSN = 4; - - /** - * The type of instructions with a type descriptor argument. - */ - static final int TYPE_INSN = 5; - - /** - * The type of field and method invocations instructions. - */ - static final int FIELDORMETH_INSN = 6; - - /** - * The type of the INVOKEINTERFACE/INVOKEDYNAMIC instruction. - */ - static final int ITFMETH_INSN = 7; - - /** - * The type of the INVOKEDYNAMIC instruction. - */ - static final int INDYMETH_INSN = 8; - - /** - * The type of instructions with a 2 bytes bytecode offset label. - */ - static final int LABEL_INSN = 9; - - /** - * The type of instructions with a 4 bytes bytecode offset label. - */ - static final int LABELW_INSN = 10; - - /** - * The type of the LDC instruction. - */ - static final int LDC_INSN = 11; - - /** - * The type of the LDC_W and LDC2_W instructions. - */ - static final int LDCW_INSN = 12; - - /** - * The type of the IINC instruction. - */ - static final int IINC_INSN = 13; - - /** - * The type of the TABLESWITCH instruction. - */ - static final int TABL_INSN = 14; - - /** - * The type of the LOOKUPSWITCH instruction. - */ - static final int LOOK_INSN = 15; - - /** - * The type of the MULTIANEWARRAY instruction. - */ - static final int MANA_INSN = 16; - - /** - * The type of the WIDE instruction. - */ - static final int WIDE_INSN = 17; - - /** - * The instruction types of all JVM opcodes. - */ - static final byte[] TYPE; - - /** - * The type of CONSTANT_Class constant pool items. - */ - static final int CLASS = 7; - - /** - * The type of CONSTANT_Fieldref constant pool items. - */ - static final int FIELD = 9; - - /** - * The type of CONSTANT_Methodref constant pool items. - */ - static final int METH = 10; - - /** - * The type of CONSTANT_InterfaceMethodref constant pool items. - */ - static final int IMETH = 11; - - /** - * The type of CONSTANT_String constant pool items. - */ - static final int STR = 8; - - /** - * The type of CONSTANT_Integer constant pool items. - */ - static final int INT = 3; - - /** - * The type of CONSTANT_Float constant pool items. - */ - static final int FLOAT = 4; - - /** - * The type of CONSTANT_Long constant pool items. - */ - static final int LONG = 5; - - /** - * The type of CONSTANT_Double constant pool items. - */ - static final int DOUBLE = 6; - - /** - * The type of CONSTANT_NameAndType constant pool items. - */ - static final int NAME_TYPE = 12; - - /** - * The type of CONSTANT_Utf8 constant pool items. - */ - static final int UTF8 = 1; - - /** - * The type of CONSTANT_MethodType constant pool items. - */ - static final int MTYPE = 16; - - /** - * The type of CONSTANT_MethodHandle constant pool items. - */ - static final int HANDLE = 15; - - /** - * The type of CONSTANT_InvokeDynamic constant pool items. - */ - static final int INDY = 18; - - /** - * The base value for all CONSTANT_MethodHandle constant pool items. - * Internally, ASM store the 9 variations of CONSTANT_MethodHandle into 9 - * different items. - */ - static final int HANDLE_BASE = 20; - - /** - * Normal type Item stored in the ClassWriter {@link ClassWriter#typeTable}, - * instead of the constant pool, in order to avoid clashes with normal - * constant pool items in the ClassWriter constant pool's hash table. - */ - static final int TYPE_NORMAL = 30; - - /** - * Uninitialized type Item stored in the ClassWriter - * {@link ClassWriter#typeTable}, instead of the constant pool, in order to - * avoid clashes with normal constant pool items in the ClassWriter constant - * pool's hash table. - */ - static final int TYPE_UNINIT = 31; - - /** - * Merged type Item stored in the ClassWriter {@link ClassWriter#typeTable}, - * instead of the constant pool, in order to avoid clashes with normal - * constant pool items in the ClassWriter constant pool's hash table. - */ - static final int TYPE_MERGED = 32; - - /** - * The type of BootstrapMethods items. These items are stored in a special - * class attribute named BootstrapMethods and not in the constant pool. - */ - static final int BSM = 33; - - /** - * The class reader from which this class writer was constructed, if any. - */ - ClassReader cr; - - /** - * Minor and major version numbers of the class to be generated. - */ - int version; - - /** - * Index of the next item to be added in the constant pool. - */ - int index; - - /** - * The constant pool of this class. - */ - final ByteVector pool; - - /** - * The constant pool's hash table data. - */ - Item[] items; - - /** - * The threshold of the constant pool's hash table. - */ - int threshold; - - /** - * A reusable key used to look for items in the {@link #items} hash table. - */ - final Item key; - - /** - * A reusable key used to look for items in the {@link #items} hash table. - */ - final Item key2; - - /** - * A reusable key used to look for items in the {@link #items} hash table. - */ - final Item key3; - - /** - * A reusable key used to look for items in the {@link #items} hash table. - */ - final Item key4; - - /** - * A type table used to temporarily store internal names that will not - * necessarily be stored in the constant pool. This type table is used by - * the control flow and data flow analysis algorithm used to compute stack - * map frames from scratch. This array associates to each index i - * the Item whose index is i. All Item objects stored in this array - * are also stored in the {@link #items} hash table. These two arrays allow - * to retrieve an Item from its index or, conversely, to get the index of an - * Item from its value. Each Item stores an internal name in its - * {@link Item#strVal1} field. - */ - Item[] typeTable; - - /** - * Number of elements in the {@link #typeTable} array. - */ - private short typeCount; - - /** - * The access flags of this class. - */ - private int access; - - /** - * The constant pool item that contains the internal name of this class. - */ - private int name; - - /** - * The internal name of this class. - */ - String thisName; - - /** - * The constant pool item that contains the signature of this class. - */ - private int signature; - - /** - * The constant pool item that contains the internal name of the super class - * of this class. - */ - private int superName; - - /** - * Number of interfaces implemented or extended by this class or interface. - */ - private int interfaceCount; - - /** - * The interfaces implemented or extended by this class or interface. More - * precisely, this array contains the indexes of the constant pool items - * that contain the internal names of these interfaces. - */ - private int[] interfaces; - - /** - * The index of the constant pool item that contains the name of the source - * file from which this class was compiled. - */ - private int sourceFile; - - /** - * The SourceDebug attribute of this class. - */ - private ByteVector sourceDebug; - - /** - * The constant pool item that contains the name of the enclosing class of - * this class. - */ - private int enclosingMethodOwner; - - /** - * The constant pool item that contains the name and descriptor of the - * enclosing method of this class. - */ - private int enclosingMethod; - - /** - * The runtime visible annotations of this class. - */ - private AnnotationWriter anns; - - /** - * The runtime invisible annotations of this class. - */ - private AnnotationWriter ianns; - - /** - * The runtime visible type annotations of this class. - */ - private AnnotationWriter tanns; - - /** - * The runtime invisible type annotations of this class. - */ - private AnnotationWriter itanns; - - /** - * The non standard attributes of this class. - */ - private Attribute attrs; - - /** - * The number of entries in the InnerClasses attribute. - */ - private int innerClassesCount; - - /** - * The InnerClasses attribute. - */ - private ByteVector innerClasses; - - /** - * The number of entries in the BootstrapMethods attribute. - */ - int bootstrapMethodsCount; - - /** - * The BootstrapMethods attribute. - */ - ByteVector bootstrapMethods; - - /** - * The fields of this class. These fields are stored in a linked list of - * {@link FieldWriter} objects, linked to each other by their - * {@link FieldWriter#fv} field. This field stores the first element of this - * list. - */ - FieldWriter firstField; - - /** - * The fields of this class. These fields are stored in a linked list of - * {@link FieldWriter} objects, linked to each other by their - * {@link FieldWriter#fv} field. This field stores the last element of this - * list. - */ - FieldWriter lastField; - - /** - * The methods of this class. These methods are stored in a linked list of - * {@link MethodWriter} objects, linked to each other by their - * {@link MethodWriter#mv} field. This field stores the first element of - * this list. - */ - MethodWriter firstMethod; - - /** - * The methods of this class. These methods are stored in a linked list of - * {@link MethodWriter} objects, linked to each other by their - * {@link MethodWriter#mv} field. This field stores the last element of this - * list. - */ - MethodWriter lastMethod; - - /** - * true if the maximum stack size and number of local variables - * must be automatically computed. - */ - private boolean computeMaxs; - - /** - * true if the stack map frames must be recomputed from scratch. - */ - private boolean computeFrames; - - /** - * true if the stack map tables of this class are invalid. The - * {@link MethodWriter#resizeInstructions} method cannot transform existing - * stack map tables, and so produces potentially invalid classes when it is - * executed. In this case the class is reread and rewritten with the - * {@link #COMPUTE_FRAMES} option (the resizeInstructions method can resize - * stack map tables when this option is used). - */ - boolean invalidFrames; - - // ------------------------------------------------------------------------ - // Static initializer - // ------------------------------------------------------------------------ - - /** - * Computes the instruction types of JVM opcodes. - */ - static { - int i; - byte[] b = new byte[220]; - String s = "AAAAAAAAAAAAAAAABCLMMDDDDDEEEEEEEEEEEEEEEEEEEEAAAAAAAADD" - + "DDDEEEEEEEEEEEEEEEEEEEEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" - + "AAAAAAAAAAAAAAAAANAAAAAAAAAAAAAAAAAAAAJJJJJJJJJJJJJJJJDOPAA" - + "AAAAGGGGGGGHIFBFAAFFAARQJJKKJJJJJJJJJJJJJJJJJJ"; - for (i = 0; i < b.length; ++i) { - b[i] = (byte) (s.charAt(i) - 'A'); - } - TYPE = b; - - // code to generate the above string - // - // // SBYTE_INSN instructions - // b[Constants.NEWARRAY] = SBYTE_INSN; - // b[Constants.BIPUSH] = SBYTE_INSN; - // - // // SHORT_INSN instructions - // b[Constants.SIPUSH] = SHORT_INSN; - // - // // (IMPL)VAR_INSN instructions - // b[Constants.RET] = VAR_INSN; - // for (i = Constants.ILOAD; i <= Constants.ALOAD; ++i) { - // b[i] = VAR_INSN; - // } - // for (i = Constants.ISTORE; i <= Constants.ASTORE; ++i) { - // b[i] = VAR_INSN; - // } - // for (i = 26; i <= 45; ++i) { // ILOAD_0 to ALOAD_3 - // b[i] = IMPLVAR_INSN; - // } - // for (i = 59; i <= 78; ++i) { // ISTORE_0 to ASTORE_3 - // b[i] = IMPLVAR_INSN; - // } - // - // // TYPE_INSN instructions - // b[Constants.NEW] = TYPE_INSN; - // b[Constants.ANEWARRAY] = TYPE_INSN; - // b[Constants.CHECKCAST] = TYPE_INSN; - // b[Constants.INSTANCEOF] = TYPE_INSN; - // - // // (Set)FIELDORMETH_INSN instructions - // for (i = Constants.GETSTATIC; i <= Constants.INVOKESTATIC; ++i) { - // b[i] = FIELDORMETH_INSN; - // } - // b[Constants.INVOKEINTERFACE] = ITFMETH_INSN; - // b[Constants.INVOKEDYNAMIC] = INDYMETH_INSN; - // - // // LABEL(W)_INSN instructions - // for (i = Constants.IFEQ; i <= Constants.JSR; ++i) { - // b[i] = LABEL_INSN; - // } - // b[Constants.IFNULL] = LABEL_INSN; - // b[Constants.IFNONNULL] = LABEL_INSN; - // b[200] = LABELW_INSN; // GOTO_W - // b[201] = LABELW_INSN; // JSR_W - // // temporary opcodes used internally by ASM - see Label and - // MethodWriter - // for (i = 202; i < 220; ++i) { - // b[i] = LABEL_INSN; - // } - // - // // LDC(_W) instructions - // b[Constants.LDC] = LDC_INSN; - // b[19] = LDCW_INSN; // LDC_W - // b[20] = LDCW_INSN; // LDC2_W - // - // // special instructions - // b[Constants.IINC] = IINC_INSN; - // b[Constants.TABLESWITCH] = TABL_INSN; - // b[Constants.LOOKUPSWITCH] = LOOK_INSN; - // b[Constants.MULTIANEWARRAY] = MANA_INSN; - // b[196] = WIDE_INSN; // WIDE - // - // for (i = 0; i < b.length; ++i) { - // System.err.print((char)('A' + b[i])); - // } - // System.err.println(); - } - - // ------------------------------------------------------------------------ - // Constructor - // ------------------------------------------------------------------------ - - /** - * Constructs a new {@link ClassWriter} object. - * - * @param flags option flags that can be used to modify the default behavior - * of this class. See {@link #COMPUTE_MAXS}, - * {@link #COMPUTE_FRAMES}. - */ - public ClassWriter(final int flags) { - super(Opcodes.ASM5); - index = 1; - pool = new ByteVector(); - items = new Item[256]; - threshold = (int) (0.75d * items.length); - key = new Item(); - key2 = new Item(); - key3 = new Item(); - key4 = new Item(); - this.computeMaxs = (flags & COMPUTE_MAXS) != 0; - this.computeFrames = (flags & COMPUTE_FRAMES) != 0; - } - - /** - * Constructs a new {@link ClassWriter} object and enables optimizations for - * "mostly add" bytecode transformations. These optimizations are the - * following: - *

- *

    - *
  • The constant pool from the original class is copied as is in the new - * class, which saves time. New constant pool entries will be added at the - * end if necessary, but unused constant pool entries won't be - * removed.
    • - *
  • Methods that are not transformed are copied as is in the new class, - * directly from the original class bytecode (i.e. without emitting visit - * events for all the method instructions), which saves a lot of - * time. Untransformed methods are detected by the fact that the - * {@link ClassReader} receives {@link MethodVisitor} objects that come from - * a {@link ClassWriter} (and not from any other {@link ClassVisitor} - * instance).
    • - *
- * - * @param classReader the {@link ClassReader} used to read the original class. It - * will be used to copy the entire constant pool from the - * original class and also to copy other fragments of original - * bytecode where applicable. - * @param flags option flags that can be used to modify the default behavior - * of this class. These option flags do not affect methods - * that are copied as is in the new class. This means that the - * maximum stack size nor the stack frames will be computed for - * these methods. See {@link #COMPUTE_MAXS}, - * {@link #COMPUTE_FRAMES}. - */ - public ClassWriter(final ClassReader classReader, final int flags) { - this(flags); - classReader.copyPool(this); - this.cr = classReader; - } - - // ------------------------------------------------------------------------ - // Implementation of the ClassVisitor abstract class - // ------------------------------------------------------------------------ - - @Override - public final void visit(final int version, final int access, - final String name, final String signature, final String superName, - final String[] interfaces) { - this.version = version; - this.access = access; - this.name = newClass(name); - thisName = name; - if (ClassReader.SIGNATURES && signature != null) { - this.signature = newUTF8(signature); - } - this.superName = superName == null ? 0 : newClass(superName); - if (interfaces != null && interfaces.length > 0) { - interfaceCount = interfaces.length; - this.interfaces = new int[interfaceCount]; - for (int i = 0; i < interfaceCount; ++i) { - this.interfaces[i] = newClass(interfaces[i]); - } - } - } - - @Override - public final void visitSource(final String file, final String debug) { - if (file != null) { - sourceFile = newUTF8(file); - } - if (debug != null) { - sourceDebug = new ByteVector().encodeUTF8(debug, 0, - Integer.MAX_VALUE); - } - } - - @Override - public final void visitOuterClass(final String owner, final String name, - final String desc) { - enclosingMethodOwner = newClass(owner); - if (name != null && desc != null) { - enclosingMethod = newNameType(name, desc); - } - } - - @Override - public final AnnotationVisitor visitAnnotation(final String desc, - final boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write type, and reserve space for values count - bv.putShort(newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(this, true, bv, bv, 2); - if (visible) { - aw.next = anns; - anns = aw; - } else { - aw.next = ianns; - ianns = aw; - } - return aw; - } - - @Override - public final AnnotationVisitor visitTypeAnnotation(int typeRef, - TypePath typePath, final String desc, final boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write target_type and target_info - AnnotationWriter.putTarget(typeRef, typePath, bv); - // write type, and reserve space for values count - bv.putShort(newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(this, true, bv, bv, - bv.length - 2); - if (visible) { - aw.next = tanns; - tanns = aw; - } else { - aw.next = itanns; - itanns = aw; - } - return aw; - } - - @Override - public final void visitAttribute(final Attribute attr) { - attr.next = attrs; - attrs = attr; - } - - @Override - public final void visitInnerClass(final String name, - final String outerName, final String innerName, final int access) { - if (innerClasses == null) { - innerClasses = new ByteVector(); - } - // Sec. 4.7.6 of the JVMS states "Every CONSTANT_Class_info entry in the - // constant_pool table which represents a class or interface C that is - // not a package member must have exactly one corresponding entry in the - // classes array". To avoid duplicates we keep track in the intVal field - // of the Item of each CONSTANT_Class_info entry C whether an inner - // class entry has already been added for C (this field is unused for - // class entries, and changing its value does not change the hashcode - // and equality tests). If so we store the index of this inner class - // entry (plus one) in intVal. This hack allows duplicate detection in - // O(1) time. - Item nameItem = newClassItem(name); - if (nameItem.intVal == 0) { - ++innerClassesCount; - innerClasses.putShort(nameItem.index); - innerClasses.putShort(outerName == null ? 0 : newClass(outerName)); - innerClasses.putShort(innerName == null ? 0 : newUTF8(innerName)); - innerClasses.putShort(access); - nameItem.intVal = innerClassesCount; - } else { - // Compare the inner classes entry nameItem.intVal - 1 with the - // arguments of this method and throw an exception if there is a - // difference? - } - } - - @Override - public final FieldVisitor visitField(final int access, final String name, - final String desc, final String signature, final Object value) { - return new FieldWriter(this, access, name, desc, signature, value); - } - - @Override - public final MethodVisitor visitMethod(final int access, final String name, - final String desc, final String signature, final String[] exceptions) { - return new MethodWriter(this, access, name, desc, signature, - exceptions, computeMaxs, computeFrames); - } - - @Override - public final void visitEnd() { - } - - // ------------------------------------------------------------------------ - // Other public methods - // ------------------------------------------------------------------------ - - /** - * Returns the bytecode of the class that was build with this class writer. - * - * @return the bytecode of the class that was build with this class writer. - */ - public byte[] toByteArray() { - if (index > 0xFFFF) { - throw new RuntimeException("Class file too large!"); - } - // computes the real size of the bytecode of this class - int size = 24 + 2 * interfaceCount; - int nbFields = 0; - FieldWriter fb = firstField; - while (fb != null) { - ++nbFields; - size += fb.getSize(); - fb = (FieldWriter) fb.fv; - } - int nbMethods = 0; - MethodWriter mb = firstMethod; - while (mb != null) { - ++nbMethods; - size += mb.getSize(); - mb = (MethodWriter) mb.mv; - } - int attributeCount = 0; - if (bootstrapMethods != null) { - // we put it as first attribute in order to improve a bit - // ClassReader.copyBootstrapMethods - ++attributeCount; - size += 8 + bootstrapMethods.length; - newUTF8("BootstrapMethods"); - } - if (ClassReader.SIGNATURES && signature != 0) { - ++attributeCount; - size += 8; - newUTF8("Signature"); - } - if (sourceFile != 0) { - ++attributeCount; - size += 8; - newUTF8("SourceFile"); - } - if (sourceDebug != null) { - ++attributeCount; - size += sourceDebug.length + 6; - newUTF8("SourceDebugExtension"); - } - if (enclosingMethodOwner != 0) { - ++attributeCount; - size += 10; - newUTF8("EnclosingMethod"); - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - ++attributeCount; - size += 6; - newUTF8("Deprecated"); - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((version & 0xFFFF) < Opcodes.V1_5 - || (access & ACC_SYNTHETIC_ATTRIBUTE) != 0) { - ++attributeCount; - size += 6; - newUTF8("Synthetic"); - } - } - if (innerClasses != null) { - ++attributeCount; - size += 8 + innerClasses.length; - newUTF8("InnerClasses"); - } - if (ClassReader.ANNOTATIONS && anns != null) { - ++attributeCount; - size += 8 + anns.getSize(); - newUTF8("RuntimeVisibleAnnotations"); - } - if (ClassReader.ANNOTATIONS && ianns != null) { - ++attributeCount; - size += 8 + ianns.getSize(); - newUTF8("RuntimeInvisibleAnnotations"); - } - if (ClassReader.ANNOTATIONS && tanns != null) { - ++attributeCount; - size += 8 + tanns.getSize(); - newUTF8("RuntimeVisibleTypeAnnotations"); - } - if (ClassReader.ANNOTATIONS && itanns != null) { - ++attributeCount; - size += 8 + itanns.getSize(); - newUTF8("RuntimeInvisibleTypeAnnotations"); - } - if (attrs != null) { - attributeCount += attrs.getCount(); - size += attrs.getSize(this, null, 0, -1, -1); - } - size += pool.length; - // allocates a byte vector of this size, in order to avoid unnecessary - // arraycopy operations in the ByteVector.enlarge() method - ByteVector out = new ByteVector(size); - out.putInt(0xCAFEBABE).putInt(version); - out.putShort(index).putByteArray(pool.data, 0, pool.length); - int mask = Opcodes.ACC_DEPRECATED | ACC_SYNTHETIC_ATTRIBUTE - | ((access & ACC_SYNTHETIC_ATTRIBUTE) / TO_ACC_SYNTHETIC); - out.putShort(access & ~mask).putShort(name).putShort(superName); - out.putShort(interfaceCount); - for (int i = 0; i < interfaceCount; ++i) { - out.putShort(interfaces[i]); - } - out.putShort(nbFields); - fb = firstField; - while (fb != null) { - fb.put(out); - fb = (FieldWriter) fb.fv; - } - out.putShort(nbMethods); - mb = firstMethod; - while (mb != null) { - mb.put(out); - mb = (MethodWriter) mb.mv; - } - out.putShort(attributeCount); - if (bootstrapMethods != null) { - out.putShort(newUTF8("BootstrapMethods")); - out.putInt(bootstrapMethods.length + 2).putShort( - bootstrapMethodsCount); - out.putByteArray(bootstrapMethods.data, 0, bootstrapMethods.length); - } - if (ClassReader.SIGNATURES && signature != 0) { - out.putShort(newUTF8("Signature")).putInt(2).putShort(signature); - } - if (sourceFile != 0) { - out.putShort(newUTF8("SourceFile")).putInt(2).putShort(sourceFile); - } - if (sourceDebug != null) { - int len = sourceDebug.length; - out.putShort(newUTF8("SourceDebugExtension")).putInt(len); - out.putByteArray(sourceDebug.data, 0, len); - } - if (enclosingMethodOwner != 0) { - out.putShort(newUTF8("EnclosingMethod")).putInt(4); - out.putShort(enclosingMethodOwner).putShort(enclosingMethod); - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - out.putShort(newUTF8("Deprecated")).putInt(0); - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((version & 0xFFFF) < Opcodes.V1_5 - || (access & ACC_SYNTHETIC_ATTRIBUTE) != 0) { - out.putShort(newUTF8("Synthetic")).putInt(0); - } - } - if (innerClasses != null) { - out.putShort(newUTF8("InnerClasses")); - out.putInt(innerClasses.length + 2).putShort(innerClassesCount); - out.putByteArray(innerClasses.data, 0, innerClasses.length); - } - if (ClassReader.ANNOTATIONS && anns != null) { - out.putShort(newUTF8("RuntimeVisibleAnnotations")); - anns.put(out); - } - if (ClassReader.ANNOTATIONS && ianns != null) { - out.putShort(newUTF8("RuntimeInvisibleAnnotations")); - ianns.put(out); - } - if (ClassReader.ANNOTATIONS && tanns != null) { - out.putShort(newUTF8("RuntimeVisibleTypeAnnotations")); - tanns.put(out); - } - if (ClassReader.ANNOTATIONS && itanns != null) { - out.putShort(newUTF8("RuntimeInvisibleTypeAnnotations")); - itanns.put(out); - } - if (attrs != null) { - attrs.put(this, null, 0, -1, -1, out); - } - if (invalidFrames) { - anns = null; - ianns = null; - attrs = null; - innerClassesCount = 0; - innerClasses = null; - bootstrapMethodsCount = 0; - bootstrapMethods = null; - firstField = null; - lastField = null; - firstMethod = null; - lastMethod = null; - computeMaxs = false; - computeFrames = true; - invalidFrames = false; - new ClassReader(out.data).accept(this, ClassReader.SKIP_FRAMES); - return toByteArray(); - } - return out.data; - } - - // ------------------------------------------------------------------------ - // Utility methods: constant pool management - // ------------------------------------------------------------------------ - - /** - * Adds a number or string constant to the constant pool of the class being - * build. Does nothing if the constant pool already contains a similar item. - * - * @param cst the value of the constant to be added to the constant pool. - * This parameter must be an {@link Integer}, a {@link Float}, a - * {@link Long}, a {@link Double}, a {@link String} or a - * {@link Type}. - * @return a new or already existing constant item with the given value. - */ - Item newConstItem(final Object cst) { - if (cst instanceof Integer) { - int val = ((Integer) cst).intValue(); - return newInteger(val); - } else if (cst instanceof Byte) { - int val = ((Byte) cst).intValue(); - return newInteger(val); - } else if (cst instanceof Character) { - int val = ((Character) cst).charValue(); - return newInteger(val); - } else if (cst instanceof Short) { - int val = ((Short) cst).intValue(); - return newInteger(val); - } else if (cst instanceof Boolean) { - int val = ((Boolean) cst).booleanValue() ? 1 : 0; - return newInteger(val); - } else if (cst instanceof Float) { - float val = ((Float) cst).floatValue(); - return newFloat(val); - } else if (cst instanceof Long) { - long val = ((Long) cst).longValue(); - return newLong(val); - } else if (cst instanceof Double) { - double val = ((Double) cst).doubleValue(); - return newDouble(val); - } else if (cst instanceof String) { - return newString((String) cst); - } else if (cst instanceof Type) { - Type t = (Type) cst; - int s = t.getSort(); - if (s == Type.OBJECT) { - return newClassItem(t.getInternalName()); - } else if (s == Type.METHOD) { - return newMethodTypeItem(t.getDescriptor()); - } else { // s == primitive type or array - return newClassItem(t.getDescriptor()); - } - } else if (cst instanceof Handle) { - Handle h = (Handle) cst; - return newHandleItem(h.tag, h.owner, h.name, h.desc); - } else { - throw new IllegalArgumentException("value " + cst); - } - } - - /** - * Adds a number or string constant to the constant pool of the class being - * build. Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param cst the value of the constant to be added to the constant pool. - * This parameter must be an {@link Integer}, a {@link Float}, a - * {@link Long}, a {@link Double} or a {@link String}. - * @return the index of a new or already existing constant item with the - * given value. - */ - public int newConst(final Object cst) { - return newConstItem(cst).index; - } - - /** - * Adds an UTF8 string to the constant pool of the class being build. Does - * nothing if the constant pool already contains a similar item. This - * method is intended for {@link Attribute} sub classes, and is normally not - * needed by class generators or adapters. - * - * @param value the String value. - * @return the index of a new or already existing UTF8 item. - */ - public int newUTF8(final String value) { - key.set(UTF8, value, null, null); - Item result = get(key); - if (result == null) { - pool.putByte(UTF8).putUTF8(value); - result = new Item(index++, key); - put(result); - } - return result.index; - } - - /** - * Adds a class reference to the constant pool of the class being build. - * Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param value the internal name of the class. - * @return a new or already existing class reference item. - */ - Item newClassItem(final String value) { - key2.set(CLASS, value, null, null); - Item result = get(key2); - if (result == null) { - pool.put12(CLASS, newUTF8(value)); - result = new Item(index++, key2); - put(result); - } - return result; - } - - /** - * Adds a class reference to the constant pool of the class being build. - * Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param value the internal name of the class. - * @return the index of a new or already existing class reference item. - */ - public int newClass(final String value) { - return newClassItem(value).index; - } - - /** - * Adds a method type reference to the constant pool of the class being - * build. Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param methodDesc method descriptor of the method type. - * @return a new or already existing method type reference item. - */ - Item newMethodTypeItem(final String methodDesc) { - key2.set(MTYPE, methodDesc, null, null); - Item result = get(key2); - if (result == null) { - pool.put12(MTYPE, newUTF8(methodDesc)); - result = new Item(index++, key2); - put(result); - } - return result; - } - - /** - * Adds a method type reference to the constant pool of the class being - * build. Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param methodDesc method descriptor of the method type. - * @return the index of a new or already existing method type reference - * item. - */ - public int newMethodType(final String methodDesc) { - return newMethodTypeItem(methodDesc).index; - } - - /** - * Adds a handle to the constant pool of the class being build. Does nothing - * if the constant pool already contains a similar item. This method is - * intended for {@link Attribute} sub classes, and is normally not needed by - * class generators or adapters. - * - * @param tag the kind of this handle. Must be {@link Opcodes#H_GETFIELD}, - * {@link Opcodes#H_GETSTATIC}, {@link Opcodes#H_PUTFIELD}, - * {@link Opcodes#H_PUTSTATIC}, {@link Opcodes#H_INVOKEVIRTUAL}, - * {@link Opcodes#H_INVOKESTATIC}, - * {@link Opcodes#H_INVOKESPECIAL}, - * {@link Opcodes#H_NEWINVOKESPECIAL} or - * {@link Opcodes#H_INVOKEINTERFACE}. - * @param owner the internal name of the field or method owner class. - * @param name the name of the field or method. - * @param desc the descriptor of the field or method. - * @return a new or an already existing method type reference item. - */ - Item newHandleItem(final int tag, final String owner, final String name, - final String desc) { - key4.set(HANDLE_BASE + tag, owner, name, desc); - Item result = get(key4); - if (result == null) { - if (tag <= Opcodes.H_PUTSTATIC) { - put112(HANDLE, tag, newField(owner, name, desc)); - } else { - put112(HANDLE, - tag, - newMethod(owner, name, desc, - tag == Opcodes.H_INVOKEINTERFACE)); - } - result = new Item(index++, key4); - put(result); - } - return result; - } - - /** - * Adds a handle to the constant pool of the class being build. Does nothing - * if the constant pool already contains a similar item. This method is - * intended for {@link Attribute} sub classes, and is normally not needed by - * class generators or adapters. - * - * @param tag the kind of this handle. Must be {@link Opcodes#H_GETFIELD}, - * {@link Opcodes#H_GETSTATIC}, {@link Opcodes#H_PUTFIELD}, - * {@link Opcodes#H_PUTSTATIC}, {@link Opcodes#H_INVOKEVIRTUAL}, - * {@link Opcodes#H_INVOKESTATIC}, - * {@link Opcodes#H_INVOKESPECIAL}, - * {@link Opcodes#H_NEWINVOKESPECIAL} or - * {@link Opcodes#H_INVOKEINTERFACE}. - * @param owner the internal name of the field or method owner class. - * @param name the name of the field or method. - * @param desc the descriptor of the field or method. - * @return the index of a new or already existing method type reference - * item. - */ - public int newHandle(final int tag, final String owner, final String name, - final String desc) { - return newHandleItem(tag, owner, name, desc).index; - } - - /** - * Adds an invokedynamic reference to the constant pool of the class being - * build. Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param name name of the invoked method. - * @param desc descriptor of the invoke method. - * @param bsm the bootstrap method. - * @param bsmArgs the bootstrap method constant arguments. - * @return a new or an already existing invokedynamic type reference item. - */ - Item newInvokeDynamicItem(final String name, final String desc, - final Handle bsm, final Object... bsmArgs) { - // cache for performance - ByteVector bootstrapMethods = this.bootstrapMethods; - if (bootstrapMethods == null) { - bootstrapMethods = this.bootstrapMethods = new ByteVector(); - } - - int position = bootstrapMethods.length; // record current position - - int hashCode = bsm.hashCode(); - bootstrapMethods.putShort(newHandle(bsm.tag, bsm.owner, bsm.name, - bsm.desc)); - - int argsLength = bsmArgs.length; - bootstrapMethods.putShort(argsLength); - - for (int i = 0; i < argsLength; i++) { - Object bsmArg = bsmArgs[i]; - hashCode ^= bsmArg.hashCode(); - bootstrapMethods.putShort(newConst(bsmArg)); - } - - byte[] data = bootstrapMethods.data; - int length = (1 + 1 + argsLength) << 1; // (bsm + argCount + arguments) - hashCode &= 0x7FFFFFFF; - Item result = items[hashCode % items.length]; - loop: - while (result != null) { - if (result.type != BSM || result.hashCode != hashCode) { - result = result.next; - continue; - } - - // because the data encode the size of the argument - // we don't need to test if these size are equals - int resultPosition = result.intVal; - for (int p = 0; p < length; p++) { - if (data[position + p] != data[resultPosition + p]) { - result = result.next; - continue loop; - } - } - break; - } - - int bootstrapMethodIndex; - if (result != null) { - bootstrapMethodIndex = result.index; - bootstrapMethods.length = position; // revert to old position - } else { - bootstrapMethodIndex = bootstrapMethodsCount++; - result = new Item(bootstrapMethodIndex); - result.set(position, hashCode); - put(result); - } - - // now, create the InvokeDynamic constant - key3.set(name, desc, bootstrapMethodIndex); - result = get(key3); - if (result == null) { - put122(INDY, bootstrapMethodIndex, newNameType(name, desc)); - result = new Item(index++, key3); - put(result); - } - return result; - } - - /** - * Adds an invokedynamic reference to the constant pool of the class being - * build. Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param name name of the invoked method. - * @param desc descriptor of the invoke method. - * @param bsm the bootstrap method. - * @param bsmArgs the bootstrap method constant arguments. - * @return the index of a new or already existing invokedynamic reference - * item. - */ - public int newInvokeDynamic(final String name, final String desc, - final Handle bsm, final Object... bsmArgs) { - return newInvokeDynamicItem(name, desc, bsm, bsmArgs).index; - } - - /** - * Adds a field reference to the constant pool of the class being build. - * Does nothing if the constant pool already contains a similar item. - * - * @param owner the internal name of the field's owner class. - * @param name the field's name. - * @param desc the field's descriptor. - * @return a new or already existing field reference item. - */ - Item newFieldItem(final String owner, final String name, final String desc) { - key3.set(FIELD, owner, name, desc); - Item result = get(key3); - if (result == null) { - put122(FIELD, newClass(owner), newNameType(name, desc)); - result = new Item(index++, key3); - put(result); - } - return result; - } - - /** - * Adds a field reference to the constant pool of the class being build. - * Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param owner the internal name of the field's owner class. - * @param name the field's name. - * @param desc the field's descriptor. - * @return the index of a new or already existing field reference item. - */ - public int newField(final String owner, final String name, final String desc) { - return newFieldItem(owner, name, desc).index; - } - - /** - * Adds a method reference to the constant pool of the class being build. - * Does nothing if the constant pool already contains a similar item. - * - * @param owner the internal name of the method's owner class. - * @param name the method's name. - * @param desc the method's descriptor. - * @param itf true if owner is an interface. - * @return a new or already existing method reference item. - */ - Item newMethodItem(final String owner, final String name, - final String desc, final boolean itf) { - int type = itf ? IMETH : METH; - key3.set(type, owner, name, desc); - Item result = get(key3); - if (result == null) { - put122(type, newClass(owner), newNameType(name, desc)); - result = new Item(index++, key3); - put(result); - } - return result; - } - - /** - * Adds a method reference to the constant pool of the class being build. - * Does nothing if the constant pool already contains a similar item. - * This method is intended for {@link Attribute} sub classes, and is - * normally not needed by class generators or adapters. - * - * @param owner the internal name of the method's owner class. - * @param name the method's name. - * @param desc the method's descriptor. - * @param itf true if owner is an interface. - * @return the index of a new or already existing method reference item. - */ - public int newMethod(final String owner, final String name, - final String desc, final boolean itf) { - return newMethodItem(owner, name, desc, itf).index; - } - - /** - * Adds an integer to the constant pool of the class being build. Does - * nothing if the constant pool already contains a similar item. - * - * @param value the int value. - * @return a new or already existing int item. - */ - Item newInteger(final int value) { - key.set(value); - Item result = get(key); - if (result == null) { - pool.putByte(INT).putInt(value); - result = new Item(index++, key); - put(result); - } - return result; - } - - /** - * Adds a float to the constant pool of the class being build. Does nothing - * if the constant pool already contains a similar item. - * - * @param value the float value. - * @return a new or already existing float item. - */ - Item newFloat(final float value) { - key.set(value); - Item result = get(key); - if (result == null) { - pool.putByte(FLOAT).putInt(key.intVal); - result = new Item(index++, key); - put(result); - } - return result; - } - - /** - * Adds a long to the constant pool of the class being build. Does nothing - * if the constant pool already contains a similar item. - * - * @param value the long value. - * @return a new or already existing long item. - */ - Item newLong(final long value) { - key.set(value); - Item result = get(key); - if (result == null) { - pool.putByte(LONG).putLong(value); - result = new Item(index, key); - index += 2; - put(result); - } - return result; - } - - /** - * Adds a double to the constant pool of the class being build. Does nothing - * if the constant pool already contains a similar item. - * - * @param value the double value. - * @return a new or already existing double item. - */ - Item newDouble(final double value) { - key.set(value); - Item result = get(key); - if (result == null) { - pool.putByte(DOUBLE).putLong(key.longVal); - result = new Item(index, key); - index += 2; - put(result); - } - return result; - } - - /** - * Adds a string to the constant pool of the class being build. Does nothing - * if the constant pool already contains a similar item. - * - * @param value the String value. - * @return a new or already existing string item. - */ - private Item newString(final String value) { - key2.set(STR, value, null, null); - Item result = get(key2); - if (result == null) { - pool.put12(STR, newUTF8(value)); - result = new Item(index++, key2); - put(result); - } - return result; - } - - /** - * Adds a name and type to the constant pool of the class being build. Does - * nothing if the constant pool already contains a similar item. This - * method is intended for {@link Attribute} sub classes, and is normally not - * needed by class generators or adapters. - * - * @param name a name. - * @param desc a type descriptor. - * @return the index of a new or already existing name and type item. - */ - public int newNameType(final String name, final String desc) { - return newNameTypeItem(name, desc).index; - } - - /** - * Adds a name and type to the constant pool of the class being build. Does - * nothing if the constant pool already contains a similar item. - * - * @param name a name. - * @param desc a type descriptor. - * @return a new or already existing name and type item. - */ - Item newNameTypeItem(final String name, final String desc) { - key2.set(NAME_TYPE, name, desc, null); - Item result = get(key2); - if (result == null) { - put122(NAME_TYPE, newUTF8(name), newUTF8(desc)); - result = new Item(index++, key2); - put(result); - } - return result; - } - - /** - * Adds the given internal name to {@link #typeTable} and returns its index. - * Does nothing if the type table already contains this internal name. - * - * @param type the internal name to be added to the type table. - * @return the index of this internal name in the type table. - */ - int addType(final String type) { - key.set(TYPE_NORMAL, type, null, null); - Item result = get(key); - if (result == null) { - result = addType(key); - } - return result.index; - } - - /** - * Adds the given "uninitialized" type to {@link #typeTable} and returns its - * index. This method is used for UNINITIALIZED types, made of an internal - * name and a bytecode offset. - * - * @param type the internal name to be added to the type table. - * @param offset the bytecode offset of the NEW instruction that created this - * UNINITIALIZED type value. - * @return the index of this internal name in the type table. - */ - int addUninitializedType(final String type, final int offset) { - key.type = TYPE_UNINIT; - key.intVal = offset; - key.strVal1 = type; - key.hashCode = 0x7FFFFFFF & (TYPE_UNINIT + type.hashCode() + offset); - Item result = get(key); - if (result == null) { - result = addType(key); - } - return result.index; - } - - /** - * Adds the given Item to {@link #typeTable}. - * - * @param item the value to be added to the type table. - * @return the added Item, which a new Item instance with the same value as - * the given Item. - */ - private Item addType(final Item item) { - ++typeCount; - Item result = new Item(typeCount, key); - put(result); - if (typeTable == null) { - typeTable = new Item[16]; - } - if (typeCount == typeTable.length) { - Item[] newTable = new Item[2 * typeTable.length]; - System.arraycopy(typeTable, 0, newTable, 0, typeTable.length); - typeTable = newTable; - } - typeTable[typeCount] = result; - return result; - } - - /** - * Returns the index of the common super type of the two given types. This - * method calls {@link #getCommonSuperClass} and caches the result in the - * {@link #items} hash table to speedup future calls with the same - * parameters. - * - * @param type1 index of an internal name in {@link #typeTable}. - * @param type2 index of an internal name in {@link #typeTable}. - * @return the index of the common super type of the two given types. - */ - int getMergedType(final int type1, final int type2) { - key2.type = TYPE_MERGED; - key2.longVal = type1 | (((long) type2) << 32); - key2.hashCode = 0x7FFFFFFF & (TYPE_MERGED + type1 + type2); - Item result = get(key2); - if (result == null) { - String t = typeTable[type1].strVal1; - String u = typeTable[type2].strVal1; - key2.intVal = addType(getCommonSuperClass(t, u)); - result = new Item((short) 0, key2); - put(result); - } - return result.intVal; - } - - /** - * Returns the common super type of the two given types. The default - * implementation of this method loads the two given classes and uses - * the java.lang.Class methods to find the common super class. It can be - * overridden to compute this common super type in other ways, in particular - * without actually loading any class, or to take into account the class - * that is currently being generated by this ClassWriter, which can of - * course not be loaded since it is under construction. - * - * @param type1 the internal name of a class. - * @param type2 the internal name of another class. - * @return the internal name of the common super class of the two given - * classes. - */ - protected String getCommonSuperClass(final String type1, final String type2) { - Class c, d; - ClassLoader classLoader = getClass().getClassLoader(); - try { - c = Class.forName(type1.replace('/', '.'), false, classLoader); - d = Class.forName(type2.replace('/', '.'), false, classLoader); - } catch (Exception e) { - throw new RuntimeException(e.toString()); - } - if (c.isAssignableFrom(d)) { - return type1; - } - if (d.isAssignableFrom(c)) { - return type2; - } - if (c.isInterface() || d.isInterface()) { - return "java/lang/Object"; - } else { - do { - c = c.getSuperclass(); - } while (!c.isAssignableFrom(d)); - return c.getName().replace('.', '/'); - } - } - - /** - * Returns the constant pool's hash table item which is equal to the given - * item. - * - * @param key a constant pool item. - * @return the constant pool's hash table item which is equal to the given - * item, or null if there is no such item. - */ - private Item get(final Item key) { - Item i = items[key.hashCode % items.length]; - while (i != null && (i.type != key.type || !key.isEqualTo(i))) { - i = i.next; - } - return i; - } - - /** - * Puts the given item in the constant pool's hash table. The hash table - * must not already contains this item. - * - * @param i the item to be added to the constant pool's hash table. - */ - private void put(final Item i) { - if (index + typeCount > threshold) { - int ll = items.length; - int nl = ll * 2 + 1; - Item[] newItems = new Item[nl]; - for (int l = ll - 1; l >= 0; --l) { - Item j = items[l]; - while (j != null) { - int index = j.hashCode % newItems.length; - Item k = j.next; - j.next = newItems[index]; - newItems[index] = j; - j = k; - } - } - items = newItems; - threshold = (int) (nl * 0.75); - } - int index = i.hashCode % items.length; - i.next = items[index]; - items[index] = i; - } - - /** - * Puts one byte and two shorts into the constant pool. - * - * @param b a byte. - * @param s1 a short. - * @param s2 another short. - */ - private void put122(final int b, final int s1, final int s2) { - pool.put12(b, s1).putShort(s2); - } - - /** - * Puts two bytes and one short into the constant pool. - * - * @param b1 a byte. - * @param b2 another byte. - * @param s a short. - */ - private void put112(final int b1, final int b2, final int s) { - pool.put11(b1, b2).putShort(s); - } -} diff --git a/src/org/objectweb/asm/Context.java b/src/org/objectweb/asm/Context.java deleted file mode 100644 index 5e61d4288..000000000 --- a/src/org/objectweb/asm/Context.java +++ /dev/null @@ -1,145 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -package org.objectweb.asm; - -/** - * Information about a class being parsed in a {@link ClassReader}. - * - * @author Eric Bruneton - */ -class Context { - - /** - * Prototypes of the attributes that must be parsed for this class. - */ - Attribute[] attrs; - - /** - * The {@link ClassReader} option flags for the parsing of this class. - */ - int flags; - - /** - * The buffer used to read strings. - */ - char[] buffer; - - /** - * The start index of each bootstrap method. - */ - int[] bootstrapMethods; - - /** - * The access flags of the method currently being parsed. - */ - int access; - - /** - * The name of the method currently being parsed. - */ - String name; - - /** - * The descriptor of the method currently being parsed. - */ - String desc; - - /** - * The label objects, indexed by bytecode offset, of the method currently - * being parsed (only bytecode offsets for which a label is needed have a - * non null associated Label object). - */ - Label[] labels; - - /** - * The target of the type annotation currently being parsed. - */ - int typeRef; - - /** - * The path of the type annotation currently being parsed. - */ - TypePath typePath; - - /** - * The offset of the latest stack map frame that has been parsed. - */ - int offset; - - /** - * The labels corresponding to the start of the local variable ranges in the - * local variable type annotation currently being parsed. - */ - Label[] start; - - /** - * The labels corresponding to the end of the local variable ranges in the - * local variable type annotation currently being parsed. - */ - Label[] end; - - /** - * The local variable indices for each local variable range in the local - * variable type annotation currently being parsed. - */ - int[] index; - - /** - * The encoding of the latest stack map frame that has been parsed. - */ - int mode; - - /** - * The number of locals in the latest stack map frame that has been parsed. - */ - int localCount; - - /** - * The number locals in the latest stack map frame that has been parsed, - * minus the number of locals in the previous frame. - */ - int localDiff; - - /** - * The local values of the latest stack map frame that has been parsed. - */ - Object[] local; - - /** - * The stack size of the latest stack map frame that has been parsed. - */ - int stackCount; - - /** - * The stack values of the latest stack map frame that has been parsed. - */ - Object[] stack; -} \ No newline at end of file diff --git a/src/org/objectweb/asm/Edge.java b/src/org/objectweb/asm/Edge.java deleted file mode 100644 index 2d341fe67..000000000 --- a/src/org/objectweb/asm/Edge.java +++ /dev/null @@ -1,75 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * An edge in the control flow graph of a method body. See {@link Label Label}. - * - * @author Eric Bruneton - */ -class Edge { - - /** - * Denotes a normal control flow graph edge. - */ - static final int NORMAL = 0; - - /** - * Denotes a control flow graph edge corresponding to an exception handler. - * More precisely any {@link Edge} whose {@link #info} is strictly positive - * corresponds to an exception handler. The actual value of {@link #info} is - * the index, in the {@link ClassWriter} type table, of the exception that - * is catched. - */ - static final int EXCEPTION = 0x7FFFFFFF; - - /** - * Information about this control flow graph edge. If - * {@link ClassWriter#COMPUTE_MAXS} is used this field is the (relative) - * stack size in the basic block from which this edge originates. This size - * is equal to the stack size at the "jump" instruction to which this edge - * corresponds, relatively to the stack size at the beginning of the - * originating basic block. If {@link ClassWriter#COMPUTE_FRAMES} is used, - * this field is the kind of this control flow graph edge (i.e. NORMAL or - * EXCEPTION). - */ - int info; - - /** - * The successor block of the basic block from which this edge originates. - */ - Label successor; - - /** - * The next edge in the list of successors of the originating basic block. - * See {@link Label#successors successors}. - */ - Edge next; -} diff --git a/src/org/objectweb/asm/FieldVisitor.java b/src/org/objectweb/asm/FieldVisitor.java deleted file mode 100644 index 59dba8f84..000000000 --- a/src/org/objectweb/asm/FieldVisitor.java +++ /dev/null @@ -1,140 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A visitor to visit a Java field. The methods of this class must be called in - * the following order: ( visitAnnotation | - * visitTypeAnnotation | visitAttribute )* visitEnd. - * - * @author Eric Bruneton - */ -public abstract class FieldVisitor { - - /** - * The ASM API version implemented by this visitor. The value of this field - * must be one of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - protected final int api; - - /** - * The field visitor to which this visitor must delegate method calls. May - * be null. - */ - protected FieldVisitor fv; - - /** - * Constructs a new {@link FieldVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - public FieldVisitor(final int api) { - this(api, null); - } - - /** - * Constructs a new {@link FieldVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - * @param fv the field visitor to which this visitor must delegate method - * calls. May be null. - */ - public FieldVisitor(final int api, final FieldVisitor fv) { - if (api != Opcodes.ASM4 && api != Opcodes.ASM5) { - throw new IllegalArgumentException(); - } - this.api = api; - this.fv = fv; - } - - /** - * Visits an annotation of the field. - * - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitAnnotation(String desc, boolean visible) { - if (fv != null) { - return fv.visitAnnotation(desc, visible); - } - return null; - } - - /** - * Visits an annotation on the type of the field. - * - * @param typeRef a reference to the annotated type. The sort of this type - * reference must be {@link TypeReference#FIELD FIELD}. See - * {@link TypeReference}. - * @param typePath the path to the annotated type argument, wildcard bound, array - * element type, or static inner type within 'typeRef'. May be - * null if the annotation targets 'typeRef' as a whole. - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitTypeAnnotation(int typeRef, - TypePath typePath, String desc, boolean visible) { - if (api < Opcodes.ASM5) { - throw new RuntimeException(); - } - if (fv != null) { - return fv.visitTypeAnnotation(typeRef, typePath, desc, visible); - } - return null; - } - - /** - * Visits a non standard attribute of the field. - * - * @param attr an attribute. - */ - public void visitAttribute(Attribute attr) { - if (fv != null) { - fv.visitAttribute(attr); - } - } - - /** - * Visits the end of the field. This method, which is the last one to be - * called, is used to inform the visitor that all the annotations and - * attributes of the field have been visited. - */ - public void visitEnd() { - if (fv != null) { - fv.visitEnd(); - } - } -} diff --git a/src/org/objectweb/asm/FieldWriter.java b/src/org/objectweb/asm/FieldWriter.java deleted file mode 100644 index b3f40b0c0..000000000 --- a/src/org/objectweb/asm/FieldWriter.java +++ /dev/null @@ -1,322 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * An {@link FieldVisitor} that generates Java fields in bytecode form. - * - * @author Eric Bruneton - */ -final class FieldWriter extends FieldVisitor { - - /** - * The class writer to which this field must be added. - */ - private final ClassWriter cw; - - /** - * Access flags of this field. - */ - private final int access; - - /** - * The index of the constant pool item that contains the name of this - * method. - */ - private final int name; - - /** - * The index of the constant pool item that contains the descriptor of this - * field. - */ - private final int desc; - - /** - * The index of the constant pool item that contains the signature of this - * field. - */ - private int signature; - - /** - * The index of the constant pool item that contains the constant value of - * this field. - */ - private int value; - - /** - * The runtime visible annotations of this field. May be null. - */ - private AnnotationWriter anns; - - /** - * The runtime invisible annotations of this field. May be null. - */ - private AnnotationWriter ianns; - - /** - * The runtime visible type annotations of this field. May be null. - */ - private AnnotationWriter tanns; - - /** - * The runtime invisible type annotations of this field. May be - * null. - */ - private AnnotationWriter itanns; - - /** - * The non standard attributes of this field. May be null. - */ - private Attribute attrs; - - // ------------------------------------------------------------------------ - // Constructor - // ------------------------------------------------------------------------ - - /** - * Constructs a new {@link FieldWriter}. - * - * @param cw the class writer to which this field must be added. - * @param access the field's access flags (see {@link Opcodes}). - * @param name the field's name. - * @param desc the field's descriptor (see {@link Type}). - * @param signature the field's signature. May be null. - * @param value the field's constant value. May be null. - */ - FieldWriter(final ClassWriter cw, final int access, final String name, - final String desc, final String signature, final Object value) { - super(Opcodes.ASM5); - if (cw.firstField == null) { - cw.firstField = this; - } else { - cw.lastField.fv = this; - } - cw.lastField = this; - this.cw = cw; - this.access = access; - this.name = cw.newUTF8(name); - this.desc = cw.newUTF8(desc); - if (ClassReader.SIGNATURES && signature != null) { - this.signature = cw.newUTF8(signature); - } - if (value != null) { - this.value = cw.newConstItem(value).index; - } - } - - // ------------------------------------------------------------------------ - // Implementation of the FieldVisitor abstract class - // ------------------------------------------------------------------------ - - @Override - public AnnotationVisitor visitAnnotation(final String desc, - final boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, 2); - if (visible) { - aw.next = anns; - anns = aw; - } else { - aw.next = ianns; - ianns = aw; - } - return aw; - } - - @Override - public AnnotationVisitor visitTypeAnnotation(final int typeRef, - final TypePath typePath, final String desc, final boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write target_type and target_info - AnnotationWriter.putTarget(typeRef, typePath, bv); - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, - bv.length - 2); - if (visible) { - aw.next = tanns; - tanns = aw; - } else { - aw.next = itanns; - itanns = aw; - } - return aw; - } - - @Override - public void visitAttribute(final Attribute attr) { - attr.next = attrs; - attrs = attr; - } - - @Override - public void visitEnd() { - } - - // ------------------------------------------------------------------------ - // Utility methods - // ------------------------------------------------------------------------ - - /** - * Returns the size of this field. - * - * @return the size of this field. - */ - int getSize() { - int size = 8; - if (value != 0) { - cw.newUTF8("ConstantValue"); - size += 8; - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((cw.version & 0xFFFF) < Opcodes.V1_5 - || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0) { - cw.newUTF8("Synthetic"); - size += 6; - } - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - cw.newUTF8("Deprecated"); - size += 6; - } - if (ClassReader.SIGNATURES && signature != 0) { - cw.newUTF8("Signature"); - size += 8; - } - if (ClassReader.ANNOTATIONS && anns != null) { - cw.newUTF8("RuntimeVisibleAnnotations"); - size += 8 + anns.getSize(); - } - if (ClassReader.ANNOTATIONS && ianns != null) { - cw.newUTF8("RuntimeInvisibleAnnotations"); - size += 8 + ianns.getSize(); - } - if (ClassReader.ANNOTATIONS && tanns != null) { - cw.newUTF8("RuntimeVisibleTypeAnnotations"); - size += 8 + tanns.getSize(); - } - if (ClassReader.ANNOTATIONS && itanns != null) { - cw.newUTF8("RuntimeInvisibleTypeAnnotations"); - size += 8 + itanns.getSize(); - } - if (attrs != null) { - size += attrs.getSize(cw, null, 0, -1, -1); - } - return size; - } - - /** - * Puts the content of this field into the given byte vector. - * - * @param out where the content of this field must be put. - */ - void put(final ByteVector out) { - final int FACTOR = ClassWriter.TO_ACC_SYNTHETIC; - int mask = Opcodes.ACC_DEPRECATED | ClassWriter.ACC_SYNTHETIC_ATTRIBUTE - | ((access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) / FACTOR); - out.putShort(access & ~mask).putShort(name).putShort(desc); - int attributeCount = 0; - if (value != 0) { - ++attributeCount; - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((cw.version & 0xFFFF) < Opcodes.V1_5 - || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0) { - ++attributeCount; - } - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - ++attributeCount; - } - if (ClassReader.SIGNATURES && signature != 0) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && anns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && ianns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && tanns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && itanns != null) { - ++attributeCount; - } - if (attrs != null) { - attributeCount += attrs.getCount(); - } - out.putShort(attributeCount); - if (value != 0) { - out.putShort(cw.newUTF8("ConstantValue")); - out.putInt(2).putShort(value); - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((cw.version & 0xFFFF) < Opcodes.V1_5 - || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0) { - out.putShort(cw.newUTF8("Synthetic")).putInt(0); - } - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - out.putShort(cw.newUTF8("Deprecated")).putInt(0); - } - if (ClassReader.SIGNATURES && signature != 0) { - out.putShort(cw.newUTF8("Signature")); - out.putInt(2).putShort(signature); - } - if (ClassReader.ANNOTATIONS && anns != null) { - out.putShort(cw.newUTF8("RuntimeVisibleAnnotations")); - anns.put(out); - } - if (ClassReader.ANNOTATIONS && ianns != null) { - out.putShort(cw.newUTF8("RuntimeInvisibleAnnotations")); - ianns.put(out); - } - if (ClassReader.ANNOTATIONS && tanns != null) { - out.putShort(cw.newUTF8("RuntimeVisibleTypeAnnotations")); - tanns.put(out); - } - if (ClassReader.ANNOTATIONS && itanns != null) { - out.putShort(cw.newUTF8("RuntimeInvisibleTypeAnnotations")); - itanns.put(out); - } - if (attrs != null) { - attrs.put(cw, null, 0, -1, -1, out); - } - } -} diff --git a/src/org/objectweb/asm/Frame.java b/src/org/objectweb/asm/Frame.java deleted file mode 100644 index a565639da..000000000 --- a/src/org/objectweb/asm/Frame.java +++ /dev/null @@ -1,1434 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * Information about the input and output stack map frames of a basic block. - * - * @author Eric Bruneton - */ -final class Frame { - - /* - * Frames are computed in a two steps process: during the visit of each - * instruction, the state of the frame at the end of current basic block is - * updated by simulating the action of the instruction on the previous state - * of this so called "output frame". In visitMaxs, a fix point algorithm is - * used to compute the "input frame" of each basic block, i.e. the stack map - * frame at the beginning of the basic block, starting from the input frame - * of the first basic block (which is computed from the method descriptor), - * and by using the previously computed output frames to compute the input - * state of the other blocks. - * - * All output and input frames are stored as arrays of integers. Reference - * and array types are represented by an index into a type table (which is - * not the same as the constant pool of the class, in order to avoid adding - * unnecessary constants in the pool - not all computed frames will end up - * being stored in the stack map table). This allows very fast type - * comparisons. - * - * Output stack map frames are computed relatively to the input frame of the - * basic block, which is not yet known when output frames are computed. It - * is therefore necessary to be able to represent abstract types such as - * "the type at position x in the input frame locals" or "the type at - * position x from the top of the input frame stack" or even "the type at - * position x in the input frame, with y more (or less) array dimensions". - * This explains the rather complicated type format used in output frames. - * - * This format is the following: DIM KIND VALUE (4, 4 and 24 bits). DIM is a - * signed number of array dimensions (from -8 to 7). KIND is either BASE, - * LOCAL or STACK. BASE is used for types that are not relative to the input - * frame. LOCAL is used for types that are relative to the input local - * variable types. STACK is used for types that are relative to the input - * stack types. VALUE depends on KIND. For LOCAL types, it is an index in - * the input local variable types. For STACK types, it is a position - * relatively to the top of input frame stack. For BASE types, it is either - * one of the constants defined below, or for OBJECT and UNINITIALIZED - * types, a tag and an index in the type table. - * - * Output frames can contain types of any kind and with a positive or - * negative dimension (and even unassigned types, represented by 0 - which - * does not correspond to any valid type value). Input frames can only - * contain BASE types of positive or null dimension. In all cases the type - * table contains only internal type names (array type descriptors are - * forbidden - dimensions must be represented through the DIM field). - * - * The LONG and DOUBLE types are always represented by using two slots (LONG - * + TOP or DOUBLE + TOP), for local variable types as well as in the - * operand stack. This is necessary to be able to simulate DUPx_y - * instructions, whose effect would be dependent on the actual type values - * if types were always represented by a single slot in the stack (and this - * is not possible, since actual type values are not always known - cf LOCAL - * and STACK type kinds). - */ - - /** - * Mask to get the dimension of a frame type. This dimension is a signed - * integer between -8 and 7. - */ - static final int DIM = 0xF0000000; - - /** - * Constant to be added to a type to get a type with one more dimension. - */ - static final int ARRAY_OF = 0x10000000; - - /** - * Constant to be added to a type to get a type with one less dimension. - */ - static final int ELEMENT_OF = 0xF0000000; - - /** - * Mask to get the kind of a frame type. - * - * @see #BASE - * @see #LOCAL - * @see #STACK - */ - static final int KIND = 0xF000000; - - /** - * Flag used for LOCAL and STACK types. Indicates that if this type happens - * to be a long or double type (during the computations of input frames), - * then it must be set to TOP because the second word of this value has been - * reused to store other data in the basic block. Hence the first word no - * longer stores a valid long or double value. - */ - static final int TOP_IF_LONG_OR_DOUBLE = 0x800000; - - /** - * Mask to get the value of a frame type. - */ - static final int VALUE = 0x7FFFFF; - - /** - * Mask to get the kind of base types. - */ - static final int BASE_KIND = 0xFF00000; - - /** - * Mask to get the value of base types. - */ - static final int BASE_VALUE = 0xFFFFF; - - /** - * Kind of the types that are not relative to an input stack map frame. - */ - static final int BASE = 0x1000000; - - /** - * Base kind of the base reference types. The BASE_VALUE of such types is an - * index into the type table. - */ - static final int OBJECT = BASE | 0x700000; - - /** - * Base kind of the uninitialized base types. The BASE_VALUE of such types - * in an index into the type table (the Item at that index contains both an - * instruction offset and an internal class name). - */ - static final int UNINITIALIZED = BASE | 0x800000; - - /** - * Kind of the types that are relative to the local variable types of an - * input stack map frame. The value of such types is a local variable index. - */ - private static final int LOCAL = 0x2000000; - - /** - * Kind of the the types that are relative to the stack of an input stack - * map frame. The value of such types is a position relatively to the top of - * this stack. - */ - private static final int STACK = 0x3000000; - - /** - * The TOP type. This is a BASE type. - */ - static final int TOP = BASE | 0; - - /** - * The BOOLEAN type. This is a BASE type mainly used for array types. - */ - static final int BOOLEAN = BASE | 9; - - /** - * The BYTE type. This is a BASE type mainly used for array types. - */ - static final int BYTE = BASE | 10; - - /** - * The CHAR type. This is a BASE type mainly used for array types. - */ - static final int CHAR = BASE | 11; - - /** - * The SHORT type. This is a BASE type mainly used for array types. - */ - static final int SHORT = BASE | 12; - - /** - * The INTEGER type. This is a BASE type. - */ - static final int INTEGER = BASE | 1; - - /** - * The FLOAT type. This is a BASE type. - */ - static final int FLOAT = BASE | 2; - - /** - * The DOUBLE type. This is a BASE type. - */ - static final int DOUBLE = BASE | 3; - - /** - * The LONG type. This is a BASE type. - */ - static final int LONG = BASE | 4; - - /** - * The NULL type. This is a BASE type. - */ - static final int NULL = BASE | 5; - - /** - * The UNINITIALIZED_THIS type. This is a BASE type. - */ - static final int UNINITIALIZED_THIS = BASE | 6; - - /** - * The stack size variation corresponding to each JVM instruction. This - * stack variation is equal to the size of the values produced by an - * instruction, minus the size of the values consumed by this instruction. - */ - static final int[] SIZE; - - /** - * Computes the stack size variation corresponding to each JVM instruction. - */ - static { - int i; - int[] b = new int[202]; - String s = "EFFFFFFFFGGFFFGGFFFEEFGFGFEEEEEEEEEEEEEEEEEEEEDEDEDDDDD" - + "CDCDEEEEEEEEEEEEEEEEEEEEBABABBBBDCFFFGGGEDCDCDCDCDCDCDCDCD" - + "CDCEEEEDDDDDDDCDCDCEFEFDDEEFFDEDEEEBDDBBDDDDDDCCCCCCCCEFED" - + "DDCDCDEEEEEEEEEEFEEEEEEDDEEDDEE"; - for (i = 0; i < b.length; ++i) { - b[i] = s.charAt(i) - 'E'; - } - SIZE = b; - - // code to generate the above string - // - // int NA = 0; // not applicable (unused opcode or variable size opcode) - // - // b = new int[] { - // 0, //NOP, // visitInsn - // 1, //ACONST_NULL, // - - // 1, //ICONST_M1, // - - // 1, //ICONST_0, // - - // 1, //ICONST_1, // - - // 1, //ICONST_2, // - - // 1, //ICONST_3, // - - // 1, //ICONST_4, // - - // 1, //ICONST_5, // - - // 2, //LCONST_0, // - - // 2, //LCONST_1, // - - // 1, //FCONST_0, // - - // 1, //FCONST_1, // - - // 1, //FCONST_2, // - - // 2, //DCONST_0, // - - // 2, //DCONST_1, // - - // 1, //BIPUSH, // visitIntInsn - // 1, //SIPUSH, // - - // 1, //LDC, // visitLdcInsn - // NA, //LDC_W, // - - // NA, //LDC2_W, // - - // 1, //ILOAD, // visitVarInsn - // 2, //LLOAD, // - - // 1, //FLOAD, // - - // 2, //DLOAD, // - - // 1, //ALOAD, // - - // NA, //ILOAD_0, // - - // NA, //ILOAD_1, // - - // NA, //ILOAD_2, // - - // NA, //ILOAD_3, // - - // NA, //LLOAD_0, // - - // NA, //LLOAD_1, // - - // NA, //LLOAD_2, // - - // NA, //LLOAD_3, // - - // NA, //FLOAD_0, // - - // NA, //FLOAD_1, // - - // NA, //FLOAD_2, // - - // NA, //FLOAD_3, // - - // NA, //DLOAD_0, // - - // NA, //DLOAD_1, // - - // NA, //DLOAD_2, // - - // NA, //DLOAD_3, // - - // NA, //ALOAD_0, // - - // NA, //ALOAD_1, // - - // NA, //ALOAD_2, // - - // NA, //ALOAD_3, // - - // -1, //IALOAD, // visitInsn - // 0, //LALOAD, // - - // -1, //FALOAD, // - - // 0, //DALOAD, // - - // -1, //AALOAD, // - - // -1, //BALOAD, // - - // -1, //CALOAD, // - - // -1, //SALOAD, // - - // -1, //ISTORE, // visitVarInsn - // -2, //LSTORE, // - - // -1, //FSTORE, // - - // -2, //DSTORE, // - - // -1, //ASTORE, // - - // NA, //ISTORE_0, // - - // NA, //ISTORE_1, // - - // NA, //ISTORE_2, // - - // NA, //ISTORE_3, // - - // NA, //LSTORE_0, // - - // NA, //LSTORE_1, // - - // NA, //LSTORE_2, // - - // NA, //LSTORE_3, // - - // NA, //FSTORE_0, // - - // NA, //FSTORE_1, // - - // NA, //FSTORE_2, // - - // NA, //FSTORE_3, // - - // NA, //DSTORE_0, // - - // NA, //DSTORE_1, // - - // NA, //DSTORE_2, // - - // NA, //DSTORE_3, // - - // NA, //ASTORE_0, // - - // NA, //ASTORE_1, // - - // NA, //ASTORE_2, // - - // NA, //ASTORE_3, // - - // -3, //IASTORE, // visitInsn - // -4, //LASTORE, // - - // -3, //FASTORE, // - - // -4, //DASTORE, // - - // -3, //AASTORE, // - - // -3, //BASTORE, // - - // -3, //CASTORE, // - - // -3, //SASTORE, // - - // -1, //POP, // - - // -2, //POP2, // - - // 1, //DUP, // - - // 1, //DUP_X1, // - - // 1, //DUP_X2, // - - // 2, //DUP2, // - - // 2, //DUP2_X1, // - - // 2, //DUP2_X2, // - - // 0, //SWAP, // - - // -1, //IADD, // - - // -2, //LADD, // - - // -1, //FADD, // - - // -2, //DADD, // - - // -1, //ISUB, // - - // -2, //LSUB, // - - // -1, //FSUB, // - - // -2, //DSUB, // - - // -1, //IMUL, // - - // -2, //LMUL, // - - // -1, //FMUL, // - - // -2, //DMUL, // - - // -1, //IDIV, // - - // -2, //LDIV, // - - // -1, //FDIV, // - - // -2, //DDIV, // - - // -1, //IREM, // - - // -2, //LREM, // - - // -1, //FREM, // - - // -2, //DREM, // - - // 0, //INEG, // - - // 0, //LNEG, // - - // 0, //FNEG, // - - // 0, //DNEG, // - - // -1, //ISHL, // - - // -1, //LSHL, // - - // -1, //ISHR, // - - // -1, //LSHR, // - - // -1, //IUSHR, // - - // -1, //LUSHR, // - - // -1, //IAND, // - - // -2, //LAND, // - - // -1, //IOR, // - - // -2, //LOR, // - - // -1, //IXOR, // - - // -2, //LXOR, // - - // 0, //IINC, // visitIincInsn - // 1, //I2L, // visitInsn - // 0, //I2F, // - - // 1, //I2D, // - - // -1, //L2I, // - - // -1, //L2F, // - - // 0, //L2D, // - - // 0, //F2I, // - - // 1, //F2L, // - - // 1, //F2D, // - - // -1, //D2I, // - - // 0, //D2L, // - - // -1, //D2F, // - - // 0, //I2B, // - - // 0, //I2C, // - - // 0, //I2S, // - - // -3, //LCMP, // - - // -1, //FCMPL, // - - // -1, //FCMPG, // - - // -3, //DCMPL, // - - // -3, //DCMPG, // - - // -1, //IFEQ, // visitJumpInsn - // -1, //IFNE, // - - // -1, //IFLT, // - - // -1, //IFGE, // - - // -1, //IFGT, // - - // -1, //IFLE, // - - // -2, //IF_ICMPEQ, // - - // -2, //IF_ICMPNE, // - - // -2, //IF_ICMPLT, // - - // -2, //IF_ICMPGE, // - - // -2, //IF_ICMPGT, // - - // -2, //IF_ICMPLE, // - - // -2, //IF_ACMPEQ, // - - // -2, //IF_ACMPNE, // - - // 0, //GOTO, // - - // 1, //JSR, // - - // 0, //RET, // visitVarInsn - // -1, //TABLESWITCH, // visiTableSwitchInsn - // -1, //LOOKUPSWITCH, // visitLookupSwitch - // -1, //IRETURN, // visitInsn - // -2, //LRETURN, // - - // -1, //FRETURN, // - - // -2, //DRETURN, // - - // -1, //ARETURN, // - - // 0, //RETURN, // - - // NA, //GETSTATIC, // visitFieldInsn - // NA, //PUTSTATIC, // - - // NA, //GETFIELD, // - - // NA, //PUTFIELD, // - - // NA, //INVOKEVIRTUAL, // visitMethodInsn - // NA, //INVOKESPECIAL, // - - // NA, //INVOKESTATIC, // - - // NA, //INVOKEINTERFACE, // - - // NA, //INVOKEDYNAMIC, // visitInvokeDynamicInsn - // 1, //NEW, // visitTypeInsn - // 0, //NEWARRAY, // visitIntInsn - // 0, //ANEWARRAY, // visitTypeInsn - // 0, //ARRAYLENGTH, // visitInsn - // NA, //ATHROW, // - - // 0, //CHECKCAST, // visitTypeInsn - // 0, //INSTANCEOF, // - - // -1, //MONITORENTER, // visitInsn - // -1, //MONITOREXIT, // - - // NA, //WIDE, // NOT VISITED - // NA, //MULTIANEWARRAY, // visitMultiANewArrayInsn - // -1, //IFNULL, // visitJumpInsn - // -1, //IFNONNULL, // - - // NA, //GOTO_W, // - - // NA, //JSR_W, // - - // }; - // for (i = 0; i < b.length; ++i) { - // System.err.print((char)('E' + b[i])); - // } - // System.err.println(); - } - - /** - * The label (i.e. basic block) to which these input and output stack map - * frames correspond. - */ - Label owner; - - /** - * The input stack map frame locals. - */ - int[] inputLocals; - - /** - * The input stack map frame stack. - */ - int[] inputStack; - - /** - * The output stack map frame locals. - */ - private int[] outputLocals; - - /** - * The output stack map frame stack. - */ - private int[] outputStack; - - /** - * Relative size of the output stack. The exact semantics of this field - * depends on the algorithm that is used. - *

- * When only the maximum stack size is computed, this field is the size of - * the output stack relatively to the top of the input stack. - *

- * When the stack map frames are completely computed, this field is the - * actual number of types in {@link #outputStack}. - */ - private int outputStackTop; - - /** - * Number of types that are initialized in the basic block. - * - * @see #initializations - */ - private int initializationCount; - - /** - * The types that are initialized in the basic block. A constructor - * invocation on an UNINITIALIZED or UNINITIALIZED_THIS type must replace - * every occurence of this type in the local variables and in the - * operand stack. This cannot be done during the first phase of the - * algorithm since, during this phase, the local variables and the operand - * stack are not completely computed. It is therefore necessary to store the - * types on which constructors are invoked in the basic block, in order to - * do this replacement during the second phase of the algorithm, where the - * frames are fully computed. Note that this array can contain types that - * are relative to input locals or to the input stack (see below for the - * description of the algorithm). - */ - private int[] initializations; - - /** - * Returns the output frame local variable type at the given index. - * - * @param local the index of the local that must be returned. - * @return the output frame local variable type at the given index. - */ - private int get(final int local) { - if (outputLocals == null || local >= outputLocals.length) { - // this local has never been assigned in this basic block, - // so it is still equal to its value in the input frame - return LOCAL | local; - } else { - int type = outputLocals[local]; - if (type == 0) { - // this local has never been assigned in this basic block, - // so it is still equal to its value in the input frame - type = outputLocals[local] = LOCAL | local; - } - return type; - } - } - - /** - * Sets the output frame local variable type at the given index. - * - * @param local the index of the local that must be set. - * @param type the value of the local that must be set. - */ - private void set(final int local, final int type) { - // creates and/or resizes the output local variables array if necessary - if (outputLocals == null) { - outputLocals = new int[10]; - } - int n = outputLocals.length; - if (local >= n) { - int[] t = new int[Math.max(local + 1, 2 * n)]; - System.arraycopy(outputLocals, 0, t, 0, n); - outputLocals = t; - } - // sets the local variable - outputLocals[local] = type; - } - - /** - * Pushes a new type onto the output frame stack. - * - * @param type the type that must be pushed. - */ - private void push(final int type) { - // creates and/or resizes the output stack array if necessary - if (outputStack == null) { - outputStack = new int[10]; - } - int n = outputStack.length; - if (outputStackTop >= n) { - int[] t = new int[Math.max(outputStackTop + 1, 2 * n)]; - System.arraycopy(outputStack, 0, t, 0, n); - outputStack = t; - } - // pushes the type on the output stack - outputStack[outputStackTop++] = type; - // updates the maximun height reached by the output stack, if needed - int top = owner.inputStackTop + outputStackTop; - if (top > owner.outputStackMax) { - owner.outputStackMax = top; - } - } - - /** - * Pushes a new type onto the output frame stack. - * - * @param cw the ClassWriter to which this label belongs. - * @param desc the descriptor of the type to be pushed. Can also be a method - * descriptor (in this case this method pushes its return type - * onto the output frame stack). - */ - private void push(final ClassWriter cw, final String desc) { - int type = type(cw, desc); - if (type != 0) { - push(type); - if (type == LONG || type == DOUBLE) { - push(TOP); - } - } - } - - /** - * Returns the int encoding of the given type. - * - * @param cw the ClassWriter to which this label belongs. - * @param desc a type descriptor. - * @return the int encoding of the given type. - */ - private static int type(final ClassWriter cw, final String desc) { - String t; - int index = desc.charAt(0) == '(' ? desc.indexOf(')') + 1 : 0; - switch (desc.charAt(index)) { - case 'V': - return 0; - case 'Z': - case 'C': - case 'B': - case 'S': - case 'I': - return INTEGER; - case 'F': - return FLOAT; - case 'J': - return LONG; - case 'D': - return DOUBLE; - case 'L': - // stores the internal name, not the descriptor! - t = desc.substring(index + 1, desc.length() - 1); - return OBJECT | cw.addType(t); - // case '[': - default: - // extracts the dimensions and the element type - int data; - int dims = index + 1; - while (desc.charAt(dims) == '[') { - ++dims; - } - switch (desc.charAt(dims)) { - case 'Z': - data = BOOLEAN; - break; - case 'C': - data = CHAR; - break; - case 'B': - data = BYTE; - break; - case 'S': - data = SHORT; - break; - case 'I': - data = INTEGER; - break; - case 'F': - data = FLOAT; - break; - case 'J': - data = LONG; - break; - case 'D': - data = DOUBLE; - break; - // case 'L': - default: - // stores the internal name, not the descriptor - t = desc.substring(dims + 1, desc.length() - 1); - data = OBJECT | cw.addType(t); - } - return (dims - index) << 28 | data; - } - } - - /** - * Pops a type from the output frame stack and returns its value. - * - * @return the type that has been popped from the output frame stack. - */ - private int pop() { - if (outputStackTop > 0) { - return outputStack[--outputStackTop]; - } else { - // if the output frame stack is empty, pops from the input stack - return STACK | -(--owner.inputStackTop); - } - } - - /** - * Pops the given number of types from the output frame stack. - * - * @param elements the number of types that must be popped. - */ - private void pop(final int elements) { - if (outputStackTop >= elements) { - outputStackTop -= elements; - } else { - // if the number of elements to be popped is greater than the number - // of elements in the output stack, clear it, and pops the remaining - // elements from the input stack. - owner.inputStackTop -= elements - outputStackTop; - outputStackTop = 0; - } - } - - /** - * Pops a type from the output frame stack. - * - * @param desc the descriptor of the type to be popped. Can also be a method - * descriptor (in this case this method pops the types - * corresponding to the method arguments). - */ - private void pop(final String desc) { - char c = desc.charAt(0); - if (c == '(') { - pop((Type.getArgumentsAndReturnSizes(desc) >> 2) - 1); - } else if (c == 'J' || c == 'D') { - pop(2); - } else { - pop(1); - } - } - - /** - * Adds a new type to the list of types on which a constructor is invoked in - * the basic block. - * - * @param var a type on a which a constructor is invoked. - */ - private void init(final int var) { - // creates and/or resizes the initializations array if necessary - if (initializations == null) { - initializations = new int[2]; - } - int n = initializations.length; - if (initializationCount >= n) { - int[] t = new int[Math.max(initializationCount + 1, 2 * n)]; - System.arraycopy(initializations, 0, t, 0, n); - initializations = t; - } - // stores the type to be initialized - initializations[initializationCount++] = var; - } - - /** - * Replaces the given type with the appropriate type if it is one of the - * types on which a constructor is invoked in the basic block. - * - * @param cw the ClassWriter to which this label belongs. - * @param t a type - * @return t or, if t is one of the types on which a constructor is invoked - * in the basic block, the type corresponding to this constructor. - */ - private int init(final ClassWriter cw, final int t) { - int s; - if (t == UNINITIALIZED_THIS) { - s = OBJECT | cw.addType(cw.thisName); - } else if ((t & (DIM | BASE_KIND)) == UNINITIALIZED) { - String type = cw.typeTable[t & BASE_VALUE].strVal1; - s = OBJECT | cw.addType(type); - } else { - return t; - } - for (int j = 0; j < initializationCount; ++j) { - int u = initializations[j]; - int dim = u & DIM; - int kind = u & KIND; - if (kind == LOCAL) { - u = dim + inputLocals[u & VALUE]; - } else if (kind == STACK) { - u = dim + inputStack[inputStack.length - (u & VALUE)]; - } - if (t == u) { - return s; - } - } - return t; - } - - /** - * Initializes the input frame of the first basic block from the method - * descriptor. - * - * @param cw the ClassWriter to which this label belongs. - * @param access the access flags of the method to which this label belongs. - * @param args the formal parameter types of this method. - * @param maxLocals the maximum number of local variables of this method. - */ - void initInputFrame(final ClassWriter cw, final int access, - final Type[] args, final int maxLocals) { - inputLocals = new int[maxLocals]; - inputStack = new int[0]; - int i = 0; - if ((access & Opcodes.ACC_STATIC) == 0) { - if ((access & MethodWriter.ACC_CONSTRUCTOR) == 0) { - inputLocals[i++] = OBJECT | cw.addType(cw.thisName); - } else { - inputLocals[i++] = UNINITIALIZED_THIS; - } - } - for (int j = 0; j < args.length; ++j) { - int t = type(cw, args[j].getDescriptor()); - inputLocals[i++] = t; - if (t == LONG || t == DOUBLE) { - inputLocals[i++] = TOP; - } - } - while (i < maxLocals) { - inputLocals[i++] = TOP; - } - } - - /** - * Simulates the action of the given instruction on the output stack frame. - * - * @param opcode the opcode of the instruction. - * @param arg the operand of the instruction, if any. - * @param cw the class writer to which this label belongs. - * @param item the operand of the instructions, if any. - */ - void execute(final int opcode, final int arg, final ClassWriter cw, - final Item item) { - int t1, t2, t3, t4; - switch (opcode) { - case Opcodes.NOP: - case Opcodes.INEG: - case Opcodes.LNEG: - case Opcodes.FNEG: - case Opcodes.DNEG: - case Opcodes.I2B: - case Opcodes.I2C: - case Opcodes.I2S: - case Opcodes.GOTO: - case Opcodes.RETURN: - break; - case Opcodes.ACONST_NULL: - push(NULL); - break; - case Opcodes.ICONST_M1: - case Opcodes.ICONST_0: - case Opcodes.ICONST_1: - case Opcodes.ICONST_2: - case Opcodes.ICONST_3: - case Opcodes.ICONST_4: - case Opcodes.ICONST_5: - case Opcodes.BIPUSH: - case Opcodes.SIPUSH: - case Opcodes.ILOAD: - push(INTEGER); - break; - case Opcodes.LCONST_0: - case Opcodes.LCONST_1: - case Opcodes.LLOAD: - push(LONG); - push(TOP); - break; - case Opcodes.FCONST_0: - case Opcodes.FCONST_1: - case Opcodes.FCONST_2: - case Opcodes.FLOAD: - push(FLOAT); - break; - case Opcodes.DCONST_0: - case Opcodes.DCONST_1: - case Opcodes.DLOAD: - push(DOUBLE); - push(TOP); - break; - case Opcodes.LDC: - switch (item.type) { - case ClassWriter.INT: - push(INTEGER); - break; - case ClassWriter.LONG: - push(LONG); - push(TOP); - break; - case ClassWriter.FLOAT: - push(FLOAT); - break; - case ClassWriter.DOUBLE: - push(DOUBLE); - push(TOP); - break; - case ClassWriter.CLASS: - push(OBJECT | cw.addType("java/lang/Class")); - break; - case ClassWriter.STR: - push(OBJECT | cw.addType("java/lang/String")); - break; - case ClassWriter.MTYPE: - push(OBJECT | cw.addType("java/lang/invoke/MethodType")); - break; - // case ClassWriter.HANDLE_BASE + [1..9]: - default: - push(OBJECT | cw.addType("java/lang/invoke/MethodHandle")); - } - break; - case Opcodes.ALOAD: - push(get(arg)); - break; - case Opcodes.IALOAD: - case Opcodes.BALOAD: - case Opcodes.CALOAD: - case Opcodes.SALOAD: - pop(2); - push(INTEGER); - break; - case Opcodes.LALOAD: - case Opcodes.D2L: - pop(2); - push(LONG); - push(TOP); - break; - case Opcodes.FALOAD: - pop(2); - push(FLOAT); - break; - case Opcodes.DALOAD: - case Opcodes.L2D: - pop(2); - push(DOUBLE); - push(TOP); - break; - case Opcodes.AALOAD: - pop(1); - t1 = pop(); - push(ELEMENT_OF + t1); - break; - case Opcodes.ISTORE: - case Opcodes.FSTORE: - case Opcodes.ASTORE: - t1 = pop(); - set(arg, t1); - if (arg > 0) { - t2 = get(arg - 1); - // if t2 is of kind STACK or LOCAL we cannot know its size! - if (t2 == LONG || t2 == DOUBLE) { - set(arg - 1, TOP); - } else if ((t2 & KIND) != BASE) { - set(arg - 1, t2 | TOP_IF_LONG_OR_DOUBLE); - } - } - break; - case Opcodes.LSTORE: - case Opcodes.DSTORE: - pop(1); - t1 = pop(); - set(arg, t1); - set(arg + 1, TOP); - if (arg > 0) { - t2 = get(arg - 1); - // if t2 is of kind STACK or LOCAL we cannot know its size! - if (t2 == LONG || t2 == DOUBLE) { - set(arg - 1, TOP); - } else if ((t2 & KIND) != BASE) { - set(arg - 1, t2 | TOP_IF_LONG_OR_DOUBLE); - } - } - break; - case Opcodes.IASTORE: - case Opcodes.BASTORE: - case Opcodes.CASTORE: - case Opcodes.SASTORE: - case Opcodes.FASTORE: - case Opcodes.AASTORE: - pop(3); - break; - case Opcodes.LASTORE: - case Opcodes.DASTORE: - pop(4); - break; - case Opcodes.POP: - case Opcodes.IFEQ: - case Opcodes.IFNE: - case Opcodes.IFLT: - case Opcodes.IFGE: - case Opcodes.IFGT: - case Opcodes.IFLE: - case Opcodes.IRETURN: - case Opcodes.FRETURN: - case Opcodes.ARETURN: - case Opcodes.TABLESWITCH: - case Opcodes.LOOKUPSWITCH: - case Opcodes.ATHROW: - case Opcodes.MONITORENTER: - case Opcodes.MONITOREXIT: - case Opcodes.IFNULL: - case Opcodes.IFNONNULL: - pop(1); - break; - case Opcodes.POP2: - case Opcodes.IF_ICMPEQ: - case Opcodes.IF_ICMPNE: - case Opcodes.IF_ICMPLT: - case Opcodes.IF_ICMPGE: - case Opcodes.IF_ICMPGT: - case Opcodes.IF_ICMPLE: - case Opcodes.IF_ACMPEQ: - case Opcodes.IF_ACMPNE: - case Opcodes.LRETURN: - case Opcodes.DRETURN: - pop(2); - break; - case Opcodes.DUP: - t1 = pop(); - push(t1); - push(t1); - break; - case Opcodes.DUP_X1: - t1 = pop(); - t2 = pop(); - push(t1); - push(t2); - push(t1); - break; - case Opcodes.DUP_X2: - t1 = pop(); - t2 = pop(); - t3 = pop(); - push(t1); - push(t3); - push(t2); - push(t1); - break; - case Opcodes.DUP2: - t1 = pop(); - t2 = pop(); - push(t2); - push(t1); - push(t2); - push(t1); - break; - case Opcodes.DUP2_X1: - t1 = pop(); - t2 = pop(); - t3 = pop(); - push(t2); - push(t1); - push(t3); - push(t2); - push(t1); - break; - case Opcodes.DUP2_X2: - t1 = pop(); - t2 = pop(); - t3 = pop(); - t4 = pop(); - push(t2); - push(t1); - push(t4); - push(t3); - push(t2); - push(t1); - break; - case Opcodes.SWAP: - t1 = pop(); - t2 = pop(); - push(t1); - push(t2); - break; - case Opcodes.IADD: - case Opcodes.ISUB: - case Opcodes.IMUL: - case Opcodes.IDIV: - case Opcodes.IREM: - case Opcodes.IAND: - case Opcodes.IOR: - case Opcodes.IXOR: - case Opcodes.ISHL: - case Opcodes.ISHR: - case Opcodes.IUSHR: - case Opcodes.L2I: - case Opcodes.D2I: - case Opcodes.FCMPL: - case Opcodes.FCMPG: - pop(2); - push(INTEGER); - break; - case Opcodes.LADD: - case Opcodes.LSUB: - case Opcodes.LMUL: - case Opcodes.LDIV: - case Opcodes.LREM: - case Opcodes.LAND: - case Opcodes.LOR: - case Opcodes.LXOR: - pop(4); - push(LONG); - push(TOP); - break; - case Opcodes.FADD: - case Opcodes.FSUB: - case Opcodes.FMUL: - case Opcodes.FDIV: - case Opcodes.FREM: - case Opcodes.L2F: - case Opcodes.D2F: - pop(2); - push(FLOAT); - break; - case Opcodes.DADD: - case Opcodes.DSUB: - case Opcodes.DMUL: - case Opcodes.DDIV: - case Opcodes.DREM: - pop(4); - push(DOUBLE); - push(TOP); - break; - case Opcodes.LSHL: - case Opcodes.LSHR: - case Opcodes.LUSHR: - pop(3); - push(LONG); - push(TOP); - break; - case Opcodes.IINC: - set(arg, INTEGER); - break; - case Opcodes.I2L: - case Opcodes.F2L: - pop(1); - push(LONG); - push(TOP); - break; - case Opcodes.I2F: - pop(1); - push(FLOAT); - break; - case Opcodes.I2D: - case Opcodes.F2D: - pop(1); - push(DOUBLE); - push(TOP); - break; - case Opcodes.F2I: - case Opcodes.ARRAYLENGTH: - case Opcodes.INSTANCEOF: - pop(1); - push(INTEGER); - break; - case Opcodes.LCMP: - case Opcodes.DCMPL: - case Opcodes.DCMPG: - pop(4); - push(INTEGER); - break; - case Opcodes.JSR: - case Opcodes.RET: - throw new RuntimeException( - "JSR/RET are not supported with computeFrames option"); - case Opcodes.GETSTATIC: - push(cw, item.strVal3); - break; - case Opcodes.PUTSTATIC: - pop(item.strVal3); - break; - case Opcodes.GETFIELD: - pop(1); - push(cw, item.strVal3); - break; - case Opcodes.PUTFIELD: - pop(item.strVal3); - pop(); - break; - case Opcodes.INVOKEVIRTUAL: - case Opcodes.INVOKESPECIAL: - case Opcodes.INVOKESTATIC: - case Opcodes.INVOKEINTERFACE: - pop(item.strVal3); - if (opcode != Opcodes.INVOKESTATIC) { - t1 = pop(); - if (opcode == Opcodes.INVOKESPECIAL - && item.strVal2.charAt(0) == '<') { - init(t1); - } - } - push(cw, item.strVal3); - break; - case Opcodes.INVOKEDYNAMIC: - pop(item.strVal2); - push(cw, item.strVal2); - break; - case Opcodes.NEW: - push(UNINITIALIZED | cw.addUninitializedType(item.strVal1, arg)); - break; - case Opcodes.NEWARRAY: - pop(); - switch (arg) { - case Opcodes.T_BOOLEAN: - push(ARRAY_OF | BOOLEAN); - break; - case Opcodes.T_CHAR: - push(ARRAY_OF | CHAR); - break; - case Opcodes.T_BYTE: - push(ARRAY_OF | BYTE); - break; - case Opcodes.T_SHORT: - push(ARRAY_OF | SHORT); - break; - case Opcodes.T_INT: - push(ARRAY_OF | INTEGER); - break; - case Opcodes.T_FLOAT: - push(ARRAY_OF | FLOAT); - break; - case Opcodes.T_DOUBLE: - push(ARRAY_OF | DOUBLE); - break; - // case Opcodes.T_LONG: - default: - push(ARRAY_OF | LONG); - break; - } - break; - case Opcodes.ANEWARRAY: - String s = item.strVal1; - pop(); - if (s.charAt(0) == '[') { - push(cw, '[' + s); - } else { - push(ARRAY_OF | OBJECT | cw.addType(s)); - } - break; - case Opcodes.CHECKCAST: - s = item.strVal1; - pop(); - if (s.charAt(0) == '[') { - push(cw, s); - } else { - push(OBJECT | cw.addType(s)); - } - break; - // case Opcodes.MULTIANEWARRAY: - default: - pop(arg); - push(cw, item.strVal1); - break; - } - } - - /** - * Merges the input frame of the given basic block with the input and output - * frames of this basic block. Returns true if the input frame of - * the given label has been changed by this operation. - * - * @param cw the ClassWriter to which this label belongs. - * @param frame the basic block whose input frame must be updated. - * @param edge the kind of the {@link Edge} between this label and 'label'. - * See {@link Edge#info}. - * @return true if the input frame of the given label has been - * changed by this operation. - */ - boolean merge(final ClassWriter cw, final Frame frame, final int edge) { - boolean changed = false; - int i, s, dim, kind, t; - - int nLocal = inputLocals.length; - int nStack = inputStack.length; - if (frame.inputLocals == null) { - frame.inputLocals = new int[nLocal]; - changed = true; - } - - for (i = 0; i < nLocal; ++i) { - if (outputLocals != null && i < outputLocals.length) { - s = outputLocals[i]; - if (s == 0) { - t = inputLocals[i]; - } else { - dim = s & DIM; - kind = s & KIND; - if (kind == BASE) { - t = s; - } else { - if (kind == LOCAL) { - t = dim + inputLocals[s & VALUE]; - } else { - t = dim + inputStack[nStack - (s & VALUE)]; - } - if ((s & TOP_IF_LONG_OR_DOUBLE) != 0 - && (t == LONG || t == DOUBLE)) { - t = TOP; - } - } - } - } else { - t = inputLocals[i]; - } - if (initializations != null) { - t = init(cw, t); - } - changed |= merge(cw, t, frame.inputLocals, i); - } - - if (edge > 0) { - for (i = 0; i < nLocal; ++i) { - t = inputLocals[i]; - changed |= merge(cw, t, frame.inputLocals, i); - } - if (frame.inputStack == null) { - frame.inputStack = new int[1]; - changed = true; - } - changed |= merge(cw, edge, frame.inputStack, 0); - return changed; - } - - int nInputStack = inputStack.length + owner.inputStackTop; - if (frame.inputStack == null) { - frame.inputStack = new int[nInputStack + outputStackTop]; - changed = true; - } - - for (i = 0; i < nInputStack; ++i) { - t = inputStack[i]; - if (initializations != null) { - t = init(cw, t); - } - changed |= merge(cw, t, frame.inputStack, i); - } - for (i = 0; i < outputStackTop; ++i) { - s = outputStack[i]; - dim = s & DIM; - kind = s & KIND; - if (kind == BASE) { - t = s; - } else { - if (kind == LOCAL) { - t = dim + inputLocals[s & VALUE]; - } else { - t = dim + inputStack[nStack - (s & VALUE)]; - } - if ((s & TOP_IF_LONG_OR_DOUBLE) != 0 - && (t == LONG || t == DOUBLE)) { - t = TOP; - } - } - if (initializations != null) { - t = init(cw, t); - } - changed |= merge(cw, t, frame.inputStack, nInputStack + i); - } - return changed; - } - - /** - * Merges the type at the given index in the given type array with the given - * type. Returns true if the type array has been modified by this - * operation. - * - * @param cw the ClassWriter to which this label belongs. - * @param t the type with which the type array element must be merged. - * @param types an array of types. - * @param index the index of the type that must be merged in 'types'. - * @return true if the type array has been modified by this - * operation. - */ - private static boolean merge(final ClassWriter cw, int t, - final int[] types, final int index) { - int u = types[index]; - if (u == t) { - // if the types are equal, merge(u,t)=u, so there is no change - return false; - } - if ((t & ~DIM) == NULL) { - if (u == NULL) { - return false; - } - t = NULL; - } - if (u == 0) { - // if types[index] has never been assigned, merge(u,t)=t - types[index] = t; - return true; - } - int v; - if ((u & BASE_KIND) == OBJECT || (u & DIM) != 0) { - // if u is a reference type of any dimension - if (t == NULL) { - // if t is the NULL type, merge(u,t)=u, so there is no change - return false; - } else if ((t & (DIM | BASE_KIND)) == (u & (DIM | BASE_KIND))) { - // if t and u have the same dimension and same base kind - if ((u & BASE_KIND) == OBJECT) { - // if t is also a reference type, and if u and t have the - // same dimension merge(u,t) = dim(t) | common parent of the - // element types of u and t - v = (t & DIM) | OBJECT - | cw.getMergedType(t & BASE_VALUE, u & BASE_VALUE); - } else { - // if u and t are array types, but not with the same element - // type, merge(u,t) = dim(u) - 1 | java/lang/Object - int vdim = ELEMENT_OF + (u & DIM); - v = vdim | OBJECT | cw.addType("java/lang/Object"); - } - } else if ((t & BASE_KIND) == OBJECT || (t & DIM) != 0) { - // if t is any other reference or array type, the merged type - // is min(udim, tdim) | java/lang/Object, where udim is the - // array dimension of u, minus 1 if u is an array type with a - // primitive element type (and similarly for tdim). - int tdim = (((t & DIM) == 0 || (t & BASE_KIND) == OBJECT) ? 0 - : ELEMENT_OF) + (t & DIM); - int udim = (((u & DIM) == 0 || (u & BASE_KIND) == OBJECT) ? 0 - : ELEMENT_OF) + (u & DIM); - v = Math.min(tdim, udim) | OBJECT - | cw.addType("java/lang/Object"); - } else { - // if t is any other type, merge(u,t)=TOP - v = TOP; - } - } else if (u == NULL) { - // if u is the NULL type, merge(u,t)=t, - // or TOP if t is not a reference type - v = (t & BASE_KIND) == OBJECT || (t & DIM) != 0 ? t : TOP; - } else { - // if u is any other type, merge(u,t)=TOP whatever t - v = TOP; - } - if (u != v) { - types[index] = v; - return true; - } - return false; - } -} diff --git a/src/org/objectweb/asm/Handle.java b/src/org/objectweb/asm/Handle.java deleted file mode 100644 index a886bce3b..000000000 --- a/src/org/objectweb/asm/Handle.java +++ /dev/null @@ -1,166 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -package org.objectweb.asm; - -/** - * A reference to a field or a method. - * - * @author Remi Forax - * @author Eric Bruneton - */ -public final class Handle { - - /** - * The kind of field or method designated by this Handle. Should be - * {@link Opcodes#H_GETFIELD}, {@link Opcodes#H_GETSTATIC}, - * {@link Opcodes#H_PUTFIELD}, {@link Opcodes#H_PUTSTATIC}, - * {@link Opcodes#H_INVOKEVIRTUAL}, {@link Opcodes#H_INVOKESTATIC}, - * {@link Opcodes#H_INVOKESPECIAL}, {@link Opcodes#H_NEWINVOKESPECIAL} or - * {@link Opcodes#H_INVOKEINTERFACE}. - */ - final int tag; - - /** - * The internal name of the class that owns the field or method designated - * by this handle. - */ - final String owner; - - /** - * The name of the field or method designated by this handle. - */ - final String name; - - /** - * The descriptor of the field or method designated by this handle. - */ - final String desc; - - /** - * Constructs a new field or method handle. - * - * @param tag the kind of field or method designated by this Handle. Must be - * {@link Opcodes#H_GETFIELD}, {@link Opcodes#H_GETSTATIC}, - * {@link Opcodes#H_PUTFIELD}, {@link Opcodes#H_PUTSTATIC}, - * {@link Opcodes#H_INVOKEVIRTUAL}, - * {@link Opcodes#H_INVOKESTATIC}, - * {@link Opcodes#H_INVOKESPECIAL}, - * {@link Opcodes#H_NEWINVOKESPECIAL} or - * {@link Opcodes#H_INVOKEINTERFACE}. - * @param owner the internal name of the class that owns the field or method - * designated by this handle. - * @param name the name of the field or method designated by this handle. - * @param desc the descriptor of the field or method designated by this - * handle. - */ - public Handle(int tag, String owner, String name, String desc) { - this.tag = tag; - this.owner = owner; - this.name = name; - this.desc = desc; - } - - /** - * Returns the kind of field or method designated by this handle. - * - * @return {@link Opcodes#H_GETFIELD}, {@link Opcodes#H_GETSTATIC}, - * {@link Opcodes#H_PUTFIELD}, {@link Opcodes#H_PUTSTATIC}, - * {@link Opcodes#H_INVOKEVIRTUAL}, {@link Opcodes#H_INVOKESTATIC}, - * {@link Opcodes#H_INVOKESPECIAL}, - * {@link Opcodes#H_NEWINVOKESPECIAL} or - * {@link Opcodes#H_INVOKEINTERFACE}. - */ - public int getTag() { - return tag; - } - - /** - * Returns the internal name of the class that owns the field or method - * designated by this handle. - * - * @return the internal name of the class that owns the field or method - * designated by this handle. - */ - public String getOwner() { - return owner; - } - - /** - * Returns the name of the field or method designated by this handle. - * - * @return the name of the field or method designated by this handle. - */ - public String getName() { - return name; - } - - /** - * Returns the descriptor of the field or method designated by this handle. - * - * @return the descriptor of the field or method designated by this handle. - */ - public String getDesc() { - return desc; - } - - @Override - public boolean equals(Object obj) { - if (obj == this) { - return true; - } - if (!(obj instanceof Handle)) { - return false; - } - Handle h = (Handle) obj; - return tag == h.tag && owner.equals(h.owner) && name.equals(h.name) - && desc.equals(h.desc); - } - - @Override - public int hashCode() { - return tag + owner.hashCode() * name.hashCode() * desc.hashCode(); - } - - /** - * Returns the textual representation of this handle. The textual - * representation is: - *

- * 

-     * owner '.' name desc ' ' '(' tag ')'
-     *
- *

- * . As this format is unambiguous, it can be parsed if necessary. - */ - @Override - public String toString() { - return owner + '.' + name + desc + " (" + tag + ')'; - } -} diff --git a/src/org/objectweb/asm/Handler.java b/src/org/objectweb/asm/Handler.java deleted file mode 100644 index e64e691cd..000000000 --- a/src/org/objectweb/asm/Handler.java +++ /dev/null @@ -1,118 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * Information about an exception handler block. - * - * @author Eric Bruneton - */ -class Handler { - - /** - * Beginning of the exception handler's scope (inclusive). - */ - Label start; - - /** - * End of the exception handler's scope (exclusive). - */ - Label end; - - /** - * Beginning of the exception handler's code. - */ - Label handler; - - /** - * Internal name of the type of exceptions handled by this handler, or - * null to catch any exceptions. - */ - String desc; - - /** - * Constant pool index of the internal name of the type of exceptions - * handled by this handler, or 0 to catch any exceptions. - */ - int type; - - /** - * Next exception handler block info. - */ - Handler next; - - /** - * Removes the range between start and end from the given exception - * handlers. - * - * @param h an exception handler list. - * @param start the start of the range to be removed. - * @param end the end of the range to be removed. Maybe null. - * @return the exception handler list with the start-end range removed. - */ - static Handler remove(Handler h, Label start, Label end) { - if (h == null) { - return null; - } else { - h.next = remove(h.next, start, end); - } - int hstart = h.start.position; - int hend = h.end.position; - int s = start.position; - int e = end == null ? Integer.MAX_VALUE : end.position; - // if [hstart,hend[ and [s,e[ intervals intersect... - if (s < hend && e > hstart) { - if (s <= hstart) { - if (e >= hend) { - // [hstart,hend[ fully included in [s,e[, h removed - h = h.next; - } else { - // [hstart,hend[ minus [s,e[ = [e,hend[ - h.start = end; - } - } else if (e >= hend) { - // [hstart,hend[ minus [s,e[ = [hstart,s[ - h.end = start; - } else { - // [hstart,hend[ minus [s,e[ = [hstart,s[ + [e,hend[ - Handler g = new Handler(); - g.start = end; - g.end = h.end; - g.handler = h.handler; - g.desc = h.desc; - g.type = h.type; - g.next = h.next; - h.end = start; - h.next = g; - } - } - return h; - } -} diff --git a/src/org/objectweb/asm/Item.java b/src/org/objectweb/asm/Item.java deleted file mode 100644 index fc20b9845..000000000 --- a/src/org/objectweb/asm/Item.java +++ /dev/null @@ -1,295 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A constant pool item. Constant pool items can be created with the 'newXXX' - * methods in the {@link ClassWriter} class. - * - * @author Eric Bruneton - */ -final class Item { - - /** - * Index of this item in the constant pool. - */ - int index; - - /** - * Type of this constant pool item. A single class is used to represent all - * constant pool item types, in order to minimize the bytecode size of this - * package. The value of this field is one of {@link ClassWriter#INT}, - * {@link ClassWriter#LONG}, {@link ClassWriter#FLOAT}, - * {@link ClassWriter#DOUBLE}, {@link ClassWriter#UTF8}, - * {@link ClassWriter#STR}, {@link ClassWriter#CLASS}, - * {@link ClassWriter#NAME_TYPE}, {@link ClassWriter#FIELD}, - * {@link ClassWriter#METH}, {@link ClassWriter#IMETH}, - * {@link ClassWriter#MTYPE}, {@link ClassWriter#INDY}. - *

- * MethodHandle constant 9 variations are stored using a range of 9 values - * from {@link ClassWriter#HANDLE_BASE} + 1 to - * {@link ClassWriter#HANDLE_BASE} + 9. - *

- * Special Item types are used for Items that are stored in the ClassWriter - * {@link ClassWriter#typeTable}, instead of the constant pool, in order to - * avoid clashes with normal constant pool items in the ClassWriter constant - * pool's hash table. These special item types are - * {@link ClassWriter#TYPE_NORMAL}, {@link ClassWriter#TYPE_UNINIT} and - * {@link ClassWriter#TYPE_MERGED}. - */ - int type; - - /** - * Value of this item, for an integer item. - */ - int intVal; - - /** - * Value of this item, for a long item. - */ - long longVal; - - /** - * First part of the value of this item, for items that do not hold a - * primitive value. - */ - String strVal1; - - /** - * Second part of the value of this item, for items that do not hold a - * primitive value. - */ - String strVal2; - - /** - * Third part of the value of this item, for items that do not hold a - * primitive value. - */ - String strVal3; - - /** - * The hash code value of this constant pool item. - */ - int hashCode; - - /** - * Link to another constant pool item, used for collision lists in the - * constant pool's hash table. - */ - Item next; - - /** - * Constructs an uninitialized {@link Item}. - */ - Item() { - } - - /** - * Constructs an uninitialized {@link Item} for constant pool element at - * given position. - * - * @param index index of the item to be constructed. - */ - Item(final int index) { - this.index = index; - } - - /** - * Constructs a copy of the given item. - * - * @param index index of the item to be constructed. - * @param i the item that must be copied into the item to be constructed. - */ - Item(final int index, final Item i) { - this.index = index; - type = i.type; - intVal = i.intVal; - longVal = i.longVal; - strVal1 = i.strVal1; - strVal2 = i.strVal2; - strVal3 = i.strVal3; - hashCode = i.hashCode; - } - - /** - * Sets this item to an integer item. - * - * @param intVal the value of this item. - */ - void set(final int intVal) { - this.type = ClassWriter.INT; - this.intVal = intVal; - this.hashCode = 0x7FFFFFFF & (type + intVal); - } - - /** - * Sets this item to a long item. - * - * @param longVal the value of this item. - */ - void set(final long longVal) { - this.type = ClassWriter.LONG; - this.longVal = longVal; - this.hashCode = 0x7FFFFFFF & (type + (int) longVal); - } - - /** - * Sets this item to a float item. - * - * @param floatVal the value of this item. - */ - void set(final float floatVal) { - this.type = ClassWriter.FLOAT; - this.intVal = Float.floatToRawIntBits(floatVal); - this.hashCode = 0x7FFFFFFF & (type + (int) floatVal); - } - - /** - * Sets this item to a double item. - * - * @param doubleVal the value of this item. - */ - void set(final double doubleVal) { - this.type = ClassWriter.DOUBLE; - this.longVal = Double.doubleToRawLongBits(doubleVal); - this.hashCode = 0x7FFFFFFF & (type + (int) doubleVal); - } - - /** - * Sets this item to an item that do not hold a primitive value. - * - * @param type the type of this item. - * @param strVal1 first part of the value of this item. - * @param strVal2 second part of the value of this item. - * @param strVal3 third part of the value of this item. - */ - @SuppressWarnings("fallthrough") - void set(final int type, final String strVal1, final String strVal2, - final String strVal3) { - this.type = type; - this.strVal1 = strVal1; - this.strVal2 = strVal2; - this.strVal3 = strVal3; - switch (type) { - case ClassWriter.CLASS: - this.intVal = 0; // intVal of a class must be zero, see visitInnerClass - case ClassWriter.UTF8: - case ClassWriter.STR: - case ClassWriter.MTYPE: - case ClassWriter.TYPE_NORMAL: - hashCode = 0x7FFFFFFF & (type + strVal1.hashCode()); - return; - case ClassWriter.NAME_TYPE: { - hashCode = 0x7FFFFFFF & (type + strVal1.hashCode() - * strVal2.hashCode()); - return; - } - // ClassWriter.FIELD: - // ClassWriter.METH: - // ClassWriter.IMETH: - // ClassWriter.HANDLE_BASE + 1..9 - default: - hashCode = 0x7FFFFFFF & (type + strVal1.hashCode() - * strVal2.hashCode() * strVal3.hashCode()); - } - } - - /** - * Sets the item to an InvokeDynamic item. - * - * @param name invokedynamic's name. - * @param desc invokedynamic's desc. - * @param bsmIndex zero based index into the class attribute BootrapMethods. - */ - void set(String name, String desc, int bsmIndex) { - this.type = ClassWriter.INDY; - this.longVal = bsmIndex; - this.strVal1 = name; - this.strVal2 = desc; - this.hashCode = 0x7FFFFFFF & (ClassWriter.INDY + bsmIndex - * strVal1.hashCode() * strVal2.hashCode()); - } - - /** - * Sets the item to a BootstrapMethod item. - * - * @param position position in byte in the class attribute BootrapMethods. - * @param hashCode hashcode of the item. This hashcode is processed from the - * hashcode of the bootstrap method and the hashcode of all - * bootstrap arguments. - */ - void set(int position, int hashCode) { - this.type = ClassWriter.BSM; - this.intVal = position; - this.hashCode = hashCode; - } - - /** - * Indicates if the given item is equal to this one. This method assumes - * that the two items have the same {@link #type}. - * - * @param i the item to be compared to this one. Both items must have the - * same {@link #type}. - * @return true if the given item if equal to this one, - * false otherwise. - */ - boolean isEqualTo(final Item i) { - switch (type) { - case ClassWriter.UTF8: - case ClassWriter.STR: - case ClassWriter.CLASS: - case ClassWriter.MTYPE: - case ClassWriter.TYPE_NORMAL: - return i.strVal1.equals(strVal1); - case ClassWriter.TYPE_MERGED: - case ClassWriter.LONG: - case ClassWriter.DOUBLE: - return i.longVal == longVal; - case ClassWriter.INT: - case ClassWriter.FLOAT: - return i.intVal == intVal; - case ClassWriter.TYPE_UNINIT: - return i.intVal == intVal && i.strVal1.equals(strVal1); - case ClassWriter.NAME_TYPE: - return i.strVal1.equals(strVal1) && i.strVal2.equals(strVal2); - case ClassWriter.INDY: { - return i.longVal == longVal && i.strVal1.equals(strVal1) - && i.strVal2.equals(strVal2); - } - // case ClassWriter.FIELD: - // case ClassWriter.METH: - // case ClassWriter.IMETH: - // case ClassWriter.HANDLE_BASE + 1..9 - default: - return i.strVal1.equals(strVal1) && i.strVal2.equals(strVal2) - && i.strVal3.equals(strVal3); - } - } -} diff --git a/src/org/objectweb/asm/Label.java b/src/org/objectweb/asm/Label.java deleted file mode 100644 index edde4b029..000000000 --- a/src/org/objectweb/asm/Label.java +++ /dev/null @@ -1,546 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A label represents a position in the bytecode of a method. Labels are used - * for jump, goto, and switch instructions, and for try catch blocks. A label - * designates the instruction that is just after. Note however that there - * can be other elements between a label and the instruction it designates (such - * as other labels, stack map frames, line numbers, etc.). - * - * @author Eric Bruneton - */ -public class Label { - - /** - * Indicates if this label is only used for debug attributes. Such a label - * is not the start of a basic block, the target of a jump instruction, or - * an exception handler. It can be safely ignored in control flow graph - * analysis algorithms (for optimization purposes). - */ - static final int DEBUG = 1; - - /** - * Indicates if the position of this label is known. - */ - static final int RESOLVED = 2; - - /** - * Indicates if this label has been updated, after instruction resizing. - */ - static final int RESIZED = 4; - - /** - * Indicates if this basic block has been pushed in the basic block stack. - * See {@link MethodWriter#visitMaxs visitMaxs}. - */ - static final int PUSHED = 8; - - /** - * Indicates if this label is the target of a jump instruction, or the start - * of an exception handler. - */ - static final int TARGET = 16; - - /** - * Indicates if a stack map frame must be stored for this label. - */ - static final int STORE = 32; - - /** - * Indicates if this label corresponds to a reachable basic block. - */ - static final int REACHABLE = 64; - - /** - * Indicates if this basic block ends with a JSR instruction. - */ - static final int JSR = 128; - - /** - * Indicates if this basic block ends with a RET instruction. - */ - static final int RET = 256; - - /** - * Indicates if this basic block is the start of a subroutine. - */ - static final int SUBROUTINE = 512; - - /** - * Indicates if this subroutine basic block has been visited by a - * visitSubroutine(null, ...) call. - */ - static final int VISITED = 1024; - - /** - * Indicates if this subroutine basic block has been visited by a - * visitSubroutine(!null, ...) call. - */ - static final int VISITED2 = 2048; - - /** - * Field used to associate user information to a label. Warning: this field - * is used by the ASM tree package. In order to use it with the ASM tree - * package you must override the - * {@link org.objectweb.asm.tree.MethodNode#getLabelNode} method. - */ - public Object info; - - /** - * Flags that indicate the status of this label. - * - * @see #DEBUG - * @see #RESOLVED - * @see #RESIZED - * @see #PUSHED - * @see #TARGET - * @see #STORE - * @see #REACHABLE - * @see #JSR - * @see #RET - */ - int status; - - /** - * The line number corresponding to this label, if known. If there are - * several lines, each line is stored in a separate label, all linked via - * their next field (these links are created in ClassReader and removed just - * before visitLabel is called, so that this does not impact the rest of the - * code). - */ - int line; - - /** - * The position of this label in the code, if known. - */ - int position; - - /** - * Number of forward references to this label, times two. - */ - private int referenceCount; - - /** - * Informations about forward references. Each forward reference is - * described by two consecutive integers in this array: the first one is the - * position of the first byte of the bytecode instruction that contains the - * forward reference, while the second is the position of the first byte of - * the forward reference itself. In fact the sign of the first integer - * indicates if this reference uses 2 or 4 bytes, and its absolute value - * gives the position of the bytecode instruction. This array is also used - * as a bitset to store the subroutines to which a basic block belongs. This - * information is needed in {@linked MethodWriter#visitMaxs}, after all - * forward references have been resolved. Hence the same array can be used - * for both purposes without problems. - */ - private int[] srcAndRefPositions; - - // ------------------------------------------------------------------------ - - /* - * Fields for the control flow and data flow graph analysis algorithms (used - * to compute the maximum stack size or the stack map frames). A control - * flow graph contains one node per "basic block", and one edge per "jump" - * from one basic block to another. Each node (i.e., each basic block) is - * represented by the Label object that corresponds to the first instruction - * of this basic block. Each node also stores the list of its successors in - * the graph, as a linked list of Edge objects. - * - * The control flow analysis algorithms used to compute the maximum stack - * size or the stack map frames are similar and use two steps. The first - * step, during the visit of each instruction, builds information about the - * state of the local variables and the operand stack at the end of each - * basic block, called the "output frame", relatively to the frame - * state at the beginning of the basic block, which is called the "input - * frame", and which is unknown during this step. The second step, in - * {@link MethodWriter#visitMaxs}, is a fix point algorithm that computes - * information about the input frame of each basic block, from the input - * state of the first basic block (known from the method signature), and by - * the using the previously computed relative output frames. - * - * The algorithm used to compute the maximum stack size only computes the - * relative output and absolute input stack heights, while the algorithm - * used to compute stack map frames computes relative output frames and - * absolute input frames. - */ - - /** - * Start of the output stack relatively to the input stack. The exact - * semantics of this field depends on the algorithm that is used. - *

- * When only the maximum stack size is computed, this field is the number of - * elements in the input stack. - *

- * When the stack map frames are completely computed, this field is the - * offset of the first output stack element relatively to the top of the - * input stack. This offset is always negative or null. A null offset means - * that the output stack must be appended to the input stack. A -n offset - * means that the first n output stack elements must replace the top n input - * stack elements, and that the other elements must be appended to the input - * stack. - */ - int inputStackTop; - - /** - * Maximum height reached by the output stack, relatively to the top of the - * input stack. This maximum is always positive or null. - */ - int outputStackMax; - - /** - * Information about the input and output stack map frames of this basic - * block. This field is only used when {@link ClassWriter#COMPUTE_FRAMES} - * option is used. - */ - Frame frame; - - /** - * The successor of this label, in the order they are visited. This linked - * list does not include labels used for debug info only. If - * {@link ClassWriter#COMPUTE_FRAMES} option is used then, in addition, it - * does not contain successive labels that denote the same bytecode position - * (in this case only the first label appears in this list). - */ - Label successor; - - /** - * The successors of this node in the control flow graph. These successors - * are stored in a linked list of {@link Edge Edge} objects, linked to each - * other by their {@link Edge#next} field. - */ - Edge successors; - - /** - * The next basic block in the basic block stack. This stack is used in the - * main loop of the fix point algorithm used in the second step of the - * control flow analysis algorithms. It is also used in - * {@link #visitSubroutine} to avoid using a recursive method, and in - * ClassReader to temporarily store multiple source lines for a label. - * - * @see MethodWriter#visitMaxs - */ - Label next; - - // ------------------------------------------------------------------------ - // Constructor - // ------------------------------------------------------------------------ - - /** - * Constructs a new label. - */ - public Label() { - } - - // ------------------------------------------------------------------------ - // Methods to compute offsets and to manage forward references - // ------------------------------------------------------------------------ - - /** - * Returns the offset corresponding to this label. This offset is computed - * from the start of the method's bytecode. This method is intended for - * {@link Attribute} sub classes, and is normally not needed by class - * generators or adapters. - * - * @return the offset corresponding to this label. - * @throws IllegalStateException if this label is not resolved yet. - */ - public int getOffset() { - if ((status & RESOLVED) == 0) { - throw new IllegalStateException( - "Label offset position has not been resolved yet"); - } - return position; - } - - /** - * Puts a reference to this label in the bytecode of a method. If the - * position of the label is known, the offset is computed and written - * directly. Otherwise, a null offset is written and a new forward reference - * is declared for this label. - * - * @param owner the code writer that calls this method. - * @param out the bytecode of the method. - * @param source the position of first byte of the bytecode instruction that - * contains this label. - * @param wideOffset true if the reference must be stored in 4 bytes, or - * false if it must be stored with 2 bytes. - * @throws IllegalArgumentException if this label has not been created by the given code writer. - */ - void put(final MethodWriter owner, final ByteVector out, final int source, - final boolean wideOffset) { - if ((status & RESOLVED) == 0) { - if (wideOffset) { - addReference(-1 - source, out.length); - out.putInt(-1); - } else { - addReference(source, out.length); - out.putShort(-1); - } - } else { - if (wideOffset) { - out.putInt(position - source); - } else { - out.putShort(position - source); - } - } - } - - /** - * Adds a forward reference to this label. This method must be called only - * for a true forward reference, i.e. only if this label is not resolved - * yet. For backward references, the offset of the reference can be, and - * must be, computed and stored directly. - * - * @param sourcePosition the position of the referencing instruction. This position - * will be used to compute the offset of this forward reference. - * @param referencePosition the position where the offset for this forward reference must - * be stored. - */ - private void addReference(final int sourcePosition, - final int referencePosition) { - if (srcAndRefPositions == null) { - srcAndRefPositions = new int[6]; - } - if (referenceCount >= srcAndRefPositions.length) { - int[] a = new int[srcAndRefPositions.length + 6]; - System.arraycopy(srcAndRefPositions, 0, a, 0, - srcAndRefPositions.length); - srcAndRefPositions = a; - } - srcAndRefPositions[referenceCount++] = sourcePosition; - srcAndRefPositions[referenceCount++] = referencePosition; - } - - /** - * Resolves all forward references to this label. This method must be called - * when this label is added to the bytecode of the method, i.e. when its - * position becomes known. This method fills in the blanks that where left - * in the bytecode by each forward reference previously added to this label. - * - * @param owner the code writer that calls this method. - * @param position the position of this label in the bytecode. - * @param data the bytecode of the method. - * @return true if a blank that was left for this label was to - * small to store the offset. In such a case the corresponding jump - * instruction is replaced with a pseudo instruction (using unused - * opcodes) using an unsigned two bytes offset. These pseudo - * instructions will need to be replaced with true instructions with - * wider offsets (4 bytes instead of 2). This is done in - * {@link MethodWriter#resizeInstructions}. - * @throws IllegalArgumentException if this label has already been resolved, or if it has not - * been created by the given code writer. - */ - boolean resolve(final MethodWriter owner, final int position, - final byte[] data) { - boolean needUpdate = false; - this.status |= RESOLVED; - this.position = position; - int i = 0; - while (i < referenceCount) { - int source = srcAndRefPositions[i++]; - int reference = srcAndRefPositions[i++]; - int offset; - if (source >= 0) { - offset = position - source; - if (offset < Short.MIN_VALUE || offset > Short.MAX_VALUE) { - /* - * changes the opcode of the jump instruction, in order to - * be able to find it later (see resizeInstructions in - * MethodWriter). These temporary opcodes are similar to - * jump instruction opcodes, except that the 2 bytes offset - * is unsigned (and can therefore represent values from 0 to - * 65535, which is sufficient since the size of a method is - * limited to 65535 bytes). - */ - int opcode = data[reference - 1] & 0xFF; - if (opcode <= Opcodes.JSR) { - // changes IFEQ ... JSR to opcodes 202 to 217 - data[reference - 1] = (byte) (opcode + 49); - } else { - // changes IFNULL and IFNONNULL to opcodes 218 and 219 - data[reference - 1] = (byte) (opcode + 20); - } - needUpdate = true; - } - data[reference++] = (byte) (offset >>> 8); - data[reference] = (byte) offset; - } else { - offset = position + source + 1; - data[reference++] = (byte) (offset >>> 24); - data[reference++] = (byte) (offset >>> 16); - data[reference++] = (byte) (offset >>> 8); - data[reference] = (byte) offset; - } - } - return needUpdate; - } - - /** - * Returns the first label of the series to which this label belongs. For an - * isolated label or for the first label in a series of successive labels, - * this method returns the label itself. For other labels it returns the - * first label of the series. - * - * @return the first label of the series to which this label belongs. - */ - Label getFirst() { - return !ClassReader.FRAMES || frame == null ? this : frame.owner; - } - - // ------------------------------------------------------------------------ - // Methods related to subroutines - // ------------------------------------------------------------------------ - - /** - * Returns true is this basic block belongs to the given subroutine. - * - * @param id a subroutine id. - * @return true is this basic block belongs to the given subroutine. - */ - boolean inSubroutine(final long id) { - if ((status & Label.VISITED) != 0) { - return (srcAndRefPositions[(int) (id >>> 32)] & (int) id) != 0; - } - return false; - } - - /** - * Returns true if this basic block and the given one belong to a common - * subroutine. - * - * @param block another basic block. - * @return true if this basic block and the given one belong to a common - * subroutine. - */ - boolean inSameSubroutine(final Label block) { - if ((status & VISITED) == 0 || (block.status & VISITED) == 0) { - return false; - } - for (int i = 0; i < srcAndRefPositions.length; ++i) { - if ((srcAndRefPositions[i] & block.srcAndRefPositions[i]) != 0) { - return true; - } - } - return false; - } - - /** - * Marks this basic block as belonging to the given subroutine. - * - * @param id a subroutine id. - * @param nbSubroutines the total number of subroutines in the method. - */ - void addToSubroutine(final long id, final int nbSubroutines) { - if ((status & VISITED) == 0) { - status |= VISITED; - srcAndRefPositions = new int[nbSubroutines / 32 + 1]; - } - srcAndRefPositions[(int) (id >>> 32)] |= (int) id; - } - - /** - * Finds the basic blocks that belong to a given subroutine, and marks these - * blocks as belonging to this subroutine. This method follows the control - * flow graph to find all the blocks that are reachable from the current - * block WITHOUT following any JSR target. - * - * @param JSR a JSR block that jumps to this subroutine. If this JSR is not - * null it is added to the successor of the RET blocks found in - * the subroutine. - * @param id the id of this subroutine. - * @param nbSubroutines the total number of subroutines in the method. - */ - void visitSubroutine(final Label JSR, final long id, final int nbSubroutines) { - // user managed stack of labels, to avoid using a recursive method - // (recursivity can lead to stack overflow with very large methods) - Label stack = this; - while (stack != null) { - // removes a label l from the stack - Label l = stack; - stack = l.next; - l.next = null; - - if (JSR != null) { - if ((l.status & VISITED2) != 0) { - continue; - } - l.status |= VISITED2; - // adds JSR to the successors of l, if it is a RET block - if ((l.status & RET) != 0) { - if (!l.inSameSubroutine(JSR)) { - Edge e = new Edge(); - e.info = l.inputStackTop; - e.successor = JSR.successors.successor; - e.next = l.successors; - l.successors = e; - } - } - } else { - // if the l block already belongs to subroutine 'id', continue - if (l.inSubroutine(id)) { - continue; - } - // marks the l block as belonging to subroutine 'id' - l.addToSubroutine(id, nbSubroutines); - } - // pushes each successor of l on the stack, except JSR targets - Edge e = l.successors; - while (e != null) { - // if the l block is a JSR block, then 'l.successors.next' leads - // to the JSR target (see {@link #visitJumpInsn}) and must - // therefore not be followed - if ((l.status & Label.JSR) == 0 || e != l.successors.next) { - // pushes e.successor on the stack if it not already added - if (e.successor.next == null) { - e.successor.next = stack; - stack = e.successor; - } - } - e = e.next; - } - } - } - - // ------------------------------------------------------------------------ - // Overriden Object methods - // ------------------------------------------------------------------------ - - /** - * Returns a string representation of this label. - * - * @return a string representation of this label. - */ - @Override - public String toString() { - return "L" + System.identityHashCode(this); - } -} diff --git a/src/org/objectweb/asm/MethodVisitor.java b/src/org/objectweb/asm/MethodVisitor.java deleted file mode 100644 index fc9726eb0..000000000 --- a/src/org/objectweb/asm/MethodVisitor.java +++ /dev/null @@ -1,790 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - - -/** - * A visitor to visit a Java method. The methods of this class must be called in - * the following order: ( visitParameter )* [ - * visitAnnotationDefault ] ( visitAnnotation | - * visitParameterAnnotation visitTypeAnnotation | - * visitAttribute )* [ visitCode ( visitFrame | - * visitXInsn | visitLabel | - * visitInsnAnnotation | visitTryCatchBlock | - * visitTryCatchAnnotation | visitLocalVariable | - * visitLocalVariableAnnotation | visitLineNumber )* - * visitMaxs ] visitEnd. In addition, the - * visitXInsn and visitLabel methods must be called in - * the sequential order of the bytecode instructions of the visited code, - * visitInsnAnnotation must be called after the annotated - * instruction, visitTryCatchBlock must be called before the - * labels passed as arguments have been visited, - * visitTryCatchBlockAnnotation must be called after the - * corresponding try catch block has been visited, and the - * visitLocalVariable, visitLocalVariableAnnotation and - * visitLineNumber methods must be called after the labels - * passed as arguments have been visited. - * - * @author Eric Bruneton - */ -public abstract class MethodVisitor { - - /** - * The ASM API version implemented by this visitor. The value of this field - * must be one of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - protected final int api; - - /** - * The method visitor to which this visitor must delegate method calls. May - * be null. - */ - protected MethodVisitor mv; - - /** - * Constructs a new {@link MethodVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - */ - public MethodVisitor(final int api) { - this(api, null); - } - - /** - * Constructs a new {@link MethodVisitor}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - * @param mv the method visitor to which this visitor must delegate method - * calls. May be null. - */ - public MethodVisitor(final int api, final MethodVisitor mv) { - if (api != Opcodes.ASM4 && api != Opcodes.ASM5) { - throw new IllegalArgumentException(); - } - this.api = api; - this.mv = mv; - } - - // ------------------------------------------------------------------------- - // Parameters, annotations and non standard attributes - // ------------------------------------------------------------------------- - - /** - * Visits a parameter of this method. - * - * @param name parameter name or null if none is provided. - * @param access the parameter's access flags, only ACC_FINAL, - * ACC_SYNTHETIC or/and ACC_MANDATED are - * allowed (see {@link Opcodes}). - */ - public void visitParameter(String name, int access) { - if (api < Opcodes.ASM5) { - throw new RuntimeException(); - } - if (mv != null) { - mv.visitParameter(name, access); - } - } - - /** - * Visits the default value of this annotation interface method. - * - * @return a visitor to the visit the actual default value of this - * annotation interface method, or null if this visitor is - * not interested in visiting this default value. The 'name' - * parameters passed to the methods of this annotation visitor are - * ignored. Moreover, exacly one visit method must be called on this - * annotation visitor, followed by visitEnd. - */ - public AnnotationVisitor visitAnnotationDefault() { - if (mv != null) { - return mv.visitAnnotationDefault(); - } - return null; - } - - /** - * Visits an annotation of this method. - * - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitAnnotation(String desc, boolean visible) { - if (mv != null) { - return mv.visitAnnotation(desc, visible); - } - return null; - } - - /** - * Visits an annotation on a type in the method signature. - * - * @param typeRef a reference to the annotated type. The sort of this type - * reference must be {@link TypeReference#METHOD_TYPE_PARAMETER - * METHOD_TYPE_PARAMETER}, - * {@link TypeReference#METHOD_TYPE_PARAMETER_BOUND - * METHOD_TYPE_PARAMETER_BOUND}, - * {@link TypeReference#METHOD_RETURN METHOD_RETURN}, - * {@link TypeReference#METHOD_RECEIVER METHOD_RECEIVER}, - * {@link TypeReference#METHOD_FORMAL_PARAMETER - * METHOD_FORMAL_PARAMETER} or {@link TypeReference#THROWS - * THROWS}. See {@link TypeReference}. - * @param typePath the path to the annotated type argument, wildcard bound, array - * element type, or static inner type within 'typeRef'. May be - * null if the annotation targets 'typeRef' as a whole. - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitTypeAnnotation(int typeRef, - TypePath typePath, String desc, boolean visible) { - if (api < Opcodes.ASM5) { - throw new RuntimeException(); - } - if (mv != null) { - return mv.visitTypeAnnotation(typeRef, typePath, desc, visible); - } - return null; - } - - /** - * Visits an annotation of a parameter this method. - * - * @param parameter the parameter index. - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitParameterAnnotation(int parameter, - String desc, boolean visible) { - if (mv != null) { - return mv.visitParameterAnnotation(parameter, desc, visible); - } - return null; - } - - /** - * Visits a non standard attribute of this method. - * - * @param attr an attribute. - */ - public void visitAttribute(Attribute attr) { - if (mv != null) { - mv.visitAttribute(attr); - } - } - - /** - * Starts the visit of the method's code, if any (i.e. non abstract method). - */ - public void visitCode() { - if (mv != null) { - mv.visitCode(); - } - } - - /** - * Visits the current state of the local variables and operand stack - * elements. This method must(*) be called just before any - * instruction i that follows an unconditional branch instruction - * such as GOTO or THROW, that is the target of a jump instruction, or that - * starts an exception handler block. The visited types must describe the - * values of the local variables and of the operand stack elements just - * before i is executed.
- *
- * (*) this is mandatory only for classes whose version is greater than or - * equal to {@link Opcodes#V1_6 V1_6}.
- *
- * The frames of a method must be given either in expanded form, or in - * compressed form (all frames must use the same format, i.e. you must not - * mix expanded and compressed frames within a single method): - *

    - *
  • In expanded form, all frames must have the F_NEW type.
    • - *
  • In compressed form, frames are basically "deltas" from the state of - * the previous frame: - *
      - *
    • {@link Opcodes#F_SAME} representing frame with exactly the same - * locals as the previous frame and with the empty stack.
      • - *
    • {@link Opcodes#F_SAME1} representing frame with exactly the same - * locals as the previous frame and with single value on the stack ( - * nStack is 1 and stack[0] contains value for the - * type of the stack item).
      • - *
    • {@link Opcodes#F_APPEND} representing frame with current locals are - * the same as the locals in the previous frame, except that additional - * locals are defined (nLocal is 1, 2 or 3 and - * local elements contains values representing added types).
      • - *
    • {@link Opcodes#F_CHOP} representing frame with current locals are the - * same as the locals in the previous frame, except that the last 1-3 locals - * are absent and with the empty stack (nLocals is 1, 2 or 3).
      • - *
    • {@link Opcodes#F_FULL} representing complete frame data.
      • - *
    - *
    • - *
- *
- * In both cases the first frame, corresponding to the method's parameters - * and access flags, is implicit and must not be visited. Also, it is - * illegal to visit two or more frames for the same code location (i.e., at - * least one instruction must be visited between two calls to visitFrame). - * - * @param type the type of this stack map frame. Must be - * {@link Opcodes#F_NEW} for expanded frames, or - * {@link Opcodes#F_FULL}, {@link Opcodes#F_APPEND}, - * {@link Opcodes#F_CHOP}, {@link Opcodes#F_SAME} or - * {@link Opcodes#F_APPEND}, {@link Opcodes#F_SAME1} for - * compressed frames. - * @param nLocal the number of local variables in the visited frame. - * @param local the local variable types in this frame. This array must not be - * modified. Primitive types are represented by - * {@link Opcodes#TOP}, {@link Opcodes#INTEGER}, - * {@link Opcodes#FLOAT}, {@link Opcodes#LONG}, - * {@link Opcodes#DOUBLE},{@link Opcodes#NULL} or - * {@link Opcodes#UNINITIALIZED_THIS} (long and double are - * represented by a single element). Reference types are - * represented by String objects (representing internal names), - * and uninitialized types by Label objects (this label - * designates the NEW instruction that created this uninitialized - * value). - * @param nStack the number of operand stack elements in the visited frame. - * @param stack the operand stack types in this frame. This array must not be - * modified. Its content has the same format as the "local" - * array. - * @throws IllegalStateException if a frame is visited just after another one, without any - * instruction between the two (unless this frame is a - * Opcodes#F_SAME frame, in which case it is silently ignored). - */ - public void visitFrame(int type, int nLocal, Object[] local, int nStack, - Object[] stack) { - if (mv != null) { - mv.visitFrame(type, nLocal, local, nStack, stack); - } - } - - // ------------------------------------------------------------------------- - // Normal instructions - // ------------------------------------------------------------------------- - - /** - * Visits a zero operand instruction. - * - * @param opcode the opcode of the instruction to be visited. This opcode is - * either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, - * ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, - * FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, - * LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, - * IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, - * SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, - * DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, - * IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, - * FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, - * IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, - * L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, - * LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN, - * DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, - * or MONITOREXIT. - */ - public void visitInsn(int opcode) { - if (mv != null) { - mv.visitInsn(opcode); - } - } - - /** - * Visits an instruction with a single int operand. - * - * @param opcode the opcode of the instruction to be visited. This opcode is - * either BIPUSH, SIPUSH or NEWARRAY. - * @param operand the operand of the instruction to be visited.
- * When opcode is BIPUSH, operand value should be between - * Byte.MIN_VALUE and Byte.MAX_VALUE.
- * When opcode is SIPUSH, operand value should be between - * Short.MIN_VALUE and Short.MAX_VALUE.
- * When opcode is NEWARRAY, operand value should be one of - * {@link Opcodes#T_BOOLEAN}, {@link Opcodes#T_CHAR}, - * {@link Opcodes#T_FLOAT}, {@link Opcodes#T_DOUBLE}, - * {@link Opcodes#T_BYTE}, {@link Opcodes#T_SHORT}, - * {@link Opcodes#T_INT} or {@link Opcodes#T_LONG}. - */ - public void visitIntInsn(int opcode, int operand) { - if (mv != null) { - mv.visitIntInsn(opcode, operand); - } - } - - /** - * Visits a local variable instruction. A local variable instruction is an - * instruction that loads or stores the value of a local variable. - * - * @param opcode the opcode of the local variable instruction to be visited. - * This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, - * ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET. - * @param var the operand of the instruction to be visited. This operand is - * the index of a local variable. - */ - public void visitVarInsn(int opcode, int var) { - if (mv != null) { - mv.visitVarInsn(opcode, var); - } - } - - /** - * Visits a type instruction. A type instruction is an instruction that - * takes the internal name of a class as parameter. - * - * @param opcode the opcode of the type instruction to be visited. This opcode - * is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF. - * @param type the operand of the instruction to be visited. This operand - * must be the internal name of an object or array class (see - * {@link Type#getInternalName() getInternalName}). - */ - public void visitTypeInsn(int opcode, String type) { - if (mv != null) { - mv.visitTypeInsn(opcode, type); - } - } - - /** - * Visits a field instruction. A field instruction is an instruction that - * loads or stores the value of a field of an object. - * - * @param opcode the opcode of the type instruction to be visited. This opcode - * is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD. - * @param owner the internal name of the field's owner class (see - * {@link Type#getInternalName() getInternalName}). - * @param name the field's name. - * @param desc the field's descriptor (see {@link Type Type}). - */ - public void visitFieldInsn(int opcode, String owner, String name, - String desc) { - if (mv != null) { - mv.visitFieldInsn(opcode, owner, name, desc); - } - } - - /** - * Visits a method instruction. A method instruction is an instruction that - * invokes a method. - * - * @param opcode the opcode of the type instruction to be visited. This opcode - * is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or - * INVOKEINTERFACE. - * @param owner the internal name of the method's owner class (see - * {@link Type#getInternalName() getInternalName}). - * @param name the method's name. - * @param desc the method's descriptor (see {@link Type Type}). - */ - @Deprecated - public void visitMethodInsn(int opcode, String owner, String name, - String desc) { - if (api >= Opcodes.ASM5) { - boolean itf = opcode == Opcodes.INVOKEINTERFACE; - visitMethodInsn(opcode, owner, name, desc, itf); - return; - } - if (mv != null) { - mv.visitMethodInsn(opcode, owner, name, desc); - } - } - - /** - * Visits a method instruction. A method instruction is an instruction that - * invokes a method. - * - * @param opcode the opcode of the type instruction to be visited. This opcode - * is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or - * INVOKEINTERFACE. - * @param owner the internal name of the method's owner class (see - * {@link Type#getInternalName() getInternalName}). - * @param name the method's name. - * @param desc the method's descriptor (see {@link Type Type}). - * @param itf if the method's owner class is an interface. - */ - public void visitMethodInsn(int opcode, String owner, String name, - String desc, boolean itf) { - if (api < Opcodes.ASM5) { - if (itf != (opcode == Opcodes.INVOKEINTERFACE)) { - throw new IllegalArgumentException( - "INVOKESPECIAL/STATIC on interfaces require ASM 5"); - } - visitMethodInsn(opcode, owner, name, desc); - return; - } - if (mv != null) { - mv.visitMethodInsn(opcode, owner, name, desc, itf); - } - } - - /** - * Visits an invokedynamic instruction. - * - * @param name the method's name. - * @param desc the method's descriptor (see {@link Type Type}). - * @param bsm the bootstrap method. - * @param bsmArgs the bootstrap method constant arguments. Each argument must be - * an {@link Integer}, {@link Float}, {@link Long}, - * {@link Double}, {@link String}, {@link Type} or {@link Handle} - * value. This method is allowed to modify the content of the - * array so a caller should expect that this array may change. - */ - public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, - Object... bsmArgs) { - if (mv != null) { - mv.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs); - } - } - - /** - * Visits a jump instruction. A jump instruction is an instruction that may - * jump to another instruction. - * - * @param opcode the opcode of the type instruction to be visited. This opcode - * is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, - * IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, - * IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL. - * @param label the operand of the instruction to be visited. This operand is - * a label that designates the instruction to which the jump - * instruction may jump. - */ - public void visitJumpInsn(int opcode, Label label) { - if (mv != null) { - mv.visitJumpInsn(opcode, label); - } - } - - /** - * Visits a label. A label designates the instruction that will be visited - * just after it. - * - * @param label a {@link Label Label} object. - */ - public void visitLabel(Label label) { - if (mv != null) { - mv.visitLabel(label); - } - } - - // ------------------------------------------------------------------------- - // Special instructions - // ------------------------------------------------------------------------- - - /** - * Visits a LDC instruction. Note that new constant types may be added in - * future versions of the Java Virtual Machine. To easily detect new - * constant types, implementations of this method should check for - * unexpected constant types, like this: - *

- * 

-     * if (cst instanceof Integer) {
-     *     // ...
-     * } else if (cst instanceof Float) {
-     *     // ...
-     * } else if (cst instanceof Long) {
-     *     // ...
-     * } else if (cst instanceof Double) {
-     *     // ...
-     * } else if (cst instanceof String) {
-     *     // ...
-     * } else if (cst instanceof Type) {
-     *     int sort = ((Type) cst).getSort();
-     *     if (sort == Type.OBJECT) {
-     *         // ...
-     *     } else if (sort == Type.ARRAY) {
-     *         // ...
-     *     } else if (sort == Type.METHOD) {
-     *         // ...
-     *     } else {
-     *         // throw an exception
-     *     }
-     * } else if (cst instanceof Handle) {
-     *     // ...
-     * } else {
-     *     // throw an exception
-     * }
-     *
- * - * @param cst the constant to be loaded on the stack. This parameter must be - * a non null {@link Integer}, a {@link Float}, a {@link Long}, a - * {@link Double}, a {@link String}, a {@link Type} of OBJECT or - * ARRAY sort for .class constants, for classes whose - * version is 49.0, a {@link Type} of METHOD sort or a - * {@link Handle} for MethodType and MethodHandle constants, for - * classes whose version is 51.0. - */ - public void visitLdcInsn(Object cst) { - if (mv != null) { - mv.visitLdcInsn(cst); - } - } - - /** - * Visits an IINC instruction. - * - * @param var index of the local variable to be incremented. - * @param increment amount to increment the local variable by. - */ - public void visitIincInsn(int var, int increment) { - if (mv != null) { - mv.visitIincInsn(var, increment); - } - } - - /** - * Visits a TABLESWITCH instruction. - * - * @param min the minimum key value. - * @param max the maximum key value. - * @param dflt beginning of the default handler block. - * @param labels beginnings of the handler blocks. labels[i] is the - * beginning of the handler block for the min + i key. - */ - public void visitTableSwitchInsn(int min, int max, Label dflt, - Label... labels) { - if (mv != null) { - mv.visitTableSwitchInsn(min, max, dflt, labels); - } - } - - /** - * Visits a LOOKUPSWITCH instruction. - * - * @param dflt beginning of the default handler block. - * @param keys the values of the keys. - * @param labels beginnings of the handler blocks. labels[i] is the - * beginning of the handler block for the keys[i] key. - */ - public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) { - if (mv != null) { - mv.visitLookupSwitchInsn(dflt, keys, labels); - } - } - - /** - * Visits a MULTIANEWARRAY instruction. - * - * @param desc an array type descriptor (see {@link Type Type}). - * @param dims number of dimensions of the array to allocate. - */ - public void visitMultiANewArrayInsn(String desc, int dims) { - if (mv != null) { - mv.visitMultiANewArrayInsn(desc, dims); - } - } - - /** - * Visits an annotation on an instruction. This method must be called just - * after the annotated instruction. It can be called several times - * for the same instruction. - * - * @param typeRef a reference to the annotated type. The sort of this type - * reference must be {@link TypeReference#INSTANCEOF INSTANCEOF}, - * {@link TypeReference#NEW NEW}, - * {@link TypeReference#CONSTRUCTOR_REFERENCE - * CONSTRUCTOR_REFERENCE}, {@link TypeReference#METHOD_REFERENCE - * METHOD_REFERENCE}, {@link TypeReference#CAST CAST}, - * {@link TypeReference#CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT - * CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT}, - * {@link TypeReference#METHOD_INVOCATION_TYPE_ARGUMENT - * METHOD_INVOCATION_TYPE_ARGUMENT}, - * {@link TypeReference#CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT - * CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT}, or - * {@link TypeReference#METHOD_REFERENCE_TYPE_ARGUMENT - * METHOD_REFERENCE_TYPE_ARGUMENT}. See {@link TypeReference}. - * @param typePath the path to the annotated type argument, wildcard bound, array - * element type, or static inner type within 'typeRef'. May be - * null if the annotation targets 'typeRef' as a whole. - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitInsnAnnotation(int typeRef, - TypePath typePath, String desc, boolean visible) { - if (api < Opcodes.ASM5) { - throw new RuntimeException(); - } - if (mv != null) { - return mv.visitInsnAnnotation(typeRef, typePath, desc, visible); - } - return null; - } - - // ------------------------------------------------------------------------- - // Exceptions table entries, debug information, max stack and max locals - // ------------------------------------------------------------------------- - - /** - * Visits a try catch block. - * - * @param start beginning of the exception handler's scope (inclusive). - * @param end end of the exception handler's scope (exclusive). - * @param handler beginning of the exception handler's code. - * @param type internal name of the type of exceptions handled by the - * handler, or null to catch any exceptions (for - * "finally" blocks). - * @throws IllegalArgumentException if one of the labels has already been visited by this visitor - * (by the {@link #visitLabel visitLabel} method). - */ - public void visitTryCatchBlock(Label start, Label end, Label handler, - String type) { - if (mv != null) { - mv.visitTryCatchBlock(start, end, handler, type); - } - } - - /** - * Visits an annotation on an exception handler type. This method must be - * called after the {@link #visitTryCatchBlock} for the annotated - * exception handler. It can be called several times for the same exception - * handler. - * - * @param typeRef a reference to the annotated type. The sort of this type - * reference must be {@link TypeReference#EXCEPTION_PARAMETER - * EXCEPTION_PARAMETER}. See {@link TypeReference}. - * @param typePath the path to the annotated type argument, wildcard bound, array - * element type, or static inner type within 'typeRef'. May be - * null if the annotation targets 'typeRef' as a whole. - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitTryCatchAnnotation(int typeRef, - TypePath typePath, String desc, boolean visible) { - if (api < Opcodes.ASM5) { - throw new RuntimeException(); - } - if (mv != null) { - return mv.visitTryCatchAnnotation(typeRef, typePath, desc, visible); - } - return null; - } - - /** - * Visits a local variable declaration. - * - * @param name the name of a local variable. - * @param desc the type descriptor of this local variable. - * @param signature the type signature of this local variable. May be - * null if the local variable type does not use generic - * types. - * @param start the first instruction corresponding to the scope of this local - * variable (inclusive). - * @param end the last instruction corresponding to the scope of this local - * variable (exclusive). - * @param index the local variable's index. - * @throws IllegalArgumentException if one of the labels has not already been visited by this - * visitor (by the {@link #visitLabel visitLabel} method). - */ - public void visitLocalVariable(String name, String desc, String signature, - Label start, Label end, int index) { - if (mv != null) { - mv.visitLocalVariable(name, desc, signature, start, end, index); - } - } - - /** - * Visits an annotation on a local variable type. - * - * @param typeRef a reference to the annotated type. The sort of this type - * reference must be {@link TypeReference#LOCAL_VARIABLE - * LOCAL_VARIABLE} or {@link TypeReference#RESOURCE_VARIABLE - * RESOURCE_VARIABLE}. See {@link TypeReference}. - * @param typePath the path to the annotated type argument, wildcard bound, array - * element type, or static inner type within 'typeRef'. May be - * null if the annotation targets 'typeRef' as a whole. - * @param start the fist instructions corresponding to the continuous ranges - * that make the scope of this local variable (inclusive). - * @param end the last instructions corresponding to the continuous ranges - * that make the scope of this local variable (exclusive). This - * array must have the same size as the 'start' array. - * @param index the local variable's index in each range. This array must have - * the same size as the 'start' array. - * @param desc the class descriptor of the annotation class. - * @param visible true if the annotation is visible at runtime. - * @return a visitor to visit the annotation values, or null if - * this visitor is not interested in visiting this annotation. - */ - public AnnotationVisitor visitLocalVariableAnnotation(int typeRef, - TypePath typePath, Label[] start, Label[] end, int[] index, - String desc, boolean visible) { - if (api < Opcodes.ASM5) { - throw new RuntimeException(); - } - if (mv != null) { - return mv.visitLocalVariableAnnotation(typeRef, typePath, start, - end, index, desc, visible); - } - return null; - } - - /** - * Visits a line number declaration. - * - * @param line a line number. This number refers to the source file from - * which the class was compiled. - * @param start the first instruction corresponding to this line number. - * @throws IllegalArgumentException if start has not already been visited by this - * visitor (by the {@link #visitLabel visitLabel} method). - */ - public void visitLineNumber(int line, Label start) { - if (mv != null) { - mv.visitLineNumber(line, start); - } - } - - /** - * Visits the maximum stack size and the maximum number of local variables - * of the method. - * - * @param maxStack maximum stack size of the method. - * @param maxLocals maximum number of local variables for the method. - */ - public void visitMaxs(int maxStack, int maxLocals) { - if (mv != null) { - mv.visitMaxs(maxStack, maxLocals); - } - } - - /** - * Visits the end of the method. This method, which is the last one to be - * called, is used to inform the visitor that all the annotations and - * attributes of the method have been visited. - */ - public void visitEnd() { - if (mv != null) { - mv.visitEnd(); - } - } -} diff --git a/src/org/objectweb/asm/MethodWriter.java b/src/org/objectweb/asm/MethodWriter.java deleted file mode 100644 index f0f576275..000000000 --- a/src/org/objectweb/asm/MethodWriter.java +++ /dev/null @@ -1,2884 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * A {@link MethodVisitor} that generates methods in bytecode form. Each visit - * method of this class appends the bytecode corresponding to the visited - * instruction to a byte vector, in the order these methods are called. - * - * @author Eric Bruneton - * @author Eugene Kuleshov - */ -class MethodWriter extends MethodVisitor { - - /** - * Pseudo access flag used to denote constructors. - */ - static final int ACC_CONSTRUCTOR = 0x80000; - - /** - * Frame has exactly the same locals as the previous stack map frame and - * number of stack items is zero. - */ - static final int SAME_FRAME = 0; // to 63 (0-3f) - - /** - * Frame has exactly the same locals as the previous stack map frame and - * number of stack items is 1 - */ - static final int SAME_LOCALS_1_STACK_ITEM_FRAME = 64; // to 127 (40-7f) - - /** - * Reserved for future use - */ - static final int RESERVED = 128; - - /** - * Frame has exactly the same locals as the previous stack map frame and - * number of stack items is 1. Offset is bigger then 63; - */ - static final int SAME_LOCALS_1_STACK_ITEM_FRAME_EXTENDED = 247; // f7 - - /** - * Frame where current locals are the same as the locals in the previous - * frame, except that the k last locals are absent. The value of k is given - * by the formula 251-frame_type. - */ - static final int CHOP_FRAME = 248; // to 250 (f8-fA) - - /** - * Frame has exactly the same locals as the previous stack map frame and - * number of stack items is zero. Offset is bigger then 63; - */ - static final int SAME_FRAME_EXTENDED = 251; // fb - - /** - * Frame where current locals are the same as the locals in the previous - * frame, except that k additional locals are defined. The value of k is - * given by the formula frame_type-251. - */ - static final int APPEND_FRAME = 252; // to 254 // fc-fe - - /** - * Full frame - */ - static final int FULL_FRAME = 255; // ff - - /** - * Indicates that the stack map frames must be recomputed from scratch. In - * this case the maximum stack size and number of local variables is also - * recomputed from scratch. - * - * @see #compute - */ - private static final int FRAMES = 0; - - /** - * Indicates that the maximum stack size and number of local variables must - * be automatically computed. - * - * @see #compute - */ - private static final int MAXS = 1; - - /** - * Indicates that nothing must be automatically computed. - * - * @see #compute - */ - private static final int NOTHING = 2; - - /** - * The class writer to which this method must be added. - */ - final ClassWriter cw; - - /** - * Access flags of this method. - */ - private int access; - - /** - * The index of the constant pool item that contains the name of this - * method. - */ - private final int name; - - /** - * The index of the constant pool item that contains the descriptor of this - * method. - */ - private final int desc; - - /** - * The descriptor of this method. - */ - private final String descriptor; - - /** - * The signature of this method. - */ - String signature; - - /** - * If not zero, indicates that the code of this method must be copied from - * the ClassReader associated to this writer in cw.cr. More - * precisely, this field gives the index of the first byte to copied from - * cw.cr.b. - */ - int classReaderOffset; - - /** - * If not zero, indicates that the code of this method must be copied from - * the ClassReader associated to this writer in cw.cr. More - * precisely, this field gives the number of bytes to copied from - * cw.cr.b. - */ - int classReaderLength; - - /** - * Number of exceptions that can be thrown by this method. - */ - int exceptionCount; - - /** - * The exceptions that can be thrown by this method. More precisely, this - * array contains the indexes of the constant pool items that contain the - * internal names of these exception classes. - */ - int[] exceptions; - - /** - * The annotation default attribute of this method. May be null. - */ - private ByteVector annd; - - /** - * The runtime visible annotations of this method. May be null. - */ - private AnnotationWriter anns; - - /** - * The runtime invisible annotations of this method. May be null. - */ - private AnnotationWriter ianns; - - /** - * The runtime visible type annotations of this method. May be null - * . - */ - private AnnotationWriter tanns; - - /** - * The runtime invisible type annotations of this method. May be - * null. - */ - private AnnotationWriter itanns; - - /** - * The runtime visible parameter annotations of this method. May be - * null. - */ - private AnnotationWriter[] panns; - - /** - * The runtime invisible parameter annotations of this method. May be - * null. - */ - private AnnotationWriter[] ipanns; - - /** - * The number of synthetic parameters of this method. - */ - private int synthetics; - - /** - * The non standard attributes of the method. - */ - private Attribute attrs; - - /** - * The bytecode of this method. - */ - private ByteVector code = new ByteVector(); - - /** - * Maximum stack size of this method. - */ - private int maxStack; - - /** - * Maximum number of local variables for this method. - */ - private int maxLocals; - - /** - * Number of local variables in the current stack map frame. - */ - private int currentLocals; - - /** - * Number of stack map frames in the StackMapTable attribute. - */ - private int frameCount; - - /** - * The StackMapTable attribute. - */ - private ByteVector stackMap; - - /** - * The offset of the last frame that was written in the StackMapTable - * attribute. - */ - private int previousFrameOffset; - - /** - * The last frame that was written in the StackMapTable attribute. - * - * @see #frame - */ - private int[] previousFrame; - - /** - * The current stack map frame. The first element contains the offset of the - * instruction to which the frame corresponds, the second element is the - * number of locals and the third one is the number of stack elements. The - * local variables start at index 3 and are followed by the operand stack - * values. In summary frame[0] = offset, frame[1] = nLocal, frame[2] = - * nStack, frame[3] = nLocal. All types are encoded as integers, with the - * same format as the one used in {@link Label}, but limited to BASE types. - */ - private int[] frame; - - /** - * Number of elements in the exception handler list. - */ - private int handlerCount; - - /** - * The first element in the exception handler list. - */ - private Handler firstHandler; - - /** - * The last element in the exception handler list. - */ - private Handler lastHandler; - - /** - * Number of entries in the MethodParameters attribute. - */ - private int methodParametersCount; - - /** - * The MethodParameters attribute. - */ - private ByteVector methodParameters; - - /** - * Number of entries in the LocalVariableTable attribute. - */ - private int localVarCount; - - /** - * The LocalVariableTable attribute. - */ - private ByteVector localVar; - - /** - * Number of entries in the LocalVariableTypeTable attribute. - */ - private int localVarTypeCount; - - /** - * The LocalVariableTypeTable attribute. - */ - private ByteVector localVarType; - - /** - * Number of entries in the LineNumberTable attribute. - */ - private int lineNumberCount; - - /** - * The LineNumberTable attribute. - */ - private ByteVector lineNumber; - - /** - * The start offset of the last visited instruction. - */ - private int lastCodeOffset; - - /** - * The runtime visible type annotations of the code. May be null. - */ - private AnnotationWriter ctanns; - - /** - * The runtime invisible type annotations of the code. May be null. - */ - private AnnotationWriter ictanns; - - /** - * The non standard attributes of the method's code. - */ - private Attribute cattrs; - - /** - * Indicates if some jump instructions are too small and need to be resized. - */ - private boolean resize; - - /** - * The number of subroutines in this method. - */ - private int subroutines; - - // ------------------------------------------------------------------------ - - /* - * Fields for the control flow graph analysis algorithm (used to compute the - * maximum stack size). A control flow graph contains one node per "basic - * block", and one edge per "jump" from one basic block to another. Each - * node (i.e., each basic block) is represented by the Label object that - * corresponds to the first instruction of this basic block. Each node also - * stores the list of its successors in the graph, as a linked list of Edge - * objects. - */ - - /** - * Indicates what must be automatically computed. - * - * @see #FRAMES - * @see #MAXS - * @see #NOTHING - */ - private final int compute; - - /** - * A list of labels. This list is the list of basic blocks in the method, - * i.e. a list of Label objects linked to each other by their - * {@link Label#successor} field, in the order they are visited by - * {@link MethodVisitor#visitLabel}, and starting with the first basic - * block. - */ - private Label labels; - - /** - * The previous basic block. - */ - private Label previousBlock; - - /** - * The current basic block. - */ - private Label currentBlock; - - /** - * The (relative) stack size after the last visited instruction. This size - * is relative to the beginning of the current basic block, i.e., the true - * stack size after the last visited instruction is equal to the - * {@link Label#inputStackTop beginStackSize} of the current basic block - * plus stackSize. - */ - private int stackSize; - - /** - * The (relative) maximum stack size after the last visited instruction. - * This size is relative to the beginning of the current basic block, i.e., - * the true maximum stack size after the last visited instruction is equal - * to the {@link Label#inputStackTop beginStackSize} of the current basic - * block plus stackSize. - */ - private int maxStackSize; - - // ------------------------------------------------------------------------ - // Constructor - // ------------------------------------------------------------------------ - - /** - * Constructs a new {@link MethodWriter}. - * - * @param cw the class writer in which the method must be added. - * @param access the method's access flags (see {@link Opcodes}). - * @param name the method's name. - * @param desc the method's descriptor (see {@link Type}). - * @param signature the method's signature. May be null. - * @param exceptions the internal names of the method's exceptions. May be - * null. - * @param computeMaxs true if the maximum stack size and number of local - * variables must be automatically computed. - * @param computeFrames true if the stack map tables must be recomputed from - * scratch. - */ - MethodWriter(final ClassWriter cw, final int access, final String name, - final String desc, final String signature, - final String[] exceptions, final boolean computeMaxs, - final boolean computeFrames) { - super(Opcodes.ASM5); - if (cw.firstMethod == null) { - cw.firstMethod = this; - } else { - cw.lastMethod.mv = this; - } - cw.lastMethod = this; - this.cw = cw; - this.access = access; - if ("".equals(name)) { - this.access |= ACC_CONSTRUCTOR; - } - this.name = cw.newUTF8(name); - this.desc = cw.newUTF8(desc); - this.descriptor = desc; - if (ClassReader.SIGNATURES) { - this.signature = signature; - } - if (exceptions != null && exceptions.length > 0) { - exceptionCount = exceptions.length; - this.exceptions = new int[exceptionCount]; - for (int i = 0; i < exceptionCount; ++i) { - this.exceptions[i] = cw.newClass(exceptions[i]); - } - } - this.compute = computeFrames ? FRAMES : (computeMaxs ? MAXS : NOTHING); - if (computeMaxs || computeFrames) { - // updates maxLocals - int size = Type.getArgumentsAndReturnSizes(descriptor) >> 2; - if ((access & Opcodes.ACC_STATIC) != 0) { - --size; - } - maxLocals = size; - currentLocals = size; - // creates and visits the label for the first basic block - labels = new Label(); - labels.status |= Label.PUSHED; - visitLabel(labels); - } - } - - // ------------------------------------------------------------------------ - // Implementation of the MethodVisitor abstract class - // ------------------------------------------------------------------------ - - @Override - public void visitParameter(String name, int access) { - if (methodParameters == null) { - methodParameters = new ByteVector(); - } - ++methodParametersCount; - methodParameters.putShort((name == null) ? 0 : cw.newUTF8(name)) - .putShort(access); - } - - @Override - public AnnotationVisitor visitAnnotationDefault() { - if (!ClassReader.ANNOTATIONS) { - return null; - } - annd = new ByteVector(); - return new AnnotationWriter(cw, false, annd, null, 0); - } - - @Override - public AnnotationVisitor visitAnnotation(final String desc, - final boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, 2); - if (visible) { - aw.next = anns; - anns = aw; - } else { - aw.next = ianns; - ianns = aw; - } - return aw; - } - - @Override - public AnnotationVisitor visitTypeAnnotation(final int typeRef, - final TypePath typePath, final String desc, final boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write target_type and target_info - AnnotationWriter.putTarget(typeRef, typePath, bv); - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, - bv.length - 2); - if (visible) { - aw.next = tanns; - tanns = aw; - } else { - aw.next = itanns; - itanns = aw; - } - return aw; - } - - @Override - public AnnotationVisitor visitParameterAnnotation(final int parameter, - final String desc, final boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - if ("Ljava/lang/Synthetic;".equals(desc)) { - // workaround for a bug in javac with synthetic parameters - // see ClassReader.readParameterAnnotations - synthetics = Math.max(synthetics, parameter + 1); - return new AnnotationWriter(cw, false, bv, null, 0); - } - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, 2); - if (visible) { - if (panns == null) { - panns = new AnnotationWriter[Type.getArgumentTypes(descriptor).length]; - } - aw.next = panns[parameter]; - panns[parameter] = aw; - } else { - if (ipanns == null) { - ipanns = new AnnotationWriter[Type.getArgumentTypes(descriptor).length]; - } - aw.next = ipanns[parameter]; - ipanns[parameter] = aw; - } - return aw; - } - - @Override - public void visitAttribute(final Attribute attr) { - if (attr.isCodeAttribute()) { - attr.next = cattrs; - cattrs = attr; - } else { - attr.next = attrs; - attrs = attr; - } - } - - @Override - public void visitCode() { - } - - @Override - public void visitFrame(final int type, final int nLocal, - final Object[] local, final int nStack, final Object[] stack) { - if (!ClassReader.FRAMES || compute == FRAMES) { - return; - } - - if (type == Opcodes.F_NEW) { - if (previousFrame == null) { - visitImplicitFirstFrame(); - } - currentLocals = nLocal; - int frameIndex = startFrame(code.length, nLocal, nStack); - for (int i = 0; i < nLocal; ++i) { - if (local[i] instanceof String) { - frame[frameIndex++] = Frame.OBJECT - | cw.addType((String) local[i]); - } else if (local[i] instanceof Integer) { - frame[frameIndex++] = ((Integer) local[i]).intValue(); - } else { - frame[frameIndex++] = Frame.UNINITIALIZED - | cw.addUninitializedType("", - ((Label) local[i]).position); - } - } - for (int i = 0; i < nStack; ++i) { - if (stack[i] instanceof String) { - frame[frameIndex++] = Frame.OBJECT - | cw.addType((String) stack[i]); - } else if (stack[i] instanceof Integer) { - frame[frameIndex++] = ((Integer) stack[i]).intValue(); - } else { - frame[frameIndex++] = Frame.UNINITIALIZED - | cw.addUninitializedType("", - ((Label) stack[i]).position); - } - } - endFrame(); - } else { - int delta; - if (stackMap == null) { - stackMap = new ByteVector(); - delta = code.length; - } else { - delta = code.length - previousFrameOffset - 1; - if (delta < 0) { - if (type == Opcodes.F_SAME) { - return; - } else { - throw new IllegalStateException(); - } - } - } - - switch (type) { - case Opcodes.F_FULL: - currentLocals = nLocal; - stackMap.putByte(FULL_FRAME).putShort(delta).putShort(nLocal); - for (int i = 0; i < nLocal; ++i) { - writeFrameType(local[i]); - } - stackMap.putShort(nStack); - for (int i = 0; i < nStack; ++i) { - writeFrameType(stack[i]); - } - break; - case Opcodes.F_APPEND: - currentLocals += nLocal; - stackMap.putByte(SAME_FRAME_EXTENDED + nLocal).putShort(delta); - for (int i = 0; i < nLocal; ++i) { - writeFrameType(local[i]); - } - break; - case Opcodes.F_CHOP: - currentLocals -= nLocal; - stackMap.putByte(SAME_FRAME_EXTENDED - nLocal).putShort(delta); - break; - case Opcodes.F_SAME: - if (delta < 64) { - stackMap.putByte(delta); - } else { - stackMap.putByte(SAME_FRAME_EXTENDED).putShort(delta); - } - break; - case Opcodes.F_SAME1: - if (delta < 64) { - stackMap.putByte(SAME_LOCALS_1_STACK_ITEM_FRAME + delta); - } else { - stackMap.putByte(SAME_LOCALS_1_STACK_ITEM_FRAME_EXTENDED) - .putShort(delta); - } - writeFrameType(stack[0]); - break; - } - - previousFrameOffset = code.length; - ++frameCount; - } - - maxStack = Math.max(maxStack, nStack); - maxLocals = Math.max(maxLocals, currentLocals); - } - - @Override - public void visitInsn(final int opcode) { - lastCodeOffset = code.length; - // adds the instruction to the bytecode of the method - code.putByte(opcode); - // update currentBlock - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(opcode, 0, null, null); - } else { - // updates current and max stack sizes - int size = stackSize + Frame.SIZE[opcode]; - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - // if opcode == ATHROW or xRETURN, ends current block (no successor) - if ((opcode >= Opcodes.IRETURN && opcode <= Opcodes.RETURN) - || opcode == Opcodes.ATHROW) { - noSuccessor(); - } - } - } - - @Override - public void visitIntInsn(final int opcode, final int operand) { - lastCodeOffset = code.length; - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(opcode, operand, null, null); - } else if (opcode != Opcodes.NEWARRAY) { - // updates current and max stack sizes only for NEWARRAY - // (stack size variation = 0 for BIPUSH or SIPUSH) - int size = stackSize + 1; - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - } - // adds the instruction to the bytecode of the method - if (opcode == Opcodes.SIPUSH) { - code.put12(opcode, operand); - } else { // BIPUSH or NEWARRAY - code.put11(opcode, operand); - } - } - - @Override - public void visitVarInsn(final int opcode, final int var) { - lastCodeOffset = code.length; - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(opcode, var, null, null); - } else { - // updates current and max stack sizes - if (opcode == Opcodes.RET) { - // no stack change, but end of current block (no successor) - currentBlock.status |= Label.RET; - // save 'stackSize' here for future use - // (see {@link #findSubroutineSuccessors}) - currentBlock.inputStackTop = stackSize; - noSuccessor(); - } else { // xLOAD or xSTORE - int size = stackSize + Frame.SIZE[opcode]; - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - } - } - if (compute != NOTHING) { - // updates max locals - int n; - if (opcode == Opcodes.LLOAD || opcode == Opcodes.DLOAD - || opcode == Opcodes.LSTORE || opcode == Opcodes.DSTORE) { - n = var + 2; - } else { - n = var + 1; - } - if (n > maxLocals) { - maxLocals = n; - } - } - // adds the instruction to the bytecode of the method - if (var < 4 && opcode != Opcodes.RET) { - int opt; - if (opcode < Opcodes.ISTORE) { - /* ILOAD_0 */ - opt = 26 + ((opcode - Opcodes.ILOAD) << 2) + var; - } else { - /* ISTORE_0 */ - opt = 59 + ((opcode - Opcodes.ISTORE) << 2) + var; - } - code.putByte(opt); - } else if (var >= 256) { - code.putByte(196 /* WIDE */).put12(opcode, var); - } else { - code.put11(opcode, var); - } - if (opcode >= Opcodes.ISTORE && compute == FRAMES && handlerCount > 0) { - visitLabel(new Label()); - } - } - - @Override - public void visitTypeInsn(final int opcode, final String type) { - lastCodeOffset = code.length; - Item i = cw.newClassItem(type); - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(opcode, code.length, cw, i); - } else if (opcode == Opcodes.NEW) { - // updates current and max stack sizes only if opcode == NEW - // (no stack change for ANEWARRAY, CHECKCAST, INSTANCEOF) - int size = stackSize + 1; - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - } - // adds the instruction to the bytecode of the method - code.put12(opcode, i.index); - } - - @Override - public void visitFieldInsn(final int opcode, final String owner, - final String name, final String desc) { - lastCodeOffset = code.length; - Item i = cw.newFieldItem(owner, name, desc); - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(opcode, 0, cw, i); - } else { - int size; - // computes the stack size variation - char c = desc.charAt(0); - switch (opcode) { - case Opcodes.GETSTATIC: - size = stackSize + (c == 'D' || c == 'J' ? 2 : 1); - break; - case Opcodes.PUTSTATIC: - size = stackSize + (c == 'D' || c == 'J' ? -2 : -1); - break; - case Opcodes.GETFIELD: - size = stackSize + (c == 'D' || c == 'J' ? 1 : 0); - break; - // case Constants.PUTFIELD: - default: - size = stackSize + (c == 'D' || c == 'J' ? -3 : -2); - break; - } - // updates current and max stack sizes - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - } - // adds the instruction to the bytecode of the method - code.put12(opcode, i.index); - } - - @Override - public void visitMethodInsn(final int opcode, final String owner, - final String name, final String desc, final boolean itf) { - lastCodeOffset = code.length; - Item i = cw.newMethodItem(owner, name, desc, itf); - int argSize = i.intVal; - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(opcode, 0, cw, i); - } else { - /* - * computes the stack size variation. In order not to recompute - * several times this variation for the same Item, we use the - * intVal field of this item to store this variation, once it - * has been computed. More precisely this intVal field stores - * the sizes of the arguments and of the return value - * corresponding to desc. - */ - if (argSize == 0) { - // the above sizes have not been computed yet, - // so we compute them... - argSize = Type.getArgumentsAndReturnSizes(desc); - // ... and we save them in order - // not to recompute them in the future - i.intVal = argSize; - } - int size; - if (opcode == Opcodes.INVOKESTATIC) { - size = stackSize - (argSize >> 2) + (argSize & 0x03) + 1; - } else { - size = stackSize - (argSize >> 2) + (argSize & 0x03); - } - // updates current and max stack sizes - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - } - // adds the instruction to the bytecode of the method - if (opcode == Opcodes.INVOKEINTERFACE) { - if (argSize == 0) { - argSize = Type.getArgumentsAndReturnSizes(desc); - i.intVal = argSize; - } - code.put12(Opcodes.INVOKEINTERFACE, i.index).put11(argSize >> 2, 0); - } else { - code.put12(opcode, i.index); - } - } - - @Override - public void visitInvokeDynamicInsn(final String name, final String desc, - final Handle bsm, final Object... bsmArgs) { - lastCodeOffset = code.length; - Item i = cw.newInvokeDynamicItem(name, desc, bsm, bsmArgs); - int argSize = i.intVal; - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(Opcodes.INVOKEDYNAMIC, 0, cw, i); - } else { - /* - * computes the stack size variation. In order not to recompute - * several times this variation for the same Item, we use the - * intVal field of this item to store this variation, once it - * has been computed. More precisely this intVal field stores - * the sizes of the arguments and of the return value - * corresponding to desc. - */ - if (argSize == 0) { - // the above sizes have not been computed yet, - // so we compute them... - argSize = Type.getArgumentsAndReturnSizes(desc); - // ... and we save them in order - // not to recompute them in the future - i.intVal = argSize; - } - int size = stackSize - (argSize >> 2) + (argSize & 0x03) + 1; - - // updates current and max stack sizes - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - } - // adds the instruction to the bytecode of the method - code.put12(Opcodes.INVOKEDYNAMIC, i.index); - code.putShort(0); - } - - @Override - public void visitJumpInsn(final int opcode, final Label label) { - lastCodeOffset = code.length; - Label nextInsn = null; - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(opcode, 0, null, null); - // 'label' is the target of a jump instruction - label.getFirst().status |= Label.TARGET; - // adds 'label' as a successor of this basic block - addSuccessor(Edge.NORMAL, label); - if (opcode != Opcodes.GOTO) { - // creates a Label for the next basic block - nextInsn = new Label(); - } - } else { - if (opcode == Opcodes.JSR) { - if ((label.status & Label.SUBROUTINE) == 0) { - label.status |= Label.SUBROUTINE; - ++subroutines; - } - currentBlock.status |= Label.JSR; - addSuccessor(stackSize + 1, label); - // creates a Label for the next basic block - nextInsn = new Label(); - /* - * note that, by construction in this method, a JSR block - * has at least two successors in the control flow graph: - * the first one leads the next instruction after the JSR, - * while the second one leads to the JSR target. - */ - } else { - // updates current stack size (max stack size unchanged - // because stack size variation always negative in this - // case) - stackSize += Frame.SIZE[opcode]; - addSuccessor(stackSize, label); - } - } - } - // adds the instruction to the bytecode of the method - if ((label.status & Label.RESOLVED) != 0 - && label.position - code.length < Short.MIN_VALUE) { - /* - * case of a backward jump with an offset < -32768. In this case we - * automatically replace GOTO with GOTO_W, JSR with JSR_W and IFxxx - * with IFNOTxxx GOTO_W , where IFNOTxxx is the - * "opposite" opcode of IFxxx (i.e., IFNE for IFEQ) and where - * designates the instruction just after the GOTO_W. - */ - if (opcode == Opcodes.GOTO) { - code.putByte(200); // GOTO_W - } else if (opcode == Opcodes.JSR) { - code.putByte(201); // JSR_W - } else { - // if the IF instruction is transformed into IFNOT GOTO_W the - // next instruction becomes the target of the IFNOT instruction - if (nextInsn != null) { - nextInsn.status |= Label.TARGET; - } - code.putByte(opcode <= 166 ? ((opcode + 1) ^ 1) - 1 - : opcode ^ 1); - code.putShort(8); // jump offset - code.putByte(200); // GOTO_W - } - label.put(this, code, code.length - 1, true); - } else { - /* - * case of a backward jump with an offset >= -32768, or of a forward - * jump with, of course, an unknown offset. In these cases we store - * the offset in 2 bytes (which will be increased in - * resizeInstructions, if needed). - */ - code.putByte(opcode); - label.put(this, code, code.length - 1, false); - } - if (currentBlock != null) { - if (nextInsn != null) { - // if the jump instruction is not a GOTO, the next instruction - // is also a successor of this instruction. Calling visitLabel - // adds the label of this next instruction as a successor of the - // current block, and starts a new basic block - visitLabel(nextInsn); - } - if (opcode == Opcodes.GOTO) { - noSuccessor(); - } - } - } - - @Override - public void visitLabel(final Label label) { - // resolves previous forward references to label, if any - resize |= label.resolve(this, code.length, code.data); - // updates currentBlock - if ((label.status & Label.DEBUG) != 0) { - return; - } - if (compute == FRAMES) { - if (currentBlock != null) { - if (label.position == currentBlock.position) { - // successive labels, do not start a new basic block - currentBlock.status |= (label.status & Label.TARGET); - label.frame = currentBlock.frame; - return; - } - // ends current block (with one new successor) - addSuccessor(Edge.NORMAL, label); - } - // begins a new current block - currentBlock = label; - if (label.frame == null) { - label.frame = new Frame(); - label.frame.owner = label; - } - // updates the basic block list - if (previousBlock != null) { - if (label.position == previousBlock.position) { - previousBlock.status |= (label.status & Label.TARGET); - label.frame = previousBlock.frame; - currentBlock = previousBlock; - return; - } - previousBlock.successor = label; - } - previousBlock = label; - } else if (compute == MAXS) { - if (currentBlock != null) { - // ends current block (with one new successor) - currentBlock.outputStackMax = maxStackSize; - addSuccessor(stackSize, label); - } - // begins a new current block - currentBlock = label; - // resets the relative current and max stack sizes - stackSize = 0; - maxStackSize = 0; - // updates the basic block list - if (previousBlock != null) { - previousBlock.successor = label; - } - previousBlock = label; - } - } - - @Override - public void visitLdcInsn(final Object cst) { - lastCodeOffset = code.length; - Item i = cw.newConstItem(cst); - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(Opcodes.LDC, 0, cw, i); - } else { - int size; - // computes the stack size variation - if (i.type == ClassWriter.LONG || i.type == ClassWriter.DOUBLE) { - size = stackSize + 2; - } else { - size = stackSize + 1; - } - // updates current and max stack sizes - if (size > maxStackSize) { - maxStackSize = size; - } - stackSize = size; - } - } - // adds the instruction to the bytecode of the method - int index = i.index; - if (i.type == ClassWriter.LONG || i.type == ClassWriter.DOUBLE) { - code.put12(20 /* LDC2_W */, index); - } else if (index >= 256) { - code.put12(19 /* LDC_W */, index); - } else { - code.put11(Opcodes.LDC, index); - } - } - - @Override - public void visitIincInsn(final int var, final int increment) { - lastCodeOffset = code.length; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(Opcodes.IINC, var, null, null); - } - } - if (compute != NOTHING) { - // updates max locals - int n = var + 1; - if (n > maxLocals) { - maxLocals = n; - } - } - // adds the instruction to the bytecode of the method - if ((var > 255) || (increment > 127) || (increment < -128)) { - code.putByte(196 /* WIDE */).put12(Opcodes.IINC, var) - .putShort(increment); - } else { - code.putByte(Opcodes.IINC).put11(var, increment); - } - } - - @Override - public void visitTableSwitchInsn(final int min, final int max, - final Label dflt, final Label... labels) { - lastCodeOffset = code.length; - // adds the instruction to the bytecode of the method - int source = code.length; - code.putByte(Opcodes.TABLESWITCH); - code.putByteArray(null, 0, (4 - code.length % 4) % 4); - dflt.put(this, code, source, true); - code.putInt(min).putInt(max); - for (int i = 0; i < labels.length; ++i) { - labels[i].put(this, code, source, true); - } - // updates currentBlock - visitSwitchInsn(dflt, labels); - } - - @Override - public void visitLookupSwitchInsn(final Label dflt, final int[] keys, - final Label[] labels) { - lastCodeOffset = code.length; - // adds the instruction to the bytecode of the method - int source = code.length; - code.putByte(Opcodes.LOOKUPSWITCH); - code.putByteArray(null, 0, (4 - code.length % 4) % 4); - dflt.put(this, code, source, true); - code.putInt(labels.length); - for (int i = 0; i < labels.length; ++i) { - code.putInt(keys[i]); - labels[i].put(this, code, source, true); - } - // updates currentBlock - visitSwitchInsn(dflt, labels); - } - - private void visitSwitchInsn(final Label dflt, final Label[] labels) { - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(Opcodes.LOOKUPSWITCH, 0, null, null); - // adds current block successors - addSuccessor(Edge.NORMAL, dflt); - dflt.getFirst().status |= Label.TARGET; - for (int i = 0; i < labels.length; ++i) { - addSuccessor(Edge.NORMAL, labels[i]); - labels[i].getFirst().status |= Label.TARGET; - } - } else { - // updates current stack size (max stack size unchanged) - --stackSize; - // adds current block successors - addSuccessor(stackSize, dflt); - for (int i = 0; i < labels.length; ++i) { - addSuccessor(stackSize, labels[i]); - } - } - // ends current block - noSuccessor(); - } - } - - @Override - public void visitMultiANewArrayInsn(final String desc, final int dims) { - lastCodeOffset = code.length; - Item i = cw.newClassItem(desc); - // Label currentBlock = this.currentBlock; - if (currentBlock != null) { - if (compute == FRAMES) { - currentBlock.frame.execute(Opcodes.MULTIANEWARRAY, dims, cw, i); - } else { - // updates current stack size (max stack size unchanged because - // stack size variation always negative or null) - stackSize += 1 - dims; - } - } - // adds the instruction to the bytecode of the method - code.put12(Opcodes.MULTIANEWARRAY, i.index).putByte(dims); - } - - @Override - public AnnotationVisitor visitInsnAnnotation(int typeRef, - TypePath typePath, String desc, boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write target_type and target_info - typeRef = (typeRef & 0xFF0000FF) | (lastCodeOffset << 8); - AnnotationWriter.putTarget(typeRef, typePath, bv); - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, - bv.length - 2); - if (visible) { - aw.next = ctanns; - ctanns = aw; - } else { - aw.next = ictanns; - ictanns = aw; - } - return aw; - } - - @Override - public void visitTryCatchBlock(final Label start, final Label end, - final Label handler, final String type) { - ++handlerCount; - Handler h = new Handler(); - h.start = start; - h.end = end; - h.handler = handler; - h.desc = type; - h.type = type != null ? cw.newClass(type) : 0; - if (lastHandler == null) { - firstHandler = h; - } else { - lastHandler.next = h; - } - lastHandler = h; - } - - @Override - public AnnotationVisitor visitTryCatchAnnotation(int typeRef, - TypePath typePath, String desc, boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write target_type and target_info - AnnotationWriter.putTarget(typeRef, typePath, bv); - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, - bv.length - 2); - if (visible) { - aw.next = ctanns; - ctanns = aw; - } else { - aw.next = ictanns; - ictanns = aw; - } - return aw; - } - - @Override - public void visitLocalVariable(final String name, final String desc, - final String signature, final Label start, final Label end, - final int index) { - if (signature != null) { - if (localVarType == null) { - localVarType = new ByteVector(); - } - ++localVarTypeCount; - localVarType.putShort(start.position) - .putShort(end.position - start.position) - .putShort(cw.newUTF8(name)).putShort(cw.newUTF8(signature)) - .putShort(index); - } - if (localVar == null) { - localVar = new ByteVector(); - } - ++localVarCount; - localVar.putShort(start.position) - .putShort(end.position - start.position) - .putShort(cw.newUTF8(name)).putShort(cw.newUTF8(desc)) - .putShort(index); - if (compute != NOTHING) { - // updates max locals - char c = desc.charAt(0); - int n = index + (c == 'J' || c == 'D' ? 2 : 1); - if (n > maxLocals) { - maxLocals = n; - } - } - } - - @Override - public AnnotationVisitor visitLocalVariableAnnotation(int typeRef, - TypePath typePath, Label[] start, Label[] end, int[] index, - String desc, boolean visible) { - if (!ClassReader.ANNOTATIONS) { - return null; - } - ByteVector bv = new ByteVector(); - // write target_type and target_info - bv.putByte(typeRef >>> 24).putShort(start.length); - for (int i = 0; i < start.length; ++i) { - bv.putShort(start[i].position) - .putShort(end[i].position - start[i].position) - .putShort(index[i]); - } - if (typePath == null) { - bv.putByte(0); - } else { - int length = typePath.b[typePath.offset] * 2 + 1; - bv.putByteArray(typePath.b, typePath.offset, length); - } - // write type, and reserve space for values count - bv.putShort(cw.newUTF8(desc)).putShort(0); - AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, - bv.length - 2); - if (visible) { - aw.next = ctanns; - ctanns = aw; - } else { - aw.next = ictanns; - ictanns = aw; - } - return aw; - } - - @Override - public void visitLineNumber(final int line, final Label start) { - if (lineNumber == null) { - lineNumber = new ByteVector(); - } - ++lineNumberCount; - lineNumber.putShort(start.position); - lineNumber.putShort(line); - } - - @Override - public void visitMaxs(final int maxStack, final int maxLocals) { - if (resize) { - // replaces the temporary jump opcodes introduced by Label.resolve. - if (ClassReader.RESIZE) { - resizeInstructions(); - } else { - throw new RuntimeException("Method code too large!"); - } - } - if (ClassReader.FRAMES && compute == FRAMES) { - // completes the control flow graph with exception handler blocks - Handler handler = firstHandler; - while (handler != null) { - Label l = handler.start.getFirst(); - Label h = handler.handler.getFirst(); - Label e = handler.end.getFirst(); - // computes the kind of the edges to 'h' - String t = handler.desc == null ? "java/lang/Throwable" - : handler.desc; - int kind = Frame.OBJECT | cw.addType(t); - // h is an exception handler - h.status |= Label.TARGET; - // adds 'h' as a successor of labels between 'start' and 'end' - while (l != e) { - // creates an edge to 'h' - Edge b = new Edge(); - b.info = kind; - b.successor = h; - // adds it to the successors of 'l' - b.next = l.successors; - l.successors = b; - // goes to the next label - l = l.successor; - } - handler = handler.next; - } - - - // creates and visits the first (implicit) frame - Frame f = labels.frame; - Type[] args = Type.getArgumentTypes(descriptor); - f.initInputFrame(cw, access, args, this.maxLocals); - visitFrame(f); - - /* - * fix point algorithm: mark the first basic block as 'changed' - * (i.e. put it in the 'changed' list) and, while there are changed - * basic blocks, choose one, mark it as unchanged, and update its - * successors (which can be changed in the process). - */ - int max = 0; - Label changed = labels; - while (changed != null) { - // removes a basic block from the list of changed basic blocks - Label l = changed; - changed = changed.next; - l.next = null; - f = l.frame; - // a reachable jump target must be stored in the stack map - if ((l.status & Label.TARGET) != 0) { - l.status |= Label.STORE; - } - // all visited labels are reachable, by definition - l.status |= Label.REACHABLE; - // updates the (absolute) maximum stack size - int blockMax = f.inputStack.length + l.outputStackMax; - if (blockMax > max) { - max = blockMax; - } - // updates the successors of the current basic block - Edge e = l.successors; - while (e != null) { - Label n = e.successor.getFirst(); - boolean change = f.merge(cw, n.frame, e.info); - if (change && n.next == null) { - // if n has changed and is not already in the 'changed' - // list, adds it to this list - n.next = changed; - changed = n; - } - e = e.next; - } - } - - // visits all the frames that must be stored in the stack map - Label l = labels; - while (l != null) { - f = l.frame; - if ((l.status & Label.STORE) != 0) { - visitFrame(f); - } - if ((l.status & Label.REACHABLE) == 0) { - // finds start and end of dead basic block - Label k = l.successor; - int start = l.position; - int end = (k == null ? code.length : k.position) - 1; - // if non empty basic block - if (end >= start) { - max = Math.max(max, 1); - // replaces instructions with NOP ... NOP ATHROW - for (int i = start; i < end; ++i) { - code.data[i] = Opcodes.NOP; - } - code.data[end] = (byte) Opcodes.ATHROW; - // emits a frame for this unreachable block - int frameIndex = startFrame(start, 0, 1); - frame[frameIndex] = Frame.OBJECT - | cw.addType("java/lang/Throwable"); - endFrame(); - // removes the start-end range from the exception - // handlers - firstHandler = Handler.remove(firstHandler, l, k); - } - } - l = l.successor; - } - - handler = firstHandler; - handlerCount = 0; - while (handler != null) { - handlerCount += 1; - handler = handler.next; - } - - this.maxStack = max; - } else if (compute == MAXS) { - // completes the control flow graph with exception handler blocks - Handler handler = firstHandler; - while (handler != null) { - Label l = handler.start; - Label h = handler.handler; - Label e = handler.end; - // adds 'h' as a successor of labels between 'start' and 'end' - while (l != e) { - // creates an edge to 'h' - Edge b = new Edge(); - b.info = Edge.EXCEPTION; - b.successor = h; - // adds it to the successors of 'l' - if ((l.status & Label.JSR) == 0) { - b.next = l.successors; - l.successors = b; - } else { - // if l is a JSR block, adds b after the first two edges - // to preserve the hypothesis about JSR block successors - // order (see {@link #visitJumpInsn}) - b.next = l.successors.next.next; - l.successors.next.next = b; - } - // goes to the next label - l = l.successor; - } - handler = handler.next; - } - - if (subroutines > 0) { - // completes the control flow graph with the RET successors - /* - * first step: finds the subroutines. This step determines, for - * each basic block, to which subroutine(s) it belongs. - */ - // finds the basic blocks that belong to the "main" subroutine - int id = 0; - labels.visitSubroutine(null, 1, subroutines); - // finds the basic blocks that belong to the real subroutines - Label l = labels; - while (l != null) { - if ((l.status & Label.JSR) != 0) { - // the subroutine is defined by l's TARGET, not by l - Label subroutine = l.successors.next.successor; - // if this subroutine has not been visited yet... - if ((subroutine.status & Label.VISITED) == 0) { - // ...assigns it a new id and finds its basic blocks - id += 1; - subroutine.visitSubroutine(null, (id / 32L) << 32 - | (1L << (id % 32)), subroutines); - } - } - l = l.successor; - } - // second step: finds the successors of RET blocks - l = labels; - while (l != null) { - if ((l.status & Label.JSR) != 0) { - Label L = labels; - while (L != null) { - L.status &= ~Label.VISITED2; - L = L.successor; - } - // the subroutine is defined by l's TARGET, not by l - Label subroutine = l.successors.next.successor; - subroutine.visitSubroutine(l, 0, subroutines); - } - l = l.successor; - } - } - - /* - * control flow analysis algorithm: while the block stack is not - * empty, pop a block from this stack, update the max stack size, - * compute the true (non relative) begin stack size of the - * successors of this block, and push these successors onto the - * stack (unless they have already been pushed onto the stack). - * Note: by hypothesis, the {@link Label#inputStackTop} of the - * blocks in the block stack are the true (non relative) beginning - * stack sizes of these blocks. - */ - int max = 0; - Label stack = labels; - while (stack != null) { - // pops a block from the stack - Label l = stack; - stack = stack.next; - // computes the true (non relative) max stack size of this block - int start = l.inputStackTop; - int blockMax = start + l.outputStackMax; - // updates the global max stack size - if (blockMax > max) { - max = blockMax; - } - // analyzes the successors of the block - Edge b = l.successors; - if ((l.status & Label.JSR) != 0) { - // ignores the first edge of JSR blocks (virtual successor) - b = b.next; - } - while (b != null) { - l = b.successor; - // if this successor has not already been pushed... - if ((l.status & Label.PUSHED) == 0) { - // computes its true beginning stack size... - l.inputStackTop = b.info == Edge.EXCEPTION ? 1 : start - + b.info; - // ...and pushes it onto the stack - l.status |= Label.PUSHED; - l.next = stack; - stack = l; - } - b = b.next; - } - } - this.maxStack = Math.max(maxStack, max); - } else { - this.maxStack = maxStack; - this.maxLocals = maxLocals; - } - } - - @Override - public void visitEnd() { - } - - // ------------------------------------------------------------------------ - // Utility methods: control flow analysis algorithm - // ------------------------------------------------------------------------ - - /** - * Adds a successor to the {@link #currentBlock currentBlock} block. - * - * @param info information about the control flow edge to be added. - * @param successor the successor block to be added to the current block. - */ - private void addSuccessor(final int info, final Label successor) { - // creates and initializes an Edge object... - Edge b = new Edge(); - b.info = info; - b.successor = successor; - // ...and adds it to the successor list of the currentBlock block - b.next = currentBlock.successors; - currentBlock.successors = b; - } - - /** - * Ends the current basic block. This method must be used in the case where - * the current basic block does not have any successor. - */ - private void noSuccessor() { - if (compute == FRAMES) { - Label l = new Label(); - l.frame = new Frame(); - l.frame.owner = l; - l.resolve(this, code.length, code.data); - previousBlock.successor = l; - previousBlock = l; - } else { - currentBlock.outputStackMax = maxStackSize; - } - currentBlock = null; - } - - // ------------------------------------------------------------------------ - // Utility methods: stack map frames - // ------------------------------------------------------------------------ - - /** - * Visits a frame that has been computed from scratch. - * - * @param f the frame that must be visited. - */ - private void visitFrame(final Frame f) { - int i, t; - int nTop = 0; - int nLocal = 0; - int nStack = 0; - int[] locals = f.inputLocals; - int[] stacks = f.inputStack; - // computes the number of locals (ignores TOP types that are just after - // a LONG or a DOUBLE, and all trailing TOP types) - for (i = 0; i < locals.length; ++i) { - t = locals[i]; - if (t == Frame.TOP) { - ++nTop; - } else { - nLocal += nTop + 1; - nTop = 0; - } - if (t == Frame.LONG || t == Frame.DOUBLE) { - ++i; - } - } - // computes the stack size (ignores TOP types that are just after - // a LONG or a DOUBLE) - for (i = 0; i < stacks.length; ++i) { - t = stacks[i]; - ++nStack; - if (t == Frame.LONG || t == Frame.DOUBLE) { - ++i; - } - } - // visits the frame and its content - int frameIndex = startFrame(f.owner.position, nLocal, nStack); - for (i = 0; nLocal > 0; ++i, --nLocal) { - t = locals[i]; - frame[frameIndex++] = t; - if (t == Frame.LONG || t == Frame.DOUBLE) { - ++i; - } - } - for (i = 0; i < stacks.length; ++i) { - t = stacks[i]; - frame[frameIndex++] = t; - if (t == Frame.LONG || t == Frame.DOUBLE) { - ++i; - } - } - endFrame(); - } - - /** - * Visit the implicit first frame of this method. - */ - private void visitImplicitFirstFrame() { - // There can be at most descriptor.length() + 1 locals - int frameIndex = startFrame(0, descriptor.length() + 1, 0); - if ((access & Opcodes.ACC_STATIC) == 0) { - if ((access & ACC_CONSTRUCTOR) == 0) { - frame[frameIndex++] = Frame.OBJECT | cw.addType(cw.thisName); - } else { - frame[frameIndex++] = 6; // Opcodes.UNINITIALIZED_THIS; - } - } - int i = 1; - loop: - while (true) { - int j = i; - switch (descriptor.charAt(i++)) { - case 'Z': - case 'C': - case 'B': - case 'S': - case 'I': - frame[frameIndex++] = 1; // Opcodes.INTEGER; - break; - case 'F': - frame[frameIndex++] = 2; // Opcodes.FLOAT; - break; - case 'J': - frame[frameIndex++] = 4; // Opcodes.LONG; - break; - case 'D': - frame[frameIndex++] = 3; // Opcodes.DOUBLE; - break; - case '[': - while (descriptor.charAt(i) == '[') { - ++i; - } - if (descriptor.charAt(i) == 'L') { - ++i; - while (descriptor.charAt(i) != ';') { - ++i; - } - } - frame[frameIndex++] = Frame.OBJECT - | cw.addType(descriptor.substring(j, ++i)); - break; - case 'L': - while (descriptor.charAt(i) != ';') { - ++i; - } - frame[frameIndex++] = Frame.OBJECT - | cw.addType(descriptor.substring(j + 1, i++)); - break; - default: - break loop; - } - } - frame[1] = frameIndex - 3; - endFrame(); - } - - /** - * Starts the visit of a stack map frame. - * - * @param offset the offset of the instruction to which the frame corresponds. - * @param nLocal the number of local variables in the frame. - * @param nStack the number of stack elements in the frame. - * @return the index of the next element to be written in this frame. - */ - private int startFrame(final int offset, final int nLocal, final int nStack) { - int n = 3 + nLocal + nStack; - if (frame == null || frame.length < n) { - frame = new int[n]; - } - frame[0] = offset; - frame[1] = nLocal; - frame[2] = nStack; - return 3; - } - - /** - * Checks if the visit of the current frame {@link #frame} is finished, and - * if yes, write it in the StackMapTable attribute. - */ - private void endFrame() { - if (previousFrame != null) { // do not write the first frame - if (stackMap == null) { - stackMap = new ByteVector(); - } - writeFrame(); - ++frameCount; - } - previousFrame = frame; - frame = null; - } - - /** - * Compress and writes the current frame {@link #frame} in the StackMapTable - * attribute. - */ - private void writeFrame() { - int clocalsSize = frame[1]; - int cstackSize = frame[2]; - if ((cw.version & 0xFFFF) < Opcodes.V1_6) { - stackMap.putShort(frame[0]).putShort(clocalsSize); - writeFrameTypes(3, 3 + clocalsSize); - stackMap.putShort(cstackSize); - writeFrameTypes(3 + clocalsSize, 3 + clocalsSize + cstackSize); - return; - } - int localsSize = previousFrame[1]; - int type = FULL_FRAME; - int k = 0; - int delta; - if (frameCount == 0) { - delta = frame[0]; - } else { - delta = frame[0] - previousFrame[0] - 1; - } - if (cstackSize == 0) { - k = clocalsSize - localsSize; - switch (k) { - case -3: - case -2: - case -1: - type = CHOP_FRAME; - localsSize = clocalsSize; - break; - case 0: - type = delta < 64 ? SAME_FRAME : SAME_FRAME_EXTENDED; - break; - case 1: - case 2: - case 3: - type = APPEND_FRAME; - break; - } - } else if (clocalsSize == localsSize && cstackSize == 1) { - type = delta < 63 ? SAME_LOCALS_1_STACK_ITEM_FRAME - : SAME_LOCALS_1_STACK_ITEM_FRAME_EXTENDED; - } - if (type != FULL_FRAME) { - // verify if locals are the same - int l = 3; - for (int j = 0; j < localsSize; j++) { - if (frame[l] != previousFrame[l]) { - type = FULL_FRAME; - break; - } - l++; - } - } - switch (type) { - case SAME_FRAME: - stackMap.putByte(delta); - break; - case SAME_LOCALS_1_STACK_ITEM_FRAME: - stackMap.putByte(SAME_LOCALS_1_STACK_ITEM_FRAME + delta); - writeFrameTypes(3 + clocalsSize, 4 + clocalsSize); - break; - case SAME_LOCALS_1_STACK_ITEM_FRAME_EXTENDED: - stackMap.putByte(SAME_LOCALS_1_STACK_ITEM_FRAME_EXTENDED).putShort( - delta); - writeFrameTypes(3 + clocalsSize, 4 + clocalsSize); - break; - case SAME_FRAME_EXTENDED: - stackMap.putByte(SAME_FRAME_EXTENDED).putShort(delta); - break; - case CHOP_FRAME: - stackMap.putByte(SAME_FRAME_EXTENDED + k).putShort(delta); - break; - case APPEND_FRAME: - stackMap.putByte(SAME_FRAME_EXTENDED + k).putShort(delta); - writeFrameTypes(3 + localsSize, 3 + clocalsSize); - break; - // case FULL_FRAME: - default: - stackMap.putByte(FULL_FRAME).putShort(delta).putShort(clocalsSize); - writeFrameTypes(3, 3 + clocalsSize); - stackMap.putShort(cstackSize); - writeFrameTypes(3 + clocalsSize, 3 + clocalsSize + cstackSize); - } - } - - /** - * Writes some types of the current frame {@link #frame} into the - * StackMapTableAttribute. This method converts types from the format used - * in {@link Label} to the format used in StackMapTable attributes. In - * particular, it converts type table indexes to constant pool indexes. - * - * @param start index of the first type in {@link #frame} to write. - * @param end index of last type in {@link #frame} to write (exclusive). - */ - private void writeFrameTypes(final int start, final int end) { - for (int i = start; i < end; ++i) { - int t = frame[i]; - int d = t & Frame.DIM; - if (d == 0) { - int v = t & Frame.BASE_VALUE; - switch (t & Frame.BASE_KIND) { - case Frame.OBJECT: - stackMap.putByte(7).putShort( - cw.newClass(cw.typeTable[v].strVal1)); - break; - case Frame.UNINITIALIZED: - stackMap.putByte(8).putShort(cw.typeTable[v].intVal); - break; - default: - stackMap.putByte(v); - } - } else { - StringBuilder sb = new StringBuilder(); - d >>= 28; - while (d-- > 0) { - sb.append('['); - } - if ((t & Frame.BASE_KIND) == Frame.OBJECT) { - sb.append('L'); - sb.append(cw.typeTable[t & Frame.BASE_VALUE].strVal1); - sb.append(';'); - } else { - switch (t & 0xF) { - case 1: - sb.append('I'); - break; - case 2: - sb.append('F'); - break; - case 3: - sb.append('D'); - break; - case 9: - sb.append('Z'); - break; - case 10: - sb.append('B'); - break; - case 11: - sb.append('C'); - break; - case 12: - sb.append('S'); - break; - default: - sb.append('J'); - } - } - stackMap.putByte(7).putShort(cw.newClass(sb.toString())); - } - } - } - - private void writeFrameType(final Object type) { - if (type instanceof String) { - stackMap.putByte(7).putShort(cw.newClass((String) type)); - } else if (type instanceof Integer) { - stackMap.putByte(((Integer) type).intValue()); - } else { - stackMap.putByte(8).putShort(((Label) type).position); - } - } - - // ------------------------------------------------------------------------ - // Utility methods: dump bytecode array - // ------------------------------------------------------------------------ - - /** - * Returns the size of the bytecode of this method. - * - * @return the size of the bytecode of this method. - */ - final int getSize() { - if (classReaderOffset != 0) { - return 6 + classReaderLength; - } - int size = 8; - if (code.length > 0) { - if (code.length > 65536) { - throw new RuntimeException("Method code too large!"); - } - cw.newUTF8("Code"); - size += 18 + code.length + 8 * handlerCount; - if (localVar != null) { - cw.newUTF8("LocalVariableTable"); - size += 8 + localVar.length; - } - if (localVarType != null) { - cw.newUTF8("LocalVariableTypeTable"); - size += 8 + localVarType.length; - } - if (lineNumber != null) { - cw.newUTF8("LineNumberTable"); - size += 8 + lineNumber.length; - } - if (stackMap != null) { - boolean zip = (cw.version & 0xFFFF) >= Opcodes.V1_6; - cw.newUTF8(zip ? "StackMapTable" : "StackMap"); - size += 8 + stackMap.length; - } - if (ClassReader.ANNOTATIONS && ctanns != null) { - cw.newUTF8("RuntimeVisibleTypeAnnotations"); - size += 8 + ctanns.getSize(); - } - if (ClassReader.ANNOTATIONS && ictanns != null) { - cw.newUTF8("RuntimeInvisibleTypeAnnotations"); - size += 8 + ictanns.getSize(); - } - if (cattrs != null) { - size += cattrs.getSize(cw, code.data, code.length, maxStack, - maxLocals); - } - } - if (exceptionCount > 0) { - cw.newUTF8("Exceptions"); - size += 8 + 2 * exceptionCount; - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((cw.version & 0xFFFF) < Opcodes.V1_5 - || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0) { - cw.newUTF8("Synthetic"); - size += 6; - } - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - cw.newUTF8("Deprecated"); - size += 6; - } - if (ClassReader.SIGNATURES && signature != null) { - cw.newUTF8("Signature"); - cw.newUTF8(signature); - size += 8; - } - if (methodParameters != null) { - cw.newUTF8("MethodParameters"); - size += 7 + methodParameters.length; - } - if (ClassReader.ANNOTATIONS && annd != null) { - cw.newUTF8("AnnotationDefault"); - size += 6 + annd.length; - } - if (ClassReader.ANNOTATIONS && anns != null) { - cw.newUTF8("RuntimeVisibleAnnotations"); - size += 8 + anns.getSize(); - } - if (ClassReader.ANNOTATIONS && ianns != null) { - cw.newUTF8("RuntimeInvisibleAnnotations"); - size += 8 + ianns.getSize(); - } - if (ClassReader.ANNOTATIONS && tanns != null) { - cw.newUTF8("RuntimeVisibleTypeAnnotations"); - size += 8 + tanns.getSize(); - } - if (ClassReader.ANNOTATIONS && itanns != null) { - cw.newUTF8("RuntimeInvisibleTypeAnnotations"); - size += 8 + itanns.getSize(); - } - if (ClassReader.ANNOTATIONS && panns != null) { - cw.newUTF8("RuntimeVisibleParameterAnnotations"); - size += 7 + 2 * (panns.length - synthetics); - for (int i = panns.length - 1; i >= synthetics; --i) { - size += panns[i] == null ? 0 : panns[i].getSize(); - } - } - if (ClassReader.ANNOTATIONS && ipanns != null) { - cw.newUTF8("RuntimeInvisibleParameterAnnotations"); - size += 7 + 2 * (ipanns.length - synthetics); - for (int i = ipanns.length - 1; i >= synthetics; --i) { - size += ipanns[i] == null ? 0 : ipanns[i].getSize(); - } - } - if (attrs != null) { - size += attrs.getSize(cw, null, 0, -1, -1); - } - return size; - } - - /** - * Puts the bytecode of this method in the given byte vector. - * - * @param out the byte vector into which the bytecode of this method must be - * copied. - */ - final void put(final ByteVector out) { - final int FACTOR = ClassWriter.TO_ACC_SYNTHETIC; - int mask = ACC_CONSTRUCTOR | Opcodes.ACC_DEPRECATED - | ClassWriter.ACC_SYNTHETIC_ATTRIBUTE - | ((access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) / FACTOR); - out.putShort(access & ~mask).putShort(name).putShort(desc); - if (classReaderOffset != 0) { - out.putByteArray(cw.cr.b, classReaderOffset, classReaderLength); - return; - } - int attributeCount = 0; - if (code.length > 0) { - ++attributeCount; - } - if (exceptionCount > 0) { - ++attributeCount; - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((cw.version & 0xFFFF) < Opcodes.V1_5 - || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0) { - ++attributeCount; - } - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - ++attributeCount; - } - if (ClassReader.SIGNATURES && signature != null) { - ++attributeCount; - } - if (methodParameters != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && annd != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && anns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && ianns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && tanns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && itanns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && panns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && ipanns != null) { - ++attributeCount; - } - if (attrs != null) { - attributeCount += attrs.getCount(); - } - out.putShort(attributeCount); - if (code.length > 0) { - int size = 12 + code.length + 8 * handlerCount; - if (localVar != null) { - size += 8 + localVar.length; - } - if (localVarType != null) { - size += 8 + localVarType.length; - } - if (lineNumber != null) { - size += 8 + lineNumber.length; - } - if (stackMap != null) { - size += 8 + stackMap.length; - } - if (ClassReader.ANNOTATIONS && ctanns != null) { - size += 8 + ctanns.getSize(); - } - if (ClassReader.ANNOTATIONS && ictanns != null) { - size += 8 + ictanns.getSize(); - } - if (cattrs != null) { - size += cattrs.getSize(cw, code.data, code.length, maxStack, - maxLocals); - } - out.putShort(cw.newUTF8("Code")).putInt(size); - out.putShort(maxStack).putShort(maxLocals); - out.putInt(code.length).putByteArray(code.data, 0, code.length); - out.putShort(handlerCount); - if (handlerCount > 0) { - Handler h = firstHandler; - while (h != null) { - out.putShort(h.start.position).putShort(h.end.position) - .putShort(h.handler.position).putShort(h.type); - h = h.next; - } - } - attributeCount = 0; - if (localVar != null) { - ++attributeCount; - } - if (localVarType != null) { - ++attributeCount; - } - if (lineNumber != null) { - ++attributeCount; - } - if (stackMap != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && ctanns != null) { - ++attributeCount; - } - if (ClassReader.ANNOTATIONS && ictanns != null) { - ++attributeCount; - } - if (cattrs != null) { - attributeCount += cattrs.getCount(); - } - out.putShort(attributeCount); - if (localVar != null) { - out.putShort(cw.newUTF8("LocalVariableTable")); - out.putInt(localVar.length + 2).putShort(localVarCount); - out.putByteArray(localVar.data, 0, localVar.length); - } - if (localVarType != null) { - out.putShort(cw.newUTF8("LocalVariableTypeTable")); - out.putInt(localVarType.length + 2).putShort(localVarTypeCount); - out.putByteArray(localVarType.data, 0, localVarType.length); - } - if (lineNumber != null) { - out.putShort(cw.newUTF8("LineNumberTable")); - out.putInt(lineNumber.length + 2).putShort(lineNumberCount); - out.putByteArray(lineNumber.data, 0, lineNumber.length); - } - if (stackMap != null) { - boolean zip = (cw.version & 0xFFFF) >= Opcodes.V1_6; - out.putShort(cw.newUTF8(zip ? "StackMapTable" : "StackMap")); - out.putInt(stackMap.length + 2).putShort(frameCount); - out.putByteArray(stackMap.data, 0, stackMap.length); - } - if (ClassReader.ANNOTATIONS && ctanns != null) { - out.putShort(cw.newUTF8("RuntimeVisibleTypeAnnotations")); - ctanns.put(out); - } - if (ClassReader.ANNOTATIONS && ictanns != null) { - out.putShort(cw.newUTF8("RuntimeInvisibleTypeAnnotations")); - ictanns.put(out); - } - if (cattrs != null) { - cattrs.put(cw, code.data, code.length, maxLocals, maxStack, out); - } - } - if (exceptionCount > 0) { - out.putShort(cw.newUTF8("Exceptions")).putInt( - 2 * exceptionCount + 2); - out.putShort(exceptionCount); - for (int i = 0; i < exceptionCount; ++i) { - out.putShort(exceptions[i]); - } - } - if ((access & Opcodes.ACC_SYNTHETIC) != 0) { - if ((cw.version & 0xFFFF) < Opcodes.V1_5 - || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0) { - out.putShort(cw.newUTF8("Synthetic")).putInt(0); - } - } - if ((access & Opcodes.ACC_DEPRECATED) != 0) { - out.putShort(cw.newUTF8("Deprecated")).putInt(0); - } - if (ClassReader.SIGNATURES && signature != null) { - out.putShort(cw.newUTF8("Signature")).putInt(2) - .putShort(cw.newUTF8(signature)); - } - if (methodParameters != null) { - out.putShort(cw.newUTF8("MethodParameters")); - out.putInt(methodParameters.length + 1).putByte( - methodParametersCount); - out.putByteArray(methodParameters.data, 0, methodParameters.length); - } - if (ClassReader.ANNOTATIONS && annd != null) { - out.putShort(cw.newUTF8("AnnotationDefault")); - out.putInt(annd.length); - out.putByteArray(annd.data, 0, annd.length); - } - if (ClassReader.ANNOTATIONS && anns != null) { - out.putShort(cw.newUTF8("RuntimeVisibleAnnotations")); - anns.put(out); - } - if (ClassReader.ANNOTATIONS && ianns != null) { - out.putShort(cw.newUTF8("RuntimeInvisibleAnnotations")); - ianns.put(out); - } - if (ClassReader.ANNOTATIONS && tanns != null) { - out.putShort(cw.newUTF8("RuntimeVisibleTypeAnnotations")); - tanns.put(out); - } - if (ClassReader.ANNOTATIONS && itanns != null) { - out.putShort(cw.newUTF8("RuntimeInvisibleTypeAnnotations")); - itanns.put(out); - } - if (ClassReader.ANNOTATIONS && panns != null) { - out.putShort(cw.newUTF8("RuntimeVisibleParameterAnnotations")); - AnnotationWriter.put(panns, synthetics, out); - } - if (ClassReader.ANNOTATIONS && ipanns != null) { - out.putShort(cw.newUTF8("RuntimeInvisibleParameterAnnotations")); - AnnotationWriter.put(ipanns, synthetics, out); - } - if (attrs != null) { - attrs.put(cw, null, 0, -1, -1, out); - } - } - - // ------------------------------------------------------------------------ - // Utility methods: instruction resizing (used to handle GOTO_W and JSR_W) - // ------------------------------------------------------------------------ - - /** - * Resizes and replaces the temporary instructions inserted by - * {@link Label#resolve} for wide forward jumps, while keeping jump offsets - * and instruction addresses consistent. This may require to resize other - * existing instructions, or even to introduce new instructions: for - * example, increasing the size of an instruction by 2 at the middle of a - * method can increases the offset of an IFEQ instruction from 32766 to - * 32768, in which case IFEQ 32766 must be replaced with IFNEQ 8 GOTO_W - * 32765. This, in turn, may require to increase the size of another jump - * instruction, and so on... All these operations are handled automatically - * by this method. - *

- * This method must be called after all the method that is being built - * has been visited. In particular, the {@link Label Label} objects used - * to construct the method are no longer valid after this method has been - * called. - */ - private void resizeInstructions() { - byte[] b = code.data; // bytecode of the method - int u, v, label; // indexes in b - int i, j; // loop indexes - /* - * 1st step: As explained above, resizing an instruction may require to - * resize another one, which may require to resize yet another one, and - * so on. The first step of the algorithm consists in finding all the - * instructions that need to be resized, without modifying the code. - * This is done by the following "fix point" algorithm: - * - * Parse the code to find the jump instructions whose offset will need - * more than 2 bytes to be stored (the future offset is computed from - * the current offset and from the number of bytes that will be inserted - * or removed between the source and target instructions). For each such - * instruction, adds an entry in (a copy of) the indexes and sizes - * arrays (if this has not already been done in a previous iteration!). - * - * If at least one entry has been added during the previous step, go - * back to the beginning, otherwise stop. - * - * In fact the real algorithm is complicated by the fact that the size - * of TABLESWITCH and LOOKUPSWITCH instructions depends on their - * position in the bytecode (because of padding). In order to ensure the - * convergence of the algorithm, the number of bytes to be added or - * removed from these instructions is over estimated during the previous - * loop, and computed exactly only after the loop is finished (this - * requires another pass to parse the bytecode of the method). - */ - int[] allIndexes = new int[0]; // copy of indexes - int[] allSizes = new int[0]; // copy of sizes - boolean[] resize; // instructions to be resized - int newOffset; // future offset of a jump instruction - - resize = new boolean[code.length]; - - // 3 = loop again, 2 = loop ended, 1 = last pass, 0 = done - int state = 3; - do { - if (state == 3) { - state = 2; - } - u = 0; - while (u < b.length) { - int opcode = b[u] & 0xFF; // opcode of current instruction - int insert = 0; // bytes to be added after this instruction - - switch (ClassWriter.TYPE[opcode]) { - case ClassWriter.NOARG_INSN: - case ClassWriter.IMPLVAR_INSN: - u += 1; - break; - case ClassWriter.LABEL_INSN: - if (opcode > 201) { - // converts temporary opcodes 202 to 217, 218 and - // 219 to IFEQ ... JSR (inclusive), IFNULL and - // IFNONNULL - opcode = opcode < 218 ? opcode - 49 : opcode - 20; - label = u + readUnsignedShort(b, u + 1); - } else { - label = u + readShort(b, u + 1); - } - newOffset = getNewOffset(allIndexes, allSizes, u, label); - if (newOffset < Short.MIN_VALUE - || newOffset > Short.MAX_VALUE) { - if (!resize[u]) { - if (opcode == Opcodes.GOTO || opcode == Opcodes.JSR) { - // two additional bytes will be required to - // replace this GOTO or JSR instruction with - // a GOTO_W or a JSR_W - insert = 2; - } else { - // five additional bytes will be required to - // replace this IFxxx instruction with - // IFNOTxxx GOTO_W , where IFNOTxxx - // is the "opposite" opcode of IFxxx (i.e., - // IFNE for IFEQ) and where designates - // the instruction just after the GOTO_W. - insert = 5; - } - resize[u] = true; - } - } - u += 3; - break; - case ClassWriter.LABELW_INSN: - u += 5; - break; - case ClassWriter.TABL_INSN: - if (state == 1) { - // true number of bytes to be added (or removed) - // from this instruction = (future number of padding - // bytes - current number of padding byte) - - // previously over estimated variation = - // = ((3 - newOffset%4) - (3 - u%4)) - u%4 - // = (-newOffset%4 + u%4) - u%4 - // = -(newOffset & 3) - newOffset = getNewOffset(allIndexes, allSizes, 0, u); - insert = -(newOffset & 3); - } else if (!resize[u]) { - // over estimation of the number of bytes to be - // added to this instruction = 3 - current number - // of padding bytes = 3 - (3 - u%4) = u%4 = u & 3 - insert = u & 3; - resize[u] = true; - } - // skips instruction - u = u + 4 - (u & 3); - u += 4 * (readInt(b, u + 8) - readInt(b, u + 4) + 1) + 12; - break; - case ClassWriter.LOOK_INSN: - if (state == 1) { - // like TABL_INSN - newOffset = getNewOffset(allIndexes, allSizes, 0, u); - insert = -(newOffset & 3); - } else if (!resize[u]) { - // like TABL_INSN - insert = u & 3; - resize[u] = true; - } - // skips instruction - u = u + 4 - (u & 3); - u += 8 * readInt(b, u + 4) + 8; - break; - case ClassWriter.WIDE_INSN: - opcode = b[u + 1] & 0xFF; - if (opcode == Opcodes.IINC) { - u += 6; - } else { - u += 4; - } - break; - case ClassWriter.VAR_INSN: - case ClassWriter.SBYTE_INSN: - case ClassWriter.LDC_INSN: - u += 2; - break; - case ClassWriter.SHORT_INSN: - case ClassWriter.LDCW_INSN: - case ClassWriter.FIELDORMETH_INSN: - case ClassWriter.TYPE_INSN: - case ClassWriter.IINC_INSN: - u += 3; - break; - case ClassWriter.ITFMETH_INSN: - case ClassWriter.INDYMETH_INSN: - u += 5; - break; - // case ClassWriter.MANA_INSN: - default: - u += 4; - break; - } - if (insert != 0) { - // adds a new (u, insert) entry in the allIndexes and - // allSizes arrays - int[] newIndexes = new int[allIndexes.length + 1]; - int[] newSizes = new int[allSizes.length + 1]; - System.arraycopy(allIndexes, 0, newIndexes, 0, - allIndexes.length); - System.arraycopy(allSizes, 0, newSizes, 0, allSizes.length); - newIndexes[allIndexes.length] = u; - newSizes[allSizes.length] = insert; - allIndexes = newIndexes; - allSizes = newSizes; - if (insert > 0) { - state = 3; - } - } - } - if (state < 3) { - --state; - } - } while (state != 0); - - // 2nd step: - // copies the bytecode of the method into a new bytevector, updates the - // offsets, and inserts (or removes) bytes as requested. - - ByteVector newCode = new ByteVector(code.length); - - u = 0; - while (u < code.length) { - int opcode = b[u] & 0xFF; - switch (ClassWriter.TYPE[opcode]) { - case ClassWriter.NOARG_INSN: - case ClassWriter.IMPLVAR_INSN: - newCode.putByte(opcode); - u += 1; - break; - case ClassWriter.LABEL_INSN: - if (opcode > 201) { - // changes temporary opcodes 202 to 217 (inclusive), 218 - // and 219 to IFEQ ... JSR (inclusive), IFNULL and - // IFNONNULL - opcode = opcode < 218 ? opcode - 49 : opcode - 20; - label = u + readUnsignedShort(b, u + 1); - } else { - label = u + readShort(b, u + 1); - } - newOffset = getNewOffset(allIndexes, allSizes, u, label); - if (resize[u]) { - // replaces GOTO with GOTO_W, JSR with JSR_W and IFxxx - // with IFNOTxxx GOTO_W , where IFNOTxxx is - // the "opposite" opcode of IFxxx (i.e., IFNE for IFEQ) - // and where designates the instruction just after - // the GOTO_W. - if (opcode == Opcodes.GOTO) { - newCode.putByte(200); // GOTO_W - } else if (opcode == Opcodes.JSR) { - newCode.putByte(201); // JSR_W - } else { - newCode.putByte(opcode <= 166 ? ((opcode + 1) ^ 1) - 1 - : opcode ^ 1); - newCode.putShort(8); // jump offset - newCode.putByte(200); // GOTO_W - // newOffset now computed from start of GOTO_W - newOffset -= 3; - } - newCode.putInt(newOffset); - } else { - newCode.putByte(opcode); - newCode.putShort(newOffset); - } - u += 3; - break; - case ClassWriter.LABELW_INSN: - label = u + readInt(b, u + 1); - newOffset = getNewOffset(allIndexes, allSizes, u, label); - newCode.putByte(opcode); - newCode.putInt(newOffset); - u += 5; - break; - case ClassWriter.TABL_INSN: - // skips 0 to 3 padding bytes - v = u; - u = u + 4 - (v & 3); - // reads and copies instruction - newCode.putByte(Opcodes.TABLESWITCH); - newCode.putByteArray(null, 0, (4 - newCode.length % 4) % 4); - label = v + readInt(b, u); - u += 4; - newOffset = getNewOffset(allIndexes, allSizes, v, label); - newCode.putInt(newOffset); - j = readInt(b, u); - u += 4; - newCode.putInt(j); - j = readInt(b, u) - j + 1; - u += 4; - newCode.putInt(readInt(b, u - 4)); - for (; j > 0; --j) { - label = v + readInt(b, u); - u += 4; - newOffset = getNewOffset(allIndexes, allSizes, v, label); - newCode.putInt(newOffset); - } - break; - case ClassWriter.LOOK_INSN: - // skips 0 to 3 padding bytes - v = u; - u = u + 4 - (v & 3); - // reads and copies instruction - newCode.putByte(Opcodes.LOOKUPSWITCH); - newCode.putByteArray(null, 0, (4 - newCode.length % 4) % 4); - label = v + readInt(b, u); - u += 4; - newOffset = getNewOffset(allIndexes, allSizes, v, label); - newCode.putInt(newOffset); - j = readInt(b, u); - u += 4; - newCode.putInt(j); - for (; j > 0; --j) { - newCode.putInt(readInt(b, u)); - u += 4; - label = v + readInt(b, u); - u += 4; - newOffset = getNewOffset(allIndexes, allSizes, v, label); - newCode.putInt(newOffset); - } - break; - case ClassWriter.WIDE_INSN: - opcode = b[u + 1] & 0xFF; - if (opcode == Opcodes.IINC) { - newCode.putByteArray(b, u, 6); - u += 6; - } else { - newCode.putByteArray(b, u, 4); - u += 4; - } - break; - case ClassWriter.VAR_INSN: - case ClassWriter.SBYTE_INSN: - case ClassWriter.LDC_INSN: - newCode.putByteArray(b, u, 2); - u += 2; - break; - case ClassWriter.SHORT_INSN: - case ClassWriter.LDCW_INSN: - case ClassWriter.FIELDORMETH_INSN: - case ClassWriter.TYPE_INSN: - case ClassWriter.IINC_INSN: - newCode.putByteArray(b, u, 3); - u += 3; - break; - case ClassWriter.ITFMETH_INSN: - case ClassWriter.INDYMETH_INSN: - newCode.putByteArray(b, u, 5); - u += 5; - break; - // case MANA_INSN: - default: - newCode.putByteArray(b, u, 4); - u += 4; - break; - } - } - - // updates the stack map frame labels - if (compute == FRAMES) { - Label l = labels; - while (l != null) { - /* - * Detects the labels that are just after an IF instruction that - * has been resized with the IFNOT GOTO_W pattern. These labels - * are now the target of a jump instruction (the IFNOT - * instruction). Note that we need the original label position - * here. getNewOffset must therefore never have been called for - * this label. - */ - u = l.position - 3; - if (u >= 0 && resize[u]) { - l.status |= Label.TARGET; - } - getNewOffset(allIndexes, allSizes, l); - l = l.successor; - } - // Update the offsets in the uninitialized types - if (cw.typeTable != null) { - for (i = 0; i < cw.typeTable.length; ++i) { - Item item = cw.typeTable[i]; - if (item != null && item.type == ClassWriter.TYPE_UNINIT) { - item.intVal = getNewOffset(allIndexes, allSizes, 0, - item.intVal); - } - } - } - // The stack map frames are not serialized yet, so we don't need - // to update them. They will be serialized in visitMaxs. - } else if (frameCount > 0) { - /* - * Resizing an existing stack map frame table is really hard. Not - * only the table must be parsed to update the offets, but new - * frames may be needed for jump instructions that were inserted by - * this method. And updating the offsets or inserting frames can - * change the format of the following frames, in case of packed - * frames. In practice the whole table must be recomputed. For this - * the frames are marked as potentially invalid. This will cause the - * whole class to be reread and rewritten with the COMPUTE_FRAMES - * option (see the ClassWriter.toByteArray method). This is not very - * efficient but is much easier and requires much less code than any - * other method I can think of. - */ - cw.invalidFrames = true; - } - // updates the exception handler block labels - Handler h = firstHandler; - while (h != null) { - getNewOffset(allIndexes, allSizes, h.start); - getNewOffset(allIndexes, allSizes, h.end); - getNewOffset(allIndexes, allSizes, h.handler); - h = h.next; - } - // updates the instructions addresses in the - // local var and line number tables - for (i = 0; i < 2; ++i) { - ByteVector bv = i == 0 ? localVar : localVarType; - if (bv != null) { - b = bv.data; - u = 0; - while (u < bv.length) { - label = readUnsignedShort(b, u); - newOffset = getNewOffset(allIndexes, allSizes, 0, label); - writeShort(b, u, newOffset); - label += readUnsignedShort(b, u + 2); - newOffset = getNewOffset(allIndexes, allSizes, 0, label) - - newOffset; - writeShort(b, u + 2, newOffset); - u += 10; - } - } - } - if (lineNumber != null) { - b = lineNumber.data; - u = 0; - while (u < lineNumber.length) { - writeShort( - b, - u, - getNewOffset(allIndexes, allSizes, 0, - readUnsignedShort(b, u))); - u += 4; - } - } - // updates the labels of the other attributes - Attribute attr = cattrs; - while (attr != null) { - Label[] labels = attr.getLabels(); - if (labels != null) { - for (i = labels.length - 1; i >= 0; --i) { - getNewOffset(allIndexes, allSizes, labels[i]); - } - } - attr = attr.next; - } - - // replaces old bytecodes with new ones - code = newCode; - } - - /** - * Reads an unsigned short value in the given byte array. - * - * @param b a byte array. - * @param index the start index of the value to be read. - * @return the read value. - */ - static int readUnsignedShort(final byte[] b, final int index) { - return ((b[index] & 0xFF) << 8) | (b[index + 1] & 0xFF); - } - - /** - * Reads a signed short value in the given byte array. - * - * @param b a byte array. - * @param index the start index of the value to be read. - * @return the read value. - */ - static short readShort(final byte[] b, final int index) { - return (short) (((b[index] & 0xFF) << 8) | (b[index + 1] & 0xFF)); - } - - /** - * Reads a signed int value in the given byte array. - * - * @param b a byte array. - * @param index the start index of the value to be read. - * @return the read value. - */ - static int readInt(final byte[] b, final int index) { - return ((b[index] & 0xFF) << 24) | ((b[index + 1] & 0xFF) << 16) - | ((b[index + 2] & 0xFF) << 8) | (b[index + 3] & 0xFF); - } - - /** - * Writes a short value in the given byte array. - * - * @param b a byte array. - * @param index where the first byte of the short value must be written. - * @param s the value to be written in the given byte array. - */ - static void writeShort(final byte[] b, final int index, final int s) { - b[index] = (byte) (s >>> 8); - b[index + 1] = (byte) s; - } - - /** - * Computes the future value of a bytecode offset. - *

- * Note: it is possible to have several entries for the same instruction in - * the indexes and sizes: two entries (index=a,size=b) and - * (index=a,size=b') are equivalent to a single entry (index=a,size=b+b'). - * - * @param indexes current positions of the instructions to be resized. Each - * instruction must be designated by the index of its last - * byte, plus one (or, in other words, by the index of the - * first byte of the next instruction). - * @param sizes the number of bytes to be added to the above - * instructions. More precisely, for each i < len, - * sizes[i] bytes will be added at the end of the - * instruction designated by indexes[i] or, if - * sizes[i] is negative, the last | - * sizes[i]| bytes of the instruction will be removed - * (the instruction size must not become negative or - * null). - * @param begin index of the first byte of the source instruction. - * @param end index of the first byte of the target instruction. - * @return the future value of the given bytecode offset. - */ - static int getNewOffset(final int[] indexes, final int[] sizes, - final int begin, final int end) { - int offset = end - begin; - for (int i = 0; i < indexes.length; ++i) { - if (begin < indexes[i] && indexes[i] <= end) { - // forward jump - offset += sizes[i]; - } else if (end < indexes[i] && indexes[i] <= begin) { - // backward jump - offset -= sizes[i]; - } - } - return offset; - } - - /** - * Updates the offset of the given label. - * - * @param indexes current positions of the instructions to be resized. Each - * instruction must be designated by the index of its last - * byte, plus one (or, in other words, by the index of the - * first byte of the next instruction). - * @param sizes the number of bytes to be added to the above - * instructions. More precisely, for each i < len, - * sizes[i] bytes will be added at the end of the - * instruction designated by indexes[i] or, if - * sizes[i] is negative, the last | - * sizes[i]| bytes of the instruction will be removed - * (the instruction size must not become negative or - * null). - * @param label the label whose offset must be updated. - */ - static void getNewOffset(final int[] indexes, final int[] sizes, - final Label label) { - if ((label.status & Label.RESIZED) == 0) { - label.position = getNewOffset(indexes, sizes, 0, label.position); - label.status |= Label.RESIZED; - } - } -} diff --git a/src/org/objectweb/asm/Opcodes.java b/src/org/objectweb/asm/Opcodes.java deleted file mode 100644 index ae2610a37..000000000 --- a/src/org/objectweb/asm/Opcodes.java +++ /dev/null @@ -1,361 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -/** - * Defines the JVM opcodes, access flags and array type codes. This interface - * does not define all the JVM opcodes because some opcodes are automatically - * handled. For example, the xLOAD and xSTORE opcodes are automatically replaced - * by xLOAD_n and xSTORE_n opcodes when possible. The xLOAD_n and xSTORE_n - * opcodes are therefore not defined in this interface. Likewise for LDC, - * automatically replaced by LDC_W or LDC2_W when necessary, WIDE, GOTO_W and - * JSR_W. - * - * @author Eric Bruneton - * @author Eugene Kuleshov - */ -public interface Opcodes { - - // ASM API versions - - int ASM4 = 4 << 16 | 0 << 8 | 0; - int ASM5 = 5 << 16 | 0 << 8 | 0; - - // versions - - int V1_1 = 3 << 16 | 45; - int V1_2 = 0 << 16 | 46; - int V1_3 = 0 << 16 | 47; - int V1_4 = 0 << 16 | 48; - int V1_5 = 0 << 16 | 49; - int V1_6 = 0 << 16 | 50; - int V1_7 = 0 << 16 | 51; - int V1_8 = 0 << 16 | 52; - - // access flags - - int ACC_PUBLIC = 0x0001; // class, field, method - int ACC_PRIVATE = 0x0002; // class, field, method - int ACC_PROTECTED = 0x0004; // class, field, method - int ACC_STATIC = 0x0008; // field, method - int ACC_FINAL = 0x0010; // class, field, method, parameter - int ACC_SUPER = 0x0020; // class - int ACC_SYNCHRONIZED = 0x0020; // method - int ACC_VOLATILE = 0x0040; // field - int ACC_BRIDGE = 0x0040; // method - int ACC_VARARGS = 0x0080; // method - int ACC_TRANSIENT = 0x0080; // field - int ACC_NATIVE = 0x0100; // method - int ACC_INTERFACE = 0x0200; // class - int ACC_ABSTRACT = 0x0400; // class, method - int ACC_STRICT = 0x0800; // method - int ACC_SYNTHETIC = 0x1000; // class, field, method, parameter - int ACC_ANNOTATION = 0x2000; // class - int ACC_ENUM = 0x4000; // class(?) field inner - int ACC_MANDATED = 0x8000; // parameter - - // ASM specific pseudo access flags - - int ACC_DEPRECATED = 0x20000; // class, field, method - - // types for NEWARRAY - - int T_BOOLEAN = 4; - int T_CHAR = 5; - int T_FLOAT = 6; - int T_DOUBLE = 7; - int T_BYTE = 8; - int T_SHORT = 9; - int T_INT = 10; - int T_LONG = 11; - - // tags for Handle - - int H_GETFIELD = 1; - int H_GETSTATIC = 2; - int H_PUTFIELD = 3; - int H_PUTSTATIC = 4; - int H_INVOKEVIRTUAL = 5; - int H_INVOKESTATIC = 6; - int H_INVOKESPECIAL = 7; - int H_NEWINVOKESPECIAL = 8; - int H_INVOKEINTERFACE = 9; - - // stack map frame types - - /** - * Represents an expanded frame. See {@link ClassReader#EXPAND_FRAMES}. - */ - int F_NEW = -1; - - /** - * Represents a compressed frame with complete frame data. - */ - int F_FULL = 0; - - /** - * Represents a compressed frame where locals are the same as the locals in - * the previous frame, except that additional 1-3 locals are defined, and - * with an empty stack. - */ - int F_APPEND = 1; - - /** - * Represents a compressed frame where locals are the same as the locals in - * the previous frame, except that the last 1-3 locals are absent and with - * an empty stack. - */ - int F_CHOP = 2; - - /** - * Represents a compressed frame with exactly the same locals as the - * previous frame and with an empty stack. - */ - int F_SAME = 3; - - /** - * Represents a compressed frame with exactly the same locals as the - * previous frame and with a single value on the stack. - */ - int F_SAME1 = 4; - - Integer TOP = new Integer(0); - Integer INTEGER = new Integer(1); - Integer FLOAT = new Integer(2); - Integer DOUBLE = new Integer(3); - Integer LONG = new Integer(4); - Integer NULL = new Integer(5); - Integer UNINITIALIZED_THIS = new Integer(6); - - // opcodes // visit method (- = idem) - - int NOP = 0; // visitInsn - int ACONST_NULL = 1; // - - int ICONST_M1 = 2; // - - int ICONST_0 = 3; // - - int ICONST_1 = 4; // - - int ICONST_2 = 5; // - - int ICONST_3 = 6; // - - int ICONST_4 = 7; // - - int ICONST_5 = 8; // - - int LCONST_0 = 9; // - - int LCONST_1 = 10; // - - int FCONST_0 = 11; // - - int FCONST_1 = 12; // - - int FCONST_2 = 13; // - - int DCONST_0 = 14; // - - int DCONST_1 = 15; // - - int BIPUSH = 16; // visitIntInsn - int SIPUSH = 17; // - - int LDC = 18; // visitLdcInsn - // int LDC_W = 19; // - - // int LDC2_W = 20; // - - int ILOAD = 21; // visitVarInsn - int LLOAD = 22; // - - int FLOAD = 23; // - - int DLOAD = 24; // - - int ALOAD = 25; // - - // int ILOAD_0 = 26; // - - // int ILOAD_1 = 27; // - - // int ILOAD_2 = 28; // - - // int ILOAD_3 = 29; // - - // int LLOAD_0 = 30; // - - // int LLOAD_1 = 31; // - - // int LLOAD_2 = 32; // - - // int LLOAD_3 = 33; // - - // int FLOAD_0 = 34; // - - // int FLOAD_1 = 35; // - - // int FLOAD_2 = 36; // - - // int FLOAD_3 = 37; // - - // int DLOAD_0 = 38; // - - // int DLOAD_1 = 39; // - - // int DLOAD_2 = 40; // - - // int DLOAD_3 = 41; // - - // int ALOAD_0 = 42; // - - // int ALOAD_1 = 43; // - - // int ALOAD_2 = 44; // - - // int ALOAD_3 = 45; // - - int IALOAD = 46; // visitInsn - int LALOAD = 47; // - - int FALOAD = 48; // - - int DALOAD = 49; // - - int AALOAD = 50; // - - int BALOAD = 51; // - - int CALOAD = 52; // - - int SALOAD = 53; // - - int ISTORE = 54; // visitVarInsn - int LSTORE = 55; // - - int FSTORE = 56; // - - int DSTORE = 57; // - - int ASTORE = 58; // - - // int ISTORE_0 = 59; // - - // int ISTORE_1 = 60; // - - // int ISTORE_2 = 61; // - - // int ISTORE_3 = 62; // - - // int LSTORE_0 = 63; // - - // int LSTORE_1 = 64; // - - // int LSTORE_2 = 65; // - - // int LSTORE_3 = 66; // - - // int FSTORE_0 = 67; // - - // int FSTORE_1 = 68; // - - // int FSTORE_2 = 69; // - - // int FSTORE_3 = 70; // - - // int DSTORE_0 = 71; // - - // int DSTORE_1 = 72; // - - // int DSTORE_2 = 73; // - - // int DSTORE_3 = 74; // - - // int ASTORE_0 = 75; // - - // int ASTORE_1 = 76; // - - // int ASTORE_2 = 77; // - - // int ASTORE_3 = 78; // - - int IASTORE = 79; // visitInsn - int LASTORE = 80; // - - int FASTORE = 81; // - - int DASTORE = 82; // - - int AASTORE = 83; // - - int BASTORE = 84; // - - int CASTORE = 85; // - - int SASTORE = 86; // - - int POP = 87; // - - int POP2 = 88; // - - int DUP = 89; // - - int DUP_X1 = 90; // - - int DUP_X2 = 91; // - - int DUP2 = 92; // - - int DUP2_X1 = 93; // - - int DUP2_X2 = 94; // - - int SWAP = 95; // - - int IADD = 96; // - - int LADD = 97; // - - int FADD = 98; // - - int DADD = 99; // - - int ISUB = 100; // - - int LSUB = 101; // - - int FSUB = 102; // - - int DSUB = 103; // - - int IMUL = 104; // - - int LMUL = 105; // - - int FMUL = 106; // - - int DMUL = 107; // - - int IDIV = 108; // - - int LDIV = 109; // - - int FDIV = 110; // - - int DDIV = 111; // - - int IREM = 112; // - - int LREM = 113; // - - int FREM = 114; // - - int DREM = 115; // - - int INEG = 116; // - - int LNEG = 117; // - - int FNEG = 118; // - - int DNEG = 119; // - - int ISHL = 120; // - - int LSHL = 121; // - - int ISHR = 122; // - - int LSHR = 123; // - - int IUSHR = 124; // - - int LUSHR = 125; // - - int IAND = 126; // - - int LAND = 127; // - - int IOR = 128; // - - int LOR = 129; // - - int IXOR = 130; // - - int LXOR = 131; // - - int IINC = 132; // visitIincInsn - int I2L = 133; // visitInsn - int I2F = 134; // - - int I2D = 135; // - - int L2I = 136; // - - int L2F = 137; // - - int L2D = 138; // - - int F2I = 139; // - - int F2L = 140; // - - int F2D = 141; // - - int D2I = 142; // - - int D2L = 143; // - - int D2F = 144; // - - int I2B = 145; // - - int I2C = 146; // - - int I2S = 147; // - - int LCMP = 148; // - - int FCMPL = 149; // - - int FCMPG = 150; // - - int DCMPL = 151; // - - int DCMPG = 152; // - - int IFEQ = 153; // visitJumpInsn - int IFNE = 154; // - - int IFLT = 155; // - - int IFGE = 156; // - - int IFGT = 157; // - - int IFLE = 158; // - - int IF_ICMPEQ = 159; // - - int IF_ICMPNE = 160; // - - int IF_ICMPLT = 161; // - - int IF_ICMPGE = 162; // - - int IF_ICMPGT = 163; // - - int IF_ICMPLE = 164; // - - int IF_ACMPEQ = 165; // - - int IF_ACMPNE = 166; // - - int GOTO = 167; // - - int JSR = 168; // - - int RET = 169; // visitVarInsn - int TABLESWITCH = 170; // visiTableSwitchInsn - int LOOKUPSWITCH = 171; // visitLookupSwitch - int IRETURN = 172; // visitInsn - int LRETURN = 173; // - - int FRETURN = 174; // - - int DRETURN = 175; // - - int ARETURN = 176; // - - int RETURN = 177; // - - int GETSTATIC = 178; // visitFieldInsn - int PUTSTATIC = 179; // - - int GETFIELD = 180; // - - int PUTFIELD = 181; // - - int INVOKEVIRTUAL = 182; // visitMethodInsn - int INVOKESPECIAL = 183; // - - int INVOKESTATIC = 184; // - - int INVOKEINTERFACE = 185; // - - int INVOKEDYNAMIC = 186; // visitInvokeDynamicInsn - int NEW = 187; // visitTypeInsn - int NEWARRAY = 188; // visitIntInsn - int ANEWARRAY = 189; // visitTypeInsn - int ARRAYLENGTH = 190; // visitInsn - int ATHROW = 191; // - - int CHECKCAST = 192; // visitTypeInsn - int INSTANCEOF = 193; // - - int MONITORENTER = 194; // visitInsn - int MONITOREXIT = 195; // - - // int WIDE = 196; // NOT VISITED - int MULTIANEWARRAY = 197; // visitMultiANewArrayInsn - int IFNULL = 198; // visitJumpInsn - int IFNONNULL = 199; // - - // int GOTO_W = 200; // - - // int JSR_W = 201; // - -} diff --git a/src/org/objectweb/asm/Type.java b/src/org/objectweb/asm/Type.java deleted file mode 100644 index 599ed1128..000000000 --- a/src/org/objectweb/asm/Type.java +++ /dev/null @@ -1,878 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm; - -import java.lang.reflect.Constructor; -import java.lang.reflect.Method; - -/** - * A Java field or method type. This class can be used to make it easier to - * manipulate type and method descriptors. - * - * @author Eric Bruneton - * @author Chris Nokleberg - */ -public class Type { - - /** - * The sort of the void type. See {@link #getSort getSort}. - */ - public static final int VOID = 0; - - /** - * The sort of the boolean type. See {@link #getSort getSort}. - */ - public static final int BOOLEAN = 1; - - /** - * The sort of the char type. See {@link #getSort getSort}. - */ - public static final int CHAR = 2; - - /** - * The sort of the byte type. See {@link #getSort getSort}. - */ - public static final int BYTE = 3; - - /** - * The sort of the short type. See {@link #getSort getSort}. - */ - public static final int SHORT = 4; - - /** - * The sort of the int type. See {@link #getSort getSort}. - */ - public static final int INT = 5; - - /** - * The sort of the float type. See {@link #getSort getSort}. - */ - public static final int FLOAT = 6; - - /** - * The sort of the long type. See {@link #getSort getSort}. - */ - public static final int LONG = 7; - - /** - * The sort of the double type. See {@link #getSort getSort}. - */ - public static final int DOUBLE = 8; - - /** - * The sort of array reference types. See {@link #getSort getSort}. - */ - public static final int ARRAY = 9; - - /** - * The sort of object reference types. See {@link #getSort getSort}. - */ - public static final int OBJECT = 10; - - /** - * The sort of method types. See {@link #getSort getSort}. - */ - public static final int METHOD = 11; - - /** - * The void type. - */ - public static final Type VOID_TYPE = new Type(VOID, null, ('V' << 24) - | (5 << 16) | (0 << 8) | 0, 1); - - /** - * The boolean type. - */ - public static final Type BOOLEAN_TYPE = new Type(BOOLEAN, null, ('Z' << 24) - | (0 << 16) | (5 << 8) | 1, 1); - - /** - * The char type. - */ - public static final Type CHAR_TYPE = new Type(CHAR, null, ('C' << 24) - | (0 << 16) | (6 << 8) | 1, 1); - - /** - * The byte type. - */ - public static final Type BYTE_TYPE = new Type(BYTE, null, ('B' << 24) - | (0 << 16) | (5 << 8) | 1, 1); - - /** - * The short type. - */ - public static final Type SHORT_TYPE = new Type(SHORT, null, ('S' << 24) - | (0 << 16) | (7 << 8) | 1, 1); - - /** - * The int type. - */ - public static final Type INT_TYPE = new Type(INT, null, ('I' << 24) - | (0 << 16) | (0 << 8) | 1, 1); - - /** - * The float type. - */ - public static final Type FLOAT_TYPE = new Type(FLOAT, null, ('F' << 24) - | (2 << 16) | (2 << 8) | 1, 1); - - /** - * The long type. - */ - public static final Type LONG_TYPE = new Type(LONG, null, ('J' << 24) - | (1 << 16) | (1 << 8) | 2, 1); - - /** - * The double type. - */ - public static final Type DOUBLE_TYPE = new Type(DOUBLE, null, ('D' << 24) - | (3 << 16) | (3 << 8) | 2, 1); - - // ------------------------------------------------------------------------ - // Fields - // ------------------------------------------------------------------------ - - /** - * The sort of this Java type. - */ - private final int sort; - - /** - * A buffer containing the internal name of this Java type. This field is - * only used for reference types. - */ - private final char[] buf; - - /** - * The offset of the internal name of this Java type in {@link #buf buf} or, - * for primitive types, the size, descriptor and getOpcode offsets for this - * type (byte 0 contains the size, byte 1 the descriptor, byte 2 the offset - * for IALOAD or IASTORE, byte 3 the offset for all other instructions). - */ - private final int off; - - /** - * The length of the internal name of this Java type. - */ - private final int len; - - // ------------------------------------------------------------------------ - // Constructors - // ------------------------------------------------------------------------ - - /** - * Constructs a reference type. - * - * @param sort the sort of the reference type to be constructed. - * @param buf a buffer containing the descriptor of the previous type. - * @param off the offset of this descriptor in the previous buffer. - * @param len the length of this descriptor. - */ - private Type(final int sort, final char[] buf, final int off, final int len) { - this.sort = sort; - this.buf = buf; - this.off = off; - this.len = len; - } - - /** - * Returns the Java type corresponding to the given type descriptor. - * - * @param typeDescriptor a field or method type descriptor. - * @return the Java type corresponding to the given type descriptor. - */ - public static Type getType(final String typeDescriptor) { - return getType(typeDescriptor.toCharArray(), 0); - } - - /** - * Returns the Java type corresponding to the given internal name. - * - * @param internalName an internal name. - * @return the Java type corresponding to the given internal name. - */ - public static Type getObjectType(final String internalName) { - char[] buf = internalName.toCharArray(); - return new Type(buf[0] == '[' ? ARRAY : OBJECT, buf, 0, buf.length); - } - - /** - * Returns the Java type corresponding to the given method descriptor. - * Equivalent to Type.getType(methodDescriptor). - * - * @param methodDescriptor a method descriptor. - * @return the Java type corresponding to the given method descriptor. - */ - public static Type getMethodType(final String methodDescriptor) { - return getType(methodDescriptor.toCharArray(), 0); - } - - /** - * Returns the Java method type corresponding to the given argument and - * return types. - * - * @param returnType the return type of the method. - * @param argumentTypes the argument types of the method. - * @return the Java type corresponding to the given argument and return - * types. - */ - public static Type getMethodType(final Type returnType, - final Type... argumentTypes) { - return getType(getMethodDescriptor(returnType, argumentTypes)); - } - - /** - * Returns the Java type corresponding to the given class. - * - * @param c a class. - * @return the Java type corresponding to the given class. - */ - public static Type getType(final Class c) { - if (c.isPrimitive()) { - if (c == Integer.TYPE) { - return INT_TYPE; - } else if (c == Void.TYPE) { - return VOID_TYPE; - } else if (c == Boolean.TYPE) { - return BOOLEAN_TYPE; - } else if (c == Byte.TYPE) { - return BYTE_TYPE; - } else if (c == Character.TYPE) { - return CHAR_TYPE; - } else if (c == Short.TYPE) { - return SHORT_TYPE; - } else if (c == Double.TYPE) { - return DOUBLE_TYPE; - } else if (c == Float.TYPE) { - return FLOAT_TYPE; - } else /* if (c == Long.TYPE) */ { - return LONG_TYPE; - } - } else { - return getType(getDescriptor(c)); - } - } - - /** - * Returns the Java method type corresponding to the given constructor. - * - * @param c a {@link Constructor Constructor} object. - * @return the Java method type corresponding to the given constructor. - */ - public static Type getType(final Constructor c) { - return getType(getConstructorDescriptor(c)); - } - - /** - * Returns the Java method type corresponding to the given method. - * - * @param m a {@link Method Method} object. - * @return the Java method type corresponding to the given method. - */ - public static Type getType(final Method m) { - return getType(getMethodDescriptor(m)); - } - - /** - * Returns the Java types corresponding to the argument types of the given - * method descriptor. - * - * @param methodDescriptor a method descriptor. - * @return the Java types corresponding to the argument types of the given - * method descriptor. - */ - public static Type[] getArgumentTypes(final String methodDescriptor) { - char[] buf = methodDescriptor.toCharArray(); - int off = 1; - int size = 0; - while (true) { - char car = buf[off++]; - if (car == ')') { - break; - } else if (car == 'L') { - while (buf[off++] != ';') { - } - ++size; - } else if (car != '[') { - ++size; - } - } - Type[] args = new Type[size]; - off = 1; - size = 0; - while (buf[off] != ')') { - args[size] = getType(buf, off); - off += args[size].len + (args[size].sort == OBJECT ? 2 : 0); - size += 1; - } - return args; - } - - /** - * Returns the Java types corresponding to the argument types of the given - * method. - * - * @param method a method. - * @return the Java types corresponding to the argument types of the given - * method. - */ - public static Type[] getArgumentTypes(final Method method) { - Class[] classes = method.getParameterTypes(); - Type[] types = new Type[classes.length]; - for (int i = classes.length - 1; i >= 0; --i) { - types[i] = getType(classes[i]); - } - return types; - } - - /** - * Returns the Java type corresponding to the return type of the given - * method descriptor. - * - * @param methodDescriptor a method descriptor. - * @return the Java type corresponding to the return type of the given - * method descriptor. - */ - public static Type getReturnType(final String methodDescriptor) { - char[] buf = methodDescriptor.toCharArray(); - return getType(buf, methodDescriptor.indexOf(')') + 1); - } - - /** - * Returns the Java type corresponding to the return type of the given - * method. - * - * @param method a method. - * @return the Java type corresponding to the return type of the given - * method. - */ - public static Type getReturnType(final Method method) { - return getType(method.getReturnType()); - } - - /** - * Computes the size of the arguments and of the return value of a method. - * - * @param desc the descriptor of a method. - * @return the size of the arguments of the method (plus one for the - * implicit this argument), argSize, and the size of its return - * value, retSize, packed into a single int i = - * (argSize << 2) | retSize (argSize is therefore equal to - * i >> 2, and retSize to i & 0x03). - */ - public static int getArgumentsAndReturnSizes(final String desc) { - int n = 1; - int c = 1; - while (true) { - char car = desc.charAt(c++); - if (car == ')') { - car = desc.charAt(c); - return n << 2 - | (car == 'V' ? 0 : (car == 'D' || car == 'J' ? 2 : 1)); - } else if (car == 'L') { - while (desc.charAt(c++) != ';') { - } - n += 1; - } else if (car == '[') { - while ((car = desc.charAt(c)) == '[') { - ++c; - } - if (car == 'D' || car == 'J') { - n -= 1; - } - } else if (car == 'D' || car == 'J') { - n += 2; - } else { - n += 1; - } - } - } - - /** - * Returns the Java type corresponding to the given type descriptor. For - * method descriptors, buf is supposed to contain nothing more than the - * descriptor itself. - * - * @param buf a buffer containing a type descriptor. - * @param off the offset of this descriptor in the previous buffer. - * @return the Java type corresponding to the given type descriptor. - */ - private static Type getType(final char[] buf, final int off) { - int len; - switch (buf[off]) { - case 'V': - return VOID_TYPE; - case 'Z': - return BOOLEAN_TYPE; - case 'C': - return CHAR_TYPE; - case 'B': - return BYTE_TYPE; - case 'S': - return SHORT_TYPE; - case 'I': - return INT_TYPE; - case 'F': - return FLOAT_TYPE; - case 'J': - return LONG_TYPE; - case 'D': - return DOUBLE_TYPE; - case '[': - len = 1; - while (buf[off + len] == '[') { - ++len; - } - if (buf[off + len] == 'L') { - ++len; - while (buf[off + len] != ';') { - ++len; - } - } - return new Type(ARRAY, buf, off, len + 1); - case 'L': - len = 1; - while (buf[off + len] != ';') { - ++len; - } - return new Type(OBJECT, buf, off + 1, len - 1); - // case '(': - default: - return new Type(METHOD, buf, off, buf.length - off); - } - } - - // ------------------------------------------------------------------------ - // Accessors - // ------------------------------------------------------------------------ - - /** - * Returns the sort of this Java type. - * - * @return {@link #VOID VOID}, {@link #BOOLEAN BOOLEAN}, {@link #CHAR CHAR}, - * {@link #BYTE BYTE}, {@link #SHORT SHORT}, {@link #INT INT}, - * {@link #FLOAT FLOAT}, {@link #LONG LONG}, {@link #DOUBLE DOUBLE}, - * {@link #ARRAY ARRAY}, {@link #OBJECT OBJECT} or {@link #METHOD - * METHOD}. - */ - public int getSort() { - return sort; - } - - /** - * Returns the number of dimensions of this array type. This method should - * only be used for an array type. - * - * @return the number of dimensions of this array type. - */ - public int getDimensions() { - int i = 1; - while (buf[off + i] == '[') { - ++i; - } - return i; - } - - /** - * Returns the type of the elements of this array type. This method should - * only be used for an array type. - * - * @return Returns the type of the elements of this array type. - */ - public Type getElementType() { - return getType(buf, off + getDimensions()); - } - - /** - * Returns the binary name of the class corresponding to this type. This - * method must not be used on method types. - * - * @return the binary name of the class corresponding to this type. - */ - public String getClassName() { - switch (sort) { - case VOID: - return "void"; - case BOOLEAN: - return "boolean"; - case CHAR: - return "char"; - case BYTE: - return "byte"; - case SHORT: - return "short"; - case INT: - return "int"; - case FLOAT: - return "float"; - case LONG: - return "long"; - case DOUBLE: - return "double"; - case ARRAY: - StringBuilder sb = new StringBuilder(getElementType().getClassName()); - for (int i = getDimensions(); i > 0; --i) { - sb.append("[]"); - } - return sb.toString(); - case OBJECT: - return new String(buf, off, len).replace('/', '.'); - default: - return null; - } - } - - /** - * Returns the internal name of the class corresponding to this object or - * array type. The internal name of a class is its fully qualified name (as - * returned by Class.getName(), where '.' are replaced by '/'. This method - * should only be used for an object or array type. - * - * @return the internal name of the class corresponding to this object type. - */ - public String getInternalName() { - return new String(buf, off, len); - } - - /** - * Returns the argument types of methods of this type. This method should - * only be used for method types. - * - * @return the argument types of methods of this type. - */ - public Type[] getArgumentTypes() { - return getArgumentTypes(getDescriptor()); - } - - /** - * Returns the return type of methods of this type. This method should only - * be used for method types. - * - * @return the return type of methods of this type. - */ - public Type getReturnType() { - return getReturnType(getDescriptor()); - } - - /** - * Returns the size of the arguments and of the return value of methods of - * this type. This method should only be used for method types. - * - * @return the size of the arguments (plus one for the implicit this - * argument), argSize, and the size of the return value, retSize, - * packed into a single - * int i = (argSize << 2) | retSize - * (argSize is therefore equal to i >> 2, - * and retSize to i & 0x03). - */ - public int getArgumentsAndReturnSizes() { - return getArgumentsAndReturnSizes(getDescriptor()); - } - - // ------------------------------------------------------------------------ - // Conversion to type descriptors - // ------------------------------------------------------------------------ - - /** - * Returns the descriptor corresponding to this Java type. - * - * @return the descriptor corresponding to this Java type. - */ - public String getDescriptor() { - StringBuffer buf = new StringBuffer(); - getDescriptor(buf); - return buf.toString(); - } - - /** - * Returns the descriptor corresponding to the given argument and return - * types. - * - * @param returnType the return type of the method. - * @param argumentTypes the argument types of the method. - * @return the descriptor corresponding to the given argument and return - * types. - */ - public static String getMethodDescriptor(final Type returnType, - final Type... argumentTypes) { - StringBuffer buf = new StringBuffer(); - buf.append('('); - for (int i = 0; i < argumentTypes.length; ++i) { - argumentTypes[i].getDescriptor(buf); - } - buf.append(')'); - returnType.getDescriptor(buf); - return buf.toString(); - } - - /** - * Appends the descriptor corresponding to this Java type to the given - * string buffer. - * - * @param buf the string buffer to which the descriptor must be appended. - */ - private void getDescriptor(final StringBuffer buf) { - if (this.buf == null) { - // descriptor is in byte 3 of 'off' for primitive types (buf == - // null) - buf.append((char) ((off & 0xFF000000) >>> 24)); - } else if (sort == OBJECT) { - buf.append('L'); - buf.append(this.buf, off, len); - buf.append(';'); - } else { // sort == ARRAY || sort == METHOD - buf.append(this.buf, off, len); - } - } - - // ------------------------------------------------------------------------ - // Direct conversion from classes to type descriptors, - // without intermediate Type objects - // ------------------------------------------------------------------------ - - /** - * Returns the internal name of the given class. The internal name of a - * class is its fully qualified name, as returned by Class.getName(), where - * '.' are replaced by '/'. - * - * @param c an object or array class. - * @return the internal name of the given class. - */ - public static String getInternalName(final Class c) { - return c.getName().replace('.', '/'); - } - - /** - * Returns the descriptor corresponding to the given Java type. - * - * @param c an object class, a primitive class or an array class. - * @return the descriptor corresponding to the given class. - */ - public static String getDescriptor(final Class c) { - StringBuffer buf = new StringBuffer(); - getDescriptor(buf, c); - return buf.toString(); - } - - /** - * Returns the descriptor corresponding to the given constructor. - * - * @param c a {@link Constructor Constructor} object. - * @return the descriptor of the given constructor. - */ - public static String getConstructorDescriptor(final Constructor c) { - Class[] parameters = c.getParameterTypes(); - StringBuffer buf = new StringBuffer(); - buf.append('('); - for (int i = 0; i < parameters.length; ++i) { - getDescriptor(buf, parameters[i]); - } - return buf.append(")V").toString(); - } - - /** - * Returns the descriptor corresponding to the given method. - * - * @param m a {@link Method Method} object. - * @return the descriptor of the given method. - */ - public static String getMethodDescriptor(final Method m) { - Class[] parameters = m.getParameterTypes(); - StringBuffer buf = new StringBuffer(); - buf.append('('); - for (int i = 0; i < parameters.length; ++i) { - getDescriptor(buf, parameters[i]); - } - buf.append(')'); - getDescriptor(buf, m.getReturnType()); - return buf.toString(); - } - - /** - * Appends the descriptor of the given class to the given string buffer. - * - * @param buf the string buffer to which the descriptor must be appended. - * @param c the class whose descriptor must be computed. - */ - private static void getDescriptor(final StringBuffer buf, final Class c) { - Class d = c; - while (true) { - if (d.isPrimitive()) { - char car; - if (d == Integer.TYPE) { - car = 'I'; - } else if (d == Void.TYPE) { - car = 'V'; - } else if (d == Boolean.TYPE) { - car = 'Z'; - } else if (d == Byte.TYPE) { - car = 'B'; - } else if (d == Character.TYPE) { - car = 'C'; - } else if (d == Short.TYPE) { - car = 'S'; - } else if (d == Double.TYPE) { - car = 'D'; - } else if (d == Float.TYPE) { - car = 'F'; - } else /* if (d == Long.TYPE) */ { - car = 'J'; - } - buf.append(car); - return; - } else if (d.isArray()) { - buf.append('['); - d = d.getComponentType(); - } else { - buf.append('L'); - String name = d.getName(); - int len = name.length(); - for (int i = 0; i < len; ++i) { - char car = name.charAt(i); - buf.append(car == '.' ? '/' : car); - } - buf.append(';'); - return; - } - } - } - - // ------------------------------------------------------------------------ - // Corresponding size and opcodes - // ------------------------------------------------------------------------ - - /** - * Returns the size of values of this type. This method must not be used for - * method types. - * - * @return the size of values of this type, i.e., 2 for long and - * double, 0 for void and 1 otherwise. - */ - public int getSize() { - // the size is in byte 0 of 'off' for primitive types (buf == null) - return buf == null ? (off & 0xFF) : 1; - } - - /** - * Returns a JVM instruction opcode adapted to this Java type. This method - * must not be used for method types. - * - * @param opcode a JVM instruction opcode. This opcode must be one of ILOAD, - * ISTORE, IALOAD, IASTORE, IADD, ISUB, IMUL, IDIV, IREM, INEG, - * ISHL, ISHR, IUSHR, IAND, IOR, IXOR and IRETURN. - * @return an opcode that is similar to the given opcode, but adapted to - * this Java type. For example, if this type is float and - * opcode is IRETURN, this method returns FRETURN. - */ - public int getOpcode(final int opcode) { - if (opcode == Opcodes.IALOAD || opcode == Opcodes.IASTORE) { - // the offset for IALOAD or IASTORE is in byte 1 of 'off' for - // primitive types (buf == null) - return opcode + (buf == null ? (off & 0xFF00) >> 8 : 4); - } else { - // the offset for other instructions is in byte 2 of 'off' for - // primitive types (buf == null) - return opcode + (buf == null ? (off & 0xFF0000) >> 16 : 4); - } - } - - // ------------------------------------------------------------------------ - // Equals, hashCode and toString - // ------------------------------------------------------------------------ - - /** - * Tests if the given object is equal to this type. - * - * @param o the object to be compared to this type. - * @return true if the given object is equal to this type. - */ - @Override - public boolean equals(final Object o) { - if (this == o) { - return true; - } - if (!(o instanceof Type)) { - return false; - } - Type t = (Type) o; - if (sort != t.sort) { - return false; - } - if (sort >= ARRAY) { - if (len != t.len) { - return false; - } - for (int i = off, j = t.off, end = i + len; i < end; i++, j++) { - if (buf[i] != t.buf[j]) { - return false; - } - } - } - return true; - } - - /** - * Returns a hash code value for this type. - * - * @return a hash code value for this type. - */ - @Override - public int hashCode() { - int hc = 13 * sort; - if (sort >= ARRAY) { - for (int i = off, end = i + len; i < end; i++) { - hc = 17 * (hc + buf[i]); - } - } - return hc; - } - - /** - * Returns a string representation of this type. - * - * @return the descriptor of this type. - */ - @Override - public String toString() { - return getDescriptor(); - } - - public char[] getBuf() { - return buf; - } - - public int getOff() { - return off; - } - - public int getLen() { - return len; - } -} \ No newline at end of file diff --git a/src/org/objectweb/asm/TypePath.java b/src/org/objectweb/asm/TypePath.java deleted file mode 100644 index c33ff50bf..000000000 --- a/src/org/objectweb/asm/TypePath.java +++ /dev/null @@ -1,191 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2013 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -package org.objectweb.asm; - -/** - * The path to a type argument, wildcard bound, array element type, or static - * inner type within an enclosing type. - * - * @author Eric Bruneton - */ -public class TypePath { - - /** - * A type path step that steps into the element type of an array type. See - * {@link #getStep getStep}. - */ - public final static int ARRAY_ELEMENT = 0; - - /** - * A type path step that steps into the nested type of a class type. See - * {@link #getStep getStep}. - */ - public final static int INNER_TYPE = 1; - - /** - * A type path step that steps into the bound of a wildcard type. See - * {@link #getStep getStep}. - */ - public final static int WILDCARD_BOUND = 2; - - /** - * A type path step that steps into a type argument of a generic type. See - * {@link #getStep getStep}. - */ - public final static int TYPE_ARGUMENT = 3; - - /** - * The byte array where the path is stored, in Java class file format. - */ - byte[] b; - - /** - * The offset of the first byte of the type path in 'b'. - */ - int offset; - - /** - * Creates a new type path. - * - * @param b the byte array containing the type path in Java class file - * format. - * @param offset the offset of the first byte of the type path in 'b'. - */ - TypePath(byte[] b, int offset) { - this.b = b; - this.offset = offset; - } - - /** - * Returns the length of this path. - * - * @return the length of this path. - */ - public int getLength() { - return b[offset]; - } - - /** - * Returns the value of the given step of this path. - * - * @param index an index between 0 and {@link #getLength()}, exclusive. - * @return {@link #ARRAY_ELEMENT ARRAY_ELEMENT}, {@link #INNER_TYPE - * INNER_TYPE}, {@link #WILDCARD_BOUND WILDCARD_BOUND}, or - * {@link #TYPE_ARGUMENT TYPE_ARGUMENT}. - */ - public int getStep(int index) { - return b[offset + 2 * index + 1]; - } - - /** - * Returns the index of the type argument that the given step is stepping - * into. This method should only be used for steps whose value is - * {@link #TYPE_ARGUMENT TYPE_ARGUMENT}. - * - * @param index an index between 0 and {@link #getLength()}, exclusive. - * @return the index of the type argument that the given step is stepping - * into. - */ - public int getStepArgument(int index) { - return b[offset + 2 * index + 2]; - } - - /** - * Converts a type path in string form, in the format used by - * {@link #toString()}, into a TypePath object. - * - * @param typePath a type path in string form, in the format used by - * {@link #toString()}. May be null or empty. - * @return the corresponding TypePath object, or null if the path is empty. - */ - public static TypePath fromString(final String typePath) { - if (typePath == null || typePath.length() == 0) { - return null; - } - int n = typePath.length(); - ByteVector out = new ByteVector(n); - out.putByte(0); - for (int i = 0; i < n; ) { - char c = typePath.charAt(i++); - if (c == '[') { - out.put11(ARRAY_ELEMENT, 0); - } else if (c == '.') { - out.put11(INNER_TYPE, 0); - } else if (c == '*') { - out.put11(WILDCARD_BOUND, 0); - } else if (c >= '0' && c <= '9') { - int typeArg = c - '0'; - while (i < n && (c = typePath.charAt(i)) >= '0' && c <= '9') { - typeArg = typeArg * 10 + c - '0'; - i += 1; - } - if (i < n && typePath.charAt(i) == ';') { - i += 1; - } - out.put11(TYPE_ARGUMENT, typeArg); - } - } - out.data[0] = (byte) (out.length / 2); - return new TypePath(out.data, 0); - } - - /** - * Returns a string representation of this type path. {@link #ARRAY_ELEMENT - * ARRAY_ELEMENT} steps are represented with '[', {@link #INNER_TYPE - * INNER_TYPE} steps with '.', {@link #WILDCARD_BOUND WILDCARD_BOUND} steps - * with '*' and {@link #TYPE_ARGUMENT TYPE_ARGUMENT} steps with their type - * argument index in decimal form followed by ';'. - */ - @Override - public String toString() { - int length = getLength(); - StringBuilder result = new StringBuilder(length * 2); - for (int i = 0; i < length; ++i) { - switch (getStep(i)) { - case ARRAY_ELEMENT: - result.append('['); - break; - case INNER_TYPE: - result.append('.'); - break; - case WILDCARD_BOUND: - result.append('*'); - break; - case TYPE_ARGUMENT: - result.append(getStepArgument(i)).append(';'); - break; - default: - result.append('_'); - } - } - return result.toString(); - } -} diff --git a/src/org/objectweb/asm/TypeReference.java b/src/org/objectweb/asm/TypeReference.java deleted file mode 100644 index 2ecd58f51..000000000 --- a/src/org/objectweb/asm/TypeReference.java +++ /dev/null @@ -1,435 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2013 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -package org.objectweb.asm; - -/** - * A reference to a type appearing in a class, field or method declaration, or - * on an instruction. Such a reference designates the part of the class where - * the referenced type is appearing (e.g. an 'extends', 'implements' or 'throws' - * clause, a 'new' instruction, a 'catch' clause, a type cast, a local variable - * declaration, etc). - * - * @author Eric Bruneton - */ -public class TypeReference { - - /** - * The sort of type references that target a type parameter of a generic - * class. See {@link #getSort getSort}. - */ - public final static int CLASS_TYPE_PARAMETER = 0x00; - - /** - * The sort of type references that target a type parameter of a generic - * method. See {@link #getSort getSort}. - */ - public final static int METHOD_TYPE_PARAMETER = 0x01; - - /** - * The sort of type references that target the super class of a class or one - * of the interfaces it implements. See {@link #getSort getSort}. - */ - public final static int CLASS_EXTENDS = 0x10; - - /** - * The sort of type references that target a bound of a type parameter of a - * generic class. See {@link #getSort getSort}. - */ - public final static int CLASS_TYPE_PARAMETER_BOUND = 0x11; - - /** - * The sort of type references that target a bound of a type parameter of a - * generic method. See {@link #getSort getSort}. - */ - public final static int METHOD_TYPE_PARAMETER_BOUND = 0x12; - - /** - * The sort of type references that target the type of a field. See - * {@link #getSort getSort}. - */ - public final static int FIELD = 0x13; - - /** - * The sort of type references that target the return type of a method. See - * {@link #getSort getSort}. - */ - public final static int METHOD_RETURN = 0x14; - - /** - * The sort of type references that target the receiver type of a method. - * See {@link #getSort getSort}. - */ - public final static int METHOD_RECEIVER = 0x15; - - /** - * The sort of type references that target the type of a formal parameter of - * a method. See {@link #getSort getSort}. - */ - public final static int METHOD_FORMAL_PARAMETER = 0x16; - - /** - * The sort of type references that target the type of an exception declared - * in the throws clause of a method. See {@link #getSort getSort}. - */ - public final static int THROWS = 0x17; - - /** - * The sort of type references that target the type of a local variable in a - * method. See {@link #getSort getSort}. - */ - public final static int LOCAL_VARIABLE = 0x40; - - /** - * The sort of type references that target the type of a resource variable - * in a method. See {@link #getSort getSort}. - */ - public final static int RESOURCE_VARIABLE = 0x41; - - /** - * The sort of type references that target the type of the exception of a - * 'catch' clause in a method. See {@link #getSort getSort}. - */ - public final static int EXCEPTION_PARAMETER = 0x42; - - /** - * The sort of type references that target the type declared in an - * 'instanceof' instruction. See {@link #getSort getSort}. - */ - public final static int INSTANCEOF = 0x43; - - /** - * The sort of type references that target the type of the object created by - * a 'new' instruction. See {@link #getSort getSort}. - */ - public final static int NEW = 0x44; - - /** - * The sort of type references that target the receiver type of a - * constructor reference. See {@link #getSort getSort}. - */ - public final static int CONSTRUCTOR_REFERENCE = 0x45; - - /** - * The sort of type references that target the receiver type of a method - * reference. See {@link #getSort getSort}. - */ - public final static int METHOD_REFERENCE = 0x46; - - /** - * The sort of type references that target the type declared in an explicit - * or implicit cast instruction. See {@link #getSort getSort}. - */ - public final static int CAST = 0x47; - - /** - * The sort of type references that target a type parameter of a generic - * constructor in a constructor call. See {@link #getSort getSort}. - */ - public final static int CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT = 0x48; - - /** - * The sort of type references that target a type parameter of a generic - * method in a method call. See {@link #getSort getSort}. - */ - public final static int METHOD_INVOCATION_TYPE_ARGUMENT = 0x49; - - /** - * The sort of type references that target a type parameter of a generic - * constructor in a constructor reference. See {@link #getSort getSort}. - */ - public final static int CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT = 0x4A; - - /** - * The sort of type references that target a type parameter of a generic - * method in a method reference. See {@link #getSort getSort}. - */ - public final static int METHOD_REFERENCE_TYPE_ARGUMENT = 0x4B; - - /** - * The type reference value in Java class file format. - */ - private int value; - - /** - * Creates a new TypeReference. - * - * @param typeRef the int encoded value of the type reference, as received in a - * visit method related to type annotations, like - * visitTypeAnnotation. - */ - public TypeReference(int typeRef) { - this.value = typeRef; - } - - /** - * Returns a type reference of the given sort. - * - * @param sort {@link #FIELD FIELD}, {@link #METHOD_RETURN METHOD_RETURN}, - * {@link #METHOD_RECEIVER METHOD_RECEIVER}, - * {@link #LOCAL_VARIABLE LOCAL_VARIABLE}, - * {@link #RESOURCE_VARIABLE RESOURCE_VARIABLE}, - * {@link #INSTANCEOF INSTANCEOF}, {@link #NEW NEW}, - * {@link #CONSTRUCTOR_REFERENCE CONSTRUCTOR_REFERENCE}, or - * {@link #METHOD_REFERENCE METHOD_REFERENCE}. - * @return a type reference of the given sort. - */ - public static TypeReference newTypeReference(int sort) { - return new TypeReference(sort << 24); - } - - /** - * Returns a reference to a type parameter of a generic class or method. - * - * @param sort {@link #CLASS_TYPE_PARAMETER CLASS_TYPE_PARAMETER} or - * {@link #METHOD_TYPE_PARAMETER METHOD_TYPE_PARAMETER}. - * @param paramIndex the type parameter index. - * @return a reference to the given generic class or method type parameter. - */ - public static TypeReference newTypeParameterReference(int sort, - int paramIndex) { - return new TypeReference((sort << 24) | (paramIndex << 16)); - } - - /** - * Returns a reference to a type parameter bound of a generic class or - * method. - * - * @param sort {@link #CLASS_TYPE_PARAMETER CLASS_TYPE_PARAMETER} or - * {@link #METHOD_TYPE_PARAMETER METHOD_TYPE_PARAMETER}. - * @param paramIndex the type parameter index. - * @param boundIndex the type bound index within the above type parameters. - * @return a reference to the given generic class or method type parameter - * bound. - */ - public static TypeReference newTypeParameterBoundReference(int sort, - int paramIndex, int boundIndex) { - return new TypeReference((sort << 24) | (paramIndex << 16) - | (boundIndex << 8)); - } - - /** - * Returns a reference to the super class or to an interface of the - * 'implements' clause of a class. - * - * @param itfIndex the index of an interface in the 'implements' clause of a - * class, or -1 to reference the super class of the class. - * @return a reference to the given super type of a class. - */ - public static TypeReference newSuperTypeReference(int itfIndex) { - itfIndex &= 0xFFFF; - return new TypeReference((CLASS_EXTENDS << 24) | (itfIndex << 8)); - } - - /** - * Returns a reference to the type of a formal parameter of a method. - * - * @param paramIndex the formal parameter index. - * @return a reference to the type of the given method formal parameter. - */ - public static TypeReference newFormalParameterReference(int paramIndex) { - return new TypeReference((METHOD_FORMAL_PARAMETER << 24) - | (paramIndex << 16)); - } - - /** - * Returns a reference to the type of an exception, in a 'throws' clause of - * a method. - * - * @param exceptionIndex the index of an exception in a 'throws' clause of a method. - * @return a reference to the type of the given exception. - */ - public static TypeReference newExceptionReference(int exceptionIndex) { - return new TypeReference((THROWS << 24) | (exceptionIndex << 8)); - } - - /** - * Returns a reference to the type of the exception declared in a 'catch' - * clause of a method. - * - * @param tryCatchBlockIndex the index of a try catch block (using the order in which they - * are visited with visitTryCatchBlock). - * @return a reference to the type of the given exception. - */ - public static TypeReference newTryCatchReference(int tryCatchBlockIndex) { - return new TypeReference((EXCEPTION_PARAMETER << 24) - | (tryCatchBlockIndex << 8)); - } - - /** - * Returns a reference to the type of a type argument in a constructor or - * method call or reference. - * - * @param sort {@link #CAST CAST}, - * {@link #CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT - * CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT}, - * {@link #METHOD_INVOCATION_TYPE_ARGUMENT - * METHOD_INVOCATION_TYPE_ARGUMENT}, - * {@link #CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT - * CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT}, or - * {@link #METHOD_REFERENCE_TYPE_ARGUMENT - * METHOD_REFERENCE_TYPE_ARGUMENT}. - * @param argIndex the type argument index. - * @return a reference to the type of the given type argument. - */ - public static TypeReference newTypeArgumentReference(int sort, int argIndex) { - return new TypeReference((sort << 24) | argIndex); - } - - /** - * Returns the sort of this type reference. - * - * @return {@link #CLASS_TYPE_PARAMETER CLASS_TYPE_PARAMETER}, - * {@link #METHOD_TYPE_PARAMETER METHOD_TYPE_PARAMETER}, - * {@link #CLASS_EXTENDS CLASS_EXTENDS}, - * {@link #CLASS_TYPE_PARAMETER_BOUND CLASS_TYPE_PARAMETER_BOUND}, - * {@link #METHOD_TYPE_PARAMETER_BOUND METHOD_TYPE_PARAMETER_BOUND}, - * {@link #FIELD FIELD}, {@link #METHOD_RETURN METHOD_RETURN}, - * {@link #METHOD_RECEIVER METHOD_RECEIVER}, - * {@link #METHOD_FORMAL_PARAMETER METHOD_FORMAL_PARAMETER}, - * {@link #THROWS THROWS}, {@link #LOCAL_VARIABLE LOCAL_VARIABLE}, - * {@link #RESOURCE_VARIABLE RESOURCE_VARIABLE}, - * {@link #EXCEPTION_PARAMETER EXCEPTION_PARAMETER}, - * {@link #INSTANCEOF INSTANCEOF}, {@link #NEW NEW}, - * {@link #CONSTRUCTOR_REFERENCE CONSTRUCTOR_REFERENCE}, - * {@link #METHOD_REFERENCE METHOD_REFERENCE}, {@link #CAST CAST}, - * {@link #CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT - * CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT}, - * {@link #METHOD_INVOCATION_TYPE_ARGUMENT - * METHOD_INVOCATION_TYPE_ARGUMENT}, - * {@link #CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT - * CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT}, or - * {@link #METHOD_REFERENCE_TYPE_ARGUMENT - * METHOD_REFERENCE_TYPE_ARGUMENT}. - */ - public int getSort() { - return value >>> 24; - } - - /** - * Returns the index of the type parameter referenced by this type - * reference. This method must only be used for type references whose sort - * is {@link #CLASS_TYPE_PARAMETER CLASS_TYPE_PARAMETER}, - * {@link #METHOD_TYPE_PARAMETER METHOD_TYPE_PARAMETER}, - * {@link #CLASS_TYPE_PARAMETER_BOUND CLASS_TYPE_PARAMETER_BOUND} or - * {@link #METHOD_TYPE_PARAMETER_BOUND METHOD_TYPE_PARAMETER_BOUND}. - * - * @return a type parameter index. - */ - public int getTypeParameterIndex() { - return (value & 0x00FF0000) >> 16; - } - - /** - * Returns the index of the type parameter bound, within the type parameter - * {@link #getTypeParameterIndex}, referenced by this type reference. This - * method must only be used for type references whose sort is - * {@link #CLASS_TYPE_PARAMETER_BOUND CLASS_TYPE_PARAMETER_BOUND} or - * {@link #METHOD_TYPE_PARAMETER_BOUND METHOD_TYPE_PARAMETER_BOUND}. - * - * @return a type parameter bound index. - */ - public int getTypeParameterBoundIndex() { - return (value & 0x0000FF00) >> 8; - } - - /** - * Returns the index of the "super type" of a class that is referenced by - * this type reference. This method must only be used for type references - * whose sort is {@link #CLASS_EXTENDS CLASS_EXTENDS}. - * - * @return the index of an interface in the 'implements' clause of a class, - * or -1 if this type reference references the type of the super - * class. - */ - public int getSuperTypeIndex() { - return (short) ((value & 0x00FFFF00) >> 8); - } - - /** - * Returns the index of the formal parameter whose type is referenced by - * this type reference. This method must only be used for type references - * whose sort is {@link #METHOD_FORMAL_PARAMETER METHOD_FORMAL_PARAMETER}. - * - * @return a formal parameter index. - */ - public int getFormalParameterIndex() { - return (value & 0x00FF0000) >> 16; - } - - /** - * Returns the index of the exception, in a 'throws' clause of a method, - * whose type is referenced by this type reference. This method must only be - * used for type references whose sort is {@link #THROWS THROWS}. - * - * @return the index of an exception in the 'throws' clause of a method. - */ - public int getExceptionIndex() { - return (value & 0x00FFFF00) >> 8; - } - - /** - * Returns the index of the try catch block (using the order in which they - * are visited with visitTryCatchBlock), whose 'catch' type is referenced by - * this type reference. This method must only be used for type references - * whose sort is {@link #EXCEPTION_PARAMETER EXCEPTION_PARAMETER} . - * - * @return the index of an exception in the 'throws' clause of a method. - */ - public int getTryCatchBlockIndex() { - return (value & 0x00FFFF00) >> 8; - } - - /** - * Returns the index of the type argument referenced by this type reference. - * This method must only be used for type references whose sort is - * {@link #CAST CAST}, {@link #CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT - * CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT}, - * {@link #METHOD_INVOCATION_TYPE_ARGUMENT METHOD_INVOCATION_TYPE_ARGUMENT}, - * {@link #CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT - * CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT}, or - * {@link #METHOD_REFERENCE_TYPE_ARGUMENT METHOD_REFERENCE_TYPE_ARGUMENT}. - * - * @return a type parameter index. - */ - public int getTypeArgumentIndex() { - return value & 0xFF; - } - - /** - * Returns the int encoded value of this type reference, suitable for use in - * visit methods related to type annotations, like visitTypeAnnotation. - * - * @return the int encoded value of this type reference. - */ - public int getValue() { - return value; - } -} diff --git a/src/org/objectweb/asm/commons/AdviceAdapter.java b/src/org/objectweb/asm/commons/AdviceAdapter.java deleted file mode 100644 index c9596ca69..000000000 --- a/src/org/objectweb/asm/commons/AdviceAdapter.java +++ /dev/null @@ -1,639 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm.commons; - -import java.util.ArrayList; -import java.util.HashMap; -import java.util.List; -import java.util.Map; - -import org.objectweb.asm.Handle; -import org.objectweb.asm.Label; -import org.objectweb.asm.MethodVisitor; -import org.objectweb.asm.Opcodes; -import org.objectweb.asm.Type; - -/** - * A {@link org.objectweb.asm.MethodVisitor} to insert before, after and around - * advices in methods and constructors. - *

- * The behavior for constructors is like this: - *

    - *

    - *

  1. as long as the INVOKESPECIAL for the object initialization has not been - * reached, every bytecode instruction is dispatched in the ctor code visitor
    2. - *

    - *

  2. when this one is reached, it is only added in the ctor code visitor and a - * JP invoke is added
    3. - *

    - *

  3. after that, only the other code visitor receives the instructions
    4. - *

    - *

- * - * @author Eugene Kuleshov - * @author Eric Bruneton - */ -public abstract class AdviceAdapter extends GeneratorAdapter implements Opcodes { - - private static final Object THIS = new Object(); - - private static final Object OTHER = new Object(); - - protected int methodAccess; - - protected String methodDesc; - - private boolean constructor; - - private boolean superInitialized; - - private List stackFrame; - - private Map> branches; - - /** - * Creates a new {@link AdviceAdapter}. - * - * @param api the ASM API version implemented by this visitor. Must be one - * of {@link Opcodes#ASM4} or {@link Opcodes#ASM5}. - * @param mv the method visitor to which this adapter delegates calls. - * @param access the method's access flags (see {@link Opcodes}). - * @param name the method's name. - * @param desc the method's descriptor (see {@link Type Type}). - */ - protected AdviceAdapter(final int api, final MethodVisitor mv, - final int access, final String name, final String desc) { - super(api, mv, access, name, desc); - methodAccess = access; - methodDesc = desc; - constructor = "".equals(name); - } - - @Override - public void visitCode() { - mv.visitCode(); - if (constructor) { - stackFrame = new ArrayList(); - branches = new HashMap>(); - } else { - superInitialized = true; - onMethodEnter(); - } - } - - @Override - public void visitLabel(final Label label) { - mv.visitLabel(label); - if (constructor && branches != null) { - List frame = branches.get(label); - if (frame != null) { - stackFrame = frame; - branches.remove(label); - } - } - } - - @Override - public void visitInsn(final int opcode) { - if (constructor) { - int s; - switch (opcode) { - case RETURN: // empty stack - onMethodExit(opcode); - break; - case IRETURN: // 1 before n/a after - case FRETURN: // 1 before n/a after - case ARETURN: // 1 before n/a after - case ATHROW: // 1 before n/a after - popValue(); - onMethodExit(opcode); - break; - case LRETURN: // 2 before n/a after - case DRETURN: // 2 before n/a after - popValue(); - popValue(); - onMethodExit(opcode); - break; - case NOP: - case LALOAD: // remove 2 add 2 - case DALOAD: // remove 2 add 2 - case LNEG: - case DNEG: - case FNEG: - case INEG: - case L2D: - case D2L: - case F2I: - case I2B: - case I2C: - case I2S: - case I2F: - case ARRAYLENGTH: - break; - case ACONST_NULL: - case ICONST_M1: - case ICONST_0: - case ICONST_1: - case ICONST_2: - case ICONST_3: - case ICONST_4: - case ICONST_5: - case FCONST_0: - case FCONST_1: - case FCONST_2: - case F2L: // 1 before 2 after - case F2D: - case I2L: - case I2D: - pushValue(OTHER); - break; - case LCONST_0: - case LCONST_1: - case DCONST_0: - case DCONST_1: - pushValue(OTHER); - pushValue(OTHER); - break; - case IALOAD: // remove 2 add 1 - case FALOAD: // remove 2 add 1 - case AALOAD: // remove 2 add 1 - case BALOAD: // remove 2 add 1 - case CALOAD: // remove 2 add 1 - case SALOAD: // remove 2 add 1 - case POP: - case IADD: - case FADD: - case ISUB: - case LSHL: // 3 before 2 after - case LSHR: // 3 before 2 after - case LUSHR: // 3 before 2 after - case L2I: // 2 before 1 after - case L2F: // 2 before 1 after - case D2I: // 2 before 1 after - case D2F: // 2 before 1 after - case FSUB: - case FMUL: - case FDIV: - case FREM: - case FCMPL: // 2 before 1 after - case FCMPG: // 2 before 1 after - case IMUL: - case IDIV: - case IREM: - case ISHL: - case ISHR: - case IUSHR: - case IAND: - case IOR: - case IXOR: - case MONITORENTER: - case MONITOREXIT: - popValue(); - break; - case POP2: - case LSUB: - case LMUL: - case LDIV: - case LREM: - case LADD: - case LAND: - case LOR: - case LXOR: - case DADD: - case DMUL: - case DSUB: - case DDIV: - case DREM: - popValue(); - popValue(); - break; - case IASTORE: - case FASTORE: - case AASTORE: - case BASTORE: - case CASTORE: - case SASTORE: - case LCMP: // 4 before 1 after - case DCMPL: - case DCMPG: - popValue(); - popValue(); - popValue(); - break; - case LASTORE: - case DASTORE: - popValue(); - popValue(); - popValue(); - popValue(); - break; - case DUP: - pushValue(peekValue()); - break; - case DUP_X1: - s = stackFrame.size(); - stackFrame.add(s - 2, stackFrame.get(s - 1)); - break; - case DUP_X2: - s = stackFrame.size(); - stackFrame.add(s - 3, stackFrame.get(s - 1)); - break; - case DUP2: - s = stackFrame.size(); - stackFrame.add(s - 2, stackFrame.get(s - 1)); - stackFrame.add(s - 2, stackFrame.get(s - 1)); - break; - case DUP2_X1: - s = stackFrame.size(); - stackFrame.add(s - 3, stackFrame.get(s - 1)); - stackFrame.add(s - 3, stackFrame.get(s - 1)); - break; - case DUP2_X2: - s = stackFrame.size(); - stackFrame.add(s - 4, stackFrame.get(s - 1)); - stackFrame.add(s - 4, stackFrame.get(s - 1)); - break; - case SWAP: - s = stackFrame.size(); - stackFrame.add(s - 2, stackFrame.get(s - 1)); - stackFrame.remove(s); - break; - } - } else { - switch (opcode) { - case RETURN: - case IRETURN: - case FRETURN: - case ARETURN: - case LRETURN: - case DRETURN: - case ATHROW: - onMethodExit(opcode); - break; - } - } - mv.visitInsn(opcode); - } - - @Override - public void visitVarInsn(final int opcode, final int var) { - super.visitVarInsn(opcode, var); - if (constructor) { - switch (opcode) { - case ILOAD: - case FLOAD: - pushValue(OTHER); - break; - case LLOAD: - case DLOAD: - pushValue(OTHER); - pushValue(OTHER); - break; - case ALOAD: - pushValue(var == 0 ? THIS : OTHER); - break; - case ASTORE: - case ISTORE: - case FSTORE: - popValue(); - break; - case LSTORE: - case DSTORE: - popValue(); - popValue(); - break; - } - } - } - - @Override - public void visitFieldInsn(final int opcode, final String owner, - final String name, final String desc) { - mv.visitFieldInsn(opcode, owner, name, desc); - if (constructor) { - char c = desc.charAt(0); - boolean longOrDouble = c == 'J' || c == 'D'; - switch (opcode) { - case GETSTATIC: - pushValue(OTHER); - if (longOrDouble) { - pushValue(OTHER); - } - break; - case PUTSTATIC: - popValue(); - if (longOrDouble) { - popValue(); - } - break; - case PUTFIELD: - popValue(); - if (longOrDouble) { - popValue(); - popValue(); - } - break; - // case GETFIELD: - default: - if (longOrDouble) { - pushValue(OTHER); - } - } - } - } - - @Override - public void visitIntInsn(final int opcode, final int operand) { - mv.visitIntInsn(opcode, operand); - if (constructor && opcode != NEWARRAY) { - pushValue(OTHER); - } - } - - @Override - public void visitLdcInsn(final Object cst) { - mv.visitLdcInsn(cst); - if (constructor) { - pushValue(OTHER); - if (cst instanceof Double || cst instanceof Long) { - pushValue(OTHER); - } - } - } - - @Override - public void visitMultiANewArrayInsn(final String desc, final int dims) { - mv.visitMultiANewArrayInsn(desc, dims); - if (constructor) { - for (int i = 0; i < dims; i++) { - popValue(); - } - pushValue(OTHER); - } - } - - @Override - public void visitTypeInsn(final int opcode, final String type) { - mv.visitTypeInsn(opcode, type); - // ANEWARRAY, CHECKCAST or INSTANCEOF don't change stack - if (constructor && opcode == NEW) { - pushValue(OTHER); - } - } - - @Deprecated - @Override - public void visitMethodInsn(final int opcode, final String owner, - final String name, final String desc) { - if (api >= Opcodes.ASM5) { - super.visitMethodInsn(opcode, owner, name, desc); - return; - } - doVisitMethodInsn(opcode, owner, name, desc, - opcode == Opcodes.INVOKEINTERFACE); - } - - @Override - public void visitMethodInsn(final int opcode, final String owner, - final String name, final String desc, final boolean itf) { - if (api < Opcodes.ASM5) { - super.visitMethodInsn(opcode, owner, name, desc, itf); - return; - } - doVisitMethodInsn(opcode, owner, name, desc, itf); - } - - private void doVisitMethodInsn(int opcode, final String owner, - final String name, final String desc, final boolean itf) { - mv.visitMethodInsn(opcode, owner, name, desc, itf); - if (constructor) { - Type[] types = Type.getArgumentTypes(desc); - for (int i = 0; i < types.length; i++) { - popValue(); - if (types[i].getSize() == 2) { - popValue(); - } - } - switch (opcode) { - // case INVOKESTATIC: - // break; - case INVOKEINTERFACE: - case INVOKEVIRTUAL: - popValue(); // objectref - break; - case INVOKESPECIAL: - Object type = popValue(); // objectref - if (type == THIS && !superInitialized) { - onMethodEnter(); - superInitialized = true; - // once super has been initialized it is no longer - // necessary to keep track of stack state - constructor = false; - } - break; - } - - Type returnType = Type.getReturnType(desc); - if (returnType != Type.VOID_TYPE) { - pushValue(OTHER); - if (returnType.getSize() == 2) { - pushValue(OTHER); - } - } - } - } - - @Override - public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, - Object... bsmArgs) { - mv.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs); - if (constructor) { - Type[] types = Type.getArgumentTypes(desc); - for (int i = 0; i < types.length; i++) { - popValue(); - if (types[i].getSize() == 2) { - popValue(); - } - } - - Type returnType = Type.getReturnType(desc); - if (returnType != Type.VOID_TYPE) { - pushValue(OTHER); - if (returnType.getSize() == 2) { - pushValue(OTHER); - } - } - } - } - - @Override - public void visitJumpInsn(final int opcode, final Label label) { - mv.visitJumpInsn(opcode, label); - if (constructor) { - switch (opcode) { - case IFEQ: - case IFNE: - case IFLT: - case IFGE: - case IFGT: - case IFLE: - case IFNULL: - case IFNONNULL: - popValue(); - break; - case IF_ICMPEQ: - case IF_ICMPNE: - case IF_ICMPLT: - case IF_ICMPGE: - case IF_ICMPGT: - case IF_ICMPLE: - case IF_ACMPEQ: - case IF_ACMPNE: - popValue(); - popValue(); - break; - case JSR: - pushValue(OTHER); - break; - } - addBranch(label); - } - } - - @Override - public void visitLookupSwitchInsn(final Label dflt, final int[] keys, - final Label[] labels) { - mv.visitLookupSwitchInsn(dflt, keys, labels); - if (constructor) { - popValue(); - addBranches(dflt, labels); - } - } - - @Override - public void visitTableSwitchInsn(final int min, final int max, - final Label dflt, final Label... labels) { - mv.visitTableSwitchInsn(min, max, dflt, labels); - if (constructor) { - popValue(); - addBranches(dflt, labels); - } - } - - @Override - public void visitTryCatchBlock(Label start, Label end, Label handler, - String type) { - super.visitTryCatchBlock(start, end, handler, type); - if (constructor && !branches.containsKey(handler)) { - List stackFrame = new ArrayList(); - stackFrame.add(OTHER); - branches.put(handler, stackFrame); - } - } - - private void addBranches(final Label dflt, final Label[] labels) { - addBranch(dflt); - for (int i = 0; i < labels.length; i++) { - addBranch(labels[i]); - } - } - - private void addBranch(final Label label) { - if (branches.containsKey(label)) { - return; - } - branches.put(label, new ArrayList(stackFrame)); - } - - private Object popValue() { - return stackFrame.remove(stackFrame.size() - 1); - } - - private Object peekValue() { - return stackFrame.get(stackFrame.size() - 1); - } - - private void pushValue(final Object o) { - stackFrame.add(o); - } - - /** - * Called at the beginning of the method or after super class call in - * the constructor.
- *
- *

- * Custom code can use or change all the local variables, but should not - * change state of the stack. - */ - protected void onMethodEnter() { - } - - /** - * Called before explicit exit from the method using either return or throw. - * Top element on the stack contains the return value or exception instance. - * For example: - *

- * 

-     *   public void onMethodExit(int opcode) {
-     *     if(opcode==RETURN) {
-     *         visitInsn(ACONST_NULL);
-     *     } else if(opcode==ARETURN || opcode==ATHROW) {
-     *         dup();
-     *     } else {
-     *         if(opcode==LRETURN || opcode==DRETURN) {
-     *             dup2();
-     *         } else {
-     *             dup();
-     *         }
-     *         box(Type.getReturnType(this.methodDesc));
-     *     }
-     *     visitIntInsn(SIPUSH, opcode);
-     *     visitMethodInsn(INVOKESTATIC, owner, "onExit", "(Ljava/lang/Object;I)V");
-     *   }
-     *
-     *   // an actual call back method
-     *   public static void onExit(Object param, int opcode) {
-     *     ...
-     *
- *

- *
- *
- *

- * Custom code can use or change all the local variables, but should not - * change state of the stack. - * - * @param opcode one of the RETURN, IRETURN, FRETURN, ARETURN, LRETURN, DRETURN - * or ATHROW - */ - protected void onMethodExit(int opcode) { - } - - // TODO onException, onMethodCall -} diff --git a/src/org/objectweb/asm/commons/AnalyzerAdapter.java b/src/org/objectweb/asm/commons/AnalyzerAdapter.java deleted file mode 100644 index c0ccbb6a3..000000000 --- a/src/org/objectweb/asm/commons/AnalyzerAdapter.java +++ /dev/null @@ -1,935 +0,0 @@ -/*** - * ASM: a very small and fast Java bytecode manipulation framework - * Copyright (c) 2000-2011 INRIA, France Telecom - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ -package org.objectweb.asm.commons; - -import java.util.ArrayList; -import java.util.HashMap; -import java.util.List; -import java.util.Map; - -import org.objectweb.asm.Handle; -import org.objectweb.asm.Label; -import org.objectweb.asm.MethodVisitor; -import org.objectweb.asm.Opcodes; -import org.objectweb.asm.Type; - -/** - * A {@link MethodVisitor} that keeps track of stack map frame changes between - * {@link #visitFrame(int, int, Object[], int, Object[]) visitFrame} calls. This - * adapter must be used with the - * {@link org.objectweb.asm.ClassReader#EXPAND_FRAMES} option. Each - * visitX instruction delegates to the next visitor in the chain, if any, - * and then simulates the effect of this instruction on the stack map frame, - * represented by {@link #locals} and {@link #stack}. The next visitor in the - * chain can get the state of the stack map frame before each instruction - * by reading the value of these fields in its visitX methods (this - * requires a reference to the AnalyzerAdapter that is before it in the chain). - * If this adapter is used with a class that does not contain stack map table - * attributes (i.e., pre Java 6 classes) then this adapter may not be able to - * compute the stack map frame for each instruction. In this case no exception - * is thrown but the {@link #locals} and {@link #stack} fields will be null for - * these instructions. - * - * @author Eric Bruneton - */ -public class AnalyzerAdapter extends MethodVisitor { - - /** - * List of the local variable slots for current execution - * frame. Primitive types are represented by {@link Opcodes#TOP}, - * {@link Opcodes#INTEGER}, {@link Opcodes#FLOAT}, {@link Opcodes#LONG}, - * {@link Opcodes#DOUBLE},{@link Opcodes#NULL} or - * {@link Opcodes#UNINITIALIZED_THIS} (long and double are represented by - * two elements, the second one being TOP). Reference types are represented - * by String objects (representing internal names), and uninitialized types - * by Label objects (this label designates the NEW instruction that created - * this uninitialized value). This field is null for unreachable - * instructions. - */ - public List locals; - - /** - * List of the operand stack slots for current execution frame. - * Primitive types are represented by {@link Opcodes#TOP}, - * {@link Opcodes#INTEGER}, {@link Opcodes#FLOAT}, {@link Opcodes#LONG}, - * {@link Opcodes#DOUBLE},{@link Opcodes#NULL} or - * {@link Opcodes#UNINITIALIZED_THIS} (long and double are represented by - * two elements, the second one being TOP). Reference types are represented - * by String objects (representing internal names), and uninitialized types - * by Label objects (this label designates the NEW instruction that created - * this uninitialized value). This field is null for unreachable - * instructions. - */ - public List stack; - - /** - * The labels that designate the next instruction to be visited. May be - * null. - */ - private List