Revert "Use jar library instead of java files"

This reverts commit a197915.

app/build.gradle.kts

@@ -67,7 +67,7 @@ dependencies {
     implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.6.2")
     implementation("androidx.compose.material:material-icons-extended:1.5.4")
     implementation("androidx.navigation:navigation-compose:2.7.5")
-    implementation(files("arity-2.1.2.jar"))
+    implementation(project(mapOf("path" to ":arity")))
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")

arity/.gitignore

@@ -0,0 +1 @@
+/build

arity/build.gradle.kts

@@ -0,0 +1,9 @@
+plugins {
+    id("java-library")
+    id("org.jetbrains.kotlin.jvm")
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+}

arity/src/main/java/org/javia/arity/ArityException.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2007-2009 Mihai Preda.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.javia.arity;
+
+/**
+ * Thrown when a {@link Function} is evaluated with a wrong number of arguments
+ * (when the number of arguments is not equal to the function's arity).
+ */
+
+public class ArityException extends RuntimeException {
+    public ArityException(String mes) {
+        super(mes);
+    }
+
+    public ArityException(int nArgs) {
+        this("Didn't expect " + nArgs + " arguments");
+    }
+}

arity/src/main/java/org/javia/arity/ByteStack.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2008-2009 Mihai Preda.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.javia.arity;
+
+class ByteStack {
+    private byte[] data = new byte[8];
+    private int size = 0;
+
+    void clear() {
+        size = 0;
+    }
+
+    void push(byte b) {
+        if (size >= data.length) {
+            byte[] newData = new byte[data.length << 1];
+            System.arraycopy(data, 0, newData, 0, data.length);
+            data = newData;
+        }
+        data[size++] = b;
+    }
+
+    /*
+    void pop(int cnt) {
+        size -= cnt;
+    }
+    */
+
+    byte pop() {
+        return data[--size];
+    }
+
+    byte[] toArray() {
+        byte[] trimmed = new byte[size];
+        System.arraycopy(data, 0, trimmed, 0, size);
+        return trimmed;
+    }
+}