FIX 496 : Add support for CodeSource URL for GoloClassLoader

src/main/java/org/eclipse/golo/cli/command/GoloGoloCommand.java

@@ -78,7 +78,7 @@ private Class<?> loadGoloFile(String goloFile, String module, GoloClassLoader lo
       }
     } else if (file.getName().endsWith(".golo")) {
       try (FileInputStream in = new FileInputStream(file)) {
-        Class<?> loadedClass = loader.load(file.getName(), in);
+        Class<?> loadedClass = loader.load(file.getName(), in, file.toURI().toURL());
         if (module == null || loadedClass.getCanonicalName().equals(module)) {
           return loadedClass;
         }

src/main/java/org/eclipse/golo/cli/command/ShebangCommand.java

@@ -78,7 +78,7 @@ private Class<?> loadGoloFile(GoloClassLoader loader, Path path) {
     try (InputStream is = Files.newInputStream(path)) {
       Path filename = path.getFileName();
       if (filename != null) {
-        return loader.load(filename.toString(), is);
+        return loader.load(filename.toString(), is, path.toUri().toURL());
       } else {
         throw new RuntimeException(message("not_regular_file", path));
       }

src/main/java/org/eclipse/golo/compiler/GoloClassLoader.java

@@ -10,6 +10,10 @@
 package org.eclipse.golo.compiler;
 
 import java.io.InputStream;
+import java.net.URL;
+import java.security.CodeSource;
+import java.security.ProtectionDomain;
+import java.security.cert.Certificate;
 import java.util.List;
 
 /**
@@ -58,4 +62,25 @@ public synchronized Class<?> load(String goloSourceFilename, InputStream sourceC
     }
     return lastClassIsModule;
   }
+
+  /**
+   * Compiles and loads the resulting JVM bytecode for a Golo source file.
+   * This method declares a URL for the CodeSource of this class, which
+   * is useful for retrieving the location at runtime.
+   *
+   * @param goloSourceFilename    the source file name.
+   * @param sourceCodeInputStream the source input stream.
+   * @param sourceCodeLocation    the source file location.
+   * @return the class matching the Golo module defined in the source.
+   * @throws GoloCompilationException if either of the compilation phase failed.
+   */
+  public synchronized Class<?> load(String goloSourceFilename, InputStream sourceCodeInputStream, URL sourceCodeLocation) throws GoloCompilationException {
+    List<CodeGenerationResult> results = compiler.compile(goloSourceFilename, sourceCodeInputStream);
+    Class<?> lastClassIsModule = null;
+    for (CodeGenerationResult result : results) {
+      byte[] bytecode = result.getBytecode();
+      lastClassIsModule = defineClass(null, bytecode, 0, bytecode.length, new ProtectionDomain(new CodeSource(sourceCodeLocation, (Certificate[])null), null));
+    }
+    return lastClassIsModule;
+  }
 }