diff options
Diffstat (limited to 'src_eclipseagent/lombok/eclipse/agent/EclipseASTConverterTransformer.java')
-rw-r--r-- | src_eclipseagent/lombok/eclipse/agent/EclipseASTConverterTransformer.java | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/src_eclipseagent/lombok/eclipse/agent/EclipseASTConverterTransformer.java b/src_eclipseagent/lombok/eclipse/agent/EclipseASTConverterTransformer.java deleted file mode 100644 index 4245e246..00000000 --- a/src_eclipseagent/lombok/eclipse/agent/EclipseASTConverterTransformer.java +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Copyright © 2009 Reinier Zwitserloot and Roel Spilker. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -package lombok.eclipse.agent; - -import org.mangosdk.spi.ProviderFor; -import org.objectweb.asm.ClassAdapter; -import org.objectweb.asm.ClassReader; -import org.objectweb.asm.ClassVisitor; -import org.objectweb.asm.ClassWriter; -import org.objectweb.asm.MethodAdapter; -import org.objectweb.asm.MethodVisitor; -import org.objectweb.asm.Opcodes; - -/** - * Transforms Eclipse's <code>org.eclipse.jdt.core.dom.ASTConverter</code> class, which sometimes rescans bits and pieces - * of source files because Eclipse's own AST doesn't actually have enough information for eclipse (why they don't just fix - * the AST tree generator is beyond me). At any rate, for catch blocks generated by lombok, eclipse tries to rescan the - * source file to find the source position of the catch statement, which will of course fail as there's nothing there. - * We will fix the code to return the original starting position, which is a pretty good simile, instead of '-1', which - * screws up all sorts of things. - * - * Transformations applied:<ul> - * <li>The <code>retrieveStartingCatchPosition(int, int)</code> method is instrumented to return its first parameter - * instead of the constant -1.</li></ul> - */ -@ProviderFor(EclipseTransformer.class) -public class EclipseASTConverterTransformer implements EclipseTransformer { - public byte[] transform(byte[] classfileBuffer) { - ClassReader reader = new ClassReader(classfileBuffer); - ClassWriter writer = new ClassWriter(reader, 0); - - ClassAdapter adapter = new ASTConverterPatcherAdapter(writer); - reader.accept(adapter, 0); - return writer.toByteArray(); - } - - private static class ASTConverterPatcherAdapter extends ClassAdapter { - public ASTConverterPatcherAdapter(ClassVisitor cv) { - super(cv); - } - - @Override public MethodVisitor visitMethod(int access, String name, String desc, - String signature, String[] exceptions) { - MethodVisitor writerVisitor = super.visitMethod(access, name, desc, signature, exceptions); - if ( !name.equals("retrieveStartingCatchPosition") ) return writerVisitor; - - return new RetrieveStartingCatchPositionPatcher(writerVisitor); - } - } - - static class RetrieveStartingCatchPositionPatcher extends MethodAdapter { - RetrieveStartingCatchPositionPatcher(MethodVisitor mv) { - super(mv); - } - - int count = 0; - @Override public void visitInsn(int opcode) { - if ( opcode == Opcodes.IRETURN ) { - if ( count++ == 0 ) { - super.visitInsn(opcode); - return; - } - //replaces: "return -1" with "return [firstParam]"; - super.visitInsn(Opcodes.POP); - super.visitVarInsn(Opcodes.ILOAD, 1); - super.visitInsn(Opcodes.IRETURN); - } else { - super.visitInsn(opcode); - } - } - } - - @Override public String getTargetClassName() { - return "org/eclipse/jdt/core/dom/ASTConverter"; - } -} |