diff options
Diffstat (limited to 'src_eclipseagent/lombok/eclipse/agent/EclipseParserTransformer.java')
| -rw-r--r-- | src_eclipseagent/lombok/eclipse/agent/EclipseParserTransformer.java | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/src_eclipseagent/lombok/eclipse/agent/EclipseParserTransformer.java b/src_eclipseagent/lombok/eclipse/agent/EclipseParserTransformer.java deleted file mode 100644 index 38917332..00000000 --- a/src_eclipseagent/lombok/eclipse/agent/EclipseParserTransformer.java +++ /dev/null @@ -1,178 +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 java.lang.reflect.Constructor; -import java.lang.reflect.InvocationTargetException; -import java.util.Collections; -import java.util.HashMap; -import java.util.Map; - -import lombok.Lombok; - -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.Label; -import org.objectweb.asm.MethodAdapter; -import org.objectweb.asm.MethodVisitor; -import org.objectweb.asm.Opcodes; - -/** - * Transforms Eclipse's <code>org.eclipse.jdt.internal.compiler.parser.Parser</code> class, - * which handles all the actual java source to AST tree conversion in eclipse. - * - * Transformations applied:<ul> - * <li>The <code>CompilationUnitDeclaration endParse(int)</code> method is instrumented to call - * the lombok framework via ClassLoaderWorkaround to TransformEclipseAST with the CompilationUnitDeclaration - * right before it returns the CompilationUnitDeclaration.</li> - * <li>The <code>getMethodBodies(CompilationUnitDeclaration)</code> is similarly instrumented; eclipse uses a - * 2-step parsing system, where the bodies of methods aren't filled in until its actually neccessary. Lombok - * gets a chance to change the AST immediately after either step.</li> - * <li>The <code>parse(MethodDeclaration, CUD)</code>, <code>parse(ConstructorDeclaration, CUD)</code> and - * <code>parse(Initializer, TypeDeclaration, CUD)</code> methods are all instrumented to not attempt to - * complete parsing a method generated by lombok, as the source positions are obviously all wrong - * (the method content isn't in the source file!) - lombok has already filled in the complete AST. - * - * Bit24 on the flags field on all ASTNode objects is used as a marker.</li></ul> - */ -@ProviderFor(EclipseTransformer.class) -public class EclipseParserTransformer implements EclipseTransformer { - private static final String COMPILER_PKG = - "Lorg/eclipse/jdt/internal/compiler/ast/"; - private static final String TARGET_STATIC_CLASS = "java/lombok/eclipse/ClassLoaderWorkaround"; - private static final String TARGET_STATIC_METHOD_NAME = "transformCompilationUnitDeclaration"; - private static final String TARGET_STATIC_METHOD_DESC = "(Ljava/lang/Object;Ljava/lang/Object;)V"; - - private static final Map<String, Class<? extends MethodVisitor>> rewriters; - - static { - Map<String, Class<? extends MethodVisitor>> map = new HashMap<String, Class<? extends MethodVisitor>>(); - map.put(String.format("endParse(I)%sCompilationUnitDeclaration;", COMPILER_PKG), EndParsePatcher.class); - map.put(String.format("getMethodBodies(%sCompilationUnitDeclaration;)V", COMPILER_PKG), GetMethodBodiesPatcher.class); - map.put(String.format("parse(%1$sMethodDeclaration;%1$sCompilationUnitDeclaration;)V", COMPILER_PKG), ParseBlockContainerPatcher.class); - map.put(String.format("parse(%1$sConstructorDeclaration;%1$sCompilationUnitDeclaration;Z)V", COMPILER_PKG), ParseBlockContainerPatcher.class); - map.put(String.format("parse(%1$sInitializer;%1$sTypeDeclaration;%1$sCompilationUnitDeclaration;)V", COMPILER_PKG), ParseBlockContainerPatcher.class); - rewriters = Collections.unmodifiableMap(map); - } - - public byte[] transform(byte[] classfileBuffer) { - ClassReader reader = new ClassReader(classfileBuffer); - ClassWriter writer = new ClassWriter(reader, 0); - - ClassAdapter adapter = new ParserPatcherAdapter(writer); - reader.accept(adapter, 0); - return writer.toByteArray(); - } - - private static class ParserPatcherAdapter extends ClassAdapter { - public ParserPatcherAdapter(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); - Class<? extends MethodVisitor> targetVisitorClass = rewriters.get(name+desc); - if ( targetVisitorClass == null ) return writerVisitor; - - try { - Constructor<? extends MethodVisitor> c = targetVisitorClass.getDeclaredConstructor(MethodVisitor.class); - c.setAccessible(true); - return c.newInstance(writerVisitor); - } catch ( InvocationTargetException e ) { - throw Lombok.sneakyThrow(e.getCause()); - } catch ( Exception e ) { - //NoSuchMethodException: We know they exist. - //IllegalAccessException: We called setAccessible. - //InstantiationException: None of these classes are abstract. - throw Lombok.sneakyThrow(e); - } - } - } - - private static final int BIT24 = 0x800000; - - static class GetMethodBodiesPatcher extends MethodAdapter { - GetMethodBodiesPatcher(MethodVisitor mv) { - super(mv); - } - - @Override public void visitInsn(int opcode) { - if ( opcode == Opcodes.RETURN ) { - //injects: ClassLoaderWorkaround.transformCUD(parser, compilationUnitDeclaration); - super.visitVarInsn(Opcodes.ALOAD, 0); - super.visitVarInsn(Opcodes.ALOAD, 1); - super.visitMethodInsn(Opcodes.INVOKESTATIC, TARGET_STATIC_CLASS, - TARGET_STATIC_METHOD_NAME, TARGET_STATIC_METHOD_DESC); - } - super.visitInsn(opcode); - } - } - - static class ParseBlockContainerPatcher extends MethodAdapter { - ParseBlockContainerPatcher(MethodVisitor mv) { - super(mv); - } - - @Override public void visitCode() { - //injects: if ( constructorDeclaration.bits & BIT24 > 0 ) return; - mv.visitVarInsn(Opcodes.ALOAD, 1); - mv.visitFieldInsn(Opcodes.GETFIELD, "org/eclipse/jdt/internal/compiler/ast/ASTNode", "bits", "I"); - mv.visitLdcInsn(Integer.valueOf(BIT24)); - mv.visitInsn(Opcodes.IAND); - Label l0 = new Label(); - mv.visitJumpInsn(Opcodes.IFLE, l0); - mv.visitInsn(Opcodes.RETURN); - mv.visitLabel(l0); - mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null); - super.visitCode(); - } - } - - static class EndParsePatcher extends MethodAdapter { - private static final String TARGET_STATIC_METHOD_NAME = "transformCompilationUnitDeclaration"; - - EndParsePatcher(MethodVisitor mv) { - super(mv); - } - - @Override public void visitInsn(int opcode) { - if ( opcode == Opcodes.ARETURN ) { - //injects: ClassLoaderWorkaround.transformCUD(parser, compilationUnitDeclaration); - super.visitInsn(Opcodes.DUP); - super.visitVarInsn(Opcodes.ALOAD, 0); - super.visitInsn(Opcodes.SWAP); - super.visitMethodInsn(Opcodes.INVOKESTATIC, TARGET_STATIC_CLASS, - TARGET_STATIC_METHOD_NAME, TARGET_STATIC_METHOD_DESC); - } - - super.visitInsn(opcode); - } - } - - @Override public String getTargetClassName() { - return "org/eclipse/jdt/internal/compiler/parser/Parser"; - } -} |