Example usage for org.objectweb.asm.tree MethodNode MethodNode

Introduction

In this page you can find the example usage for org.objectweb.asm.tree MethodNode MethodNode.

Prototype

public MethodNode(final int api, final int access, final String name, final String descriptor,
        final String signature, final String[] exceptions) 

Source Link

Document

Constructs a new MethodNode .

Usage

From source file:com.thomas15v.packetlib.codegenerator.asm.ASMHelper.java

License:MIT License

/**
 * Generate a forwarding method of the form
 * "T name() { return Class.forward(this); }".
 *
 * @param clazz Class to generate new method on
 * @param name Name of method to generate
 * @param forwardname Name of method to call
 * @param rettype Return type of method//from w w w  .j  ava2  s .  c om
 * @param fowardtype Forward type
 * @param thistype Type to treat 'this' as for overload searching purposes
 */
public static void generateForwardingToStaticMethod(ClassNode clazz, String name, String forwardname,
        Type rettype, Type fowardtype, Type thistype) {
    MethodNode method = new MethodNode(Opcodes.ASM5, Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC, name,
            "()" + rettype.getDescriptor(), null, null);

    ASMHelper.populateForwardingToStaticMethod(method, forwardname, rettype, thistype, fowardtype);

    clazz.methods.add(method);
}

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From source file:com.thomas15v.packetlib.codegenerator.asm.ASMHelper.java

License:MIT License

/**
 * Generate a forwarding method of the form
 * "T name(S object) { return object.forward(); }".
 *
 * @param clazz Class to generate new method on
 * @param name Name of method to generate
 * @param forwardname Name of method to call
 * @param rettype Return type of method/*  w  w w .j  a v a  2s  . c  o  m*/
 * @param argtype Type of object to call method on
 */
public static void generateForwardingMethod(ClassNode clazz, String name, String forwardname, Type rettype,
        Type argtype) {
    MethodNode method = new MethodNode(Opcodes.ASM5, Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC, name,
            "()" + rettype.getDescriptor(), null, null);

    ASMHelper.populateForwardingMethod(method, forwardname, rettype, argtype, Type.getObjectType(clazz.name));

    clazz.methods.add(method);
}

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From source file:de.tuberlin.uebb.jbop.optimizer.methodsplitter.MethodSplitter.java

License:Open Source License

@Override
public InsnList optimize(final InsnList original, final MethodNode methodNode) throws JBOPClassException {

    LocalVariablesSorter sorter = new LocalVariablesSorter(methodNode.access, methodNode.desc,
            new EmptyMethodVisitor(Opcodes.ASM5));
    methodNode.accept(sorter);//ww w.  j  a  v a 2  s  . c  om

    if (getLength(methodNode) < maxInsns) {
        return clean(original);
    }

    final List<Block> blocks = getBlocks(original, methodNode);

    final String baseName = methodNode.name;
    final String[] exceptions = getExceptions(methodNode);

    final InsnList returnList = new InsnList();
    InsnList list = returnList;

    Block block = blocks.get(0);
    block.renameInsns(block.getVarMap());

    final String name = baseName + "__split__part__";
    final Type endType = Type.getReturnType(methodNode.desc);
    for (int i = 1; i < blocks.size(); ++i) {
        final Map<Integer, Integer> paramRenameMap = block.getVarMap();
        add(list, block.getInstructions(), original);
        block = blocks.get(i);
        block.renameInsns(paramRenameMap);
        final String methodDescriptor = block.getDescriptor();
        final String newMethodName = name + block.getBlockNumber();
        final MethodNode splitMethod = new MethodNode(Opcodes.ASM5, ACCESS, newMethodName, methodDescriptor,
                null, exceptions);
        additionalMethods.add(splitMethod);

        list.add(new VarInsnNode(Opcodes.ALOAD, 0));
        list.add(block.getPushParameters());
        list.add(new MethodInsnNode(Opcodes.INVOKESPECIAL, classNode.name, splitMethod.name, methodDescriptor));
        list.add(new InsnNode(endType.getOpcode(IRETURN)));
        sorter = new LocalVariablesSorter(splitMethod.access, splitMethod.desc,
                new EmptyMethodVisitor(Opcodes.ASM5));
        splitMethod.accept(sorter);
        list = splitMethod.instructions;
    }
    add(list, block.getInstructions(), original);
    return returnList;
}

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From source file:forgefix.ForgeFixTransformer.java

License:LGPL

@Override
public byte[] transform(String name, String transformedName, byte[] bytes) {
    if (bytes == null)
        return bytes;

    if (transformedName.equals("com.xcompwiz.mystcraft.world.gen.structure.ComponentVillageArchivistHouse")
            || (transformedName.equals(//ww  w .ja  v a  2s.  c o m
                    "com.xcompwiz.mystcraft.world.gen.structure.ComponentScatteredFeatureSmallLibrary"))) {
        ClassNode classNode = new ClassNode();
        ClassReader classReader = new ClassReader(bytes);

        classReader.accept(classNode, 0);

        MethodNode vanillaMethod = null;
        for (MethodNode method : classNode.methods) {
            if (method.name.equals("generateStructureLectern")) {
                vanillaMethod = method;
            }
        }

        MethodNode moddedMethod = new MethodNode(ASM4, ACC_PROTECTED, "generateStructureLectern",
                getMethodDescriptor(BOOLEAN_TYPE), null, null);
        moddedMethod.desc = "(Lnet/minecraft/world/World;Lnet/minecraft/world/gen/structure/StructureBoundingBox;Ljava/util/Random;IIIIILnet/minecraftforge/common/ChestGenHooks;)Z";
        moddedMethod.instructions.add(new InsnNode(ICONST_0));
        moddedMethod.instructions.add(new InsnNode(IRETURN));

        if (moddedMethod != null) {
            classNode.methods.remove(vanillaMethod);
            moddedMethod.accept(classNode);

            ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
            classNode.accept(writer);
            return writer.toByteArray();
        }
    }

    return bytes;
}

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From source file:jvstm.atomic.ProcessParNestAnnotations.java

License:Open Source License

private static MethodNode generateStaticCallableCreation(ClassNode classNode, String className,
        String callableClass, MethodNode mn) {
    MethodNode staticMethod = new MethodNode(V1_6, mn.access | ACC_STATIC, mn.name + "$static$callable$creator",
            "(L" + className + ";" + mn.desc.substring(1, mn.desc.indexOf(')') + 1) + "L" + callableClass + ";",
            mn.signature, new String[0]);
    InsnList content = new InsnList();
    content.add(new TypeInsnNode(NEW, callableClass));
    content.add(new InsnNode(DUP));

    int pos = 0;//from  ww w.jav  a2s . c o  m
    // Push the instance of the class being modified (first argument of this
    // synthetized method)
    content.add(new VarInsnNode(ALOAD, pos++));
    // Push arguments of original method on the stack for callable creation
    for (Type t : Type.getArgumentTypes(mn.desc)) {
        content.add(new VarInsnNode(t.getOpcode(ILOAD), pos));
        pos += t.getSize();
    }

    // Instantiate the callable
    content.add(new MethodInsnNode(INVOKESPECIAL, callableClass, "<init>", getCallableCtorDesc(className, mn)));

    // Return it from the static method
    content.add(new InsnNode(ARETURN));

    staticMethod.instructions.add(content);
    return staticMethod;
}

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From source file:me.themallard.bitmmo.impl.plugin.inputactiontracker.InputActionTrackerPlugin.java

License:Open Source License

private void createSetKeyDown(ClassNode cn) {
    InsnList insn = new InsnList();

    MethodNode mn = new MethodNode(cn, ACC_PUBLIC, "setKeyDown", "(LHTMud/InputActionTracker$ActionType;Z)V",
            null, null);//from  www . j a va2 s. com

    // ((Key) this.enumMap.get(actionType)).setKeyPressed(value);

    // aload0
    // getfield this.enumMap Ljava/util/EnumMap;
    // aload1
    // invokevirtual \
    // java/util/EnumMap.get((Ljava/lang/Object;)Ljava/lang/Object;);
    // checkcast Key
    // aload2
    // invokevirtual Key.setKeyPressed((Z)V);
    // return

    mn.visitMaxs(3, 3);

    insn.add(new VarInsnNode(ALOAD, 0));

    FieldNode enumMap = cn.getField(null, "Ljava/util/EnumMap;");
    insn.add(new FieldInsnNode(GETFIELD, cn.name, enumMap.name, enumMap.desc));

    insn.add(new VarInsnNode(ALOAD, 1));

    insn.add(new MethodInsnNode(INVOKEVIRTUAL, "java/util/EnumMap", "get",
            "(Ljava/lang/Object;)Ljava/lang/Object;", false));

    insn.add(new TypeInsnNode(CHECKCAST, "Key"));

    insn.add(new VarInsnNode(ILOAD, 2));

    insn.add(new MethodInsnNode(INVOKEVIRTUAL, "Key", "setKeyPressed", "(Z)V", false));

    insn.add(new InsnNode(RETURN));

    mn.instructions.insert(insn);

    cn.methods.add(mn);
}

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From source file:naftoreiclag.dontdigleft.transformer.ResizePlayerBoudingBox.java

License:Open Source License

@Override
public byte[] transform(String name, String transformedName, byte[] basicClass) {
    if (name.equals("net.minecraft.entity.player.EntityPlayer") || name.equals("xl")) {
        ClassNode classNode = new ClassNode();
        ClassReader classReader = new ClassReader(basicClass);

        classReader.accept(classNode, 0);

        MethodNode mv = new MethodNode(ASM4, ACC_PROTECTED, "setSize", "(FF)V", null, null);

        mv.visitCode();//from w w w. j  a va  2 s .c  o m
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(FLOAD, 1);
        mv.visitLdcInsn(new Float("0.6"));
        mv.visitInsn(FCMPL);
        Label l1 = new Label();
        mv.visitJumpInsn(IFNE, l1);
        mv.visitVarInsn(FLOAD, 2);
        mv.visitLdcInsn(new Float("1.8"));
        mv.visitInsn(FCMPL);
        mv.visitJumpInsn(IFNE, l1);
        Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLdcInsn(new Float("0.6"));
        mv.visitVarInsn(FSTORE, 1);
        Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLdcInsn(new Float("0.6"));
        mv.visitVarInsn(FSTORE, 2);
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(FLOAD, 1);
        mv.visitVarInsn(FLOAD, 2);
        mv.visitMethodInsn(INVOKESPECIAL, "net/minecraft/entity/Entity", "setSize", "(FF)V");
        Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitInsn(RETURN);
        Label l5 = new Label();
        mv.visitLabel(l5);
        mv.visitLocalVariable("this", "Lnet/minecraft/entity/player/EntityPlayer;", null, l0, l5, 0);
        mv.visitLocalVariable("par1", "F", null, l0, l5, 1);
        mv.visitLocalVariable("par2", "F", null, l0, l5, 2);
        mv.visitMaxs(3, 3);
        mv.visitEnd();

        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
        classNode.accept(cw);
        mv.accept(cw);

        return cw.toByteArray();
    } else {
        return basicClass;
    }
}

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From source file:net.enilink.composition.asm.meta.ClassInfo.java

License:Open Source License

public MethodVisitor visitMethod(final int access, final String name, final String desc, final String signature,
        final String[] exceptions) {
    MethodNode mn = new MethodNode(Opcodes.ASM5, access, name, desc, signature, exceptions) {
        public void visitEnd() {
            instructions.clear();// ww w .j  a v  a2 s. c om
        }
    };
    methods.put(new Method(name, desc), mn);
    return mn;
}

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From source file:org.jacoco.core.internal.analysis.filter.AnnotationGeneratedFilterTest.java

License:Open Source License

@Test
public void should_filter_methods_annotated_with_runtime_visible_org_groovy_transform_Generated() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0, "hashCode", "()I", null, null);
    m.visitAnnotation("Lgroovy/transform/Generated;", true);

    m.visitInsn(Opcodes.ICONST_0);/*from w  w  w.  ja va  2  s .  c  om*/
    m.visitInsn(Opcodes.IRETURN);

    filter.filter(m, context, output);

    assertMethodIgnored(m);
}

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From source file:org.jacoco.core.internal.analysis.filter.AnnotationGeneratedFilterTest.java

License:Open Source License

@Test
public void should_filter_methods_annotated_with_runtime_invisible_lombok_Generated() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0, "hashCode", "()I", null, null);
    m.visitAnnotation("Llombok/Generated;", false);

    m.visitInsn(Opcodes.ICONST_0);/*  w w  w.ja  v a 2 s. c om*/
    m.visitInsn(Opcodes.IRETURN);

    filter.filter(m, context, output);

    assertMethodIgnored(m);
}

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