ASM: a very small and fast Java bytecode manipulation framework
Copyright (c) 2000-2011 INRIA, France Telecom
All rights reserved.
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modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holders nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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/***
 * ASM: a very small and fast Java bytecode manipulation framework
 * Copyright (c) 2000-2011 INRIA, France Telecom
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.objectweb.asm.util;

import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.TypePath;

A MethodVisitor that prints the methods it visits with a Printer. 
Author:
Eric Bruneton/**
 * A {@link MethodVisitor} that prints the methods it visits with a
 * {@link Printer}.
 * 
 * @author Eric Bruneton
 */
public final class TraceMethodVisitor extends MethodVisitor {

    public final Printer p;

    public TraceMethodVisitor(final Printer p) {
        this(null, p);
    }

    public TraceMethodVisitor(final MethodVisitor mv, final Printer p) {
        super(Opcodes.ASM5, mv);
        this.p = p;
    }

    @Override
    public void visitParameter(String name, int access) {
        p.visitParameter(name, access);
        super.visitParameter(name, access);
    }

    @Override
    public AnnotationVisitor visitAnnotation(final String desc,
            final boolean visible) {
        Printer p = this.p.visitMethodAnnotation(desc, visible);
        AnnotationVisitor av = mv == null ? null : mv.visitAnnotation(desc,
                visible);
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public AnnotationVisitor visitTypeAnnotation(int typeRef,
            TypePath typePath, String desc, boolean visible) {
        Printer p = this.p.visitMethodTypeAnnotation(typeRef, typePath, desc,
                visible);
        AnnotationVisitor av = mv == null ? null : mv.visitTypeAnnotation(
                typeRef, typePath, desc, visible);
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public void visitAttribute(final Attribute attr) {
        p.visitMethodAttribute(attr);
        super.visitAttribute(attr);
    }

    @Override
    public AnnotationVisitor visitAnnotationDefault() {
        Printer p = this.p.visitAnnotationDefault();
        AnnotationVisitor av = mv == null ? null : mv.visitAnnotationDefault();
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public AnnotationVisitor visitParameterAnnotation(final int parameter,
            final String desc, final boolean visible) {
        Printer p = this.p.visitParameterAnnotation(parameter, desc, visible);
        AnnotationVisitor av = mv == null ? null : mv.visitParameterAnnotation(
                parameter, desc, visible);
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public void visitCode() {
        p.visitCode();
        super.visitCode();
    }

    @Override
    public void visitFrame(final int type, final int nLocal,
            final Object[] local, final int nStack, final Object[] stack) {
        p.visitFrame(type, nLocal, local, nStack, stack);
        super.visitFrame(type, nLocal, local, nStack, stack);
    }

    @Override
    public void visitInsn(final int opcode) {
        p.visitInsn(opcode);
        super.visitInsn(opcode);
    }

    @Override
    public void visitIntInsn(final int opcode, final int operand) {
        p.visitIntInsn(opcode, operand);
        super.visitIntInsn(opcode, operand);
    }

    @Override
    public void visitVarInsn(final int opcode, final int var) {
        p.visitVarInsn(opcode, var);
        super.visitVarInsn(opcode, var);
    }

    @Override
    public void visitTypeInsn(final int opcode, final String type) {
        p.visitTypeInsn(opcode, type);
        super.visitTypeInsn(opcode, type);
    }

    @Override
    public void visitFieldInsn(final int opcode, final String owner,
            final String name, final String desc) {
        p.visitFieldInsn(opcode, owner, name, desc);
        super.visitFieldInsn(opcode, owner, name, desc);
    }

    @Deprecated
    @Override
    public void visitMethodInsn(int opcode, String owner, String name,
            String desc) {
        if (api >= Opcodes.ASM5) {
            super.visitMethodInsn(opcode, owner, name, desc);
            return;
        }
        p.visitMethodInsn(opcode, owner, name, desc);
        if (mv != null) {
            mv.visitMethodInsn(opcode, owner, name, desc);
        }
    }

    @Override
    public void visitMethodInsn(int opcode, String owner, String name,
            String desc, boolean itf) {
        if (api < Opcodes.ASM5) {
            super.visitMethodInsn(opcode, owner, name, desc, itf);
            return;
        }
        p.visitMethodInsn(opcode, owner, name, desc, itf);
        if (mv != null) {
            mv.visitMethodInsn(opcode, owner, name, desc, itf);
        }
    }

    @Override
    public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,
            Object... bsmArgs) {
        p.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs);
        super.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs);
    }

    @Override
    public void visitJumpInsn(final int opcode, final Label label) {
        p.visitJumpInsn(opcode, label);
        super.visitJumpInsn(opcode, label);
    }

    @Override
    public void visitLabel(final Label label) {
        p.visitLabel(label);
        super.visitLabel(label);
    }

    @Override
    public void visitLdcInsn(final Object cst) {
        p.visitLdcInsn(cst);
        super.visitLdcInsn(cst);
    }

    @Override
    public void visitIincInsn(final int var, final int increment) {
        p.visitIincInsn(var, increment);
        super.visitIincInsn(var, increment);
    }

    @Override
    public void visitTableSwitchInsn(final int min, final int max,
            final Label dflt, final Label... labels) {
        p.visitTableSwitchInsn(min, max, dflt, labels);
        super.visitTableSwitchInsn(min, max, dflt, labels);
    }

    @Override
    public void visitLookupSwitchInsn(final Label dflt, final int[] keys,
            final Label[] labels) {
        p.visitLookupSwitchInsn(dflt, keys, labels);
        super.visitLookupSwitchInsn(dflt, keys, labels);
    }

    @Override
    public void visitMultiANewArrayInsn(final String desc, final int dims) {
        p.visitMultiANewArrayInsn(desc, dims);
        super.visitMultiANewArrayInsn(desc, dims);
    }

    @Override
    public AnnotationVisitor visitInsnAnnotation(int typeRef,
            TypePath typePath, String desc, boolean visible) {
        Printer p = this.p
                .visitInsnAnnotation(typeRef, typePath, desc, visible);
        AnnotationVisitor av = mv == null ? null : mv.visitInsnAnnotation(
                typeRef, typePath, desc, visible);
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public void visitTryCatchBlock(final Label start, final Label end,
            final Label handler, final String type) {
        p.visitTryCatchBlock(start, end, handler, type);
        super.visitTryCatchBlock(start, end, handler, type);
    }

    @Override
    public AnnotationVisitor visitTryCatchAnnotation(int typeRef,
            TypePath typePath, String desc, boolean visible) {
        Printer p = this.p.visitTryCatchAnnotation(typeRef, typePath, desc,
                visible);
        AnnotationVisitor av = mv == null ? null : mv.visitTryCatchAnnotation(
                typeRef, typePath, desc, visible);
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public void visitLocalVariable(final String name, final String desc,
            final String signature, final Label start, final Label end,
            final int index) {
        p.visitLocalVariable(name, desc, signature, start, end, index);
        super.visitLocalVariable(name, desc, signature, start, end, index);
    }

    @Override
    public AnnotationVisitor visitLocalVariableAnnotation(int typeRef,
            TypePath typePath, Label[] start, Label[] end, int[] index,
            String desc, boolean visible) {
        Printer p = this.p.visitLocalVariableAnnotation(typeRef, typePath,
                start, end, index, desc, visible);
        AnnotationVisitor av = mv == null ? null : mv
                .visitLocalVariableAnnotation(typeRef, typePath, start, end,
                        index, desc, visible);
        return new TraceAnnotationVisitor(av, p);
    }

    @Override
    public void visitLineNumber(final int line, final Label start) {
        p.visitLineNumber(line, start);
        super.visitLineNumber(line, start);
    }

    @Override
    public void visitMaxs(final int maxStack, final int maxLocals) {
        p.visitMaxs(maxStack, maxLocals);
        super.visitMaxs(maxStack, maxLocals);
    }

    @Override
    public void visitEnd() {
        p.visitMethodEnd();
        super.visitEnd();
    }
}