ASM: a very small and fast Java bytecode manipulation framework
Copyright (c) 2000-2007 INRIA, France Telecom
All rights reserved.
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modification, are permitted provided that the following conditions
are met:
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   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) 2000-2007 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.glassfish.pfl.objectweb.asm.optimizer;

import org.glassfish.pfl.objectweb.asm.AnnotationVisitor;
import org.glassfish.pfl.objectweb.asm.Label;
import org.glassfish.pfl.objectweb.asm.MethodAdapter;
import org.glassfish.pfl.objectweb.asm.MethodVisitor;
import org.glassfish.pfl.objectweb.asm.Opcodes;

An MethodVisitor that collects the Constants of the methods it visits. 
Author:
Eric Bruneton/**
 * An {@link MethodVisitor} that collects the {@link Constant}s of the methods
 * it visits.
 * 
 * @author Eric Bruneton
 */
public class MethodConstantsCollector extends MethodAdapter {

    private final ConstantPool cp;

    public MethodConstantsCollector(
        final MethodVisitor mv,
        final ConstantPool cp)
    {
        super(mv);
        this.cp = cp;
    }

    public AnnotationVisitor visitAnnotationDefault() {
        cp.newUTF8("AnnotationDefault");
        return new AnnotationConstantsCollector(mv.visitAnnotationDefault(), cp);
    }

    public AnnotationVisitor visitAnnotation(
        final String desc,
        final boolean visible)
    {
        cp.newUTF8(desc);
        if (visible) {
            cp.newUTF8("RuntimeVisibleAnnotations");
        } else {
            cp.newUTF8("RuntimeInvisibleAnnotations");
        }
        return new AnnotationConstantsCollector(mv.visitAnnotation(desc,
                visible), cp);
    }

    public AnnotationVisitor visitParameterAnnotation(
        final int parameter,
        final String desc,
        final boolean visible)
    {
        cp.newUTF8(desc);
        if (visible) {
            cp.newUTF8("RuntimeVisibleParameterAnnotations");
        } else {
            cp.newUTF8("RuntimeInvisibleParameterAnnotations");
        }
        return new AnnotationConstantsCollector(mv.visitParameterAnnotation(parameter,
                desc,
                visible),
                cp);
    }

    public void visitTypeInsn(final int opcode, final String type) {
        cp.newClass(type);
        mv.visitTypeInsn(opcode, type);
    }

    public void visitFieldInsn(
        final int opcode,
        final String owner,
        final String name,
        final String desc)
    {
        cp.newField(owner, name, desc);
        mv.visitFieldInsn(opcode, owner, name, desc);
    }

    public void visitMethodInsn(
        final int opcode,
        final String owner,
        final String name,
        final String desc)
    {
        boolean itf = opcode == Opcodes.INVOKEINTERFACE;
        cp.newMethod(owner, name, desc, itf);
        mv.visitMethodInsn(opcode, owner, name, desc);
    }

    public void visitLdcInsn(final Object cst) {
        cp.newConst(cst);
        mv.visitLdcInsn(cst);
    }

    public void visitMultiANewArrayInsn(final String desc, final int dims) {
        cp.newClass(desc);
        mv.visitMultiANewArrayInsn(desc, dims);
    }

    public void visitTryCatchBlock(
        final Label start,
        final Label end,
        final Label handler,
        final String type)
    {
        if (type != null) {
            cp.newClass(type);
        }
        mv.visitTryCatchBlock(start, end, handler, type);
    }

    public void visitLocalVariable(
        final String name,
        final String desc,
        final String signature,
        final Label start,
        final Label end,
        final int index)
    {
        if (signature != null) {
            cp.newUTF8("LocalVariableTypeTable");
            cp.newUTF8(name);
            cp.newUTF8(signature);
        }
        cp.newUTF8("LocalVariableTable");
        cp.newUTF8(name);
        cp.newUTF8(desc);
        mv.visitLocalVariable(name, desc, signature, start, end, index);
    }

    public void visitLineNumber(final int line, final Label start) {
        cp.newUTF8("LineNumberTable");
        mv.visitLineNumber(line, start);
    }

    public void visitMaxs(final int maxStack, final int maxLocals) {
        cp.newUTF8("Code");
        mv.visitMaxs(maxStack, maxLocals);
    }
}