/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file:

 *

 * 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 jdk.internal.org.objectweb.asm.commons;

import jdk.internal.org.objectweb.asm.AnnotationVisitor;

import jdk.internal.org.objectweb.asm.Handle;

import jdk.internal.org.objectweb.asm.Label;

import jdk.internal.org.objectweb.asm.MethodVisitor;

import jdk.internal.org.objectweb.asm.Opcodes;

import jdk.internal.org.objectweb.asm.TypePath;

/**

 * A {@link LocalVariablesSorter} for type mapping.

 *

 * @author Eugene Kuleshov

 */

public class RemappingMethodAdapter extends LocalVariablesSorter {

    protected final Remapper remapper;

    public RemappingMethodAdapter(final int access, final String desc,

            final MethodVisitor mv, final Remapper remapper) {

        this(Opcodes.ASM5, access, desc, mv, remapper);

    }

    protected RemappingMethodAdapter(final int api, final int access,

            final String desc, final MethodVisitor mv, final Remapper remapper) {

        super(api, access, desc, mv);

        this.remapper = remapper;

    }

    @Override

    public AnnotationVisitor visitAnnotationDefault() {

        AnnotationVisitor av = super.visitAnnotationDefault();

        return av == null ? av : new RemappingAnnotationAdapter(av, remapper);

    }

    @Override

    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {

        AnnotationVisitor av = super.visitAnnotation(remapper.mapDesc(desc),

                visible);

        return av == null ? av : new RemappingAnnotationAdapter(av, remapper);

    }

    @Override

    public AnnotationVisitor visitTypeAnnotation(int typeRef,

            TypePath typePath, String desc, boolean visible) {

        AnnotationVisitor av = super.visitTypeAnnotation(typeRef, typePath,

                remapper.mapDesc(desc), visible);

        return av == null ? av : new RemappingAnnotationAdapter(av, remapper);

    }

    @Override

    public AnnotationVisitor visitParameterAnnotation(int parameter,

            String desc, boolean visible) {

        AnnotationVisitor av = super.visitParameterAnnotation(parameter,

                remapper.mapDesc(desc), visible);

        return av == null ? av : new RemappingAnnotationAdapter(av, remapper);

    }

    @Override

    public void visitFrame(int type, int nLocal, Object[] local, int nStack,

            Object[] stack) {

        super.visitFrame(type, nLocal, remapEntries(nLocal, local), nStack,

                remapEntries(nStack, stack));

    }

    private Object[] remapEntries(int n, Object[] entries) {

        for (int i = 0; i < n; i++) {

            if (entries[i] instanceof String) {

                Object[] newEntries = new Object[n];

                if (i > 0) {

                    System.arraycopy(entries, 0, newEntries, 0, i);

                }

                do {

                    Object t = entries[i];

                    newEntries[i++] = t instanceof String ? remapper

                            .mapType((String) t) : t;

                } while (i < n);

                return newEntries;

            }

        }

        return entries;

    }

    @Override

    public void visitFieldInsn(int opcode, String owner, String name,

            String desc) {

        super.visitFieldInsn(opcode, remapper.mapType(owner),

                remapper.mapFieldName(owner, name, desc),

                remapper.mapDesc(desc));

    }

    @Deprecated

    @Override

    public void visitMethodInsn(final int opcode, final String owner,

            final String name, final String desc) {

        if (api >= Opcodes.ASM5) {

            super.visitMethodInsn(opcode, owner, name, desc);

            return;

        }

        doVisitMethodInsn(opcode, owner, name, desc,

                opcode == Opcodes.INVOKEINTERFACE);

    }

    @Override

    public void visitMethodInsn(final int opcode, final String owner,

            final String name, final String desc, final boolean itf) {

        if (api < Opcodes.ASM5) {

            super.visitMethodInsn(opcode, owner, name, desc, itf);

            return;

        }

        doVisitMethodInsn(opcode, owner, name, desc, itf);

    }

    private void doVisitMethodInsn(int opcode, String owner, String name,

            String desc, boolean itf) {

        // Calling super.visitMethodInsn requires to call the correct version

        // depending on this.api (otherwise infinite loops can occur). To

        // simplify and to make it easier to automatically remove the backward

        // compatibility code, we inline the code of the overridden method here.

        // IMPORTANT: THIS ASSUMES THAT visitMethodInsn IS NOT OVERRIDDEN IN

        // LocalVariableSorter.

        if (mv != null) {

            mv.visitMethodInsn(opcode, remapper.mapType(owner),

                    remapper.mapMethodName(owner, name, desc),

                    remapper.mapMethodDesc(desc), itf);

        }

    }

    @Override

    public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,

            Object... bsmArgs) {

        for (int i = 0; i < bsmArgs.length; i++) {

            bsmArgs[i] = remapper.mapValue(bsmArgs[i]);

        }

        super.visitInvokeDynamicInsn(

                remapper.mapInvokeDynamicMethodName(name, desc),

                remapper.mapMethodDesc(desc), (Handle) remapper.mapValue(bsm),

                bsmArgs);

    }

    @Override

    public void visitTypeInsn(int opcode, String type) {

        super.visitTypeInsn(opcode, remapper.mapType(type));

    }

    @Override

    public void visitLdcInsn(Object cst) {

        super.visitLdcInsn(remapper.mapValue(cst));

    }

    @Override

    public void visitMultiANewArrayInsn(String desc, int dims) {

        super.visitMultiANewArrayInsn(remapper.mapDesc(desc), dims);

    }

    @Override

    public AnnotationVisitor visitInsnAnnotation(int typeRef,

            TypePath typePath, String desc, boolean visible) {

        AnnotationVisitor av = super.visitInsnAnnotation(typeRef, typePath,

                remapper.mapDesc(desc), visible);

        return av == null ? av : new RemappingAnnotationAdapter(av, remapper);

    }

    @Override

    public void visitTryCatchBlock(Label start, Label end, Label handler,

            String type) {

        super.visitTryCatchBlock(start, end, handler, type == null ? null

                : remapper.mapType(type));

    }

    @Override

    public AnnotationVisitor visitTryCatchAnnotation(int typeRef,

            TypePath typePath, String desc, boolean visible) {

        AnnotationVisitor av = super.visitTryCatchAnnotation(typeRef, typePath,

                remapper.mapDesc(desc), visible);

        return av == null ? av : new RemappingAnnotationAdapter(av, remapper);

    }

    @Override

    public void visitLocalVariable(String name, String desc, String signature,

            Label start, Label end, int index) {

        super.visitLocalVariable(name, remapper.mapDesc(desc),

                remapper.mapSignature(signature, true), start, end, index);

    }

    @Override

    public AnnotationVisitor visitLocalVariableAnnotation(int typeRef,

            TypePath typePath, Label[] start, Label[] end, int[] index,

            String desc, boolean visible) {

        AnnotationVisitor av = super.visitLocalVariableAnnotation(typeRef,

                typePath, start, end, index, remapper.mapDesc(desc), visible);

        return av == null ? av : new RemappingAnnotationAdapter(av, remapper);

    }

}