/*

 * 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 java.util.ArrayList;

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

import jdk.internal.org.objectweb.asm.signature.SignatureVisitor;

/**

 * A {@link SignatureVisitor} that remaps types with a {@link Remapper}.

 *

 * @author Eugene Kuleshov

 */

public class SignatureRemapper extends SignatureVisitor {

    private final SignatureVisitor signatureVisitor;

    private final Remapper remapper;

    private ArrayList<String> classNames = new ArrayList<>();

    /**

      * Constructs a new {@link SignatureRemapper}. <i>Subclasses must not use this constructor</i>.

      * Instead, they must use the {@link #SignatureRemapper(int,SignatureVisitor,Remapper)} version.

      *

      * @param signatureVisitor the signature visitor this remapper must deleted to.

      * @param remapper the remapper to use to remap the types in the visited signature.

      */

    public SignatureRemapper(final SignatureVisitor signatureVisitor, final Remapper remapper) {

        this(/* latest api = */ Opcodes.ASM8, signatureVisitor, remapper);

    }

    /**

      * Constructs a new {@link SignatureRemapper}.

      *

      * @param api the ASM API version supported by this remapper. Must be one of {@link

      *     jdk.internal.org.objectweb.asm.Opcodes#ASM4}, {@link jdk.internal.org.objectweb.asm.Opcodes#ASM5},{@link

      *     jdk.internal.org.objectweb.asm.Opcodes#ASM6}, {@link jdk.internal.org.objectweb.asm.Opcodes#ASM7} or {@link

      *     jdk.internal.org.objectweb.asm.Opcodes#ASM8}.

      * @param signatureVisitor the signature visitor this remapper must deleted to.

      * @param remapper the remapper to use to remap the types in the visited signature.

      */

    protected SignatureRemapper(

            final int api, final SignatureVisitor signatureVisitor, final Remapper remapper) {

        super(api);

        this.signatureVisitor = signatureVisitor;

        this.remapper = remapper;

    }

    @Override

    public void visitClassType(final String name) {

        classNames.add(name);

        signatureVisitor.visitClassType(remapper.mapType(name));

    }

    @Override

    public void visitInnerClassType(final String name) {

        String outerClassName = classNames.remove(classNames.size() - 1);

        String className = outerClassName + '$' + name;

        classNames.add(className);

        String remappedOuter = remapper.mapType(outerClassName) + '$';

        String remappedName = remapper.mapType(className);

        int index =

                remappedName.startsWith(remappedOuter)

                        ? remappedOuter.length()

                        : remappedName.lastIndexOf('$') + 1;

        signatureVisitor.visitInnerClassType(remappedName.substring(index));

    }

    @Override

    public void visitFormalTypeParameter(final String name) {

        signatureVisitor.visitFormalTypeParameter(name);

    }

    @Override

    public void visitTypeVariable(final String name) {

        signatureVisitor.visitTypeVariable(name);

    }

    @Override

    public SignatureVisitor visitArrayType() {

        signatureVisitor.visitArrayType();

        return this;

    }

    @Override

    public void visitBaseType(final char descriptor) {

        signatureVisitor.visitBaseType(descriptor);

    }

    @Override

    public SignatureVisitor visitClassBound() {

        signatureVisitor.visitClassBound();

        return this;

    }

    @Override

    public SignatureVisitor visitExceptionType() {

        signatureVisitor.visitExceptionType();

        return this;

    }

    @Override

    public SignatureVisitor visitInterface() {

        signatureVisitor.visitInterface();

        return this;

    }

    @Override

    public SignatureVisitor visitInterfaceBound() {

        signatureVisitor.visitInterfaceBound();

        return this;

    }

    @Override

    public SignatureVisitor visitParameterType() {

        signatureVisitor.visitParameterType();

        return this;

    }

    @Override

    public SignatureVisitor visitReturnType() {

        signatureVisitor.visitReturnType();

        return this;

    }

    @Override

    public SignatureVisitor visitSuperclass() {

        signatureVisitor.visitSuperclass();

        return this;

    }

    @Override

    public void visitTypeArgument() {

        signatureVisitor.visitTypeArgument();

    }

    @Override

    public SignatureVisitor visitTypeArgument(final char wildcard) {

        signatureVisitor.visitTypeArgument(wildcard);

        return this;

    }

    @Override

    public void visitEnd() {

        signatureVisitor.visitEnd();

        classNames.remove(classNames.size() - 1);

    }

}