Subversion Repositories openrisc

/***

 * ASM: a very small and fast Java bytecode manipulation framework

 * Copyright (c) 2000-2005 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.optimizer;

import java.io.FileInputStream;

import java.io.IOException;

import java.util.HashSet;

import java.util.Properties;

import java.util.Set;

import org.objectweb.asm.Type;

/**

 * A mapping from names to names, used to rename classes, fields and methods.

 *

 * @author Eric Bruneton

 */

public class NameMapping extends Properties {

    public final Set unused;

    public NameMapping(final String file) throws IOException {

        load(new FileInputStream(file));

        unused = new HashSet(keySet());

    }

    public String map(final String name) {

        String s = (String) get(name);

        if (s == null) {

            int p = name.indexOf('.');

            if (p != -1) {

                int q = name.indexOf('(');

                if (q != -1) {

                    s = name.substring(p + 1, q);

                } else {

                    s = name.substring(p + 1);

                }

            } else {

                s = name;

            }

        } else {

            unused.remove(name);

        }

        return s;

    }

    public String fix(final String desc) {

        if (desc.startsWith("(")) {

            Type[] arguments = Type.getArgumentTypes(desc);

            Type result = Type.getReturnType(desc);

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

                arguments[i] = fix(arguments[i]);

            }

            result = fix(result);

            return Type.getMethodDescriptor(result, arguments);

        } else {

            return fix(Type.getType(desc)).getDescriptor();

        }

    }

    private Type fix(final Type t) {

        if (t.getSort() == Type.OBJECT) {

            return Type.getType("L" + map(t.getInternalName()) + ";");

        } else if (t.getSort() == Type.ARRAY) {

            String s = fix(t.getElementType()).getDescriptor();

            for (int i = 0; i < t.getDimensions(); ++i) {

                s = "[" + s;

            }

            return Type.getType(s);

        } else {

            return t;

        }

    }

}