001: /*
002: * ASM: a very small and fast Java bytecode manipulation framework
003: * Copyright (c) 2000-2005 INRIA, France Telecom
004: * All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: * 1. Redistributions of source code must retain the above copyright
010: * notice, this list of conditions and the following disclaimer.
011: * 2. Redistributions in binary form must reproduce the above copyright
012: * notice, this list of conditions and the following disclaimer in the
013: * documentation and/or other materials provided with the distribution.
014: * 3. Neither the name of the copyright holders nor the names of its
015: * contributors may be used to endorse or promote products derived from
016: * this software without specific prior written permission.
017: *
018: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
020: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
021: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
022: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
024: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
025: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
026: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
027: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
028: * THE POSSIBILITY OF SUCH DAMAGE.
029: */
030: package org.objectweb.asm.optimizer;
031:
032: import java.io.FileInputStream;
033: import java.io.IOException;
034: import java.util.HashSet;
035: import java.util.Properties;
036: import java.util.Set;
037:
038: import org.objectweb.asm.Type;
039:
040: /**
041: * A mapping from names to names, used to rename classes, fields and methods.
042: *
043: * @author Eric Bruneton
044: */
045: @SuppressWarnings("unchecked")
046: public class NameMapping extends Properties {
047:
048: public final Set unused;
049:
050: public NameMapping(final String file) throws IOException {
051: load(new FileInputStream(file));
052: unused = new HashSet(keySet());
053: }
054:
055: public String map(final String name) {
056: String s = (String) get(name);
057: if (s == null) {
058: int p = name.indexOf('.');
059: if (p != -1) {
060: int q = name.indexOf('(');
061: if (q != -1) {
062: s = name.substring(p + 1, q);
063: } else {
064: s = name.substring(p + 1);
065: }
066: } else {
067: s = name;
068: }
069: } else {
070: unused.remove(name);
071: }
072: return s;
073: }
074:
075: public String fix(final String desc) {
076: if (desc.startsWith("(")) {
077: Type[] arguments = Type.getArgumentTypes(desc);
078: Type result = Type.getReturnType(desc);
079: for (int i = 0; i < arguments.length; ++i) {
080: arguments[i] = fix(arguments[i]);
081: }
082: result = fix(result);
083: return Type.getMethodDescriptor(result, arguments);
084: } else {
085: return fix(Type.getType(desc)).getDescriptor();
086: }
087: }
088:
089: private Type fix(final Type t) {
090: if (t.getSort() == Type.OBJECT) {
091: return Type.getType("L" + map(t.getInternalName()) + ";");
092: } else if (t.getSort() == Type.ARRAY) {
093: String s = fix(t.getElementType()).getDescriptor();
094: for (int i = 0; i < t.getDimensions(); ++i) {
095: s = "[" + s;
096: }
097: return Type.getType(s);
098: } else {
099: return t;
100: }
101: }
102: }
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