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: */package org.ejb3unit.asm.optimizer;
030:
031: import java.io.FileInputStream;
032: import java.io.IOException;
033: import java.util.HashSet;
034: import java.util.Properties;
035: import java.util.Set;
036:
037: import org.ejb3unit.asm.Type;
038:
039: /**
040: * A mapping from names to names, used to rename classes, fields and methods.
041: *
042: * @author Eric Bruneton
043: */
044: public class NameMapping extends Properties {
045:
046: public final Set unused;
047:
048: public NameMapping(final String file) throws IOException {
049: load(new FileInputStream(file));
050: unused = new HashSet(keySet());
051: }
052:
053: public String map(final String name) {
054: String s = (String) get(name);
055: if (s == null) {
056: int p = name.indexOf('.');
057: if (p != -1) {
058: int q = name.indexOf('(');
059: if (q != -1) {
060: s = name.substring(p + 1, q);
061: } else {
062: s = name.substring(p + 1);
063: }
064: } else {
065: s = name;
066: }
067: } else {
068: unused.remove(name);
069: }
070: return s;
071: }
072:
073: public String fix(final String desc) {
074: if (desc.startsWith("(")) {
075: Type[] arguments = Type.getArgumentTypes(desc);
076: Type result = Type.getReturnType(desc);
077: for (int i = 0; i < arguments.length; ++i) {
078: arguments[i] = fix(arguments[i]);
079: }
080: result = fix(result);
081: return Type.getMethodDescriptor(result, arguments);
082: } else {
083: return fix(Type.getType(desc)).getDescriptor();
084: }
085: }
086:
087: private Type fix(final Type t) {
088: if (t.getSort() == Type.OBJECT) {
089: return Type.getObjectType(map(t.getInternalName()));
090: } else if (t.getSort() == Type.ARRAY) {
091: String s = fix(t.getElementType()).getDescriptor();
092: for (int i = 0; i < t.getDimensions(); ++i) {
093: s = "[" + s;
094: }
095: return Type.getType(s);
096: } else {
097: return t;
098: }
099: }
100: }
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