001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: * Free SoftwareFoundation, Inc.
023: * 59 Temple Place, Suite 330
024: * Boston, MA 02111-1307 USA
025: *
026: * @author Scott Ferguson
027: */
028:
029: package com.caucho.bytecode;
030:
031: import com.caucho.log.Log;
032:
033: import java.io.IOException;
034: import java.util.logging.Logger;
035:
036: /**
037: * Represents a field ref in the constant pool.
038: */
039: public class FieldRefConstant extends ConstantPoolEntry {
040: static private final Logger log = Log.open(FieldRefConstant.class);
041:
042: private int _classIndex;
043: private int _nameAndTypeIndex;
044:
045: /**
046: * Creates a new field ref constant.
047: */
048: FieldRefConstant(ConstantPool pool, int index, int classIndex,
049: int nameAndTypeIndex) {
050: super (pool, index);
051:
052: _classIndex = classIndex;
053: _nameAndTypeIndex = nameAndTypeIndex;
054: }
055:
056: /**
057: * Returns the class index.
058: */
059: public int getClassIndex() {
060: return _classIndex;
061: }
062:
063: /**
064: * Sets the class index.
065: */
066: public void setClassIndex(int index) {
067: _classIndex = index;
068: }
069:
070: /**
071: * Returns the class name
072: */
073: public String getClassName() {
074: return getConstantPool().getClass(_classIndex).getName();
075: }
076:
077: /**
078: * Returns the field name
079: */
080: public String getName() {
081: return getConstantPool().getNameAndType(_nameAndTypeIndex)
082: .getName();
083: }
084:
085: /**
086: * Returns the method type
087: */
088: public String getType() {
089: return getConstantPool().getNameAndType(_nameAndTypeIndex)
090: .getType();
091: }
092:
093: /**
094: * Writes the contents of the pool entry.
095: */
096: void write(ByteCodeWriter out) throws IOException {
097: out.write(ConstantPool.CP_FIELD_REF);
098: out.writeShort(_classIndex);
099: out.writeShort(_nameAndTypeIndex);
100: }
101:
102: /**
103: * Sets the method name and type
104: */
105: public void setNameAndType(String name, String type) {
106: _nameAndTypeIndex = getConstantPool()
107: .addNameAndType(name, type).getIndex();
108: }
109:
110: /**
111: * Exports to the target pool.
112: */
113: public int export(ConstantPool target) {
114: return target.addFieldRef(getClassName(), getName(), getType())
115: .getIndex();
116: }
117:
118: public String toString() {
119: return "FieldRefConstant[" + getClassName() + "." + getName()
120: + "(" + getType() + ")]";
121: }
122: }
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