author | jrose |
Wed, 09 Jun 2010 18:50:45 -0700 | |
changeset 5882 | 6b2aecc4f7d8 |
parent 5547 | f4b087cbb361 |
child 6062 | bab93afe9df7 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5341
diff
changeset
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5341
diff
changeset
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* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5341
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changeset
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* questions. |
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* |
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*/ |
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||
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package sun.jvm.hotspot.tools.jcore; |
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||
27 |
import java.io.*; |
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import java.util.*; |
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import sun.jvm.hotspot.oops.*; |
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import sun.jvm.hotspot.runtime.*; |
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||
32 |
public class ClassWriter implements /* imports */ ClassConstants |
|
33 |
{ |
|
34 |
public static final boolean DEBUG = false; |
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35 |
||
36 |
protected void debugMessage(String message) { |
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System.out.println(message); |
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38 |
} |
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39 |
||
40 |
protected InstanceKlass klass; |
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protected DataOutputStream dos; |
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protected ConstantPool cpool; |
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43 |
||
44 |
// Map between class name to index of type CONSTANT_Class |
|
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protected Map classToIndex = new HashMap(); |
|
46 |
||
47 |
// Map between any modified UTF-8 and it's constant pool index. |
|
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protected Map utf8ToIndex = new HashMap(); |
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||
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// constant pool index for attribute names. |
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51 |
||
52 |
protected short _sourceFileIndex; |
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protected short _innerClassesIndex; |
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protected short _syntheticIndex; |
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protected short _deprecatedIndex; |
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protected short _constantValueIndex; |
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protected short _codeIndex; |
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protected short _exceptionsIndex; |
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protected short _lineNumberTableIndex; |
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protected short _localVariableTableIndex; |
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protected short _signatureIndex; |
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||
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protected static int extractHighShortFromInt(int val) { |
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5882 | 64 |
// must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
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return (val >> 16) & 0xFFFF; |
66 |
} |
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||
68 |
protected static int extractLowShortFromInt(int val) { |
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// must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
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return val & 0xFFFF; |
71 |
} |
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||
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public ClassWriter(InstanceKlass kls, OutputStream os) { |
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klass = kls; |
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dos = new DataOutputStream(os); |
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cpool = klass.getConstants(); |
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} |
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public void write() throws IOException { |
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if (DEBUG) debugMessage("class name = " + klass.getName().asString()); |
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// write magic |
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dos.writeInt(0xCAFEBABE); |
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2529 | 85 |
writeVersion(); |
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writeConstantPool(); |
87 |
writeClassAccessFlags(); |
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writeThisClass(); |
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writeSuperClass(); |
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writeInterfaces(); |
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writeFields(); |
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writeMethods(); |
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writeClassAttributes(); |
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// flush output |
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dos.flush(); |
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} |
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||
2529 | 99 |
protected void writeVersion() throws IOException { |
100 |
dos.writeShort((short)klass.minorVersion()); |
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dos.writeShort((short)klass.majorVersion()); |
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1 | 102 |
} |
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2529 | 104 |
protected void writeIndex(int index) throws IOException { |
105 |
if (index == 0) throw new InternalError(); |
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dos.writeShort(index); |
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} |
108 |
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109 |
protected void writeConstantPool() throws IOException { |
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final TypeArray tags = cpool.getTags(); |
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final long len = tags.getLength(); |
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dos.writeShort((short) len); |
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if (DEBUG) debugMessage("constant pool length = " + len); |
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int ci = 0; // constant pool index |
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// collect all modified UTF-8 Strings from Constant Pool |
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120 |
for (ci = 1; ci < len; ci++) { |
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byte cpConstType = tags.getByteAt(ci); |
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122 |
if(cpConstType == JVM_CONSTANT_Utf8) { |
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Symbol sym = cpool.getSymbolAt(ci); |
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utf8ToIndex.put(sym.asString(), new Short((short) ci)); |
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125 |
} |
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else if(cpConstType == JVM_CONSTANT_Long || |
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127 |
cpConstType == JVM_CONSTANT_Double) { |
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128 |
ci++; |
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129 |
} |
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130 |
} |
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131 |
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132 |
// remember index of attribute name modified UTF-8 strings |
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// class attributes |
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135 |
Short sourceFileIndex = (Short) utf8ToIndex.get("SourceFile"); |
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_sourceFileIndex = (sourceFileIndex != null)? sourceFileIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("SourceFile index = " + _sourceFileIndex); |
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139 |
Short innerClassesIndex = (Short) utf8ToIndex.get("InnerClasses"); |
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_innerClassesIndex = (innerClassesIndex != null)? innerClassesIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("InnerClasses index = " + _innerClassesIndex); |
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||
143 |
// field attributes |
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Short constantValueIndex = (Short) utf8ToIndex.get("ConstantValue"); |
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_constantValueIndex = (constantValueIndex != null)? |
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constantValueIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("ConstantValue index = " + _constantValueIndex); |
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Short syntheticIndex = (Short) utf8ToIndex.get("Synthetic"); |
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_syntheticIndex = (syntheticIndex != null)? syntheticIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Synthetic index = " + _syntheticIndex); |
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153 |
Short deprecatedIndex = (Short) utf8ToIndex.get("Deprecated"); |
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_deprecatedIndex = (deprecatedIndex != null)? deprecatedIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Deprecated index = " + _deprecatedIndex); |
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// method attributes |
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Short codeIndex = (Short) utf8ToIndex.get("Code"); |
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_codeIndex = (codeIndex != null)? codeIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Code index = " + _codeIndex); |
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Short exceptionsIndex = (Short) utf8ToIndex.get("Exceptions"); |
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_exceptionsIndex = (exceptionsIndex != null)? exceptionsIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("Exceptions index = " + _exceptionsIndex); |
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// Short syntheticIndex = (Short) utf8ToIndex.get("Synthetic"); |
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// Short deprecatedIndex = (Short) utf8ToIndex.get("Deprecated"); |
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// Code attributes |
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Short lineNumberTableIndex = (Short) utf8ToIndex.get("LineNumberTable"); |
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_lineNumberTableIndex = (lineNumberTableIndex != null)? |
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lineNumberTableIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("LineNumberTable index = " + _lineNumberTableIndex); |
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Short localVariableTableIndex = (Short) utf8ToIndex.get("LocalVariableTable"); |
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_localVariableTableIndex = (localVariableTableIndex != null)? |
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localVariableTableIndex.shortValue() : 0; |
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if (DEBUG) debugMessage("LocalVariableTable index = " + _localVariableTableIndex); |
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Short signatureIdx = (Short) utf8ToIndex.get("Signature"); |
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_signatureIndex = (signatureIdx != null)? signatureIdx.shortValue() : 0; |
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if (DEBUG) debugMessage("Signature index = " + _signatureIndex); |
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for(ci = 1; ci < len; ci++) { |
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// write cp_info |
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// write constant type |
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byte cpConstType = tags.getByteAt(ci); |
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switch(cpConstType) { |
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case JVM_CONSTANT_Utf8: { |
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dos.writeByte(cpConstType); |
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Symbol sym = cpool.getSymbolAt(ci); |
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dos.writeShort((short)sym.getLength()); |
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dos.write(sym.asByteArray()); |
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if (DEBUG) debugMessage("CP[" + ci + "] = modified UTF-8 " + sym.asString()); |
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break; |
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} |
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case JVM_CONSTANT_Unicode: |
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throw new IllegalArgumentException("Unicode constant!"); |
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200 |
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201 |
case JVM_CONSTANT_Integer: |
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dos.writeByte(cpConstType); |
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dos.writeInt(cpool.getIntAt(ci)); |
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if (DEBUG) debugMessage("CP[" + ci + "] = int " + cpool.getIntAt(ci)); |
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break; |
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206 |
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207 |
case JVM_CONSTANT_Float: |
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dos.writeByte(cpConstType); |
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209 |
dos.writeFloat(cpool.getFloatAt(ci)); |
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if (DEBUG) debugMessage("CP[" + ci + "] = float " + cpool.getFloatAt(ci)); |
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211 |
break; |
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212 |
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213 |
case JVM_CONSTANT_Long: { |
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214 |
dos.writeByte(cpConstType); |
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215 |
long l = cpool.getLongAt(ci); |
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// long entries occupy two pool entries |
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ci++; |
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218 |
dos.writeLong(l); |
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219 |
break; |
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220 |
} |
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221 |
||
222 |
case JVM_CONSTANT_Double: |
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223 |
dos.writeByte(cpConstType); |
|
224 |
dos.writeDouble(cpool.getDoubleAt(ci)); |
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// double entries occupy two pool entries |
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226 |
ci++; |
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227 |
break; |
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228 |
||
229 |
case JVM_CONSTANT_Class: { |
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230 |
dos.writeByte(cpConstType); |
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231 |
// Klass already resolved. ConstantPool constains klassOop. |
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232 |
Klass refKls = (Klass) cpool.getObjAt(ci); |
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String klassName = refKls.getName().asString(); |
|
234 |
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235 |
Short s = (Short) utf8ToIndex.get(klassName); |
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236 |
classToIndex.put(klassName, new Short((short)ci)); |
|
237 |
dos.writeShort(s.shortValue()); |
|
238 |
if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); |
|
239 |
break; |
|
240 |
} |
|
241 |
||
242 |
// case JVM_CONSTANT_ClassIndex: |
|
5341 | 243 |
case JVM_CONSTANT_UnresolvedClassInError: |
1 | 244 |
case JVM_CONSTANT_UnresolvedClass: { |
245 |
dos.writeByte(JVM_CONSTANT_Class); |
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246 |
String klassName = cpool.getSymbolAt(ci).asString(); |
|
247 |
||
248 |
Short s = (Short) utf8ToIndex.get(klassName); |
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249 |
classToIndex.put(klassName, new Short((short) ci)); |
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250 |
||
251 |
dos.writeShort(s.shortValue()); |
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if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); |
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253 |
break; |
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254 |
} |
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255 |
||
256 |
case JVM_CONSTANT_String: { |
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257 |
dos.writeByte(cpConstType); |
|
258 |
String str = OopUtilities.stringOopToString(cpool.getObjAt(ci)); |
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259 |
Short s = (Short) utf8ToIndex.get(str); |
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260 |
dos.writeShort(s.shortValue()); |
|
261 |
if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); |
|
262 |
break; |
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263 |
} |
|
264 |
||
265 |
// case JVM_CONSTANT_StringIndex: |
|
266 |
case JVM_CONSTANT_UnresolvedString: { |
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267 |
dos.writeByte(JVM_CONSTANT_String); |
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268 |
String val = cpool.getSymbolAt(ci).asString(); |
|
269 |
||
270 |
Short s = (Short) utf8ToIndex.get(val); |
|
271 |
dos.writeShort(s.shortValue()); |
|
272 |
if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); |
|
273 |
break; |
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274 |
} |
|
275 |
||
276 |
// all external, internal method/field references |
|
277 |
case JVM_CONSTANT_Fieldref: |
|
278 |
case JVM_CONSTANT_Methodref: |
|
279 |
case JVM_CONSTANT_InterfaceMethodref: { |
|
280 |
dos.writeByte(cpConstType); |
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281 |
int value = cpool.getIntAt(ci); |
|
282 |
short klassIndex = (short) extractLowShortFromInt(value); |
|
283 |
short nameAndTypeIndex = (short) extractHighShortFromInt(value); |
|
284 |
dos.writeShort(klassIndex); |
|
285 |
dos.writeShort(nameAndTypeIndex); |
|
286 |
if (DEBUG) debugMessage("CP[" + ci + "] = ref klass = " + |
|
287 |
klassIndex + ", N&T = " + nameAndTypeIndex); |
|
288 |
break; |
|
289 |
} |
|
290 |
||
291 |
case JVM_CONSTANT_NameAndType: { |
|
292 |
dos.writeByte(cpConstType); |
|
293 |
int value = cpool.getIntAt(ci); |
|
294 |
short nameIndex = (short) extractLowShortFromInt(value); |
|
295 |
short signatureIndex = (short) extractHighShortFromInt(value); |
|
296 |
dos.writeShort(nameIndex); |
|
297 |
dos.writeShort(signatureIndex); |
|
298 |
if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex |
|
299 |
+ ", type = " + signatureIndex); |
|
300 |
break; |
|
301 |
} |
|
5882 | 302 |
|
303 |
case JVM_CONSTANT_MethodHandle: { |
|
304 |
dos.writeByte(cpConstType); |
|
305 |
int value = cpool.getIntAt(ci); |
|
306 |
short refIndex = (short) extractHighShortFromInt(value); |
|
307 |
byte refKind = (byte) extractLowShortFromInt(value); |
|
308 |
dos.writeByte(refKind); |
|
309 |
dos.writeShort(refIndex); |
|
310 |
if (DEBUG) debugMessage("CP[" + ci + "] = MH index = " + refIndex |
|
311 |
+ ", kind = " + refKind); |
|
312 |
break; |
|
313 |
} |
|
314 |
||
315 |
case JVM_CONSTANT_MethodType: { |
|
316 |
dos.writeByte(cpConstType); |
|
317 |
int value = cpool.getIntAt(ci); |
|
318 |
short refIndex = (short) value; |
|
319 |
dos.writeShort(refIndex); |
|
320 |
if (DEBUG) debugMessage("CP[" + ci + "] = MT index = " + refIndex); |
|
321 |
break; |
|
322 |
} |
|
323 |
||
5341 | 324 |
default: |
325 |
throw new InternalError("Unknown tag: " + cpConstType); |
|
1 | 326 |
} // switch |
327 |
} |
|
328 |
} |
|
329 |
||
330 |
protected void writeClassAccessFlags() throws IOException { |
|
331 |
int flags = (int)(klass.getAccessFlags() & JVM_RECOGNIZED_CLASS_MODIFIERS); |
|
332 |
dos.writeShort((short)flags); |
|
333 |
} |
|
334 |
||
335 |
protected void writeThisClass() throws IOException { |
|
336 |
String klassName = klass.getName().asString(); |
|
337 |
Short index = (Short) classToIndex.get(klassName); |
|
338 |
dos.writeShort(index.shortValue()); |
|
339 |
if (DEBUG) debugMessage("this class = " + index); |
|
340 |
} |
|
341 |
||
342 |
protected void writeSuperClass() throws IOException { |
|
343 |
Klass superKlass = klass.getSuper(); |
|
344 |
if (superKlass != null) { // is not java.lang.Object |
|
345 |
String superName = superKlass.getName().asString(); |
|
346 |
Short index = (Short) classToIndex.get(superName); |
|
347 |
if (DEBUG) debugMessage("super class = " + index); |
|
348 |
dos.writeShort(index.shortValue()); |
|
349 |
} else { |
|
350 |
dos.writeShort(0); // no super class |
|
351 |
} |
|
352 |
} |
|
353 |
protected void writeInterfaces() throws IOException { |
|
354 |
ObjArray interfaces = klass.getLocalInterfaces(); |
|
355 |
final int len = (int) interfaces.getLength(); |
|
356 |
||
357 |
if (DEBUG) debugMessage("number of interfaces = " + len); |
|
358 |
||
359 |
// write interfaces count |
|
360 |
dos.writeShort((short) len); |
|
361 |
for (int i = 0; i < len; i++) { |
|
362 |
Klass k = (Klass) interfaces.getObjAt(i); |
|
363 |
Short index = (Short) classToIndex.get(k.getName().asString()); |
|
364 |
dos.writeShort(index.shortValue()); |
|
365 |
if (DEBUG) debugMessage("\t" + index); |
|
366 |
} |
|
367 |
} |
|
368 |
||
369 |
protected void writeFields() throws IOException { |
|
370 |
TypeArray fields = klass.getFields(); |
|
371 |
final int length = (int) fields.getLength(); |
|
372 |
||
373 |
// write number of fields |
|
374 |
dos.writeShort((short) (length / InstanceKlass.NEXT_OFFSET) ); |
|
375 |
||
376 |
if (DEBUG) debugMessage("number of fields = " |
|
377 |
+ length/InstanceKlass.NEXT_OFFSET); |
|
378 |
||
379 |
for (int index = 0; index < length; index += InstanceKlass.NEXT_OFFSET) { |
|
380 |
short accessFlags = fields.getShortAt(index + InstanceKlass.ACCESS_FLAGS_OFFSET); |
|
381 |
dos.writeShort(accessFlags & (short) JVM_RECOGNIZED_FIELD_MODIFIERS); |
|
382 |
||
383 |
short nameIndex = fields.getShortAt(index + InstanceKlass.NAME_INDEX_OFFSET); |
|
384 |
dos.writeShort(nameIndex); |
|
385 |
||
386 |
short signatureIndex = fields.getShortAt(index + InstanceKlass.SIGNATURE_INDEX_OFFSET); |
|
387 |
dos.writeShort(signatureIndex); |
|
388 |
if (DEBUG) debugMessage("\tfield name = " + nameIndex + ", signature = " + signatureIndex); |
|
389 |
||
390 |
short fieldAttributeCount = 0; |
|
2529 | 391 |
boolean hasSyn = hasSyntheticAttribute(accessFlags); |
392 |
if (hasSyn) |
|
1 | 393 |
fieldAttributeCount++; |
394 |
||
395 |
short initvalIndex = fields.getShortAt(index + InstanceKlass.INITVAL_INDEX_OFFSET); |
|
396 |
if (initvalIndex != 0) |
|
397 |
fieldAttributeCount++; |
|
398 |
||
399 |
short genSigIndex = fields.getShortAt(index + InstanceKlass.GENERIC_SIGNATURE_INDEX_OFFSET); |
|
400 |
if (genSigIndex != 0) |
|
401 |
fieldAttributeCount++; |
|
402 |
||
403 |
dos.writeShort(fieldAttributeCount); |
|
404 |
||
405 |
// write synthetic, if applicable |
|
2529 | 406 |
if (hasSyn) |
1 | 407 |
writeSynthetic(); |
408 |
||
409 |
if (initvalIndex != 0) { |
|
2529 | 410 |
writeIndex(_constantValueIndex); |
1 | 411 |
dos.writeInt(2); |
412 |
dos.writeShort(initvalIndex); |
|
413 |
if (DEBUG) debugMessage("\tfield init value = " + initvalIndex); |
|
414 |
} |
|
415 |
||
416 |
if (genSigIndex != 0) { |
|
2529 | 417 |
writeIndex(_signatureIndex); |
1 | 418 |
dos.writeInt(2); |
419 |
dos.writeShort(genSigIndex); |
|
420 |
if (DEBUG) debugMessage("\tfield generic signature index " + genSigIndex); |
|
421 |
} |
|
422 |
} |
|
423 |
} |
|
424 |
||
425 |
protected boolean isSynthetic(short accessFlags) { |
|
426 |
return (accessFlags & (short) JVM_ACC_SYNTHETIC) != 0; |
|
427 |
} |
|
428 |
||
2529 | 429 |
protected boolean hasSyntheticAttribute(short accessFlags) { |
430 |
// Check if flags have the attribute and if the constant pool contains an entry for it. |
|
431 |
return isSynthetic(accessFlags) && _syntheticIndex != 0; |
|
432 |
} |
|
433 |
||
1 | 434 |
protected void writeSynthetic() throws IOException { |
2529 | 435 |
writeIndex(_syntheticIndex); |
1 | 436 |
dos.writeInt(0); |
437 |
} |
|
438 |
||
439 |
protected void writeMethods() throws IOException { |
|
440 |
ObjArray methods = klass.getMethods(); |
|
441 |
final int len = (int) methods.getLength(); |
|
442 |
// write number of methods |
|
443 |
dos.writeShort((short) len); |
|
444 |
if (DEBUG) debugMessage("number of methods = " + len); |
|
445 |
for (int m = 0; m < len; m++) { |
|
446 |
writeMethod((Method) methods.getObjAt(m)); |
|
447 |
} |
|
448 |
} |
|
449 |
||
450 |
protected void writeMethod(Method m) throws IOException { |
|
451 |
long accessFlags = m.getAccessFlags(); |
|
452 |
dos.writeShort((short) (accessFlags & JVM_RECOGNIZED_METHOD_MODIFIERS)); |
|
453 |
dos.writeShort((short) m.getNameIndex()); |
|
454 |
dos.writeShort((short) m.getSignatureIndex()); |
|
455 |
if (DEBUG) debugMessage("\tmethod name = " + m.getNameIndex() + ", signature = " |
|
456 |
+ m.getSignatureIndex()); |
|
457 |
||
458 |
final boolean isNative = ((accessFlags & JVM_ACC_NATIVE) != 0); |
|
459 |
final boolean isAbstract = ((accessFlags & JVM_ACC_ABSTRACT) != 0); |
|
460 |
||
461 |
short methodAttributeCount = 0; |
|
462 |
||
2529 | 463 |
final boolean hasSyn = hasSyntheticAttribute((short)accessFlags); |
464 |
if (hasSyn) |
|
1 | 465 |
methodAttributeCount++; |
466 |
||
467 |
final boolean hasCheckedExceptions = m.hasCheckedExceptions(); |
|
468 |
if (hasCheckedExceptions) |
|
469 |
methodAttributeCount++; |
|
470 |
||
471 |
final boolean isCodeAvailable = (!isNative) && (!isAbstract); |
|
472 |
if (isCodeAvailable) |
|
473 |
methodAttributeCount++; |
|
474 |
||
475 |
final boolean isGeneric = (m.getGenericSignature() != null); |
|
476 |
if (isGeneric) |
|
477 |
methodAttributeCount++; |
|
478 |
||
479 |
dos.writeShort(methodAttributeCount); |
|
480 |
if (DEBUG) debugMessage("\tmethod attribute count = " + methodAttributeCount); |
|
481 |
||
2529 | 482 |
if (hasSyn) { |
1 | 483 |
if (DEBUG) debugMessage("\tmethod is synthetic"); |
484 |
writeSynthetic(); |
|
485 |
} |
|
486 |
||
487 |
if (isCodeAvailable) { |
|
488 |
byte[] code = m.getByteCode(); |
|
489 |
short codeAttrCount = 0; |
|
490 |
int codeSize = 2 /* max_stack */ + |
|
491 |
2 /* max_locals */ + |
|
492 |
4 /* code_length */ + |
|
493 |
code.length /* code */ + |
|
494 |
2 /* exp. table len. */ + |
|
495 |
2 /* code attr. count */; |
|
496 |
||
497 |
TypeArray exceptionTable = m.getExceptionTable(); |
|
498 |
final int exceptionTableLen = (int) exceptionTable.getLength(); |
|
499 |
if (exceptionTableLen != 0) { |
|
500 |
if (DEBUG) debugMessage("\tmethod has exception table"); |
|
501 |
codeSize += (exceptionTableLen / 4) /* exception table is 4-tuple array */ |
|
502 |
* (2 /* start_pc */ + |
|
503 |
2 /* end_pc */ + |
|
504 |
2 /* handler_pc */ + |
|
505 |
2 /* catch_type */); |
|
506 |
} |
|
507 |
||
508 |
boolean hasLineNumberTable = m.hasLineNumberTable(); |
|
509 |
LineNumberTableElement[] lineNumberTable = null; |
|
510 |
int lineNumberAttrLen = 0; |
|
511 |
||
512 |
if (hasLineNumberTable) { |
|
513 |
if (DEBUG) debugMessage("\tmethod has line number table"); |
|
514 |
lineNumberTable = m.getLineNumberTable(); |
|
515 |
if (DEBUG) debugMessage("\t\tline table length = " + lineNumberTable.length); |
|
516 |
||
517 |
lineNumberAttrLen = 2 /* line number table length */ + |
|
518 |
lineNumberTable.length * (2 /* start_pc */ + 2 /* line_number */); |
|
519 |
||
520 |
codeSize += 2 /* line number table attr index */ + |
|
521 |
4 /* line number table attr length */ + |
|
522 |
lineNumberAttrLen; |
|
523 |
||
524 |
if (DEBUG) debugMessage("\t\tline number table attr size = " + |
|
525 |
lineNumberAttrLen); |
|
526 |
||
527 |
codeAttrCount++; |
|
528 |
} |
|
529 |
||
530 |
boolean hasLocalVariableTable = m.hasLocalVariableTable(); |
|
531 |
LocalVariableTableElement[] localVariableTable = null; |
|
532 |
int localVarAttrLen = 0; |
|
533 |
||
534 |
if (hasLocalVariableTable) { |
|
535 |
if (DEBUG) debugMessage("\tmethod has local variable table"); |
|
536 |
localVariableTable = m.getLocalVariableTable(); |
|
537 |
if (DEBUG) debugMessage("\t\tlocal variable table length = " |
|
538 |
+ localVariableTable.length); |
|
539 |
localVarAttrLen = |
|
540 |
2 /* local variable table length */ + |
|
541 |
localVariableTable.length * ( 2 /* start_pc */ + |
|
542 |
2 /* length */ + |
|
543 |
2 /* name_index */ + |
|
544 |
2 /* signature_index */ + |
|
545 |
2 /* variable index */ ); |
|
546 |
||
547 |
if (DEBUG) debugMessage("\t\tlocal variable attr size = " + |
|
548 |
localVarAttrLen); |
|
549 |
||
550 |
codeSize += 2 /* local variable table attr index */ + |
|
551 |
4 /* local variable table attr length */ + |
|
552 |
localVarAttrLen; |
|
553 |
||
554 |
codeAttrCount++; |
|
555 |
} |
|
556 |
||
557 |
// fix ConstantPoolCache indices to ConstantPool indices. |
|
558 |
rewriteByteCode(m, code); |
|
559 |
||
560 |
// start writing Code |
|
561 |
||
2529 | 562 |
writeIndex(_codeIndex); |
1 | 563 |
|
564 |
dos.writeInt(codeSize); |
|
565 |
if (DEBUG) debugMessage("\tcode attribute length = " + codeSize); |
|
566 |
||
567 |
dos.writeShort((short) m.getMaxStack()); |
|
568 |
if (DEBUG) debugMessage("\tmax stack = " + m.getMaxStack()); |
|
569 |
||
570 |
dos.writeShort((short) m.getMaxLocals()); |
|
571 |
if (DEBUG) debugMessage("\tmax locals = " + m.getMaxLocals()); |
|
572 |
||
573 |
dos.writeInt(code.length); |
|
574 |
if (DEBUG) debugMessage("\tcode size = " + code.length); |
|
575 |
||
576 |
dos.write(code); |
|
577 |
||
578 |
// write exception table size |
|
579 |
dos.writeShort((short) (exceptionTableLen / 4)); |
|
580 |
if (DEBUG) debugMessage("\texception table length = " + (exceptionTableLen / 4)); |
|
581 |
||
582 |
if (exceptionTableLen != 0) { |
|
583 |
for (int e = 0; e < exceptionTableLen; e += 4) { |
|
584 |
dos.writeShort((short) exceptionTable.getIntAt(e)); |
|
585 |
dos.writeShort((short) exceptionTable.getIntAt(e + 1)); |
|
586 |
dos.writeShort((short) exceptionTable.getIntAt(e + 2)); |
|
587 |
dos.writeShort((short) exceptionTable.getIntAt(e + 3)); |
|
588 |
} |
|
589 |
} |
|
590 |
||
591 |
dos.writeShort((short)codeAttrCount); |
|
592 |
if (DEBUG) debugMessage("\tcode attribute count = " + codeAttrCount); |
|
593 |
||
594 |
// write LineNumberTable, if available. |
|
595 |
if (hasLineNumberTable) { |
|
2529 | 596 |
writeIndex(_lineNumberTableIndex); |
1 | 597 |
dos.writeInt(lineNumberAttrLen); |
598 |
dos.writeShort((short) lineNumberTable.length); |
|
599 |
for (int l = 0; l < lineNumberTable.length; l++) { |
|
600 |
dos.writeShort((short) lineNumberTable[l].getStartBCI()); |
|
601 |
dos.writeShort((short) lineNumberTable[l].getLineNumber()); |
|
602 |
} |
|
603 |
} |
|
604 |
||
605 |
// write LocalVariableTable, if available. |
|
606 |
if (hasLocalVariableTable) { |
|
2529 | 607 |
writeIndex((short) _localVariableTableIndex); |
1 | 608 |
dos.writeInt(localVarAttrLen); |
609 |
dos.writeShort((short) localVariableTable.length); |
|
610 |
for (int l = 0; l < localVariableTable.length; l++) { |
|
611 |
dos.writeShort((short) localVariableTable[l].getStartBCI()); |
|
612 |
dos.writeShort((short) localVariableTable[l].getLength()); |
|
613 |
dos.writeShort((short) localVariableTable[l].getNameCPIndex()); |
|
614 |
dos.writeShort((short) localVariableTable[l].getDescriptorCPIndex()); |
|
615 |
dos.writeShort((short) localVariableTable[l].getSlot()); |
|
616 |
} |
|
617 |
} |
|
618 |
} |
|
619 |
||
2529 | 620 |
if (hasCheckedExceptions) { |
621 |
CheckedExceptionElement[] exceptions = m.getCheckedExceptions(); |
|
622 |
writeIndex(_exceptionsIndex); |
|
623 |
||
624 |
int attrSize = 2 /* number_of_exceptions */ + |
|
625 |
exceptions.length * 2 /* exception_index */; |
|
626 |
dos.writeInt(attrSize); |
|
627 |
dos.writeShort(exceptions.length); |
|
628 |
if (DEBUG) debugMessage("\tmethod has " + exceptions.length |
|
629 |
+ " checked exception(s)"); |
|
630 |
for (int e = 0; e < exceptions.length; e++) { |
|
631 |
short cpIndex = (short) exceptions[e].getClassCPIndex(); |
|
632 |
dos.writeShort(cpIndex); |
|
633 |
} |
|
634 |
} |
|
635 |
||
1 | 636 |
if (isGeneric) { |
637 |
writeGenericSignature(m.getGenericSignature().asString()); |
|
638 |
} |
|
639 |
} |
|
640 |
||
641 |
protected void rewriteByteCode(Method m, byte[] code) { |
|
642 |
ByteCodeRewriter r = new ByteCodeRewriter(m, cpool, code); |
|
643 |
r.rewrite(); |
|
644 |
} |
|
645 |
||
646 |
protected void writeGenericSignature(String signature) throws IOException { |
|
2529 | 647 |
writeIndex(_signatureIndex); |
1 | 648 |
if (DEBUG) debugMessage("signature attribute = " + _signatureIndex); |
649 |
dos.writeInt(2); |
|
650 |
Short index = (Short) utf8ToIndex.get(signature); |
|
651 |
dos.writeShort(index.shortValue()); |
|
652 |
if (DEBUG) debugMessage("generic signature = " + index); |
|
653 |
} |
|
654 |
||
655 |
protected void writeClassAttributes() throws IOException { |
|
656 |
final long flags = klass.getAccessFlags(); |
|
2529 | 657 |
final boolean hasSyn = hasSyntheticAttribute((short) flags); |
1 | 658 |
|
659 |
// check for source file |
|
660 |
short classAttributeCount = 0; |
|
661 |
||
2529 | 662 |
if (hasSyn) |
1 | 663 |
classAttributeCount++; |
664 |
||
665 |
Symbol sourceFileName = klass.getSourceFileName(); |
|
666 |
if (sourceFileName != null) |
|
667 |
classAttributeCount++; |
|
668 |
||
669 |
Symbol genericSignature = klass.getGenericSignature(); |
|
670 |
if (genericSignature != null) |
|
671 |
classAttributeCount++; |
|
672 |
||
673 |
TypeArray innerClasses = klass.getInnerClasses(); |
|
674 |
final int numInnerClasses = (int) (innerClasses.getLength() / 4); |
|
675 |
if (numInnerClasses != 0) |
|
676 |
classAttributeCount++; |
|
677 |
||
678 |
dos.writeShort(classAttributeCount); |
|
679 |
if (DEBUG) debugMessage("class attribute count = " + classAttributeCount); |
|
680 |
||
2529 | 681 |
if (hasSyn) |
1 | 682 |
writeSynthetic(); |
683 |
||
684 |
// write SourceFile, if any |
|
685 |
if (sourceFileName != null) { |
|
2529 | 686 |
writeIndex(_sourceFileIndex); |
1 | 687 |
if (DEBUG) debugMessage("source file attribute = " + _sourceFileIndex); |
688 |
dos.writeInt(2); |
|
689 |
Short index = (Short) utf8ToIndex.get(sourceFileName.asString()); |
|
690 |
dos.writeShort(index.shortValue()); |
|
691 |
if (DEBUG) debugMessage("source file name = " + index); |
|
692 |
} |
|
693 |
||
694 |
// write Signature, if any |
|
695 |
if (genericSignature != null) { |
|
696 |
writeGenericSignature(genericSignature.asString()); |
|
697 |
} |
|
698 |
||
699 |
// write inner classes, if any |
|
700 |
if (numInnerClasses != 0) { |
|
2529 | 701 |
writeIndex(_innerClassesIndex); |
1 | 702 |
final int innerAttrLen = 2 /* number_of_inner_classes */ + |
703 |
numInnerClasses * ( |
|
704 |
2 /* inner_class_info_index */ + |
|
705 |
2 /* outer_class_info_index */ + |
|
706 |
2 /* inner_class_name_index */ + |
|
707 |
2 /* inner_class_access_flags */); |
|
708 |
dos.writeInt(innerAttrLen); |
|
709 |
||
710 |
dos.writeShort(numInnerClasses); |
|
711 |
if (DEBUG) debugMessage("class has " + numInnerClasses + " inner class entries"); |
|
712 |
||
713 |
for (int index = 0; index < numInnerClasses * 4; index++) { |
|
714 |
dos.writeShort(innerClasses.getShortAt(index)); |
|
715 |
} |
|
716 |
} |
|
717 |
} |
|
718 |
} |