author | jjg |
Fri, 16 Oct 2009 12:56:50 -0700 | |
changeset 4076 | 319c19c1f28d |
parent 2980 | f391c41bae7e |
child 5520 | 86e4b9a9da40 |
permissions | -rw-r--r-- |
2980 | 1 |
/* |
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* Copyright 2009 Sun Microsystems, Inc. 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. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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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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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package com.sun.tools.javap; |
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import com.sun.tools.classfile.Attribute; |
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import com.sun.tools.classfile.Code_attribute; |
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import com.sun.tools.classfile.ConstantPool; |
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import com.sun.tools.classfile.ConstantPoolException; |
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import com.sun.tools.classfile.Descriptor; |
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import com.sun.tools.classfile.Descriptor.InvalidDescriptor; |
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import com.sun.tools.classfile.Instruction; |
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import com.sun.tools.classfile.LocalVariableTypeTable_attribute; |
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import com.sun.tools.classfile.Signature; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.ListIterator; |
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import java.util.Map; |
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/** |
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* Annotate instructions with details about local variables. |
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* |
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* <p><b>This is NOT part of any API supported by Sun Microsystems. If |
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* you write code that depends on this, you do so at your own risk. |
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* This code and its internal interfaces are subject to change or |
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* deletion without notice.</b> |
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*/ |
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public class LocalVariableTypeTableWriter extends InstructionDetailWriter { |
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public enum NoteKind { |
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START("start") { |
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public boolean match(LocalVariableTypeTable_attribute.Entry entry, int pc) { |
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return (pc == entry.start_pc); |
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} |
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}, |
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END("end") { |
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public boolean match(LocalVariableTypeTable_attribute.Entry entry, int pc) { |
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return (pc == entry.start_pc + entry.length); |
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} |
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}; |
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NoteKind(String text) { |
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this.text = text; |
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} |
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public abstract boolean match(LocalVariableTypeTable_attribute.Entry entry, int pc); |
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public final String text; |
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}; |
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static LocalVariableTypeTableWriter instance(Context context) { |
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LocalVariableTypeTableWriter instance = context.get(LocalVariableTypeTableWriter.class); |
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if (instance == null) |
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instance = new LocalVariableTypeTableWriter(context); |
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return instance; |
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} |
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protected LocalVariableTypeTableWriter(Context context) { |
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super(context); |
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context.put(LocalVariableTypeTableWriter.class, this); |
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classWriter = ClassWriter.instance(context); |
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} |
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public void reset(Code_attribute attr) { |
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codeAttr = attr; |
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pcMap = new HashMap<Integer, List<LocalVariableTypeTable_attribute.Entry>>(); |
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LocalVariableTypeTable_attribute lvt = |
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(LocalVariableTypeTable_attribute) (attr.attributes.get(Attribute.LocalVariableTypeTable)); |
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if (lvt == null) |
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return; |
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for (int i = 0; i < lvt.local_variable_table.length; i++) { |
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LocalVariableTypeTable_attribute.Entry entry = lvt.local_variable_table[i]; |
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put(entry.start_pc, entry); |
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put(entry.start_pc + entry.length, entry); |
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} |
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} |
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public void writeDetails(Instruction instr) { |
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int pc = instr.getPC(); |
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writeLocalVariables(pc, NoteKind.END); |
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writeLocalVariables(pc, NoteKind.START); |
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} |
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@Override |
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public void flush() { |
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int pc = codeAttr.code_length; |
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writeLocalVariables(pc, NoteKind.END); |
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} |
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public void writeLocalVariables(int pc, NoteKind kind) { |
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ConstantPool constant_pool = classWriter.getClassFile().constant_pool; |
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String indent = space(2); // get from Options? |
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List<LocalVariableTypeTable_attribute.Entry> entries = pcMap.get(pc); |
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if (entries != null) { |
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for (ListIterator<LocalVariableTypeTable_attribute.Entry> iter = |
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entries.listIterator(kind == NoteKind.END ? entries.size() : 0); |
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kind == NoteKind.END ? iter.hasPrevious() : iter.hasNext() ; ) { |
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LocalVariableTypeTable_attribute.Entry entry = |
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kind == NoteKind.END ? iter.previous() : iter.next(); |
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if (kind.match(entry, pc)) { |
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print(indent); |
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print(kind.text); |
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print(" generic local "); |
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print(entry.index); |
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print(" // "); |
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Descriptor d = new Signature(entry.signature_index); |
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try { |
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4076
319c19c1f28d
6888367: classfile library parses signature attributes incorrectly
jjg
parents:
2980
diff
changeset
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print(d.getFieldType(constant_pool).toString().replace("/", ".")); |
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} catch (InvalidDescriptor e) { |
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print(report(e)); |
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} catch (ConstantPoolException e) { |
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print(report(e)); |
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} |
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print(" "); |
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try { |
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print(constant_pool.getUTF8Value(entry.name_index)); |
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} catch (ConstantPoolException e) { |
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print(report(e)); |
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} |
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println(); |
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} |
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} |
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} |
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} |
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private void put(int pc, LocalVariableTypeTable_attribute.Entry entry) { |
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List<LocalVariableTypeTable_attribute.Entry> list = pcMap.get(pc); |
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if (list == null) { |
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list = new ArrayList<LocalVariableTypeTable_attribute.Entry>(); |
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pcMap.put(pc, list); |
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} |
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if (!list.contains(entry)) |
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list.add(entry); |
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} |
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private ClassWriter classWriter; |
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private Code_attribute codeAttr; |
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private Map<Integer, List<LocalVariableTypeTable_attribute.Entry>> pcMap; |
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} |