/**
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000,2002,2003 INRIA, France Telecom
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.objectweb.asm.util.attrs;
import java.util.List;
import java.util.Map;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.Label;
import org.objectweb.asm.attrs.StackMapAttribute;
import org.objectweb.asm.attrs.StackMapFrame;
import org.objectweb.asm.attrs.StackMapType;
/**
* An {@link ASMifiable} {@link StackMapAttribute} sub class.
*
* @author Eugene Kuleshov
*/
public class ASMStackMapAttribute extends StackMapAttribute
implements ASMifiable
{
protected Attribute read (ClassReader cr, int off,
int len, char[] buf, int codeOff, Label[] labels)
{
StackMapAttribute attr =
(StackMapAttribute)super.read(cr, off, len, buf, codeOff, labels);
ASMStackMapAttribute result = new ASMStackMapAttribute();
result.frames = attr.frames;
return result;
}
public void asmify (StringBuffer buf, String varName, Map labelNames) {
buf.append("{\n");
buf.append("StackMapAttribute ").append(varName).append("Attr");
buf.append(" = new StackMapAttribute();\n");
if (frames.size() > 0) {
for (int i = 0; i < frames.size(); i++) {
asmify((StackMapFrame)frames.get(i), buf, varName + "frame" + i, labelNames);
}
}
buf.append(varName).append(".visitAttribute(").append(varName);
buf.append("Attr);\n}\n");
}
void asmify (StackMapFrame f, StringBuffer buf, String varName, Map labelNames) {
declareLabel(buf, labelNames, f.label);
buf.append("{\n");
buf.append("StackMapFrame ").append(varName).append( " = new StackMapFrame();\n");
buf.append(varName).append(".label = ")
.append(labelNames.get(f.label)).append(";\n");
asmifyTypeInfo(buf, varName, labelNames, f.locals, "locals");
asmifyTypeInfo(buf, varName, labelNames, f.stack, "stack");
buf.append( "cvAttr.frames.add(").append(varName).append(");\n");
buf.append("}\n");
}
void asmifyTypeInfo (StringBuffer buf, String varName,
Map labelNames, List infos, String field) {
if (infos.size() > 0) {
buf.append("{\n");
for (int i = 0; i < infos.size(); i++) {
StackMapType typeInfo = (StackMapType)infos.get(i);
String localName = varName + "Info" + i;
int type = typeInfo.getType();
buf.append("StackMapType ").append(localName)
.append(" = StackMapType.getTypeInfo( StackMapType.ITEM_")
.append(StackMapType.ITEM_NAMES[type]).append(");\n");
switch (type) {
case StackMapType.ITEM_Object: //
buf.append(localName).append(".setObject(\"")
.append(typeInfo.getObject()).append("\");\n");
break;
case StackMapType.ITEM_Uninitialized: //
declareLabel(buf, labelNames, typeInfo.getLabel());
buf.append(localName).append(".setLabel(")
.append(labelNames.get(typeInfo.getLabel())).append(");\n");
break;
}
buf.append(varName).append(".").append(field)
.append(".add(").append(localName).append(");\n");
}
buf.append("}\n");
}
}
static void declareLabel (StringBuffer buf, Map labelNames, Label l) {
String name = (String)labelNames.get(l);
if (name == null) {
name = "l" + labelNames.size();
labelNames.put(l, name);
buf.append("Label ").append(name).append(" = new Label();\n");
}
}
}