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/*
* Fernflower - The Analytical Java Decompiler
* http://www.reversed-java.com
*
* (C) 2008 - 2010, Stiver
*
* This software is NEITHER public domain NOR free software
* as per GNU License. See license.txt for more details.
*
* This software is distributed WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE.
*/
package org.jetbrains.java.decompiler.main.rels;
import java.io.IOException;
import java.util.HashSet;
import org.jetbrains.java.decompiler.code.CodeConstants;
import org.jetbrains.java.decompiler.main.DecompilerContext;
import org.jetbrains.java.decompiler.main.collectors.CounterContainer;
import org.jetbrains.java.decompiler.main.collectors.VarNamesCollector;
import org.jetbrains.java.decompiler.main.extern.IFernflowerLogger;
import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences;
import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent;
import org.jetbrains.java.decompiler.modules.decompiler.stats.RootStatement;
import org.jetbrains.java.decompiler.modules.decompiler.vars.VarProcessor;
import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPaar;
import org.jetbrains.java.decompiler.struct.StructClass;
import org.jetbrains.java.decompiler.struct.StructField;
import org.jetbrains.java.decompiler.struct.StructMethod;
import org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute;
import org.jetbrains.java.decompiler.struct.attr.StructLocalVariableTableAttribute;
import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor;
import org.jetbrains.java.decompiler.util.InterpreterUtil;
import org.jetbrains.java.decompiler.util.VBStyleCollection;
public class ClassWrapper {
private StructClass classStruct;
private HashSet<String> hideMembers = new HashSet<String>();
private VBStyleCollection<Exprent, String> staticFieldInitializers = new VBStyleCollection<Exprent, String>();
private VBStyleCollection<Exprent, String> dynamicFieldInitializers = new VBStyleCollection<Exprent, String>();
private VBStyleCollection<MethodWrapper, String> methods = new VBStyleCollection<MethodWrapper, String>();
public ClassWrapper(StructClass classStruct) {
this.classStruct = classStruct;
}
@SuppressWarnings("deprecation")
public void init() throws IOException {
DecompilerContext.setProperty(DecompilerContext.CURRENT_CLASS, classStruct);
DecompilerContext.getLogger().startClass(classStruct.qualifiedName);
// collect field names
HashSet<String> setFieldNames = new HashSet<String>();
for(StructField fd: classStruct.getFields()) {
setFieldNames.add(fd.getName());
}
for(StructMethod mt: classStruct.getMethods()) {
DecompilerContext.getLogger().startMethod(mt.getName()+" "+mt.getDescriptor());
VarNamesCollector vc = new VarNamesCollector();
DecompilerContext.setVarncollector(vc);
CounterContainer counter = new CounterContainer();
DecompilerContext.setCountercontainer(counter);
DecompilerContext.setProperty(DecompilerContext.CURRENT_METHOD, mt);
DecompilerContext.setProperty(DecompilerContext.CURRENT_METHOD_DESCRIPTOR, MethodDescriptor.parseDescriptor(mt.getDescriptor()));
VarProcessor varproc = new VarProcessor();
DecompilerContext.setProperty(DecompilerContext.CURRENT_VAR_PROCESSOR, varproc);
Thread mtthread = null;
RootStatement root = null;
boolean isError = false;
try {
if(mt.containsCode()) {
int maxsec = 10 * Integer.parseInt(DecompilerContext.getProperty(IFernflowerPreferences.MAX_PROCESSING_METHOD).toString());
if(maxsec == 0) { // blocking wait
root = MethodProcessorThread.codeToJava(mt, varproc);
} else {
MethodProcessorThread mtproc = new MethodProcessorThread(mt, varproc, DecompilerContext.getCurrentContext());
mtthread = new Thread(mtproc);
mtthread.start();
int sec = 0;
while(mtthread.isAlive()) {
synchronized(mtproc) {
mtproc.wait(100);
}
if(maxsec > 0 && ++sec > maxsec) {
DecompilerContext.getLogger().writeMessage("Processing time limit ("+maxsec+" sec.) for method " +
mt.getName()+" "+mt.getDescriptor()+ " exceeded, execution interrupted.", IFernflowerLogger.ERROR);
mtthread.stop();
isError = true;
break;
}
}
if(!isError) {
if(mtproc.getError() != null) {
throw mtproc.getError();
} else {
root = mtproc.getRoot();
}
}
}
} else {
boolean thisvar = (mt.getAccessFlags() & CodeConstants.ACC_STATIC) == 0;
MethodDescriptor md = MethodDescriptor.parseDescriptor(mt.getDescriptor());
int paramcount = 0;
if(thisvar) {
varproc.getThisvars().put(new VarVersionPaar(0,0), classStruct.qualifiedName);
paramcount = 1;
}
paramcount += md.params.length;
int varindex = 0;
for(int i=0;i<paramcount;i++) {
varproc.setVarName(new VarVersionPaar(varindex, 0), vc.getFreeName(varindex));
if(thisvar) {
if(i==0) {
varindex++;
} else {
varindex+=md.params[i-1].stack_size;
}
} else {
varindex+=md.params[i].stack_size;
}
}
}
} catch(ThreadDeath ex) {
try {
if(mtthread != null) {
mtthread.stop();
}
} catch(Throwable ignored) { }
throw ex;
} catch(Throwable ex) {
DecompilerContext.getLogger().writeMessage("Method "+mt.getName()+" "+mt.getDescriptor()+" couldn't be decompiled.", ex);
isError = true;
}
MethodWrapper meth = new MethodWrapper(root, varproc, mt, counter);
meth.decompiledWithErrors = isError;
methods.addWithKey(meth, InterpreterUtil.makeUniqueKey(mt.getName(), mt.getDescriptor()));
// rename vars so that no one has the same name as a field
varproc.refreshVarNames(new VarNamesCollector(setFieldNames));
// if debug information present and should be used
if(DecompilerContext.getOption(IFernflowerPreferences.USE_DEBUG_VARNAMES)) {
StructLocalVariableTableAttribute attr = (StructLocalVariableTableAttribute)mt.getAttributes().getWithKey(
StructGeneralAttribute.ATTRIBUTE_LOCAL_VARIABLE_TABLE);
if(attr != null) {
varproc.setDebugVarNames(attr.getMapVarNames());
}
}
DecompilerContext.getLogger().endMethod();
}
DecompilerContext.getLogger().endClass();
}
public MethodWrapper getMethodWrapper(String name, String descriptor) {
return methods.getWithKey(InterpreterUtil.makeUniqueKey(name, descriptor));
}
public StructClass getClassStruct() {
return classStruct;
}
public VBStyleCollection<MethodWrapper, String> getMethods() {
return methods;
}
public HashSet<String> getHideMembers() {
return hideMembers;
}
public VBStyleCollection<Exprent, String> getStaticFieldInitializers() {
return staticFieldInitializers;
}
public VBStyleCollection<Exprent, String> getDynamicFieldInitializers() {
return dynamicFieldInitializers;
}
}
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