diff options
Diffstat (limited to 'src/org/jetbrains/java/decompiler/main/rels')
6 files changed, 2167 insertions, 0 deletions
diff --git a/src/org/jetbrains/java/decompiler/main/rels/ClassWrapper.java b/src/org/jetbrains/java/decompiler/main/rels/ClassWrapper.java new file mode 100644 index 0000000..dcbeaea --- /dev/null +++ b/src/org/jetbrains/java/decompiler/main/rels/ClassWrapper.java @@ -0,0 +1,216 @@ +/* + * 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; + } + +} diff --git a/src/org/jetbrains/java/decompiler/main/rels/LambdaProcessor.java b/src/org/jetbrains/java/decompiler/main/rels/LambdaProcessor.java new file mode 100644 index 0000000..bf5f72f --- /dev/null +++ b/src/org/jetbrains/java/decompiler/main/rels/LambdaProcessor.java @@ -0,0 +1,138 @@ +package org.jetbrains.java.decompiler.main.rels; + +import java.io.IOException; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; + +import org.jetbrains.java.decompiler.code.CodeConstants; +import org.jetbrains.java.decompiler.code.Instruction; +import org.jetbrains.java.decompiler.code.InstructionSequence; +import org.jetbrains.java.decompiler.main.ClassesProcessor; +import org.jetbrains.java.decompiler.main.ClassesProcessor.ClassNode; +import org.jetbrains.java.decompiler.main.DecompilerContext; +import org.jetbrains.java.decompiler.struct.StructClass; +import org.jetbrains.java.decompiler.struct.StructMethod; +import org.jetbrains.java.decompiler.struct.attr.StructBootstrapMethodsAttribute; +import org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute; +import org.jetbrains.java.decompiler.struct.consts.LinkConstant; +import org.jetbrains.java.decompiler.struct.consts.PooledConstant; +import org.jetbrains.java.decompiler.struct.consts.PrimitiveConstant; +import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor; +import org.jetbrains.java.decompiler.util.InterpreterUtil; + +public class LambdaProcessor { + + private static final String JAVAC_LAMBDA_CLASS = "java/lang/invoke/LambdaMetafactory"; + private static final String JAVAC_LAMBDA_METHOD = "metafactory"; + private static final String JAVAC_LAMBDA_METHOD_DESCRIPTOR = "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"; + + public void processClass(ClassNode node) throws IOException { + + for(ClassNode child : node.nested) { + processClass(child); + } + + if(node.nested.isEmpty()) { + hasLambda(node); + } + } + + public boolean hasLambda(ClassNode node) throws IOException { + + ClassesProcessor clprocessor = DecompilerContext.getClassprocessor(); + StructClass cl = node.classStruct; + + if(cl.getBytecodeVersion() < CodeConstants.BYTECODE_JAVA_8) { // lamda beginning with Java 8 + return false; + } + + StructBootstrapMethodsAttribute bootstrap = (StructBootstrapMethodsAttribute)cl.getAttributes().getWithKey(StructGeneralAttribute.ATTRIBUTE_BOOTSTRAP_METHODS); + if(bootstrap == null || bootstrap.getMethodsNumber() == 0) { + return false; // no bootstrap constants in pool + } + + Set<Integer> lambda_methods = new HashSet<Integer>(); + + // find lambda bootstrap constants + for(int i = 0; i < bootstrap.getMethodsNumber(); ++i) { + LinkConstant method_ref = bootstrap.getMethodReference(i); // method handle + + if(JAVAC_LAMBDA_CLASS.equals(method_ref.classname) && + JAVAC_LAMBDA_METHOD.equals(method_ref.elementname) && + JAVAC_LAMBDA_METHOD_DESCRIPTOR.equals(method_ref.descriptor)) { // check for javac lambda structure. FIXME: extend for Eclipse etc. at some point + lambda_methods.add(i); + } + } + + if(lambda_methods.isEmpty()) { + return false; // no lambda bootstrap constant found + } + + Map<String, String> mapMethodsLambda = new HashMap<String, String>(); + + // iterate over code and find invocations of bootstrap methods. Replace them with anonymous classes. + for(StructMethod mt: cl.getMethods()) { + mt.expandData(); + + InstructionSequence seq = mt.getInstructionSequence(); + if(seq != null && seq.length() > 0) { + int len = seq.length(); + + for(int i = 0; i < len; ++i) { + Instruction instr = seq.getInstr(i); + + if(instr.opcode == CodeConstants.opc_invokedynamic) { + LinkConstant invoke_dynamic = cl.getPool().getLinkConstant(instr.getOperand(0)); + + if(lambda_methods.contains(invoke_dynamic.index1)) { // lambda invocation found + + List<PooledConstant> bootstrap_arguments = bootstrap.getMethodArguments(invoke_dynamic.index1); + MethodDescriptor md = MethodDescriptor.parseDescriptor(invoke_dynamic.descriptor); + + String lambda_class_name = md.ret.value; + String lambda_method_name = invoke_dynamic.elementname; + String lambda_method_descriptor = ((PrimitiveConstant)bootstrap_arguments.get(2)).getString(); // method type + + LinkConstant content_method_handle = (LinkConstant)bootstrap_arguments.get(1); + + ClassNode node_lambda = clprocessor.new ClassNode(content_method_handle.classname, content_method_handle.elementname, + content_method_handle.descriptor, content_method_handle.index1, + lambda_class_name, lambda_method_name, lambda_method_descriptor, cl); + node_lambda.simpleName = cl.qualifiedName + "##Lambda_" + invoke_dynamic.index1 + "_" + invoke_dynamic.index2; + node_lambda.enclosingMethod = InterpreterUtil.makeUniqueKey(mt.getName(), mt.getDescriptor()); + + node.nested.add(node_lambda); + node_lambda.parent = node; + + clprocessor.getMapRootClasses().put(node_lambda.simpleName, node_lambda); + mapMethodsLambda.put(node_lambda.lambda_information.content_method_key, node_lambda.simpleName); + } + } + } + } + + mt.releaseResources(); + } + + // build class hierarchy on lambda + for(ClassNode nd : node.nested) { + if(nd.type == ClassNode.CLASS_LAMBDA) { + String parent_class_name = mapMethodsLambda.get(nd.enclosingMethod); + if(parent_class_name != null) { + ClassNode parent_class = clprocessor.getMapRootClasses().get(parent_class_name); + + parent_class.nested.add(nd); + nd.parent = parent_class; + } + } + } + + // FIXME: mixed hierarchy? + + return false; + } + +} diff --git a/src/org/jetbrains/java/decompiler/main/rels/MethodProcessorThread.java b/src/org/jetbrains/java/decompiler/main/rels/MethodProcessorThread.java new file mode 100644 index 0000000..c3c180b --- /dev/null +++ b/src/org/jetbrains/java/decompiler/main/rels/MethodProcessorThread.java @@ -0,0 +1,274 @@ +/* + * 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 org.jetbrains.java.decompiler.code.InstructionSequence; +import org.jetbrains.java.decompiler.code.cfg.ControlFlowGraph; +import org.jetbrains.java.decompiler.main.DecompilerContext; +import org.jetbrains.java.decompiler.main.collectors.CounterContainer; +import org.jetbrains.java.decompiler.main.extern.IFernflowerLogger; +import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences; +import org.jetbrains.java.decompiler.modules.code.DeadCodeHelper; +import org.jetbrains.java.decompiler.modules.decompiler.ClearStructHelper; +import org.jetbrains.java.decompiler.modules.decompiler.DomHelper; +import org.jetbrains.java.decompiler.modules.decompiler.ExitHelper; +import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor; +import org.jetbrains.java.decompiler.modules.decompiler.FinallyProcessor; +import org.jetbrains.java.decompiler.modules.decompiler.IdeaNotNullHelper; +import org.jetbrains.java.decompiler.modules.decompiler.IfHelper; +import org.jetbrains.java.decompiler.modules.decompiler.InlineSingleBlockHelper; +import org.jetbrains.java.decompiler.modules.decompiler.LabelHelper; +import org.jetbrains.java.decompiler.modules.decompiler.LoopExtractHelper; +import org.jetbrains.java.decompiler.modules.decompiler.MergeHelper; +import org.jetbrains.java.decompiler.modules.decompiler.PPandMMHelper; +import org.jetbrains.java.decompiler.modules.decompiler.SecondaryFunctionsHelper; +import org.jetbrains.java.decompiler.modules.decompiler.SequenceHelper; +import org.jetbrains.java.decompiler.modules.decompiler.StackVarsProcessor; +import org.jetbrains.java.decompiler.modules.decompiler.deobfuscator.ExceptionDeobfuscator; +import org.jetbrains.java.decompiler.modules.decompiler.stats.RootStatement; +import org.jetbrains.java.decompiler.modules.decompiler.vars.VarProcessor; +import org.jetbrains.java.decompiler.struct.StructClass; +import org.jetbrains.java.decompiler.struct.StructMethod; + +public class MethodProcessorThread implements Runnable { + + private StructMethod method; + private VarProcessor varproc; + private DecompilerContext parentContext; + + private RootStatement root; + + private Throwable error; + + public MethodProcessorThread(StructMethod method, VarProcessor varproc, + DecompilerContext parentContext) { + this.method = method; + this.varproc = varproc; + this.parentContext = parentContext; + } + + public void run() { + + DecompilerContext.setCurrentContext(parentContext); + + error = null; + root = null; + + try { + root = codeToJava(method, varproc); + + synchronized(this) { + this.notify(); + } + + } catch(ThreadDeath ex) { + ; + } catch(Throwable ex) { + error = ex; + } + + } + + public static RootStatement codeToJava(StructMethod mt, VarProcessor varproc) throws IOException { + + StructClass cl = mt.getClassStruct(); + + boolean isInitializer = "<clinit>".equals(mt.getName()); // for now static initializer only + + mt.expandData(); + InstructionSequence seq = mt.getInstructionSequence(); + ControlFlowGraph graph = new ControlFlowGraph(seq); + +// System.out.println(graph.toString()); + + +// if(mt.getName().endsWith("_getActiveServers")) { +// System.out.println(); +// } + + //DotExporter.toDotFile(graph, new File("c:\\Temp\\fern1.dot"), true); + + DeadCodeHelper.removeDeadBlocks(graph); + graph.inlineJsr(mt); + +// DotExporter.toDotFile(graph, new File("c:\\Temp\\fern4.dot"), true); + + // TODO: move to the start, before jsr inlining + DeadCodeHelper.connectDummyExitBlock(graph); + + DeadCodeHelper.removeGotos(graph); + ExceptionDeobfuscator.removeCircularRanges(graph); + //DeadCodeHelper.removeCircularRanges(graph); + + +// DotExporter.toDotFile(graph, new File("c:\\Temp\\fern3.dot"), true); + + ExceptionDeobfuscator.restorePopRanges(graph); + + if(DecompilerContext.getOption(IFernflowerPreferences.REMOVE_EMPTY_RANGES)) { + ExceptionDeobfuscator.removeEmptyRanges(graph); + } + +// DotExporter.toDotFile(graph, new File("c:\\Temp\\fern3.dot"), true); + + if(DecompilerContext.getOption(IFernflowerPreferences.NO_EXCEPTIONS_RETURN)) { + // special case: single return instruction outside of a protected range + DeadCodeHelper.incorporateValueReturns(graph); + } + +// DotExporter.toDotFile(graph, new File("c:\\Temp\\fern5.dot"), true); + +// ExceptionDeobfuscator.restorePopRanges(graph); + ExceptionDeobfuscator.insertEmptyExceptionHandlerBlocks(graph); + + DeadCodeHelper.mergeBasicBlocks(graph); + + DecompilerContext.getCountercontainer().setCounter(CounterContainer.VAR_COUNTER, mt.getLocalVariables()); + + //DotExporter.toDotFile(graph, new File("c:\\Temp\\fern3.dot"), true); + //System.out.println(graph.toString()); + + if(ExceptionDeobfuscator.hasObfuscatedExceptions(graph)) { + DecompilerContext.getLogger().writeMessage("Heavily obfuscated exception ranges found!", IFernflowerLogger.WARNING); + } + + RootStatement root = DomHelper.parseGraph(graph); + + if(!DecompilerContext.getOption(IFernflowerPreferences.FINALLY_CATCHALL)) { + FinallyProcessor fproc = new FinallyProcessor(varproc); + while(fproc.iterateGraph(mt, root, graph)) { + + //DotExporter.toDotFile(graph, new File("c:\\Temp\\fern2.dot"), true); + //System.out.println(graph.toString()); + + //System.out.println("~~~~~~~~~~~~~~~~~~~~~~ \r\n"+root.toJava()); + + root = DomHelper.parseGraph(graph); + } + } + + // remove synchronized exception handler + // not until now because of comparison between synchronized statements in the finally cycle + DomHelper.removeSynchronizedHandler(root); + +// DotExporter.toDotFile(graph, new File("c:\\Temp\\fern3.dot"), true); +// System.out.println(graph.toString()); + +// LabelHelper.lowContinueLabels(root, new HashSet<StatEdge>()); + + SequenceHelper.condenseSequences(root); + + ClearStructHelper.clearStatements(root); + + ExprProcessor proc = new ExprProcessor(); + proc.processStatement(root, cl); + +// DotExporter.toDotFile(graph, new File("c:\\Temp\\fern3.dot"), true); +// System.out.println(graph.toString()); + + //System.out.println("~~~~~~~~~~~~~~~~~~~~~~ \r\n"+root.toJava()); + + for(;;) { + StackVarsProcessor stackproc = new StackVarsProcessor(); + stackproc.simplifyStackVars(root, mt, cl); + + //System.out.println("~~~~~~~~~~~~~~~~~~~~~~ \r\n"+root.toJava()); + + varproc.setVarVersions(root); + +// System.out.println("~~~~~~~~~~~~~~~~~~~~~~ \r\n"+root.toJava()); + + if(!new PPandMMHelper().findPPandMM(root)) { + break; + } + } + + for(;;) { + + LabelHelper.cleanUpEdges(root); + + for(;;) { + + MergeHelper.enhanceLoops(root); + + if(LoopExtractHelper.extractLoops(root)) { + continue; + } + + if(!IfHelper.mergeAllIfs(root)) { + break; + } + } + + if(DecompilerContext.getOption(IFernflowerPreferences.IDEA_NOT_NULL_ANNOTATION)) { + + if(IdeaNotNullHelper.removeHardcodedChecks(root, mt)) { + + SequenceHelper.condenseSequences(root); + + StackVarsProcessor stackproc = new StackVarsProcessor(); + stackproc.simplifyStackVars(root, mt, cl); + + varproc.setVarVersions(root); + } + } + + LabelHelper.identifyLabels(root); + +// System.out.println("~~~~~~~~~~~~~~~~~~~~~~ \r\n"+root.toJava()); + + if(InlineSingleBlockHelper.inlineSingleBlocks(root)) { + continue; + } + + // initializer may have at most one return point, so no transformation of method exits permitted + if(isInitializer || !ExitHelper.condenseExits(root)) { + break; + } + + // FIXME: !! +// if(!EliminateLoopsHelper.eliminateLoops(root)) { +// break; +// } + } + + ExitHelper.removeRedundantReturns(root); + + SecondaryFunctionsHelper.identifySecondaryFunctions(root); + + varproc.setVarDefinitions(root); + + // must be the last invocation, because it makes the statement structure inconsistent + // FIXME: new edge type needed + LabelHelper.replaceContinueWithBreak(root); + + mt.releaseResources(); + +// System.out.println("++++++++++++++++++++++/// \r\n"+root.toJava()); + + return root; + } + + public RootStatement getRoot() { + return root; + } + + public Throwable getError() { + return error; + } + +} diff --git a/src/org/jetbrains/java/decompiler/main/rels/MethodWrapper.java b/src/org/jetbrains/java/decompiler/main/rels/MethodWrapper.java new file mode 100644 index 0000000..4f8d6f8 --- /dev/null +++ b/src/org/jetbrains/java/decompiler/main/rels/MethodWrapper.java @@ -0,0 +1,62 @@ +/* + * 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.util.HashSet; +import java.util.List; + +import org.jetbrains.java.decompiler.main.collectors.CounterContainer; +import org.jetbrains.java.decompiler.modules.decompiler.sforms.DirectGraph; +import org.jetbrains.java.decompiler.modules.decompiler.sforms.FlattenStatementsHelper; +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.StructMethod; + + +public class MethodWrapper { + + public RootStatement root; + + public VarProcessor varproc; + + public StructMethod methodStruct; + + public CounterContainer counter; + + public DirectGraph graph; + + public List<VarVersionPaar> signatureFields; + + public boolean decompiledWithErrors; + + public HashSet<String> setOuterVarNames = new HashSet<String>(); + + public MethodWrapper(RootStatement root, VarProcessor varproc, StructMethod methodStruct, CounterContainer counter) { + this.root = root; + this.varproc = varproc; + this.methodStruct = methodStruct; + this.counter = counter; + } + + public DirectGraph getOrBuildGraph() { + if(graph == null && root != null) { + FlattenStatementsHelper flatthelper = new FlattenStatementsHelper(); + graph = flatthelper.buildDirectGraph(root); + } + return graph; + } + +} diff --git a/src/org/jetbrains/java/decompiler/main/rels/NestedClassProcessor.java b/src/org/jetbrains/java/decompiler/main/rels/NestedClassProcessor.java new file mode 100644 index 0000000..1c962ec --- /dev/null +++ b/src/org/jetbrains/java/decompiler/main/rels/NestedClassProcessor.java @@ -0,0 +1,1020 @@ +/* + * 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.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedList; +import java.util.List; +import java.util.Set; +import java.util.Map.Entry; + +import org.jetbrains.java.decompiler.code.CodeConstants; +import org.jetbrains.java.decompiler.main.DecompilerContext; +import org.jetbrains.java.decompiler.main.ClassesProcessor.ClassNode; +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.AssignmentExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.ConstExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.FieldExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.InvocationExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.NewExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.VarExprent; +import org.jetbrains.java.decompiler.modules.decompiler.sforms.DirectGraph; +import org.jetbrains.java.decompiler.modules.decompiler.sforms.DirectNode; +import org.jetbrains.java.decompiler.modules.decompiler.stats.DoStatement; +import org.jetbrains.java.decompiler.modules.decompiler.stats.RootStatement; +import org.jetbrains.java.decompiler.modules.decompiler.stats.Statement; +import org.jetbrains.java.decompiler.modules.decompiler.vars.VarTypeProcessor; +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.StructEnclosingMethodAttribute; +import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor; +import org.jetbrains.java.decompiler.struct.gen.VarType; +import org.jetbrains.java.decompiler.util.InterpreterUtil; + +public class NestedClassProcessor { + + + public void processClass(ClassNode root, ClassNode node) { + + // hide synthetic lambda content methods + if(node.type == ClassNode.CLASS_LAMBDA && !node.lambda_information.is_method_reference) { + ClassNode node_content = DecompilerContext.getClassprocessor().getMapRootClasses().get(node.classStruct.qualifiedName); + if(node_content != null && node_content.wrapper != null) { + node_content.wrapper.getHideMembers().add(node.lambda_information.content_method_key); + } + } + + if(node.nested.isEmpty()) { + return; + } + + if(node.type != ClassNode.CLASS_LAMBDA) { + + computeLocalVarsAndDefinitions(node); + + // for each local or anonymous class ensure not empty enclosing method + checkNotFoundClasses(root, node); + } + + int nameless = 0, synthetics = 0; + for(ClassNode child : node.nested) { + // ensure not-empty class name + if ((child.type == ClassNode.CLASS_LOCAL || child.type == ClassNode.CLASS_MEMBER) && child.simpleName == null) { + StructClass cl = child.classStruct; + if (((child.access | cl.access_flags) & CodeConstants.ACC_SYNTHETIC) != 0 || cl.getAttributes().containsKey("Synthetic")) { + child.simpleName = "SyntheticClass_" + (++synthetics); + } else { + DecompilerContext.getLogger().writeMessage("Nameless local or member class " + cl.qualifiedName + "!", IFernflowerLogger.WARNING); + child.simpleName = "NamelessClass_" + (++nameless); + } + } + } + + for(ClassNode child : node.nested) { + if(child.type == ClassNode.CLASS_LAMBDA) { + setLambdaVars(node, child); + } else { + if(child.type != ClassNode.CLASS_MEMBER || (child.access & CodeConstants.ACC_STATIC) == 0) { + insertLocalVars(node, child); + + if(child.type == ClassNode.CLASS_LOCAL) { + setLocalClassDefinition(node.wrapper.getMethods().getWithKey(child.enclosingMethod), child); + } + } + } + } + + for(ClassNode child : node.nested) { + processClass(root, child); + } + + } + + private void setLambdaVars(ClassNode parent, ClassNode child) { + + if(child.lambda_information.is_method_reference) { // method reference, no code and no parameters + return; + } + + final MethodWrapper meth = parent.wrapper.getMethods().getWithKey(child.lambda_information.content_method_key); + final MethodWrapper encmeth = parent.wrapper.getMethods().getWithKey(child.enclosingMethod); + + MethodDescriptor md_lambda = MethodDescriptor.parseDescriptor(child.lambda_information.method_descriptor); + final MethodDescriptor md_content = MethodDescriptor.parseDescriptor(child.lambda_information.content_method_descriptor); + + final int vars_count = md_content.params.length - md_lambda.params.length; +// if(vars_count < 0) { // should not happen, but just in case... +// vars_count = 0; +// } + + final boolean is_static_lambda_content = child.lambda_information.is_content_method_static; + + final String parent_class_name = parent.wrapper.getClassStruct().qualifiedName; + final String lambda_class_name = child.simpleName; + + final VarType lambda_class_type = new VarType(lambda_class_name, true); + + // this pointer + if(!is_static_lambda_content && DecompilerContext.getOption(IFernflowerPreferences.LAMBDA_TO_ANONYMOUS_CLASS)) { + meth.varproc.getThisvars().put(new VarVersionPaar(0, 0), parent_class_name); + meth.varproc.setVarName(new VarVersionPaar(0, 0), parent.simpleName + ".this"); + } + + // local variables + DirectGraph graph = encmeth.getOrBuildGraph(); + + final HashMap<VarVersionPaar, String> mapNewNames = new HashMap<VarVersionPaar, String>(); + + graph.iterateExprents(new DirectGraph.ExprentIterator() { + public int processExprent(Exprent exprent) { + + List<Exprent> lst = exprent.getAllExprents(true); + lst.add(exprent); + + for(Exprent expr: lst) { + + if(expr.type == Exprent.EXPRENT_NEW) { + NewExprent new_expr = (NewExprent)expr; + if(new_expr.isLambda() && lambda_class_type.equals(new_expr.getNewtype())) { + + InvocationExprent inv_dynamic = new_expr.getConstructor(); + + int param_index = is_static_lambda_content ? 0 : 1;; + int varindex = is_static_lambda_content ? 0 : 1; + + for(int i = 0; i < vars_count; ++i) { + + Exprent param = inv_dynamic.getLstParameters().get(param_index + i); + + if(param.type == Exprent.EXPRENT_VAR) { + VarVersionPaar enc_varpaar = new VarVersionPaar((VarExprent)param); + String enc_varname = encmeth.varproc.getVarName(enc_varpaar); + + //meth.varproc.setVarName(new VarVersionPaar(varindex, 0), enc_varname); + mapNewNames.put(new VarVersionPaar(varindex, 0), enc_varname); + } + + varindex+=md_content.params[i].stack_size; + } + + } + } + } + + return 0; + } + }); + + // update names of local variables + HashSet<String> setNewOuterNames = new HashSet<String>(mapNewNames.values()); + setNewOuterNames.removeAll(meth.setOuterVarNames); + + meth.varproc.refreshVarNames(new VarNamesCollector(setNewOuterNames)); + meth.setOuterVarNames.addAll(setNewOuterNames); + + for(Entry<VarVersionPaar, String> entr : mapNewNames.entrySet()) { + meth.varproc.setVarName(entr.getKey(), entr.getValue()); + } + + } + + private void checkNotFoundClasses(ClassNode root, ClassNode node) { + + List<ClassNode> lstChildren = new ArrayList<ClassNode>(node.nested); + + for(ClassNode child : lstChildren) { + + if((child.type == ClassNode.CLASS_LOCAL || child.type == ClassNode.CLASS_ANONYMOUS) && child.enclosingMethod == null) { + + Set<String> setEnclosing = child.enclosingClasses; + + if(setEnclosing.size() == 1) { + StructEnclosingMethodAttribute attr = (StructEnclosingMethodAttribute)child.classStruct.getAttributes().getWithKey("EnclosingMethod"); + if(attr != null && attr.getMethodName() != null) { + if(node.classStruct.qualifiedName.equals(attr.getClassname()) && + node.classStruct.getMethod(attr.getMethodName(), attr.getMethodDescriptor()) != null) { + child.enclosingMethod = InterpreterUtil.makeUniqueKey(attr.getMethodName(), attr.getMethodDescriptor()); + continue; + } + } + } + + node.nested.remove(child); + child.parent = null; + setEnclosing.remove(node.classStruct.qualifiedName); + + boolean hasEnclosing = !setEnclosing.isEmpty(); + if(hasEnclosing) { + hasEnclosing = insertNestedClass(root, child); + } + + if(!hasEnclosing) { + if(child.type == ClassNode.CLASS_ANONYMOUS) { + DecompilerContext.getLogger().writeMessage("Unreferenced anonymous class "+child.classStruct.qualifiedName+"!", IFernflowerLogger.WARNING); + } else if(child.type == ClassNode.CLASS_LOCAL) { + DecompilerContext.getLogger().writeMessage("Unreferenced local class "+child.classStruct.qualifiedName+"!", IFernflowerLogger.WARNING); + } + } + } + } + } + + private boolean insertNestedClass(ClassNode root, ClassNode child) { + + Set<String> setEnclosing = child.enclosingClasses; + + LinkedList<ClassNode> stack = new LinkedList<ClassNode>(); + stack.add(root); + + while(!stack.isEmpty()) { + + ClassNode node = stack.removeFirst(); + + if(setEnclosing.contains(node.classStruct.qualifiedName)) { + node.nested.add(child); + child.parent = node; + + return true; + } + + // note: ordered list + stack.addAll(node.nested); + } + + return false; + } + + + private void computeLocalVarsAndDefinitions(final ClassNode node) { + + // local var masks + // class name, constructor descriptor, field mask + final HashMap<String, HashMap<String, List<VarFieldPair>>> mapVarMasks = new HashMap<String, HashMap<String, List<VarFieldPair>>>(); + + int cltypes = 0; + + for(ClassNode nd: node.nested) { + if(nd.type != ClassNode.CLASS_LAMBDA) { + if((nd.access & CodeConstants.ACC_STATIC) == 0 && (nd.access & CodeConstants.ACC_INTERFACE) == 0) { + + cltypes |= nd.type; + + HashMap<String, List<VarFieldPair>> mask = getMaskLocalVars(nd.wrapper); + if(mask.isEmpty()) { + DecompilerContext.getLogger().writeMessage("Nested class "+nd.classStruct.qualifiedName+" has no constructor!", IFernflowerLogger.WARNING); + } else { + mapVarMasks.put(nd.classStruct.qualifiedName, mask); + } + } + } + } + + // local var masks + final HashMap<String, HashMap<String, List<VarFieldPair>>> mapVarFieldPairs = new HashMap<String, HashMap<String, List<VarFieldPair>>>(); + + if(cltypes != ClassNode.CLASS_MEMBER) { + + // iterate enclosing class + for(final MethodWrapper meth: node.wrapper.getMethods()) { + + if(meth.root != null) { // neither abstract, nor native + DirectGraph graph = meth.getOrBuildGraph(); + + graph.iterateExprents(new DirectGraph.ExprentIterator() { + public int processExprent(Exprent exprent) { + List<Exprent> lst = exprent.getAllExprents(true); + lst.add(exprent); + + for(Exprent expr: lst) { + + if(expr.type == Exprent.EXPRENT_NEW) { + InvocationExprent constr = ((NewExprent)expr).getConstructor(); + + if(constr != null && mapVarMasks.containsKey(constr.getClassname())) { // non-static inner class constructor + + String refclname = constr.getClassname(); + + ClassNode nestedClassNode = node.getClassNode(refclname); + + if(nestedClassNode.type != ClassNode.CLASS_MEMBER) { + + List<VarFieldPair> mask = mapVarMasks.get(refclname).get(constr.getStringDescriptor()); + + if(!mapVarFieldPairs.containsKey(refclname)) { + mapVarFieldPairs.put(refclname, new HashMap<String, List<VarFieldPair>>()); + } + + List<VarFieldPair> lstTemp = new ArrayList<VarFieldPair>(); + + for(int i=0;i<mask.size();i++) { + Exprent param = constr.getLstParameters().get(i); + VarFieldPair pair = null; + + if(param.type == Exprent.EXPRENT_VAR && mask.get(i) != null) { + VarVersionPaar varpaar = new VarVersionPaar((VarExprent)param); + + // FIXME: final flags of variables are wrong! Correct the entire final functionality. +// if(meth.varproc.getVarFinal(varpaar) != VarTypeProcessor.VAR_NONFINAL) { + pair = new VarFieldPair(mask.get(i).keyfield, varpaar); +// } + } + + lstTemp.add(pair); + } + + List<VarFieldPair> pairmask = mapVarFieldPairs.get(refclname).get(constr.getStringDescriptor()); + + if(pairmask == null) { + pairmask = lstTemp; + } else { + for(int i=0;i<pairmask.size();i++) { + if(!InterpreterUtil.equalObjects(pairmask.get(i), lstTemp.get(i))) { + pairmask.set(i, null); + } + } + } + + mapVarFieldPairs.get(refclname).put(constr.getStringDescriptor(), pairmask); + nestedClassNode.enclosingMethod = InterpreterUtil.makeUniqueKey(meth.methodStruct.getName(), meth.methodStruct.getDescriptor()); + } + } + } + + } + return 0; + } + }); + } + } + } + + // merge var masks + for(Entry<String, HashMap<String, List<VarFieldPair>>> entcl : mapVarMasks.entrySet()) { + + ClassNode nestedNode = node.getClassNode(entcl.getKey()); + + // intersection + List<VarFieldPair> intrPairMask = null; + // merge referenced constructors + if(mapVarFieldPairs.containsKey(entcl.getKey())) { + for(List<VarFieldPair> mask : mapVarFieldPairs.get(entcl.getKey()).values()) { + if(intrPairMask == null) { + intrPairMask = new ArrayList<VarFieldPair>(mask); + } else { + mergeListSignatures(intrPairMask, mask, false); + } + } + } + + List<VarFieldPair> intrMask = null; + // merge all constructors + for(List<VarFieldPair> mask : entcl.getValue().values()) { + if(intrMask == null) { + intrMask = new ArrayList<VarFieldPair>(mask); + } else { + mergeListSignatures(intrMask, mask, false); + } + } + + if(intrPairMask == null) { // member or local and never instantiated + intrPairMask = new ArrayList<VarFieldPair>(intrMask); + + boolean found = false; + + for(int i=0;i<intrPairMask.size();i++) { + if(intrPairMask.get(i) != null) { + if(found) { + intrPairMask.set(i, null); + } + found = true; + } + } + } + + mergeListSignatures(intrPairMask, intrMask, true); + + for(int i=0;i<intrPairMask.size();i++) { + VarFieldPair pair = intrPairMask.get(i); + if(pair != null && pair.keyfield.length() > 0) { + nestedNode.mapFieldsToVars.put(pair.keyfield, pair.varpaar); + } + } + + // set resulting constructor signatures + for(Entry<String, List<VarFieldPair>> entmt : entcl.getValue().entrySet()) { + mergeListSignatures(entmt.getValue(), intrPairMask, false); + + MethodWrapper meth = nestedNode.wrapper.getMethodWrapper("<init>", entmt.getKey()); + meth.signatureFields = new ArrayList<VarVersionPaar>(); + + for(VarFieldPair pair : entmt.getValue()) { + meth.signatureFields.add(pair==null?null:pair.varpaar); + } + } + + } + + } + + private void insertLocalVars(final ClassNode parent, final ClassNode child) { + + // enclosing method, is null iff member class + MethodWrapper encmeth = parent.wrapper.getMethods().getWithKey(child.enclosingMethod); + + // iterate all child methods + for(final MethodWrapper meth : child.wrapper.getMethods()) { + + if(meth.root != null) { // neither abstract nor native + + // local var names + HashMap<VarVersionPaar, String> mapNewNames = new HashMap<VarVersionPaar, String>(); + // local var types + HashMap<VarVersionPaar, VarType> mapNewTypes = new HashMap<VarVersionPaar, VarType>(); + + final HashMap<Integer, VarVersionPaar> mapParamsToNewVars = new HashMap<Integer, VarVersionPaar>(); + if(meth.signatureFields != null) { + int index = 0; + int varindex = 1; + MethodDescriptor md = MethodDescriptor.parseDescriptor(meth.methodStruct.getDescriptor()); + + for(VarVersionPaar paar : meth.signatureFields) { + if(paar != null) { + VarVersionPaar newvar = new VarVersionPaar(meth.counter.getCounterAndIncrement(CounterContainer.VAR_COUNTER), 0); + + mapParamsToNewVars.put(varindex, newvar); + + String varname = null; + VarType vartype = null; + + if(child.type != ClassNode.CLASS_MEMBER) { + varname = encmeth.varproc.getVarName(paar); + vartype = encmeth.varproc.getVarType(paar); + + encmeth.varproc.setVarFinal(paar, VarTypeProcessor.VAR_FINALEXPLICIT); + } + + if(paar.var == -1 || "this".equals(varname)) { + if(parent.simpleName == null) { + // anonymous enclosing class, no access to this + varname = VarExprent.VAR_NAMELESS_ENCLOSURE; + } else { + varname = parent.simpleName+".this"; + } + meth.varproc.getThisvars().put(newvar, parent.classStruct.qualifiedName); + } + + mapNewNames.put(newvar, varname); + mapNewTypes.put(newvar, vartype); + } + varindex+=md.params[index++].stack_size; + } + } + + // new vars + final HashMap<String, VarVersionPaar> mapFieldsToNewVars = new HashMap<String, VarVersionPaar>(); + + for(ClassNode clnode = child; clnode != null; clnode = clnode.parent) { + + for(Entry<String, VarVersionPaar> entr : clnode.mapFieldsToVars.entrySet()) { + VarVersionPaar newvar = new VarVersionPaar(meth.counter.getCounterAndIncrement(CounterContainer.VAR_COUNTER), 0); + + mapFieldsToNewVars.put(InterpreterUtil.makeUniqueKey(clnode.classStruct.qualifiedName, entr.getKey()), newvar); + + String varname = null; + VarType vartype = null; + + if(clnode.type != ClassNode.CLASS_MEMBER) { + + MethodWrapper enclosing_method = clnode.parent.wrapper.getMethods().getWithKey(clnode.enclosingMethod); + + varname = enclosing_method.varproc.getVarName(entr.getValue()); + vartype = enclosing_method.varproc.getVarType(entr.getValue()); + + enclosing_method.varproc.setVarFinal(entr.getValue(), VarTypeProcessor.VAR_FINALEXPLICIT); + } + + if(entr.getValue().var == -1 || "this".equals(varname)) { + if(clnode.parent.simpleName == null) { + // anonymous enclosing class, no access to this + varname = VarExprent.VAR_NAMELESS_ENCLOSURE; + } else { + varname = clnode.parent.simpleName+".this"; + } + meth.varproc.getThisvars().put(newvar, clnode.parent.classStruct.qualifiedName); + } + + mapNewNames.put(newvar, varname); + mapNewTypes.put(newvar, vartype); + + // hide synthetic field + if(clnode == child) { // fields higher up the chain were already handled with their classes + StructField fd = child.classStruct.getFields().getWithKey(entr.getKey()); + child.wrapper.getHideMembers().add(InterpreterUtil.makeUniqueKey(fd.getName(), fd.getDescriptor())); + } + } + } + + HashSet<String> setNewOuterNames = new HashSet<String>(mapNewNames.values()); + setNewOuterNames.removeAll(meth.setOuterVarNames); + + meth.varproc.refreshVarNames(new VarNamesCollector(setNewOuterNames)); + meth.setOuterVarNames.addAll(setNewOuterNames); + + for(Entry<VarVersionPaar, String> entr : mapNewNames.entrySet()) { + VarVersionPaar varpaar = entr.getKey(); + VarType vartype = mapNewTypes.get(varpaar); + + meth.varproc.setVarName(varpaar, entr.getValue()); + if(vartype != null) { + meth.varproc.setVarType(varpaar, vartype); + } + } + + DirectGraph graph = meth.getOrBuildGraph(); + + graph.iterateExprents(new DirectGraph.ExprentIterator() { + public int processExprent(Exprent exprent) { + + if(exprent.type == Exprent.EXPRENT_ASSIGNMENT) { + AssignmentExprent asexpr = (AssignmentExprent)exprent; + if(asexpr.getLeft().type == Exprent.EXPRENT_FIELD) { + FieldExprent fexpr = (FieldExprent)asexpr.getLeft(); + + if(fexpr.getClassname().equals(child.classStruct.qualifiedName) && // process this class only + mapFieldsToNewVars.containsKey(InterpreterUtil.makeUniqueKey(child.classStruct.qualifiedName, + InterpreterUtil.makeUniqueKey(fexpr.getName(), fexpr.getDescriptor().descriptorString)))) { + return 2; + } + + //if(fexpr.getClassname().equals(child.classStruct.qualifiedName) && + // mapFieldsToNewVars.containsKey(InterpreterUtil.makeUniqueKey(fexpr.getName(), fexpr.getDescriptor().descriptorString))) { + // return 2; + //} + } + } + + if(child.type == ClassNode.CLASS_ANONYMOUS && "<init>".equals(meth.methodStruct.getName()) + && exprent.type == Exprent.EXPRENT_INVOCATION) { + InvocationExprent invexpr = (InvocationExprent)exprent; + if(invexpr.getFunctype() == InvocationExprent.TYP_INIT) { + // invocation of the super constructor in an anonymous class + child.superInvocation = invexpr; // FIXME: save original names of parameters + return 2; + } + } + + replaceExprent(exprent); + + return 0; + } + + private Exprent replaceExprent(Exprent exprent) { + + if(exprent.type == Exprent.EXPRENT_VAR) { + int varindex = ((VarExprent)exprent).getIndex(); + if(mapParamsToNewVars.containsKey(varindex)) { + VarVersionPaar newvar = mapParamsToNewVars.get(varindex); + meth.varproc.getExternvars().add(newvar); + return new VarExprent(newvar.var, meth.varproc.getVarType(newvar), meth.varproc); + } + } else if(exprent.type == Exprent.EXPRENT_FIELD) { + FieldExprent fexpr = (FieldExprent)exprent; + + String keyField = InterpreterUtil.makeUniqueKey(fexpr.getClassname(), InterpreterUtil.makeUniqueKey(fexpr.getName(), fexpr.getDescriptor().descriptorString)); + + if(mapFieldsToNewVars.containsKey(keyField)) { + //if(fexpr.getClassname().equals(child.classStruct.qualifiedName) && + // mapFieldsToNewVars.containsKey(keyField)) { + VarVersionPaar newvar = mapFieldsToNewVars.get(keyField); + meth.varproc.getExternvars().add(newvar); + return new VarExprent(newvar.var, meth.varproc.getVarType(newvar), meth.varproc); + } + } + + boolean replaced = true; + while(replaced) { + replaced = false; + + for(Exprent expr: exprent.getAllExprents()) { + Exprent retexpr = replaceExprent(expr); + if(retexpr != null) { + exprent.replaceExprent(expr, retexpr); + replaced = true; + break; + } + } + } + + return null; + } + }); + + } + } + + } + + private HashMap<String, List<VarFieldPair>> getMaskLocalVars(ClassWrapper wrapper) { + + HashMap<String, List<VarFieldPair>> mapMasks = new HashMap<String, List<VarFieldPair>>(); + + StructClass cl = wrapper.getClassStruct(); + + // iterate over constructors + for(StructMethod mt: cl.getMethods()) { + if("<init>".equals(mt.getName())) { + + MethodDescriptor md = MethodDescriptor.parseDescriptor(mt.getDescriptor()); + + MethodWrapper meth = wrapper.getMethodWrapper("<init>", mt.getDescriptor()); + DirectGraph graph = meth.getOrBuildGraph(); + + if(graph != null) { // something gone wrong, should not be null + List<VarFieldPair> fields = new ArrayList<VarFieldPair>(); + + int varindex = 1; + for(int i=0;i<md.params.length;i++) { // no static methods allowed + String keyField = getEnclosingVarField(cl, meth, graph, varindex); + fields.add(keyField==null?null:new VarFieldPair(keyField, new VarVersionPaar(-1, 0))); // TODO: null? + varindex+=md.params[i].stack_size; + } + mapMasks.put(mt.getDescriptor(), fields); + } + } + } + + return mapMasks; + } + + private String getEnclosingVarField(StructClass cl, MethodWrapper meth, DirectGraph graph, final int index) { + + String field = ""; + + // parameter variable final + if(meth.varproc.getVarFinal(new VarVersionPaar(index, 0)) == VarTypeProcessor.VAR_NONFINAL) { + return null; + } + + boolean notsynth = DecompilerContext.getOption(IFernflowerPreferences.SYNTHETIC_NOT_SET); + + // no loop at the begin + DirectNode firstnode = graph.first; + if(firstnode.preds.isEmpty()) { + // assignment to a final synthetic field? + for(Exprent exprent: firstnode.exprents) { + if(exprent.type == Exprent.EXPRENT_ASSIGNMENT) { + AssignmentExprent asexpr = (AssignmentExprent)exprent; + if(asexpr.getRight().type == Exprent.EXPRENT_VAR && ((VarExprent)asexpr.getRight()).getIndex() == index) { + if(asexpr.getLeft().type == Exprent.EXPRENT_FIELD) { + + FieldExprent left = (FieldExprent)asexpr.getLeft(); + StructField fd = cl.getField(left.getName(), left.getDescriptor().descriptorString); + + if(fd != null) { // local (== not inherited) field + if(cl.qualifiedName.equals(left.getClassname()) && + (fd.access_flags & CodeConstants.ACC_FINAL) != 0 && + ((fd.access_flags & CodeConstants.ACC_SYNTHETIC) != 0 || + fd.getAttributes().containsKey("Synthetic") || + (notsynth && (fd.access_flags & CodeConstants.ACC_PRIVATE) != 0))) { + field = InterpreterUtil.makeUniqueKey(left.getName(), left.getDescriptor().descriptorString); + break; + } + } + } + } + } + } + } + + return field; + } + + private void mergeListSignatures(List<VarFieldPair> first, List<VarFieldPair> second, boolean both) { + + int i=1; + for(;;) { + if(first.size() <= i || second.size() <= i) { + break; + } + + VarFieldPair fobj = first.get(first.size() - i); + VarFieldPair sobj = second.get(second.size() - i); + + boolean eq = false; + if(fobj == null || sobj == null) { + eq = (fobj == sobj); + } else { + eq = true; + if(fobj.keyfield.length()==0) { + fobj.keyfield = sobj.keyfield; + } else if(sobj.keyfield.length() == 0) { + if(both) { + sobj.keyfield = fobj.keyfield; + } + } else { + eq = fobj.keyfield.equals(sobj.keyfield); + } + } + + if(!eq) { + first.set(first.size() - i, null); + if(both) { + second.set(second.size() - i, null); + } + } else { + if(fobj != null) { + if(fobj.varpaar.var == -1) { + fobj.varpaar = sobj.varpaar; + } else { + sobj.varpaar = fobj.varpaar; + } + } + } + i++; + } + + for(int j=1;j<=first.size()-i;j++) { + first.set(j, null); + } + + if(both) { + for(int j=1;j<=second.size()-i;j++) { + second.set(j, null); + } + } + + // first + if(first.isEmpty()) { + if(!second.isEmpty() && both) { + second.set(0, null); + } + } else if(second.isEmpty()) { + first.set(0, null); + } else { + VarFieldPair fobj = first.get(0); + VarFieldPair sobj = second.get(0); + + boolean eq = false; + if(fobj == null || sobj == null) { + eq = (fobj == sobj); + } else { + eq = true; + if(fobj.keyfield.length()==0) { + fobj.keyfield = sobj.keyfield; + } else if(sobj.keyfield.length() == 0) { + if(both) { + sobj.keyfield = fobj.keyfield; + } + } else { + eq = fobj.keyfield.equals(sobj.keyfield); + } + } + + if(!eq) { + first.set(0, null); + if(both) { + second.set(0, null); + } + } else if(fobj != null) { + if(fobj.varpaar.var == -1) { + fobj.varpaar = sobj.varpaar; + } else { + sobj.varpaar = fobj.varpaar; + } + } + } + + } + + + private void setLocalClassDefinition(MethodWrapper meth, ClassNode node) { + + RootStatement root = meth.root; + + HashSet<Statement> setStats = new HashSet<Statement>(); + VarType classtype = new VarType(node.classStruct.qualifiedName, true); + + Statement stdef = getDefStatement(root, classtype, setStats); + if(stdef == null) { + // unreferenced local class + stdef = root.getFirst(); + } + + Statement first = findFirstBlock(stdef, setStats); + + List<Exprent> lst; + if(first == null) { + lst = stdef.getVarDefinitions(); + } else if(first.getExprents() == null) { + lst = first.getVarDefinitions(); + } else { + lst = first.getExprents(); + } + + + int addindex = 0; + for(Exprent expr: lst) { + if(searchForClass(expr, classtype)) { + break; + } + addindex++; + } + + VarExprent var = new VarExprent(meth.counter.getCounterAndIncrement(CounterContainer.VAR_COUNTER), + classtype, meth.varproc); + var.setDefinition(true); + var.setClassdef(true); + + lst.add(addindex, var); + + } + + + + private Statement findFirstBlock(Statement stat, HashSet<Statement> setStats) { + + LinkedList<Statement> stack = new LinkedList<Statement>(); + stack.add(stat); + + while(!stack.isEmpty()) { + Statement st = stack.remove(0); + + if(stack.isEmpty() || setStats.contains(st)) { + + if(st.isLabeled() && !stack.isEmpty()) { + return st; + } + + if(st.getExprents() != null) { + return st; + } else { + stack.clear(); + + switch(st.type) { + case Statement.TYPE_SEQUENCE: + stack.addAll(0, st.getStats()); + break; + case Statement.TYPE_IF: + case Statement.TYPE_ROOT: + case Statement.TYPE_SWITCH: + case Statement.TYPE_SYNCRONIZED: + stack.add(st.getFirst()); + break; + default: + return st; + } + } + } + } + + return null; + } + + + private Statement getDefStatement(Statement stat, VarType classtype, HashSet<Statement> setStats) { + + List<Exprent> condlst = new ArrayList<Exprent>(); + Statement retstat = null; + + if(stat.getExprents() == null) { + int counter = 0; + + for(Object obj: stat.getSequentialObjects()) { + if(obj instanceof Statement) { + Statement st = (Statement)obj; + + Statement stTemp = getDefStatement(st, classtype, setStats); + + if(stTemp != null) { + if(counter == 1) { + retstat = stat; + break; + } + retstat = stTemp; + counter++; + } + + if(st.type == DoStatement.TYPE_DO) { + DoStatement dost = (DoStatement)st; + + condlst.addAll(dost.getInitExprentList()); + condlst.addAll(dost.getConditionExprentList()); + } + + } else if(obj instanceof Exprent) { + condlst.add((Exprent)obj); + } + } + } else { + condlst = stat.getExprents(); + } + + if(retstat != stat) { + for(Exprent exprent : condlst) { + if(exprent!=null && searchForClass(exprent, classtype)) { + retstat = stat; + break; + } + } + } + + if(retstat != null) { + setStats.add(stat); + } + + return retstat; + } + + private boolean searchForClass(Exprent exprent, VarType classtype) { + + List<Exprent> lst = exprent.getAllExprents(true); + lst.add(exprent); + + String classname = classtype.value; + + for(Exprent expr : lst) { + + boolean res = false; + + switch(expr.type) { + case Exprent.EXPRENT_CONST: + ConstExprent cexpr = (ConstExprent)expr; + res = (VarType.VARTYPE_CLASS.equals(cexpr.getConsttype()) && classname.equals(cexpr.getValue()) || + classtype.equals(cexpr.getConsttype())); + break; + case Exprent.EXPRENT_FIELD: + res = classname.equals(((FieldExprent)expr).getClassname()); + break; + case Exprent.EXPRENT_INVOCATION: + res = classname.equals(((InvocationExprent)expr).getClassname()); + break; + case Exprent.EXPRENT_NEW: + VarType newType = expr.getExprType(); + res = newType.type == CodeConstants.TYPE_OBJECT && classname.equals(newType.value); + break; + case Exprent.EXPRENT_VAR: + VarExprent vexpr = (VarExprent)expr; + if(vexpr.isDefinition()) { + VarType vtype = vexpr.getVartype(); + if(classtype.equals(vtype) || (vtype.arraydim > 0 && classtype.value.equals(vtype.value))) { + res = true; + } + } + } + + if(res) { + return true; + } + } + + return false; + } + + + private class VarFieldPair { + + public String keyfield = ""; + public VarVersionPaar varpaar; + + public VarFieldPair(String field, VarVersionPaar varpaar) { + this.keyfield = field; + this.varpaar = varpaar; + } + + @Override + public boolean equals(Object o) { + if(o == this) return true; + if(o == null || !(o instanceof VarFieldPair)) return false; + + VarFieldPair pair = (VarFieldPair)o; + return keyfield.equals(pair.keyfield) && varpaar.equals(pair.varpaar); + } + + @Override + public int hashCode() { + return keyfield.hashCode()+varpaar.hashCode(); + } + + } + +} diff --git a/src/org/jetbrains/java/decompiler/main/rels/NestedMemberAccess.java b/src/org/jetbrains/java/decompiler/main/rels/NestedMemberAccess.java new file mode 100644 index 0000000..3eda632 --- /dev/null +++ b/src/org/jetbrains/java/decompiler/main/rels/NestedMemberAccess.java @@ -0,0 +1,457 @@ +/* + * 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.util.HashMap; +import java.util.HashSet; +import java.util.LinkedList; + +import org.jetbrains.java.decompiler.code.CodeConstants; +import org.jetbrains.java.decompiler.main.DecompilerContext; +import org.jetbrains.java.decompiler.main.ClassesProcessor.ClassNode; +import org.jetbrains.java.decompiler.main.collectors.CounterContainer; +import org.jetbrains.java.decompiler.main.collectors.VarNamesCollector; +import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences; +import org.jetbrains.java.decompiler.modules.decompiler.exps.AssignmentExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.ExitExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.FieldExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.InvocationExprent; +import org.jetbrains.java.decompiler.modules.decompiler.exps.VarExprent; +import org.jetbrains.java.decompiler.modules.decompiler.sforms.DirectGraph; +import org.jetbrains.java.decompiler.modules.decompiler.sforms.DirectNode; +import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPaar; +import org.jetbrains.java.decompiler.struct.StructMethod; +import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor; +import org.jetbrains.java.decompiler.util.InterpreterUtil; + +public class NestedMemberAccess { + + private static final int METHOD_ACCESS_NORMAL = 1; + private static final int METHOD_ACCESS_FIELDGET = 2; + private static final int METHOD_ACCESS_FIELDSET = 3; + private static final int METHOD_ACCESS_METHOD = 4; + + private boolean notSetSync; + + private HashMap<MethodWrapper, Integer> mapMethodType = new HashMap<MethodWrapper, Integer>(); + + + public void propagateMemberAccess(ClassNode root) { + + if(root.nested.isEmpty()) { + return; + } + + notSetSync = DecompilerContext.getOption(IFernflowerPreferences.SYNTHETIC_NOT_SET); + + computeMethodTypes(root); + + eliminateStaticAccess(root); + } + + + private void computeMethodTypes(ClassNode node) { + + if(node.type == ClassNode.CLASS_LAMBDA) { + return; + } + + for(ClassNode nd : node.nested) { + computeMethodTypes(nd); + } + + for(MethodWrapper meth : node.wrapper.getMethods()) { + computeMethodType(node, meth); + } + + } + + private void computeMethodType(ClassNode node, MethodWrapper meth) { + + int type = METHOD_ACCESS_NORMAL; + + if(meth.root != null) { + + DirectGraph graph = meth.getOrBuildGraph(); + + int flags = meth.methodStruct.getAccessFlags(); + if(((flags & CodeConstants.ACC_SYNTHETIC) != 0 || meth.methodStruct.getAttributes().containsKey("Synthetic") || notSetSync) && + (flags & CodeConstants.ACC_STATIC) != 0) { + if(graph.nodes.size() == 2) { // incl. dummy exit node + if(graph.first.exprents.size() == 1) { + Exprent exprent = graph.first.exprents.get(0); + + MethodDescriptor mtdesc = MethodDescriptor.parseDescriptor(meth.methodStruct.getDescriptor()); + int parcount = mtdesc.params.length; + + Exprent exprCore = exprent; + + if(exprent.type == Exprent.EXPRENT_EXIT) { + ExitExprent exexpr = (ExitExprent)exprent; + if(exexpr.getExittype() == ExitExprent.EXIT_RETURN && exexpr.getValue() != null) { + exprCore = exexpr.getValue(); + } + } + + switch(exprCore.type) { + case Exprent.EXPRENT_FIELD: + FieldExprent fexpr = (FieldExprent)exprCore; + if((parcount == 1 && !fexpr.isStatic()) || + (parcount == 0 && fexpr.isStatic())) { + if(fexpr.getClassname().equals(node.classStruct.qualifiedName)) { // FIXME: check for private flag of the field + if(fexpr.isStatic() || (fexpr.getInstance().type == Exprent.EXPRENT_VAR && ((VarExprent)fexpr.getInstance()).getIndex() == 0)) { + type = METHOD_ACCESS_FIELDGET; + } + } + } + break; + case Exprent.EXPRENT_VAR: // qualified this + if(parcount == 1) { + // this or final variable + if(((VarExprent)exprCore).getIndex() != 0) { + type = METHOD_ACCESS_FIELDGET; + } + } + + break; + case Exprent.EXPRENT_INVOCATION: + type = METHOD_ACCESS_METHOD; + break; + case Exprent.EXPRENT_ASSIGNMENT: + AssignmentExprent asexpr = (AssignmentExprent)exprCore; + if(asexpr.getLeft().type == Exprent.EXPRENT_FIELD && asexpr.getRight().type == Exprent.EXPRENT_VAR) { + FieldExprent fexpras = (FieldExprent)asexpr.getLeft(); + if((parcount == 2 && !fexpras.isStatic()) || + (parcount == 1 && fexpras.isStatic())) { + if(fexpras.getClassname().equals(node.classStruct.qualifiedName)) { // FIXME: check for private flag of the field + if(fexpras.isStatic() || (fexpras.getInstance().type == Exprent.EXPRENT_VAR && ((VarExprent)fexpras.getInstance()).getIndex() == 0)) { + if(((VarExprent)asexpr.getRight()).getIndex() == parcount - 1) { + type = METHOD_ACCESS_FIELDSET; + } + } + } + } + } + } + + + if(type == METHOD_ACCESS_METHOD) { // FIXME: check for private flag of the method + + type = METHOD_ACCESS_NORMAL; + + InvocationExprent invexpr = (InvocationExprent)exprCore; + + if((invexpr.isStatic() && invexpr.getLstParameters().size() == parcount) || (!invexpr.isStatic() && invexpr.getInstance().type == Exprent.EXPRENT_VAR + && ((VarExprent)invexpr.getInstance()).getIndex() == 0 && invexpr.getLstParameters().size() == parcount-1)) { + + boolean equalpars = true; + + for(int i=0;i<invexpr.getLstParameters().size();i++) { + Exprent parexpr = invexpr.getLstParameters().get(i); + if(parexpr.type != Exprent.EXPRENT_VAR || + ((VarExprent)parexpr).getIndex() != i + (invexpr.isStatic()?0:1)) { + equalpars = false; + break; + } + } + + if(equalpars) { + type = METHOD_ACCESS_METHOD; + } + } + } + } else if(graph.first.exprents.size() == 2) { + Exprent exprentFirst = graph.first.exprents.get(0); + Exprent exprentSecond = graph.first.exprents.get(1); + + if(exprentFirst.type == Exprent.EXPRENT_ASSIGNMENT && + exprentSecond.type == Exprent.EXPRENT_EXIT) { + + MethodDescriptor mtdesc = MethodDescriptor.parseDescriptor(meth.methodStruct.getDescriptor()); + int parcount = mtdesc.params.length; + + AssignmentExprent asexpr = (AssignmentExprent)exprentFirst; + if(asexpr.getLeft().type == Exprent.EXPRENT_FIELD && asexpr.getRight().type == Exprent.EXPRENT_VAR) { + FieldExprent fexpras = (FieldExprent)asexpr.getLeft(); + if((parcount == 2 && !fexpras.isStatic()) || + (parcount == 1 && fexpras.isStatic())) { + if(fexpras.getClassname().equals(node.classStruct.qualifiedName)) { // FIXME: check for private flag of the field + if(fexpras.isStatic() || (fexpras.getInstance().type == Exprent.EXPRENT_VAR && ((VarExprent)fexpras.getInstance()).getIndex() == 0)) { + if(((VarExprent)asexpr.getRight()).getIndex() == parcount - 1) { + + ExitExprent exexpr = (ExitExprent)exprentSecond; + if(exexpr.getExittype() == ExitExprent.EXIT_RETURN && exexpr.getValue() != null) { + if(exexpr.getValue().type == Exprent.EXPRENT_VAR && + ((VarExprent)asexpr.getRight()).getIndex() == parcount - 1) { + type = METHOD_ACCESS_FIELDSET; + } + } + } + } + } + } + } + } + } + + + } + } + } + + if(type != METHOD_ACCESS_NORMAL) { + mapMethodType.put(meth, type); + } else { + mapMethodType.remove(meth); + } + } + + + + private void eliminateStaticAccess(ClassNode node) { + + if(node.type == ClassNode.CLASS_LAMBDA) { + return; + } + + for(MethodWrapper meth : node.wrapper.getMethods()) { + + if(meth.root != null) { + + boolean replaced = false; + + DirectGraph graph = meth.getOrBuildGraph(); + + HashSet<DirectNode> setVisited = new HashSet<DirectNode>(); + LinkedList<DirectNode> stack = new LinkedList<DirectNode>(); + stack.add(graph.first); + + while(!stack.isEmpty()) { // TODO: replace with interface iterator? + + DirectNode nd = stack.removeFirst(); + + if(setVisited.contains(nd)) { + continue; + } + setVisited.add(nd); + + for(int i=0;i<nd.exprents.size();i++) { + Exprent exprent = nd.exprents.get(i); + + replaced |= replaceInvocations(node, meth, exprent); + + if(exprent.type == Exprent.EXPRENT_INVOCATION) { + Exprent ret = replaceAccessExprent(node, meth, (InvocationExprent)exprent); + + if(ret != null) { + nd.exprents.set(i, ret); + replaced = true; + } + } + } + + for(DirectNode ndx: nd.succs) { + stack.add(ndx); + } + } + + if(replaced) { + computeMethodType(node, meth); + } + + } + } + + for(ClassNode child : node.nested) { + eliminateStaticAccess(child); + } + + } + + + private boolean replaceInvocations(ClassNode caller, MethodWrapper meth, Exprent exprent) { + + boolean res = false; + + for(Exprent expr : exprent.getAllExprents()) { + res |= replaceInvocations(caller, meth, expr); + } + + for(;;) { + + boolean found = false; + + for(Exprent expr : exprent.getAllExprents()) { + if(expr.type == Exprent.EXPRENT_INVOCATION) { + Exprent newexpr = replaceAccessExprent(caller, meth, (InvocationExprent)expr); + if(newexpr != null) { + exprent.replaceExprent(expr, newexpr); + found = true; + res = true; + break; + } + } + } + + if(!found) { + break; + } + } + + return res; + } + + private boolean sameTree(ClassNode caller, ClassNode callee) { + + if(caller.classStruct.qualifiedName.equals(callee.classStruct.qualifiedName)) { + return false; + } + + while(caller.parent != null) { + caller = caller.parent; + } + + while(callee.parent != null) { + callee = callee.parent; + } + + return caller == callee; + } + + private Exprent replaceAccessExprent(ClassNode caller, MethodWrapper methdest, InvocationExprent invexpr) { + + ClassNode node = DecompilerContext.getClassprocessor().getMapRootClasses().get(invexpr.getClassname()); + + MethodWrapper methsource = null; + if(node != null && node.wrapper != null) { + methsource = node.wrapper.getMethodWrapper(invexpr.getName(), invexpr.getStringDescriptor()); + } + + if(methsource == null || !mapMethodType.containsKey(methsource)) { + return null; + } + + // if same method, return + if(node.classStruct.qualifiedName.equals(caller.classStruct.qualifiedName) && + methsource.methodStruct.getName().equals(methdest.methodStruct.getName()) && + methsource.methodStruct.getDescriptor().equals(methdest.methodStruct.getDescriptor())) { + // no recursive invocations permitted! + return null; + } + + int type = mapMethodType.get(methsource); + +// // FIXME: impossible case. METHOD_ACCESS_NORMAL is not saved in the map +// if(type == METHOD_ACCESS_NORMAL) { +// return null; +// } + + if(!sameTree(caller, node)) { + return null; + } + + DirectGraph graph = methsource.getOrBuildGraph(); + Exprent source = graph.first.exprents.get(0); + + Exprent retexprent = null; + + switch(type) { + case METHOD_ACCESS_FIELDGET: + ExitExprent exsource = (ExitExprent)source; + if(exsource.getValue().type == Exprent.EXPRENT_VAR) { // qualified this + VarExprent var = (VarExprent)exsource.getValue(); + String varname = methsource.varproc.getVarName(new VarVersionPaar(var)); + + if(!methdest.setOuterVarNames.contains(varname)) { + VarNamesCollector vnc = new VarNamesCollector(); + vnc.addName(varname); + + methdest.varproc.refreshVarNames(vnc); + methdest.setOuterVarNames.add(varname); + } + + int index = methdest.counter.getCounterAndIncrement(CounterContainer.VAR_COUNTER); + VarExprent ret = new VarExprent(index, var.getVartype(), methdest.varproc); + methdest.varproc.setVarName(new VarVersionPaar(index, 0), varname); + + retexprent = ret; + } else { // field + FieldExprent ret = (FieldExprent)exsource.getValue().copy(); + if(!ret.isStatic()) { + ret.replaceExprent(ret.getInstance(), invexpr.getLstParameters().get(0)); + } + retexprent = ret; + } + break; + case METHOD_ACCESS_FIELDSET: + AssignmentExprent ret; + if(source.type == Exprent.EXPRENT_EXIT) { + ExitExprent extex = (ExitExprent)source; + ret = (AssignmentExprent)((AssignmentExprent)extex.getValue()).copy(); + } else { + ret = (AssignmentExprent)((AssignmentExprent)source).copy(); + } + FieldExprent fexpr = (FieldExprent)ret.getLeft(); + + if(fexpr.isStatic()) { + ret.replaceExprent(ret.getRight(), invexpr.getLstParameters().get(0)); + } else { + ret.replaceExprent(ret.getRight(), invexpr.getLstParameters().get(1)); + fexpr.replaceExprent(fexpr.getInstance(), invexpr.getLstParameters().get(0)); + } + retexprent = ret; + break; + case METHOD_ACCESS_METHOD: + if(source.type == Exprent.EXPRENT_EXIT) { + source = ((ExitExprent)source).getValue(); + } + + InvocationExprent invret = (InvocationExprent)source.copy(); + + int index = 0; + if(!invret.isStatic()) { + invret.replaceExprent(invret.getInstance(), invexpr.getLstParameters().get(0)); + index = 1; + } + + for(int i=0;i<invret.getLstParameters().size();i++) { + invret.replaceExprent(invret.getLstParameters().get(i), invexpr.getLstParameters().get(i + index)); + } + + retexprent = invret; + } + + + if(retexprent != null) { + // hide synthetic access method + boolean hide = true; + + if(node.type == ClassNode.CLASS_ROOT || (node.access & CodeConstants.ACC_STATIC) != 0) { + StructMethod mt = methsource.methodStruct; + if((mt.getAccessFlags() & CodeConstants.ACC_SYNTHETIC) == 0 && !mt.getAttributes().containsKey("Synthetic")) { + hide = false; + } + } + if(hide) { + node.wrapper.getHideMembers().add(InterpreterUtil.makeUniqueKey(invexpr.getName(), invexpr.getStringDescriptor())); + } + } + + return retexprent; + } + + +} |