- method attribute 'default' (Java 8)

- instruction 'invokedynamic' (Java 7)
- bugfixing

src/de/fernflower/code/CodeConstants.java

@@ -16,6 +16,16 @@ package de.fernflower.code;
 
 public interface CodeConstants {
 
+	// ----------------------------------------------------------------------
+	// BYTECODE VERSIONS
+	// ----------------------------------------------------------------------
+	
+	public final static int		BYTECODE_JAVA_LE_4 = 1;
+	public final static int		BYTECODE_JAVA_5 = 2;
+	public final static int		BYTECODE_JAVA_6 = 3;
+	public final static int		BYTECODE_JAVA_7 = 4;
+	public final static int		BYTECODE_JAVA_8 = 5;
+	
 	// ----------------------------------------------------------------------
 	// VARIABLE TYPES
 	// ----------------------------------------------------------------------
@@ -339,6 +349,7 @@ public interface CodeConstants {
 	public final static int		opc_invokespecial = 183;	
 	public final static int		opc_invokestatic = 184;		
 	public final static int		opc_invokeinterface = 185;	
+	public final static int		opc_invokedynamic = 186;		
 	public final static int		opc_xxxunusedxxx = 186;		
 	public final static int		opc_new = 187;				
 	public final static int		opc_newarray = 188;			

src/de/fernflower/code/ConstantsUtil.java

@@ -30,6 +30,7 @@ import de.fernflower.code.optinstructions.GOTO_W;
 import de.fernflower.code.optinstructions.IINC;
 import de.fernflower.code.optinstructions.ILOAD;
 import de.fernflower.code.optinstructions.INSTANCEOF;
+import de.fernflower.code.optinstructions.INVOKEDYNAMIC;
 import de.fernflower.code.optinstructions.INVOKEINTERFACE;
 import de.fernflower.code.optinstructions.INVOKESPECIAL;
 import de.fernflower.code.optinstructions.INVOKESTATIC;
@@ -58,17 +59,18 @@ public class ConstantsUtil {
 		return opcodeNames[opcode];
 	}
 
-	public static Instruction getInstructionInstance(int opcode, boolean wide, int group, int[] operands) {
+	public static Instruction getInstructionInstance(int opcode, boolean wide, int group, int bytecode_version, int[] operands) {
 
-		Instruction instr = getInstructionInstance(opcode);
+		Instruction instr = getInstructionInstance(opcode, bytecode_version);
 		instr.wide = wide;
 		instr.group = group;
+		instr.bytecode_version = bytecode_version;
 		instr.setOperands(operands);
 
 		return instr;
 	}
 	
-	public static Instruction getInstructionInstance(int opcode) {
+	private static Instruction getInstructionInstance(int opcode, int bytecode_version) {
 		try {
 			Instruction instr;
 			
@@ -78,7 +80,13 @@ public class ConstantsUtil {
 					opcode == CodeConstants.opc_ifnonnull) {
 				instr = new IfInstruction();
 			} else {
+
 				Class cl = opcodeClasses[opcode];
+				
+				if(opcode == CodeConstants.opc_invokedynamic && bytecode_version < CodeConstants.BYTECODE_JAVA_7) { 
+					cl = null; // instruction unused in Java 6 and before
+				} 
+					
 				if(cl == null) {
 					instr = new Instruction();
 				} else {
@@ -282,7 +290,8 @@ public class ConstantsUtil {
 		"invokespecial",		//    "invokespecial",
 		"invokestatic",		//    "invokestatic",
 		"invokeinterface",		//    "invokeinterface",
-		"xxxunusedxxx",		//    "xxxunusedxxx",
+		//"xxxunusedxxx",		//    "xxxunusedxxx", Java 6 and before
+		"invokedynamic",		//    "invokedynamic", Java 7 and later
 		"new",				//    "new",
 		"newarray",		//    "newarray",
 		"anewarray",		//    "anewarray",
@@ -487,7 +496,7 @@ public class ConstantsUtil {
 		INVOKESPECIAL.class,		//    "invokespecial",
 		INVOKESTATIC.class,		//    "invokestatic",
 		INVOKEINTERFACE.class,		//    "invokeinterface",
-		null		,		//    "xxxunusedxxx",
+		INVOKEDYNAMIC.class,		//    "xxxunusedxxx" Java 6 and before, "invokedynamic" Java 7 and later
 		NEW.class,				//    "new",
 		NEWARRAY.class,		//    "newarray",
 		ANEWARRAY.class,		//    "anewarray",

src/de/fernflower/code/Instruction.java

@@ -29,6 +29,7 @@ public class Instruction implements CodeConstants {
 	
 	public boolean wide = false;
 	
+	public int bytecode_version = BYTECODE_JAVA_LE_4;
 	
 	// *****************************************************************************
 	// private fields
@@ -55,7 +56,7 @@ public class Instruction implements CodeConstants {
 	}
 	
 	public Instruction clone() {
-		return ConstantsUtil.getInstructionInstance(opcode, wide, group, operands==null?null:(int[])operands.clone());
+		return ConstantsUtil.getInstructionInstance(opcode, wide, group, bytecode_version, operands==null?null:(int[])operands.clone());
 	}
 	
 	public String toString() {

src/de/fernflower/code/interpreter/InstructionImpact.java

@@ -413,6 +413,8 @@ public class InstructionImpact {
 			case CodeConstants.opc_invokeinterface:
 				stack.pop();
 			case CodeConstants.opc_invokestatic:
+			case CodeConstants.opc_invokedynamic:
+				if(instr.opcode != CodeConstants.opc_invokedynamic || instr.bytecode_version >= CodeConstants.BYTECODE_JAVA_7) {
 					ck = pool.getLinkConstant(instr.getOperand(0));
 					MethodDescriptor md = MethodDescriptor.parseDescriptor(ck.descriptor);
 					for(int i=0;i<md.params.length;i++) {
@@ -424,6 +426,7 @@ public class InstructionImpact {
 							stack.push(new VarType(CodeConstants.TYPE_GROUP2EMPTY));
 						}
 					}
+				}
 				break;
 			case CodeConstants.opc_new:
 				cn = pool.getPrimitiveConstant(instr.getOperand(0));

src/de/fernflower/code/optinstructions/INVOKEDYNAMIC.java

@@ -0,0 +1,20 @@
+package de.fernflower.code.optinstructions;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+import de.fernflower.code.Instruction;
+
+public class INVOKEDYNAMIC extends Instruction {
+
+	public void writeToStream(DataOutputStream out, int offset) throws IOException {
+		out.writeByte(opc_invokedynamic);
+		out.writeShort(getOperand(0));
+		out.writeByte(0);
+		out.writeByte(0);
+	}
+	
+	public int length() {
+		return 5;
+	}
+}

src/de/fernflower/main/ClassReference14Processor.java

@@ -95,16 +95,19 @@ public class ClassReference14Processor {
 		
 		ClassWrapper wrapper = node.wrapper;
 		
-		int major_version = wrapper.getClassStruct().major_version;
-		int minor_version = wrapper.getClassStruct().minor_version;
-		
-		if(major_version > 48 || (major_version == 48 && minor_version > 0)) {
+//		int major_version = wrapper.getClassStruct().major_version;
+//		int minor_version = wrapper.getClassStruct().minor_version;
+//		
+//		if(major_version > 48 || (major_version == 48 && minor_version > 0)) {
+//			// version 1.5 or above
+//			return;
+//		}
+
+		if(wrapper.getClassStruct().isVersionGE_1_5()) {
 			// version 1.5 or above
 			return;
 		}
 		
-		
-		
 		// find the synthetic method Class class$(String) if present
 		HashMap<ClassWrapper, MethodWrapper> mapClassMeths = new HashMap<ClassWrapper, MethodWrapper>(); 
 		findClassMethod(node, mapClassMeths);

src/de/fernflower/main/ClassWriter.java

@@ -587,6 +587,11 @@ public class ClassWriter {
 			}
 		}
 		
+		// 'default' modifier (Java 8)
+		if(isInterface && mt.containsCode()) {
+			bufstrwriter.write("default ");
+		}
+
 		GenericMethodDescriptor descriptor = null;
 		if(DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_GENERIC_SIGNATURES)) {
 			StructGenericSignatureAttribute attr = (StructGenericSignatureAttribute)mt.getAttributes().getWithKey("Signature");

src/de/fernflower/main/rels/MethodProcessorThread.java

@@ -142,7 +142,7 @@ public class MethodProcessorThread implements Runnable {
 		DecompilerContext.getCountercontainer().setCounter(CounterContainer.VAR_COUNTER, mt.getLocalVariables());
 		
 		//DotExporter.toDotFile(graph, new File("c:\\Temp\\fern3.dot"), true);
-		System.out.println(graph.toString());
+		//System.out.println(graph.toString());
 		
 		if(ExceptionDeobfuscator.hasObfuscatedExceptions(graph)) {
 			DecompilerContext.getLogger().writeMessage("Heavily obfuscated exception ranges found!", IFernflowerLogger.WARNING);
@@ -157,7 +157,7 @@ public class MethodProcessorThread implements Runnable {
 				//DotExporter.toDotFile(graph, new File("c:\\Temp\\fern2.dot"), true);
 				//System.out.println(graph.toString());
 
-				System.out.println("~~~~~~~~~~~~~~~~~~~~~~ \r\n"+root.toJava());
+				//System.out.println("~~~~~~~~~~~~~~~~~~~~~~ \r\n"+root.toJava());
 				
 				root = DomHelper.parseGraph(graph);
 			}

src/de/fernflower/modules/decompiler/ExprProcessor.java

@@ -527,12 +527,15 @@ public class ExprProcessor implements CodeConstants {
 			case opc_invokespecial:
 			case opc_invokestatic:
 			case opc_invokeinterface:
+			case opc_invokedynamic:
+				if(instr.opcode != opc_invokedynamic || instr.bytecode_version >= CodeConstants.BYTECODE_JAVA_7) {
 					InvocationExprent exprinv = new InvocationExprent(instr.opcode, pool.getLinkConstant(instr.getOperand(0)), stack);
 					if (exprinv.getDescriptor().ret.type == CodeConstants.TYPE_VOID) {
 						exprlist.add(exprinv);
 					} else {
 						pushEx(stack, exprlist, exprinv);
 					}
+				}
 				break;
 			case opc_new:
 			case opc_anewarray:

src/de/fernflower/modules/decompiler/FinallyProcessor.java

@@ -14,16 +14,13 @@
 
 package de.fernflower.modules.decompiler;
 
-import java.io.File;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map.Entry;
 
-import test.util.DotExporter;
 import de.fernflower.code.CodeConstants;
 import de.fernflower.code.ConstantsUtil;
 import de.fernflower.code.Instruction;
@@ -73,6 +70,8 @@ public class FinallyProcessor {
 	
 	private boolean processStatementEx(StructMethod mt, RootStatement root, ControlFlowGraph graph) {
 		
+		int bytecode_version = mt.getClassStruct().getBytecodeVersion();
+		
 		LinkedList<Statement> stack = new LinkedList<Statement>();
 		stack.add(root);
 		
@@ -110,7 +109,7 @@ public class FinallyProcessor {
 						} else {
 							
 							int varindex = DecompilerContext.getCountercontainer().getCounterAndIncrement(CounterContainer.VAR_COUNTER);
-							insertSemaphore(graph, getAllBasicBlocks(fin.getFirst()), head, handler, varindex, inf);
+							insertSemaphore(graph, getAllBasicBlocks(fin.getFirst()), head, handler, varindex, inf, bytecode_version);
 							
 							finallyBlockIDs.put(handler.id, varindex);
 						}
@@ -360,7 +359,7 @@ public class FinallyProcessor {
 		return new Object[] {firstcode, mapLast};
 	}
 	
-	private void insertSemaphore(ControlFlowGraph graph, HashSet<BasicBlock> setTry, BasicBlock head, BasicBlock handler, int var, Object[] information) {
+	private void insertSemaphore(ControlFlowGraph graph, HashSet<BasicBlock> setTry, BasicBlock head, BasicBlock handler, int var, Object[] information, int bytecode_version) {
 		
 		HashSet<BasicBlock> setCopy = new HashSet<BasicBlock>(setTry);
 		
@@ -389,8 +388,8 @@ public class FinallyProcessor {
 					// disable semaphore
 					SimpleInstructionSequence seq = new SimpleInstructionSequence();
 
-					seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_bipush, false, CodeConstants.GROUP_GENERAL, new int[]{0}) , -1);
-					seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_istore, false, CodeConstants.GROUP_GENERAL, new int[]{var}) , -1);
+					seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_bipush, false, CodeConstants.GROUP_GENERAL, bytecode_version, new int[]{0}) , -1);
+					seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_istore, false, CodeConstants.GROUP_GENERAL, bytecode_version, new int[]{var}) , -1);
 
 					// build a separate block
 					BasicBlock newblock = new BasicBlock(++graph.last_id);
@@ -419,8 +418,8 @@ public class FinallyProcessor {
 		
 		// enable semaphor at the statement entrance
 		SimpleInstructionSequence seq = new SimpleInstructionSequence();
-		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_bipush, false, CodeConstants.GROUP_GENERAL, new int[]{1}) , -1);
-		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_istore, false, CodeConstants.GROUP_GENERAL, new int[]{var}) , -1);
+		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_bipush, false, CodeConstants.GROUP_GENERAL, bytecode_version, new int[]{1}) , -1);
+		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_istore, false, CodeConstants.GROUP_GENERAL, bytecode_version, new int[]{var}) , -1);
 		
 		BasicBlock newhead = new BasicBlock(++graph.last_id);
 		newhead.setSeq(seq);
@@ -429,8 +428,8 @@ public class FinallyProcessor {
 		
 		// initialize semaphor with false
 		seq = new SimpleInstructionSequence();
-		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_bipush, false, CodeConstants.GROUP_GENERAL, new int[]{0}) , -1);
-		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_istore, false, CodeConstants.GROUP_GENERAL, new int[]{var}) , -1);
+		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_bipush, false, CodeConstants.GROUP_GENERAL, bytecode_version, new int[]{0}) , -1);
+		seq.addInstruction(ConstantsUtil.getInstructionInstance(CodeConstants.opc_istore, false, CodeConstants.GROUP_GENERAL, bytecode_version, new int[]{var}) , -1);
 		
 		BasicBlock newheadinit = new BasicBlock(++graph.last_id);
 		newheadinit.setSeq(seq);
@@ -566,9 +565,9 @@ public class FinallyProcessor {
 			lstAreas.add(new Object[] {start, arr[0], arr[1]});
 		}
 
-		try {
-			DotExporter.toDotFile(graph, new File("c:\\Temp\\fern5.dot"), true);
-		} catch(Exception ex){ex.printStackTrace();} 
+//		try {
+//			DotExporter.toDotFile(graph, new File("c:\\Temp\\fern5.dot"), true);
+//		} catch(Exception ex){ex.printStackTrace();} 
 		
 		// delete areas
 		for(Object[] area: lstAreas) {
@@ -941,6 +940,10 @@ public class FinallyProcessor {
 		// remove all the blocks inbetween 
 		for(BasicBlock block: setBlocks) {
 
+			// artificial basic blocks (those resulted from splitting)
+			// can belong to more than one area
+			if(graph.getBlocks().containsKey(block.id)) {
+			
 				if(!block.getSuccExceptions().containsAll(setCommonExceptionHandlers)) {
 					is_outside_range = true;
 				}
@@ -956,10 +959,6 @@ public class FinallyProcessor {
 					setCommonRemovedExceptionRanges.retainAll(setRemovedExceptionRanges);
 				}
 			
-			// artificial basic blocks (those resulted from splitting)
-			// can belong to more than one area
-			if(graph.getBlocks().containsKey(block.id)) {
-			
 				// shift extern edges on splitted blocks
 				if(block.getSeq().isEmpty() && block.getSuccs().size() == 1) {
 					BasicBlock succs = block.getSuccs().get(0);

src/de/fernflower/modules/decompiler/exps/InvocationExprent.java

@@ -43,6 +43,7 @@ public class InvocationExprent extends Exprent {
 	public static final int INVOKE_VIRTUAL = 2;
 	public static final int INVOKE_STATIC = 3;
 	public static final int INVOKE_INTERFACE = 4;
+	public static final int INVOKE_DYNAMIC = 5;
 	
 	public static final int TYP_GENERAL = 1;
 	public static final int TYP_INIT = 2;
@@ -93,6 +94,10 @@ public class InvocationExprent extends Exprent {
 			break;
 		case CodeConstants.opc_invokeinterface:
 			invocationTyp = INVOKE_INTERFACE;
+			break;
+		case CodeConstants.opc_invokedynamic:
+			invocationTyp = INVOKE_DYNAMIC;
+			classname = "java/lang/Class"; // dummy class name
 		}
 		
 		if("<init>".equals(name)) {
@@ -108,7 +113,7 @@ public class InvocationExprent extends Exprent {
 			lstParameters.add(0, stack.pop());
 		}
 		
-		if(opcode == CodeConstants.opc_invokestatic) {
+		if(opcode == CodeConstants.opc_invokestatic || opcode == CodeConstants.opc_invokedynamic) {
 			isStatic = true;
 		} else {
 			instance = stack.pop(); 
@@ -174,10 +179,12 @@ public class InvocationExprent extends Exprent {
 		boolean isInstanceThis = false;
 		
 		if(isStatic) {
+			if(invocationTyp != INVOKE_DYNAMIC) {
 				ClassNode node = (ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASSNODE);
 				if(node == null || !classname.equals(node.classStruct.qualifiedName)) {
 					buf.append(DecompilerContext.getImpcollector().getShortName(ExprProcessor.buildJavaClassName(classname)));
 				}
+			}
 		} else {
 
 			if(instance != null && instance.type == Exprent.EXPRENT_VAR) {
@@ -249,7 +256,12 @@ public class InvocationExprent extends Exprent {
 				buf.append(".");
 			}
 			
-			buf.append(name+"(");
+			buf.append(name);
+			if(invocationTyp == INVOKE_DYNAMIC) {
+				buf.append("<invokedynamic>");
+			}
+			buf.append("(");
+
 			break;
 		case TYP_CLINIT:
 			throw new RuntimeException("Explicite invocation of <clinit>");

src/de/fernflower/modules/decompiler/sforms/FlattenStatementsHelper.java

@@ -408,17 +408,19 @@ public class FlattenStatementsHelper {
 		
 		if(finallyShortRangeSource != null) {
 			
+			boolean isContinueEdge = (edgetype == StatEdge.TYPE_CONTINUE);
+			
 			List<String[]> lst = mapShortRangeFinallyPathIds.get(sourcenode.id);
 			if(lst == null) {
 				mapShortRangeFinallyPathIds.put(sourcenode.id, lst = new ArrayList<String[]>());
 			}
-			lst.add(new String[]{finallyShortRangeSource.id, destination.id.toString(), finallyShortRangeEntry.id.toString(), isFinallyMonitorExceptionPath?"1":null});
+			lst.add(new String[]{finallyShortRangeSource.id, destination.id.toString(), finallyShortRangeEntry.id.toString(), isFinallyMonitorExceptionPath?"1":null, isContinueEdge?"1":null});
 			
 			lst = mapLongRangeFinallyPathIds.get(sourcenode.id);
 			if(lst == null) {
 				mapLongRangeFinallyPathIds.put(sourcenode.id, lst = new ArrayList<String[]>());
 			}
-			lst.add(new String[]{finallyLongRangeSource.id, destination.id.toString(), finallyLongRangeEntry.id.toString()});
+			lst.add(new String[]{finallyLongRangeSource.id, destination.id.toString(), finallyLongRangeEntry.id.toString(), isContinueEdge?"1":null});
 		}
 		
 	}
@@ -454,7 +456,10 @@ public class FlattenStatementsHelper {
 				
 				List<String[]> lst = ent.getValue();
 				for(String[] arr : lst) {
-					DirectNode dest = graph.nodes.getWithKey(mapDestinationNodes.get(Integer.parseInt(arr[1]))[0]);
+					
+					boolean isContinueEdge = arr[i==0?4:3] != null;
+					
+					DirectNode dest = graph.nodes.getWithKey(mapDestinationNodes.get(Integer.parseInt(arr[1]))[isContinueEdge?1:0]);
 					DirectNode enter = graph.nodes.getWithKey(mapDestinationNodes.get(Integer.parseInt(arr[2]))[0]);
 					
 					newLst.add(new FinallyPathWrapper(arr[0], dest.id, enter.id));
@@ -505,6 +510,10 @@ public class FlattenStatementsHelper {
 		public int hashCode() {
 			return (source+":"+destination+":"+entry).hashCode();
 		}
+		
+		public String toString() {
+			return source + "->(" + entry + ")->" + destination; 
+		}
 	}
 	
 	

src/de/fernflower/modules/decompiler/sforms/SSAConstructorSparseEx.java

@@ -14,12 +14,14 @@
 
 package de.fernflower.modules.decompiler.sforms;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map.Entry;
 
+import test.util.DotExporter;
 import de.fernflower.code.CodeConstants;
 import de.fernflower.modules.decompiler.exps.AssignmentExprent;
 import de.fernflower.modules.decompiler.exps.Exprent;
@@ -34,9 +36,9 @@ import de.fernflower.modules.decompiler.vars.VarVersionPaar;
 import de.fernflower.struct.StructMethod;
 import de.fernflower.struct.gen.MethodDescriptor;
 import de.fernflower.util.FastSparseSetFactory;
+import de.fernflower.util.FastSparseSetFactory.FastSparseSet;
 import de.fernflower.util.InterpreterUtil;
 import de.fernflower.util.SFormsFastMapDirect;
-import de.fernflower.util.FastSparseSetFactory.FastSparseSet;
 
 public class SSAConstructorSparseEx {
 
@@ -99,6 +101,16 @@ public class SSAConstructorSparseEx {
 
 		for(DirectNode node : dgraph.nodes) {
 
+//			if (node.id.endsWith("_inc")) {
+//				System.out.println();
+//
+//				try {
+//					DotExporter.toDotFile(dgraph, new File("c:\\Temp\\gr1_my.dot"));
+//				} catch (Exception ex) {
+//					ex.printStackTrace();
+//				}
+//			}
+
 			updated.remove(node.id);
 			mergeInVarMaps(node, dgraph);
 
@@ -140,7 +152,6 @@ public class SSAConstructorSparseEx {
 			return;
 		}
 
-		
 		VarExprent varassign = null;
 		boolean finished = false;
 
@@ -212,7 +223,6 @@ public class SSAConstructorSparseEx {
 			return;
 		}
 
-		
 		List<Exprent> lst = expr.getAllExprents();
 		lst.remove(varassign);
 
@@ -220,7 +230,6 @@ public class SSAConstructorSparseEx {
 			processExprent(ex, varmaparr);
 		}
 
-		
 		SFormsFastMapDirect varmap = varmaparr[0];
 
 		if (varassign != null) {
@@ -309,8 +318,7 @@ public class SSAConstructorSparseEx {
 		inVarVersions.put(node.id, mapNew);
 	}
 
-	private SFormsFastMapDirect getFilteredOutMap(String nodeid, String predid, DirectGraph dgraph, 
-									String destid) {
+	private SFormsFastMapDirect getFilteredOutMap(String nodeid, String predid, DirectGraph dgraph, String destid) {
 
 		SFormsFastMapDirect mapNew = new SFormsFastMapDirect();
 
@@ -396,7 +404,6 @@ public class SSAConstructorSparseEx {
 		return mapNew;
 	}
 
-	
 	private SFormsFastMapDirect mergeMaps(SFormsFastMapDirect mapTo, SFormsFastMapDirect map2) {
 
 		if (map2 != null && !map2.isEmpty()) {
@@ -427,7 +434,6 @@ public class SSAConstructorSparseEx {
 		return true;
 	}
 
-	
 	private void setCurrentVar(SFormsFastMapDirect varmap, Integer var, Integer vers) {
 		FastSparseSet<Integer> set = factory.spawnEmptySet();
 		set.add(vers);

src/de/fernflower/modules/decompiler/sforms/SSAUConstructorSparseEx.java

@@ -146,6 +146,7 @@ public class SSAUConstructorSparseEx {
 										|| (outNegVarVersions.containsKey(node.id) && !mapsEqual(varmaparr[1], outNegVarVersions.get(node.id)));
 			
 			if(this_updated) {
+				
 				outVarVersions.put(node.id, varmaparr[0]);
 				if(dgraph.mapNegIfBranch.containsKey(node.id)) {
 					outNegVarVersions.put(node.id, varmaparr[1]);
@@ -246,45 +247,45 @@ public class SSAUConstructorSparseEx {
 		
 		SFormsFastMapDirect varmap = varmaparr[0];
 		
-		// field access
-		if(expr.type == Exprent.EXPRENT_FIELD) {
-			
-			int index;
-			if(mapFieldVars.containsKey(expr.id)) {
-				index = mapFieldVars.get(expr.id);
-			} else {
-				index = fieldvarcounter--;
-				mapFieldVars.put(expr.id, index);
-
-				// ssu graph
-				ssuversions.createNode(new VarVersionPaar(index, 1));
-			}
-			
-			setCurrentVar(varmap, index, 1);
-			
-		} else if(expr.type == Exprent.EXPRENT_INVOCATION || 
-				(expr.type == Exprent.EXPRENT_ASSIGNMENT && ((AssignmentExprent)expr).getLeft().type == Exprent.EXPRENT_FIELD) || 
-				(expr.type == Exprent.EXPRENT_NEW && ((NewExprent)expr).getNewtype().type == CodeConstants.TYPE_OBJECT) ||
-				expr.type == Exprent.EXPRENT_FUNCTION) {
-			
-			boolean ismmpp = true;
-			
-			if(expr.type == Exprent.EXPRENT_FUNCTION) {
-				
-				ismmpp = false;
-				
-				FunctionExprent fexpr = (FunctionExprent)expr;
-				if(fexpr.getFunctype() >= FunctionExprent.FUNCTION_IMM && fexpr.getFunctype() <= FunctionExprent.FUNCTION_PPI) {
-					if(fexpr.getLstOperands().get(0).type == Exprent.EXPRENT_FIELD) {
-						ismmpp = true;
-					}
-				}
-			}
-			
-			if(ismmpp) {
-				varmap.removeAllFields();
-			}
-		}
+//		// field access
+//		if(expr.type == Exprent.EXPRENT_FIELD) {
+//			
+//			int index;
+//			if(mapFieldVars.containsKey(expr.id)) {
+//				index = mapFieldVars.get(expr.id);
+//			} else {
+//				index = fieldvarcounter--;
+//				mapFieldVars.put(expr.id, index);
+//
+//				// ssu graph
+//				ssuversions.createNode(new VarVersionPaar(index, 1));
+//			}
+//			
+//			setCurrentVar(varmap, index, 1);
+//			
+//		} else if(expr.type == Exprent.EXPRENT_INVOCATION || 
+//				(expr.type == Exprent.EXPRENT_ASSIGNMENT && ((AssignmentExprent)expr).getLeft().type == Exprent.EXPRENT_FIELD) || 
+//				(expr.type == Exprent.EXPRENT_NEW && ((NewExprent)expr).getNewtype().type == CodeConstants.TYPE_OBJECT) ||
+//				expr.type == Exprent.EXPRENT_FUNCTION) {
+//			
+//			boolean ismmpp = true;
+//			
+//			if(expr.type == Exprent.EXPRENT_FUNCTION) {
+//				
+//				ismmpp = false;
+//				
+//				FunctionExprent fexpr = (FunctionExprent)expr;
+//				if(fexpr.getFunctype() >= FunctionExprent.FUNCTION_IMM && fexpr.getFunctype() <= FunctionExprent.FUNCTION_PPI) {
+//					if(fexpr.getLstOperands().get(0).type == Exprent.EXPRENT_FIELD) {
+//						ismmpp = true;
+//					}
+//				}
+//			}
+//			
+//			if(ismmpp) {
+//				varmap.removeAllFields();
+//			}
+//		}
 		
 		
 		if(varassign != null) {

src/de/fernflower/struct/StructClass.java

@@ -22,6 +22,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 
+import de.fernflower.code.CodeConstants;
 import de.fernflower.struct.attr.StructGeneralAttribute;
 import de.fernflower.struct.consts.ConstantPool;
 import de.fernflower.struct.consts.PrimitiveConstant;
@@ -318,4 +319,26 @@ public class StructClass {
 		return loader;
 	}
 
+	public boolean isVersionGE_1_5() {
+		return (major_version > 48 || (major_version == 48 && minor_version > 0)); // FIXME: check second condition
+	}
+
+	public boolean isVersionGE_1_7() {
+		return (major_version >= 51);
+	}
+	
+	public int getBytecodeVersion() {
+		switch(major_version) {
+		case 52:
+			return CodeConstants.BYTECODE_JAVA_8;
+		case 51:
+			return CodeConstants.BYTECODE_JAVA_7;
+		case 50:
+			return CodeConstants.BYTECODE_JAVA_6;
+		case 49:
+			return CodeConstants.BYTECODE_JAVA_5;
+		}
+		
+		return CodeConstants.BYTECODE_JAVA_LE_4;
+	}
 }

src/de/fernflower/struct/StructMethod.java

@@ -280,6 +280,8 @@ public class StructMethod implements CodeConstants {
 		
 		VBStyleCollection<Instruction, Integer> collinstr = new VBStyleCollection<Instruction, Integer>();
 		
+		int bytecode_version = classStruct.getBytecodeVersion();
+		
 		for(int i=0;i<length;) {
 			
 			int offset = i;
@@ -362,6 +364,14 @@ public class StructMethod implements CodeConstants {
 						group = GROUP_INVOCATION;
 					}
 					break;
+				case opc_invokedynamic:
+					if(classStruct.isVersionGE_1_7()) { // instruction unused in Java 6 and before
+						operands.add(new Integer(in.readUnsignedShort()));
+						in.skip(2);
+						group = GROUP_INVOCATION;
+						i+=4;
+					}
+					break;
 				case opc_iload:
 				case opc_lload:
 				case opc_fload:
@@ -466,7 +476,7 @@ public class StructMethod implements CodeConstants {
 				ops[j] = ((Integer)operands.get(j)).intValue();  
 			}
 			
-			Instruction instr = ConstantsUtil.getInstructionInstance(opcode, wide, group, ops);
+			Instruction instr = ConstantsUtil.getInstructionInstance(opcode, wide, group, bytecode_version, ops);
 			
 			collinstr.addWithKey(instr, new Integer(offset));
 			
@@ -542,6 +552,9 @@ public class StructMethod implements CodeConstants {
 		return classStruct;
 	}
 
+	public boolean containsCode() {
+		return containsCode;
+	}
 }