Fixed Bugs 159, 162 and 163

src/main/java/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java

@@ -248,6 +248,10 @@ public class BytecodeGenMethod implements StatementVisitor {
 		} else {
 			assign.rightSide.accept(this);
 		}
+		
+		statement = new AssignStmt(assign.rightSide);
+		isBinaryExp = statement.isExprBinary();
+		
 		if (isBinaryExp) {
 			BinaryExpr binary = (BinaryExpr) assign.rightSide;
 			String binaryType = getResolvedType(binary.getType());
@@ -291,6 +295,11 @@ public class BytecodeGenMethod implements StatementVisitor {
 		
 		binary.lexpr.accept(this);
 		
+		if(lexpType.equals(Type.getInternalName(String.class))) {
+			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(StringBuilder.class), "append",
+					"(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
+		}
+
 		if (!lexpType.equals(rexpType) && !lexpType.equals(largerType))
 			doCast(lexpType, largerType);
 		
@@ -298,7 +307,10 @@ public class BytecodeGenMethod implements StatementVisitor {
 			needDUP = true;
 		
 		binary.rexpr.accept(this);
-		
+		if(rexpType.equals(Type.getInternalName(String.class))) {
+			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(StringBuilder.class), "append",
+					"(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
+		}
 		isParentBinary = false;
 		
 		if (!lexpType.equals(rexpType) && !rexpType.equals(largerType))
@@ -383,7 +395,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 				mv.visitInsn(Opcodes.I2F);
 			}
 			break;
-		// braucht man eigentlic nicht, muss getestet werden
+		// braucht man eigentlich nicht, muss getestet werden
 		case "java/lang/String":
 			if (sourceType.equals(Type.getInternalName(Double.class))) {
 				mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(String.class), "valueOf",
@@ -566,6 +578,10 @@ public class BytecodeGenMethod implements StatementVisitor {
 		case "java/lang/Float":
 			mv.visitInsn(Opcodes.FADD);
 			break;
+		case "java/lang/String":
+			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;",
+					false);
+			break;
 		default:
 			break;
 		}
@@ -905,14 +921,15 @@ public class BytecodeGenMethod implements StatementVisitor {
 					mDesc, isInterface);
 		}
 		
-		// TODO: if called method is apply (from FI) then generate BC-instruction "CHECKCAST"
 		
 		if(methodRefl != null && !methodRefl.getReturnType().isPrimitive()) {
 			if(methodRefl.getReturnType().equals(Object.class)) {
 				helper.createCheckCast(methodCall,mv);
 			}
-			if(isBinaryExp)
+			if(isBinaryExp) {
 				doUnboxing(getResolvedType(methodCall.getType()));
+				
+			}
 		} else if(receiverName.contains("$$") && !methCallType.equals(Type.getInternalName(Object.class))) {
 			helper.createCheckCast(methodCall,mv);
 		}
@@ -1229,11 +1246,11 @@ public class BytecodeGenMethod implements StatementVisitor {
 	// Unboxing: RefType -> prim
 	public void doUnboxing(String type) {
 		switch (type) {
-		case "java/lang/String":
+//		case "java/lang/String":
-			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(StringBuilder.class), "append",
+//			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(StringBuilder.class), "append",
-					"(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
+//					"(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
-
+//
-			break;
+//			break;
 		case "java/lang/Boolean":
 			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Boolean", "booleanValue", "()Z", false);
 			break;
@@ -1330,10 +1347,10 @@ public class BytecodeGenMethod implements StatementVisitor {
 	// Boxing: prim -> RefType
 	public void doBoxing(String type) {
 		switch (type) {
-		case "java/lang/String":
+//		case "java/lang/String":
-			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;",
+//			mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;",
-					false);
+//					false);
-			break;
+//			break;
 		case "java/lang/Boolean":
 			mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;", false);
 			break;

src/main/java/de/dhbwstuttgart/bytecode/utilities/MethodCallHelper.java

@@ -32,6 +32,7 @@ import de.dhbwstuttgart.syntaxtree.FormalParameter;
 import de.dhbwstuttgart.syntaxtree.GenericDeclarationList;
 import de.dhbwstuttgart.syntaxtree.GenericTypeVar;
 import de.dhbwstuttgart.syntaxtree.Method;
+import de.dhbwstuttgart.syntaxtree.ParameterList;
 import de.dhbwstuttgart.syntaxtree.SourceFile;
 import de.dhbwstuttgart.syntaxtree.statement.Expression;
 import de.dhbwstuttgart.syntaxtree.statement.LambdaExpression;
@@ -98,11 +99,15 @@ public class MethodCallHelper {
 	public String getDesc(String className) throws NotInCurrentPackageException, NotFoundException {
 		String name = methCall.name;
 		ClassOrInterface clazz = getClassFromCurrPkg(className);
+		String retType = getResolvedType(methCall.getType());
+		ArrayList<String> params = getTypes(methCall.arglist.getArguments());
 		
 		Map<String, String> genAndBoundsClass = getGenericsAndBounds(clazz.getGenerics());
 		modifyGenAndBounds(genAndBoundsClass);
 		for (Method m : clazz.getMethods()) {
-			if (name.equals(m.getName())) {
+			if (name.equals(m.getName()) && retType.equals(getResolvedType(m.getReturnType()))) {
+				ArrayList<String> paramsOfM = getTypes(m.getParameterList());
+				if(areEquals(params,paramsOfM)) {
 					Map<String, String> genAndBoundsMethod = getGenericsAndBoundsMethod(m.getGenerics());
 					modifyGenAndBounds(genAndBoundsMethod);
 					boolean hasGen = hasGen(m, genAndBoundsClass);
@@ -111,10 +116,45 @@ public class MethodCallHelper {
 					return nm.accept(new DescriptorToString(resultSet));
 				}
 			}
+		}
 
 		throw new NotFoundException("Method " + name + " is not found");
 	}
 
+	private boolean areEquals(ArrayList<String> params, ArrayList<String> paramsOfM) {
+		if(params.size() != paramsOfM.size())
+			return false;
+		
+		for(String t : params) {
+			for(String t2 : paramsOfM) {
+				if(!t.equals(t2))
+					return false;
+			}
+		}
+		return true;
+	}
+
+	private ArrayList<String> getTypes(ParameterList parameterList) {
+		Iterator<FormalParameter> itr = parameterList.iterator();
+		ArrayList<String> typeList = new ArrayList<>();
+		while (itr.hasNext()) {
+			FormalParameter fp = itr.next();
+			String t = getResolvedType(fp.getType());
+			typeList.add(t);
+		}
+		
+		return typeList;
+	}
+
+	private ArrayList<String> getTypes(List<Expression> arguments) {
+		ArrayList<String> types = new ArrayList<>();
+		for(int i = 0; i<arguments.size(); ++i) {
+			String t = getResolvedType(arguments.get(i).getType());
+			types.add(t);
+		}
+		return types;
+	}
+
 	private boolean hasGen(Method m, Map<String, String> genericsAndBounds) {
 		String retType = resultSet.resolveType(m.getReturnType()).resolvedType.acceptTV(new TypeToSignature());
 		/*Prüfe, ob die Rückgabe-Type der Methode eine Type-Variable ist*/

src/test/resources/bytecode/javFiles/Id.jav

@@ -1,7 +1,11 @@
 public class Id {
 	
-	id(b){
+//	id(b){
-		return b;
+//		return b;
-	}
+//	}
+	id2 = x -> x;
+
+	id3 (x) {
+	   	return id2.apply(x)
 }
 

src/test/resources/bytecode/javFiles/OL.jav

@@ -2,22 +2,23 @@ import java.lang.String;
 import java.lang.Integer;
 import java.lang.Double; 
 import java.lang.Boolean;
+import java.util.Vector;
 
 
 public class OL     {
 
      m(x) { return x + x; }
- /*    
+     
      m(Boolean x) { return x; } 
      
-    
+// if the class contains just this method, then correct BC will be generated.
-	m(x) {
+// But if another methods are contained then the generated BC is not correct
-		x.add(1);
+/*	m(x) {
+		//x.add(1);
 		x.addAll(x);
 		return x;
 	}
 */	
-	
 }
 
 public class OLMain   {