Added other implementation for methodCallStatement

src/main/java/abstractSyntaxTree/Statement/LocalVarDecl.java

@@ -43,9 +43,10 @@ public class LocalVarDecl extends AbstractType implements IStatement{
     public void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext) throws Exception {
         localVars.put(identifier, type);
 
-        // Set a default value for the variable --> less problems
+
         int index = localVars.size()-1;
 
+        // Set a default value for the variable --> less problems
         switch (type){
             case "int":
                 mv.visitInsn(Opcodes.ICONST_0);

src/main/java/abstractSyntaxTree/StatementExpression/MethodCallStatementExpression.java

@@ -65,41 +65,45 @@ public class MethodCallStatementExpression extends AbstractType implements IExpr
     @Override
     public void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext) throws Exception {
         //Generate Bytecode for the receiver
-        if (classThatHasTheMethodIfNotThis != null) {
-            //TODO: classThatHasTheMethodIfNotThis must be an object --> instance of the class not the class itself
-            // This is not finished
-            // Need to call codeGen so it pushes the instance onto the stack, which will be popped of
-            //classThatHasTheMethodIfNotThis.codeGen();
-
-            String descriptor;
-            List<MethodDecl> methodDecls = thisClass.methodDecls;
-            for (MethodDecl methodDecl : methodDecls) {
-                if (methodDecl.name.equals(methodName)) {
-                    //Get the method descriptor
-                   // descriptor = methodDecl.getMethodDescriptor(methodContext);
-                }
-            }
-        //    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, classThatHasTheMethodIfNotThis.name, methodName, descriptor, false);
-
-        } else {
-            // Load this onto the stack
+        if (receiver.thisExpression) {
+            // If the receiver is "this" then load "this" onto the stack
             mv.visitVarInsn(Opcodes.ALOAD, 0);
+        } else if (receiver.instVarExpression != null) {
+            receiver.instVarExpression.codeGen(mv, localVars, typeContext);
 
-            for (IExpression argument : arguments) {
-                argument.codeGen(mv, localVars, typeContext);
-            }
+        } else if (receiver.newStatementExpression != null) {
+            receiver.newStatementExpression.codeGen(mv, localVars, typeContext);
 
-            // Get the method descriptor
-            String descriptor;
-            List<MethodDecl> methodDecls = thisClass.methodDecls;
-            for (MethodDecl methodDecl : methodDecls) {
-                if (methodDecl.name.equals(methodName)) {
-                    //Get the method descriptor
-                    //descriptor = methodDecl.getMethodDescriptor(methodContext);
+            // Not sure about this part
+        } else if (receiver.identifier != null) {
+            // Load local variable onto the stack
+            for (String key : localVars.keySet()) {
+                if (key.equals(receiver.identifier)) {
+                    String type = localVars.get(key);
+                    int opcode = type.equals("int") ? Opcodes.ILOAD : Opcodes.ALOAD;
+                    mv.visitVarInsn(opcode, Integer.parseInt(key));
+                    break;
                 }
             }
-       //     mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, thisClass.name, methodName, descriptor, false);
         }
+
+        // Generate Bytecode for the arguments
+        for (IExpression argument : arguments) {
+            argument.codeGen(mv, localVars, typeContext);
+        }
+
+
+        String descriptor;
+        List<MethodDecl> methodDecls = thisClass.methodDecls;
+        for (MethodDecl methodDecl : methodDecls) {
+            if (methodDecl.name.equals(methodName)) {
+                //Get the method descriptor
+                //descriptor = methodDecl.getMethodDescriptor(methodContext); //methodContext is missing
+            }
+        }
+        // Invoke the method
+        String className = classThatHasTheMethodIfNotThis != null ? classThatHasTheMethodIfNotThis.name : thisClass.name;
+        //mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, className, methodName, descriptor, false);
     }
 
     @Override

src/main/java/abstractSyntaxTree/StatementExpression/NewStatementExpression.java

@@ -53,6 +53,9 @@ public class NewStatementExpression extends AbstractType implements IExpression,
 
         //Call the constructor
         mv.visitMethodInsn(Opcodes.INVOKESPECIAL, className, "<init>", descriptor, false);
+
+        // One instance of the class remains now on the stack
+        // Which will then be used in an assignment or method call
     }
 
     private String getConstructorDescriptor() {