Merge remote-tracking branch 'origin/master'

src/main/java/Compiler.java

@@ -104,6 +104,7 @@ public class Compiler {
 //        }
 
 
+        abstractSyntaxTree.classes.get(2).methodDecls.get(0).codeBlock.returnType = "int";
         abstractSyntaxTree.typeCheck();
 
         abstractSyntaxTree.codeGen();

src/main/java/Input.java

@@ -6,16 +6,13 @@ class Example {
     int i;
     boolean b;
     char c;
-    void callM(){
-        Example2 example2 = new Example2();
-        example2.m(1);
-    }
 
 }
 class Example2 {
     boolean instVarBool;
     int m(int n){
-        boolean a = this.instVarBool;
+        int localA;
+        int localB;
         return n;
     }
 }

src/main/java/abstractSyntaxTree/Class/MethodDecl.java

@@ -36,6 +36,10 @@ public class MethodDecl implements Node {
 
     public TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext, HashMap<String, HashMap<String, String>> typeContext) throws Exception {
         // jede methode als block statement aufrufen und jede neue locale varibale in localvars schreiben
+        List<Parameter> parametersList = parameters.parameterList;
+        for(Parameter parameter : parametersList){
+            localVars.put(parameter.identifier, parameter.type);
+        }
 
         TypeCheckResult result = new TypeCheckResult();
         codeBlock.typeCheck(methodContext, typeContext, localVars);

src/main/java/abstractSyntaxTree/Expression/InstVarExpression.java

@@ -9,6 +9,7 @@ import org.objectweb.asm.Opcodes;
 
 import java.util.HashMap;
 import java.util.LinkedHashMap;
+import java.util.Objects;
 
 public class InstVarExpression implements IExpression{
 

src/main/java/abstractSyntaxTree/Expression/LocalVarIdentifier.java

@@ -29,7 +29,7 @@ public class LocalVarIdentifier implements IExpression{
         if (localVars.containsKey(identifier)) {
             result.type = localVars.get(identifier);
         } else {
-            throw new Exception("TypeCheck Exception: local var does not exist");
+            throw new Exception("TypeCheck Exception: Local var " + identifier + " does not exist.");
         }
         return result;
     }

src/main/java/abstractSyntaxTree/Statement/BlockStatement.java

@@ -36,10 +36,16 @@ public class BlockStatement extends AbstractType implements IStatement {
         }
 
         for (IStatement statement : statements) {
+
             // todo remove later if there are no null statement any more
             if (statement != null) {
                 TypeCheckResult typeOfCurrentStatement = statement.typeCheck(methodContext, typeContext, localVars);
 
+                if(statement instanceof LocalVarDecl){
+                    LocalVarDecl localVarDecl = (LocalVarDecl) statement;
+                    localVars.put(localVarDecl.identifier, localVarDecl.type);
+                }
+
                 if (typeOfCurrentStatement.type.contains(",")) {
                     // else if has 2 returns, all code paths must retrun a value.
                     String[] substrings = typeOfCurrentStatement.type.split(",");
@@ -49,10 +55,10 @@ public class BlockStatement extends AbstractType implements IStatement {
 
                     if (!firstType.equals(this.returnType) || !firstType.equals(this.returnType)) {
                         if (!firstType.equals("void")) {
-                            throw new Exception("TypeCeck Exception: if paths return wrong type");
+                            throw new Exception("TypeCheck Exception: if paths return wrong type");
                         }
                         if (!secondType.equals("void")) {
-                            throw new Exception("TypeCeck Exception: else paths return wrong type");
+                            throw new Exception("TypeCheck Exception: else paths return wrong type");
                         }
                         boolean firstIsVoid = firstType.equals("void");