Revert "Some small changes for SemanticAnalyzer"

This reverts commit dbde4e8047.

src/main/java/ast/type/type/TypeEnum.java

@@ -4,6 +4,5 @@ public enum TypeEnum {
     VOID,
     INT,
     CHAR,
-    BOOL,
-    NULL
+    BOOL
 }

src/main/java/semantic/SemanticAnalyzer.java

@@ -254,11 +254,6 @@ public class SemanticAnalyzer implements SemanticVisitor {
                 return new TypeCheckResult(true, type);
             } else if (currentScope.getLocalVar(toCheck.identifier) != null) {
                 var type = currentScope.getLocalVar(toCheck.identifier);
-                MemberAccessNode memberAccessNode = new MemberAccessNode(false);
-                memberAccessNode.identifiers.add(currentClass.identifier);
-                memberAccessNode.identifiers.add(toCheck.identifier);
-                toCheck.memberAccess = memberAccessNode;
-                toCheck.setTypeNode(type);
                 return new TypeCheckResult(true, type);
             }
         }
@@ -333,16 +328,7 @@ public class SemanticAnalyzer implements SemanticVisitor {
         if (toCheck.target != null) {
             if(toCheck.target.memberAccess == null){
                 MemberAccessNode memberAccessNode = new MemberAccessNode(false);
-                var identifierType = currentFields.get(toCheck.target.identifier);
-                if(identifierType == null){
-                    identifierType = currentScope.getLocalVar(toCheck.target.identifier);
-                }
-                if(identifierType instanceof ReferenceType referenceType){
-                    memberAccessNode.identifiers.add(referenceType.getIdentifier());
-                } else {
                 memberAccessNode.identifiers.add(currentClass.identifier);
-
-                }
                 memberAccessNode.identifiers.add(toCheck.target.identifier);
                 toCheck.target.memberAccess = memberAccessNode;
             }
@@ -702,9 +688,6 @@ public class SemanticAnalyzer implements SemanticVisitor {
             case BOOLEAN_VALUE -> {
                 return new TypeCheckResult(true, new BaseType(TypeEnum.BOOL));
             }
-            case NULL_VALUE -> {
-                return new TypeCheckResult(true, currentNullType);
-            }
             default -> {
                 return new TypeCheckResult(false, null);
             }

src/test/resources/input/typedAstFeatureTests/CorrectTest.java

@@ -1,14 +1,8 @@
-public class Class1 {
-    public int test(){
-        Class2 class2 = new Class2();
-        int a = class2.test();
-        return a;
-    }
-}
-
-public class Class2
-{
-    public int test(){
-        return 6+2*2;
+public class If {
+    public If() {
+        int intValue = 5;
+        if(intValue == 5) {
+            intValue--;
+        }
     }
 }