.idea/misc.xml

@@ -40,7 +40,7 @@
       </list>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_22" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

src/main/java/Main.java

@@ -32,7 +32,7 @@ public class Main {
     }
 
 
-    static void parsefile(CharStream codeCharStream) {
+    static void parseFile(CharStream codeCharStream) {
         /* ------------------------- Scanner -> tokens ------------------------- */
         SimpleJavaLexer lexer = new SimpleJavaLexer(codeCharStream);
         CommonTokenStream tokenStream = new CommonTokenStream(lexer);
@@ -73,8 +73,8 @@ public class Main {
         /*
          * ------------------------- Semantic Analyzer -> Tast -------------------------
          */
-        SemanticAnalyzer.generateTast(abstractSyntaxTree);
-        ProgramNode typedAst = (ProgramNode) SemanticAnalyzer.generateTast(abstractSyntaxTree);
+        SemanticAnalyzer semanticAnalyzer = new SemanticAnalyzer();
+        ProgramNode typedAst = (ProgramNode) semanticAnalyzer.generateTast(abstractSyntaxTree);
 
         // Printing the Tast
         System.out.println("Tast generated");

src/main/java/ast/VarNode.java

@@ -1,5 +1,6 @@
 package ast;
 
+import ast.type.TypeNode;
 import semantic.SemanticVisitor;
 import typechecker.TypeCheckResult;
 import visitor.Visitable;
@@ -7,14 +8,14 @@ import visitor.Visitable;
 public class VarNode implements ASTNode, Visitable {
 
   private String identifier;
-  private String type;
+  private TypeNode type;
 
-  public VarNode(String type, String identifier){
+  public VarNode(TypeNode type, String identifier){
     this.type = type;
     this.identifier = identifier;
   }
 
-  public String getType(){
+  public TypeNode getType(){
     return type;
   }
 

src/main/java/parser/ASTBuilder.java

@@ -144,7 +144,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitVar(SimpleJavaParser.VarContext ctx) {
-        return new VarNode("int", ctx.getText());
+        return new VarNode(new BaseTypeNode(EnumTypeNode.INT), ctx.getText());
     }
 
     @Override

src/main/java/semantic/SemanticAnalyzer.java

@@ -22,12 +22,12 @@ import typechecker.TypeCheckResult;
 
 public class SemanticAnalyzer implements SemanticVisitor {
 
-    private ArrayList<String> currentFields = new ArrayList<>();
+    private static ArrayList<String> currentFields = new ArrayList<>();
 
     public static ArrayList<Exception> errors = new ArrayList<>();
 
-    private Scope currentScope;
-    private ClassNode currentClass;
+    private static Scope currentScope;
+    private static ClassNode currentClass;
 
     public static ASTNode generateTast(ASTNode node) {
         SemanticAnalyzer semanticCheck = new SemanticAnalyzer();
@@ -43,6 +43,13 @@ public class SemanticAnalyzer implements SemanticVisitor {
         return null;
     }
 
+    public static void clearAnalyzier(){
+        currentFields.clear();
+        errors.clear();
+        currentScope = null;
+        currentClass = null;
+    }
+
     @Override
     public TypeCheckResult analyze(ProgramNode node) {
 

src/test/java/semantic/SemanticTester.java

@@ -0,0 +1,98 @@
+package semantic;
+
+
+import ast.*;
+import ast.expression.ExpressionNode;
+import ast.member.FieldNode;
+import ast.member.MemberNode;
+import ast.member.MethodNode;
+import ast.parameter.ParameterListNode;
+import ast.parameter.ParameterNode;
+import ast.statement.AssignmentStatementNode;
+import ast.statement.StatementNode;
+import ast.type.AccessTypeNode;
+import ast.type.BaseTypeNode;
+import ast.type.EnumAccessTypeNode;
+import ast.type.EnumTypeNode;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import semantic.exeptions.AlreadyDeclearedException;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class SemanticTester {
+
+    @BeforeEach
+    public void init() {
+        SemanticAnalyzer.clearAnalyzier();
+    }
+
+    @Test
+    public void alreadyDeclaredLocalFieldVar(){
+
+        ProgramNode programNode = new ProgramNode();
+        List<ClassNode> classList = new ArrayList<ClassNode>();
+        AccessTypeNode accessTypeNode = new AccessTypeNode(EnumAccessTypeNode.PUBLIC);
+        ClassNode classNode = new ClassNode(accessTypeNode, "testClass");
+
+        MemberNode memberNode1 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar");
+        classNode.members.add(memberNode1);
+
+        MemberNode memberNode2 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar");
+        classNode.members.add(memberNode2);
+
+        classList.add(classNode);
+        programNode.classes = classList;
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
+
+        assertEquals(1, SemanticAnalyzer.errors.size());
+        assertEquals(true, SemanticAnalyzer.errors.get(0) instanceof AlreadyDeclearedException);
+        assertEquals(null, typedAst);
+
+    }
+
+    @Test
+    public void shouldWorkWithNoError(){
+
+        ProgramNode programNode = new ProgramNode();
+        List<ClassNode> classList = new ArrayList<ClassNode>();
+        AccessTypeNode accessTypeNode = new AccessTypeNode(EnumAccessTypeNode.PUBLIC);
+        ClassNode classNode = new ClassNode(accessTypeNode, "testClass");
+
+        MemberNode memberNode1 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar1");
+        classNode.members.add(memberNode1);
+
+        MemberNode memberNode2 = new FieldNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar2");
+        classNode.members.add(memberNode2);
+
+        List<ParameterNode> parameterNodeList = new ArrayList<ParameterNode>();
+        ParameterNode parameterNode1 = new ParameterNode(new BaseTypeNode(EnumTypeNode.INT), "param1");
+        parameterNodeList.add(parameterNode1);
+        ParameterListNode parameterListNode = new ParameterListNode(parameterNodeList);
+
+        List<StatementNode> statementNodeList = new ArrayList<StatementNode>();
+
+        VarNode varNode = new VarNode(new BaseTypeNode(EnumTypeNode.INT), "localVar1");
+        ExpressionNode expressionNode = new LiteralNode(1);
+
+        StatementNode statementNode1 = new AssignmentStatementNode(varNode, expressionNode);
+        statementNodeList.add(statementNode1);
+
+        MemberNode memberNode3 = new MethodNode(accessTypeNode, new BaseTypeNode(EnumTypeNode.INT), "testVar2",parameterListNode, statementNodeList );
+        classNode.members.add(memberNode3);
+
+        classList.add(classNode);
+        programNode.classes = classList;
+
+        ASTNode typedAst = SemanticAnalyzer.generateTast(programNode);
+
+        assertEquals(0, SemanticAnalyzer.errors.size());
+        assertEquals(programNode, typedAst);
+
+    }
+
+}