.idea/misc.xml

@@ -6,10 +6,10 @@
         <PerGrammarGenerationSettings>
           <option name="fileName" value="$PROJECT_DIR$/src/main/java/parser/SimpleJava.g4" />
           <option name="autoGen" value="true" />
-          <option name="outputDir" value="C:\Users\Maxi\Documents\DHBW\Compilerbau\NichtHaskell2.0\src\main\java\parser" />
+          <option name="outputDir" value="C:\Users\Johannes\Documents\Github\JavaCompiler\src\main\java" />
           <option name="libDir" value="" />
           <option name="encoding" value="" />
-          <option name="pkg" value="generated" />
+          <option name="pkg" value="parser.generated" />
           <option name="language" value="" />
           <option name="generateVisitor" value="true" />
         </PerGrammarGenerationSettings>

src/main/java/ast/ClassNode.java

@@ -12,15 +12,14 @@ import typechecker.TypeCheckResult;
 import typechecker.Visitable;
 
 public class ClassNode extends ASTNode implements Visitable {
-    public IdentifierNode identifier;
+    public String identifier;
     public AccessTypeNode accessType;
-    public String name;
     public List<MemberNode> members = new ArrayList<>();
     public boolean hasConstructor = false;
 
-    public ClassNode(AccessTypeNode accessType, String name){
+    public ClassNode(AccessTypeNode accessType, String identifier){
         this.accessType = accessType;
-        this.name = name;
+        this.identifier = identifier;
     }
 
     public void addMember(MemberNode member) {
@@ -32,7 +31,7 @@ public class ClassNode extends ASTNode implements Visitable {
 
     public void ensureConstructor(){
         if(!hasConstructor) {
-            ConstructorNode constructor = new ConstructorNode(new AccessTypeNode(EnumAccessTypeNode.PUBLIC), name);
+            ConstructorNode constructor = new ConstructorNode(new AccessTypeNode(EnumAccessTypeNode.PUBLIC), identifier);
             members.add(0,constructor);
         }
     }

src/main/java/ast/IdentifierNode.java

@@ -1,35 +0,0 @@
-package ast;
-
-import semantic.SemanticVisitor;
-import typechecker.TypeCheckResult;
-import typechecker.Visitable;
-
-public class IdentifierNode extends ASTNode implements Visitable {
-
-    private String name;
-
-    public IdentifierNode(String name){
-        this.name = name;
-    }
-
-    public String getName(){
-        return name;
-    }
-
-    public boolean equals(Object obj) {
-        if(obj instanceof IdentifierNode){
-            IdentifierNode identifier = (IdentifierNode) obj;
-            if(name.equals(identifier.getName())){
-                return true;
-            } else {
-                return false;
-            }
-        }
-        return super.equals(obj);
-    }
-
-    @Override
-    public TypeCheckResult accept(SemanticVisitor visitor) {
-        return visitor.typeCheck(this);
-    }
-}

src/main/java/ast/LiteralNode.java

@@ -5,9 +5,19 @@ import ast.expression.ExpressionNode;
 public class LiteralNode extends ExpressionNode {
 
   int value;
+  private String type;
 
   public LiteralNode(int value) {
     this.value = value;
   }
 
+  public String getType() {
+    return type;
+  }
+
+  public void setType(String type) {
+    this.type = type;
+  }
+
+
 }

src/main/java/ast/VarNode.java

@@ -0,0 +1,21 @@
+package ast;
+
+public class VarNode extends ASTNode{
+
+  private String identifier;
+  private String type;
+
+  public VarNode(String type, String identifier){
+    this.type = type;
+    this.identifier = identifier;
+  }
+
+  public String getType(){
+    return type;
+  }
+
+  public String getIdentifier(){
+    return identifier;
+  }
+
+}

src/main/java/ast/expression/ExpressionNode.java

@@ -4,4 +4,6 @@ import ast.ASTNode;
 
 public class ExpressionNode extends ASTNode {
 
+
+
 }

src/main/java/ast/member/FieldNode.java

@@ -1,6 +1,5 @@
 package ast.member;
 
-import ast.IdentifierNode;
 import ast.type.AccessTypeNode;
 import ast.type.TypeNode;
 import semantic.SemanticVisitor;

src/main/java/ast/member/MethodNode.java

@@ -1,6 +1,5 @@
 package ast.member;
 
-import ast.IdentifierNode;
 import ast.parameter.ParameterListNode;
 import ast.statement.StatementNode;
 import ast.type.AccessTypeNode;

src/main/java/ast/statement/AssignmentStatementNode.java

@@ -1,14 +1,22 @@
 package ast.statement;
 
-import ast.IdentifierNode;
+import ast.VarNode;
 import ast.expression.ExpressionNode;
+import semantic.SemanticVisitor;
+import typechecker.TypeCheckResult;
+import typechecker.Visitable;
 
-public class AssignmentStatementNode extends StatementNode {
+public class AssignmentStatementNode extends StatementNode implements Visitable {
-  public IdentifierNode identifier;
+  public VarNode varNode;
   public ExpressionNode expression;
 
-  public AssignmentStatementNode(String identifier, ExpressionNode expression) {
+  public AssignmentStatementNode(VarNode varNode, ExpressionNode expression) {
-    this.identifier = new IdentifierNode(identifier);
+    this.varNode = varNode;
     this.expression = expression;
   }
+
+  @Override
+  public TypeCheckResult accept(SemanticVisitor visitor) {
+    return visitor.typeCheck(this);
+  }
 }

src/main/java/ast/statement/VariableDeclarationStatementNode.java

@@ -1,16 +1,15 @@
 package ast.statement;
 
-import ast.IdentifierNode;
 import ast.type.TypeNode;
 import ast.expression.ExpressionNode;
 
 public class VariableDeclarationStatementNode extends StatementNode {
     public TypeNode type;
-    public IdentifierNode identifier;
+    public String identifier;
     public ExpressionNode expression;
     public VariableDeclarationStatementNode(TypeNode type, String identifier, ExpressionNode expression) {
         this.type = type;
-        this.identifier = new IdentifierNode(identifier);
+        this.identifier = identifier;
         this.expression = expression;
     }
 }

src/main/java/bytecode/ClassCodeGen.java

@@ -15,7 +15,7 @@ public class ClassCodeGen {
     public void generateClassCode(ClassNode classNode) {
         ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
         Mapper mapper = new Mapper();
-        classWriter.visit(Opcodes.V1_8, mapper.mapAccesTypeToOpcode(classNode.accessType), classNode.name, null,
+        classWriter.visit(Opcodes.V1_8, mapper.mapAccesTypeToOpcode(classNode.accessType), classNode.identifier, null,
                 "java/lang/Object", null);
 
         for (MemberNode memberNode : classNode.members) {
@@ -29,7 +29,7 @@ public class ClassCodeGen {
         }
 
         classWriter.visitEnd();
-        printIntoClassFile(classWriter.toByteArray(), classNode.identifier.getName());
+        printIntoClassFile(classWriter.toByteArray(), classNode.identifier);
 
         classWriter.visitEnd();
     }

src/main/java/parser/ASTBuilder.java

@@ -16,11 +16,9 @@ import ast.type.EnumAccessTypeNode;
 import ast.type.EnumTypeNode;
 import ast.type.TypeNode;
 import org.antlr.v4.runtime.tree.TerminalNode;
-import parser.generated.SimpleJavaBaseVisitor;
-import parser.generated.SimpleJavaParser;
-
 import java.util.ArrayList;
 import java.util.List;
+import parser.generated.*;
 import parser.generated.SimpleJavaParser.LiteralContext;
 
 public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
@@ -36,7 +34,7 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
     @Override
     public ASTNode visitClassDeclaration(SimpleJavaParser.ClassDeclarationContext ctx) {
         ClassNode classNode = new ClassNode((AccessTypeNode) visit(ctx.accessType()),ctx.IDENTIFIER().getText());
-        classNode.identifier = new IdentifierNode(ctx.IDENTIFIER().getText());
+        classNode.identifier = ctx.IDENTIFIER().getText();
         for (SimpleJavaParser.MemberDeclarationContext member : ctx.memberDeclaration()) {
             classNode.addMember((MemberNode) visit(member));
         }
@@ -136,9 +134,14 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
 
     @Override
     public ASTNode visitAssignmentStatement(SimpleJavaParser.AssignmentStatementContext ctx) {
-        String identifier = ctx.IDENTIFIER().getText();
+        VarNode varNode = (VarNode) visit(ctx.var());
         ExpressionNode expression = (ExpressionNode) visit(ctx.expression());
-        return new AssignmentStatementNode(identifier, expression);
+        return new AssignmentStatementNode(varNode, expression);
+    }
+
+    @Override
+    public ASTNode visitVar(SimpleJavaParser.VarContext ctx) {
+        return new VarNode("int", ctx.getText());
     }
 
     @Override
@@ -203,7 +206,9 @@ public class ASTBuilder extends SimpleJavaBaseVisitor<ASTNode> {
         LiteralContext literalContext = (LiteralContext) ctx;
         try {
             int intValue = Integer.parseInt(literalContext.getText());
-            return new LiteralNode(intValue);
+            LiteralNode literalNode = new LiteralNode(intValue);
+            literalNode.setType("int");
+            return literalNode;
         } catch (NumberFormatException ignored) {}
 
         return null;  // Return null or throw an exception if no valid expression found

src/main/java/parser/SimpleJava.g4

@@ -29,7 +29,9 @@ statement
 
 variableDeclarationStatement : type IDENTIFIER ('=' expression)? ';' ;
 
-assignmentStatement : IDENTIFIER '=' expression ';' ;
+assignmentStatement : var '=' expression ';' ;
+
+var: IDENTIFIER;
 
 ifStatement : 'if' '(' expression ')' statement ('else' statement)? ;
 

src/main/java/parser/generated/SimpleJavaBaseListener.java

@@ -1,4 +1,4 @@
-// Generated from C:/Users/Maxi/Documents/DHBW/Compilerbau/NichtHaskell2.0/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
+// Generated from C:/Users/Johannes/Documents/Github/JavaCompiler/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
 package parser.generated;
 
 import org.antlr.v4.runtime.ParserRuleContext;
@@ -168,6 +168,18 @@ public class SimpleJavaBaseListener implements SimpleJavaListener {
 	 * <p>The default implementation does nothing.</p>
 	 */
 	@Override public void exitAssignmentStatement(SimpleJavaParser.AssignmentStatementContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterVar(SimpleJavaParser.VarContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitVar(SimpleJavaParser.VarContext ctx) { }
 	/**
 	 * {@inheritDoc}
 	 *

src/main/java/parser/generated/SimpleJavaBaseVisitor.java

@@ -1,4 +1,4 @@
-// Generated from C:/Users/Maxi/Documents/DHBW/Compilerbau/NichtHaskell2.0/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
+// Generated from C:/Users/Johannes/Documents/Github/JavaCompiler/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
 package parser.generated;
 import org.antlr.v4.runtime.tree.AbstractParseTreeVisitor;
 
@@ -103,6 +103,13 @@ public class SimpleJavaBaseVisitor<T> extends AbstractParseTreeVisitor<T> implem
 	 * {@link #visitChildren} on {@code ctx}.</p>
 	 */
 	@Override public T visitAssignmentStatement(SimpleJavaParser.AssignmentStatementContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitVar(SimpleJavaParser.VarContext ctx) { return visitChildren(ctx); }
 	/**
 	 * {@inheritDoc}
 	 *

src/main/java/parser/generated/SimpleJavaLexer.java

@@ -1,4 +1,4 @@
-// Generated from C:/Users/Maxi/Documents/DHBW/Compilerbau/NichtHaskell2.0/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
+// Generated from C:/Users/Johannes/Documents/Github/JavaCompiler/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
 package parser.generated;
 import org.antlr.v4.runtime.Lexer;
 import org.antlr.v4.runtime.CharStream;

src/main/java/parser/generated/SimpleJavaListener.java

@@ -1,4 +1,4 @@
-// Generated from C:/Users/Maxi/Documents/DHBW/Compilerbau/NichtHaskell2.0/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
+// Generated from C:/Users/Johannes/Documents/Github/JavaCompiler/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
 package parser.generated;
 import org.antlr.v4.runtime.tree.ParseTreeListener;
 
@@ -137,6 +137,16 @@ public interface SimpleJavaListener extends ParseTreeListener {
 	 * @param ctx the parse tree
 	 */
 	void exitAssignmentStatement(SimpleJavaParser.AssignmentStatementContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link SimpleJavaParser#var}.
+	 * @param ctx the parse tree
+	 */
+	void enterVar(SimpleJavaParser.VarContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link SimpleJavaParser#var}.
+	 * @param ctx the parse tree
+	 */
+	void exitVar(SimpleJavaParser.VarContext ctx);
 	/**
 	 * Enter a parse tree produced by {@link SimpleJavaParser#ifStatement}.
 	 * @param ctx the parse tree

src/main/java/parser/generated/SimpleJavaVisitor.java

@@ -1,4 +1,4 @@
-// Generated from C:/Users/Maxi/Documents/DHBW/Compilerbau/NichtHaskell2.0/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
+// Generated from C:/Users/Johannes/Documents/Github/JavaCompiler/src/main/java/parser/SimpleJava.g4 by ANTLR 4.13.1
 package parser.generated;
 import org.antlr.v4.runtime.tree.ParseTreeVisitor;
 
@@ -88,6 +88,12 @@ public interface SimpleJavaVisitor<T> extends ParseTreeVisitor<T> {
 	 * @return the visitor result
 	 */
 	T visitAssignmentStatement(SimpleJavaParser.AssignmentStatementContext ctx);
+	/**
+	 * Visit a parse tree produced by {@link SimpleJavaParser#var}.
+	 * @param ctx the parse tree
+	 * @return the visitor result
+	 */
+	T visitVar(SimpleJavaParser.VarContext ctx);
 	/**
 	 * Visit a parse tree produced by {@link SimpleJavaParser#ifStatement}.
 	 * @param ctx the parse tree

src/main/java/semantic/SemanticAnalyzer.java

@@ -25,7 +25,7 @@ public class SemanticAnalyzer implements SemanticVisitor {
     if (result.isValid()) {
       return node;
     } else {
-      throw new RuntimeException("errorString ERROR");
+      throw new RuntimeException("Not Valid");
     }
   }
 
@@ -55,14 +55,14 @@ public class SemanticAnalyzer implements SemanticVisitor {
     return null;
   }
 
-  @Override
-  public TypeCheckResult typeCheck(IdentifierNode identifierNode) {
-    return null;
-  }
-
   @Override
   public TypeCheckResult typeCheck(MethodNode methodNode) {
     List<StatementNode> statements = methodNode.statements;
+    for (StatementNode statement : statements) {
+      if(statement instanceof AssignmentStatementNode assignmentStatementNode) {
+        assignmentStatementNode.accept(this);
+      }
+    }
     return null;
   }
 
@@ -76,4 +76,17 @@ public class SemanticAnalyzer implements SemanticVisitor {
     return null;
   }
 
+  @Override
+  public TypeCheckResult typeCheck(AssignmentStatementNode assignmentStatementNode) {
+    if(assignmentStatementNode.expression instanceof LiteralNode literalNode) {
+      VarNode varNode = assignmentStatementNode.varNode;
+      if(varNode.getType().equals(literalNode.getType())) {
+        System.out.println("Type is same");
+      } else {
+        System.out.println("Type Mismatch");
+      }
+    }
+    return null;
+  }
+
 }

src/main/java/semantic/SemanticVisitor.java

@@ -1,12 +1,11 @@
 package semantic;
 
 
-import ast.ASTNode;
 import ast.ClassNode;
-import ast.IdentifierNode;
 import ast.ProgramNode;
 import ast.member.FieldNode;
 import ast.member.MethodNode;
+import ast.statement.AssignmentStatementNode;
 import typechecker.TypeCheckResult;
 
 public interface SemanticVisitor {
@@ -16,13 +15,11 @@ public interface SemanticVisitor {
 
     TypeCheckResult typeCheck(ClassNode toCheck);
 
-    TypeCheckResult typeCheck(IdentifierNode toCheck);
-
     TypeCheckResult typeCheck(MethodNode toCheck);
 
     TypeCheckResult typeCheck(FieldNode toCheck);
-//
+
-//    TypeCheckResult typeCheck(Assign toCheck);
+    TypeCheckResult typeCheck(AssignmentStatementNode toCheck);
 //
 //    TypeCheckResult typeCheck(MethodParameter toCheck);
 //