Antlr labels für ExpressionContext eingeführt, um StatementGenerator weiterzuentwickeln

src/main/antlr4/de/dhbwstuttgart/parser/antlr/Java17Parser.g4

@@ -610,7 +610,7 @@ methodCall
     ;
 
 expression
-    : primary
+    : primary  #primaryexpression
     | expression bop='.'
       (
          identifier
@@ -619,31 +619,31 @@ expression
        | NEW nonWildcardTypeArguments? innerCreator
        | SUPER superSuffix
        | explicitGenericInvocation
-      )
+      )  # dottedexpression
-    | expression '[' expression ']'
+    | expression '[' expression ']' #arrayexpression
-    | methodCall
+    | methodCall  #methodcallexpression 
-    | NEW creator
+    | NEW creator  #newinstanceexpression
-    | '(' annotation* typeType ('&' typeType)* ')' expression
+    | '(' annotation* typeType ('&' typeType)* ')' expression  #castexpression
-    | expression postfix=('++' | '--')
+    | expression postfix=('++' | '--')  #postfixexpression
-    | prefix=('+'|'-'|'++'|'--') expression
+    | prefix=('+'|'-'|'++'|'--') expression  #prefixincdecexpression
-    | prefix=('~'|'!') expression
+    | prefix=('~'|'!') expression  #prefixnegateexpression
-    | expression bop=('*'|'/'|'%') expression
+    | expression bop=('*'|'/'|'%') expression  #mathmuldivmodexpression
-    | expression bop=('+'|'-') expression
+    | expression bop=('+'|'-') expression  #mathaddsubexpression
-    | expression ('<' '<' | '>' '>' '>' | '>' '>') expression
+    | expression ('<' '<' | '>' '>' '>' | '>' '>') expression  #shifexpression
-    | expression bop=('<=' | '>=' | '>' | '<') expression
+    | expression bop=('<=' | '>=' | '>' | '<') expression  #compareexpression
-    | expression bop=INSTANCEOF (typeType | pattern)
+    | expression bop=INSTANCEOF (typeType | pattern)  #instanceofexpression
-    | expression bop=('==' | '!=') expression
+    | expression bop=('==' | '!=') expression  #compareequalityexpression
-    | expression bop='&' expression
+    | expression bop='&' expression  #bitwiseandexpression
-    | expression bop='^' expression
+    | expression bop='^' expression  #bitwisexorexpression
-    | expression bop='|' expression
+    | expression bop='|' expression  #bitwiseorexpression
-    | expression bop='&&' expression
+    | expression bop='&&' expression  #andexpression
-    | expression bop='||' expression
+    | expression bop='||' expression  #orexpression
-    | <assoc=right> expression bop='?' expression ':' expression
+    | <assoc=right> expression bop='?' expression ':' expression  #conditionalassignexpression
     | <assoc=right> expression
       bop=('=' | '+=' | '-=' | '*=' | '/=' | '&=' | '|=' | '^=' | '>>=' | '>>>=' | '<<=' | '%=')
-      expression
+      expression  #assignexpression
-    | lambdaExpression // Java8
+    | lambdaExpression  #lambdaexpression // Java8
-    | switchExpression // Java17
+    | switchExpression  #switchexpression // Java17
 
     // Java 8 methodReference
     | expression '::' typeArguments? identifier

src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/ASTGen.java

@@ -298,10 +298,11 @@ public class ASTGen {
       RefType superClass, GenericsRegistry generics) {
     GenericsRegistry localgenerics = generics;
     MethodDeclarationContext methoddeclaration;
-    GenericDeclarationListContext genericdeclarations;GenericDeclarationList gtvDeclarations;
+    GenericDeclarationListContext genericdeclarations;
+    GenericDeclarationList gtvDeclarations;
     MethodHeaderContext header;
     String name;
-    if(methodContext instanceof GenericmethodContext){
+    if (methodContext instanceof GenericmethodContext) {
       GenericmethodContext gmc = new GenericmethodContext(methodContext);
       genericdeclarations = gmc.genericMethodDeclaration().genericDeclarationList();
       methoddeclaration = gmc.genericMethodDeclaration().methodDeclaration();
@@ -309,7 +310,7 @@ public class ASTGen {
       name = header.identifier().getText();
       localgenerics.putAll(createGenerics(genericdeclarations, parentClass, name, reg, generics));
       gtvDeclarations = TypeGenerator.convert(genericdeclarations, parentClass, name, reg, localgenerics);
-    }else{
+    } else {
       MethoddeclContext mdc = new MethoddeclContext(methodContext);
       methoddeclaration = mdc.methodDeclaration();
       header = methoddeclaration.methodHeader();
@@ -317,10 +318,9 @@ public class ASTGen {
     }
 
     RefTypeOrTPHOrWildcardOrGeneric retType;
-    if(header.refType() != null){
+    if (header.refType() != null) {
-      retType = TypeGenerator.convert(header.refType())
+      retType = TypeGenerator.convert(header.refType());
     }
-    
 
     return null;
   }

src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java

@@ -11,6 +11,7 @@ import de.dhbwstuttgart.parser.antlr.Java17Parser.ContinuestmtContext;
 import de.dhbwstuttgart.parser.antlr.Java17Parser.ForControlContext;
 import de.dhbwstuttgart.parser.antlr.Java17Parser.ForloopContext;
 import de.dhbwstuttgart.parser.antlr.Java17Parser.LabeledstmtContext;
+import de.dhbwstuttgart.parser.antlr.Java17Parser.MethodCallContext;
 import de.dhbwstuttgart.parser.antlr.Java17Parser.ReturnstmtContext;
 import de.dhbwstuttgart.parser.antlr.Java17Parser.SemistmtContext;
 import de.dhbwstuttgart.parser.antlr.Java17Parser.StmtexpressionContext;
@@ -157,71 +158,105 @@ public class StatementGenerator {
 
     private Statement convert(Java17Parser.StmtexpressionContext stmt) {
         ExpressionContext expr = stmt.statementExpression;
-        String op;
+        Token offset = stmt.getStart();
-        if (!(op = expr.bop.getText()).isEmpty()) {
+        String op = expr.bop.getText();
-            switch (op) {
+        if(!Objects.isNull(expr.methodCall())){
-                case "=":
+            return convertMethodCall(expr, offset);
-                case "+=":
+        }else if(!Objects.isNull(expr.innerCreator())){
-                case "-=":
-                case "*=":
-                case "/=":
-                case "&=":
-                case "|=":
-                case "^=":
-                case ">>=":
-                case ">>>=":
-                case "<<=":
-                case "%=":
-                    ExpressionContext leftside = expr.expression(0);
-                    AssignLeftSide leftHandSide = convert(leftside.getText(), leftside.getStart());
-                    Statement ret = new Assign(leftHandSide, convert(expr.expression(1)), expr.getStart());
-                    ret.setStatement();
-                    return ret;
-                default:
-                    throw new NotImplementedException();
-            }
-        } else if (!(op = expr.prefix.getText()).isEmpty()) {
-
-        } else if (!(op = expr.postfix.getText()).isEmpty()) {
 
+        }else if()
+        else if (!op.isEmpty()) {
+            return convertAssignment(expr, op);
         }
 
-        if (stmt.preIncrementExpression() != null) {
+        if (!(op = expr.prefix.getText()).isEmpty()) {
-            return convert(stmt.preIncrementExpression());
+            return convertPrefixStatementExpression(expr, offset);
-        } else if (stmt.preDecrementExpression() != null) {
+        } else if (!(op = expr.postfix.getText()).isEmpty()) {
-            return convert(stmt.preDecrementExpression());
+            return convertPostfixStatementExpression(expr, offset);
-        } else if (stmt.postIncrementExpression() != null) {
+        } else if (!(Objects.isNull(expr.methodCall()))) {
-            return convert(stmt.postIncrementExpression());
+            return convertMethodCall(expr, offset);
-        } else if (stmt.postDecrementExpression() != null) {
-            return convert(stmt.postDecrementExpression());
-        } else if (stmt.methodInvocation() != null) {
-            return convert(stmt.methodInvocation());
-        } else if (stmt.classInstanceCreationExpression() != null) {
-            return convert(stmt.classInstanceCreationExpression());
         } else
             throw new NotImplementedException();
+
+        if (stmt.classInstanceCreationExpression() != null) {
+            return convert(stmt.classInstanceCreationExpression());
+        }
     }
 
-    private Statement convert(Java17Parser.AssignmentContext stmt) {
+    private Statement convertAssignment(ExpressionContext expr, String operator) {
-
+        switch (operator) {
+            case "=":
+                ExpressionContext leftside = expr.expression(0);
+                AssignLeftSide leftHandSide = convert(leftside.getText(), leftside.getStart());
+                Statement ret = new Assign(leftHandSide, convert(expr.expression(1)), expr.getStart());
+                ret.setStatement();
+                return ret;
+            case "+=":
+            case "-=":
+            case "*=":
+            case "/=":
+            case "&=":
+            case "|=":
+            case "^=":
+            case ">>=":
+            case ">>>=":
+            case "<<=":
+            case "%=":
+            default:
+                throw new NotImplementedException();
+        }
     }
 
-    public Receiver getReceiver(Expression expr) {
+    private Statement convertPrefixStatementExpression(ExpressionContext expr, Token offset) {
-        if (expr instanceof StaticClassName) {
+        String op = expr.bop.getText();
-            return (Receiver) expr;
+        Expression argument = convert(expr);
+        Statement ret;
+        if (op.equals("++")) {
+            ret = new UnaryExpr(UnaryExpr.Operation.PREINCREMENT, argument, TypePlaceholder.fresh(offset), offset);
+            ret.setStatement();
+            return ret;
+        } else if (op.equals("--")) {
+            ret = new UnaryExpr(UnaryExpr.Operation.PREDECREMENT, argument, TypePlaceholder.fresh(offset), offset);
+            ret.setStatement();
+            return ret;
         } else {
-            return new ExpressionReceiver(expr);
+            throw new NotImplementedException();
         }
     }
 
-    private Statement convert(Java17Parser.MethodInvocationContext methodInvocationContext) {
+    private Statement convertPostfixStatementExpression(ExpressionContext expr, Token offset) {
-        String name;
+        String op = expr.bop.getText();
-        if (methodInvocationContext.methodName() != null) {
+        Expression argument = convert(expr);
-            name = methodInvocationContext.methodName().Identifier().getText();
+        Statement ret;
-        } else {// if(methodInvocationContext.Identifier() != null){
+        if (op.equals("++")) {
-            name = methodInvocationContext.Identifier().getText();
+            ret = new UnaryExpr(UnaryExpr.Operation.POSTINCREMENT, argument, TypePlaceholder.fresh(offset), offset);
+            ret.setStatement();
+            return ret;
+        } else if (op.equals("--")) {
+            ret = new UnaryExpr(UnaryExpr.Operation.POSTDECREMENT, argument, TypePlaceholder.fresh(offset), offset);
+            ret.setStatement();
+            return ret;
+        } else {
+            throw new NotImplementedException();
         }
+    }
+
+    private Statement convertMethodCall(ExpressionContext expr, Token offset) {
+        MethodCallContext methodc = expr.methodCall();
+        String name;
         Expression receiver;
+        if (methodc.identifier() != null) {
+            name = methodc.identifier().getText();
+            receiver = null;
+        } else if (!Objects.isNull(methodc.SUPER())) {
+            // if(methodInvocationContext.Identifier() != null){
+            name = methodc.SUPER().getText();
+            receiver = new Super(offset);
+        } else if (!Objects.isNull(methodc.THIS())) {
+            name = methodc.THIS().getText();
+            receiver = new This(offset);
+        }
+
         if (methodInvocationContext.typeName() != null) {
             receiver = generateLocalOrFieldVarOrClassName(methodInvocationContext.typeName().getText(),
                     methodInvocationContext.typeName().getStart());
@@ -236,17 +271,26 @@ public class StatementGenerator {
         } else
             throw new NotImplementedException();
 
-        ArgumentList argumentList = convert(methodInvocationContext.argumentList());
+        ArgumentList argumentList = convertArguments(methodc.expressionList());
         ArrayList<RefTypeOrTPHOrWildcardOrGeneric> argTypes = argumentList.getArguments().stream()
-                .map(x -> TypePlaceholder.fresh(methodInvocationContext.getStart()))
+                .map(x -> (RefTypeOrTPHOrWildcardOrGeneric) TypePlaceholder.fresh(offset))
                 .collect(Collectors.toCollection(ArrayList::new));
-        MethodCall ret = new MethodCall(TypePlaceholder.fresh(methodInvocationContext.getStart()),
+
+        MethodCall ret = new MethodCall(TypePlaceholder.fresh(offset),
                 getReceiver(receiver), name, argumentList, TypePlaceholder.fresh(methodInvocationContext.getStart()),
                 argTypes, methodInvocationContext.getStart());
         ret.setStatement();
         return ret;
     }
 
+    public Receiver getReceiver(Expression expr) {
+        if (expr instanceof StaticClassName) {
+            return (Receiver) expr;
+        } else {
+            return new ExpressionReceiver(expr);
+        }
+    }
+
     private ArgumentList convert(Java17Parser.ArgumentListContext argumentListContext) {
         if (argumentListContext == null)
             return new ArgumentList(new ArrayList<>(), new NullToken());
@@ -344,36 +388,6 @@ public class StatementGenerator {
         return ret;
     }
 
-    private Statement convert(Java17Parser.PreIncrementExpressionContext stmt) {
-        Expression argument = convert(stmt.unaryExpression());
-        Token offset = stmt.getStart();
-        Statement ret = new UnaryExpr(UnaryExpr.Operation.PREINCREMENT, argument, TypePlaceholder.fresh(offset),
-                offset);
-        ret.setStatement();
-        return ret;
-    }
-
-    private Statement convert(Java17Parser.PreDecrementExpressionContext stmt) {
-        Statement ret = new UnaryExpr(UnaryExpr.Operation.PREDECREMENT, convert(stmt.unaryExpression()),
-                TypePlaceholder.fresh(stmt.getStart()), stmt.getStart());
-        ret.setStatement();
-        return ret;
-    }
-
-    private Statement convert(Java17Parser.PostIncrementExpressionContext stmt) {
-        Statement ret = new UnaryExpr(UnaryExpr.Operation.POSTINCREMENT, convert(stmt.postfixExpression()),
-                TypePlaceholder.fresh(stmt.getStart()), stmt.getStart());
-        ret.setStatement();
-        return ret;
-    }
-
-    private Statement convert(Java17Parser.PostDecrementExpressionContext stmt) {
-        Statement ret = new UnaryExpr(UnaryExpr.Operation.POSTDECREMENT, convert(stmt.postfixExpression()),
-                TypePlaceholder.fresh(stmt.getStart()), stmt.getStart());
-        ret.setStatement();
-        return ret;
-    }
-
     private AssignLeftSide convert(String leftHandSide, Token start) {
         Expression leftSide = generateLocalOrFieldVarOrClassName(leftHandSide, start);
         if (leftSide instanceof FieldVar)
@@ -449,6 +463,15 @@ public class StatementGenerator {
         throw new NotImplementedException();
     }
 
+    private ArgumentList convertArguments(Java17Parser.ExpressionListContext arglist) {
+        Token offset = arglist.getStart();
+        List<Expression> arguments = new ArrayList<Expression>();
+        for (ExpressionContext arg : arglist.expression()) {
+            arguments.add(convert(arg));
+        }
+        return new ArgumentList(arguments, offset);
+    }
+
     private List<Statement> convert(Java17Parser.LocalVariableDeclarationContext declaration) {
         List<Statement> ret = new ArrayList<>();
         if (declaration.variableModifier() != null && declaration.variableModifier().size() > 0) {