[news.eclipse.tools.jdt] Using the ASTParser for parsing an expression..

[judith.wiesinger@xxxxxxxxxxxxxxx (Judith Wiesinger)]

Hello there,

I want to use the ASTParser for parsing an expression in order to get the 
return type.

       String expr1 = "5 + 4";
       //String expr2 = "myVar.myMethod(myParam)";
       
       ASTParser parser = ASTParser.newParser(AST.JLS3);
       parser.setKind(ASTParser.K_EXPRESSION);
       parser.setResolveBindings(true);
       parser.setSource(expr1.toCharArray());
       
       ASTNode astNode = parser.createAST(null);        
       Expression expr = (Expression) astNode;
       ITypeBinding typeBinding = expr.resolveTypeBinding();

The problem is that typeBinding is null. How can I get the return type 
then?


2nd question: If I have got a more complex expression (like expr2) how do 
I add the declaration of those variables to the expression?

       AST ast = astNode.getAST();
       SingleVariableDeclaration varDecl = 
ast.newSingleVariableDeclaration();
	varDecl.setType(ast.newSimpleType(ast.newSimpleName("MyType")));
	varDecl.setName(ast.newSimpleName("myVar"));

Thanks a lot for your consideration!

Judith