1. Support convert(expr, target_type) function, which is same as CastExpr 2. Support cast (expr as signed/unsigned int) This is just for compatibility, the signed/unsigned specification is meaningless.
1. Support convert(expr, target_type) function, which is same as CastExpr 2. Support cast (expr as signed/unsigned int) This is just for compatibility, the signed/unsigned specification is meaningless.