object Expr.IVisitor <object> .Visit(Expr.Postfix _postfix) { object left = Evaluate(_postfix.left); CheckNumberOperand(_postfix.opp, left); switch (_postfix.opp.type) { case TokenType.PLUS_PLUS: return((double)left + 1); case TokenType.MINUS_MINUS: return((double)left - 1); default: break; } return(null); }
string Expr.IVisitor <string> .Visit(Expr.Postfix _postfix) { return(Parenthesize(_postfix.opp.lexeme)); }
public object Visit(Expr.Postfix _postfix) { Resolve(_postfix.left); return(null); }