public override int VisitInPower([NotNull] GrammarParser.InPowerContext context) { var l = Left(context); var r = Right(context); int ans; if (r < 0) { var ex = new ArgumentOutOfRangeException(); ex.Data.Add("Type", "expression in negative power"); throw ex; } else if (r == 0 && l == 0) { var ex = new ArgumentOutOfRangeException(); ex.Data.Add("Type", "null expression in null power"); throw ex; } else { ans = (int)Math.Pow(l, r); } Console.WriteLine($"pow {ans}"); return(ans); }
/// <summary> /// Visit a parse tree produced by the <c>InPower</c> /// labeled alternative in <see cref="GrammarParser.expression"/>. /// <para> /// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/> /// on <paramref name="context"/>. /// </para> /// </summary> /// <param name="context">The parse tree.</param> /// <return>The visitor result.</return> public virtual Result VisitInPower([NotNull] GrammarParser.InPowerContext context) { return(VisitChildren(context)); }
/// <summary> /// Exit a parse tree produced by the <c>InPower</c> /// labeled alternative in <see cref="GrammarParser.expression"/>. /// <para>The default implementation does nothing.</para> /// </summary> /// <param name="context">The parse tree.</param> public virtual void ExitInPower([NotNull] GrammarParser.InPowerContext context) { }