public override double VisitFunctionExp(SpreadsheetParser.FunctionExpContext context) { var name = context.NAME().GetText(); var result = name switch { "sqrt" => Math.Sqrt(Visit(context.expression())), "log" => Math.Log10(Visit(context.expression())), _ => 0 // if there is no function the result remains 0; maybe should throw an exception }; return(result); } }
public override double VisitFunctionExp(SpreadsheetParser.FunctionExpContext context) { String name = context.NAME().GetText(); double result = 0; switch (name) { case "sqrt": result = Math.Sqrt(Visit(context.expression())); break; case "log": result = Math.Log10(Visit(context.expression())); break; } return(result); }
/// <summary> /// Exit a parse tree produced by the <c>functionExp</c> /// labeled alternative in <see cref="SpreadsheetParser.expression"/>. /// <para>The default implementation does nothing.</para> /// </summary> /// <param name="context">The parse tree.</param> public virtual void ExitFunctionExp([NotNull] SpreadsheetParser.FunctionExpContext context) { }
/// <summary> /// Visit a parse tree produced by the <c>functionExp</c> /// labeled alternative in <see cref="SpreadsheetParser.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 VisitFunctionExp([NotNull] SpreadsheetParser.FunctionExpContext context) { return(VisitChildren(context)); }