// 独自定義の解釈
public override Result VisitExpr_define([NotNull] calcParser.Expr_defineContext context)
{
if (context.Start.Text.ToUpper() == ("PI"))
{
return(new Result(true, CalcRule.CalcReal, (float)Math.PI));
}
else
{
Debug.Assert(false);
return(DefaultResult);
}
}
/// <summary>
/// Visit a parse tree produced by the <c>expr_define</c>
/// labeled alternative in <see cref="calcParser.expr"/>.
/// <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 VisitExpr_define([NotNull] calcParser.Expr_defineContext context)
{
return(VisitChildren(context));
}
