public Literal(TParser.LiteralContext ctx, IToken parseNode) : base(parseNode.ToPosition())
{
var token = ctx.Start;
Value = token.Type switch
{
TParser.StringLiteral => token.Text.Substring(1, token.Text.Length - 2),
TParser.BooleanLiteral => token.Text == "verdadero",
TParser.DecimalLiteral => double.Parse(token.Text),
TParser.NaN => double.NaN,
TParser.NullLiteral => null,
_ => null
};
}
/// <summary>
/// Visit a parse tree produced by the <c>Literal</c>
/// labeled alternative in <see cref="TParser.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 VisitLiteral([NotNull] TParser.LiteralContext context)
{
return(VisitChildren(context));
}
public override Node VisitLiteral(TParser.LiteralContext context)
{
return(new Literal(context, context.Start));
}
/// <summary>
/// Exit a parse tree produced by the <c>Literal</c>
/// labeled alternative in <see cref="TParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitLiteral([NotNull] TParser.LiteralContext context)
{
}
