/// <summary>
/// Visit a parse tree produced by <see cref="KoraliumParser.literal_value"/>.
/// <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_value([NotNull] KoraliumParser.Literal_valueContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="KoraliumParser.literal_value"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitLiteral_value([NotNull] KoraliumParser.Literal_valueContext context)
{
}
public override object VisitLiteral_value([NotNull] KoraliumParser.Literal_valueContext context)
{
if (context.NULL() != null)
{
return(new NullLiteral());
}
var value = context.GetText();
//Its a string literal
if (context.STRING_LITERAL() != null)
{
value = value.Trim('\'');
return(new StringLiteral()
{
Value = value
});
}
if (context.NUMERIC_LITERAL() != null)
{
if (decimal.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var val))
{
if ((val % 1) == 0)
{
return(new IntegerLiteral()
{
Value = (long)val
});
}
else
{
return(new NumericLiteral()
{
Value = val
});
}
}
else
{
throw new SqlParserException($"Unmatched literal: {value}");
}
}
if (context.TRUE() != null)
{
return(new BooleanLiteral()
{
Value = true
});
}
if (context.FALSE() != null)
{
return(new BooleanLiteral()
{
Value = false
});
}
throw new NotImplementedException();
}
