public override Expr VisitRegExLitExpr([NotNull] JPathParser.RegExLitExprContext context)
{
try
{
var regex = new Regex(context.Value.Text.Trim('/', '!'));
return(new RegexLit(regex));
}
catch (ArgumentException e)
{
throw AstError(context.Value, $"Value '{context.Value}' is not a valid regex: {e.Message}");
}
}
public override Expr VisitRegExLitExpr([NotNull] JPathParser.RegExLitExprContext context)
{
try
{
var regexStr =
context.Value.Text.StartsWith("/") ? context.Value.Text.Trim('/') :
context.Value.Text.StartsWith("!") ? context.Value.Text.Trim('!') :
context.Value.Text;
return(new RegexLit(new Regex(regexStr)));
}
catch (ArgumentException e)
{
throw AstError(context.Value, $"Value '{context.Value.Text}' is not a valid regex: {e.Message}");
}
}
/// <summary>
/// Visit a parse tree produced by the <c>RegExLitExpr</c>
/// labeled alternative in <see cref="JPathParser.literal"/>.
/// <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 VisitRegExLitExpr([NotNull] JPathParser.RegExLitExprContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by the <c>RegExLitExpr</c>
/// labeled alternative in <see cref="JPathParser.literal"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitRegExLitExpr([NotNull] JPathParser.RegExLitExprContext context)
{
}
