/// <summary>
/// Call the Consume parser of this <see cref="Pattern"/> on the <paramref name="source"/> with the <paramref name="result"/>.
/// </summary>
/// <param name="source">The <see cref="Source"/> to consume.</param>
/// <param name="result">A <see cref="Result"/> containing whether a match occured and the captured <see cref="String"/>.</param
/// <param name="trace">The <see cref="ITrace"/> to record steps in.</param>
internal override void Consume(ref Source source, ref Result result, ITrace?trace)
{
From.Consume(ref source, ref result, trace);
if (!result)
{
result.Error = Error.ConsumeFailed;
return;
}
To.Consume(ref source, ref result, trace);
while (!result)
{
if (source.EOF)
{
break;
}
source.Position++;
result.Length++;
if (To.CheckHeader(ref source))
{
To.Consume(ref source, ref result, trace);
}
}
if (!result)
{
result.Error = Error.EndOfSource;
}
}
internal override void Consume(ref Source Source, ref Result Result)
{
From.Consume(ref Source, ref Result);
if (!Result)
{
Result.Error = new ConsumeFailedError(Expected: From.ToString());
return;
}
To.Consume(ref Source, ref Result);
while (!Result)
{
if (Source.EOF)
{
break;
}
Source.Position++;
Result.Length++;
if (To.CheckHeader(ref Source))
{
To.Consume(ref Source, ref Result);
}
}
if (!Result)
{
Result.Error = new EndOfSourceError(Expected: To.ToString());
}
}
internal override void Consume(ref Source Source, ref Result Result)
{
From.Consume(ref Source, ref Result);
if (!Result)
{
Result.Error = new ConsumeFailedError(Expected: From.ToString());
return;
}
To.Consume(ref Source, ref Result);
while (!Result)
{
if (Source.EOF)
{
break;
}
Source.Position++;
Result.Length++;
//Check for the escape before checking for the end of the range
if (Escape.CheckHeader(ref Source))
{
Escape.Consume(ref Source, ref Result);
Result.Error = new ConsumeFailedError(Expected: To.ToString()); //We need an error to continue the loop, and this is the current error
}
if (To.CheckHeader(ref Source))
{
To.Consume(ref Source, ref Result);
}
}
if (!Result)
{
Result.Error = new EndOfSourceError(Expected: To.ToString());
}
}
internal override Boolean CheckHeader(ref Source Source) => From.CheckHeader(ref Source);
internal override Boolean CheckHeader(ref Source Source) => Pattern.CheckHeader(ref Source);
internal override Boolean CheckHeader(ref Source Source) => Left.CheckHeader(ref Source) ? true : Right.CheckHeader(ref Source);
/// <summary> /// Checks the first character in the <paramref name="source"/> against the header of this node. /// </summary> /// <remarks> /// This is primarily used to check whether a pattern may exist at the current position. /// </remarks> /// <param name="source">The <see cref="Source"/> to check against.</param> /// <returns><c>true</c> if this <see cref="Pattern"/> may be present, <c>false</c> if definately not.</returns> internal override Boolean CheckHeader(ref Source source) => Left.CheckHeader(ref source);
