public override ReadResult <Terminal> Read(ITextScanner scanner)
{
if (scanner == null)
{
throw new ArgumentNullException(nameof(scanner));
}
var context = scanner.GetContext();
MatchResult result = null;
// ReSharper disable once ForCanBeConvertedToForeach
for (var i = 0; i < valueRange.Length; i++)
{
var c = valueRange[i];
result = scanner.TryMatch(c);
if (result.EndOfInput)
{
return(ReadResult <Terminal> .FromSyntaxError(SyntaxError.FromMatchResult(result, context)));
}
if (result.Success)
{
return(ReadResult <Terminal> .FromResult(new Terminal(result.Text, context)));
}
}
Debug.Assert(result != null, "result != null");
return(ReadResult <Terminal> .FromSyntaxError(SyntaxError.FromMatchResult(result, context)));
}
protected override IEnumerable<Terminal> ReadImpl(ITextScanner scanner, ITextContext context)
{
if (scanner.Peek() == -1)
{
return Empty;
}
var result = scanner.TryMatch(terminal, comparer);
if (result.IsMatch)
{
return new[] { new Terminal(result.Text, context) };
}
return Empty;
}
public override ReadResult <Terminal> Read(ITextScanner scanner)
{
if (scanner == null)
{
throw new ArgumentNullException(nameof(scanner));
}
var context = scanner.GetContext();
var result = scanner.TryMatch(terminal, comparer);
if (result.Success)
{
return(ReadResult <Terminal> .FromResult(new Terminal(result.Text, context)));
}
return(ReadResult <Terminal> .FromSyntaxError(SyntaxError.FromMatchResult(result, context)));
}
protected override IEnumerable <Terminal> ReadImpl(ITextScanner scanner, ITextContext context)
{
if (scanner.Peek() == -1)
{
return(Empty);
}
// ReSharper disable once ForCanBeConvertedToForeach
for (var i = 0; i < valueRange.Length; i++)
{
var c = valueRange[i];
var result = scanner.TryMatch(c);
if (result.IsMatch)
{
return(new[] { new Terminal(result.Text, context) });
}
}
return(Empty);
}
