private protected override ImmutableSortedSet <Expected <TToken> > CalculateExpected() => ImmutableSortedSet.Create(new Expected <TToken>(Rope.Create(_token)));
/// <summary>
/// Creates a parser which parses and returns one of the specified characters.
/// </summary>
/// <param name="chars">A sequence of characters to choose between</param>
/// <returns>A parser which parses and returns one of the specified characters</returns>
public static Parser <char, char> OneOf(IEnumerable <char> chars)
{
if (chars == null)
{
throw new ArgumentNullException(nameof(chars));
}
var cs = chars.ToArray();
return(Parser <char>
.Token(c => Array.IndexOf(cs, c) != -1)
.WithExpected(ImmutableSortedSet.CreateRange(cs.Select(c => new Expected <char>(Rope.Create(c))))));
}
public CIStringParser(string value)
: base(ImmutableSortedSet.Create(new Expected <char>(Rope.CreateRange(value))))
{
_value = value.ToLowerInvariant();
}
public TokenParser(TToken token)
: base(ImmutableSortedSet.Create(new Expected <TToken>(Rope.Create(token))))
{
_token = token;
}
internal Expected(Rope <TToken> tokens)
{
Label = null;
InternalTokens = tokens;
}
internal Expected(string label)
{
Label = label;
InternalTokens = null;
}
public SequenceTokenParser(TEnumerable value)
: base(ImmutableSortedSet.Create(new Expected <TToken>(Rope.CreateRange(value))))
{
_value = value;
_valueTokens = value.ToArray();
}
private protected override ImmutableSortedSet <Expected <char> > CalculateExpected() => ImmutableSortedSet.Create(new Expected <char>(Rope.CreateRange(_value)));