public override ILexer <FieldVisibleCharacter> Create()
{
var innerLexer = Alternation.Create(
VisibleCharacterLexerFactory.Create(),
ObsoleteTextLexerFactory.Create());
return(new FieldVisibleCharacterLexer(innerLexer));
}
public override ILexer <QuotedPair> Create()
{
var htab = HorizontalTabLexerFactory.Create();
var sp = SpaceLexerFactory.Create();
var vchar = VisibleCharacterLexerFactory.Create();
var obsText = ObsoleteTextLexerFactory.Create();
var innerLexer = Concatenation.Create(
Terminal.Create(@"\", StringComparer.Ordinal),
Alternation.Create(htab, sp, vchar, obsText));
return(new QuotedPairLexer(innerLexer));
}
public override ILexer <CommentText> Create()
{
var innerLexer = Alternation.Create(
HorizontalTabLexerFactory.Create(),
SpaceLexerFactory.Create(),
ValueRange.Create(0x21, 0x27, Encoding.UTF8),
ValueRange.Create(0x2A, 0x5B, Encoding.UTF8),
ValueRange.Create(0x5D, 0x7E, Encoding.UTF8),
ObsoleteTextLexerFactory.Create());
return(new CommentTextLexer(innerLexer));
}
public override ILexer <QuotedText> Create()
{
var innerLexer = Alternation.Create(
HorizontalTabLexerFactory.Create(),
SpaceLexerFactory.Create(),
Terminal.Create(@"!", StringComparer.Ordinal),
ValueRange.Create(0x23, 0x5B, Encoding.UTF8),
ValueRange.Create(0x5D, 0x7E, Encoding.UTF8),
ObsoleteTextLexerFactory.Create());
return(new QuotedTextLexer(innerLexer));
}
public override ILexer <ReasonPhrase> Create()
{
var innerLexer = Repetition.Create(
Alternation.Create(
HorizontalTabLexerFactory.Create(),
SpaceLexerFactory.Create(),
VisibleCharacterLexerFactory.Create(),
ObsoleteTextLexerFactory.Create()),
0,
int.MaxValue);
return(new ReasonPhraseLexer(innerLexer));
}