public NameToken(NameTokenKind kind, int start, int length, string fullText)
{
Kind = kind;
Start = start;
Length = length;
_fullText = fullText;
}
/// <summary>
/// Require the given token to come next, or throw an exception.
/// </summary>
/// <param name="kind">What kind of token to expect.</param>
/// <param name="errorMessage">The error message, which will have a token position added to it.</param>
private void Expect(NameTokenKind kind, string errorMessage)
{
if (_lexer.Next() == kind)
{
return;
}
throw new NameParseException($"{errorMessage} at character {_lexer.Token.Start}");
}
// generic-part-opt ::= '`' NUMBER | "``" NUMBER |
private int ParseGenericPartOpt(out NameTokenKind kind)
{
switch (_lexer.Next())
{
case NameTokenKind.Backtick:
Expect(NameTokenKind.Number, "Count of generic arguments after `");
kind = NameTokenKind.Backtick;
return(int.Parse(_lexer.Token.Text));
case NameTokenKind.DoubleBacktick:
Expect(NameTokenKind.Number, "Count of generic arguments after ``");
kind = NameTokenKind.DoubleBacktick;
return(int.Parse(_lexer.Token.Text));
default:
_lexer.Unget();
kind = NameTokenKind.Error;
return(0);
}
}
