private Lexeme Lexeme(LexemeKind kind, string content = null)
{
if (kind == LexemeKind.NewLine)
{
Column = 0;
Line++;
}
content = content ?? kind.GetCharacter() ?? Buffer.ToString();
Buffer.Clear();
return(new Lexeme(kind, Location, content));
}
private Lexeme Take(LexemeKind lexemeKind, string expected = null, bool ignoreWhitespace = true)
{
if (ignoreWhitespace)
{
SkipWhitespaces();
}
if (Current.Kind != lexemeKind)
{
var lexemeChar = lexemeKind.GetCharacter();
Error($"expected {expected ?? lexemeKind.ToString()}{(lexemeChar != null ? $" '{lexemeChar}'" : "")}, found '{Current.Content}' ({Current.Kind})");
}
return(TakeAny());
}
