Ejemplo n.º 1
0
        public TokenizerResult Tokenize(ITracker tracker)
        {
            if (PreviousType != Token.TokenType.NA && ((tracker.Before?.Type ?? Token.TokenType.None) & PreviousType) == Token.TokenType.NA)
            {
                return(TokenizerResult.Failure);
            }

            // TODO don't consume it here
            tracker.Consume(1); // First Char is guaranteed to be Symbol by Selector

            string text    = "";
            bool   escaped = false;

            while (true)
            {
                if (!tracker.Read(out char c))
                {
                    tracker.AddError("String not closed", 2, new TextRegion(tracker.InitialIndex));
                    tracker.Consume(1); // TODO don't consume it here
                    return(TokenizerResult.Failure);
                }
                tracker.Consume(1); // TODO don't consume it here

                if (escaped)
                {
                    text   += c;
                    escaped = false;
                    continue;
                }
                else if (c == Symbol)
                {
                    Token t = new Token(new TextRegion(tracker.InitialIndex, tracker.Index), text, Name, Type);

                    tracker.AddToken(t);

                    return(TokenizerResult.Success);
                }
                else if (c == escapeChar)
                {
                    escaped = true;
                }
                else
                {
                    text += c;
                }
            }
        }