ShaderTools.Hlsl.Parser.HlslLexer.ReadIdentifierOrKeyword C# (CSharp) Method

        private void ReadIdentifierOrKeyword()
        {
            var start = _charReader.Position;

            // Skip first letter
            NextChar();

            // The following characters can be letters, digits the underscore and the dollar sign.

            while (char.IsLetterOrDigit(_charReader.Current) ||
                   _charReader.Current == '_' ||
                   _charReader.Current == '$')
            {
                NextChar();
            }

            var end = _charReader.Position;
            var span = TextSpan.FromBounds(Text, start, end);
            var text = Text.GetText(span);

            _kind = SyntaxFacts.GetKeywordKind(text);

            _contextualKind = (_mode == LexerMode.Directive)
                ? SyntaxFacts.GetPreprocessorKeywordKind(text) 
                : SyntaxFacts.GetContextualKeywordKind(text);

            switch (_kind)
            {
                case SyntaxKind.TrueKeyword:
                    _value = true;
                    break;
                case SyntaxKind.FalseKeyword:
                    _value = false;
                    break;
                default:
                    _value = text;
                    break;
            }
        }
    }