Function tokenLexer

mini-code-edit/cm/mode/coffeescript/coffeescript.js:249–310

(stream, state)

    }

    function tokenLexer(stream, state) {
        var style = state.tokenize(stream, state);
        var current = stream.current();

        // Handle '.' connected identifiers
        if (current === '.') {
            style = state.tokenize(stream, state);
            current = stream.current();
            if (style === 'variable') {
                return 'variable';
            } else {
                return ERRORCLASS;
            }
        }

        // Handle properties
        if (current === '@') {
            stream.eat('@');
            return 'keyword';
        }

        // Handle scope changes.
        if (current === 'return') {
            state.dedent += 1;
        }
        if (((current === '->' || current === '=>') &&
                  !state.lambda &&
                  state.scopes[0].type == 'coffee' &&
                  stream.peek() === '')
               || style === 'indent') {
            indent(stream, state);
        }
        var delimiter_index = '[({'.indexOf(current);
        if (delimiter_index !== -1) {
            indent(stream, state, '])}'.slice(delimiter_index, delimiter_index+1));
        }
        if (indentKeywords.exec(current)){
            indent(stream, state);
        }
        if (current == 'then'){
            dedent(stream, state);
        }


        if (style === 'dedent') {
            if (dedent(stream, state)) {
                return ERRORCLASS;
            }
        }
        delimiter_index = '])}'.indexOf(current);
        if (delimiter_index !== -1) {
            if (dedent(stream, state)) {
                return ERRORCLASS;
            }
        }
        if (state.dedent > 0 && stream.eol() && state.scopes[0].type == 'coffee') {
            if (state.scopes.length > 1) state.scopes.shift();
            state.dedent -= 1;