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 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Ajax.org B.V. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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define(function (require, exports, module) {
    "use strict";

    var Rules = require("./coffee_highlight_rules").CoffeeHighlightRules;
    var Outdent = require("./matching_brace_outdent").MatchingBraceOutdent;
    var FoldMode = require("./folding/coffee").FoldMode;
    var Range = require("../range").Range;
    var TextMode = require("./text").Mode;
    var WorkerClient = require("../worker/worker_client").WorkerClient;
    var oop = require("../lib/oop");

    function Mode() {
        this.HighlightRules = Rules;
        this.$outdent = new Outdent();
        this.foldingRules = new FoldMode();
    }

    oop.inherits(Mode, TextMode);

    (function () {

        /*:
         [({[=:]        # Opening parentheses or brackets
         |[-=]>          # OR single or double arrow
         |\b(?:          # OR one of these words:
         else          #    else
         |try           # OR try
         |(?:swi|ca)tch # OR catch, optionally followed by:
         (?:\s*[$A-Za-z_\x7f-\uffff][$\w\x7f-\uffff]*)?  # a variable
         |finally       # OR finally
         ))\s*$          # all as the last thing on a line (allowing trailing space)
         |                # ---- OR ---- :
         ^\s*             # a line starting with optional space
         (else\b\s*)?     # followed by an optional "else"
         (?:              # followed by one of the following:
         if            #    if
         |for           # OR for
         |while         # OR while
         |loop          # OR loop
         )\b              #    (as a word)
         (?!.*\bthen\b)   # ... but NOT followed by "then" on the line
         */
        var indenter = /(?:[({[=:]|[-=]>|\b(?:else|try|(?:swi|ca)tch(?:\s+[$A-Za-z_\x7f-\uffff][$\w\x7f-\uffff]*)?|finally))\s*$|^\s*(else\b\s*)?(?:if|for|while|loop)\b(?!.*\bthen\b)/;

        this.lineCommentStart = "#";
        this.blockComment = {start: "###", end: "###"};

        this.getNextLineIndent = function (state, line, tab) {
            var indent = this.$getIndent(line);
            var tokens = this.getTokenizer().getLineTokens(line, state).tokens;

            if (!(tokens.length && tokens[tokens.length - 1].type === 'comment') &&
                state === 'start' && indenter.test(line))
                indent += tab;
            return indent;
        };

        this.checkOutdent = function (state, line, input) {
            return this.$outdent.checkOutdent(line, input);
        };

        this.autoOutdent = function (state, doc, row) {
            this.$outdent.autoOutdent(doc, row);
        };

        this.createWorker = function (session) {
            var worker = new WorkerClient(["ace"], "ace/mode/coffee_worker", "Worker");
            worker.attachToDocument(session.getDocument());

            worker.on("annotate", function (e) {
                session.setAnnotations(e.data);
            });

            worker.on("terminate", function () {
                session.clearAnnotations();
            });

            return worker;
        };

        this.$id = "ace/mode/coffee";
    }).call(Mode.prototype);

    exports.Mode = Mode;

});
