/* ***** BEGIN LICENSE BLOCK *****
 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * 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
 * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ***** END LICENSE BLOCK ***** */

define(function (require, exports, module) {
    "use strict";

    var oop = require("../lib/oop");
    var TextMode = require("./text").Mode;
    var RubyHighlightRules = require("./ruby_highlight_rules").RubyHighlightRules;
    var MatchingBraceOutdent = require("./matching_brace_outdent").MatchingBraceOutdent;
    var Range = require("../range").Range;
    var CstyleBehaviour = require("./behaviour/cstyle").CstyleBehaviour;
    var FoldMode = require("./folding/coffee").FoldMode;

    var Mode = function () {
        this.HighlightRules = RubyHighlightRules;
        this.$outdent = new MatchingBraceOutdent();
        this.$behaviour = new CstyleBehaviour();
        this.foldingRules = new FoldMode();
    };
    oop.inherits(Mode, TextMode);

    (function () {


        this.lineCommentStart = "#";

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

            var tokenizedLine = this.getTokenizer().getLineTokens(line, state);
            var tokens = tokenizedLine.tokens;

            if (tokens.length && tokens[tokens.length - 1].type == "comment") {
                return indent;
            }

            if (state == "start") {
                var match = line.match(/^.*[\{\(\[]\s*$/);
                var startingClassOrMethod = line.match(/^\s*(class|def|module)\s.*$/);
                var startingDoBlock = line.match(/.*do(\s*|\s+\|.*\|\s*)$/);
                var startingConditional = line.match(/^\s*(if|else|when)\s*/)
                if (match || startingClassOrMethod || startingDoBlock || startingConditional) {
                    indent += tab;
                }
            }

            return indent;
        };

        this.checkOutdent = function (state, line, input) {
            return /^\s+(end|else)$/.test(line + input) || this.$outdent.checkOutdent(line, input);
        };

        this.autoOutdent = function (state, session, row) {
            var line = session.getLine(row);
            if (/}/.test(line))
                return this.$outdent.autoOutdent(session, row);
            var indent = this.$getIndent(line);
            var prevLine = session.getLine(row - 1);
            var prevIndent = this.$getIndent(prevLine);
            var tab = session.getTabString();
            if (prevIndent.length <= indent.length) {
                if (indent.slice(-tab.length) == tab)
                    session.remove(new Range(row, indent.length - tab.length, row, indent.length));
            }
        };

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

    exports.Mode = Mode;
});
