/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Ajax.org Code Editor (ACE).
 *
 * The Initial Developer of the Original Code is
 * Ajax.org B.V.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *      Fabian Jakobs <fabian AT ajax DOT org>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

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

var lang = require("../lib/lang");

var TextHighlightRules = function() {

    // regexp must not have capturing parentheses
    // regexps are ordered -> the first match is used

    this.$rules = {
        "start" : [{
            token : "empty_line",
            regex : '^$'
        }, {
            token : "text",
            regex : ".+"
        }]
    };
};

(function() {

    this.addRules = function(rules, prefix) {
        for (var key in rules) {
            var state = rules[key];
            for (var i=0; i<state.length; i++) {
                var rule = state[i];
                if (rule.next) {
                    rule.next = prefix + rule.next;
                }
            }
            this.$rules[prefix + key] = state;
        }
    };

    this.getRules = function() {
        return this.$rules;
    };
    
    this.embedRules = function (HighlightRules, prefix, escapeRules, states) {
        var embedRules = new HighlightRules().getRules();
        if (states) {
            for (var i = 0; i < states.length; i++) {
                states[i] = prefix + states[i];
            }
        } else {
            states = [];
            for (var key in embedRules) {
                states.push(prefix + key);
            }
        }
        this.addRules(embedRules, prefix);
        
        for (var i = 0; i < states.length; i++) {
            Array.prototype.unshift.apply(this.$rules[states[i]], lang.deepCopy(escapeRules));
        }
        
        if (!this.$embeds) {
            this.$embeds = [];
        }
        this.$embeds.push(prefix);
    }
    
    this.getEmbeds = function() {
        return this.$embeds;
    }

}).call(TextHighlightRules.prototype);

exports.TextHighlightRules = TextHighlightRules;
});