/* ***** 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 lang = require("../lib/lang");
var CssHighlightRules = require("./css_highlight_rules").CssHighlightRules;
var JavaScriptHighlightRules = require("./javascript_highlight_rules").JavaScriptHighlightRules;
var xmlUtil = require("./xml_util");
var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;

var tagMap = lang.createMap({
    a           : 'anchor',
    button 	    : 'form',
    form        : 'form',
    img         : 'image',
    input       : 'form',
    label       : 'form',
    script      : 'script',
    select      : 'form',
    textarea    : 'form',
    style       : 'style',
    table       : 'table',
    tbody       : 'table',
    td          : 'table',
    tfoot       : 'table',
    th          : 'table',
    tr          : 'table'
});

var HtmlHighlightRules = function() {

    // regexp must not have capturing parentheses
    // regexps are ordered -> the first match is used
    this.$rules = {
        start : [{
            token : "text",
            merge : true,
            regex : "<\\!\\[CDATA\\[",
            next : "cdata"
        }, {
            token : "xml-pe",
            regex : "<\\?.*?\\?>"
        }, {
            token : "comment",
            merge : true,
            regex : "<\\!--",
            next : "comment"
        }, {
            token : "xml-pe",
            regex : "<\\!.*?>"
        }, {
            token : "meta.tag",
            regex : "<(?=script\\b)",
            next : "script"
        }, {
            token : "meta.tag",
            regex : "<(?=style\\b)",
            next : "style"
        }, {
            token : "meta.tag", // opening tag
            regex : "<\\/?",
            next : "tag"
        }, {
            token : "text",
            regex : "\\s+"
        }, {
            token : "constant.character.entity",
            regex : "(?:&#[0-9]+;)|(?:&#x[0-9a-fA-F]+;)|(?:&[a-zA-Z0-9_:\\.-]+;)"
        }, {
            token : "text",
            regex : "[^<]+"
        } ],
    
        cdata : [ {
            token : "text",
            regex : "\\]\\]>",
            next : "start"
        }, {
            token : "text",
            merge : true,
            regex : "\\s+"
        }, {
            token : "text",
            merge : true,
            regex : ".+"
        } ],

        comment : [ {
            token : "comment",
            regex : ".*?-->",
            next : "start"
        }, {
            token : "comment",
            merge : true,
            regex : ".+"
        } ]
    };
    
    xmlUtil.tag(this.$rules, "tag", "start", tagMap);
    xmlUtil.tag(this.$rules, "style", "css-start", tagMap);
    xmlUtil.tag(this.$rules, "script", "js-start", tagMap);
    
    this.embedRules(JavaScriptHighlightRules, "js-", [{
        token: "comment",
        regex: "\\/\\/.*(?=<\\/script>)",
        next: "tag"
    }, {
        token: "meta.tag",
        regex: "<\\/(?=script)",
        next: "tag"
    }]);
    
    this.embedRules(CssHighlightRules, "css-", [{
        token: "meta.tag",
        regex: "<\\/(?=style)",
        next: "tag"
    }]);
};

oop.inherits(HtmlHighlightRules, TextHighlightRules);

exports.HtmlHighlightRules = HtmlHighlightRules;
});
