/*! HTML - v0.12.1 - 2014-10-22
* http://nbubna.github.io/HTML/
* Copyright (c) 2014 ESHA Research; Licensed MIT, GPL */
(function(document, _) {
    "use strict";

    var add = _.fn.add;
    add.create = function(node, code, ref) {
        var parts = code.match(add.emmetRE()).filter(Boolean),
            root = document.createDocumentFragment(),
            el = document.createElement(parts[0]);
        root.appendChild(el);
        for (var i=1,m=parts.length; i<m; i++) {
            var part = parts[i];
            el = add.emmet[part.charAt(0)].call(el, part.substr(1), root) || el;
        }
        add.insert(node, root, ref);
        return el;
    };
    add.emmetRE = function() {
        var m = Object.keys(add.emmet).join('');
        var regex = '[a-z'+m+']{0,1}(?:"[^"]*"|[^"'+m+']){0,}';
        return new RegExp(regex, 'g');
    };
    add.emmet = {
        '#': function(id) {
            this.id = id;
        },
        '.': function(cls) {
            var list = this.getAttribute('class') || '';
            list = list + (list ? ' ' : '') + cls;
            if (list.length) {
                this.setAttribute('class', list);
            }
        },
        '[': function(attrs) {
            attrs = attrs.substr(0, attrs.length-1).match(/(?:[^\s"]+|"[^"]*")+/g);
            for (var i=0,m=attrs.length; i<m; i++) {
                var attr = attrs[i].split('=');
                this.setAttribute(attr[0], (attr[1] || '').replace(/"/g, ''));
            }
        },
        '>': function(tag) {
            if (tag) {
                var el = document.createElement(tag);
                this.appendChild(el);
                return el;
            }
            return this;
        },
        '+': function(tag, root) {
            return add.emmet['>'].call(this.parentNode || root, tag);
        },
        '*': function(count) {
            var parent = this.parentNode,
                els = [this];
            for (var i=1; i<count; i++) {
                els.push(this.cloneNode(true));
                parent.appendChild(els[i]);
            }
            //TODO: numbering for els
            return els;
        },
        '^': function(tag, root) {
            return add.emmet['+'].call(this.parentNode || root, tag, root);
        },
        '{': function(text) {
            this.appendChild(document.createTextNode(text.substr(0, text.length-1)));
        }
    };

})(document, document.documentElement._);