/*!
 * froala_editor v2.4.2 (https://www.froala.com/wysiwyg-editor)
 * License https://froala.com/wysiwyg-editor/terms/
 * Copyright 2014-2017 Froala Labs
 */

(function (factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define(['jquery'], factory);
    } else if (typeof module === 'object' && module.exports) {
        // Node/CommonJS
        module.exports = function( root, jQuery ) {
            if ( jQuery === undefined ) {
                // require('jQuery') returns a factory that requires window to
                // build a jQuery instance, we normalize how we use modules
                // that require this pattern but the window provided is a noop
                // if it's defined (how jquery works)
                if ( typeof window !== 'undefined' ) {
                    jQuery = require('jquery');
                }
                else {
                    jQuery = require('jquery')(root);
                }
            }
            factory(jQuery);
            return jQuery;
        };
    } else {
        // Browser globals
        factory(jQuery);
    }
}(function ($) {

  

  $.FE.PLUGINS.codeBeautifier = function () {
    /**
     * HTML BEAUTIFIER
     *
     * LICENSE: The MIT License (MIT)
     *
     * Written by Nochum Sossonko, (nsossonko@hotmail.com)
     *
     * Based on code initially developed by: Einar Lielmanis, <einar@jsbeautifier.org>
     * http://jsbeautifier.org/
     *
     */
    /* jshint ignore:start */
    /* jscs:disable */


    var acorn = {};
    (function(exports) {
        /* jshint curly: false */
        // This section of code is taken from acorn.
        //
        // Acorn was written by Marijn Haverbeke and released under an MIT
        // license. The Unicode regexps (for identifiers and whitespace) were
        // taken from [Esprima](http://esprima.org) by Ariya Hidayat.
        //
        // Git repositories for Acorn are available at
        //
        //     http://marijnhaverbeke.nl/git/acorn
        //     https://github.com/marijnh/acorn.git

        // ## Character categories

        // Big ugly regular expressions that match characters in the
        // whitespace, identifier, and identifier-start categories. These
        // are only applied when a character is found to actually have a
        // code point above 128.

        var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
        var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
        var nonASCIIidentifierChars = "\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
        var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
        var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

        // Whether a single character denotes a newline.

        exports.newline = /[\n\r\u2028\u2029]/;

        // Matches a whole line break (where CRLF is considered a single
        // line break). Used to count lines.

        // in javascript, these two differ
        // in python they are the same, different methods are called on them
        exports.lineBreak = new RegExp('\r\n|' + exports.newline.source);
        exports.allLineBreaks = new RegExp(exports.lineBreak.source, 'g');


        // Test whether a given character code starts an identifier.

        exports.isIdentifierStart = function(code) {
            // permit $ (36) and @ (64). @ is used in ES7 decorators.
            if (code < 65) return code === 36 || code === 64;
            // 65 through 91 are uppercase letters.
            if (code < 91) return true;
            // permit _ (95).
            if (code < 97) return code === 95;
            // 97 through 123 are lowercase letters.
            if (code < 123) return true;
            return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
        };

        // Test whether a given character is part of an identifier.

        exports.isIdentifierChar = function(code) {
            if (code < 48) return code === 36;
            if (code < 58) return true;
            if (code < 65) return false;
            if (code < 91) return true;
            if (code < 97) return code === 95;
            if (code < 123) return true;
            return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));
        };
    })(acorn);

    function run (html_source, options) {
      function ltrim(s) {
        return s.replace(/^\s+/g, '');
      }

      function rtrim(s) {
        return s.replace(/\s+$/g, '');
      }

      var multi_parser;
      var indent_inner_html;
      var indent_size;
      var indent_character;
      var wrap_line_length;
      var brace_style;
      var unformatted;
      var preserve_newlines;
      var max_preserve_newlines;
      var indent_handlebars;
      var wrap_attributes;
      var wrap_attributes_indent_size;
      var end_with_newline;
      var extra_liners;

      options = options || {};

      // backwards compatibility to 1.3.4
      if ((options.wrap_line_length === undefined || parseInt(options.wrap_line_length, 10) === 0) &&
        (options.max_char !== undefined && parseInt(options.max_char, 10) !== 0)) {
        options.wrap_line_length = options.max_char;
      }

      indent_inner_html = (options.indent_inner_html === undefined) ? false : options.indent_inner_html;
      indent_size = (options.indent_size === undefined) ? 4 : parseInt(options.indent_size, 10);
      indent_character = (options.indent_char === undefined) ? ' ' : options.indent_char;
      brace_style = (options.brace_style === undefined) ? 'collapse' : options.brace_style;
      wrap_line_length = parseInt(options.wrap_line_length, 10) === 0 ? 32786 : parseInt(options.wrap_line_length || 250, 10);
      unformatted = options.unformatted || ['a', 'span', 'img', 'bdo', 'em', 'strong', 'dfn', 'code', 'samp', 'kbd',
        'var', 'cite', 'abbr', 'acronym', 'q', 'sub', 'sup', 'tt', 'i', 'b', 'big', 'small', 'u', 's', 'strike',
        'font', 'ins', 'del', 'address', 'pre'
      ];
      preserve_newlines = (options.preserve_newlines === undefined) ? true : options.preserve_newlines;
      max_preserve_newlines = preserve_newlines ?
        (isNaN(parseInt(options.max_preserve_newlines, 10)) ? 32786 : parseInt(options.max_preserve_newlines, 10)) : 0;
      indent_handlebars = (options.indent_handlebars === undefined) ? false : options.indent_handlebars;
      wrap_attributes = (options.wrap_attributes === undefined) ? 'auto' : options.wrap_attributes;
      wrap_attributes_indent_size = (options.wrap_attributes_indent_size === undefined) ? indent_size : parseInt(options.wrap_attributes_indent_size, 10) || indent_size;
      end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
      extra_liners = Array.isArray(options.extra_liners) ?
        options.extra_liners.concat() : (typeof options.extra_liners == 'string') ?
        options.extra_liners.split(',') : 'head,body,/html'.split(',');

      if (options.indent_with_tabs) {
        indent_character = '\t';
        indent_size = 1;
      }

      function Parser() {

        this.pos = 0; //Parser position
        this.token = '';
        this.current_mode = 'CONTENT'; //reflects the current Parser mode: TAG/CONTENT
        this.tags = { //An object to hold tags, their position, and their parent-tags, initiated with default values
          parent: 'parent1',
          parentcount: 1,
          parent1: ''
        };
        this.tag_type = '';
        this.token_text = this.last_token = this.last_text = this.token_type = '';
        this.newlines = 0;
        this.indent_content = indent_inner_html;

        this.Utils = { //Uilities made available to the various functions
          whitespace: "\n\r\t ".split(''),
          single_token: 'br,input,link,meta,source,!doctype,basefont,base,area,hr,wbr,param,img,isindex,embed'.split(','), //all the single tags for HTML
          extra_liners: extra_liners, //for tags that need a line of whitespace before them
          in_array: function(what, arr) {
            for (var i = 0; i < arr.length; i++) {
              if (what == arr[i]) {
                return true;
              }
            }
            return false;
          }
        };

        // Return true if the given text is composed entirely of whitespace.
        this.is_whitespace = function(text) {
          for (var n = 0; n < text.length; text++) {
            if (!this.Utils.in_array(text.charAt(n), this.Utils.whitespace)) {
              return false;
            }
          }
          return true;
        };

        this.traverse_whitespace = function() {
          var input_char = '';

          input_char = this.input.charAt(this.pos);
          if (this.Utils.in_array(input_char, this.Utils.whitespace)) {
            this.newlines = 0;
            while (this.Utils.in_array(input_char, this.Utils.whitespace)) {
              if (preserve_newlines && input_char == '\n' && this.newlines <= max_preserve_newlines) {
                this.newlines += 1;
              }

              this.pos++;
              input_char = this.input.charAt(this.pos);
            }
            return true;
          }
          return false;
        };

        // Append a space to the given content (string array) or, if we are
        // at the wrap_line_length, append a newline/indentation.
        this.space_or_wrap = function(content) {
          if (this.line_char_count >= this.wrap_line_length) { //insert a line when the wrap_line_length is reached
            this.print_newline(false, content);
            this.print_indentation(content);
          } else {
            this.line_char_count++;
            content.push(' ');
          }
        };

        this.get_content = function() { //function to capture regular content between tags
          var input_char = '',
              content = [];

          while (this.input.charAt(this.pos) != '<') {
            if (this.pos >= this.input.length) {
              return content.length ? content.join('') : ['', 'TK_EOF'];
            }

            if (this.traverse_whitespace()) {
              this.space_or_wrap(content);
              continue;
            }

            if (indent_handlebars) {
              // Handlebars parsing is complicated.
              // {{#foo}} and {{/foo}} are formatted tags.
              // {{something}} should get treated as content, except:
              // {{else}} specifically behaves like {{#if}} and {{/if}}
              var peek3 = this.input.substr(this.pos, 3);
              if (peek3 == '{{#' || peek3 == '{{/') {
                // These are tags and not content.
                break;
              } else if (peek3 == '{{!') {
                return [this.get_tag(), 'TK_TAG_HANDLEBARS_COMMENT'];
              } else if (this.input.substr(this.pos, 2) == '{{') {
                if (this.get_tag(true) == '{{else}}') {
                  break;
                }
              }
            }

            input_char = this.input.charAt(this.pos);
            this.pos++;
            this.line_char_count++;
            content.push(input_char); //letter at-a-time (or string) inserted to an array
          }
          return content.length ? content.join('') : '';
        };

        this.get_contents_to = function(name) { //get the full content of a script or style to pass to js_beautify
          if (this.pos == this.input.length) {
            return ['', 'TK_EOF'];
          }
          var content = '';
          var reg_match = new RegExp('</' + name + '\\s*>', 'igm');
          reg_match.lastIndex = this.pos;
          var reg_array = reg_match.exec(this.input);
          var end_script = reg_array ? reg_array.index : this.input.length; //absolute end of script
          if (this.pos < end_script) { //get everything in between the script tags
            content = this.input.substring(this.pos, end_script);
            this.pos = end_script;
          }
          return content;
        };

        this.record_tag = function(tag) { //function to record a tag and its parent in this.tags Object
          if (this.tags[tag + 'count']) { //check for the existence of this tag type
            this.tags[tag + 'count']++;
            this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
          } else { //otherwise initialize this tag type
            this.tags[tag + 'count'] = 1;
            this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
          }
          this.tags[tag + this.tags[tag + 'count'] + 'parent'] = this.tags.parent; //set the parent (i.e. in the case of a div this.tags.div1parent)
          this.tags.parent = tag + this.tags[tag + 'count']; //and make this the current parent (i.e. in the case of a div 'div1')
        };

        this.retrieve_tag = function(tag) { //function to retrieve the opening tag to the corresponding closer
          if (this.tags[tag + 'count']) { //if the openener is not in the Object we ignore it
            var temp_parent = this.tags.parent; //check to see if it's a closable tag.
            while (temp_parent) { //till we reach '' (the initial value);
              if (tag + this.tags[tag + 'count'] == temp_parent) { //if this is it use it
                break;
              }
              temp_parent = this.tags[temp_parent + 'parent']; //otherwise keep on climbing up the DOM Tree
            }
            if (temp_parent) { //if we caught something
              this.indent_level = this.tags[tag + this.tags[tag + 'count']]; //set the indent_level accordingly
              this.tags.parent = this.tags[temp_parent + 'parent']; //and set the current parent
            }
            delete this.tags[tag + this.tags[tag + 'count'] + 'parent']; //delete the closed tags parent reference...
            delete this.tags[tag + this.tags[tag + 'count']]; //...and the tag itself
            if (this.tags[tag + 'count'] == 1) {
              delete this.tags[tag + 'count'];
            } else {
              this.tags[tag + 'count']--;
            }
          }
        };

        this.indent_to_tag = function(tag) {
          // Match the indentation level to the last use of this tag, but don't remove it.
          if (!this.tags[tag + 'count']) {
            return;
          }
          var temp_parent = this.tags.parent;
          while (temp_parent) {
            if (tag + this.tags[tag + 'count'] == temp_parent) {
              break;
            }
            temp_parent = this.tags[temp_parent + 'parent'];
          }
          if (temp_parent) {
            this.indent_level = this.tags[tag + this.tags[tag + 'count']];
          }
        };

        this.get_tag = function(peek) { //function to get a full tag and parse its type
          var input_char = '',
            content = [],
            comment = '',
            space = false,
            first_attr = true,
            tag_start, tag_end,
            tag_start_char,
            orig_pos = this.pos,
            orig_line_char_count = this.line_char_count;

          peek = peek !== undefined ? peek : false;

          do {
            if (this.pos >= this.input.length) {
              if (peek) {
                this.pos = orig_pos;
                this.line_char_count = orig_line_char_count;
              }
              return content.length ? content.join('') : ['', 'TK_EOF'];
            }

            input_char = this.input.charAt(this.pos);
            this.pos++;

            if (this.Utils.in_array(input_char, this.Utils.whitespace)) { //don't want to insert unnecessary space
              space = true;
              continue;
            }

            if (input_char == "'" || input_char == '"') {
              input_char += this.get_unformatted(input_char);
              space = true;

            }

            if (input_char == '=') { //no space before =
              space = false;
            }

            if (content.length && content[content.length - 1] != '=' && input_char != '>' && space) {
              //no space after = or before >
              this.space_or_wrap(content);
              space = false;
              if (!first_attr && wrap_attributes == 'force' && input_char != '/') {
                this.print_newline(true, content);
                this.print_indentation(content);
                for (var count = 0; count < wrap_attributes_indent_size; count++) {
                  content.push(indent_character);
                }
              }
              for (var i = 0; i < content.length; i++) {
                if (content[i] == ' ') {
                  first_attr = false;
                  break;
                }
              }
            }

            if (indent_handlebars && tag_start_char == '<') {
              // When inside an angle-bracket tag, put spaces around
              // handlebars not inside of strings.
              if ((input_char + this.input.charAt(this.pos)) == '{{') {
                input_char += this.get_unformatted('}}');
                if (content.length && content[content.length - 1] != ' ' && content[content.length - 1] != '<') {
                  input_char = ' ' + input_char;
                }
                space = true;
              }
            }

            if (input_char == '<' && !tag_start_char) {
              tag_start = this.pos - 1;
              tag_start_char = '<';
            }

            if (indent_handlebars && !tag_start_char) {
              if (content.length >= 2 && content[content.length - 1] == '{' && content[content.length - 2] == '{') {
                if (input_char == '#' || input_char == '/' || input_char == '!') {
                  tag_start = this.pos - 3;
                } else {
                  tag_start = this.pos - 2;
                }
                tag_start_char = '{';
              }
            }

            this.line_char_count++;
            content.push(input_char); //inserts character at-a-time (or string)

            if (content[1] && (content[1] == '!' || content[1] == '?' || content[1] == '%')) { //if we're in a comment, do something special
              // We treat all comments as literals, even more than preformatted tags
              // we just look for the appropriate close tag
              content = [this.get_comment(tag_start)];
              break;
            }

            if (indent_handlebars && content[1] && content[1] == '{' && content[2] && content[2] == '!') { //if we're in a comment, do something special
              // We treat all comments as literals, even more than preformatted tags
              // we just look for the appropriate close tag
              content = [this.get_comment(tag_start)];
              break;
            }

            if (indent_handlebars && tag_start_char == '{' && content.length > 2 && content[content.length - 2] == '}' && content[content.length - 1] == '}') {
              break;
            }
          } while (input_char != '>');

          var tag_complete = content.join('');
          var tag_index;
          var tag_offset;

          if (tag_complete.indexOf(' ') != -1) { //if there's whitespace, thats where the tag name ends
            tag_index = tag_complete.indexOf(' ');
          } else if (tag_complete[0] == '{') {
            tag_index = tag_complete.indexOf('}');
          } else { //otherwise go with the tag ending
            tag_index = tag_complete.indexOf('>');
          }
          if (tag_complete[0] == '<' || !indent_handlebars) {
            tag_offset = 1;
          } else {
            tag_offset = tag_complete[2] == '#' ? 3 : 2;
          }
          var tag_check = tag_complete.substring(tag_offset, tag_index).toLowerCase();
          if (tag_complete.charAt(tag_complete.length - 2) == '/' ||
            this.Utils.in_array(tag_check, this.Utils.single_token)) { //if this tag name is a single tag type (either in the list or has a closing /)
            if (!peek) {
              this.tag_type = 'SINGLE';
            }
          } else if (indent_handlebars && tag_complete[0] == '{' && tag_check == 'else') {
            if (!peek) {
              this.indent_to_tag('if');
              this.tag_type = 'HANDLEBARS_ELSE';
              this.indent_content = true;
              this.traverse_whitespace();
            }
          } else if (this.is_unformatted(tag_check, unformatted)) { // do not reformat the "unformatted" tags
            comment = this.get_unformatted('</' + tag_check + '>', tag_complete); //...delegate to get_unformatted function
            content.push(comment);
            tag_end = this.pos - 1;
            this.tag_type = 'SINGLE';
          } else if (tag_check == 'script' &&
            (tag_complete.search('type') == -1 ||
              (tag_complete.search('type') > -1 &&
                tag_complete.search(/\b(text|application)\/(x-)?(javascript|ecmascript|jscript|livescript)/) > -1))) {
            if (!peek) {
              this.record_tag(tag_check);
              this.tag_type = 'SCRIPT';
            }
          } else if (tag_check == 'style' &&
            (tag_complete.search('type') == -1 ||
              (tag_complete.search('type') > -1 && tag_complete.search('text/css') > -1))) {
            if (!peek) {
              this.record_tag(tag_check);
              this.tag_type = 'STYLE';
            }
          } else if (tag_check.charAt(0) == '!') { //peek for <! comment
            // for comments content is already correct.
            if (!peek) {
              this.tag_type = 'SINGLE';
              this.traverse_whitespace();
            }
          } else if (!peek) {
            if (tag_check.charAt(0) == '/') { //this tag is a double tag so check for tag-ending
              this.retrieve_tag(tag_check.substring(1)); //remove it and all ancestors
              this.tag_type = 'END';
            } else { //otherwise it's a start-tag
              this.record_tag(tag_check); //push it on the tag stack
              if (tag_check.toLowerCase() != 'html') {
                this.indent_content = true;
              }
              this.tag_type = 'START';
            }

            // Allow preserving of newlines after a start or end tag
            if (this.traverse_whitespace()) {
              this.space_or_wrap(content);
            }

            if (this.Utils.in_array(tag_check, this.Utils.extra_liners)) { //check if this double needs an extra line
              this.print_newline(false, this.output);
              if (this.output.length && this.output[this.output.length - 2] != '\n') {
                this.print_newline(true, this.output);
              }
            }
          }

          if (peek) {
            this.pos = orig_pos;
            this.line_char_count = orig_line_char_count;
          }

          return content.join(''); //returns fully formatted tag
        };

        this.get_comment = function(start_pos) { //function to return comment content in its entirety
          // this is will have very poor perf, but will work for now.
          var comment = '',
            delimiter = '>',
            matched = false;

          this.pos = start_pos;
          var input_char = this.input.charAt(this.pos);
          this.pos++;

          while (this.pos <= this.input.length) {
            comment += input_char;

            // only need to check for the delimiter if the last chars match
            if (comment[comment.length - 1] == delimiter[delimiter.length - 1] &&
              comment.indexOf(delimiter) != -1) {
              break;
            }

            // only need to search for custom delimiter for the first few characters
            if (!matched && comment.length < 10) {
              if (comment.indexOf('<![if') === 0) { //peek for <![if conditional comment
                delimiter = '<![endif]>';
                matched = true;
              } else if (comment.indexOf('<![cdata[') === 0) { //if it's a <[cdata[ comment...
                delimiter = ']]>';
                matched = true;
              } else if (comment.indexOf('<![') === 0) { // some other ![ comment? ...
                delimiter = ']>';
                matched = true;
              } else if (comment.indexOf('<!--') === 0) { // <!-- comment ...
                delimiter = '-->';
                matched = true;
              } else if (comment.indexOf('{{!') === 0) { // {{! handlebars comment
                delimiter = '}}';
                matched = true;
              } else if (comment.indexOf('<?') === 0) { // {{! handlebars comment
                delimiter = '?>';
                matched = true;
              } else if (comment.indexOf('<%') === 0) { // {{! handlebars comment
                delimiter = '%>';
                matched = true;
              }
            }

            input_char = this.input.charAt(this.pos);
            this.pos++;
          }

          return comment;
        };

        this.get_unformatted = function(delimiter, orig_tag) { //function to return unformatted content in its entirety

          if (orig_tag && orig_tag.toLowerCase().indexOf(delimiter) != -1) {
            return '';
          }
          var input_char = '';
          var content = '';
          var min_index = 0;
          var space = true;
          do {

            if (this.pos >= this.input.length) {
              return content;
            }

            input_char = this.input.charAt(this.pos);
            this.pos++;

            if (this.Utils.in_array(input_char, this.Utils.whitespace)) {
              if (!space) {
                this.line_char_count--;
                continue;
              }
              if (input_char == '\n' || input_char == '\r') {
                content += '\n';
                /*  Don't change tab indention for unformatted blocks.  If using code for html editing, this will greatly affect <pre> tags if they are specified in the 'unformatted array'
              for (var i=0; i<this.indent_level; i++) {
                content += this.indent_string;
              }
              space = false; //...and make sure other indentation is erased
              */
                this.line_char_count = 0;
                continue;
              }
            }
            content += input_char;
            this.line_char_count++;
            space = true;

            if (indent_handlebars && input_char == '{' && content.length && content[content.length - 2] == '{') {
              // Handlebars expressions in strings should also be unformatted.
              content += this.get_unformatted('}}');
              // These expressions are opaque.  Ignore delimiters found in them.
              min_index = content.length;
            }
          } while (content.toLowerCase().indexOf(delimiter, min_index) == -1);
          return content;
        };

        this.get_token = function() { //initial handler for token-retrieval
          var token;

          if (this.last_token == 'TK_TAG_SCRIPT' || this.last_token == 'TK_TAG_STYLE') { //check if we need to format javascript
            var type = this.last_token.substr(7);
            token = this.get_contents_to(type);
            if (typeof token != 'string') {
              return token;
            }
            return [token, 'TK_' + type];
          }
          if (this.current_mode == 'CONTENT') {
            token = this.get_content();
            if (typeof token != 'string') {
              return token;
            } else {
              return [token, 'TK_CONTENT'];
            }
          }

          if (this.current_mode == 'TAG') {
            token = this.get_tag();
            if (typeof token != 'string') {
              return token;
            } else {
              var tag_name_type = 'TK_TAG_' + this.tag_type;
              return [token, tag_name_type];
            }
          }
        };

        this.get_full_indent = function(level) {
          level = this.indent_level + level || 0;
          if (level < 1) {
            return '';
          }

          return (new Array(level + 1)).join(this.indent_string);
        };

        this.is_unformatted = function(tag_check, unformatted) {
          //is this an HTML5 block-level link?
          if (!this.Utils.in_array(tag_check, unformatted)) {
            return false;
          }

          if (tag_check.toLowerCase() != 'a' || !this.Utils.in_array('a', unformatted)) {
            return true;
          }

          //at this point we have an  tag; is its first child something we want to remain
          //unformatted?
          var next_tag = this.get_tag(true /* peek. */ );

          // test next_tag to see if it is just html tag (no external content)
          var tag = (next_tag || '').match(/^\s*<\s*\/?([a-z]*)\s*[^>]*>\s*$/);

          // if next_tag comes back but is not an isolated tag, then
          // let's treat the 'a' tag as having content
          // and respect the unformatted option
          if (!tag || this.Utils.in_array(tag, unformatted)) {
            return true;
          } else {
            return false;
          }
        };

        this.printer = function(js_source, indent_character, indent_size, wrap_line_length, brace_style) { //handles input/output and some other printing functions

          this.input = js_source || ''; //gets the input for the Parser
          this.output = [];
          this.indent_character = indent_character;
          this.indent_string = '';
          this.indent_size = indent_size;
          this.brace_style = brace_style;
          this.indent_level = 0;
          this.wrap_line_length = wrap_line_length;
          this.line_char_count = 0; //count to see if wrap_line_length was exceeded

          for (var i = 0; i < this.indent_size; i++) {
            this.indent_string += this.indent_character;
          }

          this.print_newline = function(force, arr) {
            this.line_char_count = 0;
            if (!arr || !arr.length) {
              return;
            }
            if (force || (arr[arr.length - 1] != '\n')) { //we might want the extra line
              if ((arr[arr.length - 1] != '\n')) {
                arr[arr.length - 1] = rtrim(arr[arr.length - 1]);
              }
              arr.push('\n');
            }
          };

          this.print_indentation = function(arr) {
            for (var i = 0; i < this.indent_level; i++) {
              arr.push(this.indent_string);
              this.line_char_count += this.indent_string.length;
            }
          };

          this.print_token = function(text) {
            // Avoid printing initial whitespace.
            if (this.is_whitespace(text) && !this.output.length) {
              return;
            }
            if (text || text !== '') {
              if (this.output.length && this.output[this.output.length - 1] == '\n') {
                this.print_indentation(this.output);
                text = ltrim(text);
              }
            }
            this.print_token_raw(text);
          };

          this.print_token_raw = function(text) {
            // If we are going to print newlines, truncate trailing
            // whitespace, as the newlines will represent the space.
            if (this.newlines > 0) {
              text = rtrim(text);
            }

            if (text && text !== '') {
              if (text.length > 1 && text[text.length - 1] == '\n') {
                // unformatted tags can grab newlines as their last character
                this.output.push(text.slice(0, -1));
                this.print_newline(false, this.output);
              } else {
                this.output.push(text);
              }
            }

            for (var n = 0; n < this.newlines; n++) {
              this.print_newline(n > 0, this.output);
            }
            this.newlines = 0;
          };

          this.indent = function() {
            this.indent_level++;
          };

          this.unindent = function() {
            if (this.indent_level > 0) {
              this.indent_level--;
            }
          };
        };
        return this;
      }

      /*_____________________--------------------_____________________*/

      multi_parser = new Parser(); //wrapping functions Parser
      multi_parser.printer(html_source, indent_character, indent_size, wrap_line_length, brace_style); //initialize starting values

      while (true) {
        var t = multi_parser.get_token();
        multi_parser.token_text = t[0];
        multi_parser.token_type = t[1];

        if (multi_parser.token_type == 'TK_EOF') {
          break;
        }

        switch (multi_parser.token_type) {
          case 'TK_TAG_START':
            multi_parser.print_newline(false, multi_parser.output);
            multi_parser.print_token(multi_parser.token_text);
            if (multi_parser.indent_content) {
              multi_parser.indent();
              multi_parser.indent_content = false;
            }
            multi_parser.current_mode = 'CONTENT';
            break;
          case 'TK_TAG_STYLE':
          case 'TK_TAG_SCRIPT':
            multi_parser.print_newline(false, multi_parser.output);
            multi_parser.print_token(multi_parser.token_text);
            multi_parser.current_mode = 'CONTENT';
            break;
          case 'TK_TAG_END':
            // Print new line only if the tag has no content and has child
            if (multi_parser.last_token == 'TK_CONTENT' && multi_parser.last_text === '') {
              var tag_name = multi_parser.token_text.match(/\w+/)[0];
              var tag_extracted_from_last_output = null;
              if (multi_parser.output.length) {
                tag_extracted_from_last_output = multi_parser.output[multi_parser.output.length - 1].match(/(?:<|{{#)\s*(\w+)/);
              }
              if (tag_extracted_from_last_output == null ||
                (tag_extracted_from_last_output[1] != tag_name && !multi_parser.Utils.in_array(tag_extracted_from_last_output[1], unformatted))) {
                multi_parser.print_newline(false, multi_parser.output);
              }
            }
            multi_parser.print_token(multi_parser.token_text);
            multi_parser.current_mode = 'CONTENT';
            break;
          case 'TK_TAG_SINGLE':
            // Don't add a newline before elements that should remain unformatted.
            var tag_check = multi_parser.token_text.match(/^\s*<([a-z-]+)/i);
            if (!tag_check || !multi_parser.Utils.in_array(tag_check[1], unformatted)) {
              multi_parser.print_newline(false, multi_parser.output);
            }
            multi_parser.print_token(multi_parser.token_text);
            multi_parser.current_mode = 'CONTENT';
            break;
          case 'TK_TAG_HANDLEBARS_ELSE':
            multi_parser.print_token(multi_parser.token_text);
            if (multi_parser.indent_content) {
              multi_parser.indent();
              multi_parser.indent_content = false;
            }
            multi_parser.current_mode = 'CONTENT';
            break;
          case 'TK_TAG_HANDLEBARS_COMMENT':
            multi_parser.print_token(multi_parser.token_text);
            multi_parser.current_mode = 'TAG';
            break;
          case 'TK_CONTENT':
            multi_parser.print_token(multi_parser.token_text);
            multi_parser.current_mode = 'TAG';
            break;
          case 'TK_STYLE':
          case 'TK_SCRIPT':
            if (multi_parser.token_text !== '') {
              multi_parser.print_newline(false, multi_parser.output);
              var text = multi_parser.token_text;
              var _beautifier;
              var script_indent_level = 1;

              if (multi_parser.token_type == 'TK_SCRIPT') {
                _beautifier = typeof js_beautify == 'function' && js_beautify;
              } else if (multi_parser.token_type == 'TK_STYLE') {
                _beautifier = typeof css_beautify == 'function' && css_beautify;
              }

              if (options.indent_scripts == 'keep') {
                script_indent_level = 0;
              } else if (options.indent_scripts == 'separate') {
                script_indent_level = -multi_parser.indent_level;
              }

              var indentation = multi_parser.get_full_indent(script_indent_level);
              if (_beautifier) {
                // call the Beautifier if avaliable
                text = _beautifier(text.replace(/^\s*/, indentation), options);
              } else {
                // simply indent the string otherwise
                var white = text.match(/^\s*/)[0];
                var _level = white.match(/[^\n\r]*$/)[0].split(multi_parser.indent_string).length - 1;
                var reindent = multi_parser.get_full_indent(script_indent_level - _level);

                text = text.replace(/^\s*/, indentation)
                  .replace(/\r\n|\r|\n/g, '\n' + reindent)
                  .replace(/\s+$/, '');
              }
              if (text) {
                multi_parser.print_token_raw(text);
                multi_parser.print_newline(true, multi_parser.output);
              }
            }
            multi_parser.current_mode = 'TAG';
            break;
          default:
            // We should not be getting here but we don't want to drop input on the floor
            // Just output the text and move on
            if (multi_parser.token_text !== '') {
              multi_parser.print_token(multi_parser.token_text);
            }
            break;
        }
        multi_parser.last_token = multi_parser.token_type;
        multi_parser.last_text = multi_parser.token_text;
      }
      var sweet_code = multi_parser.output.join('').replace(/[\r\n\t ]+$/, '');
      if (end_with_newline) {
        sweet_code += '\n';
      }
      return sweet_code;
    }

    function css_beautify (source_text, options) {
        var NESTED_AT_RULE = {
            "@page": true,
            "@font-face": true,
            "@keyframes": true,
            // also in CONDITIONAL_GROUP_RULE below
            "@media": true,
            "@supports": true,
            "@document": true
        };
        var CONDITIONAL_GROUP_RULE = {
            "@media": true,
            "@supports": true,
            "@document": true
        };

        options = options || {};
        source_text = source_text || '';
        // HACK: newline parsing inconsistent. This brute force normalizes the input.
        source_text = source_text.replace(/\r\n|[\r\u2028\u2029]/g, '\n')

        var indentSize = options.indent_size || 4;
        var indentCharacter = options.indent_char || ' ';
        var selectorSeparatorNewline = (options.selector_separator_newline === undefined) ? true : options.selector_separator_newline;
        var end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
        var newline_between_rules = (options.newline_between_rules === undefined) ? true : options.newline_between_rules;
        var eol = options.eol ? options.eol : '\n';

        // compatibility
        if (typeof indentSize === "string") {
            indentSize = parseInt(indentSize, 10);
        }

        if(options.indent_with_tabs){
            indentCharacter = '\t';
            indentSize = 1;
        }

        eol = eol.replace(/\\r/, '\r').replace(/\\n/, '\n')


        // tokenizer
        var whiteRe = /^\s+$/;
        var wordRe = /[\w$\-_]/;

        var pos = -1,
            ch;
        var parenLevel = 0;

        function next() {
            ch = source_text.charAt(++pos);
            return ch || '';
        }

        function peek(skipWhitespace) {
            var result = '';
            var prev_pos = pos;
            if (skipWhitespace) {
                eatWhitespace();
            }
            result = source_text.charAt(pos + 1) || '';
            pos = prev_pos - 1;
            next();
            return result;
        }

        function eatString(endChars) {
            var start = pos;
            while (next()) {
                if (ch === "\\") {
                    next();
                } else if (endChars.indexOf(ch) !== -1) {
                    break;
                } else if (ch === "\n") {
                    break;
                }
            }
            return source_text.substring(start, pos + 1);
        }

        function peekString(endChar) {
            var prev_pos = pos;
            var str = eatString(endChar);
            pos = prev_pos - 1;
            next();
            return str;
        }

        function eatWhitespace() {
            var result = '';
            while (whiteRe.test(peek())) {
                next();
                result += ch;
            }
            return result;
        }

        function skipWhitespace() {
            var result = '';
            if (ch && whiteRe.test(ch)) {
                result = ch;
            }
            while (whiteRe.test(next())) {
                result += ch;
            }
            return result;
        }

        function eatComment(singleLine) {
            var start = pos;
            singleLine = peek() === "/";
            next();
            while (next()) {
                if (!singleLine && ch === "*" && peek() === "/") {
                    next();
                    break;
                } else if (singleLine && ch === "\n") {
                    return source_text.substring(start, pos);
                }
            }

            return source_text.substring(start, pos) + ch;
        }


        function lookBack(str) {
            return source_text.substring(pos - str.length, pos).toLowerCase() ===
                str;
        }

        // Nested pseudo-class if we are insideRule
        // and the next special character found opens
        // a new block
        function foundNestedPseudoClass() {
            var openParen = 0;
            for (var i = pos + 1; i < source_text.length; i++) {
                var ch = source_text.charAt(i);
                if (ch === "{") {
                    return true;
                } else if (ch === '(') {
                    // pseudoclasses can contain ()
                    openParen += 1;
                } else if (ch === ')') {
                    if (openParen == 0) {
                        return false;
                    }
                    openParen -= 1;
                } else if (ch === ";" || ch === "}") {
                    return false;
                }
            }
            return false;
        }

        // printer
        var basebaseIndentString = source_text.match(/^[\t ]*/)[0];
        var singleIndent = new Array(indentSize + 1).join(indentCharacter);
        var indentLevel = 0;
        var nestedLevel = 0;

        function indent() {
            indentLevel++;
            basebaseIndentString += singleIndent;
        }

        function outdent() {
            indentLevel--;
            basebaseIndentString = basebaseIndentString.slice(0, -indentSize);
        }

        var print = {};
        print["{"] = function(ch) {
            print.singleSpace();
            output.push(ch);
            print.newLine();
        };
        print["}"] = function(ch) {
            print.newLine();
            output.push(ch);
            print.newLine();
        };

        print._lastCharWhitespace = function() {
            return whiteRe.test(output[output.length - 1]);
        };

        print.newLine = function(keepWhitespace) {
            if (output.length) {
                if (!keepWhitespace && output[output.length - 1] !== '\n') {
                    print.trim();
                }

                output.push('\n');

                if (basebaseIndentString) {
                    output.push(basebaseIndentString);
                }
            }
        };
        print.singleSpace = function() {
            if (output.length && !print._lastCharWhitespace()) {
                output.push(' ');
            }
        };

        print.preserveSingleSpace = function() {
            if (isAfterSpace) {
                print.singleSpace();
            }
        };

        print.trim = function() {
            while (print._lastCharWhitespace()) {
                output.pop();
            }
        };


        var output = [];
        /*_____________________--------------------_____________________*/

        var insideRule = false;
        var insidePropertyValue = false;
        var enteringConditionalGroup = false;
        var top_ch = '';
        var last_top_ch = '';

        while (true) {
            var whitespace = skipWhitespace();
            var isAfterSpace = whitespace !== '';
            var isAfterNewline = whitespace.indexOf('\n') !== -1;
            last_top_ch = top_ch;
            top_ch = ch;

            if (!ch) {
                break;
            } else if (ch === '/' && peek() === '*') { /* css comment */
                var header = indentLevel === 0;

                if (isAfterNewline || header) {
                    print.newLine();
                }

                output.push(eatComment());
                print.newLine();
                if (header) {
                    print.newLine(true);
                }
            } else if (ch === '/' && peek() === '/') { // single line comment
                if (!isAfterNewline && last_top_ch !== '{' ) {
                    print.trim();
                }
                print.singleSpace();
                output.push(eatComment());
                print.newLine();
            } else if (ch === '@') {
                print.preserveSingleSpace();
                output.push(ch);

                // strip trailing space, if present, for hash property checks
                var variableOrRule = peekString(": ,;{}()[]/='\"");

                if (variableOrRule.match(/[ :]$/)) {
                    // we have a variable or pseudo-class, add it and insert one space before continuing
                    next();
                    variableOrRule = eatString(": ").replace(/\s$/, '');
                    output.push(variableOrRule);
                    print.singleSpace();
                }

                variableOrRule = variableOrRule.replace(/\s$/, '')

                // might be a nesting at-rule
                if (variableOrRule in NESTED_AT_RULE) {
                    nestedLevel += 1;
                    if (variableOrRule in CONDITIONAL_GROUP_RULE) {
                        enteringConditionalGroup = true;
                    }
                }
            } else if (ch === '#' && peek() === '{') {
              print.preserveSingleSpace();
              output.push(eatString('}'));
            } else if (ch === '{') {
                if (peek(true) === '}') {
                    eatWhitespace();
                    next();
                    print.singleSpace();
                    output.push("{}");
                    print.newLine();
                    if (newline_between_rules && indentLevel === 0) {
                        print.newLine(true);
                    }
                } else {
                    indent();
                    print["{"](ch);
                    // when entering conditional groups, only rulesets are allowed
                    if (enteringConditionalGroup) {
                        enteringConditionalGroup = false;
                        insideRule = (indentLevel > nestedLevel);
                    } else {
                        // otherwise, declarations are also allowed
                        insideRule = (indentLevel >= nestedLevel);
                    }
                }
            } else if (ch === '}') {
                outdent();
                print["}"](ch);
                insideRule = false;
                insidePropertyValue = false;
                if (nestedLevel) {
                    nestedLevel--;
                }
                if (newline_between_rules && indentLevel === 0) {
                    print.newLine(true);
                }
            } else if (ch === ":") {
                eatWhitespace();
                if ((insideRule || enteringConditionalGroup) &&
                    !(lookBack("&") || foundNestedPseudoClass())) {
                    // 'property: value' delimiter
                    // which could be in a conditional group query
                    insidePropertyValue = true;
                    output.push(':');
                    print.singleSpace();
                } else {
                    // sass/less parent reference don't use a space
                    // sass nested pseudo-class don't use a space
                    if (peek() === ":") {
                        // pseudo-element
                        next();
                        output.push("::");
                    } else {
                        // pseudo-class
                        output.push(':');
                    }
                }
            } else if (ch === '"' || ch === '\'') {
                print.preserveSingleSpace();
                output.push(eatString(ch));
            } else if (ch === ';') {
                insidePropertyValue = false;
                output.push(ch);
                print.newLine();
            } else if (ch === '(') { // may be a url
                if (lookBack("url")) {
                    output.push(ch);
                    eatWhitespace();
                    if (next()) {
                        if (ch !== ')' && ch !== '"' && ch !== '\'') {
                            output.push(eatString(')'));
                        } else {
                            pos--;
                        }
                    }
                } else {
                    parenLevel++;
                    print.preserveSingleSpace();
                    output.push(ch);
                    eatWhitespace();
                }
            } else if (ch === ')') {
                output.push(ch);
                parenLevel--;
            } else if (ch === ',') {
                output.push(ch);
                eatWhitespace();
                if (selectorSeparatorNewline && !insidePropertyValue && parenLevel < 1) {
                    print.newLine();
                } else {
                    print.singleSpace();
                }
            } else if (ch === ']') {
                output.push(ch);
            } else if (ch === '[') {
                print.preserveSingleSpace();
                output.push(ch);
            } else if (ch === '=') { // no whitespace before or after
                eatWhitespace()
                ch = '=';
                output.push(ch);
            } else {
                print.preserveSingleSpace();
                output.push(ch);
            }
        }


        var sweetCode = '';
        if (basebaseIndentString) {
            sweetCode += basebaseIndentString;
        }

        sweetCode += output.join('').replace(/[\r\n\t ]+$/, '');

        // establish end_with_newline
        if (end_with_newline) {
            sweetCode += '\n';
        }

        if (eol != '\n') {
            sweetCode = sweetCode.replace(/[\n]/g, eol);
        }

        return sweetCode;
    }

    function in_array(what, arr) {
        for (var i = 0; i < arr.length; i += 1) {
            if (arr[i] === what) {
                return true;
            }
        }
        return false;
    }

    function trim(s) {
        return s.replace(/^\s+|\s+$/g, '');
    }

    function ltrim(s) {
        return s.replace(/^\s+/g, '');
    }

    function rtrim(s) {
        return s.replace(/\s+$/g, '');
    }

    function js_beautify(js_source_text, options) {
        
        var beautifier = new Beautifier(js_source_text, options);
        return beautifier.beautify();
    }

    var MODE = {
            BlockStatement: 'BlockStatement', // 'BLOCK'
            Statement: 'Statement', // 'STATEMENT'
            ObjectLiteral: 'ObjectLiteral', // 'OBJECT',
            ArrayLiteral: 'ArrayLiteral', //'[EXPRESSION]',
            ForInitializer: 'ForInitializer', //'(FOR-EXPRESSION)',
            Conditional: 'Conditional', //'(COND-EXPRESSION)',
            Expression: 'Expression' //'(EXPRESSION)'
        };

    function Beautifier(js_source_text, options) {
        
        var output
        var tokens = [], token_pos;
        var Tokenizer;
        var current_token;
        var last_type, last_last_text, indent_string;
        var flags, previous_flags, flag_store;
        var prefix;

        var handlers, opt;
        var baseIndentString = '';

        handlers = {
            'TK_START_EXPR': handle_start_expr,
            'TK_END_EXPR': handle_end_expr,
            'TK_START_BLOCK': handle_start_block,
            'TK_END_BLOCK': handle_end_block,
            'TK_WORD': handle_word,
            'TK_RESERVED': handle_word,
            'TK_SEMICOLON': handle_semicolon,
            'TK_STRING': handle_string,
            'TK_EQUALS': handle_equals,
            'TK_OPERATOR': handle_operator,
            'TK_COMMA': handle_comma,
            'TK_BLOCK_COMMENT': handle_block_comment,
            'TK_COMMENT': handle_comment,
            'TK_DOT': handle_dot,
            'TK_UNKNOWN': handle_unknown,
            'TK_EOF': handle_eof
        };

        function create_flags(flags_base, mode) {
            var next_indent_level = 0;
            if (flags_base) {
                next_indent_level = flags_base.indentation_level;
                if (!output.just_added_newline() &&
                    flags_base.line_indent_level > next_indent_level) {
                    next_indent_level = flags_base.line_indent_level;
                }
            }

            var next_flags = {
                mode: mode,
                parent: flags_base,
                last_text: flags_base ? flags_base.last_text : '', // last token text
                last_word: flags_base ? flags_base.last_word : '', // last 'TK_WORD' passed
                declaration_statement: false,
                declaration_assignment: false,
                multiline_frame: false,
                if_block: false,
                else_block: false,
                do_block: false,
                do_while: false,
                in_case_statement: false, // switch(..){ INSIDE HERE }
                in_case: false, // we're on the exact line with "case 0:"
                case_body: false, // the indented case-action block
                indentation_level: next_indent_level,
                line_indent_level: flags_base ? flags_base.line_indent_level : next_indent_level,
                start_line_index: output.get_line_number(),
                ternary_depth: 0
            };
            return next_flags;
        }

        // Some interpreters have unexpected results with foo = baz || bar;
        options = options ? options : {};
        opt = {};

        // compatibility
        if (options.braces_on_own_line !== undefined) { //graceful handling of deprecated option
            opt.brace_style = options.braces_on_own_line ? "expand" : "collapse";
        }
        opt.brace_style = options.brace_style ? options.brace_style : (opt.brace_style ? opt.brace_style : "collapse");

        // graceful handling of deprecated option
        if (opt.brace_style === "expand-strict") {
            opt.brace_style = "expand";
        }


        opt.indent_size = options.indent_size ? parseInt(options.indent_size, 10) : 4;
        opt.indent_char = options.indent_char ? options.indent_char : ' ';
        opt.eol = options.eol ? options.eol : '\n';
        opt.preserve_newlines = (options.preserve_newlines === undefined) ? true : options.preserve_newlines;
        opt.break_chained_methods = (options.break_chained_methods === undefined) ? false : options.break_chained_methods;
        opt.max_preserve_newlines = (options.max_preserve_newlines === undefined) ? 0 : parseInt(options.max_preserve_newlines, 10);
        opt.space_in_paren = (options.space_in_paren === undefined) ? false : options.space_in_paren;
        opt.space_in_empty_paren = (options.space_in_empty_paren === undefined) ? false : options.space_in_empty_paren;
        opt.jslint_happy = (options.jslint_happy === undefined) ? false : options.jslint_happy;
        opt.space_after_anon_function = (options.space_after_anon_function === undefined) ? false : options.space_after_anon_function;
        opt.keep_array_indentation = (options.keep_array_indentation === undefined) ? false : options.keep_array_indentation;
        opt.space_before_conditional = (options.space_before_conditional === undefined) ? true : options.space_before_conditional;
        opt.unescape_strings = (options.unescape_strings === undefined) ? false : options.unescape_strings;
        opt.wrap_line_length = (options.wrap_line_length === undefined) ? 0 : parseInt(options.wrap_line_length, 10);
        opt.e4x = (options.e4x === undefined) ? false : options.e4x;
        opt.end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
        opt.comma_first = (options.comma_first === undefined) ? false : options.comma_first;

        // For testing of beautify ignore:start directive
        opt.test_output_raw = (options.test_output_raw === undefined) ? false : options.test_output_raw;

        // force opt.space_after_anon_function to true if opt.jslint_happy
        if(opt.jslint_happy) {
            opt.space_after_anon_function = true;
        }

        if(options.indent_with_tabs){
            opt.indent_char = '\t';
            opt.indent_size = 1;
        }

        opt.eol = opt.eol.replace(/\\r/, '\r').replace(/\\n/, '\n')

        //----------------------------------
        indent_string = '';
        while (opt.indent_size > 0) {
            indent_string += opt.indent_char;
            opt.indent_size -= 1;
        }

        var preindent_index = 0;
        if(js_source_text && js_source_text.length) {
            while ( (js_source_text.charAt(preindent_index) === ' ' ||
                    js_source_text.charAt(preindent_index) === '\t')) {
                baseIndentString += js_source_text.charAt(preindent_index);
                preindent_index += 1;
            }
            js_source_text = js_source_text.substring(preindent_index);
        }

        last_type = 'TK_START_BLOCK'; // last token type
        last_last_text = ''; // pre-last token text
        output = new Output(indent_string, baseIndentString);

        // If testing the ignore directive, start with output disable set to true
        output.raw = opt.test_output_raw;


        // Stack of parsing/formatting states, including MODE.
        // We tokenize, parse, and output in an almost purely a forward-only stream of token input
        // and formatted output.  This makes the beautifier less accurate than full parsers
        // but also far more tolerant of syntax errors.
        //
        // For example, the default mode is MODE.BlockStatement. If we see a '{' we push a new frame of type
        // MODE.BlockStatement on the the stack, even though it could be object literal.  If we later
        // encounter a ":", we'll switch to to MODE.ObjectLiteral.  If we then see a ";",
        // most full parsers would die, but the beautifier gracefully falls back to
        // MODE.BlockStatement and continues on.
        flag_store = [];
        set_mode(MODE.BlockStatement);

        this.beautify = function() {

            /*jshint onevar:true */
            var local_token, sweet_code;
            Tokenizer = new tokenizer(js_source_text, opt, indent_string);
            tokens = Tokenizer.tokenize();
            token_pos = 0;

            while (local_token = get_token()) {
                for(var i = 0; i < local_token.comments_before.length; i++) {
                    // The cleanest handling of inline comments is to treat them as though they aren't there.
                    // Just continue formatting and the behavior should be logical.
                    // Also ignore unknown tokens.  Again, this should result in better behavior.
                    handle_token(local_token.comments_before[i]);
                }
                handle_token(local_token);

                last_last_text = flags.last_text;
                last_type = local_token.type;
                flags.last_text = local_token.text;

                token_pos += 1;
            }

            sweet_code = output.get_code();
            if (opt.end_with_newline) {
                sweet_code += '\n';
            }

            if (opt.eol != '\n') {
                sweet_code = sweet_code.replace(/[\n]/g, opt.eol);
            }

            return sweet_code;
        };

        function handle_token(local_token) {
            var newlines = local_token.newlines;
            var keep_whitespace = opt.keep_array_indentation && is_array(flags.mode);

            if (keep_whitespace) {
                for (i = 0; i < newlines; i += 1) {
                    print_newline(i > 0);
                }
            } else {
                if (opt.max_preserve_newlines && newlines > opt.max_preserve_newlines) {
                    newlines = opt.max_preserve_newlines;
                }

                if (opt.preserve_newlines) {
                    if (local_token.newlines > 1) {
                        print_newline();
                        for (var i = 1; i < newlines; i += 1) {
                            print_newline(true);
                        }
                    }
                }
            }

            current_token = local_token;
            handlers[current_token.type]();
        }

        // we could use just string.split, but
        // IE doesn't like returning empty strings
        function split_newlines(s) {
            //return s.split(/\x0d\x0a|\x0a/);

            s = s.replace(/\x0d/g, '');
            var out = [],
                idx = s.indexOf("\n");
            while (idx !== -1) {
                out.push(s.substring(0, idx));
                s = s.substring(idx + 1);
                idx = s.indexOf("\n");
            }
            if (s.length) {
                out.push(s);
            }
            return out;
        }

        function allow_wrap_or_preserved_newline(force_linewrap) {
            force_linewrap = (force_linewrap === undefined) ? false : force_linewrap;

            // Never wrap the first token on a line
            if (output.just_added_newline()) {
                return
            }

            if ((opt.preserve_newlines && current_token.wanted_newline) || force_linewrap) {
                print_newline(false, true);
            } else if (opt.wrap_line_length) {
                var proposed_line_length = output.current_line.get_character_count() + current_token.text.length +
                    (output.space_before_token ? 1 : 0);
                if (proposed_line_length >= opt.wrap_line_length) {
                    print_newline(false, true);
                }
            }
        }

        function print_newline(force_newline, preserve_statement_flags) {
            if (!preserve_statement_flags) {
                if (flags.last_text !== ';' && flags.last_text !== ',' && flags.last_text !== '=' && last_type !== 'TK_OPERATOR') {
                    while (flags.mode === MODE.Statement && !flags.if_block && !flags.do_block) {
                        restore_mode();
                    }
                }
            }

            if (output.add_new_line(force_newline)) {
                flags.multiline_frame = true;
            }
        }

        function print_token_line_indentation() {
            if (output.just_added_newline()) {
                if (opt.keep_array_indentation && is_array(flags.mode) && current_token.wanted_newline) {
                    output.current_line.push(current_token.whitespace_before);
                    output.space_before_token = false;
                } else if (output.set_indent(flags.indentation_level)) {
                    flags.line_indent_level = flags.indentation_level;
                }
            }
        }

        function print_token(printable_token) {
            if (output.raw) {
                output.add_raw_token(current_token)
                return;
            }

            if (opt.comma_first && last_type === 'TK_COMMA'
                && output.just_added_newline()) {
                if(output.previous_line.last() === ',') {
                    output.previous_line.pop();
                    print_token_line_indentation();
                    output.add_token(',');
                    output.space_before_token = true;
                }
            }

            printable_token = printable_token || current_token.text;
            print_token_line_indentation();
            output.add_token(printable_token);
        }

        function indent() {
            flags.indentation_level += 1;
        }

        function deindent() {
            if (flags.indentation_level > 0 &&
                ((!flags.parent) || flags.indentation_level > flags.parent.indentation_level))
                flags.indentation_level -= 1;
        }

        function set_mode(mode) {
            if (flags) {
                flag_store.push(flags);
                previous_flags = flags;
            } else {
                previous_flags = create_flags(null, mode);
            }

            flags = create_flags(previous_flags, mode);
        }

        function is_array(mode) {
            return mode === MODE.ArrayLiteral;
        }

        function is_expression(mode) {
            return in_array(mode, [MODE.Expression, MODE.ForInitializer, MODE.Conditional]);
        }

        function restore_mode() {
            if (flag_store.length > 0) {
                previous_flags = flags;
                flags = flag_store.pop();
                if (previous_flags.mode === MODE.Statement) {
                    output.remove_redundant_indentation(previous_flags);
                }
            }
        }

        function start_of_object_property() {
            return flags.parent.mode === MODE.ObjectLiteral && flags.mode === MODE.Statement && (
                (flags.last_text === ':' && flags.ternary_depth === 0) || (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set'])));
        }

        function start_of_statement() {
            if (
                    (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && current_token.type === 'TK_WORD') ||
                    (last_type === 'TK_RESERVED' && flags.last_text === 'do') ||
                    (last_type === 'TK_RESERVED' && flags.last_text === 'return' && !current_token.wanted_newline) ||
                    (last_type === 'TK_RESERVED' && flags.last_text === 'else' && !(current_token.type === 'TK_RESERVED' && current_token.text === 'if')) ||
                    (last_type === 'TK_END_EXPR' && (previous_flags.mode === MODE.ForInitializer || previous_flags.mode === MODE.Conditional)) ||
                    (last_type === 'TK_WORD' && flags.mode === MODE.BlockStatement
                        && !flags.in_case
                        && !(current_token.text === '--' || current_token.text === '++')
                        && last_last_text !== 'function'
                        && current_token.type !== 'TK_WORD' && current_token.type !== 'TK_RESERVED') ||
                    (flags.mode === MODE.ObjectLiteral && (
                        (flags.last_text === ':' && flags.ternary_depth === 0) || (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set']))))
                ) {

                set_mode(MODE.Statement);
                indent();

                if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && current_token.type === 'TK_WORD') {
                    flags.declaration_statement = true;
                }

                // Issue #276:
                // If starting a new statement with [if, for, while, do], push to a new line.
                // if (a) if (b) if(c) d(); else e(); else f();
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline(
                        current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['do', 'for', 'if', 'while']));
                }

                return true;
            }
            return false;
        }

        function all_lines_start_with(lines, c) {
            for (var i = 0; i < lines.length; i++) {
                var line = trim(lines[i]);
                if (line.charAt(0) !== c) {
                    return false;
                }
            }
            return true;
        }

        function each_line_matches_indent(lines, indent) {
            var i = 0,
                len = lines.length,
                line;
            for (; i < len; i++) {
                line = lines[i];
                // allow empty lines to pass through
                if (line && line.indexOf(indent) !== 0) {
                    return false;
                }
            }
            return true;
        }

        function is_special_word(word) {
            return in_array(word, ['case', 'return', 'do', 'if', 'throw', 'else']);
        }

        function get_token(offset) {
            var index = token_pos + (offset || 0);
            return (index < 0 || index >= tokens.length) ? null : tokens[index];
        }

        function handle_start_expr() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            var next_mode = MODE.Expression;
            if (current_token.text === '[') {

                if (last_type === 'TK_WORD' || flags.last_text === ')') {
                    // this is array index specifier, break immediately
                    // a[x], fn()[x]
                    if (last_type === 'TK_RESERVED' && in_array(flags.last_text, Tokenizer.line_starters)) {
                        output.space_before_token = true;
                    }
                    set_mode(next_mode);
                    print_token();
                    indent();
                    if (opt.space_in_paren) {
                        output.space_before_token = true;
                    }
                    return;
                }

                next_mode = MODE.ArrayLiteral;
                if (is_array(flags.mode)) {
                    if (flags.last_text === '[' ||
                        (flags.last_text === ',' && (last_last_text === ']' || last_last_text === '}'))) {
                        // ], [ goes to new line
                        // }, [ goes to new line
                        if (!opt.keep_array_indentation) {
                            print_newline();
                        }
                    }
                }

            } else {
                if (last_type === 'TK_RESERVED' && flags.last_text === 'for') {
                    next_mode = MODE.ForInitializer;
                } else if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['if', 'while'])) {
                    next_mode = MODE.Conditional;
                } else {
                    // next_mode = MODE.Expression;
                }
            }

            if (flags.last_text === ';' || last_type === 'TK_START_BLOCK') {
                print_newline();
            } else if (last_type === 'TK_END_EXPR' || last_type === 'TK_START_EXPR' || last_type === 'TK_END_BLOCK' || flags.last_text === '.') {
                // TODO: Consider whether forcing this is required.  Review failing tests when removed.
                allow_wrap_or_preserved_newline(current_token.wanted_newline);
                // do nothing on (( and )( and ][ and ]( and .(
            } else if (!(last_type === 'TK_RESERVED' && current_token.text === '(') && last_type !== 'TK_WORD' && last_type !== 'TK_OPERATOR') {
                output.space_before_token = true;
            } else if ((last_type === 'TK_RESERVED' && (flags.last_word === 'function' || flags.last_word === 'typeof')) ||
                (flags.last_text === '*' && last_last_text === 'function')) {
                // function() vs function ()
                if (opt.space_after_anon_function) {
                    output.space_before_token = true;
                }
            } else if (last_type === 'TK_RESERVED' && (in_array(flags.last_text, Tokenizer.line_starters) || flags.last_text === 'catch')) {
                if (opt.space_before_conditional) {
                    output.space_before_token = true;
                }
            }

            // Should be a space between await and an IIFE
            if(current_token.text === '(' && last_type === 'TK_RESERVED' && flags.last_word === 'await'){
                output.space_before_token = true;
            }

            // Support of this kind of newline preservation.
            // a = (b &&
            //     (c || d));
            if (current_token.text === '(') {
                if (last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                    if (!start_of_object_property()) {
                        allow_wrap_or_preserved_newline();
                    }
                }
            }

            set_mode(next_mode);
            print_token();
            if (opt.space_in_paren) {
                output.space_before_token = true;
            }

            // In all cases, if we newline while inside an expression it should be indented.
            indent();
        }

        function handle_end_expr() {
            // statements inside expressions are not valid syntax, but...
            // statements must all be closed when their container closes
            while (flags.mode === MODE.Statement) {
                restore_mode();
            }

            if (flags.multiline_frame) {
                allow_wrap_or_preserved_newline(current_token.text === ']' && is_array(flags.mode) && !opt.keep_array_indentation);
            }

            if (opt.space_in_paren) {
                if (last_type === 'TK_START_EXPR' && ! opt.space_in_empty_paren) {
                    // () [] no inner space in empty parens like these, ever, ref #320
                    output.trim();
                    output.space_before_token = false;
                } else {
                    output.space_before_token = true;
                }
            }
            if (current_token.text === ']' && opt.keep_array_indentation) {
                print_token();
                restore_mode();
            } else {
                restore_mode();
                print_token();
            }
            output.remove_redundant_indentation(previous_flags);

            // do {} while () // no statement required after
            if (flags.do_while && previous_flags.mode === MODE.Conditional) {
                previous_flags.mode = MODE.Expression;
                flags.do_block = false;
                flags.do_while = false;

            }
        }

        function handle_start_block() {
            // Check if this is should be treated as a ObjectLiteral
            var next_token = get_token(1)
            var second_token = get_token(2)
            if (second_token && (
                    (second_token.text === ':' && in_array(next_token.type, ['TK_STRING', 'TK_WORD', 'TK_RESERVED']))
                    || (in_array(next_token.text, ['get', 'set']) && in_array(second_token.type, ['TK_WORD', 'TK_RESERVED']))
                )) {
                // We don't support TypeScript,but we didn't break it for a very long time.
                // We'll try to keep not breaking it.
                if (!in_array(last_last_text, ['class','interface'])) {
                    set_mode(MODE.ObjectLiteral);
                } else {
                    set_mode(MODE.BlockStatement);
                }
            } else {
                set_mode(MODE.BlockStatement);
            }

            var empty_braces = !next_token.comments_before.length &&  next_token.text === '}';
            var empty_anonymous_function = empty_braces && flags.last_word === 'function' &&
                last_type === 'TK_END_EXPR';

            if (opt.brace_style === "expand" ||
                (opt.brace_style === "none" && current_token.wanted_newline)) {
                if (last_type !== 'TK_OPERATOR' &&
                    (empty_anonymous_function ||
                        last_type === 'TK_EQUALS' ||
                        (last_type === 'TK_RESERVED' && is_special_word(flags.last_text) && flags.last_text !== 'else'))) {
                    output.space_before_token = true;
                } else {
                    print_newline(false, true);
                }
            } else { // collapse
                if (last_type !== 'TK_OPERATOR' && last_type !== 'TK_START_EXPR') {
                    if (last_type === 'TK_START_BLOCK') {
                        print_newline();
                    } else {
                        output.space_before_token = true;
                    }
                } else {
                    // if TK_OPERATOR or TK_START_EXPR
                    if (is_array(previous_flags.mode) && flags.last_text === ',') {
                        if (last_last_text === '}') {
                            // }, { in array context
                            output.space_before_token = true;
                        } else {
                            print_newline(); // [a, b, c, {
                        }
                    }
                }
            }
            print_token();
            indent();
        }

        function handle_end_block() {
            // statements must all be closed when their container closes
            while (flags.mode === MODE.Statement) {
                restore_mode();
            }
            var empty_braces = last_type === 'TK_START_BLOCK';

            if (opt.brace_style === "expand") {
                if (!empty_braces) {
                    print_newline();
                }
            } else {
                // skip {}
                if (!empty_braces) {
                    if (is_array(flags.mode) && opt.keep_array_indentation) {
                        // we REALLY need a newline here, but newliner would skip that
                        opt.keep_array_indentation = false;
                        print_newline();
                        opt.keep_array_indentation = true;

                    } else {
                        print_newline();
                    }
                }
            }
            restore_mode();
            print_token();
        }

        function handle_word() {
            if (current_token.type === 'TK_RESERVED' && flags.mode !== MODE.ObjectLiteral &&
                in_array(current_token.text, ['set', 'get'])) {
                current_token.type = 'TK_WORD';
            }

            if (current_token.type === 'TK_RESERVED' && flags.mode === MODE.ObjectLiteral) {
                var next_token = get_token(1);
                if (next_token.text == ':') {
                    current_token.type = 'TK_WORD';
                }
            }

            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            } else if (current_token.wanted_newline && !is_expression(flags.mode) &&
                (last_type !== 'TK_OPERATOR' || (flags.last_text === '--' || flags.last_text === '++')) &&
                last_type !== 'TK_EQUALS' &&
                (opt.preserve_newlines || !(last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const', 'set', 'get'])))) {

                print_newline();
            }

            if (flags.do_block && !flags.do_while) {
                if (current_token.type === 'TK_RESERVED' && current_token.text === 'while') {
                    // do {} ## while ()
                    output.space_before_token = true;
                    print_token();
                    output.space_before_token = true;
                    flags.do_while = true;
                    return;
                } else {
                    // do {} should always have while as the next word.
                    // if we don't see the expected while, recover
                    print_newline();
                    flags.do_block = false;
                }
            }

            // if may be followed by else, or not
            // Bare/inline ifs are tricky
            // Need to unwind the modes correctly: if (a) if (b) c(); else d(); else e();
            if (flags.if_block) {
                if (!flags.else_block && (current_token.type === 'TK_RESERVED' && current_token.text === 'else')) {
                    flags.else_block = true;
                } else {
                    while (flags.mode === MODE.Statement) {
                        restore_mode();
                    }
                    flags.if_block = false;
                    flags.else_block = false;
                }
            }

            if (current_token.type === 'TK_RESERVED' && (current_token.text === 'case' || (current_token.text === 'default' && flags.in_case_statement))) {
                print_newline();
                if (flags.case_body || opt.jslint_happy) {
                    // switch cases following one another
                    deindent();
                    flags.case_body = false;
                }
                print_token();
                flags.in_case = true;
                flags.in_case_statement = true;
                return;
            }

            if (current_token.type === 'TK_RESERVED' && current_token.text === 'function') {
                if (in_array(flags.last_text, ['}', ';']) || (output.just_added_newline() && ! in_array(flags.last_text, ['[', '{', ':', '=', ',']))) {
                    // make sure there is a nice clean space of at least one blank line
                    // before a new function definition
                    if ( !output.just_added_blankline() && !current_token.comments_before.length) {
                        print_newline();
                        print_newline(true);
                    }
                }
                if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD') {
                    if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set', 'new', 'return', 'export', 'async'])) {
                        output.space_before_token = true;
                    } else if (last_type === 'TK_RESERVED' && flags.last_text === 'default' && last_last_text === 'export') {
                        output.space_before_token = true;
                    } else {
                        print_newline();
                    }
                } else if (last_type === 'TK_OPERATOR' || flags.last_text === '=') {
                    // foo = function
                    output.space_before_token = true;
                } else if (!flags.multiline_frame && (is_expression(flags.mode) || is_array(flags.mode))) {
                    // (function
                } else {
                    print_newline();
                }
            }

            if (last_type === 'TK_COMMA' || last_type === 'TK_START_EXPR' || last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline();
                }
            }

            if (current_token.type === 'TK_RESERVED' &&  in_array(current_token.text, ['function', 'get', 'set'])) {
                print_token();
                flags.last_word = current_token.text;
                return;
            }

            prefix = 'NONE';

            if (last_type === 'TK_END_BLOCK') {
                if (!(current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['else', 'catch', 'finally']))) {
                    prefix = 'NEWLINE';
                } else {
                    if (opt.brace_style === "expand" ||
                        opt.brace_style === "end-expand" ||
                        (opt.brace_style === "none" && current_token.wanted_newline)) {
                        prefix = 'NEWLINE';
                    } else {
                        prefix = 'SPACE';
                        output.space_before_token = true;
                    }
                }
            } else if (last_type === 'TK_SEMICOLON' && flags.mode === MODE.BlockStatement) {
                // TODO: Should this be for STATEMENT as well?
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_SEMICOLON' && is_expression(flags.mode)) {
                prefix = 'SPACE';
            } else if (last_type === 'TK_STRING') {
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD' ||
                (flags.last_text === '*' && last_last_text === 'function')) {
                prefix = 'SPACE';
            } else if (last_type === 'TK_START_BLOCK') {
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_END_EXPR') {
                output.space_before_token = true;
                prefix = 'NEWLINE';
            }

            if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, Tokenizer.line_starters) && flags.last_text !== ')') {
                if (flags.last_text === 'else' || flags.last_text === 'export') {
                    prefix = 'SPACE';
                } else {
                    prefix = 'NEWLINE';
                }

            }

            if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['else', 'catch', 'finally'])) {
                if (last_type !== 'TK_END_BLOCK' ||
                    opt.brace_style === "expand" ||
                    opt.brace_style === "end-expand" ||
                    (opt.brace_style === "none" && current_token.wanted_newline)) {
                    print_newline();
                } else {
                    output.trim(true);
                    var line = output.current_line;
                    // If we trimmed and there's something other than a close block before us
                    // put a newline back in.  Handles '} // comment' scenario.
                    if (line.last() !== '}') {
                        print_newline();
                    }
                    output.space_before_token = true;
                }
            } else if (prefix === 'NEWLINE') {
                if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
                    // no newline between 'return nnn'
                    output.space_before_token = true;
                } else if (last_type !== 'TK_END_EXPR') {
                    if ((last_type !== 'TK_START_EXPR' || !(current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['var', 'let', 'const']))) && flags.last_text !== ':') {
                        // no need to force newline on 'var': for (var x = 0...)
                        if (current_token.type === 'TK_RESERVED' && current_token.text === 'if' && flags.last_text === 'else') {
                            // no newline for } else if {
                            output.space_before_token = true;
                        } else {
                            print_newline();
                        }
                    }
                } else if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, Tokenizer.line_starters) && flags.last_text !== ')') {
                    print_newline();
                }
            } else if (flags.multiline_frame && is_array(flags.mode) && flags.last_text === ',' && last_last_text === '}') {
                print_newline(); // }, in lists get a newline treatment
            } else if (prefix === 'SPACE') {
                output.space_before_token = true;
            }
            print_token();
            flags.last_word = current_token.text;

            if (current_token.type === 'TK_RESERVED' && current_token.text === 'do') {
                flags.do_block = true;
            }

            if (current_token.type === 'TK_RESERVED' && current_token.text === 'if') {
                flags.if_block = true;
            }
        }

        function handle_semicolon() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
                // Semicolon can be the start (and end) of a statement
                output.space_before_token = false;
            }
            while (flags.mode === MODE.Statement && !flags.if_block && !flags.do_block) {
                restore_mode();
            }
            print_token();
        }

        function handle_string() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
                // One difference - strings want at least a space before
                output.space_before_token = true;
            } else if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD') {
                output.space_before_token = true;
            } else if (last_type === 'TK_COMMA' || last_type === 'TK_START_EXPR' || last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline();
                }
            } else {
                print_newline();
            }
            print_token();
        }

        function handle_equals() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            if (flags.declaration_statement) {
                // just got an '=' in a var-line, different formatting/line-breaking, etc will now be done
                flags.declaration_assignment = true;
            }
            output.space_before_token = true;
            print_token();
            output.space_before_token = true;
        }

        function handle_comma() {
            if (flags.declaration_statement) {
                if (is_expression(flags.parent.mode)) {
                    // do not break on comma, for(var a = 1, b = 2)
                    flags.declaration_assignment = false;
                }

                print_token();

                if (flags.declaration_assignment) {
                    flags.declaration_assignment = false;
                    print_newline(false, true);
                } else {
                    output.space_before_token = true;
                    // for comma-first, we want to allow a newline before the comma
                    // to turn into a newline after the comma, which we will fixup later
                    if (opt.comma_first) {
                        allow_wrap_or_preserved_newline();
                    }
                }
                return;
            }

            print_token();
            if (flags.mode === MODE.ObjectLiteral ||
                (flags.mode === MODE.Statement && flags.parent.mode === MODE.ObjectLiteral)) {
                if (flags.mode === MODE.Statement) {
                    restore_mode();
                }
                print_newline();
            } else {
                // EXPR or DO_BLOCK
                output.space_before_token = true;
                // for comma-first, we want to allow a newline before the comma
                // to turn into a newline after the comma, which we will fixup later
                if (opt.comma_first) {
                    allow_wrap_or_preserved_newline();
                }
            }

        }

        function handle_operator() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
                // "return" had a special handling in TK_WORD. Now we need to return the favor
                output.space_before_token = true;
                print_token();
                return;
            }

            // hack for actionscript's import .*;
            if (current_token.text === '*' && last_type === 'TK_DOT') {
                print_token();
                return;
            }

            if (current_token.text === ':' && flags.in_case) {
                flags.case_body = true;
                indent();
                print_token();
                print_newline();
                flags.in_case = false;
                return;
            }

            if (current_token.text === '::') {
                // no spaces around exotic namespacing syntax operator
                print_token();
                return;
            }

            // Allow line wrapping between operators
            if (last_type === 'TK_OPERATOR') {
                allow_wrap_or_preserved_newline();
            }

            var space_before = true;
            var space_after = true;

            if (in_array(current_token.text, ['--', '++', '!', '~']) || (in_array(current_token.text, ['-', '+']) && (in_array(last_type, ['TK_START_BLOCK', 'TK_START_EXPR', 'TK_EQUALS', 'TK_OPERATOR']) || in_array(flags.last_text, Tokenizer.line_starters) || flags.last_text === ','))) {
                // unary operators (and binary +/- pretending to be unary) special cases

                space_before = false;
                space_after = false;

                // http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1
                // if there is a newline between -- or ++ and anything else we should preserve it.
                if (current_token.wanted_newline && (current_token.text === '--' || current_token.text === '++')) {
                    print_newline(false, true);
                }

                if (flags.last_text === ';' && is_expression(flags.mode)) {
                    // for (;; ++i)
                    //        ^^^
                    space_before = true;
                }

                if (last_type === 'TK_RESERVED') {
                    space_before = true;
                } else if (last_type === 'TK_END_EXPR') {
                    space_before = !(flags.last_text === ']' && (current_token.text === '--' || current_token.text === '++'));
                } else if (last_type === 'TK_OPERATOR') {
                    // a++ + ++b;
                    // a - -b
                    space_before = in_array(current_token.text, ['--', '-', '++', '+']) && in_array(flags.last_text, ['--', '-', '++', '+']);
                    // + and - are not unary when preceeded by -- or ++ operator
                    // a-- + b
                    // a * +b
                    // a - -b
                    if (in_array(current_token.text, ['+', '-']) && in_array(flags.last_text, ['--', '++'])) {
                        space_after = true;
                    }
                }

                if ((flags.mode === MODE.BlockStatement || flags.mode === MODE.Statement) && (flags.last_text === '{' || flags.last_text === ';')) {
                    // { foo; --i }
                    // foo(); --bar;
                    print_newline();
                }
            } else if (current_token.text === ':') {
                if (flags.ternary_depth === 0) {
                    // Colon is invalid javascript outside of ternary and object, but do our best to guess what was meant.
                    space_before = false;
                } else {
                    flags.ternary_depth -= 1;
                }
            } else if (current_token.text === '?') {
                flags.ternary_depth += 1;
            } else if (current_token.text === '*' && last_type === 'TK_RESERVED' && flags.last_text === 'function') {
                space_before = false;
                space_after = false;
            }
            output.space_before_token = output.space_before_token || space_before;
            print_token();
            output.space_before_token = space_after;
        }

        function handle_block_comment() {
            if (output.raw) {
                output.add_raw_token(current_token)
                if (current_token.directives && current_token.directives['preserve'] === 'end') {
                    // If we're testing the raw output behavior, do not allow a directive to turn it off.
                    if (!opt.test_output_raw) {
                        output.raw = false;
                    }
                }
                return;
            }

            if (current_token.directives) {
                print_newline(false, true);
                print_token();
                if (current_token.directives['preserve'] === 'start') {
                    output.raw = true;
                }
                print_newline(false, true);
                return;
            }

            // inline block
            if (!acorn.newline.test(current_token.text) && !current_token.wanted_newline) {
                output.space_before_token = true;
                print_token();
                output.space_before_token = true;
                return;
            }

            var lines = split_newlines(current_token.text);
            var j; // iterator for this case
            var javadoc = false;
            var starless = false;
            var lastIndent = current_token.whitespace_before;
            var lastIndentLength = lastIndent.length;

            // block comment starts with a new line
            print_newline(false, true);
            if (lines.length > 1) {
                if (all_lines_start_with(lines.slice(1), '*')) {
                    javadoc = true;
                }
                else if (each_line_matches_indent(lines.slice(1), lastIndent)) {
                    starless = true;
                }
            }

            // first line always indented
            print_token(lines[0]);
            for (j = 1; j < lines.length; j++) {
                print_newline(false, true);
                if (javadoc) {
                    // javadoc: reformat and re-indent
                    print_token(' ' + ltrim(lines[j]));
                } else if (starless && lines[j].length > lastIndentLength) {
                    // starless: re-indent non-empty content, avoiding trim
                    print_token(lines[j].substring(lastIndentLength));
                } else {
                    // normal comments output raw
                    output.add_token(lines[j]);
                }
            }

            // for comments of more than one line, make sure there's a new line after
            print_newline(false, true);
        }

        function handle_comment() {
            if (current_token.wanted_newline) {
                print_newline(false, true);
            } else {
                output.trim(true);
            }

            output.space_before_token = true;
            print_token();
            print_newline(false, true);
        }

        function handle_dot() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
                output.space_before_token = true;
            } else {
                // allow preserved newlines before dots in general
                // force newlines on dots after close paren when break_chained - for bar().baz()
                allow_wrap_or_preserved_newline(flags.last_text === ')' && opt.break_chained_methods);
            }

            print_token();
        }

        function handle_unknown() {
            print_token();

            if (current_token.text[current_token.text.length - 1] === '\n') {
                print_newline();
            }
        }

        function handle_eof() {
            // Unwind any open statements
            while (flags.mode === MODE.Statement) {
                restore_mode();
            }
        }
    }


    function OutputLine(parent) {
        var _character_count = 0;
        // use indent_count as a marker for lines that have preserved indentation
        var _indent_count = -1;

        var _items = [];
        var _empty = true;

        this.set_indent = function(level) {
            _character_count = parent.baseIndentLength + level * parent.indent_length
            _indent_count = level;
        }

        this.get_character_count = function() {
            return _character_count;
        }

        this.is_empty = function() {
            return _empty;
        }

        this.last = function() {
            if (!this._empty) {
              return _items[_items.length - 1];
            } else {
              return null;
            }
        }

        this.push = function(input) {
            _items.push(input);
            _character_count += input.length;
            _empty = false;
        }

        this.pop = function() {
            var item = null;
            if (!_empty) {
                item = _items.pop();
                _character_count -= item.length;
                _empty = _items.length === 0;
            }
            return item;
        }

        this.remove_indent = function() {
            if (_indent_count > 0) {
                _indent_count -= 1;
                _character_count -= parent.indent_length
            }
        }

        this.trim = function() {
            while (this.last() === ' ') {
                var item = _items.pop();
                _character_count -= 1;
            }
            _empty = _items.length === 0;
        }

        this.toString = function() {
            var result = '';
            if (!this._empty) {
                if (_indent_count >= 0) {
                    result = parent.indent_cache[_indent_count];
                }
                result += _items.join('')
            }
            return result;
        }
    }

    function Output(indent_string, baseIndentString) {
        baseIndentString = baseIndentString || '';
        this.indent_cache = [ baseIndentString ];
        this.baseIndentLength = baseIndentString.length;
        this.indent_length = indent_string.length;
        this.raw = false;

        var lines =[];
        this.baseIndentString = baseIndentString;
        this.indent_string = indent_string;
        this.previous_line = null;
        this.current_line = null;
        this.space_before_token = false;

        this.add_outputline = function() {
            this.previous_line = this.current_line;
            this.current_line = new OutputLine(this);
            lines.push(this.current_line);
        }

        // initialize
        this.add_outputline();


        this.get_line_number = function() {
            return lines.length;
        }

        // Using object instead of string to allow for later expansion of info about each line
        this.add_new_line = function(force_newline) {
            if (this.get_line_number() === 1 && this.just_added_newline()) {
                return false; // no newline on start of file
            }

            if (force_newline || !this.just_added_newline()) {
                if (!this.raw) {
                    this.add_outputline();
                }
                return true;
            }

            return false;
        }

        this.get_code = function() {
            var sweet_code = lines.join('\n').replace(/[\r\n\t ]+$/, '');
            return sweet_code;
        }

        this.set_indent = function(level) {
            // Never indent your first output indent at the start of the file
            if (lines.length > 1) {
                while(level >= this.indent_cache.length) {
                    this.indent_cache.push(this.indent_cache[this.indent_cache.length - 1] + this.indent_string);
                }

                this.current_line.set_indent(level);
                return true;
            }
            this.current_line.set_indent(0);
            return false;
        }

        this.add_raw_token = function(token) {
            for (var x = 0; x < token.newlines; x++) {
                this.add_outputline();
            }
            this.current_line.push(token.whitespace_before);
            this.current_line.push(token.text);
            this.space_before_token = false;
        }

        this.add_token = function(printable_token) {
            this.add_space_before_token();
            this.current_line.push(printable_token);
        }

        this.add_space_before_token = function() {
            if (this.space_before_token && !this.just_added_newline()) {
                this.current_line.push(' ');
            }
            this.space_before_token = false;
        }

        this.remove_redundant_indentation = function (frame) {
            // This implementation is effective but has some issues:
            //     - can cause line wrap to happen too soon due to indent removal
            //           after wrap points are calculated
            // These issues are minor compared to ugly indentation.

            if (frame.multiline_frame ||
                frame.mode === MODE.ForInitializer ||
                frame.mode === MODE.Conditional) {
                return;
            }

            // remove one indent from each line inside this section
            var index = frame.start_line_index;
            var line;

            var output_length = lines.length;
            while (index < output_length) {
                lines[index].remove_indent();
                index++;
            }
        }

        this.trim = function(eat_newlines) {
            eat_newlines = (eat_newlines === undefined) ? false : eat_newlines;

            this.current_line.trim(indent_string, baseIndentString);

            while (eat_newlines && lines.length > 1 &&
                this.current_line.is_empty()) {
                lines.pop();
                this.current_line = lines[lines.length - 1]
                this.current_line.trim();
            }

            this.previous_line = lines.length > 1 ? lines[lines.length - 2] : null;
        }

        this.just_added_newline = function() {
            return this.current_line.is_empty();
        }

        this.just_added_blankline = function() {
            if (this.just_added_newline()) {
                if (lines.length === 1) {
                    return true; // start of the file and newline = blank
                }

                var line = lines[lines.length - 2];
                return line.is_empty();
            }
            return false;
        }
    }


    var Token = function(type, text, newlines, whitespace_before, mode, parent) {
        this.type = type;
        this.text = text;
        this.comments_before = [];
        this.newlines = newlines || 0;
        this.wanted_newline = newlines > 0;
        this.whitespace_before = whitespace_before || '';
        this.parent = null;
        this.directives = null;
    }

    function tokenizer(input, opts, indent_string) {

        var whitespace = "\n\r\t ".split('');
        var digit = /[0-9]/;
        var digit_oct = /[01234567]/;
        var digit_hex = /[0123456789abcdefABCDEF]/;

        var punct = ('+ - * / % & ++ -- = += -= *= /= %= == === != !== > < >= <= >> << >>> >>>= >>= <<= && &= | || ! ~ , : ? ^ ^= |= :: =>').split(' ');
        // words which should always start on new line.
        this.line_starters = 'continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,import,export'.split(',');
        var reserved_words = this.line_starters.concat(['do', 'in', 'else', 'get', 'set', 'new', 'catch', 'finally', 'typeof', 'yield', 'async', 'await']);

        //  /* ... */ comment ends with nearest */ or end of file
        var block_comment_pattern = /([\s\S]*?)((?:\*\/)|$)/g;

        // comment ends just before nearest linefeed or end of file
        var comment_pattern = /([^\n\r\u2028\u2029]*)/g;

        var directives_block_pattern = /\/\* beautify( \w+[:]\w+)+ \*\//g;
        var directive_pattern = / (\w+)[:](\w+)/g;
        var directives_end_ignore_pattern = /([\s\S]*?)((?:\/\*\sbeautify\signore:end\s\*\/)|$)/g;

        var template_pattern = /((<\?php|<\?=)[\s\S]*?\?>)|(<%[\s\S]*?%>)/g

        var n_newlines, whitespace_before_token, in_html_comment, tokens, parser_pos;
        var input_length;

        this.tokenize = function() {
            // cache the source's length.
            input_length = input.length
            parser_pos = 0;
            in_html_comment = false
            tokens = [];

            var next, last;
            var token_values;
            var open = null;
            var open_stack = [];
            var comments = [];

            while (!(last && last.type === 'TK_EOF')) {
                token_values = tokenize_next();
                next = new Token(token_values[1], token_values[0], n_newlines, whitespace_before_token);
                while(next.type === 'TK_COMMENT' || next.type === 'TK_BLOCK_COMMENT' || next.type === 'TK_UNKNOWN') {
                    if (next.type === 'TK_BLOCK_COMMENT') {
                        next.directives = token_values[2];
                    }
                    comments.push(next);
                    token_values = tokenize_next();
                    next = new Token(token_values[1], token_values[0], n_newlines, whitespace_before_token);
                }

                if (comments.length) {
                    next.comments_before = comments;
                    comments = [];
                }

                if (next.type === 'TK_START_BLOCK' || next.type === 'TK_START_EXPR') {
                    next.parent = last;
                    open_stack.push(open);
                    open = next;
                }  else if ((next.type === 'TK_END_BLOCK' || next.type === 'TK_END_EXPR') &&
                    (open && (
                        (next.text === ']' && open.text === '[') ||
                        (next.text === ')' && open.text === '(') ||
                        (next.text === '}' && open.text === '{')))) {
                    next.parent = open.parent;
                    open = open_stack.pop();
                }

                tokens.push(next);
                last = next;
            }

            return tokens;
        }

        function get_directives (text) {
            if (!text.match(directives_block_pattern)) {
                return null;
            }

            var directives = {};
            directive_pattern.lastIndex = 0;
            var directive_match = directive_pattern.exec(text);

            while (directive_match) {
                directives[directive_match[1]] = directive_match[2];
                directive_match = directive_pattern.exec(text);
            }

            return directives;
        }

        function tokenize_next() {
            var i, resulting_string;
            var whitespace_on_this_line = [];

            n_newlines = 0;
            whitespace_before_token = '';

            if (parser_pos >= input_length) {
                return ['', 'TK_EOF'];
            }

            var last_token;
            if (tokens.length) {
                last_token = tokens[tokens.length-1];
            } else {
                // For the sake of tokenizing we can pretend that there was on open brace to start
                last_token = new Token('TK_START_BLOCK', '{');
            }


            var c = input.charAt(parser_pos);
            parser_pos += 1;

            while (in_array(c, whitespace)) {

                if (acorn.newline.test(c)) {
                    if (!(c === '\n' && input.charAt(parser_pos-2) === '\r')) {
                        n_newlines += 1;
                        whitespace_on_this_line = [];
                    }
                } else {
                    whitespace_on_this_line.push(c);
                }

                if (parser_pos >= input_length) {
                    return ['', 'TK_EOF'];
                }

                c = input.charAt(parser_pos);
                parser_pos += 1;
            }

            if(whitespace_on_this_line.length) {
                whitespace_before_token = whitespace_on_this_line.join('');
            }

            if (digit.test(c)) {
                var allow_decimal = true;
                var allow_e = true;
                var local_digit = digit;

                if (c === '0' && parser_pos < input_length && /[Xxo]/.test(input.charAt(parser_pos))) {
                    // switch to hex/oct number, no decimal or e, just hex/oct digits
                    allow_decimal = false;
                    allow_e = false;
                    c += input.charAt(parser_pos);
                    parser_pos += 1;
                    local_digit = /[o]/.test(input.charAt(parser_pos)) ? digit_oct : digit_hex;
                } else {
                    // we know this first loop will run.  It keeps the logic simpler.
                    c = '';
                    parser_pos -= 1;
                }

                // Add the digits
                while (parser_pos < input_length && local_digit.test(input.charAt(parser_pos))) {
                    c += input.charAt(parser_pos);
                    parser_pos += 1;

                    if (allow_decimal && parser_pos < input_length && input.charAt(parser_pos) === '.') {
                        c += input.charAt(parser_pos);
                        parser_pos += 1;
                        allow_decimal = false;
                    }

                    if (allow_e && parser_pos < input_length && /[Ee]/.test(input.charAt(parser_pos))) {
                        c += input.charAt(parser_pos);
                        parser_pos += 1;

                        if (parser_pos < input_length && /[+-]/.test(input.charAt(parser_pos))) {
                            c += input.charAt(parser_pos);
                            parser_pos += 1;
                        }

                        allow_e = false;
                        allow_decimal = false;
                    }
                }

                return [c, 'TK_WORD'];
            }

            if (acorn.isIdentifierStart(input.charCodeAt(parser_pos-1))) {
                if (parser_pos < input_length) {
                    while (acorn.isIdentifierChar(input.charCodeAt(parser_pos))) {
                        c += input.charAt(parser_pos);
                        parser_pos += 1;
                        if (parser_pos === input_length) {
                            break;
                        }
                    }
                }

                if (!(last_token.type === 'TK_DOT' ||
                        (last_token.type === 'TK_RESERVED' && in_array(last_token.text, ['set', 'get'])))
                    && in_array(c, reserved_words)) {
                    if (c === 'in') { // hack for 'in' operator
                        return [c, 'TK_OPERATOR'];
                    }
                    return [c, 'TK_RESERVED'];
                }

                return [c, 'TK_WORD'];
            }

            if (c === '(' || c === '[') {
                return [c, 'TK_START_EXPR'];
            }

            if (c === ')' || c === ']') {
                return [c, 'TK_END_EXPR'];
            }

            if (c === '{') {
                return [c, 'TK_START_BLOCK'];
            }

            if (c === '}') {
                return [c, 'TK_END_BLOCK'];
            }

            if (c === ';') {
                return [c, 'TK_SEMICOLON'];
            }

            if (c === '/') {
                var comment = '';
                // peek for comment /* ... */
                if (input.charAt(parser_pos) === '*') {
                    parser_pos += 1;
                    block_comment_pattern.lastIndex = parser_pos;
                    var comment_match = block_comment_pattern.exec(input);
                    comment = '/*' + comment_match[0];
                    parser_pos += comment_match[0].length;
                    var directives = get_directives(comment);
                    if (directives && directives['ignore'] === 'start') {
                        directives_end_ignore_pattern.lastIndex = parser_pos;
                        comment_match = directives_end_ignore_pattern.exec(input)
                        comment += comment_match[0];
                        parser_pos += comment_match[0].length;
                    }
                    comment = comment.replace(acorn.lineBreak, '\n');
                    return [comment, 'TK_BLOCK_COMMENT', directives];
                }
                // peek for comment // ...
                if (input.charAt(parser_pos) === '/') {
                    parser_pos += 1;
                    comment_pattern.lastIndex = parser_pos;
                    var comment_match = comment_pattern.exec(input);
                    comment = '//' + comment_match[0];
                    parser_pos += comment_match[0].length;
                    return [comment, 'TK_COMMENT'];
                }

            }

            if (c === '`' || c === "'" || c === '"' || // string
                (
                    (c === '/') || // regexp
                    (opts.e4x && c === "<" && input.slice(parser_pos - 1).match(/^<([-a-zA-Z:0-9_.]+|{[^{}]*}|!\[CDATA\[[\s\S]*?\]\])(\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{.*?}))*\s*(\/?)\s*>/)) // xml
                ) && ( // regex and xml can only appear in specific locations during parsing
                    (last_token.type === 'TK_RESERVED' && in_array(last_token.text , ['return', 'case', 'throw', 'else', 'do', 'typeof', 'yield'])) ||
                    (last_token.type === 'TK_END_EXPR' && last_token.text === ')' &&
                        last_token.parent && last_token.parent.type === 'TK_RESERVED' && in_array(last_token.parent.text, ['if', 'while', 'for'])) ||
                    (in_array(last_token.type, ['TK_COMMENT', 'TK_START_EXPR', 'TK_START_BLOCK',
                        'TK_END_BLOCK', 'TK_OPERATOR', 'TK_EQUALS', 'TK_EOF', 'TK_SEMICOLON', 'TK_COMMA'
                    ]))
                )) {

                var sep = c,
                    esc = false,
                    has_char_escapes = false;

                resulting_string = c;

                if (sep === '/') {
                    //
                    // handle regexp
                    //
                    var in_char_class = false;
                    while (parser_pos < input_length &&
                            ((esc || in_char_class || input.charAt(parser_pos) !== sep) &&
                            !acorn.newline.test(input.charAt(parser_pos)))) {
                        resulting_string += input.charAt(parser_pos);
                        if (!esc) {
                            esc = input.charAt(parser_pos) === '\\';
                            if (input.charAt(parser_pos) === '[') {
                                in_char_class = true;
                            } else if (input.charAt(parser_pos) === ']') {
                                in_char_class = false;
                            }
                        } else {
                            esc = false;
                        }
                        parser_pos += 1;
                    }
                } else if (opts.e4x && sep === '<') {
                    //
                    // handle e4x xml literals
                    //
                    var xmlRegExp = /<(\/?)([-a-zA-Z:0-9_.]+|{[^{}]*}|!\[CDATA\[[\s\S]*?\]\])(\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{.*?}))*\s*(\/?)\s*>/g;
                    var xmlStr = input.slice(parser_pos - 1);
                    var match = xmlRegExp.exec(xmlStr);
                    if (match && match.index === 0) {
                        var rootTag = match[2];
                        var depth = 0;
                        while (match) {
                            var isEndTag = !! match[1];
                            var tagName = match[2];
                            var isSingletonTag = ( !! match[match.length - 1]) || (tagName.slice(0, 8) === "![CDATA[");
                            if (tagName === rootTag && !isSingletonTag) {
                                if (isEndTag) {
                                    --depth;
                                } else {
                                    ++depth;
                                }
                            }
                            if (depth <= 0) {
                                break;
                            }
                            match = xmlRegExp.exec(xmlStr);
                        }
                        var xmlLength = match ? match.index + match[0].length : xmlStr.length;
                        xmlStr = xmlStr.slice(0, xmlLength);
                        parser_pos += xmlLength - 1;
                        xmlStr = xmlStr.replace(acorn.lineBreak, '\n');
                        return [xmlStr, "TK_STRING"];
                    }
                } else {
                    //
                    // handle string
                    //
                    // Template strings can travers lines without escape characters.
                    // Other strings cannot
                    while (parser_pos < input_length &&
                            (esc || (input.charAt(parser_pos) !== sep &&
                            (sep === '`' || !acorn.newline.test(input.charAt(parser_pos)))))) {
                        // Handle \r\n linebreaks after escapes or in template strings
                        if ((esc || sep === '`') && acorn.newline.test(input.charAt(parser_pos))) {
                            if (input.charAt(parser_pos) === '\r' && input.charAt(parser_pos + 1) === '\n') {
                                parser_pos += 1;
                            }
                            resulting_string += '\n';
                        } else {
                            resulting_string += input.charAt(parser_pos);
                        }
                        if (esc) {
                            if (input.charAt(parser_pos) === 'x' || input.charAt(parser_pos) === 'u') {
                                has_char_escapes = true;
                            }
                            esc = false;
                        } else {
                            esc = input.charAt(parser_pos) === '\\';
                        }
                        parser_pos += 1;
                    }

                }

                if (has_char_escapes && opts.unescape_strings) {
                    resulting_string = unescape_string(resulting_string);
                }

                if (parser_pos < input_length && input.charAt(parser_pos) === sep) {
                    resulting_string += sep;
                    parser_pos += 1;

                    if (sep === '/') {
                        // regexps may have modifiers /regexp/MOD , so fetch those, too
                        // Only [gim] are valid, but if the user puts in garbage, do what we can to take it.
                        while (parser_pos < input_length && acorn.isIdentifierStart(input.charCodeAt(parser_pos))) {
                            resulting_string += input.charAt(parser_pos);
                            parser_pos += 1;
                        }
                    }
                }
                return [resulting_string, 'TK_STRING'];
            }

            if (c === '#') {

                if (tokens.length === 0 && input.charAt(parser_pos) === '!') {
                    // shebang
                    resulting_string = c;
                    while (parser_pos < input_length && c !== '\n') {
                        c = input.charAt(parser_pos);
                        resulting_string += c;
                        parser_pos += 1;
                    }
                    return [trim(resulting_string) + '\n', 'TK_UNKNOWN'];
                }



                // Spidermonkey-specific sharp variables for circular references
                // https://developer.mozilla.org/En/Sharp_variables_in_JavaScript
                // http://mxr.mozilla.org/mozilla-central/source/js/src/jsscan.cpp around line 1935
                var sharp = '#';
                if (parser_pos < input_length && digit.test(input.charAt(parser_pos))) {
                    do {
                        c = input.charAt(parser_pos);
                        sharp += c;
                        parser_pos += 1;
                    } while (parser_pos < input_length && c !== '#' && c !== '=');
                    if (c === '#') {
                        //
                    } else if (input.charAt(parser_pos) === '[' && input.charAt(parser_pos + 1) === ']') {
                        sharp += '[]';
                        parser_pos += 2;
                    } else if (input.charAt(parser_pos) === '{' && input.charAt(parser_pos + 1) === '}') {
                        sharp += '{}';
                        parser_pos += 2;
                    }
                    return [sharp, 'TK_WORD'];
                }
            }

            if (c === '<' && (input.charAt(parser_pos) === '?' || input.charAt(parser_pos) === '%')) {
                template_pattern.lastIndex = parser_pos - 1;
                var template_match = template_pattern.exec(input);
                if(template_match) {
                    c = template_match[0];
                    parser_pos += c.length - 1;
                    c = c.replace(acorn.lineBreak, '\n');
                    return [c, 'TK_STRING'];
                }
            }

            if (c === '<' && input.substring(parser_pos - 1, parser_pos + 3) === '<!--') {
                parser_pos += 3;
                c = '<!--';
                while (!acorn.newline.test(input.charAt(parser_pos)) && parser_pos < input_length) {
                    c += input.charAt(parser_pos);
                    parser_pos++;
                }
                in_html_comment = true;
                return [c, 'TK_COMMENT'];
            }

            if (c === '-' && in_html_comment && input.substring(parser_pos - 1, parser_pos + 2) === '-->') {
                in_html_comment = false;
                parser_pos += 2;
                return ['-->', 'TK_COMMENT'];
            }

            if (c === '.') {
                return [c, 'TK_DOT'];
            }

            if (in_array(c, punct)) {
                while (parser_pos < input_length && in_array(c + input.charAt(parser_pos), punct)) {
                    c += input.charAt(parser_pos);
                    parser_pos += 1;
                    if (parser_pos >= input_length) {
                        break;
                    }
                }

                if (c === ',') {
                    return [c, 'TK_COMMA'];
                } else if (c === '=') {
                    return [c, 'TK_EQUALS'];
                } else {
                    return [c, 'TK_OPERATOR'];
                }
            }

            return [c, 'TK_UNKNOWN'];
        }


        function unescape_string(s) {
            var esc = false,
                out = '',
                pos = 0,
                s_hex = '',
                escaped = 0,
                c;

            while (esc || pos < s.length) {

                c = s.charAt(pos);
                pos++;

                if (esc) {
                    esc = false;
                    if (c === 'x') {
                        // simple hex-escape \x24
                        s_hex = s.substr(pos, 2);
                        pos += 2;
                    } else if (c === 'u') {
                        // unicode-escape, \u2134
                        s_hex = s.substr(pos, 4);
                        pos += 4;
                    } else {
                        // some common escape, e.g \n
                        out += '\\' + c;
                        continue;
                    }
                    if (!s_hex.match(/^[0123456789abcdefABCDEF]+$/)) {
                        // some weird escaping, bail out,
                        // leaving whole string intact
                        return s;
                    }

                    escaped = parseInt(s_hex, 16);

                    if (escaped >= 0x00 && escaped < 0x20) {
                        // leave 0x00...0x1f escaped
                        if (c === 'x') {
                            out += '\\x' + s_hex;
                        } else {
                            out += '\\u' + s_hex;
                        }
                        continue;
                    } else if (escaped === 0x22 || escaped === 0x27 || escaped === 0x5c) {
                        // single-quote, apostrophe, backslash - escape these
                        out += '\\' + String.fromCharCode(escaped);
                    } else if (c === 'x' && escaped > 0x7e && escaped <= 0xff) {
                        // we bail out on \x7f..\xff,
                        // leaving whole string escaped,
                        // as it's probably completely binary
                        return s;
                    } else {
                        out += String.fromCharCode(escaped);
                    }
                } else if (c === '\\') {
                    esc = true;
                } else {
                    out += c;
                }
            }
            return out;
        }

    }

    /* jshint ignore:end */
    /* jscs:enable */

    return {
      run: run
    }
  };

}));
