/*jshint maxerr:10000, eqnull:true */
/**
 * HTML beautify by Morgan Yarbrough
 * This was made as a quick hack by working with the ace builds repo.
 * The source of this lib is the Ace.Tern repo and its copied to Caret.Tern
 * Not to be confused with the beautify extension included with ace that seems to be severly lacking.
 * This code works to beautify xml, html, css, javascript, and json.
 * Also includes command that removes all unncessary blank and EOL space (does not have any intelligence like a uglifier).
 *
 * How to update: read comments above each ace.define section for how to update each
 */
ace.define('ace/ext/html_beautify', ['require', 'exports', 'module', 'ace/range', 'ace/editor', 'ace/config'], function(require, exports, module) {

    var config = require("../config");
    var Range = ace.require("ace/range").Range;
    var Editor = require("../editor").Editor;

    /**
     * (ghetto) contains js, html, and css beautify scripts hard coded
     */
    var beautifiers = {
        css_beautify: require('css_beautify').css_beautify,
        html_beautify: require('html_beautify').html_beautify,
        js_beautify: require('js_beautify').js_beautify,
    };


    /**
     * @returns {bool} true if window.debugBeautify is true (allows enabling debug via console)
     */
    function d() {
        try {
            if (window.debugBeautify) {
                if (!window.beautifiers) { //if debug, set global var once for accessing this
                    window.beautifiers = beautifiers;
                    console.info('use window.beautifiers to test beautifer execution');
                }
                return true;
            }
        }
        catch (ex) {
            console.log('error getting debug for html beautifer');
        }
        return false;
    }
    try {
        if (!window.debugBeautify) window.debugBeautify = false; //set once so that console intellisense can pickup
        console.info('%c set window.debugBeautify=true; to debug beautifer (built into ace via custom extension)', 'color:#2B64A7;');
    }
    catch (ex) {
        console.log('non-critial error in trying to setup debugging', ex);
    }


    /**
     * beautify options. Export to allow modifying options
     */
    exports.options = {
        space_before_conditional: true,
        keep_array_indentation: false,
        preserve_newlines: true,
        jslint_happy: false,
        indent_char: ' ',
        max_preserve_newlines: 3,
        break_chained_methods: false,
        indent_scripts: 'normal',
        brace_style: 'end-expand,preserve-inline' /*[collapse|expand|end-expand|none] any of the former + ",preserve-inline"*/ ,
        unescape_strings: false,
        wrap_line_length: '0',
        space_after_anon_function: false,
        max_char: 0 //html beautifys wrap option
    };
    exports.options.preserve_newlines = exports.options.max_preserve_newlines !== -1;

    /**
     * @returns {string} mode at cursor position (examples: javascript|html|css)
     * @param {editor} editor - editor instance
     * @param {bool} [allowNestedMode=false] - pass true return nested mode if in mixed html mode
     */
    function getCurrentMode(editor, allowNestedMode) {
        var scope = editor.session.$mode.$id || "";
        scope = scope.split("/").pop();
        if (scope === "html" && allowNestedMode) {
            var temp = getNestedModeforRow(editor.getCursorPosition().row);
            if (temp != '') return temp;
        }
        return scope;
    }

    /**
     * @returns {string} nested mode for passed row (if any) or empty string
     * @param {int} rowNum - row number
     * @note for css and javascript nested in html only
     */
    function getNestedModeforRow(rowNum) {
        var state = editor.session.getState(rowNum);
        if (typeof state === "object") state = state[0];

        if (state.substring) {
            if (state.substring(0, 3) == "js-") return "javascript";
            else if (state.substring(0, 4) == "css-") return "css";
        }
        return '';
    }

    /**
     * executes beautify on currently selected code or all code if nothing is selected
     * @param {editor} editor
     * @param {bool} [unselect=false] - pass true to unselect the selection after execution
     * @param {bool} [removeBlanks=false] - pass true to remove unnecessary blank and EOL space instead of beautify (same as NotePad++ command)
     * @param {object} [overrideOptions] - beautify options to override for this call
     */
    function beautify(editor, unselect, removeBlanks, overrideOptions) {
        function clone(obj) {
            if (null == obj || "object" != typeof obj) return obj;
            var copy = obj.constructor();
            for (var attr in obj) {
                if (obj.hasOwnProperty(attr)) copy[attr] = obj[attr];
            }
            return copy;
        }


        //#region determine range to beautify
        var sel = editor.selection;
        var session = editor.session;
        var range = sel.getRange();
        //if nothing is selected, then select all
        var formatAll = false;
        var originalRangeStart = editor.selection.getRange().start;
        if (range.start.row === range.end.row && range.start.column === range.end.column) {
            range.start.row = 0;
            range.start.column = 0;
            var lastLine = editor.session.getLength() - 1;
            range.end.row = lastLine;
            range.end.column = editor.session.getLine(lastLine).length;
            formatAll = true;
        }
        //#endregion


        //#region beautify options
        var trim = false;
        var indent;
        var options = clone(exports.options);

        if (!removeBlanks) {
            if (session.getUseSoftTabs()) {
                options.indent_char = " ";
                options.indent_size = session.getTabSize();
            }
            else {
                options.indent_char = "\t";
                options.indent_size = 1;
            }
            var line = session.getLine(range.start.row);
            indent = line.match(/^\s*/)[0];

            if (range.start.column < indent.length) range.start.column = 0;
            else trim = true;
        }
        //override options for this call
        if (overrideOptions != null) {
            for (var k in overrideOptions) {
                options[k] = overrideOptions[k];
            }
        }
        //#endregion


        //#region get value, set mode
        var value = session.getTextRange(range);
        var originalValue = value; //for debugging
        var type = null;
        var detectedMode;
        if (!removeBlanks) {
            detectedMode = getCurrentMode(editor, false);

            //for html, allow using a nested formatter if the entire range is nested (css and javascript only)
            if (detectedMode == "html") {
                if (!formatAll) { //if formatting all then entire thing wont be the nested mode
                    var nestedMode = getCurrentMode(editor, true);
                    if (['javascript', 'css'].indexOf(nestedMode) !== -1) {
                        var useNested = true;
                        for (var i = range.start.row; i < range.end.row; i++) {
                            if (getNestedModeforRow(i) != nestedMode) {
                                useNested = false;
                                break;
                            }
                        }
                        if (useNested) detectedMode = nestedMode;
                    }
                }
            }

            //do some mode conversions
            if (['json', 'javascript'].indexOf(detectedMode) !== -1) type = "js";
            else if (detectedMode == "xml") type = "html";
            else type = detectedMode;
        }
        //#endregion


        //#region execute beautify
        var standardNewLineChar = '\n',
            editorNewLineChar = session.doc.getNewLineCharacter(),
            needToNormalize = standardNewLineChar != editorNewLineChar;
        try {
            if (removeBlanks) {
                value = value.replace(/\s+/g, " ").trim();
            }
            else {
                value = beautifiers[type + "_beautify"](value, options);

                if (d()) {
                    console.log('executed beautifier: ' + type, '\n function:', beautifiers[type + "_beautify"], '\n options:', options, '\n originalValue:\n', originalValue, '\n new value:\n', value, '\n originalValue-whitespace:\n', showWhiteSpace(originalValue), '\n new value-whitespace:\n', showWhiteSpace(value));
                }


                if (trim) {
                    //PROBLEM: the replacment below that adds indent to start of each line does not work properly if newline char is \r\n. Solution is to normalize line breaks (convert to \n), then convert back after the replacment
                    if (needToNormalize) value = value.replace(new RegExp(editorNewLineChar, 'g'), standardNewLineChar);

                    value = value.replace(/^/gm, indent).trim(); //add indentation back to start of each line

                    if (needToNormalize) value = value.replace(new RegExp(standardNewLineChar, 'g'), editorNewLineChar);

                    if (d()) console.log('trimmed value:\n', showWhiteSpace(value), '\nindent:\n', showWhiteSpace(indent));
                }
                if (range.end.column === 0) {
                    value += editorNewLineChar + indent;
                    if (d()) console.log('indented value:\n', showWhiteSpace(value));
                }

            }
        }
        catch (ex) {
            console.log('beautify error', ex);
            window.alert("Error: This code could not be beautified; " + detectedMode + " is not supported yet");
            return;
        }
        //#endregion


        //#region update editor value
        if (!formatAll) {
            var end = session.replace(range, value);
            if (unselect) {
                sel.setSelectionRange(Range.fromPoints(end, end));
            }
            else {
                sel.setSelectionRange(Range.fromPoints(range.start, end));
            }
        }
        else {
            session.replace(range, value);
            sel.setSelectionRange(Range.fromPoints(originalRangeStart, originalRangeStart));
        }
        //#endregion
    }

    /**
     * handlers for onAfterExec to auto beautify
     */
    function onAfterExec_Beautify(e) {
        if (e.command.name === "insertstring" && e.args === "}") {
            var m = getCurrentMode(editor, true);
            if (m !== 'javascript' && m !== 'css') {
                return;
            }
            var pos = editor.getSelectionRange().end;
            var tok = editor.session.getTokenAt(pos.row, pos.column);
            if (tok) {
                if (tok.type !== 'string' && tok.type.toString().indexOf('comment') === -1) {
                    //bracket just inserted - move back one character before jumpting to matching or it wont work correctly (executing it after the newly inserted char can cause issues in some instances)
                    var start = editor.selection.getRange().start;
                    start.column--;
                    editor.selection.setSelectionRange(Range.fromPoints(start, start));
                    editor.jumpToMatching(true); //jumpto and select

                    //now move end of selection back one char, to include the newly inserted bracket, and start of selection one char to include start bracket
                    var end = editor.selection.getRange().end;
                    end.column++;
                    start = editor.selection.getRange().start;
                    start.column--;
                    editor.selection.setSelectionRange(Range.fromPoints(start, end));

                    //now beautify the selection
                    editor.execCommand('beautify', true);
                }
            }
        }
    }

    /**
     * for debugging: transforms whitespace characters (line breaks, tabs, and 2 or more concurrent spaces) into characters that can be read
     */
    function showWhiteSpace(s) {
        if (s == null) return s;

        if (s == " ") {
            //special case: if string is exactly one space, then convert it to a value that shows us this
            return "[1space]";
        }

        //note: order of replacments is important
        s = s.replace(new RegExp("\r\n", 'g'), "[/r/n]");
        s = s.replace(new RegExp("\r", 'g'), "[/r]"); //there can be a standalone /r
        s = s.replace(new RegExp("\n", 'g'), "[/n]");
        s = s.replace(new RegExp("\t", 'g'), "[/t]");
        s = s.replace(new RegExp("  ", 'g'), "[2space]");
        return s;
    }
    

    config.defineOptions(Editor.prototype, "editor", {
        autoBeautify: {
            set: function(val) {
                if (val) this.commands.on('afterExec', onAfterExec_Beautify);
                else this.commands.off('afterExec', onAfterExec_Beautify);
            },
            value: false
        },
        /**
         * this call is required to turn the plugin on (because it needs the editor variable - which is what this is scoped to below)
         */
        htmlBeautify: {
            set: function(val) {
                if (!val) {
                    this.commands.removeCommand('beautify');
                    this.commands.removeCommand('removeBlank');
                    return;
                }
                this.commands.addCommand({
                    name: 'beautify',
                    bindKey: {
                        mac: "Command-B",
                        win: "Ctrl-B"
                    },
                    exec: beautify,
                    readOnly: false,
                });

                //quick hack: alternate beauitfy that does end expand (because end expand is always desired when beautifing minified file)
                //UPDATE: currently not in use... (reverted default to end-expand)
                this.commands.addCommand({
                    name: 'beautifyEndExpand',
                    bindKey: {
                        mac: "Command-Alt-B",
                        win: "Ctrl-Alt-B"
                    },
                    exec: function(editor) {
                        beautify(editor, false, false, {
                            brace_style: 'end-expand'
                        });
                    },
                    readOnly: false,
                });

                this.commands.addCommand({
                    name: 'removeBlank',
                    bindKey: {
                        mac: "Command-Shift-B",
                        win: "Ctrl-Shift-B"
                    },
                    exec: function(editor) {
                        beautify(editor, false, true);
                    },
                    readOnly: false
                });
            },
            value: false
        }
    });


    //allow using some things outside of this scope mainly for testing
    exports.getCurrentMode = getCurrentMode;
    exports.beautifiers = beautifiers;
    exports.beautify = beautify;
});

/**
 * 3 blocks below were copied manually, and each have a slight modificaiton to make them work with ace's loader.
 * the modification is in the custom for ace region
 * To update these, use the url at the top of each, copy and pase the contents, and put the custom for ace region back in place
 */


/**
 * @version 1.6.8
 * @Updated 2016.01.04
 * @link https://raw.githubusercontent.com/beautify-web/js-beautify/master/js/lib/beautify.js
 */
ace.define('js_beautify', ['require', 'exports', 'module'], function(require, exports, module) {
    /*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
    /*

      The MIT License (MIT)

      Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

      Permission is hereby granted, free of charge, to any person
      obtaining a copy of this software and associated documentation files
      (the "Software"), to deal in the Software without restriction,
      including without limitation the rights to use, copy, modify, merge,
      publish, distribute, sublicense, and/or sell copies of the Software,
      and to permit persons to whom the Software is furnished to do so,
      subject to the following conditions:

      The above copyright notice and this permission notice shall be
      included in all copies or substantial portions of the Software.

      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
      BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
      ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
      CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      SOFTWARE.

     JS Beautifier
    ---------------


      Written by Einar Lielmanis, <einar@jsbeautifier.org>
          http://jsbeautifier.org/

      Originally converted to javascript by Vital, <vital76@gmail.com>
      "End braces on own line" added by Chris J. Shull, <chrisjshull@gmail.com>
      Parsing improvements for brace-less statements by Liam Newman <bitwiseman@gmail.com>


      Usage:
        js_beautify(js_source_text);
        js_beautify(js_source_text, options);

      The options are:
        indent_size (default 4)          - indentation size,
        indent_char (default space)      - character to indent with,
        preserve_newlines (default true) - whether existing line breaks should be preserved,
        max_preserve_newlines (default unlimited) - maximum number of line breaks to be preserved in one chunk,

        jslint_happy (default false) - if true, then jslint-stricter mode is enforced.

                jslint_happy        !jslint_happy
                ---------------------------------
                function ()         function()

                switch () {         switch() {
                case 1:               case 1:
                  break;                break;
                }                   }

        space_after_anon_function (default false) - should the space before an anonymous function's parens be added, "function()" vs "function ()",
              NOTE: This option is overriden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)

        brace_style (default "collapse") - "collapse" | "expand" | "end-expand" | "none" | any of the former + ",preserve-inline"
                put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.
                preserve-inline will try to preserve inline blocks of curly braces

        space_before_conditional (default true) - should the space before conditional statement be added, "if(true)" vs "if (true)",

        unescape_strings (default false) - should printable characters in strings encoded in \xNN notation be unescaped, "example" vs "\x65\x78\x61\x6d\x70\x6c\x65"

        wrap_line_length (default unlimited) - lines should wrap at next opportunity after this number of characters.
              NOTE: This is not a hard limit. Lines will continue until a point where a newline would
                    be preserved if it were present.

        end_with_newline (default false)  - end output with a newline


        e.g

        js_beautify(js_source_text, {
          'indent_size': 1,
          'indent_char': '\t'
        });

    */

    // Object.values polyfill found here:
    // http://tokenposts.blogspot.com.au/2012/04/javascript-objectkeys-browser.html
    if (!Object.values) {
        Object.values = function(o) {
            if (o !== Object(o)) {
                throw new TypeError('Object.values called on a non-object');
            }
            var k = [],
                p;
            for (p in o) {
                if (Object.prototype.hasOwnProperty.call(o, p)) {
                    k.push(o[p]);
                }
            }
            return k;
        };
    }

    (function() {

        function mergeOpts(allOptions, targetType) {
            var finalOpts = {};
            var name;

            for (name in allOptions) {
                if (name !== targetType) {
                    finalOpts[name] = allOptions[name];
                }
            }

            //merge in the per type settings for the targetType
            if (targetType in allOptions) {
                for (name in allOptions[targetType]) {
                    finalOpts[name] = allOptions[targetType][name];
                }
            }
            return finalOpts;
        }

        function js_beautify(js_source_text, options) {

            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);
            /* jshint curly: true */

            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 sanitizeOperatorPosition(opPosition) {
                opPosition = opPosition || OPERATOR_POSITION.before_newline;

                var validPositionValues = Object.values(OPERATOR_POSITION);

                if (!in_array(opPosition, validPositionValues)) {
                    throw new Error("Invalid Option Value: The option 'operator_position' must be one of the following values\n" +
                        validPositionValues +
                        "\nYou passed in: '" + opPosition + "'");
                }

                return opPosition;
            }

            var OPERATOR_POSITION = {
                before_newline: 'before-newline',
                after_newline: 'after-newline',
                preserve_newline: 'preserve-newline',
            };

            var OPERATOR_POSITION_BEFORE_OR_PRESERVE = [OPERATOR_POSITION.before_newline, OPERATOR_POSITION.preserve_newline];

            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) {
                "use strict";
                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,
                        inline_frame: false,
                        if_block: false,
                        else_block: false,
                        do_block: false,
                        do_while: false,
                        import_block: 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 : {};

                // Allow the setting of language/file-type specific options
                // with inheritance of overall settings
                options = mergeOpts(options, 'js');

                opt = {};

                // compatibility, re
                if (options.brace_style === "expand-strict") { //graceful handling of deprecated option
                    options.brace_style = "expand";
                }
                else if (options.brace_style === "collapse-preserve-inline") { //graceful handling of deprecated option
                    options.brace_style = "collapse,preserve-inline";
                }
                else if (options.braces_on_own_line !== undefined) { //graceful handling of deprecated option
                    options.brace_style = options.braces_on_own_line ? "expand" : "collapse";
                }
                else if (!options.brace_style) //Nothing exists to set it
                {
                    options.brace_style = "collapse";
                }


                var brace_style_split = options.brace_style.split(/[^a-zA-Z0-9_\-]+/);
                opt.brace_style = brace_style_split[0];
                opt.brace_preserve_inline = brace_style_split[1] ? brace_style_split[1] : false;

                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 : 'auto';
                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;
                opt.operator_position = sanitizeOperatorPosition(options.operator_position);

                // 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;
                }

                if (opt.eol === 'auto') {
                    opt.eol = '\n';
                    if (js_source_text && acorn.lineBreak.test(js_source_text || '')) {
                        opt.eol = js_source_text.match(acorn.lineBreak)[0];
                    }
                }

                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 sweet_code;
                    Tokenizer = new tokenizer(js_source_text, opt, indent_string);
                    tokens = Tokenizer.tokenize();
                    token_pos = 0;

                    current_token = get_token();
                    while (current_token) {
                        handlers[current_token.type]();

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

                        token_pos += 1;
                        current_token = get_token();
                    }

                    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_whitespace_and_comments(local_token, preserve_statement_flags) {
                    var newlines = local_token.newlines;
                    var keep_whitespace = opt.keep_array_indentation && is_array(flags.mode);
                    var temp_token = current_token;

                    for (var h = 0; h < local_token.comments_before.length; h++) {
                        // 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.
                        current_token = local_token.comments_before[h];
                        handle_whitespace_and_comments(current_token, preserve_statement_flags);
                        handlers[current_token.type](preserve_statement_flags);
                    }
                    current_token = temp_token;

                    if (keep_whitespace) {
                        for (var i = 0; i < newlines; i += 1) {
                            print_newline(i > 0, preserve_statement_flags);
                        }
                    }
                    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(false, preserve_statement_flags);
                                for (var j = 1; j < newlines; j += 1) {
                                    print_newline(true, preserve_statement_flags);
                                }
                            }
                        }
                    }

                }

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

                    s = s.replace(acorn.allLineBreaks, '\n');
                    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;
                }

                var newline_restricted_tokens = ['break', 'continue', 'return', 'throw'];

                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;
                    }

                    var shouldPreserveOrForce = (opt.preserve_newlines && current_token.wanted_newline) || force_linewrap;
                    var operatorLogicApplies = in_array(flags.last_text, Tokenizer.positionable_operators) || in_array(current_token.text, Tokenizer.positionable_operators);

                    if (operatorLogicApplies) {
                        var shouldPrintOperatorNewline = (
                                in_array(flags.last_text, Tokenizer.positionable_operators) &&
                                in_array(opt.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)
                            ) ||
                            in_array(current_token.text, Tokenizer.positionable_operators);
                        shouldPreserveOrForce = shouldPreserveOrForce && shouldPrintOperatorNewline;
                    }

                    if (shouldPreserveOrForce) {
                        print_newline(false, true);
                    }
                    else if (opt.wrap_line_length) {
                        if (last_type === 'TK_RESERVED' && in_array(flags.last_text, newline_restricted_tokens)) {
                            // These tokens should never have a newline inserted
                            // between them and the following expression.
                            return;
                        }
                        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') {
                            var next_token = get_token(1);
                            while (flags.mode === MODE.Statement &&
                                !(flags.if_block && next_token && next_token.type === 'TK_RESERVED' && next_token.text === 'else') &&
                                !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() === ',') {
                            var popped = output.previous_line.pop();
                            // if the comma was already at the start of the line,
                            // pull back onto that line and reprint the indentation
                            if (output.previous_line.is_empty()) {
                                output.previous_line.push(popped);
                                output.trim(true);
                                output.current_line.pop();
                                output.trim();
                            }

                            // add the comma in front of the next token
                            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' && in_array(flags.last_text, ['return', 'throw']) && !current_token.wanted_newline) ||
                        (last_type === 'TK_RESERVED' && flags.last_text === 'else' &&
                            !(current_token.type === 'TK_RESERVED' && current_token.text === 'if' && !current_token.comments_before.length)) ||
                        (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();

                        handle_whitespace_and_comments(current_token, 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() {
                    // The conditional starts the statement if appropriate.
                    if (!start_of_statement()) {
                        handle_whitespace_and_comments(current_token);
                    }

                    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 === '*' &&
                            (in_array(last_last_text, ['function', 'yield']) ||
                                (flags.mode === MODE.ObjectLiteral && in_array(last_last_text, ['{', ',']))))) {
                        // function() vs function ()
                        // yield*() vs yield* ()
                        // 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();
                            }
                        }
                    }

                    // Support preserving wrapped arrow function expressions
                    // a.b('c',
                    //     () => d.e
                    // )
                    if (current_token.text === '(' && last_type !== 'TK_WORD' && last_type !== 'TK_RESERVED') {
                        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();
                    }

                    handle_whitespace_and_comments(current_token);

                    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() {
                    handle_whitespace_and_comments(current_token);

                    // 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 && (
                            (in_array(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 if (last_type === 'TK_OPERATOR' && flags.last_text === '=>') {
                        // arrow function: (param1, paramN) => { statements }
                        set_mode(MODE.BlockStatement);
                    }
                    else if (in_array(last_type, ['TK_EQUALS', 'TK_START_EXPR', 'TK_COMMA', 'TK_OPERATOR']) ||
                        (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['return', 'throw', 'import', 'default']))
                    ) {
                        // Detecting shorthand function syntax is difficult by scanning forward,
                        //     so check the surrounding context.
                        // If the block is being returned, imported, export default, passed as arg,
                        //     assigned with = or assigned in a nested object, treat as an ObjectLiteral.
                        set_mode(MODE.ObjectLiteral);
                    }
                    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_preserve_inline) // check for inline, set inline_frame if so
                    {
                        // search forward for a newline wanted inside this block
                        var index = 0;
                        var check_token = null;
                        flags.inline_frame = true;
                        do {
                            index += 1;
                            check_token = get_token(index);
                            if (check_token.wanted_newline) {
                                flags.inline_frame = false;
                                break;
                            }
                        } while (check_token.type !== 'TK_EOF' &&
                            !(check_token.type === 'TK_END_BLOCK' && check_token.opened === current_token));
                    }

                    if ((opt.brace_style === "expand" ||
                            (opt.brace_style === "none" && current_token.wanted_newline)) &&
                        !flags.inline_frame) {
                        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 || inline_frame
                        if (is_array(previous_flags.mode) && (last_type === 'TK_START_EXPR' || last_type === 'TK_COMMA')) {
                            if (last_type === 'TK_COMMA' || opt.space_in_paren) {
                                output.space_before_token = true;
                            }

                            if (last_type === 'TK_COMMA' || (last_type === 'TK_START_EXPR' && flags.inline_frame)) {
                                allow_wrap_or_preserved_newline();
                                previous_flags.multiline_frame = previous_flags.multiline_frame || flags.multiline_frame;
                                flags.multiline_frame = false;
                            }
                        }
                        if (last_type !== 'TK_OPERATOR' && last_type !== 'TK_START_EXPR') {
                            if (last_type === 'TK_START_BLOCK' && !flags.inline_frame) {
                                print_newline();
                            }
                            else {
                                output.space_before_token = true;
                            }
                        }
                    }
                    print_token();
                    indent();
                }

                function handle_end_block() {
                    // statements must all be closed when their container closes
                    handle_whitespace_and_comments(current_token);

                    while (flags.mode === MODE.Statement) {
                        restore_mode();
                    }

                    var empty_braces = last_type === 'TK_START_BLOCK';

                    if (flags.inline_frame && !empty_braces) { // try inline_frame (only set if opt.braces-preserve-inline) first
                        output.space_before_token = true;
                    }
                    else 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') {
                        if (in_array(current_token.text, ['set', 'get']) && flags.mode !== MODE.ObjectLiteral) {
                            current_token.type = 'TK_WORD';
                        }
                        else if (in_array(current_token.text, ['as', 'from']) && !flags.import_block) {
                            current_token.type = 'TK_WORD';
                        }
                        else if (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.
                        if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && current_token.type === 'TK_WORD') {
                            flags.declaration_statement = true;
                        }
                    }
                    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'])))) {
                        handle_whitespace_and_comments(current_token);
                        print_newline();
                    }
                    else {
                        handle_whitespace_and_comments(current_token);
                    }

                    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 (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' && current_token.text === 'function') {
                        if (in_array(flags.last_text, ['}', ';']) ||
                            (output.just_added_newline() && !(in_array(flags.last_text, ['(', '[', '{', ':', '=', ',']) || last_type === 'TK_OPERATOR'))) {
                            // 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();
                        }

                        print_token();
                        flags.last_word = current_token.text;
                        return;
                    }

                    prefix = 'NONE';

                    if (last_type === 'TK_END_BLOCK') {

                        if (previous_flags.inline_frame) {
                            prefix = 'SPACE';
                        }
                        else if (!(current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['else', 'catch', 'finally', 'from']))) {
                            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 === '*' &&
                            (in_array(last_last_text, ['function', 'yield']) ||
                                (flags.mode === MODE.ObjectLiteral && in_array(last_last_text, ['{', ',']))))) {
                        prefix = 'SPACE';
                    }
                    else if (last_type === 'TK_START_BLOCK') {
                        if (flags.inline_frame) {
                            prefix = 'SPACE';
                        }
                        else {
                            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.inline_frame || 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' && previous_flags.mode === MODE.BlockStatement) ||
                                opt.brace_style === "expand" ||
                                opt.brace_style === "end-expand" ||
                                (opt.brace_style === "none" && current_token.wanted_newline)) &&
                            !flags.inline_frame) {
                            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') {
                        if (current_token.text === 'do') {
                            flags.do_block = true;
                        }
                        else if (current_token.text === 'if') {
                            flags.if_block = true;
                        }
                        else if (current_token.text === 'import') {
                            flags.import_block = true;
                        }
                        else if (flags.import_block && current_token.type === 'TK_RESERVED' && current_token.text === 'from') {
                            flags.import_block = false;
                        }
                    }
                }

                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;
                    }
                    else {
                        handle_whitespace_and_comments(current_token);
                    }

                    var next_token = get_token(1);
                    while (flags.mode === MODE.Statement &&
                        !(flags.if_block && next_token && next_token.type === 'TK_RESERVED' && next_token.text === 'else') &&
                        !flags.do_block) {
                        restore_mode();
                    }

                    // hacky but effective for the moment
                    if (flags.import_block) {
                        flags.import_block = false;
                    }
                    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 {
                        handle_whitespace_and_comments(current_token);
                        if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD' || flags.inline_frame) {
                            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.
                    }
                    else {
                        handle_whitespace_and_comments(current_token);
                    }

                    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() {
                    handle_whitespace_and_comments(current_token, true);

                    print_token();
                    output.space_before_token = true;
                    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;
                        }

                        if (flags.declaration_assignment) {
                            flags.declaration_assignment = false;
                            print_newline(false, true);
                        }
                        else if (opt.comma_first) {
                            // 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
                            allow_wrap_or_preserved_newline();
                        }
                    }
                    else if (flags.mode === MODE.ObjectLiteral ||
                        (flags.mode === MODE.Statement && flags.parent.mode === MODE.ObjectLiteral)) {
                        if (flags.mode === MODE.Statement) {
                            restore_mode();
                        }

                        if (!flags.inline_frame) {
                            print_newline();
                        }
                    }
                    else if (opt.comma_first) {
                        // EXPR or DO_BLOCK
                        // 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
                        allow_wrap_or_preserved_newline();
                    }
                }

                function handle_operator() {
                    var isGeneratorAsterisk = current_token.text === '*' &&
                        ((last_type === 'TK_RESERVED' && in_array(flags.last_text, ['function', 'yield'])) ||
                            (in_array(last_type, ['TK_START_BLOCK', 'TK_COMMA', 'TK_END_BLOCK', 'TK_SEMICOLON']))
                        );
                    var isUnary = 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 === ','
                    );

                    if (start_of_statement()) {
                        // The conditional starts the statement if appropriate.
                    }
                    else {
                        var preserve_statement_flags = !isGeneratorAsterisk;
                        handle_whitespace_and_comments(current_token, preserve_statement_flags);
                    }

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

                    // Allow line wrapping between operators when operator_position is
                    //   set to before or preserve
                    if (last_type === 'TK_OPERATOR' && in_array(opt.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
                        allow_wrap_or_preserved_newline();
                    }

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

                    var space_before = true;
                    var space_after = true;
                    var in_ternary = false;
                    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;
                            in_ternary = true;
                        }
                    }
                    else if (current_token.text === '?') {
                        flags.ternary_depth += 1;
                    }

                    // let's handle the operator_position option prior to any conflicting logic
                    if (!isUnary && !isGeneratorAsterisk && opt.preserve_newlines && in_array(current_token.text, Tokenizer.positionable_operators)) {
                        var isColon = current_token.text === ':';
                        var isTernaryColon = (isColon && in_ternary);
                        var isOtherColon = (isColon && !in_ternary);

                        switch (opt.operator_position) {
                            case OPERATOR_POSITION.before_newline:
                                // if the current token is : and it's not a ternary statement then we set space_before to false
                                output.space_before_token = !isOtherColon;

                                print_token();

                                if (!isColon || isTernaryColon) {
                                    allow_wrap_or_preserved_newline();
                                }

                                output.space_before_token = true;
                                return;

                            case OPERATOR_POSITION.after_newline:
                                // if the current token is anything but colon, or (via deduction) it's a colon and in a ternary statement,
                                //   then print a newline.

                                output.space_before_token = true;

                                if (!isColon || isTernaryColon) {
                                    if (get_token(1).wanted_newline) {
                                        print_newline(false, true);
                                    }
                                    else {
                                        allow_wrap_or_preserved_newline();
                                    }
                                }
                                else {
                                    output.space_before_token = false;
                                }

                                print_token();

                                output.space_before_token = true;
                                return;

                            case OPERATOR_POSITION.preserve_newline:
                                if (!isOtherColon) {
                                    allow_wrap_or_preserved_newline();
                                }

                                // if we just added a newline, or the current token is : and it's not a ternary statement,
                                //   then we set space_before to false
                                space_before = !(output.just_added_newline() || isOtherColon);

                                output.space_before_token = space_before;
                                print_token();
                                output.space_before_token = true;
                                return;
                        }
                    }

                    if (isGeneratorAsterisk) {
                        allow_wrap_or_preserved_newline();
                        space_before = false;
                        var next_token = get_token(1);
                        space_after = next_token && in_array(next_token.type, ['TK_WORD', 'TK_RESERVED']);
                    }
                    else if (current_token.text === '...') {
                        allow_wrap_or_preserved_newline();
                        space_before = last_type === 'TK_START_BLOCK';
                        space_after = false;
                    }
                    else if (in_array(current_token.text, ['--', '++', '!', '~']) || isUnary) {
                        // 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.inline_frame) || flags.mode === MODE.Statement) &&
                            (flags.last_text === '{' || flags.last_text === ';')) {
                            // { foo; --i }
                            // foo(); --bar;
                            print_newline();
                        }
                    }

                    output.space_before_token = output.space_before_token || space_before;
                    print_token();
                    output.space_before_token = space_after;
                }

                function handle_block_comment(preserve_statement_flags) {
                    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.
                            output.raw = opt.test_output_raw;
                        }
                        return;
                    }

                    if (current_token.directives) {
                        print_newline(false, preserve_statement_flags);
                        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_linebreaks(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, preserve_statement_flags);
                    if (lines.length > 1) {
                        javadoc = all_lines_start_with(lines.slice(1), '*');
                        starless = each_line_matches_indent(lines.slice(1), lastIndent);
                    }

                    // 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, preserve_statement_flags);
                }

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

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

                function handle_dot() {
                    if (start_of_statement()) {
                        // The conditional starts the statement if appropriate.
                    }
                    else {
                        handle_whitespace_and_comments(current_token, true);
                    }

                    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(preserve_statement_flags) {
                    print_token();

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

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


            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() === ' ') {
                        _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 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 InputScanner = function(input) {
                var _input = input;
                var _input_length = _input.length;
                var _position = 0;

                this.back = function() {
                    _position -= 1;
                };

                this.hasNext = function() {
                    return _position < _input_length;
                };

                this.next = function() {
                    var val = null;
                    if (this.hasNext()) {
                        val = _input.charAt(_position);
                        _position += 1;
                    }
                    return val;
                };

                this.peek = function(index) {
                    var val = null;
                    index = index || 0;
                    index += _position;
                    if (index >= 0 && index < _input_length) {
                        val = _input.charAt(index);
                    }
                    return val;
                };

                this.peekCharCode = function(index) {
                    var val = 0;
                    index = index || 0;
                    index += _position;
                    if (index >= 0 && index < _input_length) {
                        val = _input.charCodeAt(index);
                    }
                    return val;
                };

                this.test = function(pattern, index) {
                    index = index || 0;
                    pattern.lastIndex = _position + index;
                    return pattern.test(_input);
                };

                this.testChar = function(pattern, index) {
                    var val = this.peek(index);
                    return val !== null && pattern.test(val);
                };

                this.match = function(pattern) {
                    pattern.lastIndex = _position;
                    var pattern_match = pattern.exec(_input);
                    if (pattern_match && pattern_match.index === _position) {
                        _position += pattern_match[0].length;
                    }
                    else {
                        pattern_match = null;
                    }
                    return pattern_match;
                };
            };

            var Token = function(type, text, newlines, whitespace_before, parent) {
                this.type = type;
                this.text = text;

                // comments_before are
                // comments that have a new line before them
                // and may or may not have a newline after
                // this is a set of comments before
                this.comments_before = /* inline comment*/ [];


                this.comments_after = []; // no new line before and newline after
                this.newlines = newlines || 0;
                this.wanted_newline = newlines > 0;
                this.whitespace_before = whitespace_before || '';
                this.parent = parent || null;
                this.opened = null;
                this.directives = null;
            };

            function tokenizer(input_string, opts) {

                var whitespace = "\n\r\t ".split('');
                var digit = /[0-9]/;
                var digit_bin = /[01]/;
                var digit_oct = /[01234567]/;
                var digit_hex = /[0123456789abcdefABCDEF]/;

                this.positionable_operators = '!= !== % & && * ** + - / : < << <= == === > >= >> >>> ? ^ | ||'.split(' ');
                var punct = this.positionable_operators.concat(
                    // non-positionable operators - these do not follow operator position settings
                    '! %= &= *= **= ++ += , -- -= /= :: <<= = => >>= >>>= ^= |= ~ ...'.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', 'of', 'else', 'get', 'set', 'new', 'catch', 'finally', 'typeof', 'yield', 'async', 'await', 'from', 'as']);

                //  /* ... */ 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;
                var input;

                this.tokenize = function() {
                    input = new InputScanner(input_string);
                    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;
                            next.opened = open;

                            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 resulting_string;
                    var whitespace_on_this_line = [];

                    n_newlines = 0;
                    whitespace_before_token = '';

                    var c = input.next();

                    if (c === null) {
                        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', '{');
                    }

                    while (in_array(c, whitespace)) {

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

                        c = input.next();

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

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

                    if (digit.test(c) || (c === '.' && input.testChar(digit))) {
                        var allow_decimal = true;
                        var allow_e = true;
                        var local_digit = digit;

                        if (c === '0' && input.testChar(/[XxOoBb]/)) {
                            // switch to hex/oct/bin number, no decimal or e, just hex/oct/bin digits
                            allow_decimal = false;
                            allow_e = false;
                            if (input.testChar(/[Bb]/)) {
                                local_digit = digit_bin;
                            }
                            else if (input.testChar(/[Oo]/)) {
                                local_digit = digit_oct;
                            }
                            else {
                                local_digit = digit_hex;
                            }
                            c += input.next();
                        }
                        else if (c === '.') {
                            // Already have a decimal for this literal, don't allow another
                            allow_decimal = false;
                        }
                        else {
                            // we know this first loop will run.  It keeps the logic simpler.
                            c = '';
                            input.back();
                        }

                        // Add the digits
                        while (input.testChar(local_digit)) {
                            c += input.next();

                            if (allow_decimal && input.peek() === '.') {
                                c += input.next();
                                allow_decimal = false;
                            }

                            // a = 1.e-7 is valid, so we test for . then e in one loop
                            if (allow_e && input.testChar(/[Ee]/)) {
                                c += input.next();

                                if (input.testChar(/[+-]/)) {
                                    c += input.next();
                                }

                                allow_e = false;
                                allow_decimal = false;
                            }
                        }

                        return [c, 'TK_WORD'];
                    }

                    if (acorn.isIdentifierStart(input.peekCharCode(-1))) {
                        if (input.hasNext()) {
                            while (acorn.isIdentifierChar(input.peekCharCode())) {
                                c += input.next();
                                if (!input.hasNext()) {
                                    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' || c === 'of') { // hack for 'in' and 'of' operators
                                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 = '';
                        var comment_match;
                        // peek for comment /* ... */
                        if (input.peek() === '*') {
                            input.next();
                            comment_match = input.match(block_comment_pattern);
                            comment = '/*' + comment_match[0];
                            var directives = get_directives(comment);
                            if (directives && directives.ignore === 'start') {
                                comment_match = input.match(directives_end_ignore_pattern);
                                comment += comment_match[0];
                            }
                            comment = comment.replace(acorn.allLineBreaks, '\n');
                            return [comment, 'TK_BLOCK_COMMENT', directives];
                        }
                        // peek for comment // ...
                        if (input.peek() === '/') {
                            input.next();
                            comment_match = input.match(comment_pattern);
                            comment = '//' + comment_match[0];
                            return [comment, 'TK_COMMENT'];
                        }

                    }

                    var startXmlRegExp = /<()([-a-zA-Z:0-9_.]+|{[\s\S]+?}|!\[CDATA\[[\s\S]*?\]\])(\s+{[\s\S]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{[\s\S]+?}))*\s*(\/?)\s*>/g;

                    if (c === '`' || c === "'" || c === '"' || // string
                        (
                            (c === '/') || // regexp
                            (opts.e4x && c === "<" && input.test(startXmlRegExp, -1)) // 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 (input.hasNext() &&
                                ((esc || in_char_class || input.peek() !== sep) &&
                                    !input.testChar(acorn.newline))) {
                                resulting_string += input.peek();
                                if (!esc) {
                                    esc = input.peek() === '\\';
                                    if (input.peek() === '[') {
                                        in_char_class = true;
                                    }
                                    else if (input.peek() === ']') {
                                        in_char_class = false;
                                    }
                                }
                                else {
                                    esc = false;
                                }
                                input.next();
                            }
                        }
                        else if (opts.e4x && sep === '<') {
                            //
                            // handle e4x xml literals
                            //

                            var xmlRegExp = /[\s\S]*?<(\/?)([-a-zA-Z:0-9_.]+|{[\s\S]+?}|!\[CDATA\[[\s\S]*?\]\])(\s+{[\s\S]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{[\s\S]+?}))*\s*(\/?)\s*>/g;
                            input.back();
                            var xmlStr = '';
                            var match = input.match(startXmlRegExp);
                            if (match) {
                                // Trim root tag to attempt to
                                var rootTag = match[2].replace(/^{\s+/, '{').replace(/\s+}$/, '}');
                                var isCurlyRoot = rootTag.indexOf('{') === 0;
                                var depth = 0;
                                while (match) {
                                    var isEndTag = !!match[1];
                                    var tagName = match[2];
                                    var isSingletonTag = (!!match[match.length - 1]) || (tagName.slice(0, 8) === "![CDATA[");
                                    if (!isSingletonTag &&
                                        (tagName === rootTag || (isCurlyRoot && tagName.replace(/^{\s+/, '{').replace(/\s+}$/, '}')))) {
                                        if (isEndTag) {
                                            --depth;
                                        }
                                        else {
                                            ++depth;
                                        }
                                    }
                                    xmlStr += match[0];
                                    if (depth <= 0) {
                                        break;
                                    }
                                    match = input.match(xmlRegExp);
                                }
                                // if we didn't close correctly, keep unformatted.
                                if (!match) {
                                    xmlStr += input.match(/[\s\S]*/g)[0];
                                }
                                xmlStr = xmlStr.replace(acorn.allLineBreaks, '\n');
                                return [xmlStr, "TK_STRING"];
                            }
                        }
                        else {
                            //
                            // handle string
                            //
                            var parse_string = function(delimiter, allow_unescaped_newlines, start_sub) {
                                // Template strings can travers lines without escape characters.
                                // Other strings cannot
                                var current_char;
                                while (input.hasNext()) {
                                    current_char = input.peek();
                                    if (!(esc || (current_char !== delimiter &&
                                            (allow_unescaped_newlines || !acorn.newline.test(current_char))))) {
                                        break;
                                    }

                                    // Handle \r\n linebreaks after escapes or in template strings
                                    if ((esc || allow_unescaped_newlines) && acorn.newline.test(current_char)) {
                                        if (current_char === '\r' && input.peek(1) === '\n') {
                                            input.next();
                                            current_char = input.peek();
                                        }
                                        resulting_string += '\n';
                                    }
                                    else {
                                        resulting_string += current_char;
                                    }

                                    if (esc) {
                                        if (current_char === 'x' || current_char === 'u') {
                                            has_char_escapes = true;
                                        }
                                        esc = false;
                                    }
                                    else {
                                        esc = current_char === '\\';
                                    }

                                    input.next();

                                    if (start_sub && resulting_string.indexOf(start_sub, resulting_string.length - start_sub.length) !== -1) {
                                        if (delimiter === '`') {
                                            parse_string('}', allow_unescaped_newlines, '`');
                                        }
                                        else {
                                            parse_string('`', allow_unescaped_newlines, '${');
                                        }

                                        if (input.hasNext()) {
                                            resulting_string += input.next();
                                        }
                                    }
                                }
                            };

                            if (sep === '`') {
                                parse_string('`', true, '${');
                            }
                            else {
                                parse_string(sep);
                            }
                        }

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

                        if (input.peek() === sep) {
                            resulting_string += sep;
                            input.next();

                            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 (input.hasNext() && acorn.isIdentifierStart(input.peekCharCode())) {
                                    resulting_string += input.next();
                                }
                            }
                        }
                        return [resulting_string, 'TK_STRING'];
                    }

                    if (c === '#') {

                        if (tokens.length === 0 && input.peek() === '!') {
                            // shebang
                            resulting_string = c;
                            while (input.hasNext() && c !== '\n') {
                                c = input.next();
                                resulting_string += c;
                            }
                            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 (input.hasNext() && input.testChar(digit)) {
                            do {
                                c = input.next();
                                sharp += c;
                            } while (input.hasNext() && c !== '#' && c !== '=');
                            if (c === '#') {
                                //
                            }
                            else if (input.peek() === '[' && input.peek(1) === ']') {
                                sharp += '[]';
                                input.next();
                                input.next();
                            }
                            else if (input.peek() === '{' && input.peek(1) === '}') {
                                sharp += '{}';
                                input.next();
                                input.next();
                            }
                            return [sharp, 'TK_WORD'];
                        }
                    }

                    if (c === '<' && (input.peek() === '?' || input.peek() === '%')) {
                        input.back();
                        var template_match = input.match(template_pattern);
                        if (template_match) {
                            c = template_match[0];
                            c = c.replace(acorn.allLineBreaks, '\n');
                            return [c, 'TK_STRING'];
                        }
                    }

                    if (c === '<' && input.match(/\!--/g)) {
                        c = '<!--';
                        while (input.hasNext() && !input.testChar(acorn.newline)) {
                            c += input.next();
                        }
                        in_html_comment = true;
                        return [c, 'TK_COMMENT'];
                    }

                    if (c === '-' && in_html_comment && input.match(/->/g)) {
                        in_html_comment = false;
                        return ['-->', 'TK_COMMENT'];
                    }

                    if (c === '.') {
                        if (input.peek() === '.' && input.peek(1) === '.') {
                            c += input.next() + input.next();
                            return [c, 'TK_OPERATOR'];
                        }
                        return [c, 'TK_DOT'];
                    }

                    if (in_array(c, punct)) {
                        while (input.hasNext() && in_array(c + input.peek(), punct)) {
                            c += input.next();
                            if (!input.hasNext()) {
                                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) {
                    // You think that a regex would work for this
                    // return s.replace(/\\x([0-9a-f]{2})/gi, function(match, val) {
                    //         return String.fromCharCode(parseInt(val, 16));
                    //     })
                    // However, dealing with '\xff', '\\xff', '\\\xff' makes this more fun.
                    var out = '',
                        escaped = 0;

                    var input_scan = new InputScanner(s);
                    var matched = null;

                    while (input_scan.hasNext()) {
                        // Keep any whitespace, non-slash characters
                        // also keep slash pairs.
                        matched = input_scan.match(/([\s]|[^\\]|\\\\)+/g);

                        if (matched) {
                            out += matched[0];
                        }

                        if (input_scan.peek() === '\\') {
                            input_scan.next();
                            if (input_scan.peek() === 'x') {
                                matched = input_scan.match(/x([0-9A-Fa-f]{2})/g);
                            }
                            else if (input_scan.peek() === 'u') {
                                matched = input_scan.match(/u([0-9A-Fa-f]{4})/g);
                            }
                            else {
                                out += '\\';
                                if (input_scan.hasNext()) {
                                    out += input_scan.next();
                                }
                                continue;
                            }

                            // If there's some error decoding, return the original string
                            if (!matched) {
                                return s;
                            }

                            escaped = parseInt(matched[1], 16);

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

                    return out;
                }
            }

            var beautifier = new Beautifier(js_source_text, options);
            return beautifier.beautify();

        }


        //#region custom for ace
        exports.js_beautify = js_beautify;
        return;
        //#endregion


        if (typeof define === "function" && define.amd) {
            // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
            define([], function() {
                return {
                    js_beautify: js_beautify
                };
            });
        }
        else if (typeof exports !== "undefined") {
            // Add support for CommonJS. Just put this file somewhere on your require.paths
            // and you will be able to `var js_beautify = require("beautify").js_beautify`.
            exports.js_beautify = js_beautify;
        }
        else if (typeof window !== "undefined") {
            // If we're running a web page and don't have either of the above, add our one global
            window.js_beautify = js_beautify;
        }
        else if (typeof global !== "undefined") {
            // If we don't even have window, try global.
            global.js_beautify = js_beautify;
        }

    }());
});

/**
 * @version 1.6.8
 * @Updated 2016.01.04
 * @link https://raw.githubusercontent.com/beautify-web/js-beautify/master/js/lib/beautify-css.js
 */
ace.define('css_beautify', ['require', 'exports', 'module'], function(require, exports, module) {
    /*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
    /*

      The MIT License (MIT)

      Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

      Permission is hereby granted, free of charge, to any person
      obtaining a copy of this software and associated documentation files
      (the "Software"), to deal in the Software without restriction,
      including without limitation the rights to use, copy, modify, merge,
      publish, distribute, sublicense, and/or sell copies of the Software,
      and to permit persons to whom the Software is furnished to do so,
      subject to the following conditions:

      The above copyright notice and this permission notice shall be
      included in all copies or substantial portions of the Software.

      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
      BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
      ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
      CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      SOFTWARE.


     CSS Beautifier
    ---------------

        Written by Harutyun Amirjanyan, (amirjanyan@gmail.com)

        Based on code initially developed by: Einar Lielmanis, <einar@jsbeautifier.org>
            http://jsbeautifier.org/

        Usage:
            css_beautify(source_text);
            css_beautify(source_text, options);

        The options are (default in brackets):
            indent_size (4)                         — indentation size,
            indent_char (space)                     — character to indent with,
            selector_separator_newline (true)       - separate selectors with newline or
                                                      not (e.g. "a,\nbr" or "a, br")
            end_with_newline (false)                - end with a newline
            newline_between_rules (true)            - add a new line after every css rule
            space_around_selector_separator (false) - ensure space around selector separators:
                                                      '>', '+', '~' (e.g. "a>b" -> "a > b")
        e.g

        css_beautify(css_source_text, {
          'indent_size': 1,
          'indent_char': '\t',
          'selector_separator': ' ',
          'end_with_newline': false,
          'newline_between_rules': true,
          'space_around_selector_separator': true
        });
    */

    // http://www.w3.org/TR/CSS21/syndata.html#tokenization
    // http://www.w3.org/TR/css3-syntax/

    (function() {

        function mergeOpts(allOptions, targetType) {
            var finalOpts = {};
            var name;

            for (name in allOptions) {
                if (name !== targetType) {
                    finalOpts[name] = allOptions[name];
                }
            }


            //merge in the per type settings for the targetType
            if (targetType in allOptions) {
                for (name in allOptions[targetType]) {
                    finalOpts[name] = allOptions[targetType][name];
                }
            }
            return finalOpts;
        }

        var lineBreak = /\r\n|[\n\r\u2028\u2029]/;
        var allLineBreaks = new RegExp(lineBreak.source, 'g');

        function css_beautify(source_text, options) {
            options = options || {};

            // Allow the setting of language/file-type specific options
            // with inheritance of overall settings
            options = mergeOpts(options, 'css');

            source_text = source_text || '';

            var indentSize = options.indent_size ? parseInt(options.indent_size, 10) : 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 space_around_combinator = (options.space_around_combinator === undefined) ? false : options.space_around_combinator;
            space_around_combinator = space_around_combinator || ((options.space_around_selector_separator === undefined) ? false : options.space_around_selector_separator);
            var eol = options.eol ? options.eol : 'auto';

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

            if (eol === 'auto') {
                eol = '\n';
                if (source_text && lineBreak.test(source_text || '')) {
                    eol = source_text.match(lineBreak)[0];
                }
            }

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

            // HACK: newline parsing inconsistent. This brute force normalizes the input.
            source_text = source_text.replace(allLineBreaks, '\n');

            // tokenizer
            var whiteRe = /^\s+$/;

            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();

                    // deal with less propery mixins @{...}
                    if (peek() === '{') {
                        output.push(eatString('}'));
                    }
                    else {
                        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 css_beautify.NESTED_AT_RULE) {
                            nestedLevel += 1;
                            if (variableOrRule in css_beautify.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()) &&
                        !lookBack("(")) {
                        // 'property: value' delimiter
                        // which could be in a conditional group query
                        output.push(':');
                        if (!insidePropertyValue) {
                            insidePropertyValue = true;
                            print.singleSpace();
                        }
                    }
                    else {
                        // sass/less parent reference don't use a space
                        // sass nested pseudo-class don't use a space

                        // preserve space before pseudoclasses/pseudoelements, as it means "in any child"
                        if (lookBack(" ") && output[output.length - 1] !== " ") {
                            output.push(" ");
                        }
                        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 === '>' || ch === '+' || ch === '~') &&
                    !insidePropertyValue && parenLevel < 1) {
                    //handle combinator spacing
                    if (space_around_combinator) {
                        print.singleSpace();
                        output.push(ch);
                        print.singleSpace();
                    }
                    else {
                        output.push(ch);
                        eatWhitespace();
                        // squash extra whitespace
                        if (ch && whiteRe.test(ch)) {
                            ch = '';
                        }
                    }
                }
                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;
        }

        // https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule
        css_beautify.NESTED_AT_RULE = {
            "@page": true,
            "@font-face": true,
            "@keyframes": true,
            // also in CONDITIONAL_GROUP_RULE below
            "@media": true,
            "@supports": true,
            "@document": true
        };
        css_beautify.CONDITIONAL_GROUP_RULE = {
            "@media": true,
            "@supports": true,
            "@document": true
        };


        //#region custom for ace
        exports.css_beautify = css_beautify;
        return;
        //#endregion


        /*global define */
        if (typeof define === "function" && define.amd) {
            // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
            define([], function() {
                return {
                    css_beautify: css_beautify
                };
            });
        }
        else if (typeof exports !== "undefined") {
            // Add support for CommonJS. Just put this file somewhere on your require.paths
            // and you will be able to `var html_beautify = require("beautify").html_beautify`.
            exports.css_beautify = css_beautify;
        }
        else if (typeof window !== "undefined") {
            // If we're running a web page and don't have either of the above, add our one global
            window.css_beautify = css_beautify;
        }
        else if (typeof global !== "undefined") {
            // If we don't even have window, try global.
            global.css_beautify = css_beautify;
        }

    }());
});

/**
 * @version 1.6.8
 * @Updated 2016.01.04
 * @link https://raw.githubusercontent.com/beautify-web/js-beautify/master/js/lib/beautify-html.js
 */
ace.define('html_beautify', ['require', 'exports', 'module'], function(require, exports, module) {
    /*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
    /*

      The MIT License (MIT)

      Copyright (c) 2007-2017 Einar Lielmanis, Liam Newman, and contributors.

      Permission is hereby granted, free of charge, to any person
      obtaining a copy of this software and associated documentation files
      (the "Software"), to deal in the Software without restriction,
      including without limitation the rights to use, copy, modify, merge,
      publish, distribute, sublicense, and/or sell copies of the Software,
      and to permit persons to whom the Software is furnished to do so,
      subject to the following conditions:

      The above copyright notice and this permission notice shall be
      included in all copies or substantial portions of the Software.

      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
      BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
      ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
      CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      SOFTWARE.


     Style HTML
    ---------------

      Written by Nochum Sossonko, (nsossonko@hotmail.com)

      Based on code initially developed by: Einar Lielmanis, <einar@jsbeautifier.org>
        http://jsbeautifier.org/

      Usage:
        style_html(html_source);

        style_html(html_source, options);

      The options are:
        indent_inner_html (default false)  — indent <head> and <body> sections,
        indent_size (default 4)          — indentation size,
        indent_char (default space)      — character to indent with,
        wrap_line_length (default 250)            -  maximum amount of characters per line (0 = disable)
        brace_style (default "collapse") - "collapse" | "expand" | "end-expand" | "none"
                put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.
        unformatted (defaults to inline tags) - list of tags, that shouldn't be reformatted
        content_unformatted (defaults to pre tag) - list of tags, that its content shouldn't be reformatted
        indent_scripts (default normal)  - "keep"|"separate"|"normal"
        preserve_newlines (default true) - whether existing line breaks before elements should be preserved
                                            Only works before elements, not inside tags or for text.
        max_preserve_newlines (default unlimited) - maximum number of line breaks to be preserved in one chunk
        indent_handlebars (default false) - format and indent {{#foo}} and {{/foo}}
        end_with_newline (false)          - end with a newline
        extra_liners (default [head,body,/html]) -List of tags that should have an extra newline before them.

        e.g.

        style_html(html_source, {
          'indent_inner_html': false,
          'indent_size': 2,
          'indent_char': ' ',
          'wrap_line_length': 78,
          'brace_style': 'expand',
          'preserve_newlines': true,
          'max_preserve_newlines': 5,
          'indent_handlebars': false,
          'extra_liners': ['/html']
        });
    */

    (function() {

        // 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 mergeOpts(allOptions, targetType) {
            var finalOpts = {};
            var name;

            for (name in allOptions) {
                if (name !== targetType) {
                    finalOpts[name] = allOptions[name];
                }
            }

            //merge in the per type settings for the targetType
            if (targetType in allOptions) {
                for (name in allOptions[targetType]) {
                    finalOpts[name] = allOptions[targetType][name];
                }
            }
            return finalOpts;
        }

        var lineBreak = /\r\n|[\n\r\u2028\u2029]/;
        var allLineBreaks = new RegExp(lineBreak.source, 'g');

        function style_html(html_source, options, js_beautify, css_beautify) {
            //Wrapper function to invoke all the necessary constructors and deal with the output.

            var multi_parser,
                indent_inner_html,
                indent_body_inner_html,
                indent_head_inner_html,
                indent_size,
                indent_character,
                wrap_line_length,
                brace_style,
                unformatted,
                content_unformatted,
                preserve_newlines,
                max_preserve_newlines,
                indent_handlebars,
                wrap_attributes,
                wrap_attributes_indent_size,
                is_wrap_attributes_force,
                is_wrap_attributes_force_expand_multiline,
                is_wrap_attributes_force_aligned,
                end_with_newline,
                extra_liners,
                eol;

            options = options || {};

            // Allow the setting of language/file-type specific options
            // with inheritance of overall settings
            options = mergeOpts(options, 'html');

            // 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_body_inner_html = (options.indent_body_inner_html === undefined) ? true : options.indent_body_inner_html;
            indent_head_inner_html = (options.indent_head_inner_html === undefined) ? true : options.indent_head_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 || [
                // https://www.w3.org/TR/html5/dom.html#phrasing-content
                'a', 'abbr', 'area', 'audio', 'b', 'bdi', 'bdo', 'br', 'button', 'canvas', 'cite',
                'code', 'data', 'datalist', 'del', 'dfn', 'em', 'embed', 'i', 'iframe', 'img',
                'input', 'ins', 'kbd', 'keygen', 'label', 'map', 'mark', 'math', 'meter', 'noscript',
                'object', 'output', 'progress', 'q', 'ruby', 's', 'samp', /* 'script', */ 'select', 'small',
                'span', 'strong', 'sub', 'sup', 'svg', 'template', 'textarea', 'time', 'u', 'var',
                'video', 'wbr', 'text',
                // prexisting - not sure of full effect of removing, leaving in
                'acronym', 'address', 'big', 'dt', 'ins', 'strike', 'tt',
            ];
            content_unformatted = options.content_unformatted || [
                '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 = (isNaN(parseInt(options.wrap_attributes_indent_size, 10))) ? indent_size : parseInt(options.wrap_attributes_indent_size, 10);
            is_wrap_attributes_force = wrap_attributes.substr(0, 'force'.length) === 'force';
            is_wrap_attributes_force_expand_multiline = (wrap_attributes === 'force-expand-multiline');
            is_wrap_attributes_force_aligned = (wrap_attributes === 'force-aligned');
            end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
            extra_liners = (typeof options.extra_liners === 'object') && options.extra_liners ?
                options.extra_liners.concat() : (typeof options.extra_liners === 'string') ?
                options.extra_liners.split(',') : 'head,body,/html'.split(',');
            eol = options.eol ? options.eol : 'auto';

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

            if (eol === 'auto') {
                eol = '\n';
                if (html_source && lineBreak.test(html_source || '')) {
                    eol = html_source.match(lineBreak)[0];
                }
            }

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

            // HACK: newline parsing inconsistent. This brute force normalizes the input.
            html_source = html_source.replace(allLineBreaks, '\n');

            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.indent_body_inner_html = indent_body_inner_html;
                this.indent_head_inner_html = indent_head_inner_html;

                this.Utils = { //Uilities made available to the various functions
                    whitespace: "\n\r\t ".split(''),

                    single_token: [
                        // HTLM void elements - aka self-closing tags - aka singletons
                        // https://www.w3.org/html/wg/drafts/html/master/syntax.html#void-elements
                        'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'keygen',
                        'link', 'menuitem', 'meta', 'param', 'source', 'track', 'wbr',
                        // NOTE: Optional tags - are not understood.
                        // https://www.w3.org/TR/html5/syntax.html#optional-tags
                        // The rules for optional tags are too complex for a simple list
                        // Also, the content of these tags should still be indented in many cases.
                        // 'li' is a good exmple.

                        // Doctype and xml elements
                        '!doctype', '?xml',
                        // ?php tag
                        '?php',
                        // other tags that were in this list, keeping just in case
                        'basefont', 'isindex'
                    ],
                    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; n++) {
                        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.
                // return true if a newline was added, false if a space was added
                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);
                        return true;
                    }
                    else {
                        this.line_char_count++;
                        content.push(' ');
                        return false;
                    }
                };

                this.get_content = function() { //function to capture regular content between tags
                    var input_char = '',
                        content = [],
                        handlebarsStarted = 0;

                    while (this.input.charAt(this.pos) !== '<' || handlebarsStarted === 2) {
                        if (this.pos >= this.input.length) {
                            return content.length ? content.join('') : ['', 'TK_EOF'];
                        }

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

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

                        if (indent_handlebars) {
                            if (input_char === '{') {
                                handlebarsStarted += 1;
                            }
                            else if (handlebarsStarted < 2) {
                                handlebarsStarted = 0;
                            }

                            if (input_char === '}' && handlebarsStarted > 0) {
                                if (handlebarsStarted-- === 0) {
                                    break;
                                }
                            }
                            // 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;
                                }
                            }
                        }

                        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,
                        has_wrapped_attrs = false,
                        tag_start, tag_end,
                        tag_start_char,
                        orig_pos = this.pos,
                        orig_line_char_count = this.line_char_count,
                        is_tag_closed = false,
                        tail;

                    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;
                        }
                        tail = this.input.substr(this.pos - 1);
                        if (is_wrap_attributes_force_expand_multiline && has_wrapped_attrs && !is_tag_closed && (input_char === '>' || input_char === '/')) {
                            if (tail.match(/^\/?\s*>/)) {
                                space = false;
                                is_tag_closed = true;
                                this.print_newline(false, content);
                                this.print_indentation(content);
                            }
                        }
                        if (content.length && content[content.length - 1] !== '=' && input_char !== '>' && space) {
                            //no space after = or before >
                            var wrapped = this.space_or_wrap(content);
                            var indentAttrs = wrapped && input_char !== '/' && !is_wrap_attributes_force;
                            space = false;

                            if (is_wrap_attributes_force && input_char !== '/') {
                                var force_first_attr_wrap = false;
                                if (is_wrap_attributes_force_expand_multiline && first_attr) {
                                    var is_only_attribute = tail.match(/^\S*(="([^"]|\\")*")?\s*\/?\s*>/) !== null;
                                    force_first_attr_wrap = !is_only_attribute;
                                }
                                if (!first_attr || force_first_attr_wrap) {
                                    this.print_newline(false, content);
                                    this.print_indentation(content);
                                    indentAttrs = true;
                                }
                            }
                            if (indentAttrs) {
                                has_wrapped_attrs = true;

                                //indent attributes an auto, forced, or forced-align line-wrap
                                var alignment_size = wrap_attributes_indent_size;
                                if (is_wrap_attributes_force_aligned) {
                                    alignment_size = content.indexOf(' ') + 1;
                                }

                                for (var count = 0; count < alignment_size; count++) {
                                    content.push(indent_character);
                                }
                            }
                            if (first_attr) {
                                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('\n') !== -1) { //if there's a line break, thats where the tag name ends
                        tag_index = tag_complete.indexOf('\n');
                    }
                    else if (tag_complete.indexOf(' ') !== -1) { //if there's whitespace, thats where the tag name ends
                        tag_index = tag_complete.indexOf(' ');
                    }
                    else if (tag_complete.charAt(0) === '{') {
                        tag_index = tag_complete.indexOf('}');
                    }
                    else { //otherwise go with the tag ending
                        tag_index = tag_complete.indexOf('>');
                    }
                    if (tag_complete.charAt(0) === '<' || !indent_handlebars) {
                        tag_offset = 1;
                    }
                    else {
                        tag_offset = tag_complete.charAt(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.charAt(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) ||
                        this.is_unformatted(tag_check, content_unformatted)) {
                        // do not reformat the "unformatted" or "content_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|dojo)\/(x-)?(javascript|ecmascript|jscript|livescript|(ld\+)?json|method|aspect)/) > -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.charAt(comment.length - 1) === delimiter.charAt(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
                                if (comment.length === 5 && comment.indexOf('{{!--') === -1) {
                                    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;
                };

                function tokenMatcher(delimiter) {
                    var token = '';

                    var add = function(str) {
                        var newToken = token + str.toLowerCase();
                        token = newToken.length <= delimiter.length ? newToken : newToken.substr(newToken.length - delimiter.length, delimiter.length);
                    };

                    var doesNotMatch = function() {
                        return token.indexOf(delimiter) === -1;
                    };

                    return {
                        add: add,
                        doesNotMatch: doesNotMatch
                    };
                }

                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 space = true;

                    var delimiterMatcher = tokenMatcher(delimiter);

                    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;
                        delimiterMatcher.add(input_char);
                        this.line_char_count++;
                        space = true;

                        if (indent_handlebars && input_char === '{' && content.length && content.charAt(content.length - 2) === '{') {
                            // Handlebars expressions in strings should also be unformatted.
                            content += this.get_unformatted('}}');
                            // Don't consider when stopping for delimiters.
                        }
                    } while (delimiterMatcher.doesNotMatch());

                    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 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

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

                    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.charAt(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) {
                            if ((multi_parser.indent_body_inner_html || !multi_parser.token_text.match(/<body(?:.*)>/)) &&
                                (multi_parser.indent_head_inner_html || !multi_parser.token_text.match(/<head(?:.*)>/))) {

                                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':
                        // Don't add a newline if opening {{#if}} tag is on the current line
                        var foundIfOnCurrentLine = false;
                        for (var lastCheckedOutput = multi_parser.output.length - 1; lastCheckedOutput >= 0; lastCheckedOutput--) {
                            if (multi_parser.output[lastCheckedOutput] === '\n') {
                                break;
                            }
                            else {
                                if (multi_parser.output[lastCheckedOutput].match(/{{#if/)) {
                                    foundIfOnCurrentLine = true;
                                    break;
                                }
                            }
                        }
                        if (!foundIfOnCurrentLine) {
                            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_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,
                                _beautifier,
                                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
                                var Child_options = function() {
                                    this.eol = '\n';
                                };
                                Child_options.prototype = options;
                                var child_options = new Child_options();
                                text = _beautifier(text.replace(/^\s*/, indentation), child_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 ]+$/, '');

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

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

            return sweet_code;
        }


        //#region custom for ace
        var js_beautify = require('js_beautify');
        var css_beautify = require('css_beautify');
        exports.html_beautify = function(html_source, options) {
            return style_html(html_source, options, js_beautify.js_beautify, css_beautify.css_beautify);
        };
        return;
        //#endregion


        if (typeof define === "function" && define.amd) {
            // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
            define(["require", "./beautify", "./beautify-css"], function(requireamd) {
                var js_beautify = requireamd("./beautify");
                var css_beautify = requireamd("./beautify-css");

                return {
                    html_beautify: function(html_source, options) {
                        return style_html(html_source, options, js_beautify.js_beautify, css_beautify.css_beautify);
                    }
                };
            });
        }
        else if (typeof exports !== "undefined") {
            // Add support for CommonJS. Just put this file somewhere on your require.paths
            // and you will be able to `var html_beautify = require("beautify").html_beautify`.
            var js_beautify = require('./beautify.js');
            var css_beautify = require('./beautify-css.js');

            exports.html_beautify = function(html_source, options) {
                return style_html(html_source, options, js_beautify.js_beautify, css_beautify.css_beautify);
            };
        }
        else if (typeof window !== "undefined") {
            // If we're running a web page and don't have either of the above, add our one global
            window.html_beautify = function(html_source, options) {
                return style_html(html_source, options, window.js_beautify, window.css_beautify);
            };
        }
        else if (typeof global !== "undefined") {
            // If we don't even have window, try global.
            global.html_beautify = function(html_source, options) {
                return style_html(html_source, options, global.js_beautify, global.css_beautify);
            };
        }

    }());
});