AtomicGameEngine/Resources/EditorData/AtomicEditor/JavaScript/Lib/beautify.js

/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2013 Einar Lielmanis 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, <[email protected]>
      http://jsbeautifier.org/

  Originally converted to javascript by Vital, <[email protected]>
  "End braces on own line" added by Chris J. Shull, <[email protected]>
  Parsing improvements for brace-less statements by Liam Newman <[email protected]>


  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"
            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.

    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'
    });

*/

(function() {

    var acorn = {};
    (function (exports) {
      // 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]/;
      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.

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

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

      var lineBreak = /\r\n|[\n\r\u2028\u2029]/g;

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

      var isIdentifierStart = exports.isIdentifierStart = function(code) {
        if (code < 65) return code === 36;
        if (code < 91) return true;
        if (code < 97) return code === 95;
        if (code < 123)return true;
        return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
      };

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

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

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

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

    function Beautifier(js_source_text, options) {
        "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_INLINE_COMMENT': handle_inline_comment,
            'TK_COMMENT': handle_comment,
            'TK_DOT': handle_dot,
            'TK_UNKNOWN': handle_unknown,
            'TK_EOF': handle_eof
        };

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

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

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

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

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


        opt.indent_size = options.indent_size ? parseInt(options.indent_size, 10) : 4;
        opt.indent_char = options.indent_char ? options.indent_char : ' ';
        opt.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;


        // 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;
        }

        //----------------------------------
        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);


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

        this.beautify = function() {

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

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

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

                token_pos += 1;
            }

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

            return sweet_code;
        };

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

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

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

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

        // we could use just string.split, but
        // IE doesn't like returning empty strings

        function split_newlines(s) {
            //return s.split(/\x0d\x0a|\x0a/);

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

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

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

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

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

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

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

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

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

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

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

            flags = create_flags(previous_flags, mode);
        }

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

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

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

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

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

                set_mode(MODE.Statement);
                indent();

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

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

                return true;
            }
            return false;
        }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

            }
        }

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

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

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

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

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

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

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

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

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

                print_newline();
            }

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

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

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

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

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

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

            prefix = 'NONE';

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

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

            }

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

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

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

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

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

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

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

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

                print_token();

                if (flags.declaration_assignment) {
                    flags.declaration_assignment = false;
                    print_newline(false, true);
                } else {
                    output.space_before_token = true;
                }
                return;
            }

            print_token();
            if (flags.mode === MODE.ObjectLiteral ||
                (flags.mode === MODE.Statement && flags.parent.mode === MODE.ObjectLiteral)) {
                if (flags.mode === MODE.Statement) {
                    restore_mode();
                }
                print_newline();
            } else {
                // EXPR or DO_BLOCK
                output.space_before_token = true;
            }

        }

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

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

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

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

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

            // 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);
            }

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

            var space_before = true;
            var space_after = true;

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

                space_before = false;
                space_after = false;

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

                if (last_type === 'TK_RESERVED' || last_type === 'TK_END_EXPR') {
                    space_before = true;
                } else if (last_type === 'TK_OPERATOR') {
                    space_before =
                        (in_array(current_token.text, ['--', '-']) && in_array(flags.last_text, ['--', '-'])) ||
                        (in_array(current_token.text, ['++', '+']) && in_array(flags.last_text, ['++', '+']));
                }

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

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

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

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

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

        function handle_inline_comment() {
            output.space_before_token = true;
            print_token();
            output.space_before_token = true;
        }

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

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

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

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

            print_token();
        }

        function handle_unknown() {
            print_token();

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

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


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

        var _items = [];
        var _empty = true;

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

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

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

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

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

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

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

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

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

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

        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()) {
                this.current_line = new OutputLine(this);
                lines.push(this.current_line);
                return true;
            }

            return false;
        }

        // initialize
        this.add_new_line(true);

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

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

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

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

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

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

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

            this.current_line.trim(indent_string, baseIndentString);

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

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

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

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


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

    function tokenizer(input, opts, indent_string) {

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

        var punct = ('+ - * / % & ++ -- = += -= *= /= %= == === != !== > < >= <= >> << >>> >>>= >>= <<= && &= | || ! ~ , : ? ^ ^= |= :: =>'
                +' <%= <% %> <?= <? ?>').split(' '); // try to be a good boy and try not to break the markup language identifiers

        // 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,yield,import,export'.split(',');
        var reserved_words = this.line_starters.concat(['do', 'in', 'else', 'get', 'set', 'new', 'catch', 'finally', 'typeof']);

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

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

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

            while (!(last && last.type === 'TK_EOF')) {
                token_values = tokenize_next();
                next = new Token(token_values[1], token_values[0], n_newlines, whitespace_before_token);
                while(next.type === 'TK_INLINE_COMMENT' || next.type === 'TK_COMMENT' ||
                    next.type === 'TK_BLOCK_COMMENT' || next.type === 'TK_UNKNOWN') {
                    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 = next;
                    open_stack.push(next);
                }  else if ((next.type === 'TK_END_BLOCK' || next.type === 'TK_END_EXPR') &&
                    (open && (
                        (next.text === ']' && open.text === '[') ||
                        (next.text === ')' && open.text === '(') ||
                        (next.text === '}' && open.text === '}')))) {
                    next.parent = open.parent;
                    open = open_stack.pop();
                }

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

            return tokens;
        }

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

            n_newlines = 0;
            whitespace_before_token = '';

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

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


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

            while (in_array(c, whitespace)) {

                if (c === '\n') {
                    n_newlines += 1;
                    whitespace_on_this_line = [];
                } else if (n_newlines) {
                    if (c === indent_string) {
                        whitespace_on_this_line.push(indent_string);
                    } else if (c !== '\r') {
                        whitespace_on_this_line.push(' ');
                    }
                }

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

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

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

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

                if (c === '0' && parser_pos < input_length && /[Xx]/.test(input.charAt(parser_pos))) {
                    // switch to hex number, no decimal or e, just hex digits
                    allow_decimal = false;
                    allow_e = false;
                    c += input.charAt(parser_pos);
                    parser_pos += 1;
                    local_digit = /[0123456789abcdefABCDEF]/
                } else {
                    // we know this first loop will run.  It keeps the logic simpler.
                    c = '';
                    parser_pos -= 1
                }

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

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

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

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

                        allow_e = false;
                        allow_decimal = false;
                    }
                }

                return [c, 'TK_WORD'];
            }

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

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

                return [c, 'TK_WORD'];
            }

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

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

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

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

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

            if (c === '/') {
                var comment = '';
                // peek for comment /* ... */
                var inline_comment = true;
                if (input.charAt(parser_pos) === '*') {
                    parser_pos += 1;
                    if (parser_pos < input_length) {
                        while (parser_pos < input_length && !(input.charAt(parser_pos) === '*' && input.charAt(parser_pos + 1) && input.charAt(parser_pos + 1) === '/')) {
                            c = input.charAt(parser_pos);
                            comment += c;
                            if (c === "\n" || c === "\r") {
                                inline_comment = false;
                            }
                            parser_pos += 1;
                            if (parser_pos >= input_length) {
                                break;
                            }
                        }
                    }
                    parser_pos += 2;
                    if (inline_comment && n_newlines === 0) {
                        return ['/*' + comment + '*/', 'TK_INLINE_COMMENT'];
                    } else {
                        return ['/*' + comment + '*/', 'TK_BLOCK_COMMENT'];
                    }
                }
                // peek for comment // ...
                if (input.charAt(parser_pos) === '/') {
                    comment = c;
                    while (input.charAt(parser_pos) !== '\r' && input.charAt(parser_pos) !== '\n') {
                        comment += input.charAt(parser_pos);
                        parser_pos += 1;
                        if (parser_pos >= input_length) {
                            break;
                        }
                    }
                    return [comment, 'TK_COMMENT'];
                }

            }

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

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

                resulting_string = c;

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

                }

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

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

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

            if (c === '#') {

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



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

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

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

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

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

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

            return [c, 'TK_UNKNOWN'];
        }


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

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

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

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

                    escaped = parseInt(s_hex, 16);

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

    }


    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;
    }

}());