Add m-esr52 at 52.6.0

1 files changed, 1662 insertions, 0 deletions

diff --git a/devtools/shared/jsbeautify/src/beautify-js.js b/devtools/shared/jsbeautify/src/beautify-js.js
new file mode 100644
index 000000000..053d973e0
--- /dev/null
+++ b/devtools/shared/jsbeautify/src/beautify-js.js
@@ -0,0 +1,1662 @@
+/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
+
+"use strict";
+
+const acorn = require("acorn/acorn");
+
+/*
+
+  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, <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()
+
+    brace_style (default "collapse") - "collapse" | "expand" | "end-expand"
+            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.
+
+    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.
+
+    e.g
+
+    js_beautify(js_source_text, {
+      'indent_size': 1,
+      'indent_char': '\t'
+    });
+
+*/
+
+var js_beautify = function js_beautify(js_source_text, options) {
+    var beautifier = new Beautifier(js_source_text, options);
+    return beautifier.beautify();
+};
+
+exports.jsBeautify = js_beautify;
+
+function Beautifier(js_source_text, options) {
+    var input, output_lines;
+    var token_text, token_type, last_type, last_last_text, indent_string;
+    var flags, previous_flags, flag_store;
+    var whitespace, wordchar, punct, parser_pos, line_starters, reserved_words, digits;
+    var prefix;
+    var input_wanted_newline;
+    var output_space_before_token;
+    var input_length, n_newlines, whitespace_before_token;
+    var handlers, MODE, opt;
+    var preindent_string = '';
+
+
+
+    whitespace = "\n\r\t ".split('');
+    wordchar = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$'.split('');
+    digits = '0123456789'.split('');
+
+    punct = '+ - * / % & ++ -- = += -= *= /= %= == === != !== > < >= <= >> << >>> >>>= >>= <<= && &= | || ! ~ , : ? ^ ^= |= :: =>';
+    punct += ' <%= <% %> <?= <? ?>'; // try to be a good boy and try not to break the markup language identifiers
+    punct = punct.split(' ');
+
+    // words which should always start on new line.
+    line_starters = 'continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,yield'.split(',');
+    reserved_words = line_starters.concat(['do', 'in', 'else', 'get', 'set', 'new', 'catch', 'finally', 'typeof']);
+
+
+    MODE = {
+        BlockStatement: 'BlockStatement', // 'BLOCK'
+        Statement: 'Statement', // 'STATEMENT'
+        ObjectLiteral: 'ObjectLiteral', // 'OBJECT',
+        ArrayLiteral: 'ArrayLiteral', //'[EXPRESSION]',
+        ForInitializer: 'ForInitializer', //'(FOR-EXPRESSION)',
+        Conditional: 'Conditional', //'(COND-EXPRESSION)',
+        Expression: 'Expression' //'(EXPRESSION)'
+    };
+
+    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
+    };
+
+    function create_flags(flags_base, mode) {
+        var next_indent_level = 0;
+        if (flags_base) {
+            next_indent_level = flags_base.indentation_level;
+            if (!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,
+            in_html_comment: 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_lines.length,
+            had_comment: false,
+            ternary_depth: 0
+        };
+        return next_flags;
+    }
+
+    // Using object instead of string to allow for later expansion of info about each line
+
+    function create_output_line() {
+        return {
+            text: []
+        };
+    }
+
+    // Some interpreters have unexpected results with foo = baz || bar;
+    options = options ? options : {};
+    opt = {};
+
+    // compatibility
+    if (options.space_after_anon_function !== undefined && options.jslint_happy === undefined) {
+        options.jslint_happy = options.space_after_anon_function;
+    }
+    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.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;
+
+    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;
+    }
+
+    while (js_source_text && (js_source_text.charAt(0) === ' ' || js_source_text.charAt(0) === '\t')) {
+        preindent_string += js_source_text.charAt(0);
+        js_source_text = js_source_text.substring(1);
+    }
+    input = js_source_text;
+    // cache the source's length.
+    input_length = js_source_text.length;
+
+    last_type = 'TK_START_BLOCK'; // last token type
+    last_last_text = ''; // pre-last token text
+    output_lines = [create_output_line()];
+    output_space_before_token = false;
+    whitespace_before_token = [];
+
+    // 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);
+
+    parser_pos = 0;
+
+    this.beautify = function() {
+        /*jshint onevar:true */
+        var t, i, keep_whitespace, sweet_code;
+
+        while (true) {
+            t = get_next_token();
+            token_text = t[0];
+            token_type = t[1];
+
+            if (token_type === 'TK_EOF') {
+                // Unwind any open statements
+                while (flags.mode === MODE.Statement) {
+                    restore_mode();
+                }
+                break;
+            }
+
+            keep_whitespace = opt.keep_array_indentation && is_array(flags.mode);
+            input_wanted_newline = n_newlines > 0;
+
+            if (keep_whitespace) {
+                for (i = 0; i < n_newlines; i += 1) {
+                    print_newline(i > 0);
+                }
+            } else {
+                if (opt.max_preserve_newlines && n_newlines > opt.max_preserve_newlines) {
+                    n_newlines = opt.max_preserve_newlines;
+                }
+
+                if (opt.preserve_newlines) {
+                    if (n_newlines > 1) {
+                        print_newline();
+                        for (i = 1; i < n_newlines; i += 1) {
+                            print_newline(true);
+                        }
+                    }
+                }
+            }
+
+            handlers[token_type]();
+
+            // 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.
+            if (token_type !== 'TK_INLINE_COMMENT' && token_type !== 'TK_COMMENT' &&
+                token_type !== 'TK_BLOCK_COMMENT' && token_type !== 'TK_UNKNOWN') {
+                last_last_text = flags.last_text;
+                last_type = token_type;
+                flags.last_text = token_text;
+            }
+            flags.had_comment = (token_type === 'TK_INLINE_COMMENT' || token_type === 'TK_COMMENT'
+                || token_type === 'TK_BLOCK_COMMENT');
+        }
+
+
+        sweet_code = output_lines[0].text.join('');
+        for (var line_index = 1; line_index < output_lines.length; line_index++) {
+            sweet_code += '\n' + output_lines[line_index].text.join('');
+        }
+        sweet_code = sweet_code.replace(/[\r\n ]+$/, '');
+        return sweet_code;
+    };
+
+    function trim_output(eat_newlines) {
+        eat_newlines = (eat_newlines === undefined) ? false : eat_newlines;
+
+        if (output_lines.length) {
+            trim_output_line(output_lines[output_lines.length - 1], eat_newlines);
+
+            while (eat_newlines && output_lines.length > 1 &&
+                output_lines[output_lines.length - 1].text.length === 0) {
+                output_lines.pop();
+                trim_output_line(output_lines[output_lines.length - 1], eat_newlines);
+            }
+        }
+    }
+
+    function trim_output_line(line) {
+        while (line.text.length &&
+            (line.text[line.text.length - 1] === ' ' ||
+                line.text[line.text.length - 1] === indent_string ||
+                line.text[line.text.length - 1] === preindent_string)) {
+            line.text.pop();
+        }
+    }
+
+    function trim(s) {
+        return s.replace(/^\s+|\s+$/g, '');
+    }
+
+    // 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 just_added_newline() {
+        var line = output_lines[output_lines.length - 1];
+        return line.text.length === 0;
+    }
+
+    function just_added_blankline() {
+        if (just_added_newline()) {
+            if (output_lines.length === 1) {
+                return true; // start of the file and newline = blank
+            }
+
+            var line = output_lines[output_lines.length - 2];
+            return line.text.length === 0;
+        }
+        return false;
+    }
+
+    function allow_wrap_or_preserved_newline(force_linewrap) {
+        force_linewrap = (force_linewrap === undefined) ? false : force_linewrap;
+        if (opt.wrap_line_length && !force_linewrap) {
+            var line = output_lines[output_lines.length - 1];
+            var proposed_line_length = 0;
+            // never wrap the first token of a line.
+            if (line.text.length > 0) {
+                proposed_line_length = line.text.join('').length + token_text.length +
+                    (output_space_before_token ? 1 : 0);
+                if (proposed_line_length >= opt.wrap_line_length) {
+                    force_linewrap = true;
+                }
+            }
+        }
+        if (((opt.preserve_newlines && input_wanted_newline) || force_linewrap) && !just_added_newline()) {
+            print_newline(false, true);
+
+        }
+    }
+
+    function print_newline(force_newline, preserve_statement_flags) {
+        output_space_before_token = false;
+
+        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_lines.length === 1 && just_added_newline()) {
+            return; // no newline on start of file
+        }
+
+        if (force_newline || !just_added_newline()) {
+            flags.multiline_frame = true;
+            output_lines.push(create_output_line());
+        }
+    }
+
+    function print_token_line_indentation() {
+        if (just_added_newline()) {
+            var line = output_lines[output_lines.length - 1];
+            if (opt.keep_array_indentation && is_array(flags.mode) && input_wanted_newline) {
+                // prevent removing of this whitespace as redundant
+                line.text.push('');
+                for (var i = 0; i < whitespace_before_token.length; i += 1) {
+                    line.text.push(whitespace_before_token[i]);
+                }
+            } else {
+                if (preindent_string) {
+                    line.text.push(preindent_string);
+                }
+
+                print_indent_string(flags.indentation_level);
+            }
+        }
+    }
+
+    function print_indent_string(level) {
+        // Never indent your first output indent at the start of the file
+        if (output_lines.length > 1) {
+            var line = output_lines[output_lines.length - 1];
+
+            flags.line_indent_level = level;
+            for (var i = 0; i < level; i += 1) {
+                line.text.push(indent_string);
+            }
+        }
+    }
+
+    function print_token_space_before() {
+        var line = output_lines[output_lines.length - 1];
+        if (output_space_before_token && line.text.length) {
+            var last_output = line.text[line.text.length - 1];
+            if (last_output !== ' ' && last_output !== indent_string) { // prevent occassional duplicate space
+                line.text.push(' ');
+            }
+        }
+    }
+
+    function print_token(printable_token) {
+        printable_token = printable_token || token_text;
+        print_token_line_indentation();
+        print_token_space_before();
+        output_space_before_token = false;
+        output_lines[output_lines.length - 1].text.push(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 remove_redundant_indentation(frame) {
+        // This implementation is effective but has some issues:
+        //     - less than great performance due to array splicing
+        //     - 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) return;
+
+        // remove one indent from each line inside this section
+        var index = frame.start_line_index;
+        var splice_index = 0;
+        var line;
+
+        while (index < output_lines.length) {
+            line = output_lines[index];
+            index++;
+
+            // skip empty lines
+            if (line.text.length === 0) {
+                continue;
+            }
+
+            // skip the preindent string if present
+            if (preindent_string && line.text[0] === preindent_string) {
+                splice_index = 1;
+            } else {
+                splice_index = 0;
+            }
+
+            // remove one indent, if present
+            if (line.text[splice_index] === indent_string) {
+                line.text.splice(splice_index, 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) {
+                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;
+    }
+
+    function start_of_statement() {
+        if (
+                (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && token_type === 'TK_WORD') ||
+                (last_type === 'TK_RESERVED' && flags.last_text === 'do') ||
+                (last_type === 'TK_RESERVED' && flags.last_text === 'return' && !input_wanted_newline) ||
+                (last_type === 'TK_RESERVED' && flags.last_text === 'else' && !(token_type === 'TK_RESERVED' && 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
+                    && !(token_text === '--' || token_text === '++')
+                    && token_type !== 'TK_WORD' && token_type !== 'TK_RESERVED') ||
+                (flags.mode === MODE.ObjectLiteral && flags.last_text === ':' && flags.ternary_depth === 0)
+
+            ) {
+
+            set_mode(MODE.Statement);
+            indent();
+
+            if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && 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(
+                    token_type === 'TK_RESERVED' && in_array(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 in_array(what, arr) {
+        for (var i = 0; i < arr.length; i += 1) {
+            if (arr[i] === what) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    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;
+    }
+
+    function is_next(find) {
+        var local_pos = parser_pos;
+        var c = input.charAt(local_pos);
+        while (in_array(c, whitespace) && c !== find) {
+            local_pos++;
+            if (local_pos >= input_length) {
+                return false;
+            }
+            c = input.charAt(local_pos);
+        }
+        return c === find;
+    }
+
+    function get_next_token() {
+        var i, resulting_string;
+
+        n_newlines = 0;
+
+        if (parser_pos >= input_length) {
+            return ['', 'TK_EOF'];
+        }
+
+        input_wanted_newline = false;
+        whitespace_before_token = [];
+
+        var c = input.charAt(parser_pos);
+        parser_pos += 1;
+
+        while (in_array(c, whitespace)) {
+
+            if (c === '\n') {
+                n_newlines += 1;
+                whitespace_before_token = [];
+            } else if (n_newlines) {
+                if (c === indent_string) {
+                    whitespace_before_token.push(indent_string);
+                } else if (c !== '\r') {
+                    whitespace_before_token.push(' ');
+                }
+            }
+
+            if (parser_pos >= input_length) {
+                return ['', 'TK_EOF'];
+            }
+
+            c = input.charAt(parser_pos);
+            parser_pos += 1;
+        }
+
+        // NOTE: because beautifier doesn't fully parse, it doesn't use acorn.isIdentifierStart.
+        // It just treats all identifiers and numbers and such the same.
+        if (acorn.isIdentifierChar(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;
+                    }
+                }
+            }
+
+            // small and surprisingly unugly hack for 1E-10 representation
+            if (parser_pos !== input_length && c.match(/^[0-9]+[Ee]$/) && (input.charAt(parser_pos) === '-' || input.charAt(parser_pos) === '+')) {
+
+                var sign = input.charAt(parser_pos);
+                parser_pos += 1;
+
+                var t = get_next_token();
+                c += sign + t[0];
+                return [c, 'TK_WORD'];
+            }
+
+            if (!(last_type === 'TK_DOT' ||
+                    (last_type === 'TK_RESERVED' && in_array(flags.last_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
+                (opt.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_type === 'TK_RESERVED' && is_special_word(flags.last_text)) ||
+                (last_type === 'TK_END_EXPR' && in_array(previous_flags.mode, [MODE.Conditional, MODE.ForInitializer])) ||
+                (in_array(last_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 (parser_pos < input_length) {
+                if (sep === '/') {
+                    //
+                    // handle regexp
+                    //
+                    var in_char_class = false;
+                    while (esc || in_char_class || input.charAt(parser_pos) !== sep) {
+                        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;
+                        if (parser_pos >= input_length) {
+                            // incomplete string/rexp when end-of-file reached.
+                            // bail out with what had been received so far.
+                            return [resulting_string, 'TK_STRING'];
+                        }
+                    }
+                } else if (opt.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
+                    //
+                    while (esc || input.charAt(parser_pos) !== sep) {
+                        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 (parser_pos >= input_length) {
+                            // incomplete string/rexp when end-of-file reached.
+                            // bail out with what had been received so far.
+                            return [resulting_string, 'TK_STRING'];
+                        }
+                    }
+
+                }
+            }
+
+            parser_pos += 1;
+            resulting_string += sep;
+
+            if (has_char_escapes && opt.unescape_strings) {
+                resulting_string = unescape_string(resulting_string);
+            }
+
+            if (sep === '/') {
+                // regexps may have modifiers /regexp/MOD , so fetch those, too
+                while (parser_pos < input_length && in_array(input.charAt(parser_pos), wordchar)) {
+                    resulting_string += input.charAt(parser_pos);
+                    parser_pos += 1;
+                }
+            }
+            return [resulting_string, 'TK_STRING'];
+        }
+
+        if (c === '#') {
+
+
+            if (output_lines.length === 1 && output_lines[0].text.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://dxr.mozilla.org/mozilla-central/source/js/src/jsscan.cpp around line 1935
+            var sharp = '#';
+            if (parser_pos < input_length && in_array(input.charAt(parser_pos), digits)) {
+                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++;
+            }
+            flags.in_html_comment = true;
+            return [c, 'TK_COMMENT'];
+        }
+
+        if (c === '-' && flags.in_html_comment && input.substring(parser_pos - 1, parser_pos + 2) === '-->') {
+            flags.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 handle_start_expr() {
+        if (start_of_statement()) {
+            // The conditional starts the statement if appropriate.
+        }
+
+        var next_mode = MODE.Expression;
+        if (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, 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(input_wanted_newline);
+            // do nothing on (( and )( and ][ and ]( and .(
+        } else if (!(last_type === 'TK_RESERVED' && 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.jslint_happy) {
+                output_space_before_token = true;
+            }
+        } else if (last_type === 'TK_RESERVED' && (in_array(flags.last_text, 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 (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(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
+                trim_output();
+                output_space_before_token = false;
+            } else {
+                output_space_before_token = true;
+            }
+        }
+        if (token_text === ']' && opt.keep_array_indentation) {
+            print_token();
+            restore_mode();
+        } else {
+            restore_mode();
+            print_token();
+        }
+        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() {
+        set_mode(MODE.BlockStatement);
+
+        var empty_braces = is_next('}');
+        var empty_anonymous_function = empty_braces && flags.last_word === 'function' &&
+            last_type === 'TK_END_EXPR';
+
+        if (opt.brace_style === "expand") {
+            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 (start_of_statement()) {
+            // The conditional starts the statement if appropriate.
+        } else if (input_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 (token_type === 'TK_RESERVED' && 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 && (token_type === 'TK_RESERVED' && token_text === 'else')) {
+                flags.else_block = true;
+            } else {
+                while (flags.mode === MODE.Statement) {
+                    restore_mode();
+                }
+                flags.if_block = false;
+                flags.else_block = false;
+            }
+        }
+
+        if (token_type === 'TK_RESERVED' && (token_text === 'case' || (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 (token_type === 'TK_RESERVED' && token_text === 'function') {
+            if (in_array(flags.last_text, ['}', ';']) || (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 ( ! just_added_blankline() && ! flags.had_comment) {
+                    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'])) {
+                    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 (is_expression(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 (token_type === 'TK_RESERVED' && token_text === 'function') {
+            print_token();
+            flags.last_word = token_text;
+            return;
+        }
+
+        prefix = 'NONE';
+
+        if (last_type === 'TK_END_BLOCK') {
+            if (!(token_type === 'TK_RESERVED' && in_array(token_text, ['else', 'catch', 'finally']))) {
+                prefix = 'NEWLINE';
+            } else {
+                if (opt.brace_style === "expand" || opt.brace_style === "end-expand") {
+                    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 (token_type === 'TK_RESERVED' && in_array(token_text, line_starters) && flags.last_text !== ')') {
+            if (flags.last_text === 'else') {
+                prefix = 'SPACE';
+            } else {
+                prefix = 'NEWLINE';
+            }
+
+        }
+
+        if (token_type === 'TK_RESERVED' && in_array(token_text, ['else', 'catch', 'finally'])) {
+            if (last_type !== 'TK_END_BLOCK' || opt.brace_style === "expand" || opt.brace_style === "end-expand") {
+                print_newline();
+            } else {
+                trim_output(true);
+                var line = output_lines[output_lines.length - 1];
+                // If we trimmed and there's something other than a close block before us
+                // put a newline back in.  Handles '} // comment' scenario.
+                if (line.text[line.text.length - 1] !== '}') {
+                    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' || !(token_type === 'TK_RESERVED' && in_array(token_text, ['var', 'let', 'const']))) && flags.last_text !== ':') {
+                    // no need to force newline on 'var': for (var x = 0...)
+                    if (token_type === 'TK_RESERVED' && token_text === 'if' && flags.last_word === 'else' && flags.last_text !== '{') {
+                        // no newline for } else if {
+                        output_space_before_token = true;
+                    } else {
+                        print_newline();
+                    }
+                }
+            } else if (token_type === 'TK_RESERVED' && in_array(token_text, line_starters) && flags.last_text !== ')') {
+                print_newline();
+            }
+        } else if (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 = token_text;
+
+        if (token_type === 'TK_RESERVED' && token_text === 'do') {
+            flags.do_block = true;
+        }
+
+        if (token_type === 'TK_RESERVED' && 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();
+        if (flags.mode === MODE.ObjectLiteral) {
+            // if we're in OBJECT mode and see a semicolon, its invalid syntax
+            // recover back to treating this as a BLOCK
+            flags.mode = MODE.BlockStatement;
+        }
+    }
+
+    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() {
+        // Check if this is a BlockStatement that should be treated as a ObjectLiteral
+        if (token_text === ':' && flags.mode === MODE.BlockStatement &&
+                last_last_text === '{' &&
+                (last_type === 'TK_WORD' || last_type === 'TK_RESERVED')){
+            flags.mode = MODE.ObjectLiteral;
+        }
+
+        if (start_of_statement()) {
+            // The conditional starts the statement if appropriate.
+        }
+
+        var space_before = true;
+        var space_after = true;
+        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 (token_text === '*' && last_type === 'TK_DOT' && !last_last_text.match(/^\d+$/)) {
+            print_token();
+            return;
+        }
+
+        if (token_text === ':' && flags.in_case) {
+            flags.case_body = true;
+            indent();
+            print_token();
+            print_newline();
+            flags.in_case = false;
+            return;
+        }
+
+        if (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 (input_wanted_newline && (token_text === '--' || token_text === '++')) {
+            print_newline();
+        }
+
+        // Allow line wrapping between operators
+        if (last_type === 'TK_OPERATOR') {
+            allow_wrap_or_preserved_newline();
+        }
+
+        if (in_array(token_text, ['--', '++', '!', '~']) || (in_array(token_text, ['-', '+']) && (in_array(last_type, ['TK_START_BLOCK', 'TK_START_EXPR', 'TK_EQUALS', 'TK_OPERATOR']) || in_array(flags.last_text, 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') {
+                space_before = true;
+            }
+
+            if ((flags.mode === MODE.BlockStatement || flags.mode === MODE.Statement) && (flags.last_text === '{' || flags.last_text === ';')) {
+                // { foo; --i }
+                // foo(); --bar;
+                print_newline();
+            }
+        } else if (token_text === ':') {
+            if (flags.ternary_depth === 0) {
+                if (flags.mode === MODE.BlockStatement) {
+                    flags.mode = MODE.ObjectLiteral;
+                }
+                space_before = false;
+            } else {
+                flags.ternary_depth -= 1;
+            }
+        } else if (token_text === '?') {
+            flags.ternary_depth += 1;
+        } else if (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(token_text);
+        var j; // iterator for this case
+        var javadoc = false;
+        var starless = false;
+        var lastIndent = whitespace_before_token.join('');
+        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_lines[output_lines.length - 1].text.push(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 (input_wanted_newline) {
+            print_newline(false, true);
+        } else {
+            trim_output(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 (token_text[token_text.length - 1] === '\n') {
+            print_newline();
+        }
+    }
+}