io.lightlink.translator.beautify.js Maven / Gradle / Ivy
/*jslint onevar: false, plusplus: false */
/*
JS Beautifier
---------------
Written by Einar Lielmanis,
http://jsbeautifier.org/
Originally converted to javascript by Vital,
"End braces on own line" added by Chris J. Shull,
You are free to use this in any way you want, in case you find this useful or working for you.
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,
preserve_max_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" | "expand-strict"
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.
expand-strict: put brace on own line even in such cases:
var a =
{
a: 5,
b: 6
}
This mode may break your scripts - e.g "return { a: 1 }" will be broken into two lines, so beware.
space_before_conditional (default true) - should the space before conditional statement be added, "if(true)" vs "if (true)"
e.g
js_beautify(js_source_text, {
'indent_size': 1,
'indent_char': '\t'
});
*/
function js_beautify(js_source_text, options) {
var input, output, token_text, last_type, last_text, last_last_text, last_word, flags, flag_store, indent_string;
var whitespace, wordchar, punct, parser_pos, line_starters, digits;
var prefix, token_type, do_block_just_closed;
var wanted_newline, just_added_newline, n_newlines;
var preindent_string = '';
// Some interpreters have unexpected results with foo = baz || bar;
options = options ? options : {};
var opt_brace_style;
// 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");
var opt_indent_size = options.indent_size ? options.indent_size : 4;
var opt_indent_char = options.indent_char ? options.indent_char : ' ';
var opt_preserve_newlines = typeof options.preserve_newlines === 'undefined' ? true : options.preserve_newlines;
var opt_max_preserve_newlines = typeof options.max_preserve_newlines === 'undefined' ? false : options.max_preserve_newlines;
var opt_jslint_happy = options.jslint_happy === 'undefined' ? false : options.jslint_happy;
var opt_keep_array_indentation = typeof options.keep_array_indentation === 'undefined' ? false : options.keep_array_indentation;
var opt_space_before_conditional = typeof options.space_before_conditional === 'undefined' ? true : options.space_before_conditional;
var opt_indent_case = typeof options.indent_case === 'undefined' ? false : options.indent_case;
just_added_newline = false;
// cache the source's length.
var input_length = js_source_text.length;
function trim_output(eat_newlines) {
eat_newlines = typeof eat_newlines === 'undefined' ? false : eat_newlines;
while (output.length && (output[output.length - 1] === ' ' || output[output.length - 1] === indent_string || output[output.length - 1] === preindent_string || (eat_newlines && (output[output.length - 1] === '\n' || output[output.length - 1] === '\r')))) {
output.pop();
}
}
function trim(s) {
return s.replace(/^\s\s*|\s\s*$/, '');
}
// 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 force_newline() {
var old_keep_array_indentation = opt_keep_array_indentation;
opt_keep_array_indentation = false;
print_newline()
opt_keep_array_indentation = old_keep_array_indentation;
}
function print_newline(ignore_repeated) {
flags.eat_next_space = false;
if (opt_keep_array_indentation && is_array(flags.mode)) {
return;
}
ignore_repeated = typeof ignore_repeated === 'undefined' ? true : ignore_repeated;
flags.if_line = false;
trim_output();
if (!output.length) {
return; // no newline on start of file
}
if (output[output.length - 1] !== "\n" || !ignore_repeated) {
just_added_newline = true;
output.push("\n");
}
if (preindent_string) {
output.push(preindent_string);
}
for (var i = 0; i < flags.indentation_level; i += 1) {
output.push(indent_string);
}
if (flags.var_line && flags.var_line_reindented) {
output.push(indent_string); // skip space-stuffing, if indenting with a tab
}
if (flags.case_body) {
output.push(indent_string);
}
}
function print_single_space() {
if (last_type === 'TK_COMMENT') {
// no you will not print just a space after a comment
return print_newline(true);
}
if (flags.eat_next_space) {
flags.eat_next_space = false;
return;
}
var last_output = ' ';
if (output.length) {
last_output = output[output.length - 1];
}
if (last_output !== ' ' && last_output !== '\n' && last_output !== indent_string) { // prevent occassional duplicate space
output.push(' ');
}
}
function print_token() {
just_added_newline = false;
flags.eat_next_space = false;
output.push(token_text);
}
function indent() {
flags.indentation_level += 1;
}
function remove_indent() {
if (output.length && output[output.length - 1] === indent_string) {
output.pop();
}
}
function set_mode(mode) {
if (flags) {
flag_store.push(flags);
}
flags = {
previous_mode: flags ? flags.mode : 'BLOCK',
mode: mode,
var_line: false,
var_line_tainted: false,
var_line_reindented: false,
in_html_comment: false,
if_line: 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
eat_next_space: false,
indentation_baseline: -1,
indentation_level: (flags ? flags.indentation_level + (flags.case_body ? 1 : 0) + ((flags.var_line && flags.var_line_reindented) ? 1 : 0) : 0),
ternary_depth: 0
};
}
function is_array(mode) {
return mode === '[EXPRESSION]' || mode === '[INDENTED-EXPRESSION]';
}
function is_expression(mode) {
return in_array(mode, ['[EXPRESSION]', '(EXPRESSION)', '(FOR-EXPRESSION)', '(COND-EXPRESSION)']);
}
function restore_mode() {
do_block_just_closed = flags.mode === 'DO_BLOCK';
if (flag_store.length > 0) {
var mode = flags.mode;
flags = flag_store.pop();
flags.previous_mode = mode;
}
}
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 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 look_up(exclude) {
var local_pos = parser_pos;
var c = input.charAt(local_pos);
while (in_array(c, whitespace) && c != exclude) {
local_pos++;
if (local_pos >= input_length) return 0;
c = input.charAt(local_pos);
}
return c;
}
function get_next_token() {
n_newlines = 0;
if (parser_pos >= input_length) {
return ['', 'TK_EOF'];
}
wanted_newline = false;
var c = input.charAt(parser_pos);
parser_pos += 1;
var keep_whitespace = opt_keep_array_indentation && is_array(flags.mode);
if (keep_whitespace) {
//
// slight mess to allow nice preservation of array indentation and reindent that correctly
// first time when we get to the arrays:
// var a = [
// ....'something'
// we make note of whitespace_count = 4 into flags.indentation_baseline
// so we know that 4 whitespaces in original source match indent_level of reindented source
//
// and afterwards, when we get to
// 'something,
// .......'something else'
// we know that this should be indented to indent_level + (7 - indentation_baseline) spaces
//
var whitespace_count = 0;
while (in_array(c, whitespace)) {
if (c === "\n") {
trim_output();
output.push("\n");
just_added_newline = true;
whitespace_count = 0;
} else {
if (c === '\t') {
whitespace_count += 4;
} else if (c === '\r') {
// nothing
} else {
whitespace_count += 1;
}
}
if (parser_pos >= input_length) {
return ['', 'TK_EOF'];
}
c = input.charAt(parser_pos);
parser_pos += 1;
}
if (flags.indentation_baseline === -1) {
flags.indentation_baseline = whitespace_count;
}
if (just_added_newline) {
var i;
for (i = 0; i < flags.indentation_level + 1; i += 1) {
output.push(indent_string);
}
if (flags.indentation_baseline !== -1) {
for (i = 0; i < whitespace_count - flags.indentation_baseline; i++) {
output.push(' ');
}
}
}
} else {
while (in_array(c, whitespace)) {
if (c === "\n") {
n_newlines += ((opt_max_preserve_newlines) ? (n_newlines <= opt_max_preserve_newlines) ? 1 : 0 : 1);
}
if (parser_pos >= input_length) {
return ['', 'TK_EOF'];
}
c = input.charAt(parser_pos);
parser_pos += 1;
}
if (opt_preserve_newlines) {
if (n_newlines > 1) {
for (i = 0; i < n_newlines; i += 1) {
print_newline(i === 0);
just_added_newline = true;
}
}
}
wanted_newline = n_newlines > 0;
}
if (in_array(c, wordchar)) {
if (parser_pos < input_length) {
while (in_array(input.charAt(parser_pos), wordchar)) {
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(parser_pos);
c += sign + t[0];
return [c, 'TK_WORD'];
}
if (c === 'in') { // hack for 'in' operator
return [c, 'TK_OPERATOR'];
}
if (wanted_newline && last_type !== 'TK_OPERATOR' && last_type !== 'TK_EQUALS' && !flags.if_line && (opt_preserve_newlines || last_text !== 'var')) {
print_newline();
}
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;
}
}
parser_pos += 1;
if (wanted_newline) {
print_newline();
}
return [comment, 'TK_COMMENT'];
}
}
if (c === "'" || // string
c === '"' || // string
(c === '/' && ((last_type === 'TK_WORD' && is_special_word(last_text)) || (last_text === ')' && in_array(flags.previous_mode, ['(COND-EXPRESSION)', '(FOR-EXPRESSION)'])) || (last_type === 'TK_COMMENT' || last_type === 'TK_START_EXPR' || last_type === 'TK_START_BLOCK' || last_type === 'TK_END_BLOCK' || last_type === 'TK_OPERATOR' || last_type === 'TK_EQUALS' || last_type === 'TK_EOF' || last_type === 'TK_SEMICOLON')))) { // regexp
var sep = c;
var esc = false;
var resulting_string = c;
if (parser_pos < input_length) {
if (sep === '/') {
//
// handle regexp separately...
//
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 {
//
// and handle string also separately
//
while (esc || input.charAt(parser_pos) !== sep) {
resulting_string += input.charAt(parser_pos);
if (!esc) {
esc = input.charAt(parser_pos) === '\\';
} 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'];
}
}
}
}
parser_pos += 1;
resulting_string += sep;
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.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;
}
output.push(trim(resulting_string) + '\n');
print_newline();
return get_next_token();
}
// 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 && 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) === '') {
flags.in_html_comment = false;
parser_pos += 2;
if (wanted_newline) {
print_newline();
}
return ['-->', 'TK_COMMENT'];
}
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_EQUALS'];
} else {
return [c, 'TK_OPERATOR'];
}
}
return [c, 'TK_UNKNOWN'];
}
//----------------------------------
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;
last_word = ''; // last 'TK_WORD' passed
last_type = 'TK_START_EXPR'; // last token type
last_text = ''; // last token text
last_last_text = ''; // pre-last token text
output = [];
do_block_just_closed = false;
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,if,switch,case,default,for,while,break,function'.split(',');
// states showing if we are currently in expression (i.e. "if" case) - 'EXPRESSION', or in usual block (like, procedure), 'BLOCK'.
// some formatting depends on that.
flag_store = [];
set_mode('BLOCK');
parser_pos = 0;
while (true) {
var t = get_next_token(parser_pos);
token_text = t[0];
token_type = t[1];
if (token_type === 'TK_EOF') {
break;
}
switch (token_type) {
case 'TK_START_EXPR':
if (token_text === '[') {
if (last_type === 'TK_WORD' || last_text === ')') {
// this is array index specifier, break immediately
// a[x], fn()[x]
if (in_array(last_text, line_starters)) {
print_single_space();
}
set_mode('(EXPRESSION)');
print_token();
break;
}
if (flags.mode === '[EXPRESSION]' || flags.mode === '[INDENTED-EXPRESSION]') {
if (last_last_text === ']' && last_text === ',') {
// ], [ goes to new line
if (flags.mode === '[EXPRESSION]') {
flags.mode = '[INDENTED-EXPRESSION]';
if (!opt_keep_array_indentation) {
indent();
}
}
set_mode('[EXPRESSION]');
if (!opt_keep_array_indentation) {
print_newline();
}
} else if (last_text === '[') {
if (flags.mode === '[EXPRESSION]') {
flags.mode = '[INDENTED-EXPRESSION]';
if (!opt_keep_array_indentation) {
indent();
}
}
set_mode('[EXPRESSION]');
if (!opt_keep_array_indentation) {
print_newline();
}
} else {
set_mode('[EXPRESSION]');
}
} else {
set_mode('[EXPRESSION]');
}
} else {
if (last_word === 'for') {
set_mode('(FOR-EXPRESSION)');
} else if (in_array(last_word, ['if', 'while'])) {
set_mode('(COND-EXPRESSION)');
} else {
set_mode('(EXPRESSION)');
}
}
if (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' || last_text === '.') {
if (wanted_newline) {
print_newline();
}
// do nothing on (( and )( and ][ and ]( and .(
} else if (last_type !== 'TK_WORD' && last_type !== 'TK_OPERATOR') {
print_single_space();
} else if (last_word === 'function' || last_word === 'typeof') {
// function() vs function ()
if (opt_jslint_happy) {
print_single_space();
}
} else if (in_array(last_text, line_starters) || last_text === 'catch') {
if (opt_space_before_conditional) {
print_single_space();
}
}
print_token();
break;
case 'TK_END_EXPR':
if (token_text === ']') {
if (opt_keep_array_indentation) {
if (last_text === '}') {
// trim_output();
// print_newline(true);
remove_indent();
print_token();
restore_mode();
break;
}
} else {
if (flags.mode === '[INDENTED-EXPRESSION]') {
if (last_text === ']') {
restore_mode();
print_newline();
print_token();
break;
}
}
}
}
restore_mode();
print_token();
break;
case 'TK_START_BLOCK':
if (last_word === 'do') {
set_mode('DO_BLOCK');
} else {
set_mode('BLOCK');
}
if (opt_brace_style == "expand" || opt_brace_style == "expand-strict") {
var empty_braces = false;
if (opt_brace_style == "expand-strict") {
empty_braces = (look_up() == '}');
if (!empty_braces) {
print_newline(true);
}
} else {
if (last_type !== 'TK_OPERATOR') {
if (last_text === '=' || (is_special_word(last_text) && last_text !== 'else')) {
print_single_space();
} else {
print_newline(true);
}
}
}
print_token();
if (!empty_braces) indent();
} else {
if (last_type !== 'TK_OPERATOR' && last_type !== 'TK_START_EXPR') {
if (last_type === 'TK_START_BLOCK') {
print_newline();
} else {
print_single_space();
}
} else {
// if TK_OPERATOR or TK_START_EXPR
if (is_array(flags.previous_mode) && last_text === ',') {
if (last_last_text === '}') {
// }, { in array context
print_single_space();
} else {
print_newline(); // [a, b, c, {
}
}
}
indent();
print_token();
}
break;
case 'TK_END_BLOCK':
restore_mode();
if (opt_brace_style == "expand" || opt_brace_style == "expand-strict") {
if (last_text !== '{') {
print_newline();
}
print_token();
} else {
if (last_type === 'TK_START_BLOCK') {
// nothing
if (just_added_newline) {
remove_indent();
} else {
// {}
trim_output();
}
} else {
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();
}
}
print_token();
}
break;
case 'TK_WORD':
// no, it's not you. even I have problems understanding how this works
// and what does what.
if (do_block_just_closed) {
// do {} ## while ()
print_single_space();
print_token();
print_single_space();
do_block_just_closed = false;
break;
}
if (token_text === 'function') {
if (flags.var_line) {
flags.var_line_reindented = true;
}
if ((just_added_newline || last_text === ';') && last_text !== '{' && last_type != 'TK_BLOCK_COMMENT' && last_type != 'TK_COMMENT') {
// make sure there is a nice clean space of at least one blank line
// before a new function definition
n_newlines = just_added_newline ? n_newlines : 0;
if (!opt_preserve_newlines) {
n_newlines = 1;
}
for (var i = 0; i < 2 - n_newlines; i++) {
print_newline(false);
}
}
}
if (token_text === 'case' || (token_text === 'default' && flags.in_case_statement)) {
if (last_text === ':' || flags.case_body) {
// switch cases following one another
remove_indent();
} else {
// case statement starts in the same line where switch
if (!opt_indent_case) flags.indentation_level--;
print_newline();
if (!opt_indent_case) flags.indentation_level++;
}
print_token();
flags.in_case = true;
flags.in_case_statement = true;
flags.case_body = false;
break;
}
prefix = 'NONE';
if (last_type === 'TK_END_BLOCK') {
if (!in_array(token_text.toLowerCase(), ['else', 'catch', 'finally'])) {
prefix = 'NEWLINE';
} else {
if (opt_brace_style == "expand" || opt_brace_style == "end-expand" || opt_brace_style == "expand-strict") {
prefix = 'NEWLINE';
} else {
prefix = 'SPACE';
print_single_space();
}
}
} else if (last_type === 'TK_SEMICOLON' && (flags.mode === 'BLOCK' || flags.mode === 'DO_BLOCK')) {
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_WORD') {
if (last_text === 'else') {
// eat newlines between ...else *** some_op...
// won't preserve extra newlines in this place (if any), but don't care that much
trim_output(true);
}
prefix = 'SPACE';
} else if (last_type === 'TK_START_BLOCK') {
prefix = 'NEWLINE';
} else if (last_type === 'TK_END_EXPR') {
print_single_space();
prefix = 'NEWLINE';
}
if (in_array(token_text, line_starters) && last_text !== ')') {
if (last_text == 'else') {
prefix = 'SPACE';
} else {
prefix = 'NEWLINE';
}
if (token_text === 'function' && (last_text === 'get' || last_text === 'set')) {
prefix = 'SPACE';
}
}
if (flags.if_line && last_type === 'TK_END_EXPR') {
flags.if_line = false;
}
if (in_array(token_text.toLowerCase(), ['else', 'catch', 'finally'])) {
if (last_type !== 'TK_END_BLOCK' || opt_brace_style == "expand" || opt_brace_style == "end-expand" || opt_brace_style == "expand-strict") {
print_newline();
} else {
trim_output(true);
print_single_space();
}
} else if (prefix === 'NEWLINE') {
if ((last_type === 'TK_START_EXPR' || last_text === '=' || last_text === ',') && token_text === 'function') {
// no need to force newline on 'function': (function
// DONOTHING
} else if (token_text === 'function' && last_text == 'new') {
print_single_space();
} else if (is_special_word(last_text)) {
// no newline between 'return nnn'
print_single_space();
} else if (last_type !== 'TK_END_EXPR') {
if ((last_type !== 'TK_START_EXPR' || token_text !== 'var') && last_text !== ':') {
// no need to force newline on 'var': for (var x = 0...)
if (token_text === 'if' && last_word === 'else' && last_text !== '{') {
// no newline for } else if {
print_single_space();
} else {
flags.var_line = false;
flags.var_line_reindented = false;
print_newline();
}
}
} else if (in_array(token_text, line_starters) && last_text != ')') {
flags.var_line = false;
flags.var_line_reindented = false;
print_newline();
}
} else if (is_array(flags.mode) && last_text === ',' && last_last_text === '}') {
print_newline(); // }, in lists get a newline treatment
} else if (prefix === 'SPACE') {
print_single_space();
}
print_token();
last_word = token_text;
if (token_text === 'var') {
flags.var_line = true;
flags.var_line_reindented = false;
flags.var_line_tainted = false;
}
if (token_text === 'if') {
flags.if_line = true;
}
if (token_text === 'else') {
flags.if_line = false;
}
break;
case 'TK_SEMICOLON':
print_token();
flags.var_line = false;
flags.var_line_reindented = false;
if (flags.mode == 'OBJECT') {
// OBJECT mode is weird and doesn't get reset too well.
flags.mode = 'BLOCK';
}
break;
case 'TK_STRING':
if (last_type === 'TK_END_EXPR' && in_array(flags.previous_mode, ['(COND-EXPRESSION)', '(FOR-EXPRESSION)'])) {
print_single_space();
} else if (last_type == 'TK_STRING' || last_type === 'TK_START_BLOCK' || last_type === 'TK_END_BLOCK' || last_type === 'TK_SEMICOLON') {
print_newline();
} else if (last_type === 'TK_WORD') {
print_single_space();
}
print_token();
break;
case 'TK_EQUALS':
if (flags.var_line) {
// just got an '=' in a var-line, different formatting/line-breaking, etc will now be done
flags.var_line_tainted = true;
}
print_single_space();
print_token();
print_single_space();
break;
case 'TK_OPERATOR':
var space_before = true;
var space_after = true;
if (flags.var_line && token_text === ',' && (is_expression(flags.mode))) {
// do not break on comma, for(var a = 1, b = 2)
flags.var_line_tainted = false;
}
if (flags.var_line) {
if (token_text === ',') {
if (flags.var_line_tainted) {
print_token();
flags.var_line_reindented = true;
flags.var_line_tainted = false;
print_newline();
break;
} else {
flags.var_line_tainted = false;
}
// } else if (token_text === ':') {
// hmm, when does this happen? tests don't catch this
// flags.var_line = false;
}
}
if (is_special_word(last_text)) {
// "return" had a special handling in TK_WORD. Now we need to return the favor
print_single_space();
print_token();
break;
}
// hack for actionscript's import .*;
if (token_text == '*' && last_type == 'TK_UNKNOWN' && !last_last_text.match(/^\d+$/)) {
print_token();
break;
}
if (token_text === ':' && flags.in_case) {
if (opt_indent_case) flags.case_body = true;
print_token(); // colon really asks for separate treatment
print_newline();
flags.in_case = false;
break;
}
if (token_text === '::') {
// no spaces around exotic namespacing syntax operator
print_token();
break;
}
if (token_text === ',') {
if (flags.var_line) {
if (flags.var_line_tainted) {
print_token();
print_newline();
flags.var_line_tainted = false;
} else {
print_token();
print_single_space();
}
} else if (last_type === 'TK_END_BLOCK' && flags.mode !== "(EXPRESSION)") {
print_token();
if (flags.mode === 'OBJECT' && last_text === '}') {
print_newline();
} else {
print_single_space();
}
} else {
if (flags.mode === 'OBJECT') {
print_token();
print_newline();
} else {
// EXPR or DO_BLOCK
print_token();
print_single_space();
}
}
break;
// } else if (in_array(token_text, ['--', '++', '!']) || (in_array(token_text, ['-', '+']) && (in_array(last_type, ['TK_START_BLOCK', 'TK_START_EXPR', 'TK_EQUALS']) || in_array(last_text, line_starters) || in_array(last_text, ['==', '!=', '+=', '-=', '*=', '/=', '+', '-'])))) {
} else 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(last_text, line_starters)))) {
// unary operators (and binary +/- pretending to be unary) special cases
space_before = false;
space_after = false;
if (last_text === ';' && is_expression(flags.mode)) {
// for (;; ++i)
// ^^^
space_before = true;
}
if (last_type === 'TK_WORD' && in_array(last_text, line_starters)) {
space_before = true;
}
if (flags.mode === 'BLOCK' && (last_text === '{' || last_text === ';')) {
// { foo; --i }
// foo(); --bar;
print_newline();
}
} else if (token_text === '.') {
// decimal digits or object.property
space_before = false;
} else if (token_text === ':') {
if (flags.ternary_depth == 0) {
if (flags.mode == 'BLOCK') {
flags.mode = 'OBJECT';
}
space_before = false;
} else {
flags.ternary_depth -= 1;
}
} else if (token_text === '?') {
flags.ternary_depth += 1;
}
if (space_before) {
print_single_space();
}
print_token();
if (space_after) {
print_single_space();
}
if (token_text === '!') {
// flags.eat_next_space = true;
}
break;
case 'TK_BLOCK_COMMENT':
var lines = split_newlines(token_text);
if (all_lines_start_with(lines.slice(1), '*')) {
// javadoc: reformat and reindent
print_newline();
output.push(lines[0]);
for (i = 1; i < lines.length; i++) {
print_newline();
output.push(' ');
output.push(trim(lines[i]));
}
} else {
// simple block comment: leave intact
if (lines.length > 1) {
// multiline comment block starts with a new line
print_newline();
} else {
// single-line /* comment */ stays where it is
if (last_type === 'TK_END_BLOCK') {
print_newline();
} else {
print_single_space();
}
}
for (i = 0; i < lines.length; i++) {
output.push(lines[i]);
output.push("\n");
}
}
if (look_up('\n') != '\n') print_newline();
break;
case 'TK_INLINE_COMMENT':
print_single_space();
print_token();
if (is_expression(flags.mode)) {
print_single_space();
} else {
force_newline();
}
break;
case 'TK_COMMENT':
if (last_type == 'TK_COMMENT') {
print_newline();
if (wanted_newline) {
print_newline(false);
}
} else {
if (wanted_newline) {
print_newline();
} else {
print_single_space();
}
}
print_token();
if (look_up('\n') != '\n') force_newline();
break;
case 'TK_UNKNOWN':
if (is_special_word(last_text)) {
print_single_space();
}
print_token();
break;
}
last_last_text = last_text;
last_type = token_type;
last_text = token_text;
}
var sweet_code = preindent_string + output.join('').replace(/[\r\n ]+$/, '');
return sweet_code;
}
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