removing appmgt

This commit is contained in:
Chathura Ekanayake 2017-10-03 10:39:21 +05:30
parent c8e8b1d930
commit 6d3d7e3d88
32591 changed files with 0 additions and 3330192 deletions

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## 1.0.4
- Added license file
## 1.0.3
- Replaced `let` with `var` in `lib/btoa.js`
- Follow up from `1.0.2`
- Resolves https://github.com/jsdom/abab/issues/18
## 1.0.2
- Replaced `const` with `var` in `index.js`
- Allows use of `abab` in the browser without a transpilation step
- Resolves https://github.com/jsdom/abab/issues/15

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Both the original source code and new contributions in this repository are released under the [W3C 3-clause BSD license](https://github.com/w3c/web-platform-tests/blob/master/LICENSE.md#w3c-3-clause-bsd-license).
# W3C 3-clause BSD License
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of works must retain the original copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the original copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of the W3C nor the names of its contributors may be used to endorse or promote products derived from this work without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# abab
[![npm version](https://badge.fury.io/js/abab.svg)](https://www.npmjs.com/package/abab) [![Build Status](https://travis-ci.org/jsdom/abab.svg?branch=master)](https://travis-ci.org/jsdom/abab)
A module that implements `window.atob` and `window.btoa` according to the [WHATWG spec](https://html.spec.whatwg.org/multipage/webappapis.html#atob). The code is originally from [w3c/web-platform-tests](https://github.com/w3c/web-platform-tests/blob/master/html/webappapis/atob/base64.html).
Compatibility: Node.js version 3+ and all major browsers (using browserify or webpack)
Install with `npm`:
```sh
npm install abab
```
## API
### `btoa` (base64 encode)
```js
const btoa = require('abab').btoa;
btoa('Hello, world!'); // 'SGVsbG8sIHdvcmxkIQ=='
```
### `atob` (base64 decode)
```js
const atob = require('abab').atob;
atob('SGVsbG8sIHdvcmxkIQ=='); // 'Hello, world!'
```
#### Valid characters
[Per the spec](https://html.spec.whatwg.org/multipage/webappapis.html#atob:dom-windowbase64-btoa-3), `btoa` will accept strings "containing only characters in the range `U+0000` to `U+00FF`." If passed a string with characters above `U+00FF`, `btoa` will return `null`. If `atob` is passed a string that is not base64-valid, it will also return `null`. In both cases when `null` is returned, the spec calls for throwing a `DOMException` of type `InvalidCharacterError`.
## Browsers
If you want to include just one of the methods to save bytes in your client-side code, you can `require` the desired module directly.
```js
var atob = require('abab/lib/atob');
var btoa = require('abab/lib/btoa');
```
-----
### Checklists
If you're **submitting a PR** or **deploying to npm**, please use the [checklists in CONTRIBUTING.md](https://github.com/jsdom/abab/blob/master/CONTRIBUTING.md#checklists)
### Remembering `atob` vs. `btoa`
Here's a mnemonic that might be useful: if you have a plain string and want to base64 encode it, then decode it, `btoa` is what you run before (**b**efore - **b**toa), and `atob` is what you run after (**a**fter - **a**tob).

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'use strict';
var atob = require('./lib/atob');
var btoa = require('./lib/btoa');
module.exports = {
atob: atob,
btoa: btoa
};

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'use strict';
/**
* Implementation of atob() according to the HTML spec, except that instead of
* throwing INVALID_CHARACTER_ERR we return null.
*/
function atob(input) {
// WebIDL requires DOMStrings to just be converted using ECMAScript
// ToString, which in our case amounts to calling String().
input = String(input);
// "Remove all space characters from input."
input = input.replace(/[ \t\n\f\r]/g, '');
// "If the length of input divides by 4 leaving no remainder, then: if
// input ends with one or two U+003D EQUALS SIGN (=) characters, remove
// them from input."
if (input.length % 4 == 0 && /==?$/.test(input)) {
input = input.replace(/==?$/, '');
}
// "If the length of input divides by 4 leaving a remainder of 1, throw an
// INVALID_CHARACTER_ERR exception and abort these steps."
//
// "If input contains a character that is not in the following list of
// characters and character ranges, throw an INVALID_CHARACTER_ERR
// exception and abort these steps:
//
// U+002B PLUS SIGN (+)
// U+002F SOLIDUS (/)
// U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9)
// U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z
// U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER Z"
if (input.length % 4 == 1 || !/^[+/0-9A-Za-z]*$/.test(input)) {
return null;
}
// "Let output be a string, initially empty."
var output = '';
// "Let buffer be a buffer that can have bits appended to it, initially
// empty."
//
// We append bits via left-shift and or. accumulatedBits is used to track
// when we've gotten to 24 bits.
var buffer = 0;
var accumulatedBits = 0;
// "While position does not point past the end of input, run these
// substeps:"
for (var i = 0; i < input.length; i++) {
// "Find the character pointed to by position in the first column of
// the following table. Let n be the number given in the second cell of
// the same row."
//
// "Append to buffer the six bits corresponding to number, most
// significant bit first."
//
// atobLookup() implements the table from the spec.
buffer <<= 6;
buffer |= atobLookup(input[i]);
// "If buffer has accumulated 24 bits, interpret them as three 8-bit
// big-endian numbers. Append the three characters with code points
// equal to those numbers to output, in the same order, and then empty
// buffer."
accumulatedBits += 6;
if (accumulatedBits == 24) {
output += String.fromCharCode((buffer & 0xff0000) >> 16);
output += String.fromCharCode((buffer & 0xff00) >> 8);
output += String.fromCharCode(buffer & 0xff);
buffer = accumulatedBits = 0;
}
// "Advance position by one character."
}
// "If buffer is not empty, it contains either 12 or 18 bits. If it
// contains 12 bits, discard the last four and interpret the remaining
// eight as an 8-bit big-endian number. If it contains 18 bits, discard the
// last two and interpret the remaining 16 as two 8-bit big-endian numbers.
// Append the one or two characters with code points equal to those one or
// two numbers to output, in the same order."
if (accumulatedBits == 12) {
buffer >>= 4;
output += String.fromCharCode(buffer);
} else if (accumulatedBits == 18) {
buffer >>= 2;
output += String.fromCharCode((buffer & 0xff00) >> 8);
output += String.fromCharCode(buffer & 0xff);
}
// "Return output."
return output;
}
/**
* A lookup table for atob(), which converts an ASCII character to the
* corresponding six-bit number.
*/
function atobLookup(chr) {
if (/[A-Z]/.test(chr)) {
return chr.charCodeAt(0) - 'A'.charCodeAt(0);
}
if (/[a-z]/.test(chr)) {
return chr.charCodeAt(0) - 'a'.charCodeAt(0) + 26;
}
if (/[0-9]/.test(chr)) {
return chr.charCodeAt(0) - '0'.charCodeAt(0) + 52;
}
if (chr == '+') {
return 62;
}
if (chr == '/') {
return 63;
}
// Throw exception; should not be hit in tests
}
module.exports = atob;

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'use strict';
/**
* btoa() as defined by the HTML5 spec, which mostly just references RFC4648.
*/
function btoa(s) {
var i;
// String conversion as required by WebIDL.
s = String(s);
// "The btoa() method must throw an INVALID_CHARACTER_ERR exception if the
// method's first argument contains any character whose code point is
// greater than U+00FF."
for (i = 0; i < s.length; i++) {
if (s.charCodeAt(i) > 255) {
return null;
}
}
var out = '';
for (i = 0; i < s.length; i += 3) {
var groupsOfSix = [undefined, undefined, undefined, undefined];
groupsOfSix[0] = s.charCodeAt(i) >> 2;
groupsOfSix[1] = (s.charCodeAt(i) & 0x03) << 4;
if (s.length > i + 1) {
groupsOfSix[1] |= s.charCodeAt(i + 1) >> 4;
groupsOfSix[2] = (s.charCodeAt(i + 1) & 0x0f) << 2;
}
if (s.length > i + 2) {
groupsOfSix[2] |= s.charCodeAt(i + 2) >> 6;
groupsOfSix[3] = s.charCodeAt(i + 2) & 0x3f;
}
for (var j = 0; j < groupsOfSix.length; j++) {
if (typeof groupsOfSix[j] == 'undefined') {
out += '=';
} else {
out += btoaLookup(groupsOfSix[j]);
}
}
}
return out;
}
/**
* Lookup table for btoa(), which converts a six-bit number into the
* corresponding ASCII character.
*/
function btoaLookup(idx) {
if (idx < 26) {
return String.fromCharCode(idx + 'A'.charCodeAt(0));
}
if (idx < 52) {
return String.fromCharCode(idx - 26 + 'a'.charCodeAt(0));
}
if (idx < 62) {
return String.fromCharCode(idx - 52 + '0'.charCodeAt(0));
}
if (idx == 62) {
return '+';
}
if (idx == 63) {
return '/';
}
// Throw INVALID_CHARACTER_ERR exception here -- won't be hit in the tests.
}
module.exports = btoa;

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{
"_args": [
[
"abab@^1.0.3",
"/home/wso2/projects/wso2/iot/chathura/device-mgt/carbon-device-mgt/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.ui/src/main/resources/publisher/node_modules/jsdom"
]
],
"_from": "abab@>=1.0.3 <2.0.0",
"_id": "abab@1.0.4",
"_inCache": true,
"_installable": true,
"_location": "/abab",
"_nodeVersion": "4.5.0",
"_npmOperationalInternal": {
"host": "s3://npm-registry-packages",
"tmp": "tmp/abab-1.0.4.tgz_1505957653831_0.4382179556414485"
},
"_npmUser": {
"email": "gcarpenterv@gmail.com",
"name": "jeffcarp"
},
"_npmVersion": "2.15.9",
"_phantomChildren": {},
"_requested": {
"name": "abab",
"raw": "abab@^1.0.3",
"rawSpec": "^1.0.3",
"scope": null,
"spec": ">=1.0.3 <2.0.0",
"type": "range"
},
"_requiredBy": [
"/jsdom"
],
"_resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
"_shasum": "5faad9c2c07f60dd76770f71cf025b62a63cfd4e",
"_shrinkwrap": null,
"_spec": "abab@^1.0.3",
"_where": "/home/wso2/projects/wso2/iot/chathura/device-mgt/carbon-device-mgt/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.ui/src/main/resources/publisher/node_modules/jsdom",
"author": {
"email": "gcarpenterv@gmail.com",
"name": "Jeff Carpenter"
},
"bugs": {
"url": "https://github.com/jsdom/abab/issues"
},
"dependencies": {},
"description": "WHATWG spec-compliant implementations of window.atob and window.btoa.",
"devDependencies": {
"babel-core": "^6.1.4",
"babel-loader": "^6.1.0",
"babel-preset-es2015": "^6.1.4",
"eslint": "^1.3.1",
"jscs": "^2.1.1",
"karma": "^0.13.10",
"karma-cli": "^0.1.1",
"karma-firefox-launcher": "^0.1.6",
"karma-mocha": "^0.2.0",
"karma-sauce-launcher": "^0.2.14",
"karma-webpack": "^1.7.0",
"mocha": "^2.2.5",
"webpack": "^1.12.2"
},
"directories": {},
"dist": {
"shasum": "5faad9c2c07f60dd76770f71cf025b62a63cfd4e",
"tarball": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz"
},
"files": [
"index.js",
"lib/"
],
"gitHead": "c98068b06b4321949a8195408360ca84140d795d",
"homepage": "https://github.com/jsdom/abab#readme",
"keywords": [
"atob",
"browser",
"btoa"
],
"license": "ISC",
"main": "index.js",
"maintainers": [
{
"name": "jeffcarp",
"email": "gcarpenterv@gmail.com"
}
],
"name": "abab",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "git+https://github.com/jsdom/abab.git"
},
"scripts": {
"karma": "karma start",
"lint": "jscs . && eslint .",
"mocha": "mocha test/node",
"test": "npm run lint && npm run mocha && npm run karma"
},
"version": "1.0.4"
}

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1.3.4 / 2017-08-22
==================
* deps: mime-types@~2.1.16
- deps: mime-db@~1.29.0
1.3.3 / 2016-05-02
==================
* deps: mime-types@~2.1.11
- deps: mime-db@~1.23.0
* deps: negotiator@0.6.1
- perf: improve `Accept` parsing speed
- perf: improve `Accept-Charset` parsing speed
- perf: improve `Accept-Encoding` parsing speed
- perf: improve `Accept-Language` parsing speed
1.3.2 / 2016-03-08
==================
* deps: mime-types@~2.1.10
- Fix extension of `application/dash+xml`
- Update primary extension for `audio/mp4`
- deps: mime-db@~1.22.0
1.3.1 / 2016-01-19
==================
* deps: mime-types@~2.1.9
- deps: mime-db@~1.21.0
1.3.0 / 2015-09-29
==================
* deps: mime-types@~2.1.7
- deps: mime-db@~1.19.0
* deps: negotiator@0.6.0
- Fix including type extensions in parameters in `Accept` parsing
- Fix parsing `Accept` parameters with quoted equals
- Fix parsing `Accept` parameters with quoted semicolons
- Lazy-load modules from main entry point
- perf: delay type concatenation until needed
- perf: enable strict mode
- perf: hoist regular expressions
- perf: remove closures getting spec properties
- perf: remove a closure from media type parsing
- perf: remove property delete from media type parsing
1.2.13 / 2015-09-06
===================
* deps: mime-types@~2.1.6
- deps: mime-db@~1.18.0
1.2.12 / 2015-07-30
===================
* deps: mime-types@~2.1.4
- deps: mime-db@~1.16.0
1.2.11 / 2015-07-16
===================
* deps: mime-types@~2.1.3
- deps: mime-db@~1.15.0
1.2.10 / 2015-07-01
===================
* deps: mime-types@~2.1.2
- deps: mime-db@~1.14.0
1.2.9 / 2015-06-08
==================
* deps: mime-types@~2.1.1
- perf: fix deopt during mapping
1.2.8 / 2015-06-07
==================
* deps: mime-types@~2.1.0
- deps: mime-db@~1.13.0
* perf: avoid argument reassignment & argument slice
* perf: avoid negotiator recursive construction
* perf: enable strict mode
* perf: remove unnecessary bitwise operator
1.2.7 / 2015-05-10
==================
* deps: negotiator@0.5.3
- Fix media type parameter matching to be case-insensitive
1.2.6 / 2015-05-07
==================
* deps: mime-types@~2.0.11
- deps: mime-db@~1.9.1
* deps: negotiator@0.5.2
- Fix comparing media types with quoted values
- Fix splitting media types with quoted commas
1.2.5 / 2015-03-13
==================
* deps: mime-types@~2.0.10
- deps: mime-db@~1.8.0
1.2.4 / 2015-02-14
==================
* Support Node.js 0.6
* deps: mime-types@~2.0.9
- deps: mime-db@~1.7.0
* deps: negotiator@0.5.1
- Fix preference sorting to be stable for long acceptable lists
1.2.3 / 2015-01-31
==================
* deps: mime-types@~2.0.8
- deps: mime-db@~1.6.0
1.2.2 / 2014-12-30
==================
* deps: mime-types@~2.0.7
- deps: mime-db@~1.5.0
1.2.1 / 2014-12-30
==================
* deps: mime-types@~2.0.5
- deps: mime-db@~1.3.1
1.2.0 / 2014-12-19
==================
* deps: negotiator@0.5.0
- Fix list return order when large accepted list
- Fix missing identity encoding when q=0 exists
- Remove dynamic building of Negotiator class
1.1.4 / 2014-12-10
==================
* deps: mime-types@~2.0.4
- deps: mime-db@~1.3.0
1.1.3 / 2014-11-09
==================
* deps: mime-types@~2.0.3
- deps: mime-db@~1.2.0
1.1.2 / 2014-10-14
==================
* deps: negotiator@0.4.9
- Fix error when media type has invalid parameter
1.1.1 / 2014-09-28
==================
* deps: mime-types@~2.0.2
- deps: mime-db@~1.1.0
* deps: negotiator@0.4.8
- Fix all negotiations to be case-insensitive
- Stable sort preferences of same quality according to client order
1.1.0 / 2014-09-02
==================
* update `mime-types`
1.0.7 / 2014-07-04
==================
* Fix wrong type returned from `type` when match after unknown extension
1.0.6 / 2014-06-24
==================
* deps: negotiator@0.4.7
1.0.5 / 2014-06-20
==================
* fix crash when unknown extension given
1.0.4 / 2014-06-19
==================
* use `mime-types`
1.0.3 / 2014-06-11
==================
* deps: negotiator@0.4.6
- Order by specificity when quality is the same
1.0.2 / 2014-05-29
==================
* Fix interpretation when header not in request
* deps: pin negotiator@0.4.5
1.0.1 / 2014-01-18
==================
* Identity encoding isn't always acceptable
* deps: negotiator@~0.4.0
1.0.0 / 2013-12-27
==================
* Genesis

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(The MIT License)
Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
Copyright (c) 2015 Douglas Christopher Wilson <doug@somethingdoug.com>
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.

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# accepts
[![NPM Version][npm-image]][npm-url]
[![NPM Downloads][downloads-image]][downloads-url]
[![Node.js Version][node-version-image]][node-version-url]
[![Build Status][travis-image]][travis-url]
[![Test Coverage][coveralls-image]][coveralls-url]
Higher level content negotiation based on [negotiator](https://www.npmjs.com/package/negotiator).
Extracted from [koa](https://www.npmjs.com/package/koa) for general use.
In addition to negotiator, it allows:
- Allows types as an array or arguments list, ie `(['text/html', 'application/json'])`
as well as `('text/html', 'application/json')`.
- Allows type shorthands such as `json`.
- Returns `false` when no types match
- Treats non-existent headers as `*`
## Installation
This is a [Node.js](https://nodejs.org/en/) module available through the
[npm registry](https://www.npmjs.com/). Installation is done using the
[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
```sh
$ npm install accepts
```
## API
<!-- eslint-disable no-unused-vars -->
```js
var accepts = require('accepts')
```
### accepts(req)
Create a new `Accepts` object for the given `req`.
#### .charset(charsets)
Return the first accepted charset. If nothing in `charsets` is accepted,
then `false` is returned.
#### .charsets()
Return the charsets that the request accepts, in the order of the client's
preference (most preferred first).
#### .encoding(encodings)
Return the first accepted encoding. If nothing in `encodings` is accepted,
then `false` is returned.
#### .encodings()
Return the encodings that the request accepts, in the order of the client's
preference (most preferred first).
#### .language(languages)
Return the first accepted language. If nothing in `languages` is accepted,
then `false` is returned.
#### .languages()
Return the languages that the request accepts, in the order of the client's
preference (most preferred first).
#### .type(types)
Return the first accepted type (and it is returned as the same text as what
appears in the `types` array). If nothing in `types` is accepted, then `false`
is returned.
The `types` array can contain full MIME types or file extensions. Any value
that is not a full MIME types is passed to `require('mime-types').lookup`.
#### .types()
Return the types that the request accepts, in the order of the client's
preference (most preferred first).
## Examples
### Simple type negotiation
This simple example shows how to use `accepts` to return a different typed
respond body based on what the client wants to accept. The server lists it's
preferences in order and will get back the best match between the client and
server.
```js
var accepts = require('accepts')
var http = require('http')
function app (req, res) {
var accept = accepts(req)
// the order of this list is significant; should be server preferred order
switch (accept.type(['json', 'html'])) {
case 'json':
res.setHeader('Content-Type', 'application/json')
res.write('{"hello":"world!"}')
break
case 'html':
res.setHeader('Content-Type', 'text/html')
res.write('<b>hello, world!</b>')
break
default:
// the fallback is text/plain, so no need to specify it above
res.setHeader('Content-Type', 'text/plain')
res.write('hello, world!')
break
}
res.end()
}
http.createServer(app).listen(3000)
```
You can test this out with the cURL program:
```sh
curl -I -H'Accept: text/html' http://localhost:3000/
```
## License
[MIT](LICENSE)
[npm-image]: https://img.shields.io/npm/v/accepts.svg
[npm-url]: https://npmjs.org/package/accepts
[node-version-image]: https://img.shields.io/node/v/accepts.svg
[node-version-url]: https://nodejs.org/en/download/
[travis-image]: https://img.shields.io/travis/jshttp/accepts/master.svg
[travis-url]: https://travis-ci.org/jshttp/accepts
[coveralls-image]: https://img.shields.io/coveralls/jshttp/accepts/master.svg
[coveralls-url]: https://coveralls.io/r/jshttp/accepts
[downloads-image]: https://img.shields.io/npm/dm/accepts.svg
[downloads-url]: https://npmjs.org/package/accepts

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/*!
* accepts
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
/**
* Module dependencies.
* @private
*/
var Negotiator = require('negotiator')
var mime = require('mime-types')
/**
* Module exports.
* @public
*/
module.exports = Accepts
/**
* Create a new Accepts object for the given req.
*
* @param {object} req
* @public
*/
function Accepts (req) {
if (!(this instanceof Accepts)) {
return new Accepts(req)
}
this.headers = req.headers
this.negotiator = new Negotiator(req)
}
/**
* Check if the given `type(s)` is acceptable, returning
* the best match when true, otherwise `undefined`, in which
* case you should respond with 406 "Not Acceptable".
*
* The `type` value may be a single mime type string
* such as "application/json", the extension name
* such as "json" or an array `["json", "html", "text/plain"]`. When a list
* or array is given the _best_ match, if any is returned.
*
* Examples:
*
* // Accept: text/html
* this.types('html');
* // => "html"
*
* // Accept: text/*, application/json
* this.types('html');
* // => "html"
* this.types('text/html');
* // => "text/html"
* this.types('json', 'text');
* // => "json"
* this.types('application/json');
* // => "application/json"
*
* // Accept: text/*, application/json
* this.types('image/png');
* this.types('png');
* // => undefined
*
* // Accept: text/*;q=.5, application/json
* this.types(['html', 'json']);
* this.types('html', 'json');
* // => "json"
*
* @param {String|Array} types...
* @return {String|Array|Boolean}
* @public
*/
Accepts.prototype.type =
Accepts.prototype.types = function (types_) {
var types = types_
// support flattened arguments
if (types && !Array.isArray(types)) {
types = new Array(arguments.length)
for (var i = 0; i < types.length; i++) {
types[i] = arguments[i]
}
}
// no types, return all requested types
if (!types || types.length === 0) {
return this.negotiator.mediaTypes()
}
// no accept header, return first given type
if (!this.headers.accept) {
return types[0]
}
var mimes = types.map(extToMime)
var accepts = this.negotiator.mediaTypes(mimes.filter(validMime))
var first = accepts[0]
return first
? types[mimes.indexOf(first)]
: false
}
/**
* Return accepted encodings or best fit based on `encodings`.
*
* Given `Accept-Encoding: gzip, deflate`
* an array sorted by quality is returned:
*
* ['gzip', 'deflate']
*
* @param {String|Array} encodings...
* @return {String|Array}
* @public
*/
Accepts.prototype.encoding =
Accepts.prototype.encodings = function (encodings_) {
var encodings = encodings_
// support flattened arguments
if (encodings && !Array.isArray(encodings)) {
encodings = new Array(arguments.length)
for (var i = 0; i < encodings.length; i++) {
encodings[i] = arguments[i]
}
}
// no encodings, return all requested encodings
if (!encodings || encodings.length === 0) {
return this.negotiator.encodings()
}
return this.negotiator.encodings(encodings)[0] || false
}
/**
* Return accepted charsets or best fit based on `charsets`.
*
* Given `Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5`
* an array sorted by quality is returned:
*
* ['utf-8', 'utf-7', 'iso-8859-1']
*
* @param {String|Array} charsets...
* @return {String|Array}
* @public
*/
Accepts.prototype.charset =
Accepts.prototype.charsets = function (charsets_) {
var charsets = charsets_
// support flattened arguments
if (charsets && !Array.isArray(charsets)) {
charsets = new Array(arguments.length)
for (var i = 0; i < charsets.length; i++) {
charsets[i] = arguments[i]
}
}
// no charsets, return all requested charsets
if (!charsets || charsets.length === 0) {
return this.negotiator.charsets()
}
return this.negotiator.charsets(charsets)[0] || false
}
/**
* Return accepted languages or best fit based on `langs`.
*
* Given `Accept-Language: en;q=0.8, es, pt`
* an array sorted by quality is returned:
*
* ['es', 'pt', 'en']
*
* @param {String|Array} langs...
* @return {Array|String}
* @public
*/
Accepts.prototype.lang =
Accepts.prototype.langs =
Accepts.prototype.language =
Accepts.prototype.languages = function (languages_) {
var languages = languages_
// support flattened arguments
if (languages && !Array.isArray(languages)) {
languages = new Array(arguments.length)
for (var i = 0; i < languages.length; i++) {
languages[i] = arguments[i]
}
}
// no languages, return all requested languages
if (!languages || languages.length === 0) {
return this.negotiator.languages()
}
return this.negotiator.languages(languages)[0] || false
}
/**
* Convert extnames to mime.
*
* @param {String} type
* @return {String}
* @private
*/
function extToMime (type) {
return type.indexOf('/') === -1
? mime.lookup(type)
: type
}
/**
* Check if mime is valid.
*
* @param {String} type
* @return {String}
* @private
*/
function validMime (type) {
return typeof type === 'string'
}

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@ -1,114 +0,0 @@
{
"_args": [
[
"accepts@~1.3.4",
"/home/wso2/projects/wso2/iot/chathura/device-mgt/carbon-device-mgt/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.ui/src/main/resources/publisher/node_modules/compression"
]
],
"_from": "accepts@>=1.3.4 <1.4.0",
"_id": "accepts@1.3.4",
"_inCache": true,
"_installable": true,
"_location": "/accepts",
"_nodeVersion": "6.11.1",
"_npmOperationalInternal": {
"host": "s3://npm-registry-packages",
"tmp": "tmp/accepts-1.3.4.tgz_1503455053008_0.43370609171688557"
},
"_npmUser": {
"email": "doug@somethingdoug.com",
"name": "dougwilson"
},
"_npmVersion": "3.10.10",
"_phantomChildren": {},
"_requested": {
"name": "accepts",
"raw": "accepts@~1.3.4",
"rawSpec": "~1.3.4",
"scope": null,
"spec": ">=1.3.4 <1.4.0",
"type": "range"
},
"_requiredBy": [
"/compression",
"/express",
"/serve-index"
],
"_resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.4.tgz",
"_shasum": "86246758c7dd6d21a6474ff084a4740ec05eb21f",
"_shrinkwrap": null,
"_spec": "accepts@~1.3.4",
"_where": "/home/wso2/projects/wso2/iot/chathura/device-mgt/carbon-device-mgt/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.ui/src/main/resources/publisher/node_modules/compression",
"bugs": {
"url": "https://github.com/jshttp/accepts/issues"
},
"contributors": [
{
"name": "Douglas Christopher Wilson",
"email": "doug@somethingdoug.com"
},
{
"name": "Jonathan Ong",
"email": "me@jongleberry.com",
"url": "http://jongleberry.com"
}
],
"dependencies": {
"mime-types": "~2.1.16",
"negotiator": "0.6.1"
},
"description": "Higher-level content negotiation",
"devDependencies": {
"eslint": "3.19.0",
"eslint-config-standard": "10.2.1",
"eslint-plugin-import": "2.7.0",
"eslint-plugin-markdown": "1.0.0-beta.6",
"eslint-plugin-node": "5.1.1",
"eslint-plugin-promise": "3.5.0",
"eslint-plugin-standard": "3.0.1",
"istanbul": "0.4.5",
"mocha": "~1.21.5"
},
"directories": {},
"dist": {
"shasum": "86246758c7dd6d21a6474ff084a4740ec05eb21f",
"tarball": "https://registry.npmjs.org/accepts/-/accepts-1.3.4.tgz"
},
"engines": {
"node": ">= 0.6"
},
"files": [
"HISTORY.md",
"LICENSE",
"index.js"
],
"gitHead": "71ea430741d6eb5484b6c67c95924540a98186a5",
"homepage": "https://github.com/jshttp/accepts#readme",
"keywords": [
"accept",
"accepts",
"content",
"negotiation"
],
"license": "MIT",
"maintainers": [
{
"name": "dougwilson",
"email": "doug@somethingdoug.com"
}
],
"name": "accepts",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "git+https://github.com/jshttp/accepts.git"
},
"scripts": {
"lint": "eslint --plugin markdown --ext js,md .",
"test": "mocha --reporter spec --check-leaks --bail test/",
"test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot --check-leaks test/",
"test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter spec --check-leaks test/"
},
"version": "1.3.4"
}

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@ -1,19 +0,0 @@
# 2.0.2
- Fixing parsing of `yield import()`.
# 2.0.1
- Removing unnecessary `in-publish` dependency.
# 2.0.0
- Updating acorn version to >= 4.
# 1.0.1
- Fixes for publishing the module.
# 1.0.0
- Initial release of plugin.

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@ -1,21 +0,0 @@
MIT License
Copyright (c) 2016 Jordan Gensler
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.

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@ -1,33 +0,0 @@
# Dynamic import support in acorn
This is plugin for [Acorn](http://marijnhaverbeke.nl/acorn/) - a tiny, fast JavaScript parser, written completely in JavaScript.
For more information, check out the [proposal repo](https://github.com/tc39/proposal-dynamic-import).
## Usage
You can use this module directly in order to get Acorn instance with plugin installed:
```js
import acorn from 'acorn-dynamic-import';
// or...
const acorn = require('acorn-dynamic-import').default;
```
Or you can use `inject.js` for injecting plugin into your own version of Acorn like this:
```js
const acorn = require('acorn-dynamic-import/lib/inject').default(require('./custom-acorn'));
```
Then, use the `plugins` option whenever you need to support dynamicImport while parsing:
```js
const ast = acorn.parse(code, {
plugins: { dynamicImport: true }
});
```
## License
This plugin is issued under the [MIT license](./LICENSE).

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@ -1,17 +0,0 @@
Object.defineProperty(exports, "__esModule", {
value: true
});
var _acorn = require('acorn');
var acorn = _interopRequireWildcard(_acorn);
var _inject = require('./inject');
var _inject2 = _interopRequireDefault(_inject);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj['default'] = obj; return newObj; } }
exports['default'] = (0, _inject2['default'])(acorn);

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Object.defineProperty(exports, "__esModule", {
value: true
});
exports['default'] = injectDynamicImport;
/* eslint-disable no-underscore-dangle */
function injectDynamicImport(acorn) {
var tt = acorn.tokTypes;
// NOTE: This allows `yield import()` to parse correctly.
tt._import.startsExpr = true;
function parseDynamicImport() {
var node = this.startNode();
this.next();
if (this.type !== tt.parenL) {
this.unexpected();
}
return this.finishNode(node, 'Import');
}
function peekNext() {
return this.input[this.pos];
}
// eslint-disable-next-line no-param-reassign
acorn.plugins.dynamicImport = function () {
function dynamicImportPlugin(instance) {
instance.extend('parseStatement', function (nextMethod) {
return function () {
function parseStatement() {
var node = this.startNode();
if (this.type === tt._import) {
var nextToken = peekNext.call(this);
if (nextToken === tt.parenL.label) {
var expr = this.parseExpression();
return this.parseExpressionStatement(node, expr);
}
}
for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
return nextMethod.apply(this, args);
}
return parseStatement;
}();
});
instance.extend('parseExprAtom', function (nextMethod) {
return function () {
function parseExprAtom(refDestructuringErrors) {
if (this.type === tt._import) {
return parseDynamicImport.call(this);
}
return nextMethod.call(this, refDestructuringErrors);
}
return parseExprAtom;
}();
});
}
return dynamicImportPlugin;
}();
return acorn;
}

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@ -1,10 +0,0 @@
/.tern-port
/test
/local
/rollup
/bin/generate-identifier-regex.js
/bin/update_authors.sh
.editorconfig
.gitattributes
.tern-project
.travis.yml

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@ -1,62 +0,0 @@
List of Acorn contributors. Updated before every release.
Adrian Rakovsky
Alistair Braidwood
Amila Welihinda
Andres Suarez
Angelo
Aparajita Fishman
Arian Stolwijk
Artem Govorov
Brandon Mills
Charles Hughes
Conrad Irwin
Daniel Tschinder
David Bonnet
Domenico Matteo
Forbes Lindesay
Gilad Peleg
impinball
Ingvar Stepanyan
Jackson Ray Hamilton
Jesse McCarthy
Jiaxing Wang
Joel Kemp
Johannes Herr
Jordan Klassen
Jürg Lehni
Kai Cataldo
keeyipchan
Keheliya Gallaba
Kevin Irish
Kevin Kwok
krator
Marijn Haverbeke
Martin Carlberg
Mat Garcia
Mathias Bynens
Mathieu 'p01' Henri
Matthew Bastien
Max Schaefer
Max Zerzouri
Mihai Bazon
Mike Rennie
naoh
Nicholas C. Zakas
Nick Fitzgerald
Olivier Thomann
Oskar Schöldström
Paul Harper
Peter Rust
PlNG
Prayag Verma
ReadmeCritic
r-e-d
Richard Gibson
Rich Harris
Sebastian McKenzie
Simen Bekkhus
Timothy Gu
Toru Nagashima
Wexpo Lyu
zsjforcn

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@ -1,286 +0,0 @@
## 4.0.11 (2017-02-07)
### Bug fixes
Allow all forms of member expressions to be parenthesized as lvalue.
## 4.0.10 (2017-02-07)
### Bug fixes
Don't expect semicolons after default-exported functions or classes,
even when they are expressions.
Check for use of `'use strict'` directives in non-simple parameter
functions, even when already in strict mode.
## 4.0.9 (2017-02-06)
### Bug fixes
Fix incorrect error raised for parenthesized simple assignment
targets, so that `(x) = 1` parses again.
## 4.0.8 (2017-02-03)
### Bug fixes
Solve spurious parenthesized pattern errors by temporarily erring on
the side of accepting programs that our delayed errors don't handle
correctly yet.
## 4.0.7 (2017-02-02)
### Bug fixes
Accept invalidly rejected code like `(x).y = 2` again.
Don't raise an error when a function _inside_ strict code has a
non-simple parameter list.
## 4.0.6 (2017-02-02)
### Bug fixes
Fix exponential behavior (manifesting itself as a complete hang for
even relatively small source files) introduced by the new 'use strict'
check.
## 4.0.5 (2017-02-02)
### Bug fixes
Disallow parenthesized pattern expressions.
Allow keywords as export names.
Don't allow the `async` keyword to be parenthesized.
Properly raise an error when a keyword contains a character escape.
Allow `"use strict"` to appear after other string literal expressions.
Disallow labeled declarations.
## 4.0.4 (2016-12-19)
### Bug fixes
Fix issue with loading acorn_loose.js with an AMD loader.
Fix crash when `export` was followed by a keyword that can't be
exported.
## 4.0.3 (2016-08-16)
### Bug fixes
Allow regular function declarations inside single-statement `if`
branches in loose mode. Forbid them entirely in strict mode.
Properly parse properties named `async` in ES2017 mode.
Fix bug where reserved words were broken in ES2017 mode.
## 4.0.2 (2016-08-11)
### Bug fixes
Don't ignore period or 'e' characters after octal numbers.
Fix broken parsing for call expressions in default parameter values
of arrow functions.
## 4.0.1 (2016-08-08)
### Bug fixes
Fix false positives in duplicated export name errors.
## 4.0.0 (2016-08-07)
### Breaking changes
The default `ecmaVersion` option value is now 7.
A number of internal method signatures changed, so plugins might need
to be updated.
### Bug fixes
The parser now raises errors on duplicated export names.
`arguments` and `eval` can now be used in shorthand properties.
Duplicate parameter names in non-simple argument lists now always
produce an error.
### New features
The `ecmaVersion` option now also accepts year-style version numbers
(2015, etc).
Support for `async`/`await` syntax when `ecmaVersion` is >= 8.
Support for trailing commas in call expressions when `ecmaVersion`
is >= 8.
## 3.3.0 (2016-07-25)
### Bug fixes
Fix bug in tokenizing of regexp operator after a function declaration.
Fix parser crash when parsing an array pattern with a hole.
### New features
Implement check against complex argument lists in functions that
enable strict mode in ES7.
## 3.2.0 (2016-06-07)
### Bug fixes
Improve handling of lack of unicode regexp support in host
environment.
Properly reject shorthand properties whose name is a keyword.
Don't crash when the loose parser is called without options object.
### New features
Visitors created with `visit.make` now have their base as _prototype_,
rather than copying properties into a fresh object.
Make it possible to use `visit.ancestor` with a walk state.
## 3.1.0 (2016-04-18)
### Bug fixes
Fix issue where the loose parser created invalid TemplateElement nodes
for unclosed template literals.
Properly tokenize the division operator directly after a function
expression.
Allow trailing comma in destructuring arrays.
### New features
The walker now allows defining handlers for `CatchClause` nodes.
## 3.0.4 (2016-02-25)
### Fixes
Allow update expressions as left-hand-side of the ES7 exponential
operator.
## 3.0.2 (2016-02-10)
### Fixes
Fix bug that accidentally made `undefined` a reserved word when
parsing ES7.
## 3.0.0 (2016-02-10)
### Breaking changes
The default value of the `ecmaVersion` option is now 6 (used to be 5).
Support for comprehension syntax (which was dropped from the draft
spec) has been removed.
### Fixes
`let` and `yield` are now “contextual keywords”, meaning you can
mostly use them as identifiers in ES5 non-strict code.
A parenthesized class or function expression after `export default` is
now parsed correctly.
### New features
When `ecmaVersion` is set to 7, Acorn will parse the exponentiation
operator (`**`).
The identifier character ranges are now based on Unicode 8.0.0.
Plugins can now override the `raiseRecoverable` method to override the
way non-critical errors are handled.
## 2.7.0 (2016-01-04)
### Fixes
Stop allowing rest parameters in setters.
Make sure the loose parser always attaches a `local` property to
`ImportNamespaceSpecifier` nodes.
Disallow `y` rexexp flag in ES5.
Disallow `\00` and `\000` escapes in strict mode.
Raise an error when an import name is a reserved word.
## 2.6.4 (2015-11-12)
### Fixes
Fix crash in loose parser when parsing invalid object pattern.
### New features
Support plugins in the loose parser.
## 2.6.2 (2015-11-10)
### Fixes
Don't crash when no options object is passed.
## 2.6.0 (2015-11-09)
### Fixes
Add `await` as a reserved word in module sources.
Disallow `yield` in a parameter default value for a generator.
Forbid using a comma after a rest pattern in an array destructuring.
### New features
Support parsing stdin in command-line tool.
## 2.5.2 (2015-10-27)
### Fixes
Fix bug where the walker walked an exported `let` statement as an
expression.
## 2.5.0 (2015-10-27)
### Fixes
Fix tokenizer support in the command-line tool.
In the loose parser, don't allow non-string-literals as import
sources.
Stop allowing `new.target` outside of functions.
Remove legacy `guard` and `guardedHandler` properties from try nodes.
Stop allowing multiple `__proto__` properties on an object literal in
strict mode.
Don't allow rest parameters to be non-identifier patterns.
Check for duplicate paramter names in arrow functions.

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@ -1,19 +0,0 @@
Copyright (C) 2012-2016 by various contributors (see AUTHORS)
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.

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@ -1,409 +0,0 @@
# Acorn
[![Build Status](https://travis-ci.org/ternjs/acorn.svg?branch=master)](https://travis-ci.org/ternjs/acorn)
[![NPM version](https://img.shields.io/npm/v/acorn.svg)](https://www.npmjs.com/package/acorn)
[![CDNJS](https://img.shields.io/cdnjs/v/acorn.svg)](https://cdnjs.com/libraries/acorn)
[Author funding status: ![maintainer happiness](https://marijnhaverbeke.nl/fund/status_s.png?force)](https://marijnhaverbeke.nl/fund/)
A tiny, fast JavaScript parser, written completely in JavaScript.
## Community
Acorn is open source software released under an
[MIT license](https://github.com/ternjs/acorn/blob/master/LICENSE).
You are welcome to
[report bugs](https://github.com/ternjs/acorn/issues) or create pull
requests on [github](https://github.com/ternjs/acorn). For questions
and discussion, please use the
[Tern discussion forum](https://discuss.ternjs.net).
## Installation
The easiest way to install acorn is with [`npm`][npm].
[npm]: https://www.npmjs.com/
```sh
npm install acorn
```
Alternately, download the source.
```sh
git clone https://github.com/ternjs/acorn.git
```
## Components
When run in a CommonJS (node.js) or AMD environment, exported values
appear in the interfaces exposed by the individual files, as usual.
When loaded in the browser (Acorn works in any JS-enabled browser more
recent than IE5) without any kind of module management, a single
global object `acorn` will be defined, and all the exported properties
will be added to that.
### Main parser
This is implemented in `dist/acorn.js`, and is what you get when you
`require("acorn")` in node.js.
**parse**`(input, options)` is used to parse a JavaScript program.
The `input` parameter is a string, `options` can be undefined or an
object setting some of the options listed below. The return value will
be an abstract syntax tree object as specified by the
[ESTree spec][estree].
When encountering a syntax error, the parser will raise a
`SyntaxError` object with a meaningful message. The error object will
have a `pos` property that indicates the character offset at which the
error occurred, and a `loc` object that contains a `{line, column}`
object referring to that same position.
[estree]: https://github.com/estree/estree
- **ecmaVersion**: Indicates the ECMAScript version to parse. Must be
either 3, 5, 6 (2015), 7 (2016), or 8 (2017). This influences support for strict
mode, the set of reserved words, and support for new syntax features.
Default is 7.
**NOTE**: Only 'stage 4' (finalized) ECMAScript features are being
implemented by Acorn.
- **sourceType**: Indicate the mode the code should be parsed in. Can be
either `"script"` or `"module"`. This influences global strict mode
and parsing of `import` and `export` declarations.
- **onInsertedSemicolon**: If given a callback, that callback will be
called whenever a missing semicolon is inserted by the parser. The
callback will be given the character offset of the point where the
semicolon is inserted as argument, and if `locations` is on, also a
`{line, column}` object representing this position.
- **onTrailingComma**: Like `onInsertedSemicolon`, but for trailing
commas.
- **allowReserved**: If `false`, using a reserved word will generate
an error. Defaults to `true` for `ecmaVersion` 3, `false` for higher
versions. When given the value `"never"`, reserved words and
keywords can also not be used as property names (as in Internet
Explorer's old parser).
- **allowReturnOutsideFunction**: By default, a return statement at
the top level raises an error. Set this to `true` to accept such
code.
- **allowImportExportEverywhere**: By default, `import` and `export`
declarations can only appear at a program's top level. Setting this
option to `true` allows them anywhere where a statement is allowed.
- **allowHashBang**: When this is enabled (off by default), if the
code starts with the characters `#!` (as in a shellscript), the
first line will be treated as a comment.
- **locations**: When `true`, each node has a `loc` object attached
with `start` and `end` subobjects, each of which contains the
one-based line and zero-based column numbers in `{line, column}`
form. Default is `false`.
- **onToken**: If a function is passed for this option, each found
token will be passed in same format as tokens returned from
`tokenizer().getToken()`.
If array is passed, each found token is pushed to it.
Note that you are not allowed to call the parser from the
callback—that will corrupt its internal state.
- **onComment**: If a function is passed for this option, whenever a
comment is encountered the function will be called with the
following parameters:
- `block`: `true` if the comment is a block comment, false if it
is a line comment.
- `text`: The content of the comment.
- `start`: Character offset of the start of the comment.
- `end`: Character offset of the end of the comment.
When the `locations` options is on, the `{line, column}` locations
of the comments start and end are passed as two additional
parameters.
If array is passed for this option, each found comment is pushed
to it as object in Esprima format:
```javascript
{
"type": "Line" | "Block",
"value": "comment text",
"start": Number,
"end": Number,
// If `locations` option is on:
"loc": {
"start": {line: Number, column: Number}
"end": {line: Number, column: Number}
},
// If `ranges` option is on:
"range": [Number, Number]
}
```
Note that you are not allowed to call the parser from the
callback—that will corrupt its internal state.
- **ranges**: Nodes have their start and end characters offsets
recorded in `start` and `end` properties (directly on the node,
rather than the `loc` object, which holds line/column data. To also
add a [semi-standardized][range] `range` property holding a
`[start, end]` array with the same numbers, set the `ranges` option
to `true`.
- **program**: It is possible to parse multiple files into a single
AST by passing the tree produced by parsing the first file as the
`program` option in subsequent parses. This will add the toplevel
forms of the parsed file to the "Program" (top) node of an existing
parse tree.
- **sourceFile**: When the `locations` option is `true`, you can pass
this option to add a `source` attribute in every nodes `loc`
object. Note that the contents of this option are not examined or
processed in any way; you are free to use whatever format you
choose.
- **directSourceFile**: Like `sourceFile`, but a `sourceFile` property
will be added (regardless of the `location` option) directly to the
nodes, rather than the `loc` object.
- **preserveParens**: If this option is `true`, parenthesized expressions
are represented by (non-standard) `ParenthesizedExpression` nodes
that have a single `expression` property containing the expression
inside parentheses.
[range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
**parseExpressionAt**`(input, offset, options)` will parse a single
expression in a string, and return its AST. It will not complain if
there is more of the string left after the expression.
**getLineInfo**`(input, offset)` can be used to get a `{line,
column}` object for a given program string and character offset.
**tokenizer**`(input, options)` returns an object with a `getToken`
method that can be called repeatedly to get the next token, a `{start,
end, type, value}` object (with added `loc` property when the
`locations` option is enabled and `range` property when the `ranges`
option is enabled). When the token's type is `tokTypes.eof`, you
should stop calling the method, since it will keep returning that same
token forever.
In ES6 environment, returned result can be used as any other
protocol-compliant iterable:
```javascript
for (let token of acorn.tokenizer(str)) {
// iterate over the tokens
}
// transform code to array of tokens:
var tokens = [...acorn.tokenizer(str)];
```
**tokTypes** holds an object mapping names to the token type objects
that end up in the `type` properties of tokens.
#### Note on using with [Escodegen][escodegen]
Escodegen supports generating comments from AST, attached in
Esprima-specific format. In order to simulate same format in
Acorn, consider following example:
```javascript
var comments = [], tokens = [];
var ast = acorn.parse('var x = 42; // answer', {
// collect ranges for each node
ranges: true,
// collect comments in Esprima's format
onComment: comments,
// collect token ranges
onToken: tokens
});
// attach comments using collected information
escodegen.attachComments(ast, comments, tokens);
// generate code
console.log(escodegen.generate(ast, {comment: true}));
// > 'var x = 42; // answer'
```
[escodegen]: https://github.com/estools/escodegen
### dist/acorn_loose.js ###
This file implements an error-tolerant parser. It exposes a single
function. The loose parser is accessible in node.js via `require("acorn/dist/acorn_loose")`.
**parse_dammit**`(input, options)` takes the same arguments and
returns the same syntax tree as the `parse` function in `acorn.js`,
but never raises an error, and will do its best to parse syntactically
invalid code in as meaningful a way as it can. It'll insert identifier
nodes with name `"✖"` as placeholders in places where it can't make
sense of the input. Depends on `acorn.js`, because it uses the same
tokenizer.
### dist/walk.js ###
Implements an abstract syntax tree walker. Will store its interface in
`acorn.walk` when loaded without a module system.
**simple**`(node, visitors, base, state)` does a 'simple' walk over
a tree. `node` should be the AST node to walk, and `visitors` an
object with properties whose names correspond to node types in the
[ESTree spec][estree]. The properties should contain functions
that will be called with the node object and, if applicable the state
at that point. The last two arguments are optional. `base` is a walker
algorithm, and `state` is a start state. The default walker will
simply visit all statements and expressions and not produce a
meaningful state. (An example of a use of state is to track scope at
each point in the tree.)
**ancestor**`(node, visitors, base, state)` does a 'simple' walk over
a tree, building up an array of ancestor nodes (including the current node)
and passing the array to the callbacks as a third parameter.
**recursive**`(node, state, functions, base)` does a 'recursive'
walk, where the walker functions are responsible for continuing the
walk on the child nodes of their target node. `state` is the start
state, and `functions` should contain an object that maps node types
to walker functions. Such functions are called with `(node, state, c)`
arguments, and can cause the walk to continue on a sub-node by calling
the `c` argument on it with `(node, state)` arguments. The optional
`base` argument provides the fallback walker functions for node types
that aren't handled in the `functions` object. If not given, the
default walkers will be used.
**make**`(functions, base)` builds a new walker object by using the
walker functions in `functions` and filling in the missing ones by
taking defaults from `base`.
**findNodeAt**`(node, start, end, test, base, state)` tries to
locate a node in a tree at the given start and/or end offsets, which
satisfies the predicate `test`. `start` and `end` can be either `null`
(as wildcard) or a number. `test` may be a string (indicating a node
type) or a function that takes `(nodeType, node)` arguments and
returns a boolean indicating whether this node is interesting. `base`
and `state` are optional, and can be used to specify a custom walker.
Nodes are tested from inner to outer, so if two nodes match the
boundaries, the inner one will be preferred.
**findNodeAround**`(node, pos, test, base, state)` is a lot like
`findNodeAt`, but will match any node that exists 'around' (spanning)
the given position.
**findNodeAfter**`(node, pos, test, base, state)` is similar to
`findNodeAround`, but will match all nodes *after* the given position
(testing outer nodes before inner nodes).
## Command line interface
The `bin/acorn` utility can be used to parse a file from the command
line. It accepts as arguments its input file and the following
options:
- `--ecma3|--ecma5|--ecma6|--ecma7`: Sets the ECMAScript version to parse. Default is
version 5.
- `--module`: Sets the parsing mode to `"module"`. Is set to `"script"` otherwise.
- `--locations`: Attaches a "loc" object to each node with "start" and
"end" subobjects, each of which contains the one-based line and
zero-based column numbers in `{line, column}` form.
- `--allow-hash-bang`: If the code starts with the characters #! (as in a shellscript), the first line will be treated as a comment.
- `--compact`: No whitespace is used in the AST output.
- `--silent`: Do not output the AST, just return the exit status.
- `--help`: Print the usage information and quit.
The utility spits out the syntax tree as JSON data.
## Build system
Acorn is written in ECMAScript 6, as a set of small modules, in the
project's `src` directory, and compiled down to bigger ECMAScript 3
files in `dist` using [Browserify](http://browserify.org) and
[Babel](http://babeljs.io/). If you are already using Babel, you can
consider including the modules directly.
The command-line test runner (`npm test`) uses the ES6 modules. The
browser-based test page (`test/index.html`) uses the compiled modules.
The `bin/build-acorn.js` script builds the latter from the former.
If you are working on Acorn, you'll probably want to try the code out
directly, without an intermediate build step. In your scripts, you can
register the Babel require shim like this:
require("babel-core/register")
That will allow you to directly `require` the ES6 modules.
## Plugins
Acorn is designed support allow plugins which, within reasonable
bounds, redefine the way the parser works. Plugins can add new token
types and new tokenizer contexts (if necessary), and extend methods in
the parser object. This is not a clean, elegant API—using it requires
an understanding of Acorn's internals, and plugins are likely to break
whenever those internals are significantly changed. But still, it is
_possible_, in this way, to create parsers for JavaScript dialects
without forking all of Acorn. And in principle it is even possible to
combine such plugins, so that if you have, for example, a plugin for
parsing types and a plugin for parsing JSX-style XML literals, you
could load them both and parse code with both JSX tags and types.
A plugin should register itself by adding a property to
`acorn.plugins`, which holds a function. Calling `acorn.parse`, a
`plugins` option can be passed, holding an object mapping plugin names
to configuration values (or just `true` for plugins that don't take
options). After the parser object has been created, the initialization
functions for the chosen plugins are called with `(parser,
configValue)` arguments. They are expected to use the `parser.extend`
method to extend parser methods. For example, the `readToken` method
could be extended like this:
```javascript
parser.extend("readToken", function(nextMethod) {
return function(code) {
console.log("Reading a token!")
return nextMethod.call(this, code)
}
})
```
The `nextMethod` argument passed to `extend`'s second argument is the
previous value of this method, and should usually be called through to
whenever the extended method does not handle the call itself.
Similarly, the loose parser allows plugins to register themselves via
`acorn.pluginsLoose`. The extension mechanism is the same as for the
normal parser:
```javascript
looseParser.extend("readToken", function(nextMethod) {
return function() {
console.log("Reading a token in the loose parser!")
return nextMethod.call(this)
}
})
```
### Existing plugins
- [`acorn-jsx`](https://github.com/RReverser/acorn-jsx): Parse [Facebook JSX syntax extensions](https://github.com/facebook/jsx)
- [`acorn-es7-plugin`](https://github.com/MatAtBread/acorn-es7-plugin/): Parse [async/await syntax proposal](https://github.com/tc39/ecmascript-asyncawait)
- [`acorn-object-spread`](https://github.com/UXtemple/acorn-object-spread): Parse [object spread syntax proposal](https://github.com/sebmarkbage/ecmascript-rest-spread)
- [`acorn-es7`](https://www.npmjs.com/package/acorn-es7): Parse [decorator syntax proposal](https://github.com/wycats/javascript-decorators)
- [`acorn-objj`](https://www.npmjs.com/package/acorn-objj): [Objective-J](http://www.cappuccino-project.org/learn/objective-j.html) language parser built as Acorn plugin

View File

@ -1,67 +0,0 @@
#!/usr/bin/env node
'use strict';
var path = require('path');
var fs = require('fs');
var acorn = require('../dist/acorn.js');
var infile;
var forceFile;
var silent = false;
var compact = false;
var tokenize = false;
var options = {}
function help(status) {
var print = (status == 0) ? console.log : console.error
print("usage: " + path.basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6|--ecma7|...|--ecma2015|--ecma2016|...]")
print(" [--tokenize] [--locations] [---allow-hash-bang] [--compact] [--silent] [--module] [--help] [--] [infile]")
process.exit(status)
}
for (var i = 2; i < process.argv.length; ++i) {
var arg = process.argv[i]
if ((arg == "-" || arg[0] != "-") && !infile) infile = arg
else if (arg == "--" && !infile && i + 2 == process.argv.length) forceFile = infile = process.argv[++i]
else if (arg == "--locations") options.locations = true
else if (arg == "--allow-hash-bang") options.allowHashBang = true
else if (arg == "--silent") silent = true
else if (arg == "--compact") compact = true
else if (arg == "--help") help(0)
else if (arg == "--tokenize") tokenize = true
else if (arg == "--module") options.sourceType = 'module'
else {
var match = arg.match(/^--ecma(\d+)$/)
if (match)
options.ecmaVersion = +match[1]
else
help(1)
}
}
function run(code) {
var result
if (!tokenize) {
try { result = acorn.parse(code, options) }
catch(e) { console.error(e.message); process.exit(1) }
} else {
result = []
var tokenizer = acorn.tokenizer(code, options), token
while (true) {
try { token = tokenizer.getToken() }
catch(e) { console.error(e.message); process.exit(1) }
result.push(token)
if (token.type == acorn.tokTypes.eof) break
}
}
if (!silent) console.log(JSON.stringify(result, null, compact ? null : 2))
}
if (forceFile || infile && infile != "-") {
run(fs.readFileSync(infile, "utf8"))
} else {
var code = ""
process.stdin.resume()
process.stdin.on("data", function (chunk) { return code += chunk; })
process.stdin.on("end", function () { return run(code); })
}

View File

@ -1,342 +0,0 @@
// AST walker module for Mozilla Parser API compatible trees
// A simple walk is one where you simply specify callbacks to be
// called on specific nodes. The last two arguments are optional. A
// simple use would be
//
// walk.simple(myTree, {
// Expression: function(node) { ... }
// });
//
// to do something with all expressions. All Parser API node types
// can be used to identify node types, as well as Expression,
// Statement, and ScopeBody, which denote categories of nodes.
//
// The base argument can be used to pass a custom (recursive)
// walker, and state can be used to give this walked an initial
// state.
function simple(node, visitors, base, state, override) {
if (!base) base = exports.base
;(function c(node, st, override) {
var type = override || node.type, found = visitors[type]
base[type](node, st, c)
if (found) found(node, st)
})(node, state, override)
}
// An ancestor walk keeps an array of ancestor nodes (including the
// current node) and passes them to the callback as third parameter
// (and also as state parameter when no other state is present).
function ancestor(node, visitors, base, state) {
if (!base) base = exports.base
var ancestors = []
;(function c(node, st, override) {
var type = override || node.type, found = visitors[type]
var isNew = node != ancestors[ancestors.length - 1]
if (isNew) ancestors.push(node)
base[type](node, st, c)
if (found) found(node, st || ancestors, ancestors)
if (isNew) ancestors.pop()
})(node, state)
}
// A recursive walk is one where your functions override the default
// walkers. They can modify and replace the state parameter that's
// threaded through the walk, and can opt how and whether to walk
// their child nodes (by calling their third argument on these
// nodes).
function recursive(node, state, funcs, base, override) {
var visitor = funcs ? exports.make(funcs, base) : base
;(function c(node, st, override) {
visitor[override || node.type](node, st, c)
})(node, state, override)
}
function makeTest(test) {
if (typeof test == "string")
return function (type) { return type == test; }
else if (!test)
return function () { return true; }
else
return test
}
var Found = function Found(node, state) { this.node = node; this.state = state };
// Find a node with a given start, end, and type (all are optional,
// null can be used as wildcard). Returns a {node, state} object, or
// undefined when it doesn't find a matching node.
function findNodeAt(node, start, end, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
try {
;(function c(node, st, override) {
var type = override || node.type
if ((start == null || node.start <= start) &&
(end == null || node.end >= end))
base[type](node, st, c)
if ((start == null || node.start == start) &&
(end == null || node.end == end) &&
test(type, node))
throw new Found(node, st)
})(node, state)
} catch (e) {
if (e instanceof Found) return e
throw e
}
}
// Find the innermost node of a given type that contains the given
// position. Interface similar to findNodeAt.
function findNodeAround(node, pos, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
try {
;(function c(node, st, override) {
var type = override || node.type
if (node.start > pos || node.end < pos) return
base[type](node, st, c)
if (test(type, node)) throw new Found(node, st)
})(node, state)
} catch (e) {
if (e instanceof Found) return e
throw e
}
}
// Find the outermost matching node after a given position.
function findNodeAfter(node, pos, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
try {
;(function c(node, st, override) {
if (node.end < pos) return
var type = override || node.type
if (node.start >= pos && test(type, node)) throw new Found(node, st)
base[type](node, st, c)
})(node, state)
} catch (e) {
if (e instanceof Found) return e
throw e
}
}
// Find the outermost matching node before a given position.
function findNodeBefore(node, pos, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
var max
;(function c(node, st, override) {
if (node.start > pos) return
var type = override || node.type
if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node))
max = new Found(node, st)
base[type](node, st, c)
})(node, state)
return max
}
// Fallback to an Object.create polyfill for older environments.
var create = Object.create || function(proto) {
function Ctor() {}
Ctor.prototype = proto
return new Ctor
}
// Used to create a custom walker. Will fill in all missing node
// type properties with the defaults.
function make(funcs, base) {
if (!base) base = exports.base
var visitor = create(base)
for (var type in funcs) visitor[type] = funcs[type]
return visitor
}
function skipThrough(node, st, c) { c(node, st) }
function ignore(_node, _st, _c) {}
// Node walkers.
var base = {}
base.Program = base.BlockStatement = function (node, st, c) {
for (var i = 0; i < node.body.length; ++i)
c(node.body[i], st, "Statement")
}
base.Statement = skipThrough
base.EmptyStatement = ignore
base.ExpressionStatement = base.ParenthesizedExpression =
function (node, st, c) { return c(node.expression, st, "Expression"); }
base.IfStatement = function (node, st, c) {
c(node.test, st, "Expression")
c(node.consequent, st, "Statement")
if (node.alternate) c(node.alternate, st, "Statement")
}
base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); }
base.BreakStatement = base.ContinueStatement = ignore
base.WithStatement = function (node, st, c) {
c(node.object, st, "Expression")
c(node.body, st, "Statement")
}
base.SwitchStatement = function (node, st, c) {
c(node.discriminant, st, "Expression")
for (var i = 0; i < node.cases.length; ++i) {
var cs = node.cases[i]
if (cs.test) c(cs.test, st, "Expression")
for (var j = 0; j < cs.consequent.length; ++j)
c(cs.consequent[j], st, "Statement")
}
}
base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) {
if (node.argument) c(node.argument, st, "Expression")
}
base.ThrowStatement = base.SpreadElement =
function (node, st, c) { return c(node.argument, st, "Expression"); }
base.TryStatement = function (node, st, c) {
c(node.block, st, "Statement")
if (node.handler) c(node.handler, st)
if (node.finalizer) c(node.finalizer, st, "Statement")
}
base.CatchClause = function (node, st, c) {
c(node.param, st, "Pattern")
c(node.body, st, "ScopeBody")
}
base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
c(node.test, st, "Expression")
c(node.body, st, "Statement")
}
base.ForStatement = function (node, st, c) {
if (node.init) c(node.init, st, "ForInit")
if (node.test) c(node.test, st, "Expression")
if (node.update) c(node.update, st, "Expression")
c(node.body, st, "Statement")
}
base.ForInStatement = base.ForOfStatement = function (node, st, c) {
c(node.left, st, "ForInit")
c(node.right, st, "Expression")
c(node.body, st, "Statement")
}
base.ForInit = function (node, st, c) {
if (node.type == "VariableDeclaration") c(node, st)
else c(node, st, "Expression")
}
base.DebuggerStatement = ignore
base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); }
base.VariableDeclaration = function (node, st, c) {
for (var i = 0; i < node.declarations.length; ++i)
c(node.declarations[i], st)
}
base.VariableDeclarator = function (node, st, c) {
c(node.id, st, "Pattern")
if (node.init) c(node.init, st, "Expression")
}
base.Function = function (node, st, c) {
if (node.id) c(node.id, st, "Pattern")
for (var i = 0; i < node.params.length; i++)
c(node.params[i], st, "Pattern")
c(node.body, st, node.expression ? "ScopeExpression" : "ScopeBody")
}
// FIXME drop these node types in next major version
// (They are awkward, and in ES6 every block can be a scope.)
base.ScopeBody = function (node, st, c) { return c(node, st, "Statement"); }
base.ScopeExpression = function (node, st, c) { return c(node, st, "Expression"); }
base.Pattern = function (node, st, c) {
if (node.type == "Identifier")
c(node, st, "VariablePattern")
else if (node.type == "MemberExpression")
c(node, st, "MemberPattern")
else
c(node, st)
}
base.VariablePattern = ignore
base.MemberPattern = skipThrough
base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); }
base.ArrayPattern = function (node, st, c) {
for (var i = 0; i < node.elements.length; ++i) {
var elt = node.elements[i]
if (elt) c(elt, st, "Pattern")
}
}
base.ObjectPattern = function (node, st, c) {
for (var i = 0; i < node.properties.length; ++i)
c(node.properties[i].value, st, "Pattern")
}
base.Expression = skipThrough
base.ThisExpression = base.Super = base.MetaProperty = ignore
base.ArrayExpression = function (node, st, c) {
for (var i = 0; i < node.elements.length; ++i) {
var elt = node.elements[i]
if (elt) c(elt, st, "Expression")
}
}
base.ObjectExpression = function (node, st, c) {
for (var i = 0; i < node.properties.length; ++i)
c(node.properties[i], st)
}
base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration
base.SequenceExpression = base.TemplateLiteral = function (node, st, c) {
for (var i = 0; i < node.expressions.length; ++i)
c(node.expressions[i], st, "Expression")
}
base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
c(node.argument, st, "Expression")
}
base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
c(node.left, st, "Expression")
c(node.right, st, "Expression")
}
base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
c(node.left, st, "Pattern")
c(node.right, st, "Expression")
}
base.ConditionalExpression = function (node, st, c) {
c(node.test, st, "Expression")
c(node.consequent, st, "Expression")
c(node.alternate, st, "Expression")
}
base.NewExpression = base.CallExpression = function (node, st, c) {
c(node.callee, st, "Expression")
if (node.arguments) for (var i = 0; i < node.arguments.length; ++i)
c(node.arguments[i], st, "Expression")
}
base.MemberExpression = function (node, st, c) {
c(node.object, st, "Expression")
if (node.computed) c(node.property, st, "Expression")
}
base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
if (node.declaration)
c(node.declaration, st, node.type == "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression")
if (node.source) c(node.source, st, "Expression")
}
base.ExportAllDeclaration = function (node, st, c) {
c(node.source, st, "Expression")
}
base.ImportDeclaration = function (node, st, c) {
for (var i = 0; i < node.specifiers.length; i++)
c(node.specifiers[i], st)
c(node.source, st, "Expression")
}
base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore
base.TaggedTemplateExpression = function (node, st, c) {
c(node.tag, st, "Expression")
c(node.quasi, st)
}
base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); }
base.Class = function (node, st, c) {
if (node.id) c(node.id, st, "Pattern")
if (node.superClass) c(node.superClass, st, "Expression")
for (var i = 0; i < node.body.body.length; i++)
c(node.body.body[i], st)
}
base.MethodDefinition = base.Property = function (node, st, c) {
if (node.computed) c(node.key, st, "Expression")
c(node.value, st, "Expression")
}
export { simple, ancestor, recursive, findNodeAt, findNodeAround, findNodeAfter, findNodeBefore, make, base };

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@ -1,360 +0,0 @@
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(factory((global.acorn = global.acorn || {}, global.acorn.walk = global.acorn.walk || {})));
}(this, (function (exports) { 'use strict';
// AST walker module for Mozilla Parser API compatible trees
// A simple walk is one where you simply specify callbacks to be
// called on specific nodes. The last two arguments are optional. A
// simple use would be
//
// walk.simple(myTree, {
// Expression: function(node) { ... }
// });
//
// to do something with all expressions. All Parser API node types
// can be used to identify node types, as well as Expression,
// Statement, and ScopeBody, which denote categories of nodes.
//
// The base argument can be used to pass a custom (recursive)
// walker, and state can be used to give this walked an initial
// state.
function simple(node, visitors, base, state, override) {
if (!base) base = exports.base
;(function c(node, st, override) {
var type = override || node.type, found = visitors[type]
base[type](node, st, c)
if (found) found(node, st)
})(node, state, override)
}
// An ancestor walk keeps an array of ancestor nodes (including the
// current node) and passes them to the callback as third parameter
// (and also as state parameter when no other state is present).
function ancestor(node, visitors, base, state) {
if (!base) base = exports.base
var ancestors = []
;(function c(node, st, override) {
var type = override || node.type, found = visitors[type]
var isNew = node != ancestors[ancestors.length - 1]
if (isNew) ancestors.push(node)
base[type](node, st, c)
if (found) found(node, st || ancestors, ancestors)
if (isNew) ancestors.pop()
})(node, state)
}
// A recursive walk is one where your functions override the default
// walkers. They can modify and replace the state parameter that's
// threaded through the walk, and can opt how and whether to walk
// their child nodes (by calling their third argument on these
// nodes).
function recursive(node, state, funcs, base, override) {
var visitor = funcs ? exports.make(funcs, base) : base
;(function c(node, st, override) {
visitor[override || node.type](node, st, c)
})(node, state, override)
}
function makeTest(test) {
if (typeof test == "string")
return function (type) { return type == test; }
else if (!test)
return function () { return true; }
else
return test
}
var Found = function Found(node, state) { this.node = node; this.state = state };
// Find a node with a given start, end, and type (all are optional,
// null can be used as wildcard). Returns a {node, state} object, or
// undefined when it doesn't find a matching node.
function findNodeAt(node, start, end, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
try {
;(function c(node, st, override) {
var type = override || node.type
if ((start == null || node.start <= start) &&
(end == null || node.end >= end))
base[type](node, st, c)
if ((start == null || node.start == start) &&
(end == null || node.end == end) &&
test(type, node))
throw new Found(node, st)
})(node, state)
} catch (e) {
if (e instanceof Found) return e
throw e
}
}
// Find the innermost node of a given type that contains the given
// position. Interface similar to findNodeAt.
function findNodeAround(node, pos, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
try {
;(function c(node, st, override) {
var type = override || node.type
if (node.start > pos || node.end < pos) return
base[type](node, st, c)
if (test(type, node)) throw new Found(node, st)
})(node, state)
} catch (e) {
if (e instanceof Found) return e
throw e
}
}
// Find the outermost matching node after a given position.
function findNodeAfter(node, pos, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
try {
;(function c(node, st, override) {
if (node.end < pos) return
var type = override || node.type
if (node.start >= pos && test(type, node)) throw new Found(node, st)
base[type](node, st, c)
})(node, state)
} catch (e) {
if (e instanceof Found) return e
throw e
}
}
// Find the outermost matching node before a given position.
function findNodeBefore(node, pos, test, base, state) {
test = makeTest(test)
if (!base) base = exports.base
var max
;(function c(node, st, override) {
if (node.start > pos) return
var type = override || node.type
if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node))
max = new Found(node, st)
base[type](node, st, c)
})(node, state)
return max
}
// Fallback to an Object.create polyfill for older environments.
var create = Object.create || function(proto) {
function Ctor() {}
Ctor.prototype = proto
return new Ctor
}
// Used to create a custom walker. Will fill in all missing node
// type properties with the defaults.
function make(funcs, base) {
if (!base) base = exports.base
var visitor = create(base)
for (var type in funcs) visitor[type] = funcs[type]
return visitor
}
function skipThrough(node, st, c) { c(node, st) }
function ignore(_node, _st, _c) {}
// Node walkers.
var base = {}
base.Program = base.BlockStatement = function (node, st, c) {
for (var i = 0; i < node.body.length; ++i)
c(node.body[i], st, "Statement")
}
base.Statement = skipThrough
base.EmptyStatement = ignore
base.ExpressionStatement = base.ParenthesizedExpression =
function (node, st, c) { return c(node.expression, st, "Expression"); }
base.IfStatement = function (node, st, c) {
c(node.test, st, "Expression")
c(node.consequent, st, "Statement")
if (node.alternate) c(node.alternate, st, "Statement")
}
base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); }
base.BreakStatement = base.ContinueStatement = ignore
base.WithStatement = function (node, st, c) {
c(node.object, st, "Expression")
c(node.body, st, "Statement")
}
base.SwitchStatement = function (node, st, c) {
c(node.discriminant, st, "Expression")
for (var i = 0; i < node.cases.length; ++i) {
var cs = node.cases[i]
if (cs.test) c(cs.test, st, "Expression")
for (var j = 0; j < cs.consequent.length; ++j)
c(cs.consequent[j], st, "Statement")
}
}
base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) {
if (node.argument) c(node.argument, st, "Expression")
}
base.ThrowStatement = base.SpreadElement =
function (node, st, c) { return c(node.argument, st, "Expression"); }
base.TryStatement = function (node, st, c) {
c(node.block, st, "Statement")
if (node.handler) c(node.handler, st)
if (node.finalizer) c(node.finalizer, st, "Statement")
}
base.CatchClause = function (node, st, c) {
c(node.param, st, "Pattern")
c(node.body, st, "ScopeBody")
}
base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
c(node.test, st, "Expression")
c(node.body, st, "Statement")
}
base.ForStatement = function (node, st, c) {
if (node.init) c(node.init, st, "ForInit")
if (node.test) c(node.test, st, "Expression")
if (node.update) c(node.update, st, "Expression")
c(node.body, st, "Statement")
}
base.ForInStatement = base.ForOfStatement = function (node, st, c) {
c(node.left, st, "ForInit")
c(node.right, st, "Expression")
c(node.body, st, "Statement")
}
base.ForInit = function (node, st, c) {
if (node.type == "VariableDeclaration") c(node, st)
else c(node, st, "Expression")
}
base.DebuggerStatement = ignore
base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); }
base.VariableDeclaration = function (node, st, c) {
for (var i = 0; i < node.declarations.length; ++i)
c(node.declarations[i], st)
}
base.VariableDeclarator = function (node, st, c) {
c(node.id, st, "Pattern")
if (node.init) c(node.init, st, "Expression")
}
base.Function = function (node, st, c) {
if (node.id) c(node.id, st, "Pattern")
for (var i = 0; i < node.params.length; i++)
c(node.params[i], st, "Pattern")
c(node.body, st, node.expression ? "ScopeExpression" : "ScopeBody")
}
// FIXME drop these node types in next major version
// (They are awkward, and in ES6 every block can be a scope.)
base.ScopeBody = function (node, st, c) { return c(node, st, "Statement"); }
base.ScopeExpression = function (node, st, c) { return c(node, st, "Expression"); }
base.Pattern = function (node, st, c) {
if (node.type == "Identifier")
c(node, st, "VariablePattern")
else if (node.type == "MemberExpression")
c(node, st, "MemberPattern")
else
c(node, st)
}
base.VariablePattern = ignore
base.MemberPattern = skipThrough
base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); }
base.ArrayPattern = function (node, st, c) {
for (var i = 0; i < node.elements.length; ++i) {
var elt = node.elements[i]
if (elt) c(elt, st, "Pattern")
}
}
base.ObjectPattern = function (node, st, c) {
for (var i = 0; i < node.properties.length; ++i)
c(node.properties[i].value, st, "Pattern")
}
base.Expression = skipThrough
base.ThisExpression = base.Super = base.MetaProperty = ignore
base.ArrayExpression = function (node, st, c) {
for (var i = 0; i < node.elements.length; ++i) {
var elt = node.elements[i]
if (elt) c(elt, st, "Expression")
}
}
base.ObjectExpression = function (node, st, c) {
for (var i = 0; i < node.properties.length; ++i)
c(node.properties[i], st)
}
base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration
base.SequenceExpression = base.TemplateLiteral = function (node, st, c) {
for (var i = 0; i < node.expressions.length; ++i)
c(node.expressions[i], st, "Expression")
}
base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
c(node.argument, st, "Expression")
}
base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
c(node.left, st, "Expression")
c(node.right, st, "Expression")
}
base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
c(node.left, st, "Pattern")
c(node.right, st, "Expression")
}
base.ConditionalExpression = function (node, st, c) {
c(node.test, st, "Expression")
c(node.consequent, st, "Expression")
c(node.alternate, st, "Expression")
}
base.NewExpression = base.CallExpression = function (node, st, c) {
c(node.callee, st, "Expression")
if (node.arguments) for (var i = 0; i < node.arguments.length; ++i)
c(node.arguments[i], st, "Expression")
}
base.MemberExpression = function (node, st, c) {
c(node.object, st, "Expression")
if (node.computed) c(node.property, st, "Expression")
}
base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
if (node.declaration)
c(node.declaration, st, node.type == "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression")
if (node.source) c(node.source, st, "Expression")
}
base.ExportAllDeclaration = function (node, st, c) {
c(node.source, st, "Expression")
}
base.ImportDeclaration = function (node, st, c) {
for (var i = 0; i < node.specifiers.length; i++)
c(node.specifiers[i], st)
c(node.source, st, "Expression")
}
base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore
base.TaggedTemplateExpression = function (node, st, c) {
c(node.tag, st, "Expression")
c(node.quasi, st)
}
base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); }
base.Class = function (node, st, c) {
if (node.id) c(node.id, st, "Pattern")
if (node.superClass) c(node.superClass, st, "Expression")
for (var i = 0; i < node.body.body.length; i++)
c(node.body.body[i], st)
}
base.MethodDefinition = base.Property = function (node, st, c) {
if (node.computed) c(node.key, st, "Expression")
c(node.value, st, "Expression")
}
exports.simple = simple;
exports.ancestor = ancestor;
exports.recursive = recursive;
exports.findNodeAt = findNodeAt;
exports.findNodeAround = findNodeAround;
exports.findNodeAfter = findNodeAfter;
exports.findNodeBefore = findNodeBefore;
exports.make = make;
exports.base = base;
Object.defineProperty(exports, '__esModule', { value: true });
})));

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@ -1,275 +0,0 @@
{
"_args": [
[
"acorn@^4.0.3",
"/home/wso2/projects/wso2/iot/chathura/device-mgt/carbon-device-mgt/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.ui/src/main/resources/publisher/node_modules/acorn-dynamic-import"
]
],
"_from": "acorn@>=4.0.3 <5.0.0",
"_id": "acorn@4.0.13",
"_inCache": true,
"_installable": true,
"_location": "/acorn-dynamic-import/acorn",
"_nodeVersion": "6.9.1",
"_npmOperationalInternal": {
"host": "s3://npm-registry-packages",
"tmp": "tmp/acorn-4.0.13.tgz_1495621718785_0.37868548510596156"
},
"_npmUser": {
"email": "marijnh@gmail.com",
"name": "marijn"
},
"_npmVersion": "3.10.8",
"_phantomChildren": {},
"_requested": {
"name": "acorn",
"raw": "acorn@^4.0.3",
"rawSpec": "^4.0.3",
"scope": null,
"spec": ">=4.0.3 <5.0.0",
"type": "range"
},
"_requiredBy": [
"/acorn-dynamic-import"
],
"_resolved": "https://registry.npmjs.org/acorn/-/acorn-4.0.13.tgz",
"_shasum": "105495ae5361d697bd195c825192e1ad7f253787",
"_shrinkwrap": null,
"_spec": "acorn@^4.0.3",
"_where": "/home/wso2/projects/wso2/iot/chathura/device-mgt/carbon-device-mgt/components/application-mgt/org.wso2.carbon.device.application.mgt.publisher.ui/src/main/resources/publisher/node_modules/acorn-dynamic-import",
"bin": {
"acorn": "./bin/acorn"
},
"bugs": {
"url": "https://github.com/ternjs/acorn/issues"
},
"contributors": [
{
"name": "Kevin Kwok"
},
{
"name": "List of Acorn contributors. Updated before every release."
},
{
"name": "Alistair Braidwood"
},
{
"name": "Amila Welihinda"
},
{
"name": "Andres Suarez"
},
{
"name": "Angelo"
},
{
"name": "Aparajita Fishman"
},
{
"name": "Arian Stolwijk"
},
{
"name": "Artem Govorov"
},
{
"name": "Brandon Mills"
},
{
"name": "Charles Hughes"
},
{
"name": "Conrad Irwin"
},
{
"name": "Daniel Tschinder"
},
{
"name": "David Bonnet"
},
{
"name": "Domenico Matteo"
},
{
"name": "Forbes Lindesay"
},
{
"name": "Gilad Peleg"
},
{
"name": "impinball"
},
{
"name": "Ingvar Stepanyan"
},
{
"name": "Jackson Ray Hamilton"
},
{
"name": "Jesse McCarthy"
},
{
"name": "Jiaxing Wang"
},
{
"name": "Joel Kemp"
},
{
"name": "Johannes Herr"
},
{
"name": "Jordan Klassen"
},
{
"name": "Jürg Lehni"
},
{
"name": "Kai Cataldo"
},
{
"name": "keeyipchan"
},
{
"name": "Keheliya Gallaba"
},
{
"name": "Kevin Irish"
},
{
"name": "Adrian Rakovsky"
},
{
"name": "krator"
},
{
"name": "Marijn Haverbeke"
},
{
"name": "Martin Carlberg"
},
{
"name": "Mat Garcia"
},
{
"name": "Mathias Bynens"
},
{
"name": "Mathieu 'p01' Henri"
},
{
"name": "Matthew Bastien"
},
{
"name": "Max Schaefer"
},
{
"name": "Max Zerzouri"
},
{
"name": "Mihai Bazon"
},
{
"name": "Mike Rennie"
},
{
"name": "naoh"
},
{
"name": "Nicholas C. Zakas"
},
{
"name": "Nick Fitzgerald"
},
{
"name": "Olivier Thomann"
},
{
"name": "Oskar Schöldström"
},
{
"name": "Paul Harper"
},
{
"name": "Peter Rust"
},
{
"name": "PlNG"
},
{
"name": "Prayag Verma"
},
{
"name": "ReadmeCritic"
},
{
"name": "r-e-d"
},
{
"name": "Richard Gibson"
},
{
"name": "Rich Harris"
},
{
"name": "Sebastian McKenzie"
},
{
"name": "Simen Bekkhus"
},
{
"name": "Timothy Gu"
},
{
"name": "Toru Nagashima"
},
{
"name": "Wexpo Lyu"
},
{
"name": "zsjforcn"
}
],
"dependencies": {},
"description": "ECMAScript parser",
"devDependencies": {
"rollup": "^0.34.1",
"rollup-plugin-buble": "^0.11.0",
"unicode-9.0.0": "^0.7.0"
},
"directories": {},
"dist": {
"shasum": "105495ae5361d697bd195c825192e1ad7f253787",
"tarball": "https://registry.npmjs.org/acorn/-/acorn-4.0.13.tgz"
},
"engines": {
"node": ">=0.4.0"
},
"gitHead": "a7359dbaed1f2a5ba204e82522ad5c6a3d1fe367",
"homepage": "https://github.com/ternjs/acorn",
"jsnext:main": "dist/acorn.es.js",
"license": "MIT",
"main": "dist/acorn.js",
"maintainers": [
{
"name": "marijn",
"email": "marijnh@gmail.com"
}
],
"name": "acorn",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "git+https://github.com/ternjs/acorn.git"
},
"scripts": {
"build": "npm run build:main && npm run build:walk && npm run build:loose && npm run build:bin",
"build:bin": "rollup -c rollup/config.bin.js",
"build:loose": "rollup -c rollup/config.loose.js",
"build:main": "rollup -c rollup/config.main.js",
"build:walk": "rollup -c rollup/config.walk.js",
"prepublish": "npm test",
"pretest": "npm run build",
"test": "node test/run.js"
},
"version": "4.0.13"
}

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@ -1,60 +0,0 @@
import {basename} from "path"
import {readFileSync as readFile} from "fs"
import * as acorn from "acorn"
let infile, forceFile, silent = false, compact = false, tokenize = false
const options = {}
function help(status) {
const print = (status == 0) ? console.log : console.error
print("usage: " + basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6|--ecma7|...|--ecma2015|--ecma2016|...]")
print(" [--tokenize] [--locations] [---allow-hash-bang] [--compact] [--silent] [--module] [--help] [--] [infile]")
process.exit(status)
}
for (let i = 2; i < process.argv.length; ++i) {
const arg = process.argv[i]
if ((arg == "-" || arg[0] != "-") && !infile) infile = arg
else if (arg == "--" && !infile && i + 2 == process.argv.length) forceFile = infile = process.argv[++i]
else if (arg == "--locations") options.locations = true
else if (arg == "--allow-hash-bang") options.allowHashBang = true
else if (arg == "--silent") silent = true
else if (arg == "--compact") compact = true
else if (arg == "--help") help(0)
else if (arg == "--tokenize") tokenize = true
else if (arg == "--module") options.sourceType = 'module'
else {
let match = arg.match(/^--ecma(\d+)$/)
if (match)
options.ecmaVersion = +match[1]
else
help(1)
}
}
function run(code) {
let result
if (!tokenize) {
try { result = acorn.parse(code, options) }
catch(e) { console.error(e.message); process.exit(1) }
} else {
result = []
let tokenizer = acorn.tokenizer(code, options), token
while (true) {
try { token = tokenizer.getToken() }
catch(e) { console.error(e.message); process.exit(1) }
result.push(token)
if (token.type == acorn.tokTypes.eof) break
}
}
if (!silent) console.log(JSON.stringify(result, null, compact ? null : 2))
}
if (forceFile || infile && infile != "-") {
run(readFile(infile, "utf8"))
} else {
let code = ""
process.stdin.resume()
process.stdin.on("data", chunk => code += chunk)
process.stdin.on("end", () => run(code))
}

View File

@ -1,819 +0,0 @@
// A recursive descent parser operates by defining functions for all
// syntactic elements, and recursively calling those, each function
// advancing the input stream and returning an AST node. Precedence
// of constructs (for example, the fact that `!x[1]` means `!(x[1])`
// instead of `(!x)[1]` is handled by the fact that the parser
// function that parses unary prefix operators is called first, and
// in turn calls the function that parses `[]` subscripts — that
// way, it'll receive the node for `x[1]` already parsed, and wraps
// *that* in the unary operator node.
//
// Acorn uses an [operator precedence parser][opp] to handle binary
// operator precedence, because it is much more compact than using
// the technique outlined above, which uses different, nesting
// functions to specify precedence, for all of the ten binary
// precedence levels that JavaScript defines.
//
// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser
import {types as tt} from "./tokentype"
import {Parser} from "./state"
import {DestructuringErrors} from "./parseutil"
const pp = Parser.prototype
// Check if property name clashes with already added.
// Object/class getters and setters are not allowed to clash —
// either with each other or with an init property — and in
// strict mode, init properties are also not allowed to be repeated.
pp.checkPropClash = function(prop, propHash) {
if (this.options.ecmaVersion >= 6 && (prop.computed || prop.method || prop.shorthand))
return
let {key} = prop, name
switch (key.type) {
case "Identifier": name = key.name; break
case "Literal": name = String(key.value); break
default: return
}
let {kind} = prop
if (this.options.ecmaVersion >= 6) {
if (name === "__proto__" && kind === "init") {
if (propHash.proto) this.raiseRecoverable(key.start, "Redefinition of __proto__ property")
propHash.proto = true
}
return
}
name = "$" + name
let other = propHash[name]
if (other) {
let isGetSet = kind !== "init"
if ((this.strict || isGetSet) && other[kind] || !(isGetSet ^ other.init))
this.raiseRecoverable(key.start, "Redefinition of property")
} else {
other = propHash[name] = {
init: false,
get: false,
set: false
}
}
other[kind] = true
}
// ### Expression parsing
// These nest, from the most general expression type at the top to
// 'atomic', nondivisible expression types at the bottom. Most of
// the functions will simply let the function(s) below them parse,
// and, *if* the syntactic construct they handle is present, wrap
// the AST node that the inner parser gave them in another node.
// Parse a full expression. The optional arguments are used to
// forbid the `in` operator (in for loops initalization expressions)
// and provide reference for storing '=' operator inside shorthand
// property assignment in contexts where both object expression
// and object pattern might appear (so it's possible to raise
// delayed syntax error at correct position).
pp.parseExpression = function(noIn, refDestructuringErrors) {
let startPos = this.start, startLoc = this.startLoc
let expr = this.parseMaybeAssign(noIn, refDestructuringErrors)
if (this.type === tt.comma) {
let node = this.startNodeAt(startPos, startLoc)
node.expressions = [expr]
while (this.eat(tt.comma)) node.expressions.push(this.parseMaybeAssign(noIn, refDestructuringErrors))
return this.finishNode(node, "SequenceExpression")
}
return expr
}
// Parse an assignment expression. This includes applications of
// operators like `+=`.
pp.parseMaybeAssign = function(noIn, refDestructuringErrors, afterLeftParse) {
if (this.inGenerator && this.isContextual("yield")) return this.parseYield()
let ownDestructuringErrors = false, oldParenAssign = -1
if (refDestructuringErrors) {
oldParenAssign = refDestructuringErrors.parenthesizedAssign
refDestructuringErrors.parenthesizedAssign = -1
} else {
refDestructuringErrors = new DestructuringErrors
ownDestructuringErrors = true
}
let startPos = this.start, startLoc = this.startLoc
if (this.type == tt.parenL || this.type == tt.name)
this.potentialArrowAt = this.start
let left = this.parseMaybeConditional(noIn, refDestructuringErrors)
if (afterLeftParse) left = afterLeftParse.call(this, left, startPos, startLoc)
if (this.type.isAssign) {
this.checkPatternErrors(refDestructuringErrors, true)
if (!ownDestructuringErrors) DestructuringErrors.call(refDestructuringErrors)
let node = this.startNodeAt(startPos, startLoc)
node.operator = this.value
node.left = this.type === tt.eq ? this.toAssignable(left) : left
refDestructuringErrors.shorthandAssign = -1 // reset because shorthand default was used correctly
this.checkLVal(left)
this.next()
node.right = this.parseMaybeAssign(noIn)
return this.finishNode(node, "AssignmentExpression")
} else {
if (ownDestructuringErrors) this.checkExpressionErrors(refDestructuringErrors, true)
}
if (oldParenAssign > -1) refDestructuringErrors.parenthesizedAssign = oldParenAssign
return left
}
// Parse a ternary conditional (`?:`) operator.
pp.parseMaybeConditional = function(noIn, refDestructuringErrors) {
let startPos = this.start, startLoc = this.startLoc
let expr = this.parseExprOps(noIn, refDestructuringErrors)
if (this.checkExpressionErrors(refDestructuringErrors)) return expr
if (this.eat(tt.question)) {
let node = this.startNodeAt(startPos, startLoc)
node.test = expr
node.consequent = this.parseMaybeAssign()
this.expect(tt.colon)
node.alternate = this.parseMaybeAssign(noIn)
return this.finishNode(node, "ConditionalExpression")
}
return expr
}
// Start the precedence parser.
pp.parseExprOps = function(noIn, refDestructuringErrors) {
let startPos = this.start, startLoc = this.startLoc
let expr = this.parseMaybeUnary(refDestructuringErrors, false)
if (this.checkExpressionErrors(refDestructuringErrors)) return expr
return this.parseExprOp(expr, startPos, startLoc, -1, noIn)
}
// Parse binary operators with the operator precedence parsing
// algorithm. `left` is the left-hand side of the operator.
// `minPrec` provides context that allows the function to stop and
// defer further parser to one of its callers when it encounters an
// operator that has a lower precedence than the set it is parsing.
pp.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, noIn) {
let prec = this.type.binop
if (prec != null && (!noIn || this.type !== tt._in)) {
if (prec > minPrec) {
let logical = this.type === tt.logicalOR || this.type === tt.logicalAND
let op = this.value
this.next()
let startPos = this.start, startLoc = this.startLoc
let right = this.parseExprOp(this.parseMaybeUnary(null, false), startPos, startLoc, prec, noIn)
let node = this.buildBinary(leftStartPos, leftStartLoc, left, right, op, logical)
return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn)
}
}
return left
}
pp.buildBinary = function(startPos, startLoc, left, right, op, logical) {
let node = this.startNodeAt(startPos, startLoc)
node.left = left
node.operator = op
node.right = right
return this.finishNode(node, logical ? "LogicalExpression" : "BinaryExpression")
}
// Parse unary operators, both prefix and postfix.
pp.parseMaybeUnary = function(refDestructuringErrors, sawUnary) {
let startPos = this.start, startLoc = this.startLoc, expr
if (this.inAsync && this.isContextual("await")) {
expr = this.parseAwait(refDestructuringErrors)
sawUnary = true
} else if (this.type.prefix) {
let node = this.startNode(), update = this.type === tt.incDec
node.operator = this.value
node.prefix = true
this.next()
node.argument = this.parseMaybeUnary(null, true)
this.checkExpressionErrors(refDestructuringErrors, true)
if (update) this.checkLVal(node.argument)
else if (this.strict && node.operator === "delete" &&
node.argument.type === "Identifier")
this.raiseRecoverable(node.start, "Deleting local variable in strict mode")
else sawUnary = true
expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression")
} else {
expr = this.parseExprSubscripts(refDestructuringErrors)
if (this.checkExpressionErrors(refDestructuringErrors)) return expr
while (this.type.postfix && !this.canInsertSemicolon()) {
let node = this.startNodeAt(startPos, startLoc)
node.operator = this.value
node.prefix = false
node.argument = expr
this.checkLVal(expr)
this.next()
expr = this.finishNode(node, "UpdateExpression")
}
}
if (!sawUnary && this.eat(tt.starstar))
return this.buildBinary(startPos, startLoc, expr, this.parseMaybeUnary(null, false), "**", false)
else
return expr
}
// Parse call, dot, and `[]`-subscript expressions.
pp.parseExprSubscripts = function(refDestructuringErrors) {
let startPos = this.start, startLoc = this.startLoc
let expr = this.parseExprAtom(refDestructuringErrors)
let skipArrowSubscripts = expr.type === "ArrowFunctionExpression" && this.input.slice(this.lastTokStart, this.lastTokEnd) !== ")"
if (this.checkExpressionErrors(refDestructuringErrors) || skipArrowSubscripts) return expr
let result = this.parseSubscripts(expr, startPos, startLoc)
if (refDestructuringErrors && result.type === "MemberExpression") {
if (refDestructuringErrors.parenthesizedAssign >= result.start) refDestructuringErrors.parenthesizedAssign = -1
if (refDestructuringErrors.parenthesizedBind >= result.start) refDestructuringErrors.parenthesizedBind = -1
}
return result
}
pp.parseSubscripts = function(base, startPos, startLoc, noCalls) {
let maybeAsyncArrow = this.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" &&
this.lastTokEnd == base.end && !this.canInsertSemicolon()
for (let computed;;) {
if ((computed = this.eat(tt.bracketL)) || this.eat(tt.dot)) {
let node = this.startNodeAt(startPos, startLoc)
node.object = base
node.property = computed ? this.parseExpression() : this.parseIdent(true)
node.computed = !!computed
if (computed) this.expect(tt.bracketR)
base = this.finishNode(node, "MemberExpression")
} else if (!noCalls && this.eat(tt.parenL)) {
let refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos
this.yieldPos = 0
this.awaitPos = 0
let exprList = this.parseExprList(tt.parenR, this.options.ecmaVersion >= 8, false, refDestructuringErrors)
if (maybeAsyncArrow && !this.canInsertSemicolon() && this.eat(tt.arrow)) {
this.checkPatternErrors(refDestructuringErrors, false)
this.checkYieldAwaitInDefaultParams()
this.yieldPos = oldYieldPos
this.awaitPos = oldAwaitPos
return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList, true)
}
this.checkExpressionErrors(refDestructuringErrors, true)
this.yieldPos = oldYieldPos || this.yieldPos
this.awaitPos = oldAwaitPos || this.awaitPos
let node = this.startNodeAt(startPos, startLoc)
node.callee = base
node.arguments = exprList
base = this.finishNode(node, "CallExpression")
} else if (this.type === tt.backQuote) {
let node = this.startNodeAt(startPos, startLoc)
node.tag = base
node.quasi = this.parseTemplate()
base = this.finishNode(node, "TaggedTemplateExpression")
} else {
return base
}
}
}
// Parse an atomic expression — either a single token that is an
// expression, an expression started by a keyword like `function` or
// `new`, or an expression wrapped in punctuation like `()`, `[]`,
// or `{}`.
pp.parseExprAtom = function(refDestructuringErrors) {
let node, canBeArrow = this.potentialArrowAt == this.start
switch (this.type) {
case tt._super:
if (!this.inFunction)
this.raise(this.start, "'super' outside of function or class")
case tt._this:
let type = this.type === tt._this ? "ThisExpression" : "Super"
node = this.startNode()
this.next()
return this.finishNode(node, type)
case tt.name:
let startPos = this.start, startLoc = this.startLoc
let id = this.parseIdent(this.type !== tt.name)
if (this.options.ecmaVersion >= 8 && id.name === "async" && !this.canInsertSemicolon() && this.eat(tt._function))
return this.parseFunction(this.startNodeAt(startPos, startLoc), false, false, true)
if (canBeArrow && !this.canInsertSemicolon()) {
if (this.eat(tt.arrow))
return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], false)
if (this.options.ecmaVersion >= 8 && id.name === "async" && this.type === tt.name) {
id = this.parseIdent()
if (this.canInsertSemicolon() || !this.eat(tt.arrow))
this.unexpected()
return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], true)
}
}
return id
case tt.regexp:
let value = this.value
node = this.parseLiteral(value.value)
node.regex = {pattern: value.pattern, flags: value.flags}
return node
case tt.num: case tt.string:
return this.parseLiteral(this.value)
case tt._null: case tt._true: case tt._false:
node = this.startNode()
node.value = this.type === tt._null ? null : this.type === tt._true
node.raw = this.type.keyword
this.next()
return this.finishNode(node, "Literal")
case tt.parenL:
let start = this.start, expr = this.parseParenAndDistinguishExpression(canBeArrow)
if (refDestructuringErrors) {
if (refDestructuringErrors.parenthesizedAssign < 0 && !this.isSimpleAssignTarget(expr))
refDestructuringErrors.parenthesizedAssign = start
if (refDestructuringErrors.parenthesizedBind < 0)
refDestructuringErrors.parenthesizedBind = start
}
return expr
case tt.bracketL:
node = this.startNode()
this.next()
node.elements = this.parseExprList(tt.bracketR, true, true, refDestructuringErrors)
return this.finishNode(node, "ArrayExpression")
case tt.braceL:
return this.parseObj(false, refDestructuringErrors)
case tt._function:
node = this.startNode()
this.next()
return this.parseFunction(node, false)
case tt._class:
return this.parseClass(this.startNode(), false)
case tt._new:
return this.parseNew()
case tt.backQuote:
return this.parseTemplate()
default:
this.unexpected()
}
}
pp.parseLiteral = function(value) {
let node = this.startNode()
node.value = value
node.raw = this.input.slice(this.start, this.end)
this.next()
return this.finishNode(node, "Literal")
}
pp.parseParenExpression = function() {
this.expect(tt.parenL)
let val = this.parseExpression()
this.expect(tt.parenR)
return val
}
pp.parseParenAndDistinguishExpression = function(canBeArrow) {
let startPos = this.start, startLoc = this.startLoc, val, allowTrailingComma = this.options.ecmaVersion >= 8
if (this.options.ecmaVersion >= 6) {
this.next()
let innerStartPos = this.start, innerStartLoc = this.startLoc
let exprList = [], first = true, lastIsComma = false
let refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, spreadStart, innerParenStart
this.yieldPos = 0
this.awaitPos = 0
while (this.type !== tt.parenR) {
first ? first = false : this.expect(tt.comma)
if (allowTrailingComma && this.afterTrailingComma(tt.parenR, true)) {
lastIsComma = true
break
} else if (this.type === tt.ellipsis) {
spreadStart = this.start
exprList.push(this.parseParenItem(this.parseRest()))
if (this.type === tt.comma) this.raise(this.start, "Comma is not permitted after the rest element")
break
} else {
if (this.type === tt.parenL && !innerParenStart) {
innerParenStart = this.start
}
exprList.push(this.parseMaybeAssign(false, refDestructuringErrors, this.parseParenItem))
}
}
let innerEndPos = this.start, innerEndLoc = this.startLoc
this.expect(tt.parenR)
if (canBeArrow && !this.canInsertSemicolon() && this.eat(tt.arrow)) {
this.checkPatternErrors(refDestructuringErrors, false)
this.checkYieldAwaitInDefaultParams()
if (innerParenStart) this.unexpected(innerParenStart)
this.yieldPos = oldYieldPos
this.awaitPos = oldAwaitPos
return this.parseParenArrowList(startPos, startLoc, exprList)
}
if (!exprList.length || lastIsComma) this.unexpected(this.lastTokStart)
if (spreadStart) this.unexpected(spreadStart)
this.checkExpressionErrors(refDestructuringErrors, true)
this.yieldPos = oldYieldPos || this.yieldPos
this.awaitPos = oldAwaitPos || this.awaitPos
if (exprList.length > 1) {
val = this.startNodeAt(innerStartPos, innerStartLoc)
val.expressions = exprList
this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc)
} else {
val = exprList[0]
}
} else {
val = this.parseParenExpression()
}
if (this.options.preserveParens) {
let par = this.startNodeAt(startPos, startLoc)
par.expression = val
return this.finishNode(par, "ParenthesizedExpression")
} else {
return val
}
}
pp.parseParenItem = function(item) {
return item
}
pp.parseParenArrowList = function(startPos, startLoc, exprList) {
return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList)
}
// New's precedence is slightly tricky. It must allow its argument to
// be a `[]` or dot subscript expression, but not a call — at least,
// not without wrapping it in parentheses. Thus, it uses the noCalls
// argument to parseSubscripts to prevent it from consuming the
// argument list.
const empty = []
pp.parseNew = function() {
let node = this.startNode()
let meta = this.parseIdent(true)
if (this.options.ecmaVersion >= 6 && this.eat(tt.dot)) {
node.meta = meta
node.property = this.parseIdent(true)
if (node.property.name !== "target")
this.raiseRecoverable(node.property.start, "The only valid meta property for new is new.target")
if (!this.inFunction)
this.raiseRecoverable(node.start, "new.target can only be used in functions")
return this.finishNode(node, "MetaProperty")
}
let startPos = this.start, startLoc = this.startLoc
node.callee = this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true)
if (this.eat(tt.parenL)) node.arguments = this.parseExprList(tt.parenR, this.options.ecmaVersion >= 8, false)
else node.arguments = empty
return this.finishNode(node, "NewExpression")
}
// Parse template expression.
pp.parseTemplateElement = function() {
let elem = this.startNode()
elem.value = {
raw: this.input.slice(this.start, this.end).replace(/\r\n?/g, '\n'),
cooked: this.value
}
this.next()
elem.tail = this.type === tt.backQuote
return this.finishNode(elem, "TemplateElement")
}
pp.parseTemplate = function() {
let node = this.startNode()
this.next()
node.expressions = []
let curElt = this.parseTemplateElement()
node.quasis = [curElt]
while (!curElt.tail) {
this.expect(tt.dollarBraceL)
node.expressions.push(this.parseExpression())
this.expect(tt.braceR)
node.quasis.push(curElt = this.parseTemplateElement())
}
this.next()
return this.finishNode(node, "TemplateLiteral")
}
// Parse an object literal or binding pattern.
pp.parseObj = function(isPattern, refDestructuringErrors) {
let node = this.startNode(), first = true, propHash = {}
node.properties = []
this.next()
while (!this.eat(tt.braceR)) {
if (!first) {
this.expect(tt.comma)
if (this.afterTrailingComma(tt.braceR)) break
} else first = false
let prop = this.startNode(), isGenerator, isAsync, startPos, startLoc
if (this.options.ecmaVersion >= 6) {
prop.method = false
prop.shorthand = false
if (isPattern || refDestructuringErrors) {
startPos = this.start
startLoc = this.startLoc
}
if (!isPattern)
isGenerator = this.eat(tt.star)
}
this.parsePropertyName(prop)
if (!isPattern && this.options.ecmaVersion >= 8 && !isGenerator && !prop.computed &&
prop.key.type === "Identifier" && prop.key.name === "async" && this.type !== tt.parenL &&
this.type !== tt.colon && !this.canInsertSemicolon()) {
isAsync = true
this.parsePropertyName(prop, refDestructuringErrors)
} else {
isAsync = false
}
this.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors)
this.checkPropClash(prop, propHash)
node.properties.push(this.finishNode(prop, "Property"))
}
return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
}
pp.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors) {
if ((isGenerator || isAsync) && this.type === tt.colon)
this.unexpected()
if (this.eat(tt.colon)) {
prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc) : this.parseMaybeAssign(false, refDestructuringErrors)
prop.kind = "init"
} else if (this.options.ecmaVersion >= 6 && this.type === tt.parenL) {
if (isPattern) this.unexpected()
prop.kind = "init"
prop.method = true
prop.value = this.parseMethod(isGenerator, isAsync)
} else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
(prop.key.name === "get" || prop.key.name === "set") &&
(this.type != tt.comma && this.type != tt.braceR)) {
if (isGenerator || isAsync || isPattern) this.unexpected()
prop.kind = prop.key.name
this.parsePropertyName(prop)
prop.value = this.parseMethod(false)
let paramCount = prop.kind === "get" ? 0 : 1
if (prop.value.params.length !== paramCount) {
let start = prop.value.start
if (prop.kind === "get")
this.raiseRecoverable(start, "getter should have no params")
else
this.raiseRecoverable(start, "setter should have exactly one param")
} else {
if (prop.kind === "set" && prop.value.params[0].type === "RestElement")
this.raiseRecoverable(prop.value.params[0].start, "Setter cannot use rest params")
}
} else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
if (this.keywords.test(prop.key.name) ||
(this.strict ? this.reservedWordsStrict : this.reservedWords).test(prop.key.name) ||
(this.inGenerator && prop.key.name == "yield") ||
(this.inAsync && prop.key.name == "await"))
this.raiseRecoverable(prop.key.start, "'" + prop.key.name + "' can not be used as shorthand property")
prop.kind = "init"
if (isPattern) {
prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key)
} else if (this.type === tt.eq && refDestructuringErrors) {
if (refDestructuringErrors.shorthandAssign < 0)
refDestructuringErrors.shorthandAssign = this.start
prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key)
} else {
prop.value = prop.key
}
prop.shorthand = true
} else this.unexpected()
}
pp.parsePropertyName = function(prop) {
if (this.options.ecmaVersion >= 6) {
if (this.eat(tt.bracketL)) {
prop.computed = true
prop.key = this.parseMaybeAssign()
this.expect(tt.bracketR)
return prop.key
} else {
prop.computed = false
}
}
return prop.key = this.type === tt.num || this.type === tt.string ? this.parseExprAtom() : this.parseIdent(true)
}
// Initialize empty function node.
pp.initFunction = function(node) {
node.id = null
if (this.options.ecmaVersion >= 6) {
node.generator = false
node.expression = false
}
if (this.options.ecmaVersion >= 8)
node.async = false
}
// Parse object or class method.
pp.parseMethod = function(isGenerator, isAsync) {
let node = this.startNode(), oldInGen = this.inGenerator, oldInAsync = this.inAsync,
oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction
this.initFunction(node)
if (this.options.ecmaVersion >= 6)
node.generator = isGenerator
if (this.options.ecmaVersion >= 8)
node.async = !!isAsync
this.inGenerator = node.generator
this.inAsync = node.async
this.yieldPos = 0
this.awaitPos = 0
this.inFunction = true
this.expect(tt.parenL)
node.params = this.parseBindingList(tt.parenR, false, this.options.ecmaVersion >= 8)
this.checkYieldAwaitInDefaultParams()
this.parseFunctionBody(node, false)
this.inGenerator = oldInGen
this.inAsync = oldInAsync
this.yieldPos = oldYieldPos
this.awaitPos = oldAwaitPos
this.inFunction = oldInFunc
return this.finishNode(node, "FunctionExpression")
}
// Parse arrow function expression with given parameters.
pp.parseArrowExpression = function(node, params, isAsync) {
let oldInGen = this.inGenerator, oldInAsync = this.inAsync,
oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction
this.initFunction(node)
if (this.options.ecmaVersion >= 8)
node.async = !!isAsync
this.inGenerator = false
this.inAsync = node.async
this.yieldPos = 0
this.awaitPos = 0
this.inFunction = true
node.params = this.toAssignableList(params, true)
this.parseFunctionBody(node, true)
this.inGenerator = oldInGen
this.inAsync = oldInAsync
this.yieldPos = oldYieldPos
this.awaitPos = oldAwaitPos
this.inFunction = oldInFunc
return this.finishNode(node, "ArrowFunctionExpression")
}
// Parse function body and check parameters.
pp.parseFunctionBody = function(node, isArrowFunction) {
let isExpression = isArrowFunction && this.type !== tt.braceL
let oldStrict = this.strict, useStrict = false
if (isExpression) {
node.body = this.parseMaybeAssign()
node.expression = true
} else {
let nonSimple = this.options.ecmaVersion >= 7 && !this.isSimpleParamList(node.params)
if (!oldStrict || nonSimple) {
useStrict = this.strictDirective(this.end)
// If this is a strict mode function, verify that argument names
// are not repeated, and it does not try to bind the words `eval`
// or `arguments`.
if (useStrict && nonSimple)
this.raiseRecoverable(node.start, "Illegal 'use strict' directive in function with non-simple parameter list")
}
// Start a new scope with regard to labels and the `inFunction`
// flag (restore them to their old value afterwards).
let oldLabels = this.labels
this.labels = []
if (useStrict) this.strict = true
node.body = this.parseBlock(true)
node.expression = false
this.labels = oldLabels
}
if (oldStrict || useStrict) {
this.strict = true
if (node.id)
this.checkLVal(node.id, true)
this.checkParams(node)
this.strict = oldStrict
} else if (isArrowFunction || !this.isSimpleParamList(node.params)) {
this.checkParams(node)
}
}
pp.isSimpleParamList = function(params) {
for (let i = 0; i < params.length; i++)
if (params[i].type !== "Identifier") return false
return true
}
// Checks function params for various disallowed patterns such as using "eval"
// or "arguments" and duplicate parameters.
pp.checkParams = function(node) {
let nameHash = {}
for (let i = 0; i < node.params.length; i++) this.checkLVal(node.params[i], true, nameHash)
}
// Parses a comma-separated list of expressions, and returns them as
// an array. `close` is the token type that ends the list, and
// `allowEmpty` can be turned on to allow subsequent commas with
// nothing in between them to be parsed as `null` (which is needed
// for array literals).
pp.parseExprList = function(close, allowTrailingComma, allowEmpty, refDestructuringErrors) {
let elts = [], first = true
while (!this.eat(close)) {
if (!first) {
this.expect(tt.comma)
if (allowTrailingComma && this.afterTrailingComma(close)) break
} else first = false
let elt
if (allowEmpty && this.type === tt.comma)
elt = null
else if (this.type === tt.ellipsis) {
elt = this.parseSpread(refDestructuringErrors)
if (refDestructuringErrors && this.type === tt.comma && refDestructuringErrors.trailingComma < 0)
refDestructuringErrors.trailingComma = this.start
} else {
elt = this.parseMaybeAssign(false, refDestructuringErrors)
}
elts.push(elt)
}
return elts
}
// Parse the next token as an identifier. If `liberal` is true (used
// when parsing properties), it will also convert keywords into
// identifiers.
pp.parseIdent = function(liberal) {
let node = this.startNode()
if (liberal && this.options.allowReserved == "never") liberal = false
if (this.type === tt.name) {
if (!liberal && (this.strict ? this.reservedWordsStrict : this.reservedWords).test(this.value) &&
(this.options.ecmaVersion >= 6 ||
this.input.slice(this.start, this.end).indexOf("\\") == -1))
this.raiseRecoverable(this.start, "The keyword '" + this.value + "' is reserved")
if (this.inGenerator && this.value === "yield")
this.raiseRecoverable(this.start, "Can not use 'yield' as identifier inside a generator")
if (this.inAsync && this.value === "await")
this.raiseRecoverable(this.start, "Can not use 'await' as identifier inside an async function")
node.name = this.value
} else if (liberal && this.type.keyword) {
node.name = this.type.keyword
} else {
this.unexpected()
}
this.next()
return this.finishNode(node, "Identifier")
}
// Parses yield expression inside generator.
pp.parseYield = function() {
if (!this.yieldPos) this.yieldPos = this.start
let node = this.startNode()
this.next()
if (this.type == tt.semi || this.canInsertSemicolon() || (this.type != tt.star && !this.type.startsExpr)) {
node.delegate = false
node.argument = null
} else {
node.delegate = this.eat(tt.star)
node.argument = this.parseMaybeAssign()
}
return this.finishNode(node, "YieldExpression")
}
pp.parseAwait = function() {
if (!this.awaitPos) this.awaitPos = this.start
let node = this.startNode()
this.next()
node.argument = this.parseMaybeUnary(null, true)
return this.finishNode(node, "AwaitExpression")
}

View File

@ -1,81 +0,0 @@
// Reserved word lists for various dialects of the language
export const reservedWords = {
3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
5: "class enum extends super const export import",
6: "enum",
strict: "implements interface let package private protected public static yield",
strictBind: "eval arguments"
}
// And the keywords
var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this"
export const keywords = {
5: ecma5AndLessKeywords,
6: ecma5AndLessKeywords + " const class extends export import super"
}
// ## Character categories
// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.
// Generated by `bin/generate-identifier-regex.js`.
let nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fd5\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ae\ua7b0-\ua7b7\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab65\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc"
let nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d4-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c03\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d01-\u0d03\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1cf8\u1cf9\u1dc0-\u1df5\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua900-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f"
const nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]")
const nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]")
nonASCIIidentifierStartChars = nonASCIIidentifierChars = null
// These are a run-length and offset encoded representation of the
// >0xffff code points that are a valid part of identifiers. The
// offset starts at 0x10000, and each pair of numbers represents an
// offset to the next range, and then a size of the range. They were
// generated by bin/generate-identifier-regex.js
const astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,17,26,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,26,45,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,785,52,76,44,33,24,27,35,42,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,25,391,63,32,0,449,56,264,8,2,36,18,0,50,29,881,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,881,68,12,0,67,12,65,0,32,6124,20,754,9486,1,3071,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,10591,541]
const astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,1306,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,52,0,13,2,49,13,10,2,4,9,83,11,7,0,161,11,6,9,7,3,57,0,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,87,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,423,9,838,7,2,7,17,9,57,21,2,13,19882,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239]
// This has a complexity linear to the value of the code. The
// assumption is that looking up astral identifier characters is
// rare.
function isInAstralSet(code, set) {
let pos = 0x10000
for (let i = 0; i < set.length; i += 2) {
pos += set[i]
if (pos > code) return false
pos += set[i + 1]
if (pos >= code) return true
}
}
// Test whether a given character code starts an identifier.
export function isIdentifierStart(code, astral) {
if (code < 65) return code === 36
if (code < 91) return true
if (code < 97) return code === 95
if (code < 123) return true
if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code))
if (astral === false) return false
return isInAstralSet(code, astralIdentifierStartCodes)
}
// Test whether a given character is part of an identifier.
export function isIdentifierChar(code, astral) {
if (code < 48) return code === 36
if (code < 58) return true
if (code < 65) return false
if (code < 91) return true
if (code < 97) return code === 95
if (code < 123) return true
if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code))
if (astral === false) return false
return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)
}

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@ -1,77 +0,0 @@
// Acorn is a tiny, fast JavaScript parser written in JavaScript.
//
// Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and
// various contributors and released under an MIT license.
//
// Git repositories for Acorn are available at
//
// http://marijnhaverbeke.nl/git/acorn
// https://github.com/ternjs/acorn.git
//
// Please use the [github bug tracker][ghbt] to report issues.
//
// [ghbt]: https://github.com/ternjs/acorn/issues
//
// This file defines the main parser interface. The library also comes
// with a [error-tolerant parser][dammit] and an
// [abstract syntax tree walker][walk], defined in other files.
//
// [dammit]: acorn_loose.js
// [walk]: util/walk.js
import {Parser} from "./state"
import "./parseutil"
import "./statement"
import "./lval"
import "./expression"
import "./location"
export {Parser, plugins} from "./state"
export {defaultOptions} from "./options"
export {Position, SourceLocation, getLineInfo} from "./locutil"
export {Node} from "./node"
export {TokenType, types as tokTypes, keywords as keywordTypes} from "./tokentype"
export {TokContext, types as tokContexts} from "./tokencontext"
export {isIdentifierChar, isIdentifierStart} from "./identifier"
export {Token} from "./tokenize"
export {isNewLine, lineBreak, lineBreakG} from "./whitespace"
export const version = "4.0.11"
// The main exported interface (under `self.acorn` when in the
// browser) is a `parse` function that takes a code string and
// returns an abstract syntax tree as specified by [Mozilla parser
// API][api].
//
// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API
export function parse(input, options) {
return new Parser(options, input).parse()
}
// This function tries to parse a single expression at a given
// offset in a string. Useful for parsing mixed-language formats
// that embed JavaScript expressions.
export function parseExpressionAt(input, pos, options) {
let p = new Parser(options, input, pos)
p.nextToken()
return p.parseExpression()
}
// Acorn is organized as a tokenizer and a recursive-descent parser.
// The `tokenizer` export provides an interface to the tokenizer.
export function tokenizer(input, options) {
return new Parser(options, input)
}
// This is a terrible kludge to support the existing, pre-ES6
// interface where the loose parser module retroactively adds exports
// to this module.
export let parse_dammit, LooseParser, pluginsLoose
export function addLooseExports(parse, Parser, plugins) {
parse_dammit = parse
LooseParser = Parser
pluginsLoose = plugins
}

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@ -1,26 +0,0 @@
import {Parser} from "./state"
import {Position, getLineInfo} from "./locutil"
const pp = Parser.prototype
// This function is used to raise exceptions on parse errors. It
// takes an offset integer (into the current `input`) to indicate
// the location of the error, attaches the position to the end
// of the error message, and then raises a `SyntaxError` with that
// message.
pp.raise = function(pos, message) {
let loc = getLineInfo(this.input, pos)
message += " (" + loc.line + ":" + loc.column + ")"
let err = new SyntaxError(message)
err.pos = pos; err.loc = loc; err.raisedAt = this.pos
throw err
}
pp.raiseRecoverable = pp.raise
pp.curPosition = function() {
if (this.options.locations) {
return new Position(this.curLine, this.pos - this.lineStart)
}
}

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@ -1,42 +0,0 @@
import {lineBreakG} from "./whitespace"
// These are used when `options.locations` is on, for the
// `startLoc` and `endLoc` properties.
export class Position {
constructor(line, col) {
this.line = line
this.column = col
}
offset(n) {
return new Position(this.line, this.column + n)
}
}
export class SourceLocation {
constructor(p, start, end) {
this.start = start
this.end = end
if (p.sourceFile !== null) this.source = p.sourceFile
}
}
// The `getLineInfo` function is mostly useful when the
// `locations` option is off (for performance reasons) and you
// want to find the line/column position for a given character
// offset. `input` should be the code string that the offset refers
// into.
export function getLineInfo(input, offset) {
for (let line = 1, cur = 0;;) {
lineBreakG.lastIndex = cur
let match = lineBreakG.exec(input)
if (match && match.index < offset) {
++line
cur = match.index + match[0].length
} else {
return new Position(line, offset - cur)
}
}
}

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@ -1,562 +0,0 @@
import {LooseParser} from "./state"
import {isDummy} from "./parseutil"
import {tokTypes as tt} from "../index"
const lp = LooseParser.prototype
lp.checkLVal = function(expr) {
if (!expr) return expr
switch (expr.type) {
case "Identifier":
case "MemberExpression":
return expr
case "ParenthesizedExpression":
expr.expression = this.checkLVal(expr.expression)
return expr
default:
return this.dummyIdent()
}
}
lp.parseExpression = function(noIn) {
let start = this.storeCurrentPos()
let expr = this.parseMaybeAssign(noIn)
if (this.tok.type === tt.comma) {
let node = this.startNodeAt(start)
node.expressions = [expr]
while (this.eat(tt.comma)) node.expressions.push(this.parseMaybeAssign(noIn))
return this.finishNode(node, "SequenceExpression")
}
return expr
}
lp.parseParenExpression = function() {
this.pushCx()
this.expect(tt.parenL)
let val = this.parseExpression()
this.popCx()
this.expect(tt.parenR)
return val
}
lp.parseMaybeAssign = function(noIn) {
if (this.toks.isContextual("yield")) {
let node = this.startNode()
this.next()
if (this.semicolon() || this.canInsertSemicolon() || (this.tok.type != tt.star && !this.tok.type.startsExpr)) {
node.delegate = false
node.argument = null
} else {
node.delegate = this.eat(tt.star)
node.argument = this.parseMaybeAssign()
}
return this.finishNode(node, "YieldExpression")
}
let start = this.storeCurrentPos()
let left = this.parseMaybeConditional(noIn)
if (this.tok.type.isAssign) {
let node = this.startNodeAt(start)
node.operator = this.tok.value
node.left = this.tok.type === tt.eq ? this.toAssignable(left) : this.checkLVal(left)
this.next()
node.right = this.parseMaybeAssign(noIn)
return this.finishNode(node, "AssignmentExpression")
}
return left
}
lp.parseMaybeConditional = function(noIn) {
let start = this.storeCurrentPos()
let expr = this.parseExprOps(noIn)
if (this.eat(tt.question)) {
let node = this.startNodeAt(start)
node.test = expr
node.consequent = this.parseMaybeAssign()
node.alternate = this.expect(tt.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent()
return this.finishNode(node, "ConditionalExpression")
}
return expr
}
lp.parseExprOps = function(noIn) {
let start = this.storeCurrentPos()
let indent = this.curIndent, line = this.curLineStart
return this.parseExprOp(this.parseMaybeUnary(false), start, -1, noIn, indent, line)
}
lp.parseExprOp = function(left, start, minPrec, noIn, indent, line) {
if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) return left
let prec = this.tok.type.binop
if (prec != null && (!noIn || this.tok.type !== tt._in)) {
if (prec > minPrec) {
let node = this.startNodeAt(start)
node.left = left
node.operator = this.tok.value
this.next()
if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) {
node.right = this.dummyIdent()
} else {
let rightStart = this.storeCurrentPos()
node.right = this.parseExprOp(this.parseMaybeUnary(false), rightStart, prec, noIn, indent, line)
}
this.finishNode(node, /&&|\|\|/.test(node.operator) ? "LogicalExpression" : "BinaryExpression")
return this.parseExprOp(node, start, minPrec, noIn, indent, line)
}
}
return left
}
lp.parseMaybeUnary = function(sawUnary) {
let start = this.storeCurrentPos(), expr
if (this.options.ecmaVersion >= 8 && this.inAsync && this.toks.isContextual("await")) {
expr = this.parseAwait()
sawUnary = true
} else if (this.tok.type.prefix) {
let node = this.startNode(), update = this.tok.type === tt.incDec
if (!update) sawUnary = true
node.operator = this.tok.value
node.prefix = true
this.next()
node.argument = this.parseMaybeUnary(true)
if (update) node.argument = this.checkLVal(node.argument)
expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression")
} else if (this.tok.type === tt.ellipsis) {
let node = this.startNode()
this.next()
node.argument = this.parseMaybeUnary(sawUnary)
expr = this.finishNode(node, "SpreadElement")
} else {
expr = this.parseExprSubscripts()
while (this.tok.type.postfix && !this.canInsertSemicolon()) {
let node = this.startNodeAt(start)
node.operator = this.tok.value
node.prefix = false
node.argument = this.checkLVal(expr)
this.next()
expr = this.finishNode(node, "UpdateExpression")
}
}
if (!sawUnary && this.eat(tt.starstar)) {
let node = this.startNodeAt(start)
node.operator = "**"
node.left = expr
node.right = this.parseMaybeUnary(false)
return this.finishNode(node, "BinaryExpression")
}
return expr
}
lp.parseExprSubscripts = function() {
let start = this.storeCurrentPos()
return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart)
}
lp.parseSubscripts = function(base, start, noCalls, startIndent, line) {
for (;;) {
if (this.curLineStart != line && this.curIndent <= startIndent && this.tokenStartsLine()) {
if (this.tok.type == tt.dot && this.curIndent == startIndent)
--startIndent
else
return base
}
let maybeAsyncArrow = base.type === "Identifier" && base.name === "async" && !this.canInsertSemicolon()
if (this.eat(tt.dot)) {
let node = this.startNodeAt(start)
node.object = base
if (this.curLineStart != line && this.curIndent <= startIndent && this.tokenStartsLine())
node.property = this.dummyIdent()
else
node.property = this.parsePropertyAccessor() || this.dummyIdent()
node.computed = false
base = this.finishNode(node, "MemberExpression")
} else if (this.tok.type == tt.bracketL) {
this.pushCx()
this.next()
let node = this.startNodeAt(start)
node.object = base
node.property = this.parseExpression()
node.computed = true
this.popCx()
this.expect(tt.bracketR)
base = this.finishNode(node, "MemberExpression")
} else if (!noCalls && this.tok.type == tt.parenL) {
let exprList = this.parseExprList(tt.parenR)
if (maybeAsyncArrow && this.eat(tt.arrow))
return this.parseArrowExpression(this.startNodeAt(start), exprList, true)
let node = this.startNodeAt(start)
node.callee = base
node.arguments = exprList
base = this.finishNode(node, "CallExpression")
} else if (this.tok.type == tt.backQuote) {
let node = this.startNodeAt(start)
node.tag = base
node.quasi = this.parseTemplate()
base = this.finishNode(node, "TaggedTemplateExpression")
} else {
return base
}
}
}
lp.parseExprAtom = function() {
let node
switch (this.tok.type) {
case tt._this:
case tt._super:
let type = this.tok.type === tt._this ? "ThisExpression" : "Super"
node = this.startNode()
this.next()
return this.finishNode(node, type)
case tt.name:
let start = this.storeCurrentPos()
let id = this.parseIdent()
let isAsync = false
if (id.name === "async" && !this.canInsertSemicolon()) {
if (this.eat(tt._function))
return this.parseFunction(this.startNodeAt(start), false, true)
if (this.tok.type === tt.name) {
id = this.parseIdent()
isAsync = true
}
}
return this.eat(tt.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id], isAsync) : id
case tt.regexp:
node = this.startNode()
let val = this.tok.value
node.regex = {pattern: val.pattern, flags: val.flags}
node.value = val.value
node.raw = this.input.slice(this.tok.start, this.tok.end)
this.next()
return this.finishNode(node, "Literal")
case tt.num: case tt.string:
node = this.startNode()
node.value = this.tok.value
node.raw = this.input.slice(this.tok.start, this.tok.end)
this.next()
return this.finishNode(node, "Literal")
case tt._null: case tt._true: case tt._false:
node = this.startNode()
node.value = this.tok.type === tt._null ? null : this.tok.type === tt._true
node.raw = this.tok.type.keyword
this.next()
return this.finishNode(node, "Literal")
case tt.parenL:
let parenStart = this.storeCurrentPos()
this.next()
let inner = this.parseExpression()
this.expect(tt.parenR)
if (this.eat(tt.arrow)) {
// (a,)=>a // SequenceExpression makes dummy in the last hole. Drop the dummy.
let params = inner.expressions || [inner]
if (params.length && isDummy(params[params.length - 1]))
params.pop()
return this.parseArrowExpression(this.startNodeAt(parenStart), params)
}
if (this.options.preserveParens) {
let par = this.startNodeAt(parenStart)
par.expression = inner
inner = this.finishNode(par, "ParenthesizedExpression")
}
return inner
case tt.bracketL:
node = this.startNode()
node.elements = this.parseExprList(tt.bracketR, true)
return this.finishNode(node, "ArrayExpression")
case tt.braceL:
return this.parseObj()
case tt._class:
return this.parseClass(false)
case tt._function:
node = this.startNode()
this.next()
return this.parseFunction(node, false)
case tt._new:
return this.parseNew()
case tt.backQuote:
return this.parseTemplate()
default:
return this.dummyIdent()
}
}
lp.parseNew = function() {
let node = this.startNode(), startIndent = this.curIndent, line = this.curLineStart
let meta = this.parseIdent(true)
if (this.options.ecmaVersion >= 6 && this.eat(tt.dot)) {
node.meta = meta
node.property = this.parseIdent(true)
return this.finishNode(node, "MetaProperty")
}
let start = this.storeCurrentPos()
node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line)
if (this.tok.type == tt.parenL) {
node.arguments = this.parseExprList(tt.parenR)
} else {
node.arguments = []
}
return this.finishNode(node, "NewExpression")
}
lp.parseTemplateElement = function() {
let elem = this.startNode()
elem.value = {
raw: this.input.slice(this.tok.start, this.tok.end).replace(/\r\n?/g, '\n'),
cooked: this.tok.value
}
this.next()
elem.tail = this.tok.type === tt.backQuote
return this.finishNode(elem, "TemplateElement")
}
lp.parseTemplate = function() {
let node = this.startNode()
this.next()
node.expressions = []
let curElt = this.parseTemplateElement()
node.quasis = [curElt]
while (!curElt.tail) {
this.next()
node.expressions.push(this.parseExpression())
if (this.expect(tt.braceR)) {
curElt = this.parseTemplateElement()
} else {
curElt = this.startNode()
curElt.value = {cooked: '', raw: ''}
curElt.tail = true
this.finishNode(curElt, "TemplateElement")
}
node.quasis.push(curElt)
}
this.expect(tt.backQuote)
return this.finishNode(node, "TemplateLiteral")
}
lp.parseObj = function() {
let node = this.startNode()
node.properties = []
this.pushCx()
let indent = this.curIndent + 1, line = this.curLineStart
this.eat(tt.braceL)
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
while (!this.closes(tt.braceR, indent, line)) {
let prop = this.startNode(), isGenerator, isAsync, start
if (this.options.ecmaVersion >= 6) {
start = this.storeCurrentPos()
prop.method = false
prop.shorthand = false
isGenerator = this.eat(tt.star)
}
this.parsePropertyName(prop)
if (!prop.computed &&
prop.key.type === "Identifier" && prop.key.name === "async" && this.tok.type !== tt.parenL &&
this.tok.type !== tt.colon && !this.canInsertSemicolon()) {
this.parsePropertyName(prop)
isAsync = true
} else {
isAsync = false
}
if (isDummy(prop.key)) { if (isDummy(this.parseMaybeAssign())) this.next(); this.eat(tt.comma); continue }
if (this.eat(tt.colon)) {
prop.kind = "init"
prop.value = this.parseMaybeAssign()
} else if (this.options.ecmaVersion >= 6 && (this.tok.type === tt.parenL || this.tok.type === tt.braceL)) {
prop.kind = "init"
prop.method = true
prop.value = this.parseMethod(isGenerator, isAsync)
} else if (this.options.ecmaVersion >= 5 && prop.key.type === "Identifier" &&
!prop.computed && (prop.key.name === "get" || prop.key.name === "set") &&
(this.tok.type != tt.comma && this.tok.type != tt.braceR)) {
prop.kind = prop.key.name
this.parsePropertyName(prop)
prop.value = this.parseMethod(false)
} else {
prop.kind = "init"
if (this.options.ecmaVersion >= 6) {
if (this.eat(tt.eq)) {
let assign = this.startNodeAt(start)
assign.operator = "="
assign.left = prop.key
assign.right = this.parseMaybeAssign()
prop.value = this.finishNode(assign, "AssignmentExpression")
} else {
prop.value = prop.key
}
} else {
prop.value = this.dummyIdent()
}
prop.shorthand = true
}
node.properties.push(this.finishNode(prop, "Property"))
this.eat(tt.comma)
}
this.popCx()
if (!this.eat(tt.braceR)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start
if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
return this.finishNode(node, "ObjectExpression")
}
lp.parsePropertyName = function(prop) {
if (this.options.ecmaVersion >= 6) {
if (this.eat(tt.bracketL)) {
prop.computed = true
prop.key = this.parseExpression()
this.expect(tt.bracketR)
return
} else {
prop.computed = false
}
}
let key = (this.tok.type === tt.num || this.tok.type === tt.string) ? this.parseExprAtom() : this.parseIdent()
prop.key = key || this.dummyIdent()
}
lp.parsePropertyAccessor = function() {
if (this.tok.type === tt.name || this.tok.type.keyword) return this.parseIdent()
}
lp.parseIdent = function() {
let name = this.tok.type === tt.name ? this.tok.value : this.tok.type.keyword
if (!name) return this.dummyIdent()
let node = this.startNode()
this.next()
node.name = name
return this.finishNode(node, "Identifier")
}
lp.initFunction = function(node) {
node.id = null
node.params = []
if (this.options.ecmaVersion >= 6) {
node.generator = false
node.expression = false
}
if (this.options.ecmaVersion >= 8)
node.async = false
}
// Convert existing expression atom to assignable pattern
// if possible.
lp.toAssignable = function(node, binding) {
if (!node || node.type == "Identifier" || (node.type == "MemberExpression" && !binding)) {
// Okay
} else if (node.type == "ParenthesizedExpression") {
node.expression = this.toAssignable(node.expression, binding)
} else if (this.options.ecmaVersion < 6) {
return this.dummyIdent()
} else if (node.type == "ObjectExpression") {
node.type = "ObjectPattern"
let props = node.properties
for (let i = 0; i < props.length; i++)
props[i].value = this.toAssignable(props[i].value, binding)
} else if (node.type == "ArrayExpression") {
node.type = "ArrayPattern"
this.toAssignableList(node.elements, binding)
} else if (node.type == "SpreadElement") {
node.type = "RestElement"
node.argument = this.toAssignable(node.argument, binding)
} else if (node.type == "AssignmentExpression") {
node.type = "AssignmentPattern"
delete node.operator
} else {
return this.dummyIdent()
}
return node
}
lp.toAssignableList = function(exprList, binding) {
for (let i = 0; i < exprList.length; i++)
exprList[i] = this.toAssignable(exprList[i], binding)
return exprList
}
lp.parseFunctionParams = function(params) {
params = this.parseExprList(tt.parenR)
return this.toAssignableList(params, true)
}
lp.parseMethod = function(isGenerator, isAsync) {
let node = this.startNode(), oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 6)
node.generator = !!isGenerator
if (this.options.ecmaVersion >= 8)
node.async = !!isAsync
this.inAsync = node.async
node.params = this.parseFunctionParams()
node.expression = this.options.ecmaVersion >= 6 && this.tok.type !== tt.braceL
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
this.inAsync = oldInAsync
return this.finishNode(node, "FunctionExpression")
}
lp.parseArrowExpression = function(node, params, isAsync) {
let oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 8)
node.async = !!isAsync
this.inAsync = node.async
node.params = this.toAssignableList(params, true)
node.expression = this.tok.type !== tt.braceL
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
this.inAsync = oldInAsync
return this.finishNode(node, "ArrowFunctionExpression")
}
lp.parseExprList = function(close, allowEmpty) {
this.pushCx()
let indent = this.curIndent, line = this.curLineStart, elts = []
this.next() // Opening bracket
while (!this.closes(close, indent + 1, line)) {
if (this.eat(tt.comma)) {
elts.push(allowEmpty ? null : this.dummyIdent())
continue
}
let elt = this.parseMaybeAssign()
if (isDummy(elt)) {
if (this.closes(close, indent, line)) break
this.next()
} else {
elts.push(elt)
}
this.eat(tt.comma)
}
this.popCx()
if (!this.eat(close)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start
if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
return elts
}
lp.parseAwait = function() {
let node = this.startNode()
this.next()
node.argument = this.parseMaybeUnary()
return this.finishNode(node, "AwaitExpression")
}

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@ -1,48 +0,0 @@
// Acorn: Loose parser
//
// This module provides an alternative parser (`parse_dammit`) that
// exposes that same interface as `parse`, but will try to parse
// anything as JavaScript, repairing syntax error the best it can.
// There are circumstances in which it will raise an error and give
// up, but they are very rare. The resulting AST will be a mostly
// valid JavaScript AST (as per the [Mozilla parser API][api], except
// that:
//
// - Return outside functions is allowed
//
// - Label consistency (no conflicts, break only to existing labels)
// is not enforced.
//
// - Bogus Identifier nodes with a name of `"✖"` are inserted whenever
// the parser got too confused to return anything meaningful.
//
// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API
//
// The expected use for this is to *first* try `acorn.parse`, and only
// if that fails switch to `parse_dammit`. The loose parser might
// parse badly indented code incorrectly, so **don't** use it as
// your default parser.
//
// Quite a lot of acorn.js is duplicated here. The alternative was to
// add a *lot* of extra cruft to that file, making it less readable
// and slower. Copying and editing the code allowed me to make
// invasive changes and simplifications without creating a complicated
// tangle.
import {addLooseExports, defaultOptions} from "../index"
import {LooseParser, pluginsLoose} from "./state"
import "./tokenize"
import "./statement"
import "./expression"
export {LooseParser, pluginsLoose} from "./state"
defaultOptions.tabSize = 4
export function parse_dammit(input, options) {
let p = new LooseParser(input, options)
p.next()
return p.parseTopLevel()
}
addLooseExports(parse_dammit, LooseParser, pluginsLoose)

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@ -1,161 +0,0 @@
import {tokenizer, SourceLocation, tokTypes as tt, Node, lineBreak, isNewLine} from "../index"
// Registered plugins
export const pluginsLoose = {}
export class LooseParser {
constructor(input, options = {}) {
this.toks = tokenizer(input, options)
this.options = this.toks.options
this.input = this.toks.input
this.tok = this.last = {type: tt.eof, start: 0, end: 0}
if (this.options.locations) {
let here = this.toks.curPosition()
this.tok.loc = new SourceLocation(this.toks, here, here)
}
this.ahead = [] // Tokens ahead
this.context = [] // Indentation contexted
this.curIndent = 0
this.curLineStart = 0
this.nextLineStart = this.lineEnd(this.curLineStart) + 1
this.inAsync = false
// Load plugins
this.options.pluginsLoose = options.pluginsLoose || {}
this.loadPlugins(this.options.pluginsLoose)
}
startNode() {
return new Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null)
}
storeCurrentPos() {
return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start
}
startNodeAt(pos) {
if (this.options.locations) {
return new Node(this.toks, pos[0], pos[1])
} else {
return new Node(this.toks, pos)
}
}
finishNode(node, type) {
node.type = type
node.end = this.last.end
if (this.options.locations)
node.loc.end = this.last.loc.end
if (this.options.ranges)
node.range[1] = this.last.end
return node
}
dummyNode(type) {
let dummy = this.startNode()
dummy.type = type
dummy.end = dummy.start
if (this.options.locations)
dummy.loc.end = dummy.loc.start
if (this.options.ranges)
dummy.range[1] = dummy.start
this.last = {type: tt.name, start: dummy.start, end: dummy.start, loc: dummy.loc}
return dummy
}
dummyIdent() {
let dummy = this.dummyNode("Identifier")
dummy.name = "✖"
return dummy
}
dummyString() {
let dummy = this.dummyNode("Literal")
dummy.value = dummy.raw = "✖"
return dummy
}
eat(type) {
if (this.tok.type === type) {
this.next()
return true
} else {
return false
}
}
isContextual(name) {
return this.tok.type === tt.name && this.tok.value === name
}
eatContextual(name) {
return this.tok.value === name && this.eat(tt.name)
}
canInsertSemicolon() {
return this.tok.type === tt.eof || this.tok.type === tt.braceR ||
lineBreak.test(this.input.slice(this.last.end, this.tok.start))
}
semicolon() {
return this.eat(tt.semi)
}
expect(type) {
if (this.eat(type)) return true
for (let i = 1; i <= 2; i++) {
if (this.lookAhead(i).type == type) {
for (let j = 0; j < i; j++) this.next()
return true
}
}
}
pushCx() {
this.context.push(this.curIndent)
}
popCx() {
this.curIndent = this.context.pop()
}
lineEnd(pos) {
while (pos < this.input.length && !isNewLine(this.input.charCodeAt(pos))) ++pos
return pos
}
indentationAfter(pos) {
for (let count = 0;; ++pos) {
let ch = this.input.charCodeAt(pos)
if (ch === 32) ++count
else if (ch === 9) count += this.options.tabSize
else return count
}
}
closes(closeTok, indent, line, blockHeuristic) {
if (this.tok.type === closeTok || this.tok.type === tt.eof) return true
return line != this.curLineStart && this.curIndent < indent && this.tokenStartsLine() &&
(!blockHeuristic || this.nextLineStart >= this.input.length ||
this.indentationAfter(this.nextLineStart) < indent)
}
tokenStartsLine() {
for (let p = this.tok.start - 1; p >= this.curLineStart; --p) {
let ch = this.input.charCodeAt(p)
if (ch !== 9 && ch !== 32) return false
}
return true
}
extend(name, f) {
this[name] = f(this[name])
}
loadPlugins(pluginConfigs) {
for (let name in pluginConfigs) {
let plugin = pluginsLoose[name]
if (!plugin) throw new Error("Plugin '" + name + "' not found")
plugin(this, pluginConfigs[name])
}
}
}

View File

@ -1,450 +0,0 @@
import {LooseParser} from "./state"
import {isDummy} from "./parseutil"
import {getLineInfo, tokTypes as tt} from "../index"
const lp = LooseParser.prototype
lp.parseTopLevel = function() {
let node = this.startNodeAt(this.options.locations ? [0, getLineInfo(this.input, 0)] : 0)
node.body = []
while (this.tok.type !== tt.eof) node.body.push(this.parseStatement())
this.last = this.tok
if (this.options.ecmaVersion >= 6) {
node.sourceType = this.options.sourceType
}
return this.finishNode(node, "Program")
}
lp.parseStatement = function() {
let starttype = this.tok.type, node = this.startNode(), kind
if (this.toks.isLet()) {
starttype = tt._var
kind = "let"
}
switch (starttype) {
case tt._break: case tt._continue:
this.next()
let isBreak = starttype === tt._break
if (this.semicolon() || this.canInsertSemicolon()) {
node.label = null
} else {
node.label = this.tok.type === tt.name ? this.parseIdent() : null
this.semicolon()
}
return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
case tt._debugger:
this.next()
this.semicolon()
return this.finishNode(node, "DebuggerStatement")
case tt._do:
this.next()
node.body = this.parseStatement()
node.test = this.eat(tt._while) ? this.parseParenExpression() : this.dummyIdent()
this.semicolon()
return this.finishNode(node, "DoWhileStatement")
case tt._for:
this.next()
this.pushCx()
this.expect(tt.parenL)
if (this.tok.type === tt.semi) return this.parseFor(node, null)
let isLet = this.toks.isLet()
if (isLet || this.tok.type === tt._var || this.tok.type === tt._const) {
let init = this.parseVar(true, isLet ? "let" : this.tok.value)
if (init.declarations.length === 1 && (this.tok.type === tt._in || this.isContextual("of"))) {
return this.parseForIn(node, init)
}
return this.parseFor(node, init)
}
let init = this.parseExpression(true)
if (this.tok.type === tt._in || this.isContextual("of"))
return this.parseForIn(node, this.toAssignable(init))
return this.parseFor(node, init)
case tt._function:
this.next()
return this.parseFunction(node, true)
case tt._if:
this.next()
node.test = this.parseParenExpression()
node.consequent = this.parseStatement()
node.alternate = this.eat(tt._else) ? this.parseStatement() : null
return this.finishNode(node, "IfStatement")
case tt._return:
this.next()
if (this.eat(tt.semi) || this.canInsertSemicolon()) node.argument = null
else { node.argument = this.parseExpression(); this.semicolon() }
return this.finishNode(node, "ReturnStatement")
case tt._switch:
let blockIndent = this.curIndent, line = this.curLineStart
this.next()
node.discriminant = this.parseParenExpression()
node.cases = []
this.pushCx()
this.expect(tt.braceL)
let cur
while (!this.closes(tt.braceR, blockIndent, line, true)) {
if (this.tok.type === tt._case || this.tok.type === tt._default) {
let isCase = this.tok.type === tt._case
if (cur) this.finishNode(cur, "SwitchCase")
node.cases.push(cur = this.startNode())
cur.consequent = []
this.next()
if (isCase) cur.test = this.parseExpression()
else cur.test = null
this.expect(tt.colon)
} else {
if (!cur) {
node.cases.push(cur = this.startNode())
cur.consequent = []
cur.test = null
}
cur.consequent.push(this.parseStatement())
}
}
if (cur) this.finishNode(cur, "SwitchCase")
this.popCx()
this.eat(tt.braceR)
return this.finishNode(node, "SwitchStatement")
case tt._throw:
this.next()
node.argument = this.parseExpression()
this.semicolon()
return this.finishNode(node, "ThrowStatement")
case tt._try:
this.next()
node.block = this.parseBlock()
node.handler = null
if (this.tok.type === tt._catch) {
let clause = this.startNode()
this.next()
this.expect(tt.parenL)
clause.param = this.toAssignable(this.parseExprAtom(), true)
this.expect(tt.parenR)
clause.body = this.parseBlock()
node.handler = this.finishNode(clause, "CatchClause")
}
node.finalizer = this.eat(tt._finally) ? this.parseBlock() : null
if (!node.handler && !node.finalizer) return node.block
return this.finishNode(node, "TryStatement")
case tt._var:
case tt._const:
return this.parseVar(false, kind || this.tok.value)
case tt._while:
this.next()
node.test = this.parseParenExpression()
node.body = this.parseStatement()
return this.finishNode(node, "WhileStatement")
case tt._with:
this.next()
node.object = this.parseParenExpression()
node.body = this.parseStatement()
return this.finishNode(node, "WithStatement")
case tt.braceL:
return this.parseBlock()
case tt.semi:
this.next()
return this.finishNode(node, "EmptyStatement")
case tt._class:
return this.parseClass(true)
case tt._import:
return this.parseImport()
case tt._export:
return this.parseExport()
default:
if (this.toks.isAsyncFunction()) {
this.next()
this.next()
return this.parseFunction(node, true, true)
}
let expr = this.parseExpression()
if (isDummy(expr)) {
this.next()
if (this.tok.type === tt.eof) return this.finishNode(node, "EmptyStatement")
return this.parseStatement()
} else if (starttype === tt.name && expr.type === "Identifier" && this.eat(tt.colon)) {
node.body = this.parseStatement()
node.label = expr
return this.finishNode(node, "LabeledStatement")
} else {
node.expression = expr
this.semicolon()
return this.finishNode(node, "ExpressionStatement")
}
}
}
lp.parseBlock = function() {
let node = this.startNode()
this.pushCx()
this.expect(tt.braceL)
let blockIndent = this.curIndent, line = this.curLineStart
node.body = []
while (!this.closes(tt.braceR, blockIndent, line, true))
node.body.push(this.parseStatement())
this.popCx()
this.eat(tt.braceR)
return this.finishNode(node, "BlockStatement")
}
lp.parseFor = function(node, init) {
node.init = init
node.test = node.update = null
if (this.eat(tt.semi) && this.tok.type !== tt.semi) node.test = this.parseExpression()
if (this.eat(tt.semi) && this.tok.type !== tt.parenR) node.update = this.parseExpression()
this.popCx()
this.expect(tt.parenR)
node.body = this.parseStatement()
return this.finishNode(node, "ForStatement")
}
lp.parseForIn = function(node, init) {
let type = this.tok.type === tt._in ? "ForInStatement" : "ForOfStatement"
this.next()
node.left = init
node.right = this.parseExpression()
this.popCx()
this.expect(tt.parenR)
node.body = this.parseStatement()
return this.finishNode(node, type)
}
lp.parseVar = function(noIn, kind) {
let node = this.startNode()
node.kind = kind
this.next()
node.declarations = []
do {
let decl = this.startNode()
decl.id = this.options.ecmaVersion >= 6 ? this.toAssignable(this.parseExprAtom(), true) : this.parseIdent()
decl.init = this.eat(tt.eq) ? this.parseMaybeAssign(noIn) : null
node.declarations.push(this.finishNode(decl, "VariableDeclarator"))
} while (this.eat(tt.comma))
if (!node.declarations.length) {
let decl = this.startNode()
decl.id = this.dummyIdent()
node.declarations.push(this.finishNode(decl, "VariableDeclarator"))
}
if (!noIn) this.semicolon()
return this.finishNode(node, "VariableDeclaration")
}
lp.parseClass = function(isStatement) {
let node = this.startNode()
this.next()
if (isStatement == null) isStatement = this.tok.type === tt.name
if (this.tok.type === tt.name) node.id = this.parseIdent()
else if (isStatement) node.id = this.dummyIdent()
else node.id = null
node.superClass = this.eat(tt._extends) ? this.parseExpression() : null
node.body = this.startNode()
node.body.body = []
this.pushCx()
let indent = this.curIndent + 1, line = this.curLineStart
this.eat(tt.braceL)
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
while (!this.closes(tt.braceR, indent, line)) {
if (this.semicolon()) continue
let method = this.startNode(), isGenerator, isAsync
if (this.options.ecmaVersion >= 6) {
method.static = false
isGenerator = this.eat(tt.star)
}
this.parsePropertyName(method)
if (isDummy(method.key)) { if (isDummy(this.parseMaybeAssign())) this.next(); this.eat(tt.comma); continue }
if (method.key.type === "Identifier" && !method.computed && method.key.name === "static" &&
(this.tok.type != tt.parenL && this.tok.type != tt.braceL)) {
method.static = true
isGenerator = this.eat(tt.star)
this.parsePropertyName(method)
} else {
method.static = false
}
if (!method.computed &&
method.key.type === "Identifier" && method.key.name === "async" && this.tok.type !== tt.parenL &&
!this.canInsertSemicolon()) {
this.parsePropertyName(method)
isAsync = true
} else {
isAsync = false
}
if (this.options.ecmaVersion >= 5 && method.key.type === "Identifier" &&
!method.computed && (method.key.name === "get" || method.key.name === "set") &&
this.tok.type !== tt.parenL && this.tok.type !== tt.braceL) {
method.kind = method.key.name
this.parsePropertyName(method)
method.value = this.parseMethod(false)
} else {
if (!method.computed && !method.static && !isGenerator && !isAsync && (
method.key.type === "Identifier" && method.key.name === "constructor" ||
method.key.type === "Literal" && method.key.value === "constructor")) {
method.kind = "constructor"
} else {
method.kind = "method"
}
method.value = this.parseMethod(isGenerator, isAsync)
}
node.body.body.push(this.finishNode(method, "MethodDefinition"))
}
this.popCx()
if (!this.eat(tt.braceR)) {
// If there is no closing brace, make the node span to the start
// of the next token (this is useful for Tern)
this.last.end = this.tok.start
if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
this.semicolon()
this.finishNode(node.body, "ClassBody")
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
}
lp.parseFunction = function(node, isStatement, isAsync) {
let oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 6) {
node.generator = this.eat(tt.star)
}
if (this.options.ecmaVersion >= 8) {
node.async = !!isAsync
}
if (isStatement == null) isStatement = this.tok.type === tt.name
if (this.tok.type === tt.name) node.id = this.parseIdent()
else if (isStatement) node.id = this.dummyIdent()
this.inAsync = node.async
node.params = this.parseFunctionParams()
node.body = this.parseBlock()
this.inAsync = oldInAsync
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")
}
lp.parseExport = function() {
let node = this.startNode()
this.next()
if (this.eat(tt.star)) {
node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString()
return this.finishNode(node, "ExportAllDeclaration")
}
if (this.eat(tt._default)) {
// export default (function foo() {}) // This is FunctionExpression.
let isAsync
if (this.tok.type === tt._function || (isAsync = this.toks.isAsyncFunction())) {
let fNode = this.startNode()
this.next()
if (isAsync) this.next()
node.declaration = this.parseFunction(fNode, null, isAsync)
} else if (this.tok.type === tt._class) {
node.declaration = this.parseClass(null)
} else {
node.declaration = this.parseMaybeAssign()
this.semicolon()
}
return this.finishNode(node, "ExportDefaultDeclaration")
}
if (this.tok.type.keyword || this.toks.isLet() || this.toks.isAsyncFunction()) {
node.declaration = this.parseStatement()
node.specifiers = []
node.source = null
} else {
node.declaration = null
node.specifiers = this.parseExportSpecifierList()
node.source = this.eatContextual("from") ? this.parseExprAtom() : null
this.semicolon()
}
return this.finishNode(node, "ExportNamedDeclaration")
}
lp.parseImport = function() {
let node = this.startNode()
this.next()
if (this.tok.type === tt.string) {
node.specifiers = []
node.source = this.parseExprAtom()
node.kind = ''
} else {
let elt
if (this.tok.type === tt.name && this.tok.value !== "from") {
elt = this.startNode()
elt.local = this.parseIdent()
this.finishNode(elt, "ImportDefaultSpecifier")
this.eat(tt.comma)
}
node.specifiers = this.parseImportSpecifierList()
node.source = this.eatContextual("from") && this.tok.type == tt.string ? this.parseExprAtom() : this.dummyString()
if (elt) node.specifiers.unshift(elt)
}
this.semicolon()
return this.finishNode(node, "ImportDeclaration")
}
lp.parseImportSpecifierList = function() {
let elts = []
if (this.tok.type === tt.star) {
let elt = this.startNode()
this.next()
elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent()
elts.push(this.finishNode(elt, "ImportNamespaceSpecifier"))
} else {
let indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
this.pushCx()
this.eat(tt.braceL)
if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
while (!this.closes(tt.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
let elt = this.startNode()
if (this.eat(tt.star)) {
elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent()
this.finishNode(elt, "ImportNamespaceSpecifier")
} else {
if (this.isContextual("from")) break
elt.imported = this.parseIdent()
if (isDummy(elt.imported)) break
elt.local = this.eatContextual("as") ? this.parseIdent() : elt.imported
this.finishNode(elt, "ImportSpecifier")
}
elts.push(elt)
this.eat(tt.comma)
}
this.eat(tt.braceR)
this.popCx()
}
return elts
}
lp.parseExportSpecifierList = function() {
let elts = []
let indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
this.pushCx()
this.eat(tt.braceL)
if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
while (!this.closes(tt.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
if (this.isContextual("from")) break
let elt = this.startNode()
elt.local = this.parseIdent()
if (isDummy(elt.local)) break
elt.exported = this.eatContextual("as") ? this.parseIdent() : elt.local
this.finishNode(elt, "ExportSpecifier")
elts.push(elt)
this.eat(tt.comma)
}
this.eat(tt.braceR)
this.popCx()
return elts
}

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