From 459c9bbc223c4d95fa1c11dd5eb359abd6e3600d Mon Sep 17 00:00:00 2001 From: Titus Wormer Date: Thu, 26 Mar 2015 13:32:20 +0100 Subject: [PATCH] 0.1.0 --- .eslintrc | 9 + .gitignore | 8 + .jscs.json | 143 + .mdastignore | 9 + .mdastrc | 10 + .npmignore | 15 + .travis.yml | 16 + History.md | 1 + LICENSE | 22 + Readme.md | 116 + bower.json | 35 + component.json | 17 + example.js | 24 + index.js | 107 + mdast-yaml.js | 7931 +++++++++++++++++++++++++++++++++++++++++++++ mdast-yaml.min.js | 1 + package.json | 57 + test/index.js | 146 + 18 files changed, 8667 insertions(+) create mode 100644 .eslintrc create mode 100644 .gitignore create mode 100644 .jscs.json create mode 100644 .mdastignore create mode 100644 .mdastrc create mode 100644 .npmignore create mode 100644 .travis.yml create mode 100644 History.md create mode 100644 LICENSE create mode 100644 Readme.md create mode 100644 bower.json create mode 100644 component.json create mode 100644 example.js create mode 100644 index.js create mode 100644 mdast-yaml.js create mode 100644 mdast-yaml.min.js create mode 100644 package.json create mode 100644 test/index.js diff --git a/.eslintrc b/.eslintrc new file mode 100644 index 0000000..7586723 --- /dev/null +++ b/.eslintrc @@ -0,0 +1,9 @@ +{ + "env": { + "node": true, + "browser": true + }, + "rules": { + "quotes": [2, "single"] + } +} diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..f41859a --- /dev/null +++ b/.gitignore @@ -0,0 +1,8 @@ +.DS_Store +*.log +bower_components/ +build/ +components/ +coverage/ +node_modules/ +build.js diff --git a/.jscs.json b/.jscs.json new file mode 100644 index 0000000..7345bfb --- /dev/null +++ b/.jscs.json @@ -0,0 +1,143 @@ +{ + "plugins": [ + "jscs-jsdoc" + ], + "jsDoc": { + "checkAnnotations": "jsdoc3", + "checkParamNames": true, + "requireParamTypes": true, + "checkRedundantParams": true, + "checkReturnTypes": true, + "checkRedundantReturns": true, + "requireReturnTypes": true, + "checkTypes": "strictNativeCase", + "checkRedundantAccess": true, + "enforceExistence": true, + "requireHyphenBeforeDescription": true + }, + "requireCurlyBraces": [ + "if", + "else", + "for", + "while", + "do", + "try", + "catch" + ], + "requireSpaceAfterKeywords": [ + "if", + "else", + "for", + "while", + "do", + "switch", + "return", + "try", + "catch" + ], + "requireSpaceBeforeBlockStatements": true, + "requireParenthesesAroundIIFE": true, + "requireSpacesInConditionalExpression": true, + "requireSpacesInAnonymousFunctionExpression": { + "beforeOpeningRoundBrace": true, + "beforeOpeningCurlyBrace": true + }, + "requireSpacesInNamedFunctionExpression": { + "beforeOpeningRoundBrace": true, + "beforeOpeningCurlyBrace": true + }, + "requireSpacesInFunctionExpression": { + "beforeOpeningCurlyBrace": true + }, + "requireBlocksOnNewline": true, + "disallowPaddingNewlinesInBlocks": true, + "disallowEmptyBlocks": true, + "disallowSpacesInsideObjectBrackets": true, + "disallowSpacesInsideArrayBrackets": true, + "disallowSpacesInsideParentheses": true, + "requireSpacesInsideObjectBrackets": "all", + "disallowDanglingUnderscores": true, + "disallowSpaceAfterObjectKeys": true, + "requireCommaBeforeLineBreak": true, + "requireOperatorBeforeLineBreak": [ + "?", + "+", + "-", + "/", + "*", + "=", + "==", + "===", + "!=", + "!==", + ">", + ">=", + "<", + "<=" + ], + "requireSpaceBeforeBinaryOperators": [ + "+", + "-", + "/", + "*", + "=", + "==", + "===", + "!=", + "!==" + ], + "requireSpaceAfterBinaryOperators": [ + "+", + "-", + "/", + "*", + "=", + "==", + "===", + "!=", + "!==" + ], + "disallowSpaceAfterPrefixUnaryOperators": [ + "++", + "--", + "+", + "-", + "~", + "!" + ], + "disallowSpaceBeforePostfixUnaryOperators": [ + "++", + "--" + ], + "disallowImplicitTypeConversion": [ + "numeric", + "boolean", + "binary", + "string" + ], + "requireCamelCaseOrUpperCaseIdentifiers": true, + "disallowKeywords": [ + "with" + ], + "disallowMultipleLineStrings": true, + "disallowMultipleLineBreaks": true, + "validateLineBreaks": "LF", + "validateQuoteMarks": "'", + "disallowMixedSpacesAndTabs": true, + "disallowTrailingWhitespace": true, + "disallowTrailingComma": true, + "disallowKeywordsOnNewLine": [ + "else" + ], + "requireLineFeedAtFileEnd": true, + "maximumLineLength": 78, + "requireCapitalizedConstructors": true, + "safeContextKeyword": "self", + "requireDotNotation": true, + "disallowYodaConditions": true, + "validateJSDoc": { + "checkParamNames": true, + "checkRedundantParams": true, + "requireParamTypes": true + } +} diff --git a/.mdastignore b/.mdastignore new file mode 100644 index 0000000..3e33dac --- /dev/null +++ b/.mdastignore @@ -0,0 +1,9 @@ +# Dependencies. +bower_components/ +components/ + +# Uses different styling, so processed separately. +History.md + +# Make sure the fixtures do not get overwritten. +test/ diff --git a/.mdastrc b/.mdastrc new file mode 100644 index 0000000..a016ad1 --- /dev/null +++ b/.mdastrc @@ -0,0 +1,10 @@ +{ + "plugins": [ + "mdast-github", + "mdast-toc", + "mdast-usage" + ], + "settings": { + "bullet": "*" + } +} \ No newline at end of file diff --git a/.npmignore b/.npmignore new file mode 100644 index 0000000..eb41436 --- /dev/null +++ b/.npmignore @@ -0,0 +1,15 @@ +.* +*.log +bower_components/ +build/ +components/ +coverage/ +node_modules/ +test/ +build.js +example.js +mdast-yaml.js +mdast-yaml.min.js +bower.json +component.json +History.md diff --git a/.travis.yml b/.travis.yml new file mode 100644 index 0000000..3440d17 --- /dev/null +++ b/.travis.yml @@ -0,0 +1,16 @@ +language: node_js +script: npm run-script test-travis +node_js: +- '0.10' +- '0.11' +- '0.12' +- iojs +after_script: npm install coveralls@2.10.0 && cat ./coverage/lcov.info | coveralls +sudo: false +deploy: + provider: npm + email: tituswormer@gmail.com + api_key: + secure: ft0F683bsr7L+JcyHpVrM7AoXFSz6XflUh7kqsZWIBvidf7O/x7C8NGugbPhOLUmlZtP+wfsYhr8EkCxw42u7tFC1QgzAnEvIPEPYS5CuahdUKfE8mQrDUrW1MmSbf9MvPAuIRLjLr1a9buAZ0s1gDcYFLH07yL34HJ40bSN9d4= + on: + repo: wooorm/mdast-yaml diff --git a/History.md b/History.md new file mode 100644 index 0000000..8b13789 --- /dev/null +++ b/History.md @@ -0,0 +1 @@ + diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..32e7a3d --- /dev/null +++ b/LICENSE @@ -0,0 +1,22 @@ +(The MIT License) + +Copyright (c) 2015 Titus Wormer + +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. diff --git a/Readme.md b/Readme.md new file mode 100644 index 0000000..834653d --- /dev/null +++ b/Readme.md @@ -0,0 +1,116 @@ +# mdast-yaml [![Build Status](https://img.shields.io/travis/wooorm/mdast-yaml.svg?style=flat)](https://travis-ci.org/wooorm/mdast-yaml) [![Coverage Status](https://img.shields.io/coveralls/wooorm/mdast-yaml.svg?style=flat)](https://coveralls.io/r/wooorm/mdast-yaml?branch=master) + +Parse and stringify YAML code blocks in **mdast**. + +Supports IE9+ ([mdn](https://developer.mozilla.org/JavaScript/Reference/Global_Objects/Object/defineProperty), [Kangax](http://kangax.github.io/compat-table/es5/#Object.defineProperty)). + +## Installation + +[npm](https://docs.npmjs.com/cli/install) + +```bash +$ npm install mdast-yaml +``` + +[Component.js](https://github.com/componentjs/component) + +```bash +$ component install wooorm/mdast-yaml +``` + +[Bower](http://bower.io/#install-packages) + +```bash +$ bower install mdast-yaml +``` + +[Duo](http://duojs.org/#getting-started) + +```javascript +var yaml = require('wooorm/mdast-yaml'); +``` + +UMD: globals, AMD, and CommonJS ([uncompressed](mdast-yaml.js) and [compressed](mdast-yaml.min.js)): + +```html + + + +``` + +## Table of Contents + +* [Usage](#usage) +* [API](#api) + * [mdast.use(yaml, options)](#mdastuseyaml-options) +* [License](#license) + +## Usage + +```javascript +var yaml = require('mdast-yaml'); +var mdast = require('mdast').use(yaml); +var input = [ + '---', + '"layout": "post"', + '"title": \'Blogging Like a Hacker\'', + '---', + '', + '# A header!', + '' +].join('\n'); +var tree = mdast.parse(input); +``` + +The `yaml` node now has a `yaml` property. + +```javascript +var data = tree.children[0].yaml; +``` + +```json +{ + "layout": "post", + "title": "Blogging Like a Hacker" +} +``` + +Stringifying the document (note the formatting) yields: + +```javascript +var doc = mdast.stringify(tree); +``` + +```markdown +--- +layout: post +title: Blogging Like a Hacker +--- + +# A header! +``` + +## API + +### [mdast](https://github.com/wooorm/mdast#api).[use](https://github.com/wooorm/mdast#mdastuseplugin-options)(yaml, options) + +Adds a `yaml` property to [**YAML**](https://github.com/wooorm/mdast/blob/master/doc/Nodes.md#yaml) nodes. + +**Signatures** + +* `mdast = mdast.use(yaml, options?)`. + +**Parameters** + +* `yaml` — This plugin; +* `options` (`Object?`) — Settings: + * `library` (`Object?`, default: [`nodeca/js-yaml`](https://github.com/nodeca/js-yaml)); + * `parse` (`string?`, default [`"safeLoad"`](https://github.com/nodeca/js-yaml#safeload-string---options-)); + * `stringify` (`string?`, default [`"safeDump"`](https://github.com/nodeca/js-yaml#safedump-object---options-)); + * `prettify` (`boolean?`, default: `true`) — When true, the node’s content will be overwritten by the result of `library[stringify](node.yaml)`. + +## License + +[MIT](LICENSE) © [Titus Wormer](http://wooorm.com) diff --git a/bower.json b/bower.json new file mode 100644 index 0000000..d80c8ec --- /dev/null +++ b/bower.json @@ -0,0 +1,35 @@ +{ + "name": "mdast-yaml", + "main": "mdast-yaml.js", + "description": "Parse and stringify YAML code blocks in mdast", + "license": "MIT", + "keywords": [ + "yaml", + "parse", + "parser", + "serializer", + "mdast" + ], + "repository": { + "type": "git", + "url": "https://github.com/wooorm/mdast-yaml.git" + }, + "authors": [ + "Titus Wormer " + ], + "ignore": [ + ".*", + "*.log", + "*.md", + "build/", + "components/", + "coverage/", + "node_modules/", + "test/", + "build.js", + "example.js", + "index.js", + "component.json", + "package.json" + ] +} diff --git a/component.json b/component.json new file mode 100644 index 0000000..ad2788b --- /dev/null +++ b/component.json @@ -0,0 +1,17 @@ +{ + "name": "mdast-yaml", + "version": "0.1.0", + "description": "Parse and stringify YAML code blocks in mdast", + "license": "MIT", + "keywords": [ + "yaml", + "parse", + "parser", + "serializer", + "mdast" + ], + "repository": "wooorm/mdast-yaml", + "scripts": [ + "mdast-yaml.js" + ] +} diff --git a/example.js b/example.js new file mode 100644 index 0000000..83bbdae --- /dev/null +++ b/example.js @@ -0,0 +1,24 @@ +var yaml = require('./index.js'); +var mdast = require('mdast').use(yaml); + +var input = [ + '---', + '"layout": "post"', + '"title": \'Blogging Like a Hacker\'', + '---', + '', + '# A header!', + '' +].join('\n'); + +var tree = mdast.parse(input); + +// The `yaml` node now has a `yaml` property. +var data = tree.children[0].yaml; + +console.log('json', JSON.stringify(data, 0, 2)); + +// Stringifying the document (note the formatting) yields: +var doc = mdast.stringify(tree); + +console.log('markdown', doc); diff --git a/index.js b/index.js new file mode 100644 index 0000000..5db11dd --- /dev/null +++ b/index.js @@ -0,0 +1,107 @@ +'use strict'; + +/* + * Dependencies. + */ + +var jsYAML = null; + +try { + jsYAML = require('js-yaml'); +} catch (exception) {} + +/** + * Remove trailing newline. + * + * @param {string} value + * @return {string} + */ +function removeLastLine(value) { + return value && value.charAt(value.length === '\n') ? + value.slice(0, -1) : + value || ''; +} + +/** + * Parse factory. + * + * @param {Function} tokenize - Previous parser. + * @param {Object} settings + */ +function parse(tokenize, settings) { + var parser = settings.library || jsYAML; + var method = settings.parse || 'safeLoad'; + + /** + * Parse YAML, if available, using the bound + * library and method. + * + * @param {function(string)} eat + * @param {string} $0 - Whole value. + * @param {string} $1 - YAML. + */ + return function (eat, $0, $1) { + var data = parser[method]($1 || '') || ''; + var node = this.renderRaw('yaml', removeLastLine($1)); + + Object.defineProperty(node, 'yaml', { + 'configurable': true, + 'writable': true, + 'enumerable': false, + 'value': data + }); + + eat($0)(node); + }; +} + +/** + * Stringify factory. + * + * @param {Function} compile - Previous compiler. + * @param {Object} settings + */ +function stringify(compile, settings) { + var stringifier = settings.library || jsYAML; + var method = settings.stringify || 'safeDump'; + + if (settings.prettify === false) { + return compile; + } + + /** + * Stringify YAML, if available, using the bound + * library and method. + * + * @param {Object} node + * @return {string} + */ + return function (node) { + if (node.yaml) { + node.value = removeLastLine(stringifier[method](node.yaml)); + } + + return compile.apply(this, arguments); + }; +} + +/** + * Modify mdast to parse/stringify YAML. + * + * @param {MDAST} mdast + * @param {Object?} options + */ +function attacher(mdast, options) { + var tokenizers = mdast.Parser.prototype.blockTokenizers; + var stringifiers = mdast.Compiler.prototype; + var settings = options || {}; + + tokenizers.yamlFrontMatter = parse(tokenizers.yamlFrontMatter, settings); + stringifiers.yaml = stringify(stringifiers.yaml, settings); +} + +/* + * Expose. + */ + +module.exports = attacher; diff --git a/mdast-yaml.js b/mdast-yaml.js new file mode 100644 index 0000000..9c3c23d --- /dev/null +++ b/mdast-yaml.js @@ -0,0 +1,7931 @@ +(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.mdastYAML = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o */ +var CHAR_QUESTION = 0x3F; /* ? */ +var CHAR_COMMERCIAL_AT = 0x40; /* @ */ +var CHAR_LEFT_SQUARE_BRACKET = 0x5B; /* [ */ +var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */ +var CHAR_GRAVE_ACCENT = 0x60; /* ` */ +var CHAR_LEFT_CURLY_BRACKET = 0x7B; /* { */ +var CHAR_VERTICAL_LINE = 0x7C; /* | */ +var CHAR_RIGHT_CURLY_BRACKET = 0x7D; /* } */ + + +var ESCAPE_SEQUENCES = {}; + +ESCAPE_SEQUENCES[0x00] = '\\0'; +ESCAPE_SEQUENCES[0x07] = '\\a'; +ESCAPE_SEQUENCES[0x08] = '\\b'; +ESCAPE_SEQUENCES[0x09] = '\\t'; +ESCAPE_SEQUENCES[0x0A] = '\\n'; +ESCAPE_SEQUENCES[0x0B] = '\\v'; +ESCAPE_SEQUENCES[0x0C] = '\\f'; +ESCAPE_SEQUENCES[0x0D] = '\\r'; +ESCAPE_SEQUENCES[0x1B] = '\\e'; +ESCAPE_SEQUENCES[0x22] = '\\"'; +ESCAPE_SEQUENCES[0x5C] = '\\\\'; +ESCAPE_SEQUENCES[0x85] = '\\N'; +ESCAPE_SEQUENCES[0xA0] = '\\_'; +ESCAPE_SEQUENCES[0x2028] = '\\L'; +ESCAPE_SEQUENCES[0x2029] = '\\P'; + + +var DEPRECATED_BOOLEANS_SYNTAX = [ + 'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON', + 'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF' +]; + + +function compileStyleMap(schema, map) { + var result, keys, index, length, tag, style, type; + + if (null === map) { + return {}; + } + + result = {}; + keys = Object.keys(map); + + for (index = 0, length = keys.length; index < length; index += 1) { + tag = keys[index]; + style = String(map[tag]); + + if ('!!' === tag.slice(0, 2)) { + tag = 'tag:yaml.org,2002:' + tag.slice(2); + } + + type = schema.compiledTypeMap[tag]; + + if (type && _hasOwnProperty.call(type.styleAliases, style)) { + style = type.styleAliases[style]; + } + + result[tag] = style; + } + + return result; +} + + +function encodeHex(character) { + var string, handle, length; + + string = character.toString(16).toUpperCase(); + + if (character <= 0xFF) { + handle = 'x'; + length = 2; + } else if (character <= 0xFFFF) { + handle = 'u'; + length = 4; + } else if (character <= 0xFFFFFFFF) { + handle = 'U'; + length = 8; + } else { + throw new YAMLException('code point within a string may not be greater than 0xFFFFFFFF'); + } + + return '\\' + handle + common.repeat('0', length - string.length) + string; +} + + +function State(options) { + this.schema = options['schema'] || DEFAULT_FULL_SCHEMA; + this.indent = Math.max(1, (options['indent'] || 2)); + this.skipInvalid = options['skipInvalid'] || false; + this.flowLevel = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']); + this.styleMap = compileStyleMap(this.schema, options['styles'] || null); + + this.implicitTypes = this.schema.compiledImplicit; + this.explicitTypes = this.schema.compiledExplicit; + + this.tag = null; + this.result = ''; + + this.duplicates = []; + this.usedDuplicates = null; +} + + +function generateNextLine(state, level) { + return '\n' + common.repeat(' ', state.indent * level); +} + +function testImplicitResolving(state, str) { + var index, length, type; + + for (index = 0, length = state.implicitTypes.length; index < length; index += 1) { + type = state.implicitTypes[index]; + + if (type.resolve(str)) { + return true; + } + } + + return false; +} + +function writeScalar(state, object) { + var isQuoted, checkpoint, position, length, character, first; + + state.dump = ''; + isQuoted = false; + checkpoint = 0; + first = object.charCodeAt(0) || 0; + + if (-1 !== DEPRECATED_BOOLEANS_SYNTAX.indexOf(object)) { + // Ensure compatibility with YAML 1.0/1.1 loaders. + isQuoted = true; + } else if (0 === object.length) { + // Quote empty string + isQuoted = true; + } else if (CHAR_SPACE === first || + CHAR_SPACE === object.charCodeAt(object.length - 1)) { + isQuoted = true; + } else if (CHAR_MINUS === first || + CHAR_QUESTION === first) { + // Don't check second symbol for simplicity + isQuoted = true; + } + + for (position = 0, length = object.length; position < length; position += 1) { + character = object.charCodeAt(position); + + if (!isQuoted) { + if (CHAR_TAB === character || + CHAR_LINE_FEED === character || + CHAR_CARRIAGE_RETURN === character || + CHAR_COMMA === character || + CHAR_LEFT_SQUARE_BRACKET === character || + CHAR_RIGHT_SQUARE_BRACKET === character || + CHAR_LEFT_CURLY_BRACKET === character || + CHAR_RIGHT_CURLY_BRACKET === character || + CHAR_SHARP === character || + CHAR_AMPERSAND === character || + CHAR_ASTERISK === character || + CHAR_EXCLAMATION === character || + CHAR_VERTICAL_LINE === character || + CHAR_GREATER_THAN === character || + CHAR_SINGLE_QUOTE === character || + CHAR_DOUBLE_QUOTE === character || + CHAR_PERCENT === character || + CHAR_COMMERCIAL_AT === character || + CHAR_COLON === character || + CHAR_GRAVE_ACCENT === character) { + isQuoted = true; + } + } + + if (ESCAPE_SEQUENCES[character] || + !((0x00020 <= character && character <= 0x00007E) || + (0x00085 === character) || + (0x000A0 <= character && character <= 0x00D7FF) || + (0x0E000 <= character && character <= 0x00FFFD) || + (0x10000 <= character && character <= 0x10FFFF))) { + state.dump += object.slice(checkpoint, position); + state.dump += ESCAPE_SEQUENCES[character] || encodeHex(character); + checkpoint = position + 1; + isQuoted = true; + } + } + + if (checkpoint < position) { + state.dump += object.slice(checkpoint, position); + } + + if (!isQuoted && testImplicitResolving(state, state.dump)) { + isQuoted = true; + } + + if (isQuoted) { + state.dump = '"' + state.dump + '"'; + } +} + +function writeFlowSequence(state, level, object) { + var _result = '', + _tag = state.tag, + index, + length; + + for (index = 0, length = object.length; index < length; index += 1) { + // Write only valid elements. + if (writeNode(state, level, object[index], false, false)) { + if (0 !== index) { + _result += ', '; + } + _result += state.dump; + } + } + + state.tag = _tag; + state.dump = '[' + _result + ']'; +} + +function writeBlockSequence(state, level, object, compact) { + var _result = '', + _tag = state.tag, + index, + length; + + for (index = 0, length = object.length; index < length; index += 1) { + // Write only valid elements. + if (writeNode(state, level + 1, object[index], true, true)) { + if (!compact || 0 !== index) { + _result += generateNextLine(state, level); + } + _result += '- ' + state.dump; + } + } + + state.tag = _tag; + state.dump = _result || '[]'; // Empty sequence if no valid values. +} + +function writeFlowMapping(state, level, object) { + var _result = '', + _tag = state.tag, + objectKeyList = Object.keys(object), + index, + length, + objectKey, + objectValue, + pairBuffer; + + for (index = 0, length = objectKeyList.length; index < length; index += 1) { + pairBuffer = ''; + + if (0 !== index) { + pairBuffer += ', '; + } + + objectKey = objectKeyList[index]; + objectValue = object[objectKey]; + + if (!writeNode(state, level, objectKey, false, false)) { + continue; // Skip this pair because of invalid key; + } + + if (state.dump.length > 1024) { + pairBuffer += '? '; + } + + pairBuffer += state.dump + ': '; + + if (!writeNode(state, level, objectValue, false, false)) { + continue; // Skip this pair because of invalid value. + } + + pairBuffer += state.dump; + + // Both key and value are valid. + _result += pairBuffer; + } + + state.tag = _tag; + state.dump = '{' + _result + '}'; +} + +function writeBlockMapping(state, level, object, compact) { + var _result = '', + _tag = state.tag, + objectKeyList = Object.keys(object), + index, + length, + objectKey, + objectValue, + explicitPair, + pairBuffer; + + for (index = 0, length = objectKeyList.length; index < length; index += 1) { + pairBuffer = ''; + + if (!compact || 0 !== index) { + pairBuffer += generateNextLine(state, level); + } + + objectKey = objectKeyList[index]; + objectValue = object[objectKey]; + + if (!writeNode(state, level + 1, objectKey, true, true)) { + continue; // Skip this pair because of invalid key. + } + + explicitPair = (null !== state.tag && '?' !== state.tag) || + (state.dump && state.dump.length > 1024); + + if (explicitPair) { + if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) { + pairBuffer += '?'; + } else { + pairBuffer += '? '; + } + } + + pairBuffer += state.dump; + + if (explicitPair) { + pairBuffer += generateNextLine(state, level); + } + + if (!writeNode(state, level + 1, objectValue, true, explicitPair)) { + continue; // Skip this pair because of invalid value. + } + + if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) { + pairBuffer += ':'; + } else { + pairBuffer += ': '; + } + + pairBuffer += state.dump; + + // Both key and value are valid. + _result += pairBuffer; + } + + state.tag = _tag; + state.dump = _result || '{}'; // Empty mapping if no valid pairs. +} + +function detectType(state, object, explicit) { + var _result, typeList, index, length, type, style; + + typeList = explicit ? state.explicitTypes : state.implicitTypes; + + for (index = 0, length = typeList.length; index < length; index += 1) { + type = typeList[index]; + + if ((type.instanceOf || type.predicate) && + (!type.instanceOf || (('object' === typeof object) && (object instanceof type.instanceOf))) && + (!type.predicate || type.predicate(object))) { + + state.tag = explicit ? type.tag : '?'; + + if (type.represent) { + style = state.styleMap[type.tag] || type.defaultStyle; + + if ('[object Function]' === _toString.call(type.represent)) { + _result = type.represent(object, style); + } else if (_hasOwnProperty.call(type.represent, style)) { + _result = type.represent[style](object, style); + } else { + throw new YAMLException('!<' + type.tag + '> tag resolver accepts not "' + style + '" style'); + } + + state.dump = _result; + } + + return true; + } + } + + return false; +} + +// Serializes `object` and writes it to global `result`. +// Returns true on success, or false on invalid object. +// +function writeNode(state, level, object, block, compact) { + state.tag = null; + state.dump = object; + + if (!detectType(state, object, false)) { + detectType(state, object, true); + } + + var type = _toString.call(state.dump); + + if (block) { + block = (0 > state.flowLevel || state.flowLevel > level); + } + + if ((null !== state.tag && '?' !== state.tag) || (2 !== state.indent && level > 0)) { + compact = false; + } + + var objectOrArray = '[object Object]' === type || '[object Array]' === type, + duplicateIndex, + duplicate; + + if (objectOrArray) { + duplicateIndex = state.duplicates.indexOf(object); + duplicate = duplicateIndex !== -1; + } + + if (duplicate && state.usedDuplicates[duplicateIndex]) { + state.dump = '*ref_' + duplicateIndex; + } else { + if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) { + state.usedDuplicates[duplicateIndex] = true; + } + if ('[object Object]' === type) { + if (block && (0 !== Object.keys(state.dump).length)) { + writeBlockMapping(state, level, state.dump, compact); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + (0 === level ? '\n' : '') + state.dump; + } + } else { + writeFlowMapping(state, level, state.dump); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + ' ' + state.dump; + } + } + } else if ('[object Array]' === type) { + if (block && (0 !== state.dump.length)) { + writeBlockSequence(state, level, state.dump, compact); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + (0 === level ? '\n' : '') + state.dump; + } + } else { + writeFlowSequence(state, level, state.dump); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + ' ' + state.dump; + } + } + } else if ('[object String]' === type) { + if ('?' !== state.tag) { + writeScalar(state, state.dump); + } + } else if (state.skipInvalid) { + return false; + } else { + throw new YAMLException('unacceptable kind of an object to dump ' + type); + } + + if (null !== state.tag && '?' !== state.tag) { + state.dump = '!<' + state.tag + '> ' + state.dump; + } + } + + return true; +} + +function getDuplicateReferences(object, state) { + var objects = [], + duplicatesIndexes = [], + index, + length; + + inspectNode(object, objects, duplicatesIndexes); + + for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) { + state.duplicates.push(objects[duplicatesIndexes[index]]); + } + state.usedDuplicates = new Array(length); +} + +function inspectNode(object, objects, duplicatesIndexes) { + var type = _toString.call(object), + objectKeyList, + index, + length; + + if (null !== object && 'object' === typeof object) { + index = objects.indexOf(object); + if (-1 !== index) { + if (-1 === duplicatesIndexes.indexOf(index)) { + duplicatesIndexes.push(index); + } + } else { + objects.push(object); + + if(Array.isArray(object)) { + for (index = 0, length = object.length; index < length; index += 1) { + inspectNode(object[index], objects, duplicatesIndexes); + } + } else { + objectKeyList = Object.keys(object); + + for (index = 0, length = objectKeyList.length; index < length; index += 1) { + inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes); + } + } + } + } +} + +function dump(input, options) { + options = options || {}; + + var state = new State(options); + + getDuplicateReferences(input, state); + + if (writeNode(state, 0, input, true, true)) { + return state.dump + '\n'; + } else { + return ''; + } +} + + +function safeDump(input, options) { + return dump(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options)); +} + + +module.exports.dump = dump; +module.exports.safeDump = safeDump; + +},{"./common":4,"./exception":6,"./schema/default_full":11,"./schema/default_safe":12}],6:[function(require,module,exports){ +'use strict'; + + +function YAMLException(reason, mark) { + this.name = 'YAMLException'; + this.reason = reason; + this.mark = mark; + this.message = this.toString(false); +} + + +YAMLException.prototype.toString = function toString(compact) { + var result; + + result = 'JS-YAML: ' + (this.reason || '(unknown reason)'); + + if (!compact && this.mark) { + result += ' ' + this.mark.toString(); + } + + return result; +}; + + +module.exports = YAMLException; + +},{}],7:[function(require,module,exports){ +'use strict'; + + +var common = require('./common'); +var YAMLException = require('./exception'); +var Mark = require('./mark'); +var DEFAULT_SAFE_SCHEMA = require('./schema/default_safe'); +var DEFAULT_FULL_SCHEMA = require('./schema/default_full'); + + +var _hasOwnProperty = Object.prototype.hasOwnProperty; + + +var CONTEXT_FLOW_IN = 1; +var CONTEXT_FLOW_OUT = 2; +var CONTEXT_BLOCK_IN = 3; +var CONTEXT_BLOCK_OUT = 4; + + +var CHOMPING_CLIP = 1; +var CHOMPING_STRIP = 2; +var CHOMPING_KEEP = 3; + + +var PATTERN_NON_PRINTABLE = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uD800-\uDFFF\uFFFE\uFFFF]/; +var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/; +var PATTERN_FLOW_INDICATORS = /[,\[\]\{\}]/; +var PATTERN_TAG_HANDLE = /^(?:!|!!|![a-z\-]+!)$/i; +var PATTERN_TAG_URI = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i; + + +function is_EOL(c) { + return (c === 0x0A/* LF */) || (c === 0x0D/* CR */); +} + +function is_WHITE_SPACE(c) { + return (c === 0x09/* Tab */) || (c === 0x20/* Space */); +} + +function is_WS_OR_EOL(c) { + return (c === 0x09/* Tab */) || + (c === 0x20/* Space */) || + (c === 0x0A/* LF */) || + (c === 0x0D/* CR */); +} + +function is_FLOW_INDICATOR(c) { + return 0x2C/* , */ === c || + 0x5B/* [ */ === c || + 0x5D/* ] */ === c || + 0x7B/* { */ === c || + 0x7D/* } */ === c; +} + +function fromHexCode(c) { + var lc; + + if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) { + return c - 0x30; + } + + lc = c | 0x20; + if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) { + return lc - 0x61 + 10; + } + + return -1; +} + +function escapedHexLen(c) { + if (c === 0x78/* x */) { return 2; } + if (c === 0x75/* u */) { return 4; } + if (c === 0x55/* U */) { return 8; } + return 0; +} + +function fromDecimalCode(c) { + if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) { + return c - 0x30; + } + + return -1; +} + +function simpleEscapeSequence(c) { + return (c === 0x30/* 0 */) ? '\x00' : + (c === 0x61/* a */) ? '\x07' : + (c === 0x62/* b */) ? '\x08' : + (c === 0x74/* t */) ? '\x09' : + (c === 0x09/* Tab */) ? '\x09' : + (c === 0x6E/* n */) ? '\x0A' : + (c === 0x76/* v */) ? '\x0B' : + (c === 0x66/* f */) ? '\x0C' : + (c === 0x72/* r */) ? '\x0D' : + (c === 0x65/* e */) ? '\x1B' : + (c === 0x20/* Space */) ? ' ' : + (c === 0x22/* " */) ? '\x22' : + (c === 0x2F/* / */) ? '/' : + (c === 0x5C/* \ */) ? '\x5C' : + (c === 0x4E/* N */) ? '\x85' : + (c === 0x5F/* _ */) ? '\xA0' : + (c === 0x4C/* L */) ? '\u2028' : + (c === 0x50/* P */) ? '\u2029' : ''; +} + +function charFromCodepoint(c) { + if (c <= 0xFFFF) { + return String.fromCharCode(c); + } else { + // Encode UTF-16 surrogate pair + // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF + return String.fromCharCode(((c - 0x010000) >> 10) + 0xD800, + ((c - 0x010000) & 0x03FF) + 0xDC00); + } +} + +var simpleEscapeCheck = new Array(256); // integer, for fast access +var simpleEscapeMap = new Array(256); +for (var i = 0; i < 256; i++) { + simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0; + simpleEscapeMap[i] = simpleEscapeSequence(i); +} + + +function State(input, options) { + this.input = input; + + this.filename = options['filename'] || null; + this.schema = options['schema'] || DEFAULT_FULL_SCHEMA; + this.onWarning = options['onWarning'] || null; + this.legacy = options['legacy'] || false; + + this.implicitTypes = this.schema.compiledImplicit; + this.typeMap = this.schema.compiledTypeMap; + + this.length = input.length; + this.position = 0; + this.line = 0; + this.lineStart = 0; + this.lineIndent = 0; + + this.documents = []; + + /* + this.version; + this.checkLineBreaks; + this.tagMap; + this.anchorMap; + this.tag; + this.anchor; + this.kind; + this.result;*/ + +} + + +function generateError(state, message) { + return new YAMLException( + message, + new Mark(state.filename, state.input, state.position, state.line, (state.position - state.lineStart))); +} + +function throwError(state, message) { + throw generateError(state, message); +} + +function throwWarning(state, message) { + var error = generateError(state, message); + + if (state.onWarning) { + state.onWarning.call(null, error); + } else { + throw error; + } +} + + +var directiveHandlers = { + + 'YAML': function handleYamlDirective(state, name, args) { + + var match, major, minor; + + if (null !== state.version) { + throwError(state, 'duplication of %YAML directive'); + } + + if (1 !== args.length) { + throwError(state, 'YAML directive accepts exactly one argument'); + } + + match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]); + + if (null === match) { + throwError(state, 'ill-formed argument of the YAML directive'); + } + + major = parseInt(match[1], 10); + minor = parseInt(match[2], 10); + + if (1 !== major) { + throwError(state, 'unacceptable YAML version of the document'); + } + + state.version = args[0]; + state.checkLineBreaks = (minor < 2); + + if (1 !== minor && 2 !== minor) { + throwWarning(state, 'unsupported YAML version of the document'); + } + }, + + 'TAG': function handleTagDirective(state, name, args) { + + var handle, prefix; + + if (2 !== args.length) { + throwError(state, 'TAG directive accepts exactly two arguments'); + } + + handle = args[0]; + prefix = args[1]; + + if (!PATTERN_TAG_HANDLE.test(handle)) { + throwError(state, 'ill-formed tag handle (first argument) of the TAG directive'); + } + + if (_hasOwnProperty.call(state.tagMap, handle)) { + throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle'); + } + + if (!PATTERN_TAG_URI.test(prefix)) { + throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive'); + } + + state.tagMap[handle] = prefix; + } +}; + + +function captureSegment(state, start, end, checkJson) { + var _position, _length, _character, _result; + + if (start < end) { + _result = state.input.slice(start, end); + + if (checkJson) { + for (_position = 0, _length = _result.length; + _position < _length; + _position += 1) { + _character = _result.charCodeAt(_position); + if (!(0x09 === _character || + 0x20 <= _character && _character <= 0x10FFFF)) { + throwError(state, 'expected valid JSON character'); + } + } + } + + state.result += _result; + } +} + +function mergeMappings(state, destination, source) { + var sourceKeys, key, index, quantity; + + if (!common.isObject(source)) { + throwError(state, 'cannot merge mappings; the provided source object is unacceptable'); + } + + sourceKeys = Object.keys(source); + + for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) { + key = sourceKeys[index]; + + if (!_hasOwnProperty.call(destination, key)) { + destination[key] = source[key]; + } + } +} + +function storeMappingPair(state, _result, keyTag, keyNode, valueNode) { + var index, quantity; + + keyNode = String(keyNode); + + if (null === _result) { + _result = {}; + } + + if ('tag:yaml.org,2002:merge' === keyTag) { + if (Array.isArray(valueNode)) { + for (index = 0, quantity = valueNode.length; index < quantity; index += 1) { + mergeMappings(state, _result, valueNode[index]); + } + } else { + mergeMappings(state, _result, valueNode); + } + } else { + _result[keyNode] = valueNode; + } + + return _result; +} + +function readLineBreak(state) { + var ch; + + ch = state.input.charCodeAt(state.position); + + if (0x0A/* LF */ === ch) { + state.position++; + } else if (0x0D/* CR */ === ch) { + state.position++; + if (0x0A/* LF */ === state.input.charCodeAt(state.position)) { + state.position++; + } + } else { + throwError(state, 'a line break is expected'); + } + + state.line += 1; + state.lineStart = state.position; +} + +function skipSeparationSpace(state, allowComments, checkIndent) { + var lineBreaks = 0, + ch = state.input.charCodeAt(state.position); + + while (0 !== ch) { + while (is_WHITE_SPACE(ch)) { + ch = state.input.charCodeAt(++state.position); + } + + if (allowComments && 0x23/* # */ === ch) { + do { + ch = state.input.charCodeAt(++state.position); + } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && 0 !== ch); + } + + if (is_EOL(ch)) { + readLineBreak(state); + + ch = state.input.charCodeAt(state.position); + lineBreaks++; + state.lineIndent = 0; + + while (0x20/* Space */ === ch) { + state.lineIndent++; + ch = state.input.charCodeAt(++state.position); + } + } else { + break; + } + } + + if (-1 !== checkIndent && 0 !== lineBreaks && state.lineIndent < checkIndent) { + throwWarning(state, 'deficient indentation'); + } + + return lineBreaks; +} + +function testDocumentSeparator(state) { + var _position = state.position, + ch; + + ch = state.input.charCodeAt(_position); + + // Condition state.position === state.lineStart is tested + // in parent on each call, for efficiency. No needs to test here again. + if ((0x2D/* - */ === ch || 0x2E/* . */ === ch) && + state.input.charCodeAt(_position + 1) === ch && + state.input.charCodeAt(_position+ 2) === ch) { + + _position += 3; + + ch = state.input.charCodeAt(_position); + + if (ch === 0 || is_WS_OR_EOL(ch)) { + return true; + } + } + + return false; +} + +function writeFoldedLines(state, count) { + if (1 === count) { + state.result += ' '; + } else if (count > 1) { + state.result += common.repeat('\n', count - 1); + } +} + + +function readPlainScalar(state, nodeIndent, withinFlowCollection) { + var preceding, + following, + captureStart, + captureEnd, + hasPendingContent, + _line, + _lineStart, + _lineIndent, + _kind = state.kind, + _result = state.result, + ch; + + ch = state.input.charCodeAt(state.position); + + if (is_WS_OR_EOL(ch) || + is_FLOW_INDICATOR(ch) || + 0x23/* # */ === ch || + 0x26/* & */ === ch || + 0x2A/* * */ === ch || + 0x21/* ! */ === ch || + 0x7C/* | */ === ch || + 0x3E/* > */ === ch || + 0x27/* ' */ === ch || + 0x22/* " */ === ch || + 0x25/* % */ === ch || + 0x40/* @ */ === ch || + 0x60/* ` */ === ch) { + return false; + } + + if (0x3F/* ? */ === ch || 0x2D/* - */ === ch) { + following = state.input.charCodeAt(state.position + 1); + + if (is_WS_OR_EOL(following) || + withinFlowCollection && is_FLOW_INDICATOR(following)) { + return false; + } + } + + state.kind = 'scalar'; + state.result = ''; + captureStart = captureEnd = state.position; + hasPendingContent = false; + + while (0 !== ch) { + if (0x3A/* : */ === ch) { + following = state.input.charCodeAt(state.position+1); + + if (is_WS_OR_EOL(following) || + withinFlowCollection && is_FLOW_INDICATOR(following)) { + break; + } + + } else if (0x23/* # */ === ch) { + preceding = state.input.charCodeAt(state.position - 1); + + if (is_WS_OR_EOL(preceding)) { + break; + } + + } else if ((state.position === state.lineStart && testDocumentSeparator(state)) || + withinFlowCollection && is_FLOW_INDICATOR(ch)) { + break; + + } else if (is_EOL(ch)) { + _line = state.line; + _lineStart = state.lineStart; + _lineIndent = state.lineIndent; + skipSeparationSpace(state, false, -1); + + if (state.lineIndent >= nodeIndent) { + hasPendingContent = true; + ch = state.input.charCodeAt(state.position); + continue; + } else { + state.position = captureEnd; + state.line = _line; + state.lineStart = _lineStart; + state.lineIndent = _lineIndent; + break; + } + } + + if (hasPendingContent) { + captureSegment(state, captureStart, captureEnd, false); + writeFoldedLines(state, state.line - _line); + captureStart = captureEnd = state.position; + hasPendingContent = false; + } + + if (!is_WHITE_SPACE(ch)) { + captureEnd = state.position + 1; + } + + ch = state.input.charCodeAt(++state.position); + } + + captureSegment(state, captureStart, captureEnd, false); + + if (state.result) { + return true; + } else { + state.kind = _kind; + state.result = _result; + return false; + } +} + +function readSingleQuotedScalar(state, nodeIndent) { + var ch, + captureStart, captureEnd; + + ch = state.input.charCodeAt(state.position); + + if (0x27/* ' */ !== ch) { + return false; + } + + state.kind = 'scalar'; + state.result = ''; + state.position++; + captureStart = captureEnd = state.position; + + while (0 !== (ch = state.input.charCodeAt(state.position))) { + if (0x27/* ' */ === ch) { + captureSegment(state, captureStart, state.position, true); + ch = state.input.charCodeAt(++state.position); + + if (0x27/* ' */ === ch) { + captureStart = captureEnd = state.position; + state.position++; + } else { + return true; + } + + } else if (is_EOL(ch)) { + captureSegment(state, captureStart, captureEnd, true); + writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent)); + captureStart = captureEnd = state.position; + + } else if (state.position === state.lineStart && testDocumentSeparator(state)) { + throwError(state, 'unexpected end of the document within a single quoted scalar'); + + } else { + state.position++; + captureEnd = state.position; + } + } + + throwError(state, 'unexpected end of the stream within a single quoted scalar'); +} + +function readDoubleQuotedScalar(state, nodeIndent) { + var captureStart, + captureEnd, + hexLength, + hexResult, + tmp, tmpEsc, + ch; + + ch = state.input.charCodeAt(state.position); + + if (0x22/* " */ !== ch) { + return false; + } + + state.kind = 'scalar'; + state.result = ''; + state.position++; + captureStart = captureEnd = state.position; + + while (0 !== (ch = state.input.charCodeAt(state.position))) { + if (0x22/* " */ === ch) { + captureSegment(state, captureStart, state.position, true); + state.position++; + return true; + + } else if (0x5C/* \ */ === ch) { + captureSegment(state, captureStart, state.position, true); + ch = state.input.charCodeAt(++state.position); + + if (is_EOL(ch)) { + skipSeparationSpace(state, false, nodeIndent); + + //TODO: rework to inline fn with no type cast? + } else if (ch < 256 && simpleEscapeCheck[ch]) { + state.result += simpleEscapeMap[ch]; + state.position++; + + } else if ((tmp = escapedHexLen(ch)) > 0) { + hexLength = tmp; + hexResult = 0; + + for (; hexLength > 0; hexLength--) { + ch = state.input.charCodeAt(++state.position); + + if ((tmp = fromHexCode(ch)) >= 0) { + hexResult = (hexResult << 4) + tmp; + + } else { + throwError(state, 'expected hexadecimal character'); + } + } + + state.result += charFromCodepoint(hexResult); + + state.position++; + + } else { + throwError(state, 'unknown escape sequence'); + } + + captureStart = captureEnd = state.position; + + } else if (is_EOL(ch)) { + captureSegment(state, captureStart, captureEnd, true); + writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent)); + captureStart = captureEnd = state.position; + + } else if (state.position === state.lineStart && testDocumentSeparator(state)) { + throwError(state, 'unexpected end of the document within a double quoted scalar'); + + } else { + state.position++; + captureEnd = state.position; + } + } + + throwError(state, 'unexpected end of the stream within a double quoted scalar'); +} + +function readFlowCollection(state, nodeIndent) { + var readNext = true, + _line, + _tag = state.tag, + _result, + _anchor = state.anchor, + following, + terminator, + isPair, + isExplicitPair, + isMapping, + keyNode, + keyTag, + valueNode, + ch; + + ch = state.input.charCodeAt(state.position); + + if (ch === 0x5B/* [ */) { + terminator = 0x5D/* ] */; + isMapping = false; + _result = []; + } else if (ch === 0x7B/* { */) { + terminator = 0x7D/* } */; + isMapping = true; + _result = {}; + } else { + return false; + } + + if (null !== state.anchor) { + state.anchorMap[state.anchor] = _result; + } + + ch = state.input.charCodeAt(++state.position); + + while (0 !== ch) { + skipSeparationSpace(state, true, nodeIndent); + + ch = state.input.charCodeAt(state.position); + + if (ch === terminator) { + state.position++; + state.tag = _tag; + state.anchor = _anchor; + state.kind = isMapping ? 'mapping' : 'sequence'; + state.result = _result; + return true; + } else if (!readNext) { + throwError(state, 'missed comma between flow collection entries'); + } + + keyTag = keyNode = valueNode = null; + isPair = isExplicitPair = false; + + if (0x3F/* ? */ === ch) { + following = state.input.charCodeAt(state.position + 1); + + if (is_WS_OR_EOL(following)) { + isPair = isExplicitPair = true; + state.position++; + skipSeparationSpace(state, true, nodeIndent); + } + } + + _line = state.line; + composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true); + keyTag = state.tag; + keyNode = state.result; + skipSeparationSpace(state, true, nodeIndent); + + ch = state.input.charCodeAt(state.position); + + if ((isExplicitPair || state.line === _line) && 0x3A/* : */ === ch) { + isPair = true; + ch = state.input.charCodeAt(++state.position); + skipSeparationSpace(state, true, nodeIndent); + composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true); + valueNode = state.result; + } + + if (isMapping) { + storeMappingPair(state, _result, keyTag, keyNode, valueNode); + } else if (isPair) { + _result.push(storeMappingPair(state, null, keyTag, keyNode, valueNode)); + } else { + _result.push(keyNode); + } + + skipSeparationSpace(state, true, nodeIndent); + + ch = state.input.charCodeAt(state.position); + + if (0x2C/* , */ === ch) { + readNext = true; + ch = state.input.charCodeAt(++state.position); + } else { + readNext = false; + } + } + + throwError(state, 'unexpected end of the stream within a flow collection'); +} + +function readBlockScalar(state, nodeIndent) { + var captureStart, + folding, + chomping = CHOMPING_CLIP, + detectedIndent = false, + textIndent = nodeIndent, + emptyLines = 0, + atMoreIndented = false, + tmp, + ch; + + ch = state.input.charCodeAt(state.position); + + if (ch === 0x7C/* | */) { + folding = false; + } else if (ch === 0x3E/* > */) { + folding = true; + } else { + return false; + } + + state.kind = 'scalar'; + state.result = ''; + + while (0 !== ch) { + ch = state.input.charCodeAt(++state.position); + + if (0x2B/* + */ === ch || 0x2D/* - */ === ch) { + if (CHOMPING_CLIP === chomping) { + chomping = (0x2B/* + */ === ch) ? CHOMPING_KEEP : CHOMPING_STRIP; + } else { + throwError(state, 'repeat of a chomping mode identifier'); + } + + } else if ((tmp = fromDecimalCode(ch)) >= 0) { + if (tmp === 0) { + throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one'); + } else if (!detectedIndent) { + textIndent = nodeIndent + tmp - 1; + detectedIndent = true; + } else { + throwError(state, 'repeat of an indentation width identifier'); + } + + } else { + break; + } + } + + if (is_WHITE_SPACE(ch)) { + do { ch = state.input.charCodeAt(++state.position); } + while (is_WHITE_SPACE(ch)); + + if (0x23/* # */ === ch) { + do { ch = state.input.charCodeAt(++state.position); } + while (!is_EOL(ch) && (0 !== ch)); + } + } + + while (0 !== ch) { + readLineBreak(state); + state.lineIndent = 0; + + ch = state.input.charCodeAt(state.position); + + while ((!detectedIndent || state.lineIndent < textIndent) && + (0x20/* Space */ === ch)) { + state.lineIndent++; + ch = state.input.charCodeAt(++state.position); + } + + if (!detectedIndent && state.lineIndent > textIndent) { + textIndent = state.lineIndent; + } + + if (is_EOL(ch)) { + emptyLines++; + continue; + } + + // End of the scalar. + if (state.lineIndent < textIndent) { + + // Perform the chomping. + if (chomping === CHOMPING_KEEP) { + state.result += common.repeat('\n', emptyLines); + } else if (chomping === CHOMPING_CLIP) { + if (detectedIndent) { // i.e. only if the scalar is not empty. + state.result += '\n'; + } + } + + // Break this `while` cycle and go to the funciton's epilogue. + break; + } + + // Folded style: use fancy rules to handle line breaks. + if (folding) { + + // Lines starting with white space characters (more-indented lines) are not folded. + if (is_WHITE_SPACE(ch)) { + atMoreIndented = true; + state.result += common.repeat('\n', emptyLines + 1); + + // End of more-indented block. + } else if (atMoreIndented) { + atMoreIndented = false; + state.result += common.repeat('\n', emptyLines + 1); + + // Just one line break - perceive as the same line. + } else if (0 === emptyLines) { + if (detectedIndent) { // i.e. only if we have already read some scalar content. + state.result += ' '; + } + + // Several line breaks - perceive as different lines. + } else { + state.result += common.repeat('\n', emptyLines); + } + + // Literal style: just add exact number of line breaks between content lines. + } else { + + // If current line isn't the first one - count line break from the last content line. + if (detectedIndent) { + state.result += common.repeat('\n', emptyLines + 1); + + // In case of the first content line - count only empty lines. + } else { + state.result += common.repeat('\n', emptyLines); + } + } + + detectedIndent = true; + emptyLines = 0; + captureStart = state.position; + + while (!is_EOL(ch) && (0 !== ch)) + { ch = state.input.charCodeAt(++state.position); } + + captureSegment(state, captureStart, state.position, false); + } + + return true; +} + +function readBlockSequence(state, nodeIndent) { + var _line, + _tag = state.tag, + _anchor = state.anchor, + _result = [], + following, + detected = false, + ch; + + if (null !== state.anchor) { + state.anchorMap[state.anchor] = _result; + } + + ch = state.input.charCodeAt(state.position); + + while (0 !== ch) { + + if (0x2D/* - */ !== ch) { + break; + } + + following = state.input.charCodeAt(state.position + 1); + + if (!is_WS_OR_EOL(following)) { + break; + } + + detected = true; + state.position++; + + if (skipSeparationSpace(state, true, -1)) { + if (state.lineIndent <= nodeIndent) { + _result.push(null); + ch = state.input.charCodeAt(state.position); + continue; + } + } + + _line = state.line; + composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true); + _result.push(state.result); + skipSeparationSpace(state, true, -1); + + ch = state.input.charCodeAt(state.position); + + if ((state.line === _line || state.lineIndent > nodeIndent) && (0 !== ch)) { + throwError(state, 'bad indentation of a sequence entry'); + } else if (state.lineIndent < nodeIndent) { + break; + } + } + + if (detected) { + state.tag = _tag; + state.anchor = _anchor; + state.kind = 'sequence'; + state.result = _result; + return true; + } else { + return false; + } +} + +function readBlockMapping(state, nodeIndent, flowIndent) { + var following, + allowCompact, + _line, + _tag = state.tag, + _anchor = state.anchor, + _result = {}, + keyTag = null, + keyNode = null, + valueNode = null, + atExplicitKey = false, + detected = false, + ch; + + if (null !== state.anchor) { + state.anchorMap[state.anchor] = _result; + } + + ch = state.input.charCodeAt(state.position); + + while (0 !== ch) { + following = state.input.charCodeAt(state.position + 1); + _line = state.line; // Save the current line. + + // + // Explicit notation case. There are two separate blocks: + // first for the key (denoted by "?") and second for the value (denoted by ":") + // + if ((0x3F/* ? */ === ch || 0x3A/* : */ === ch) && is_WS_OR_EOL(following)) { + + if (0x3F/* ? */ === ch) { + if (atExplicitKey) { + storeMappingPair(state, _result, keyTag, keyNode, null); + keyTag = keyNode = valueNode = null; + } + + detected = true; + atExplicitKey = true; + allowCompact = true; + + } else if (atExplicitKey) { + // i.e. 0x3A/* : */ === character after the explicit key. + atExplicitKey = false; + allowCompact = true; + + } else { + throwError(state, 'incomplete explicit mapping pair; a key node is missed'); + } + + state.position += 1; + ch = following; + + // + // Implicit notation case. Flow-style node as the key first, then ":", and the value. + // + } else if (composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) { + + if (state.line === _line) { + ch = state.input.charCodeAt(state.position); + + while (is_WHITE_SPACE(ch)) { + ch = state.input.charCodeAt(++state.position); + } + + if (0x3A/* : */ === ch) { + ch = state.input.charCodeAt(++state.position); + + if (!is_WS_OR_EOL(ch)) { + throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping'); + } + + if (atExplicitKey) { + storeMappingPair(state, _result, keyTag, keyNode, null); + keyTag = keyNode = valueNode = null; + } + + detected = true; + atExplicitKey = false; + allowCompact = false; + keyTag = state.tag; + keyNode = state.result; + + } else if (detected) { + throwError(state, 'can not read an implicit mapping pair; a colon is missed'); + + } else { + state.tag = _tag; + state.anchor = _anchor; + return true; // Keep the result of `composeNode`. + } + + } else if (detected) { + throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key'); + + } else { + state.tag = _tag; + state.anchor = _anchor; + return true; // Keep the result of `composeNode`. + } + + } else { + break; // Reading is done. Go to the epilogue. + } + + // + // Common reading code for both explicit and implicit notations. + // + if (state.line === _line || state.lineIndent > nodeIndent) { + if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) { + if (atExplicitKey) { + keyNode = state.result; + } else { + valueNode = state.result; + } + } + + if (!atExplicitKey) { + storeMappingPair(state, _result, keyTag, keyNode, valueNode); + keyTag = keyNode = valueNode = null; + } + + skipSeparationSpace(state, true, -1); + ch = state.input.charCodeAt(state.position); + } + + if (state.lineIndent > nodeIndent && (0 !== ch)) { + throwError(state, 'bad indentation of a mapping entry'); + } else if (state.lineIndent < nodeIndent) { + break; + } + } + + // + // Epilogue. + // + + // Special case: last mapping's node contains only the key in explicit notation. + if (atExplicitKey) { + storeMappingPair(state, _result, keyTag, keyNode, null); + } + + // Expose the resulting mapping. + if (detected) { + state.tag = _tag; + state.anchor = _anchor; + state.kind = 'mapping'; + state.result = _result; + } + + return detected; +} + +function readTagProperty(state) { + var _position, + isVerbatim = false, + isNamed = false, + tagHandle, + tagName, + ch; + + ch = state.input.charCodeAt(state.position); + + if (0x21/* ! */ !== ch) { + return false; + } + + if (null !== state.tag) { + throwError(state, 'duplication of a tag property'); + } + + ch = state.input.charCodeAt(++state.position); + + if (0x3C/* < */ === ch) { + isVerbatim = true; + ch = state.input.charCodeAt(++state.position); + + } else if (0x21/* ! */ === ch) { + isNamed = true; + tagHandle = '!!'; + ch = state.input.charCodeAt(++state.position); + + } else { + tagHandle = '!'; + } + + _position = state.position; + + if (isVerbatim) { + do { ch = state.input.charCodeAt(++state.position); } + while (0 !== ch && 0x3E/* > */ !== ch); + + if (state.position < state.length) { + tagName = state.input.slice(_position, state.position); + ch = state.input.charCodeAt(++state.position); + } else { + throwError(state, 'unexpected end of the stream within a verbatim tag'); + } + } else { + while (0 !== ch && !is_WS_OR_EOL(ch)) { + + if (0x21/* ! */ === ch) { + if (!isNamed) { + tagHandle = state.input.slice(_position - 1, state.position + 1); + + if (!PATTERN_TAG_HANDLE.test(tagHandle)) { + throwError(state, 'named tag handle cannot contain such characters'); + } + + isNamed = true; + _position = state.position + 1; + } else { + throwError(state, 'tag suffix cannot contain exclamation marks'); + } + } + + ch = state.input.charCodeAt(++state.position); + } + + tagName = state.input.slice(_position, state.position); + + if (PATTERN_FLOW_INDICATORS.test(tagName)) { + throwError(state, 'tag suffix cannot contain flow indicator characters'); + } + } + + if (tagName && !PATTERN_TAG_URI.test(tagName)) { + throwError(state, 'tag name cannot contain such characters: ' + tagName); + } + + if (isVerbatim) { + state.tag = tagName; + + } else if (_hasOwnProperty.call(state.tagMap, tagHandle)) { + state.tag = state.tagMap[tagHandle] + tagName; + + } else if ('!' === tagHandle) { + state.tag = '!' + tagName; + + } else if ('!!' === tagHandle) { + state.tag = 'tag:yaml.org,2002:' + tagName; + + } else { + throwError(state, 'undeclared tag handle "' + tagHandle + '"'); + } + + return true; +} + +function readAnchorProperty(state) { + var _position, + ch; + + ch = state.input.charCodeAt(state.position); + + if (0x26/* & */ !== ch) { + return false; + } + + if (null !== state.anchor) { + throwError(state, 'duplication of an anchor property'); + } + + ch = state.input.charCodeAt(++state.position); + _position = state.position; + + while (0 !== ch && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) { + ch = state.input.charCodeAt(++state.position); + } + + if (state.position === _position) { + throwError(state, 'name of an anchor node must contain at least one character'); + } + + state.anchor = state.input.slice(_position, state.position); + return true; +} + +function readAlias(state) { + var _position, alias, + len = state.length, + input = state.input, + ch; + + ch = state.input.charCodeAt(state.position); + + if (0x2A/* * */ !== ch) { + return false; + } + + ch = state.input.charCodeAt(++state.position); + _position = state.position; + + while (0 !== ch && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) { + ch = state.input.charCodeAt(++state.position); + } + + if (state.position === _position) { + throwError(state, 'name of an alias node must contain at least one character'); + } + + alias = state.input.slice(_position, state.position); + + if (!state.anchorMap.hasOwnProperty(alias)) { + throwError(state, 'unidentified alias "' + alias + '"'); + } + + state.result = state.anchorMap[alias]; + skipSeparationSpace(state, true, -1); + return true; +} + +function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) { + var allowBlockStyles, + allowBlockScalars, + allowBlockCollections, + indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this parentIndent) { + indentStatus = 1; + } else if (state.lineIndent === parentIndent) { + indentStatus = 0; + } else if (state.lineIndent < parentIndent) { + indentStatus = -1; + } + } + } + + if (1 === indentStatus) { + while (readTagProperty(state) || readAnchorProperty(state)) { + if (skipSeparationSpace(state, true, -1)) { + atNewLine = true; + allowBlockCollections = allowBlockStyles; + + if (state.lineIndent > parentIndent) { + indentStatus = 1; + } else if (state.lineIndent === parentIndent) { + indentStatus = 0; + } else if (state.lineIndent < parentIndent) { + indentStatus = -1; + } + } else { + allowBlockCollections = false; + } + } + } + + if (allowBlockCollections) { + allowBlockCollections = atNewLine || allowCompact; + } + + if (1 === indentStatus || CONTEXT_BLOCK_OUT === nodeContext) { + if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) { + flowIndent = parentIndent; + } else { + flowIndent = parentIndent + 1; + } + + blockIndent = state.position - state.lineStart; + + if (1 === indentStatus) { + if (allowBlockCollections && + (readBlockSequence(state, blockIndent) || + readBlockMapping(state, blockIndent, flowIndent)) || + readFlowCollection(state, flowIndent)) { + hasContent = true; + } else { + if ((allowBlockScalars && readBlockScalar(state, flowIndent)) || + readSingleQuotedScalar(state, flowIndent) || + readDoubleQuotedScalar(state, flowIndent)) { + hasContent = true; + + } else if (readAlias(state)) { + hasContent = true; + + if (null !== state.tag || null !== state.anchor) { + throwError(state, 'alias node should not have any properties'); + } + + } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) { + hasContent = true; + + if (null === state.tag) { + state.tag = '?'; + } + } + + if (null !== state.anchor) { + state.anchorMap[state.anchor] = state.result; + } + } + } else if (0 === indentStatus) { + // Special case: block sequences are allowed to have same indentation level as the parent. + // http://www.yaml.org/spec/1.2/spec.html#id2799784 + hasContent = allowBlockCollections && readBlockSequence(state, blockIndent); + } + } + + if (null !== state.tag && '!' !== state.tag) { + if ('?' === state.tag) { + for (typeIndex = 0, typeQuantity = state.implicitTypes.length; + typeIndex < typeQuantity; + typeIndex += 1) { + type = state.implicitTypes[typeIndex]; + + // Implicit resolving is not allowed for non-scalar types, and '?' + // non-specific tag is only assigned to plain scalars. So, it isn't + // needed to check for 'kind' conformity. + + if (type.resolve(state.result)) { // `state.result` updated in resolver if matched + state.result = type.construct(state.result); + state.tag = type.tag; + if (null !== state.anchor) { + state.anchorMap[state.anchor] = state.result; + } + break; + } + } + } else if (_hasOwnProperty.call(state.typeMap, state.tag)) { + type = state.typeMap[state.tag]; + + if (null !== state.result && type.kind !== state.kind) { + throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"'); + } + + if (!type.resolve(state.result)) { // `state.result` updated in resolver if matched + throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag'); + } else { + state.result = type.construct(state.result); + if (null !== state.anchor) { + state.anchorMap[state.anchor] = state.result; + } + } + } else { + throwWarning(state, 'unknown tag !<' + state.tag + '>'); + } + } + + return null !== state.tag || null !== state.anchor || hasContent; +} + +function readDocument(state) { + var documentStart = state.position, + _position, + directiveName, + directiveArgs, + hasDirectives = false, + ch; + + state.version = null; + state.checkLineBreaks = state.legacy; + state.tagMap = {}; + state.anchorMap = {}; + + while (0 !== (ch = state.input.charCodeAt(state.position))) { + skipSeparationSpace(state, true, -1); + + ch = state.input.charCodeAt(state.position); + + if (state.lineIndent > 0 || 0x25/* % */ !== ch) { + break; + } + + hasDirectives = true; + ch = state.input.charCodeAt(++state.position); + _position = state.position; + + while (0 !== ch && !is_WS_OR_EOL(ch)) { + ch = state.input.charCodeAt(++state.position); + } + + directiveName = state.input.slice(_position, state.position); + directiveArgs = []; + + if (directiveName.length < 1) { + throwError(state, 'directive name must not be less than one character in length'); + } + + while (0 !== ch) { + while (is_WHITE_SPACE(ch)) { + ch = state.input.charCodeAt(++state.position); + } + + if (0x23/* # */ === ch) { + do { ch = state.input.charCodeAt(++state.position); } + while (0 !== ch && !is_EOL(ch)); + break; + } + + if (is_EOL(ch)) { + break; + } + + _position = state.position; + + while (0 !== ch && !is_WS_OR_EOL(ch)) { + ch = state.input.charCodeAt(++state.position); + } + + directiveArgs.push(state.input.slice(_position, state.position)); + } + + if (0 !== ch) { + readLineBreak(state); + } + + if (_hasOwnProperty.call(directiveHandlers, directiveName)) { + directiveHandlers[directiveName](state, directiveName, directiveArgs); + } else { + throwWarning(state, 'unknown document directive "' + directiveName + '"'); + } + } + + skipSeparationSpace(state, true, -1); + + if (0 === state.lineIndent && + 0x2D/* - */ === state.input.charCodeAt(state.position) && + 0x2D/* - */ === state.input.charCodeAt(state.position + 1) && + 0x2D/* - */ === state.input.charCodeAt(state.position + 2)) { + state.position += 3; + skipSeparationSpace(state, true, -1); + + } else if (hasDirectives) { + throwError(state, 'directives end mark is expected'); + } + + composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true); + skipSeparationSpace(state, true, -1); + + if (state.checkLineBreaks && + PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) { + throwWarning(state, 'non-ASCII line breaks are interpreted as content'); + } + + state.documents.push(state.result); + + if (state.position === state.lineStart && testDocumentSeparator(state)) { + + if (0x2E/* . */ === state.input.charCodeAt(state.position)) { + state.position += 3; + skipSeparationSpace(state, true, -1); + } + return; + } + + if (state.position < (state.length - 1)) { + throwError(state, 'end of the stream or a document separator is expected'); + } else { + return; + } +} + + +function loadDocuments(input, options) { + input = String(input); + options = options || {}; + + if (0 !== input.length && + 0x0A/* LF */ !== input.charCodeAt(input.length - 1) && + 0x0D/* CR */ !== input.charCodeAt(input.length - 1)) { + input += '\n'; + } + + var state = new State(input, options); + + if (PATTERN_NON_PRINTABLE.test(state.input)) { + throwError(state, 'the stream contains non-printable characters'); + } + + // Use 0 as string terminator. That significantly simplifies bounds check. + state.input += '\0'; + + while (0x20/* Space */ === state.input.charCodeAt(state.position)) { + state.lineIndent += 1; + state.position += 1; + } + + while (state.position < (state.length - 1)) { + readDocument(state); + } + + return state.documents; +} + + +function loadAll(input, iterator, options) { + var documents = loadDocuments(input, options), index, length; + + for (index = 0, length = documents.length; index < length; index += 1) { + iterator(documents[index]); + } +} + + +function load(input, options) { + var documents = loadDocuments(input, options), index, length; + + if (0 === documents.length) { + return undefined; + } else if (1 === documents.length) { + return documents[0]; + } else { + throw new YAMLException('expected a single document in the stream, but found more'); + } +} + + +function safeLoadAll(input, output, options) { + loadAll(input, output, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options)); +} + + +function safeLoad(input, options) { + return load(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options)); +} + + +module.exports.loadAll = loadAll; +module.exports.load = load; +module.exports.safeLoadAll = safeLoadAll; +module.exports.safeLoad = safeLoad; + +},{"./common":4,"./exception":6,"./mark":8,"./schema/default_full":11,"./schema/default_safe":12}],8:[function(require,module,exports){ +'use strict'; + + +var common = require('./common'); + + +function Mark(name, buffer, position, line, column) { + this.name = name; + this.buffer = buffer; + this.position = position; + this.line = line; + this.column = column; +} + + +Mark.prototype.getSnippet = function getSnippet(indent, maxLength) { + var head, start, tail, end, snippet; + + if (!this.buffer) { + return null; + } + + indent = indent || 4; + maxLength = maxLength || 75; + + head = ''; + start = this.position; + + while (start > 0 && -1 === '\x00\r\n\x85\u2028\u2029'.indexOf(this.buffer.charAt(start - 1))) { + start -= 1; + if (this.position - start > (maxLength / 2 - 1)) { + head = ' ... '; + start += 5; + break; + } + } + + tail = ''; + end = this.position; + + while (end < this.buffer.length && -1 === '\x00\r\n\x85\u2028\u2029'.indexOf(this.buffer.charAt(end))) { + end += 1; + if (end - this.position > (maxLength / 2 - 1)) { + tail = ' ... '; + end -= 5; + break; + } + } + + snippet = this.buffer.slice(start, end); + + return common.repeat(' ', indent) + head + snippet + tail + '\n' + + common.repeat(' ', indent + this.position - start + head.length) + '^'; +}; + + +Mark.prototype.toString = function toString(compact) { + var snippet, where = ''; + + if (this.name) { + where += 'in "' + this.name + '" '; + } + + where += 'at line ' + (this.line + 1) + ', column ' + (this.column + 1); + + if (!compact) { + snippet = this.getSnippet(); + + if (snippet) { + where += ':\n' + snippet; + } + } + + return where; +}; + + +module.exports = Mark; + +},{"./common":4}],9:[function(require,module,exports){ +'use strict'; + + +var common = require('./common'); +var YAMLException = require('./exception'); +var Type = require('./type'); + + +function compileList(schema, name, result) { + var exclude = []; + + schema.include.forEach(function (includedSchema) { + result = compileList(includedSchema, name, result); + }); + + schema[name].forEach(function (currentType) { + result.forEach(function (previousType, previousIndex) { + if (previousType.tag === currentType.tag) { + exclude.push(previousIndex); + } + }); + + result.push(currentType); + }); + + return result.filter(function (type, index) { + return -1 === exclude.indexOf(index); + }); +} + + +function compileMap(/* lists... */) { + var result = {}, index, length; + + function collectType(type) { + result[type.tag] = type; + } + + for (index = 0, length = arguments.length; index < length; index += 1) { + arguments[index].forEach(collectType); + } + + return result; +} + + +function Schema(definition) { + this.include = definition.include || []; + this.implicit = definition.implicit || []; + this.explicit = definition.explicit || []; + + this.implicit.forEach(function (type) { + if (type.loadKind && 'scalar' !== type.loadKind) { + throw new YAMLException('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.'); + } + }); + + this.compiledImplicit = compileList(this, 'implicit', []); + this.compiledExplicit = compileList(this, 'explicit', []); + this.compiledTypeMap = compileMap(this.compiledImplicit, this.compiledExplicit); +} + + +Schema.DEFAULT = null; + + +Schema.create = function createSchema() { + var schemas, types; + + switch (arguments.length) { + case 1: + schemas = Schema.DEFAULT; + types = arguments[0]; + break; + + case 2: + schemas = arguments[0]; + types = arguments[1]; + break; + + default: + throw new YAMLException('Wrong number of arguments for Schema.create function'); + } + + schemas = common.toArray(schemas); + types = common.toArray(types); + + if (!schemas.every(function (schema) { return schema instanceof Schema; })) { + throw new YAMLException('Specified list of super schemas (or a single Schema object) contains a non-Schema object.'); + } + + if (!types.every(function (type) { return type instanceof Type; })) { + throw new YAMLException('Specified list of YAML types (or a single Type object) contains a non-Type object.'); + } + + return new Schema({ + include: schemas, + explicit: types + }); +}; + + +module.exports = Schema; + +},{"./common":4,"./exception":6,"./type":15}],10:[function(require,module,exports){ +// Standard YAML's Core schema. +// http://www.yaml.org/spec/1.2/spec.html#id2804923 +// +// NOTE: JS-YAML does not support schema-specific tag resolution restrictions. +// So, Core schema has no distinctions from JSON schema is JS-YAML. + + +'use strict'; + + +var Schema = require('../schema'); + + +module.exports = new Schema({ + include: [ + require('./json') + ] +}); + +},{"../schema":9,"./json":14}],11:[function(require,module,exports){ +// JS-YAML's default schema for `load` function. +// It is not described in the YAML specification. +// +// This schema is based on JS-YAML's default safe schema and includes +// JavaScript-specific types: !!js/undefined, !!js/regexp and !!js/function. +// +// Also this schema is used as default base schema at `Schema.create` function. + + +'use strict'; + + +var Schema = require('../schema'); + + +module.exports = Schema.DEFAULT = new Schema({ + include: [ + require('./default_safe') + ], + explicit: [ + require('../type/js/undefined'), + require('../type/js/regexp'), + require('../type/js/function') + ] +}); + +},{"../schema":9,"../type/js/function":20,"../type/js/regexp":21,"../type/js/undefined":22,"./default_safe":12}],12:[function(require,module,exports){ +// JS-YAML's default schema for `safeLoad` function. +// It is not described in the YAML specification. +// +// This schema is based on standard YAML's Core schema and includes most of +// extra types described at YAML tag repository. (http://yaml.org/type/) + + +'use strict'; + + +var Schema = require('../schema'); + + +module.exports = new Schema({ + include: [ + require('./core') + ], + implicit: [ + require('../type/timestamp'), + require('../type/merge') + ], + explicit: [ + require('../type/binary'), + require('../type/omap'), + require('../type/pairs'), + require('../type/set') + ] +}); + +},{"../schema":9,"../type/binary":16,"../type/merge":24,"../type/omap":26,"../type/pairs":27,"../type/set":29,"../type/timestamp":31,"./core":10}],13:[function(require,module,exports){ +// Standard YAML's Failsafe schema. +// http://www.yaml.org/spec/1.2/spec.html#id2802346 + + +'use strict'; + + +var Schema = require('../schema'); + + +module.exports = new Schema({ + explicit: [ + require('../type/str'), + require('../type/seq'), + require('../type/map') + ] +}); + +},{"../schema":9,"../type/map":23,"../type/seq":28,"../type/str":30}],14:[function(require,module,exports){ +// Standard YAML's JSON schema. +// http://www.yaml.org/spec/1.2/spec.html#id2803231 +// +// NOTE: JS-YAML does not support schema-specific tag resolution restrictions. +// So, this schema is not such strict as defined in the YAML specification. +// It allows numbers in binary notaion, use `Null` and `NULL` as `null`, etc. + + +'use strict'; + + +var Schema = require('../schema'); + + +module.exports = new Schema({ + include: [ + require('./failsafe') + ], + implicit: [ + require('../type/null'), + require('../type/bool'), + require('../type/int'), + require('../type/float') + ] +}); + +},{"../schema":9,"../type/bool":17,"../type/float":18,"../type/int":19,"../type/null":25,"./failsafe":13}],15:[function(require,module,exports){ +'use strict'; + +var YAMLException = require('./exception'); + +var TYPE_CONSTRUCTOR_OPTIONS = [ + 'kind', + 'resolve', + 'construct', + 'instanceOf', + 'predicate', + 'represent', + 'defaultStyle', + 'styleAliases' +]; + +var YAML_NODE_KINDS = [ + 'scalar', + 'sequence', + 'mapping' +]; + +function compileStyleAliases(map) { + var result = {}; + + if (null !== map) { + Object.keys(map).forEach(function (style) { + map[style].forEach(function (alias) { + result[String(alias)] = style; + }); + }); + } + + return result; +} + +function Type(tag, options) { + options = options || {}; + + Object.keys(options).forEach(function (name) { + if (-1 === TYPE_CONSTRUCTOR_OPTIONS.indexOf(name)) { + throw new YAMLException('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.'); + } + }); + + // TODO: Add tag format check. + this.tag = tag; + this.kind = options['kind'] || null; + this.resolve = options['resolve'] || function () { return true; }; + this.construct = options['construct'] || function (data) { return data; }; + this.instanceOf = options['instanceOf'] || null; + this.predicate = options['predicate'] || null; + this.represent = options['represent'] || null; + this.defaultStyle = options['defaultStyle'] || null; + this.styleAliases = compileStyleAliases(options['styleAliases'] || null); + + if (-1 === YAML_NODE_KINDS.indexOf(this.kind)) { + throw new YAMLException('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.'); + } +} + +module.exports = Type; + +},{"./exception":6}],16:[function(require,module,exports){ +'use strict'; + + +// A trick for browserified version. +// Since we make browserifier to ignore `buffer` module, NodeBuffer will be undefined +var NodeBuffer = require('buffer').Buffer; +var Type = require('../type'); + + +// [ 64, 65, 66 ] -> [ padding, CR, LF ] +var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r'; + + +function resolveYamlBinary(data) { + if (null === data) { + return false; + } + + var code, idx, bitlen = 0, len = 0, max = data.length, map = BASE64_MAP; + + // Convert one by one. + for (idx = 0; idx < max; idx ++) { + code = map.indexOf(data.charAt(idx)); + + // Skip CR/LF + if (code > 64) { continue; } + + // Fail on illegal characters + if (code < 0) { return false; } + + bitlen += 6; + } + + // If there are any bits left, source was corrupted + return (bitlen % 8) === 0; +} + +function constructYamlBinary(data) { + var code, idx, tailbits, + input = data.replace(/[\r\n=]/g, ''), // remove CR/LF & padding to simplify scan + max = input.length, + map = BASE64_MAP, + bits = 0, + result = []; + + // Collect by 6*4 bits (3 bytes) + + for (idx = 0; idx < max; idx++) { + if ((idx % 4 === 0) && idx) { + result.push((bits >> 16) & 0xFF); + result.push((bits >> 8) & 0xFF); + result.push(bits & 0xFF); + } + + bits = (bits << 6) | map.indexOf(input.charAt(idx)); + } + + // Dump tail + + tailbits = (max % 4)*6; + + if (tailbits === 0) { + result.push((bits >> 16) & 0xFF); + result.push((bits >> 8) & 0xFF); + result.push(bits & 0xFF); + } else if (tailbits === 18) { + result.push((bits >> 10) & 0xFF); + result.push((bits >> 2) & 0xFF); + } else if (tailbits === 12) { + result.push((bits >> 4) & 0xFF); + } + + // Wrap into Buffer for NodeJS and leave Array for browser + if (NodeBuffer) { + return new NodeBuffer(result); + } + + return result; +} + +function representYamlBinary(object /*, style*/) { + var result = '', bits = 0, idx, tail, + max = object.length, + map = BASE64_MAP; + + // Convert every three bytes to 4 ASCII characters. + + for (idx = 0; idx < max; idx++) { + if ((idx % 3 === 0) && idx) { + result += map[(bits >> 18) & 0x3F]; + result += map[(bits >> 12) & 0x3F]; + result += map[(bits >> 6) & 0x3F]; + result += map[bits & 0x3F]; + } + + bits = (bits << 8) + object[idx]; + } + + // Dump tail + + tail = max % 3; + + if (tail === 0) { + result += map[(bits >> 18) & 0x3F]; + result += map[(bits >> 12) & 0x3F]; + result += map[(bits >> 6) & 0x3F]; + result += map[bits & 0x3F]; + } else if (tail === 2) { + result += map[(bits >> 10) & 0x3F]; + result += map[(bits >> 4) & 0x3F]; + result += map[(bits << 2) & 0x3F]; + result += map[64]; + } else if (tail === 1) { + result += map[(bits >> 2) & 0x3F]; + result += map[(bits << 4) & 0x3F]; + result += map[64]; + result += map[64]; + } + + return result; +} + +function isBinary(object) { + return NodeBuffer && NodeBuffer.isBuffer(object); +} + +module.exports = new Type('tag:yaml.org,2002:binary', { + kind: 'scalar', + resolve: resolveYamlBinary, + construct: constructYamlBinary, + predicate: isBinary, + represent: representYamlBinary +}); + +},{"../type":15,"buffer":undefined}],17:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +function resolveYamlBoolean(data) { + if (null === data) { + return false; + } + + var max = data.length; + + return (max === 4 && (data === 'true' || data === 'True' || data === 'TRUE')) || + (max === 5 && (data === 'false' || data === 'False' || data === 'FALSE')); +} + +function constructYamlBoolean(data) { + return data === 'true' || + data === 'True' || + data === 'TRUE'; +} + +function isBoolean(object) { + return '[object Boolean]' === Object.prototype.toString.call(object); +} + +module.exports = new Type('tag:yaml.org,2002:bool', { + kind: 'scalar', + resolve: resolveYamlBoolean, + construct: constructYamlBoolean, + predicate: isBoolean, + represent: { + lowercase: function (object) { return object ? 'true' : 'false'; }, + uppercase: function (object) { return object ? 'TRUE' : 'FALSE'; }, + camelcase: function (object) { return object ? 'True' : 'False'; } + }, + defaultStyle: 'lowercase' +}); + +},{"../type":15}],18:[function(require,module,exports){ +'use strict'; + +var common = require('../common'); +var Type = require('../type'); + +var YAML_FLOAT_PATTERN = new RegExp( + '^(?:[-+]?(?:[0-9][0-9_]*)\\.[0-9_]*(?:[eE][-+][0-9]+)?' + + '|\\.[0-9_]+(?:[eE][-+][0-9]+)?' + + '|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\.[0-9_]*' + + '|[-+]?\\.(?:inf|Inf|INF)' + + '|\\.(?:nan|NaN|NAN))$'); + +function resolveYamlFloat(data) { + if (null === data) { + return false; + } + + var value, sign, base, digits; + + if (!YAML_FLOAT_PATTERN.test(data)) { + return false; + } + return true; +} + +function constructYamlFloat(data) { + var value, sign, base, digits; + + value = data.replace(/_/g, '').toLowerCase(); + sign = '-' === value[0] ? -1 : 1; + digits = []; + + if (0 <= '+-'.indexOf(value[0])) { + value = value.slice(1); + } + + if ('.inf' === value) { + return (1 === sign) ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY; + + } else if ('.nan' === value) { + return NaN; + + } else if (0 <= value.indexOf(':')) { + value.split(':').forEach(function (v) { + digits.unshift(parseFloat(v, 10)); + }); + + value = 0.0; + base = 1; + + digits.forEach(function (d) { + value += d * base; + base *= 60; + }); + + return sign * value; + + } else { + return sign * parseFloat(value, 10); + } +} + +function representYamlFloat(object, style) { + if (isNaN(object)) { + switch (style) { + case 'lowercase': + return '.nan'; + case 'uppercase': + return '.NAN'; + case 'camelcase': + return '.NaN'; + } + } else if (Number.POSITIVE_INFINITY === object) { + switch (style) { + case 'lowercase': + return '.inf'; + case 'uppercase': + return '.INF'; + case 'camelcase': + return '.Inf'; + } + } else if (Number.NEGATIVE_INFINITY === object) { + switch (style) { + case 'lowercase': + return '-.inf'; + case 'uppercase': + return '-.INF'; + case 'camelcase': + return '-.Inf'; + } + } else if (common.isNegativeZero(object)) { + return '-0.0'; + } else { + return object.toString(10); + } +} + +function isFloat(object) { + return ('[object Number]' === Object.prototype.toString.call(object)) && + (0 !== object % 1 || common.isNegativeZero(object)); +} + +module.exports = new Type('tag:yaml.org,2002:float', { + kind: 'scalar', + resolve: resolveYamlFloat, + construct: constructYamlFloat, + predicate: isFloat, + represent: representYamlFloat, + defaultStyle: 'lowercase' +}); + +},{"../common":4,"../type":15}],19:[function(require,module,exports){ +'use strict'; + +var common = require('../common'); +var Type = require('../type'); + +function isHexCode(c) { + return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) || + ((0x41/* A */ <= c) && (c <= 0x46/* F */)) || + ((0x61/* a */ <= c) && (c <= 0x66/* f */)); +} + +function isOctCode(c) { + return ((0x30/* 0 */ <= c) && (c <= 0x37/* 7 */)); +} + +function isDecCode(c) { + return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)); +} + +function resolveYamlInteger(data) { + if (null === data) { + return false; + } + + var max = data.length, + index = 0, + hasDigits = false, + ch; + + if (!max) { return false; } + + ch = data[index]; + + // sign + if (ch === '-' || ch === '+') { + ch = data[++index]; + } + + if (ch === '0') { + // 0 + if (index+1 === max) { return true; } + ch = data[++index]; + + // base 2, base 8, base 16 + + if (ch === 'b') { + // base 2 + index++; + + for (; index < max; index++) { + ch = data[index]; + if (ch === '_') { continue; } + if (ch !== '0' && ch !== '1') { + return false; + } + hasDigits = true; + } + return hasDigits; + } + + + if (ch === 'x') { + // base 16 + index++; + + for (; index < max; index++) { + ch = data[index]; + if (ch === '_') { continue; } + if (!isHexCode(data.charCodeAt(index))) { + return false; + } + hasDigits = true; + } + return hasDigits; + } + + // base 8 + for (; index < max; index++) { + ch = data[index]; + if (ch === '_') { continue; } + if (!isOctCode(data.charCodeAt(index))) { + return false; + } + hasDigits = true; + } + return hasDigits; + } + + // base 10 (except 0) or base 60 + + for (; index < max; index++) { + ch = data[index]; + if (ch === '_') { continue; } + if (ch === ':') { break; } + if (!isDecCode(data.charCodeAt(index))) { + return false; + } + hasDigits = true; + } + + if (!hasDigits) { return false; } + + // if !base60 - done; + if (ch !== ':') { return true; } + + // base60 almost not used, no needs to optimize + return /^(:[0-5]?[0-9])+$/.test(data.slice(index)); +} + +function constructYamlInteger(data) { + var value = data, sign = 1, ch, base, digits = []; + + if (value.indexOf('_') !== -1) { + value = value.replace(/_/g, ''); + } + + ch = value[0]; + + if (ch === '-' || ch === '+') { + if (ch === '-') { sign = -1; } + value = value.slice(1); + ch = value[0]; + } + + if ('0' === value) { + return 0; + } + + if (ch === '0') { + if (value[1] === 'b') { + return sign * parseInt(value.slice(2), 2); + } + if (value[1] === 'x') { + return sign * parseInt(value, 16); + } + return sign * parseInt(value, 8); + + } + + if (value.indexOf(':') !== -1) { + value.split(':').forEach(function (v) { + digits.unshift(parseInt(v, 10)); + }); + + value = 0; + base = 1; + + digits.forEach(function (d) { + value += (d * base); + base *= 60; + }); + + return sign * value; + + } + + return sign * parseInt(value, 10); +} + +function isInteger(object) { + return ('[object Number]' === Object.prototype.toString.call(object)) && + (0 === object % 1 && !common.isNegativeZero(object)); +} + +module.exports = new Type('tag:yaml.org,2002:int', { + kind: 'scalar', + resolve: resolveYamlInteger, + construct: constructYamlInteger, + predicate: isInteger, + represent: { + binary: function (object) { return '0b' + object.toString(2); }, + octal: function (object) { return '0' + object.toString(8); }, + decimal: function (object) { return object.toString(10); }, + hexadecimal: function (object) { return '0x' + object.toString(16).toUpperCase(); } + }, + defaultStyle: 'decimal', + styleAliases: { + binary: [ 2, 'bin' ], + octal: [ 8, 'oct' ], + decimal: [ 10, 'dec' ], + hexadecimal: [ 16, 'hex' ] + } +}); + +},{"../common":4,"../type":15}],20:[function(require,module,exports){ +'use strict'; + +var esprima; + +// Browserified version does not have esprima +// +// 1. For node.js just require module as deps +// 2. For browser try to require mudule via external AMD system. +// If not found - try to fallback to window.esprima. If not +// found too - then fail to parse. +// +try { + esprima = require('esprima'); +} catch (_) { + /*global window */ + if (typeof window !== 'undefined') { esprima = window.esprima; } +} + +var Type = require('../../type'); + +function resolveJavascriptFunction(data) { + if (null === data) { + return false; + } + + try { + var source = '(' + data + ')', + ast = esprima.parse(source, { range: true }), + params = [], + body; + + if ('Program' !== ast.type || + 1 !== ast.body.length || + 'ExpressionStatement' !== ast.body[0].type || + 'FunctionExpression' !== ast.body[0].expression.type) { + return false; + } + + return true; + } catch (err) { + return false; + } +} + +function constructJavascriptFunction(data) { + /*jslint evil:true*/ + + var source = '(' + data + ')', + ast = esprima.parse(source, { range: true }), + params = [], + body; + + if ('Program' !== ast.type || + 1 !== ast.body.length || + 'ExpressionStatement' !== ast.body[0].type || + 'FunctionExpression' !== ast.body[0].expression.type) { + throw new Error('Failed to resolve function'); + } + + ast.body[0].expression.params.forEach(function (param) { + params.push(param.name); + }); + + body = ast.body[0].expression.body.range; + + // Esprima's ranges include the first '{' and the last '}' characters on + // function expressions. So cut them out. + return new Function(params, source.slice(body[0]+1, body[1]-1)); +} + +function representJavascriptFunction(object /*, style*/) { + return object.toString(); +} + +function isFunction(object) { + return '[object Function]' === Object.prototype.toString.call(object); +} + +module.exports = new Type('tag:yaml.org,2002:js/function', { + kind: 'scalar', + resolve: resolveJavascriptFunction, + construct: constructJavascriptFunction, + predicate: isFunction, + represent: representJavascriptFunction +}); + +},{"../../type":15,"esprima":32}],21:[function(require,module,exports){ +'use strict'; + +var Type = require('../../type'); + +function resolveJavascriptRegExp(data) { + if (null === data) { + return false; + } + + if (0 === data.length) { + return false; + } + + var regexp = data, + tail = /\/([gim]*)$/.exec(data), + modifiers = ''; + + // if regexp starts with '/' it can have modifiers and must be properly closed + // `/foo/gim` - modifiers tail can be maximum 3 chars + if ('/' === regexp[0]) { + if (tail) { + modifiers = tail[1]; + } + + if (modifiers.length > 3) { return false; } + // if expression starts with /, is should be properly terminated + if (regexp[regexp.length - modifiers.length - 1] !== '/') { return false; } + + regexp = regexp.slice(1, regexp.length - modifiers.length - 1); + } + + try { + var dummy = new RegExp(regexp, modifiers); + return true; + } catch (error) { + return false; + } +} + +function constructJavascriptRegExp(data) { + var regexp = data, + tail = /\/([gim]*)$/.exec(data), + modifiers = ''; + + // `/foo/gim` - tail can be maximum 4 chars + if ('/' === regexp[0]) { + if (tail) { + modifiers = tail[1]; + } + regexp = regexp.slice(1, regexp.length - modifiers.length - 1); + } + + return new RegExp(regexp, modifiers); +} + +function representJavascriptRegExp(object /*, style*/) { + var result = '/' + object.source + '/'; + + if (object.global) { + result += 'g'; + } + + if (object.multiline) { + result += 'm'; + } + + if (object.ignoreCase) { + result += 'i'; + } + + return result; +} + +function isRegExp(object) { + return '[object RegExp]' === Object.prototype.toString.call(object); +} + +module.exports = new Type('tag:yaml.org,2002:js/regexp', { + kind: 'scalar', + resolve: resolveJavascriptRegExp, + construct: constructJavascriptRegExp, + predicate: isRegExp, + represent: representJavascriptRegExp +}); + +},{"../../type":15}],22:[function(require,module,exports){ +'use strict'; + +var Type = require('../../type'); + +function resolveJavascriptUndefined() { + return true; +} + +function constructJavascriptUndefined() { + return undefined; +} + +function representJavascriptUndefined() { + return ''; +} + +function isUndefined(object) { + return 'undefined' === typeof object; +} + +module.exports = new Type('tag:yaml.org,2002:js/undefined', { + kind: 'scalar', + resolve: resolveJavascriptUndefined, + construct: constructJavascriptUndefined, + predicate: isUndefined, + represent: representJavascriptUndefined +}); + +},{"../../type":15}],23:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +module.exports = new Type('tag:yaml.org,2002:map', { + kind: 'mapping', + construct: function (data) { return null !== data ? data : {}; } +}); + +},{"../type":15}],24:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +function resolveYamlMerge(data) { + return '<<' === data || null === data; +} + +module.exports = new Type('tag:yaml.org,2002:merge', { + kind: 'scalar', + resolve: resolveYamlMerge +}); + +},{"../type":15}],25:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +function resolveYamlNull(data) { + if (null === data) { + return true; + } + + var max = data.length; + + return (max === 1 && data === '~') || + (max === 4 && (data === 'null' || data === 'Null' || data === 'NULL')); +} + +function constructYamlNull() { + return null; +} + +function isNull(object) { + return null === object; +} + +module.exports = new Type('tag:yaml.org,2002:null', { + kind: 'scalar', + resolve: resolveYamlNull, + construct: constructYamlNull, + predicate: isNull, + represent: { + canonical: function () { return '~'; }, + lowercase: function () { return 'null'; }, + uppercase: function () { return 'NULL'; }, + camelcase: function () { return 'Null'; } + }, + defaultStyle: 'lowercase' +}); + +},{"../type":15}],26:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +var _hasOwnProperty = Object.prototype.hasOwnProperty; +var _toString = Object.prototype.toString; + +function resolveYamlOmap(data) { + if (null === data) { + return true; + } + + var objectKeys = [], index, length, pair, pairKey, pairHasKey, + object = data; + + for (index = 0, length = object.length; index < length; index += 1) { + pair = object[index]; + pairHasKey = false; + + if ('[object Object]' !== _toString.call(pair)) { + return false; + } + + for (pairKey in pair) { + if (_hasOwnProperty.call(pair, pairKey)) { + if (!pairHasKey) { + pairHasKey = true; + } else { + return false; + } + } + } + + if (!pairHasKey) { + return false; + } + + if (-1 === objectKeys.indexOf(pairKey)) { + objectKeys.push(pairKey); + } else { + return false; + } + } + + return true; +} + +function constructYamlOmap(data) { + return null !== data ? data : []; +} + +module.exports = new Type('tag:yaml.org,2002:omap', { + kind: 'sequence', + resolve: resolveYamlOmap, + construct: constructYamlOmap +}); + +},{"../type":15}],27:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +var _toString = Object.prototype.toString; + +function resolveYamlPairs(data) { + if (null === data) { + return true; + } + + var index, length, pair, keys, result, + object = data; + + result = new Array(object.length); + + for (index = 0, length = object.length; index < length; index += 1) { + pair = object[index]; + + if ('[object Object]' !== _toString.call(pair)) { + return false; + } + + keys = Object.keys(pair); + + if (1 !== keys.length) { + return false; + } + + result[index] = [ keys[0], pair[keys[0]] ]; + } + + return true; +} + +function constructYamlPairs(data) { + if (null === data) { + return []; + } + + var index, length, pair, keys, result, + object = data; + + result = new Array(object.length); + + for (index = 0, length = object.length; index < length; index += 1) { + pair = object[index]; + + keys = Object.keys(pair); + + result[index] = [ keys[0], pair[keys[0]] ]; + } + + return result; +} + +module.exports = new Type('tag:yaml.org,2002:pairs', { + kind: 'sequence', + resolve: resolveYamlPairs, + construct: constructYamlPairs +}); + +},{"../type":15}],28:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +module.exports = new Type('tag:yaml.org,2002:seq', { + kind: 'sequence', + construct: function (data) { return null !== data ? data : []; } +}); + +},{"../type":15}],29:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +var _hasOwnProperty = Object.prototype.hasOwnProperty; + +function resolveYamlSet(data) { + if (null === data) { + return true; + } + + var key, object = data; + + for (key in object) { + if (_hasOwnProperty.call(object, key)) { + if (null !== object[key]) { + return false; + } + } + } + + return true; +} + +function constructYamlSet(data) { + return null !== data ? data : {}; +} + +module.exports = new Type('tag:yaml.org,2002:set', { + kind: 'mapping', + resolve: resolveYamlSet, + construct: constructYamlSet +}); + +},{"../type":15}],30:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +module.exports = new Type('tag:yaml.org,2002:str', { + kind: 'scalar', + construct: function (data) { return null !== data ? data : ''; } +}); + +},{"../type":15}],31:[function(require,module,exports){ +'use strict'; + +var Type = require('../type'); + +var YAML_TIMESTAMP_REGEXP = new RegExp( + '^([0-9][0-9][0-9][0-9])' + // [1] year + '-([0-9][0-9]?)' + // [2] month + '-([0-9][0-9]?)' + // [3] day + '(?:(?:[Tt]|[ \\t]+)' + // ... + '([0-9][0-9]?)' + // [4] hour + ':([0-9][0-9])' + // [5] minute + ':([0-9][0-9])' + // [6] second + '(?:\\.([0-9]*))?' + // [7] fraction + '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour + '(?::([0-9][0-9]))?))?)?$'); // [11] tz_minute + +function resolveYamlTimestamp(data) { + if (null === data) { + return false; + } + + var match, year, month, day, hour, minute, second, fraction = 0, + delta = null, tz_hour, tz_minute, date; + + match = YAML_TIMESTAMP_REGEXP.exec(data); + + if (null === match) { + return false; + } + + return true; +} + +function constructYamlTimestamp(data) { + var match, year, month, day, hour, minute, second, fraction = 0, + delta = null, tz_hour, tz_minute, date; + + match = YAML_TIMESTAMP_REGEXP.exec(data); + + if (null === match) { + throw new Error('Date resolve error'); + } + + // match: [1] year [2] month [3] day + + year = +(match[1]); + month = +(match[2]) - 1; // JS month starts with 0 + day = +(match[3]); + + if (!match[4]) { // no hour + return new Date(Date.UTC(year, month, day)); + } + + // match: [4] hour [5] minute [6] second [7] fraction + + hour = +(match[4]); + minute = +(match[5]); + second = +(match[6]); + + if (match[7]) { + fraction = match[7].slice(0, 3); + while (fraction.length < 3) { // milli-seconds + fraction += '0'; + } + fraction = +fraction; + } + + // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute + + if (match[9]) { + tz_hour = +(match[10]); + tz_minute = +(match[11] || 0); + delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds + if ('-' === match[9]) { + delta = -delta; + } + } + + date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction)); + + if (delta) { + date.setTime(date.getTime() - delta); + } + + return date; +} + +function representYamlTimestamp(object /*, style*/) { + return object.toISOString(); +} + +module.exports = new Type('tag:yaml.org,2002:timestamp', { + kind: 'scalar', + resolve: resolveYamlTimestamp, + construct: constructYamlTimestamp, + instanceOf: Date, + represent: representYamlTimestamp +}); + +},{"../type":15}],32:[function(require,module,exports){ +/* + Copyright (C) 2013 Ariya Hidayat + Copyright (C) 2013 Thaddee Tyl + Copyright (C) 2013 Mathias Bynens + Copyright (C) 2012 Ariya Hidayat + Copyright (C) 2012 Mathias Bynens + Copyright (C) 2012 Joost-Wim Boekesteijn + Copyright (C) 2012 Kris Kowal + Copyright (C) 2012 Yusuke Suzuki + Copyright (C) 2012 Arpad Borsos + Copyright (C) 2011 Ariya Hidayat + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + 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 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. +*/ + +(function (root, factory) { + 'use strict'; + + // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, + // Rhino, and plain browser loading. + + /* istanbul ignore next */ + if (typeof define === 'function' && define.amd) { + define(['exports'], factory); + } else if (typeof exports !== 'undefined') { + factory(exports); + } else { + factory((root.esprima = {})); + } +}(this, function (exports) { + 'use strict'; + + var Token, + TokenName, + FnExprTokens, + Syntax, + PlaceHolders, + PropertyKind, + Messages, + Regex, + source, + strict, + index, + lineNumber, + lineStart, + length, + lookahead, + state, + extra; + + Token = { + BooleanLiteral: 1, + EOF: 2, + Identifier: 3, + Keyword: 4, + NullLiteral: 5, + NumericLiteral: 6, + Punctuator: 7, + StringLiteral: 8, + RegularExpression: 9 + }; + + TokenName = {}; + TokenName[Token.BooleanLiteral] = 'Boolean'; + TokenName[Token.EOF] = ''; + TokenName[Token.Identifier] = 'Identifier'; + TokenName[Token.Keyword] = 'Keyword'; + TokenName[Token.NullLiteral] = 'Null'; + TokenName[Token.NumericLiteral] = 'Numeric'; + TokenName[Token.Punctuator] = 'Punctuator'; + TokenName[Token.StringLiteral] = 'String'; + TokenName[Token.RegularExpression] = 'RegularExpression'; + + // A function following one of those tokens is an expression. + FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new', + 'return', 'case', 'delete', 'throw', 'void', + // assignment operators + '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=', + '&=', '|=', '^=', ',', + // binary/unary operators + '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&', + '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=', + '<=', '<', '>', '!=', '!==']; + + Syntax = { + AssignmentExpression: 'AssignmentExpression', + ArrayExpression: 'ArrayExpression', + ArrowFunctionExpression: 'ArrowFunctionExpression', + BlockStatement: 'BlockStatement', + BinaryExpression: 'BinaryExpression', + BreakStatement: 'BreakStatement', + CallExpression: 'CallExpression', + CatchClause: 'CatchClause', + ConditionalExpression: 'ConditionalExpression', + ContinueStatement: 'ContinueStatement', + DoWhileStatement: 'DoWhileStatement', + DebuggerStatement: 'DebuggerStatement', + EmptyStatement: 'EmptyStatement', + ExpressionStatement: 'ExpressionStatement', + ForStatement: 'ForStatement', + ForInStatement: 'ForInStatement', + FunctionDeclaration: 'FunctionDeclaration', + FunctionExpression: 'FunctionExpression', + Identifier: 'Identifier', + IfStatement: 'IfStatement', + Literal: 'Literal', + LabeledStatement: 'LabeledStatement', + LogicalExpression: 'LogicalExpression', + MemberExpression: 'MemberExpression', + NewExpression: 'NewExpression', + ObjectExpression: 'ObjectExpression', + Program: 'Program', + Property: 'Property', + ReturnStatement: 'ReturnStatement', + SequenceExpression: 'SequenceExpression', + SwitchStatement: 'SwitchStatement', + SwitchCase: 'SwitchCase', + ThisExpression: 'ThisExpression', + ThrowStatement: 'ThrowStatement', + TryStatement: 'TryStatement', + UnaryExpression: 'UnaryExpression', + UpdateExpression: 'UpdateExpression', + VariableDeclaration: 'VariableDeclaration', + VariableDeclarator: 'VariableDeclarator', + WhileStatement: 'WhileStatement', + WithStatement: 'WithStatement' + }; + + PlaceHolders = { + ArrowParameterPlaceHolder: { + type: 'ArrowParameterPlaceHolder' + } + }; + + PropertyKind = { + Data: 1, + Get: 2, + Set: 4 + }; + + // Error messages should be identical to V8. + Messages = { + UnexpectedToken: 'Unexpected token %0', + UnexpectedNumber: 'Unexpected number', + UnexpectedString: 'Unexpected string', + UnexpectedIdentifier: 'Unexpected identifier', + UnexpectedReserved: 'Unexpected reserved word', + UnexpectedEOS: 'Unexpected end of input', + NewlineAfterThrow: 'Illegal newline after throw', + InvalidRegExp: 'Invalid regular expression', + UnterminatedRegExp: 'Invalid regular expression: missing /', + InvalidLHSInAssignment: 'Invalid left-hand side in assignment', + InvalidLHSInForIn: 'Invalid left-hand side in for-in', + MultipleDefaultsInSwitch: 'More than one default clause in switch statement', + NoCatchOrFinally: 'Missing catch or finally after try', + UnknownLabel: 'Undefined label \'%0\'', + Redeclaration: '%0 \'%1\' has already been declared', + IllegalContinue: 'Illegal continue statement', + IllegalBreak: 'Illegal break statement', + IllegalReturn: 'Illegal return statement', + StrictModeWith: 'Strict mode code may not include a with statement', + StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode', + StrictVarName: 'Variable name may not be eval or arguments in strict mode', + StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode', + StrictParamDupe: 'Strict mode function may not have duplicate parameter names', + StrictFunctionName: 'Function name may not be eval or arguments in strict mode', + StrictOctalLiteral: 'Octal literals are not allowed in strict mode.', + StrictDelete: 'Delete of an unqualified identifier in strict mode.', + StrictDuplicateProperty: 'Duplicate data property in object literal not allowed in strict mode', + AccessorDataProperty: 'Object literal may not have data and accessor property with the same name', + AccessorGetSet: 'Object literal may not have multiple get/set accessors with the same name', + StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode', + StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode', + StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode', + StrictReservedWord: 'Use of future reserved word in strict mode' + }; + + // See also tools/generate-unicode-regex.py. + Regex = { + NonAsciiIdentifierStart: new RegExp('[\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-\u08B2\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\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\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\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\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\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-\uAB5F\uAB64\uAB65\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]'), + NonAsciiIdentifierPart: new 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\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]') + }; + + // Ensure the condition is true, otherwise throw an error. + // This is only to have a better contract semantic, i.e. another safety net + // to catch a logic error. The condition shall be fulfilled in normal case. + // Do NOT use this to enforce a certain condition on any user input. + + function assert(condition, message) { + /* istanbul ignore if */ + if (!condition) { + throw new Error('ASSERT: ' + message); + } + } + + function isDecimalDigit(ch) { + return (ch >= 0x30 && ch <= 0x39); // 0..9 + } + + function isHexDigit(ch) { + return '0123456789abcdefABCDEF'.indexOf(ch) >= 0; + } + + function isOctalDigit(ch) { + return '01234567'.indexOf(ch) >= 0; + } + + + // 7.2 White Space + + function isWhiteSpace(ch) { + return (ch === 0x20) || (ch === 0x09) || (ch === 0x0B) || (ch === 0x0C) || (ch === 0xA0) || + (ch >= 0x1680 && [0x1680, 0x180E, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(ch) >= 0); + } + + // 7.3 Line Terminators + + function isLineTerminator(ch) { + return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029); + } + + // 7.6 Identifier Names and Identifiers + + function isIdentifierStart(ch) { + return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore) + (ch >= 0x41 && ch <= 0x5A) || // A..Z + (ch >= 0x61 && ch <= 0x7A) || // a..z + (ch === 0x5C) || // \ (backslash) + ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch))); + } + + function isIdentifierPart(ch) { + return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore) + (ch >= 0x41 && ch <= 0x5A) || // A..Z + (ch >= 0x61 && ch <= 0x7A) || // a..z + (ch >= 0x30 && ch <= 0x39) || // 0..9 + (ch === 0x5C) || // \ (backslash) + ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch))); + } + + // 7.6.1.2 Future Reserved Words + + function isFutureReservedWord(id) { + switch (id) { + case 'class': + case 'enum': + case 'export': + case 'extends': + case 'import': + case 'super': + return true; + default: + return false; + } + } + + function isStrictModeReservedWord(id) { + switch (id) { + case 'implements': + case 'interface': + case 'package': + case 'private': + case 'protected': + case 'public': + case 'static': + case 'yield': + case 'let': + return true; + default: + return false; + } + } + + function isRestrictedWord(id) { + return id === 'eval' || id === 'arguments'; + } + + // 7.6.1.1 Keywords + + function isKeyword(id) { + if (strict && isStrictModeReservedWord(id)) { + return true; + } + + // 'const' is specialized as Keyword in V8. + // 'yield' and 'let' are for compatibility with SpiderMonkey and ES.next. + // Some others are from future reserved words. + + switch (id.length) { + case 2: + return (id === 'if') || (id === 'in') || (id === 'do'); + case 3: + return (id === 'var') || (id === 'for') || (id === 'new') || + (id === 'try') || (id === 'let'); + case 4: + return (id === 'this') || (id === 'else') || (id === 'case') || + (id === 'void') || (id === 'with') || (id === 'enum'); + case 5: + return (id === 'while') || (id === 'break') || (id === 'catch') || + (id === 'throw') || (id === 'const') || (id === 'yield') || + (id === 'class') || (id === 'super'); + case 6: + return (id === 'return') || (id === 'typeof') || (id === 'delete') || + (id === 'switch') || (id === 'export') || (id === 'import'); + case 7: + return (id === 'default') || (id === 'finally') || (id === 'extends'); + case 8: + return (id === 'function') || (id === 'continue') || (id === 'debugger'); + case 10: + return (id === 'instanceof'); + default: + return false; + } + } + + // 7.4 Comments + + function addComment(type, value, start, end, loc) { + var comment; + + assert(typeof start === 'number', 'Comment must have valid position'); + + // Because the way the actual token is scanned, often the comments + // (if any) are skipped twice during the lexical analysis. + // Thus, we need to skip adding a comment if the comment array already + // handled it. + if (state.lastCommentStart >= start) { + return; + } + state.lastCommentStart = start; + + comment = { + type: type, + value: value + }; + if (extra.range) { + comment.range = [start, end]; + } + if (extra.loc) { + comment.loc = loc; + } + extra.comments.push(comment); + if (extra.attachComment) { + extra.leadingComments.push(comment); + extra.trailingComments.push(comment); + } + } + + function skipSingleLineComment(offset) { + var start, loc, ch, comment; + + start = index - offset; + loc = { + start: { + line: lineNumber, + column: index - lineStart - offset + } + }; + + while (index < length) { + ch = source.charCodeAt(index); + ++index; + if (isLineTerminator(ch)) { + if (extra.comments) { + comment = source.slice(start + offset, index - 1); + loc.end = { + line: lineNumber, + column: index - lineStart - 1 + }; + addComment('Line', comment, start, index - 1, loc); + } + if (ch === 13 && source.charCodeAt(index) === 10) { + ++index; + } + ++lineNumber; + lineStart = index; + return; + } + } + + if (extra.comments) { + comment = source.slice(start + offset, index); + loc.end = { + line: lineNumber, + column: index - lineStart + }; + addComment('Line', comment, start, index, loc); + } + } + + function skipMultiLineComment() { + var start, loc, ch, comment; + + if (extra.comments) { + start = index - 2; + loc = { + start: { + line: lineNumber, + column: index - lineStart - 2 + } + }; + } + + while (index < length) { + ch = source.charCodeAt(index); + if (isLineTerminator(ch)) { + if (ch === 0x0D && source.charCodeAt(index + 1) === 0x0A) { + ++index; + } + ++lineNumber; + ++index; + lineStart = index; + if (index >= length) { + throwUnexpectedToken(); + } + } else if (ch === 0x2A) { + // Block comment ends with '*/'. + if (source.charCodeAt(index + 1) === 0x2F) { + ++index; + ++index; + if (extra.comments) { + comment = source.slice(start + 2, index - 2); + loc.end = { + line: lineNumber, + column: index - lineStart + }; + addComment('Block', comment, start, index, loc); + } + return; + } + ++index; + } else { + ++index; + } + } + + throwUnexpectedToken(); + } + + function skipComment() { + var ch, start; + + start = (index === 0); + while (index < length) { + ch = source.charCodeAt(index); + + if (isWhiteSpace(ch)) { + ++index; + } else if (isLineTerminator(ch)) { + ++index; + if (ch === 0x0D && source.charCodeAt(index) === 0x0A) { + ++index; + } + ++lineNumber; + lineStart = index; + start = true; + } else if (ch === 0x2F) { // U+002F is '/' + ch = source.charCodeAt(index + 1); + if (ch === 0x2F) { + ++index; + ++index; + skipSingleLineComment(2); + start = true; + } else if (ch === 0x2A) { // U+002A is '*' + ++index; + ++index; + skipMultiLineComment(); + } else { + break; + } + } else if (start && ch === 0x2D) { // U+002D is '-' + // U+003E is '>' + if ((source.charCodeAt(index + 1) === 0x2D) && (source.charCodeAt(index + 2) === 0x3E)) { + // '-->' is a single-line comment + index += 3; + skipSingleLineComment(3); + } else { + break; + } + } else if (ch === 0x3C) { // U+003C is '<' + if (source.slice(index + 1, index + 4) === '!--') { + ++index; // `<` + ++index; // `!` + ++index; // `-` + ++index; // `-` + skipSingleLineComment(4); + } else { + break; + } + } else { + break; + } + } + } + + function scanHexEscape(prefix) { + var i, len, ch, code = 0; + + len = (prefix === 'u') ? 4 : 2; + for (i = 0; i < len; ++i) { + if (index < length && isHexDigit(source[index])) { + ch = source[index++]; + code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase()); + } else { + return ''; + } + } + return String.fromCharCode(code); + } + + function scanUnicodeCodePointEscape() { + var ch, code, cu1, cu2; + + ch = source[index]; + code = 0; + + // At least, one hex digit is required. + if (ch === '}') { + throwUnexpectedToken(); + } + + while (index < length) { + ch = source[index++]; + if (!isHexDigit(ch)) { + break; + } + code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase()); + } + + if (code > 0x10FFFF || ch !== '}') { + throwUnexpectedToken(); + } + + // UTF-16 Encoding + if (code <= 0xFFFF) { + return String.fromCharCode(code); + } + cu1 = ((code - 0x10000) >> 10) + 0xD800; + cu2 = ((code - 0x10000) & 1023) + 0xDC00; + return String.fromCharCode(cu1, cu2); + } + + function getEscapedIdentifier() { + var ch, id; + + ch = source.charCodeAt(index++); + id = String.fromCharCode(ch); + + // '\u' (U+005C, U+0075) denotes an escaped character. + if (ch === 0x5C) { + if (source.charCodeAt(index) !== 0x75) { + throwUnexpectedToken(); + } + ++index; + ch = scanHexEscape('u'); + if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) { + throwUnexpectedToken(); + } + id = ch; + } + + while (index < length) { + ch = source.charCodeAt(index); + if (!isIdentifierPart(ch)) { + break; + } + ++index; + id += String.fromCharCode(ch); + + // '\u' (U+005C, U+0075) denotes an escaped character. + if (ch === 0x5C) { + id = id.substr(0, id.length - 1); + if (source.charCodeAt(index) !== 0x75) { + throwUnexpectedToken(); + } + ++index; + ch = scanHexEscape('u'); + if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) { + throwUnexpectedToken(); + } + id += ch; + } + } + + return id; + } + + function getIdentifier() { + var start, ch; + + start = index++; + while (index < length) { + ch = source.charCodeAt(index); + if (ch === 0x5C) { + // Blackslash (U+005C) marks Unicode escape sequence. + index = start; + return getEscapedIdentifier(); + } + if (isIdentifierPart(ch)) { + ++index; + } else { + break; + } + } + + return source.slice(start, index); + } + + function scanIdentifier() { + var start, id, type; + + start = index; + + // Backslash (U+005C) starts an escaped character. + id = (source.charCodeAt(index) === 0x5C) ? getEscapedIdentifier() : getIdentifier(); + + // There is no keyword or literal with only one character. + // Thus, it must be an identifier. + if (id.length === 1) { + type = Token.Identifier; + } else if (isKeyword(id)) { + type = Token.Keyword; + } else if (id === 'null') { + type = Token.NullLiteral; + } else if (id === 'true' || id === 'false') { + type = Token.BooleanLiteral; + } else { + type = Token.Identifier; + } + + return { + type: type, + value: id, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + + // 7.7 Punctuators + + function scanPunctuator() { + var start = index, + code = source.charCodeAt(index), + code2, + ch1 = source[index], + ch2, + ch3, + ch4; + + switch (code) { + + // Check for most common single-character punctuators. + case 0x2E: // . dot + case 0x28: // ( open bracket + case 0x29: // ) close bracket + case 0x3B: // ; semicolon + case 0x2C: // , comma + case 0x7B: // { open curly brace + case 0x7D: // } close curly brace + case 0x5B: // [ + case 0x5D: // ] + case 0x3A: // : + case 0x3F: // ? + case 0x7E: // ~ + ++index; + if (extra.tokenize) { + if (code === 0x28) { + extra.openParenToken = extra.tokens.length; + } else if (code === 0x7B) { + extra.openCurlyToken = extra.tokens.length; + } + } + return { + type: Token.Punctuator, + value: String.fromCharCode(code), + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + + default: + code2 = source.charCodeAt(index + 1); + + // '=' (U+003D) marks an assignment or comparison operator. + if (code2 === 0x3D) { + switch (code) { + case 0x2B: // + + case 0x2D: // - + case 0x2F: // / + case 0x3C: // < + case 0x3E: // > + case 0x5E: // ^ + case 0x7C: // | + case 0x25: // % + case 0x26: // & + case 0x2A: // * + index += 2; + return { + type: Token.Punctuator, + value: String.fromCharCode(code) + String.fromCharCode(code2), + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + + case 0x21: // ! + case 0x3D: // = + index += 2; + + // !== and === + if (source.charCodeAt(index) === 0x3D) { + ++index; + } + return { + type: Token.Punctuator, + value: source.slice(start, index), + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + } + } + + // 4-character punctuator: >>>= + + ch4 = source.substr(index, 4); + + if (ch4 === '>>>=') { + index += 4; + return { + type: Token.Punctuator, + value: ch4, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + // 3-character punctuators: === !== >>> <<= >>= + + ch3 = ch4.substr(0, 3); + + if (ch3 === '>>>' || ch3 === '<<=' || ch3 === '>>=') { + index += 3; + return { + type: Token.Punctuator, + value: ch3, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + // Other 2-character punctuators: ++ -- << >> && || + ch2 = ch3.substr(0, 2); + + if ((ch1 === ch2[1] && ('+-<>&|'.indexOf(ch1) >= 0)) || ch2 === '=>') { + index += 2; + return { + type: Token.Punctuator, + value: ch2, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + // 1-character punctuators: < > = ! + - * % & | ^ / + + if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) { + ++index; + return { + type: Token.Punctuator, + value: ch1, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + throwUnexpectedToken(); + } + + // 7.8.3 Numeric Literals + + function scanHexLiteral(start) { + var number = ''; + + while (index < length) { + if (!isHexDigit(source[index])) { + break; + } + number += source[index++]; + } + + if (number.length === 0) { + throwUnexpectedToken(); + } + + if (isIdentifierStart(source.charCodeAt(index))) { + throwUnexpectedToken(); + } + + return { + type: Token.NumericLiteral, + value: parseInt('0x' + number, 16), + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + function scanBinaryLiteral(start) { + var ch, number; + + number = ''; + + while (index < length) { + ch = source[index]; + if (ch !== '0' && ch !== '1') { + break; + } + number += source[index++]; + } + + if (number.length === 0) { + // only 0b or 0B + throwUnexpectedToken(); + } + + if (index < length) { + ch = source.charCodeAt(index); + /* istanbul ignore else */ + if (isIdentifierStart(ch) || isDecimalDigit(ch)) { + throwUnexpectedToken(); + } + } + + return { + type: Token.NumericLiteral, + value: parseInt(number, 2), + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + function scanOctalLiteral(prefix, start) { + var number, octal; + + if (isOctalDigit(prefix)) { + octal = true; + number = '0' + source[index++]; + } else { + octal = false; + ++index; + number = ''; + } + + while (index < length) { + if (!isOctalDigit(source[index])) { + break; + } + number += source[index++]; + } + + if (!octal && number.length === 0) { + // only 0o or 0O + throwUnexpectedToken(); + } + + if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) { + throwUnexpectedToken(); + } + + return { + type: Token.NumericLiteral, + value: parseInt(number, 8), + octal: octal, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + function isImplicitOctalLiteral() { + var i, ch; + + // Implicit octal, unless there is a non-octal digit. + // (Annex B.1.1 on Numeric Literals) + for (i = index + 1; i < length; ++i) { + ch = source[i]; + if (ch === '8' || ch === '9') { + return false; + } + if (!isOctalDigit(ch)) { + return true; + } + } + + return true; + } + + function scanNumericLiteral() { + var number, start, ch; + + ch = source[index]; + assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'), + 'Numeric literal must start with a decimal digit or a decimal point'); + + start = index; + number = ''; + if (ch !== '.') { + number = source[index++]; + ch = source[index]; + + // Hex number starts with '0x'. + // Octal number starts with '0'. + // Octal number in ES6 starts with '0o'. + // Binary number in ES6 starts with '0b'. + if (number === '0') { + if (ch === 'x' || ch === 'X') { + ++index; + return scanHexLiteral(start); + } + if (ch === 'b' || ch === 'B') { + ++index; + return scanBinaryLiteral(start); + } + if (ch === 'o' || ch === 'O') { + return scanOctalLiteral(ch, start); + } + + if (isOctalDigit(ch)) { + if (isImplicitOctalLiteral()) { + return scanOctalLiteral(ch, start); + } + } + } + + while (isDecimalDigit(source.charCodeAt(index))) { + number += source[index++]; + } + ch = source[index]; + } + + if (ch === '.') { + number += source[index++]; + while (isDecimalDigit(source.charCodeAt(index))) { + number += source[index++]; + } + ch = source[index]; + } + + if (ch === 'e' || ch === 'E') { + number += source[index++]; + + ch = source[index]; + if (ch === '+' || ch === '-') { + number += source[index++]; + } + if (isDecimalDigit(source.charCodeAt(index))) { + while (isDecimalDigit(source.charCodeAt(index))) { + number += source[index++]; + } + } else { + throwUnexpectedToken(); + } + } + + if (isIdentifierStart(source.charCodeAt(index))) { + throwUnexpectedToken(); + } + + return { + type: Token.NumericLiteral, + value: parseFloat(number), + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + // 7.8.4 String Literals + + function scanStringLiteral() { + var str = '', quote, start, ch, code, unescaped, restore, octal = false, startLineNumber, startLineStart; + startLineNumber = lineNumber; + startLineStart = lineStart; + + quote = source[index]; + assert((quote === '\'' || quote === '"'), + 'String literal must starts with a quote'); + + start = index; + ++index; + + while (index < length) { + ch = source[index++]; + + if (ch === quote) { + quote = ''; + break; + } else if (ch === '\\') { + ch = source[index++]; + if (!ch || !isLineTerminator(ch.charCodeAt(0))) { + switch (ch) { + case 'u': + case 'x': + if (source[index] === '{') { + ++index; + str += scanUnicodeCodePointEscape(); + } else { + restore = index; + unescaped = scanHexEscape(ch); + if (unescaped) { + str += unescaped; + } else { + index = restore; + str += ch; + } + } + break; + case 'n': + str += '\n'; + break; + case 'r': + str += '\r'; + break; + case 't': + str += '\t'; + break; + case 'b': + str += '\b'; + break; + case 'f': + str += '\f'; + break; + case 'v': + str += '\x0B'; + break; + + default: + if (isOctalDigit(ch)) { + code = '01234567'.indexOf(ch); + + // \0 is not octal escape sequence + if (code !== 0) { + octal = true; + } + + if (index < length && isOctalDigit(source[index])) { + octal = true; + code = code * 8 + '01234567'.indexOf(source[index++]); + + // 3 digits are only allowed when string starts + // with 0, 1, 2, 3 + if ('0123'.indexOf(ch) >= 0 && + index < length && + isOctalDigit(source[index])) { + code = code * 8 + '01234567'.indexOf(source[index++]); + } + } + str += String.fromCharCode(code); + } else { + str += ch; + } + break; + } + } else { + ++lineNumber; + if (ch === '\r' && source[index] === '\n') { + ++index; + } + lineStart = index; + } + } else if (isLineTerminator(ch.charCodeAt(0))) { + break; + } else { + str += ch; + } + } + + if (quote !== '') { + throwUnexpectedToken(); + } + + return { + type: Token.StringLiteral, + value: str, + octal: octal, + startLineNumber: startLineNumber, + startLineStart: startLineStart, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + function testRegExp(pattern, flags) { + var tmp = pattern, + value; + + if (flags.indexOf('u') >= 0) { + // Replace each astral symbol and every Unicode code point + // escape sequence with a single ASCII symbol to avoid throwing on + // regular expressions that are only valid in combination with the + // `/u` flag. + // Note: replacing with the ASCII symbol `x` might cause false + // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a + // perfectly valid pattern that is equivalent to `[a-b]`, but it + // would be replaced by `[x-b]` which throws an error. + tmp = tmp + .replace(/\\u\{([0-9a-fA-F]+)\}/g, function ($0, $1) { + if (parseInt($1, 16) <= 0x10FFFF) { + return 'x'; + } + throwError(Messages.InvalidRegExp); + }) + .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, 'x'); + } + + // First, detect invalid regular expressions. + try { + value = new RegExp(tmp); + } catch (e) { + throwError(Messages.InvalidRegExp); + } + + // Return a regular expression object for this pattern-flag pair, or + // `null` in case the current environment doesn't support the flags it + // uses. + try { + return new RegExp(pattern, flags); + } catch (exception) { + return null; + } + } + + function scanRegExpBody() { + var ch, str, classMarker, terminated, body; + + ch = source[index]; + assert(ch === '/', 'Regular expression literal must start with a slash'); + str = source[index++]; + + classMarker = false; + terminated = false; + while (index < length) { + ch = source[index++]; + str += ch; + if (ch === '\\') { + ch = source[index++]; + // ECMA-262 7.8.5 + if (isLineTerminator(ch.charCodeAt(0))) { + throwError(Messages.UnterminatedRegExp); + } + str += ch; + } else if (isLineTerminator(ch.charCodeAt(0))) { + throwError(Messages.UnterminatedRegExp); + } else if (classMarker) { + if (ch === ']') { + classMarker = false; + } + } else { + if (ch === '/') { + terminated = true; + break; + } else if (ch === '[') { + classMarker = true; + } + } + } + + if (!terminated) { + throwError(Messages.UnterminatedRegExp); + } + + // Exclude leading and trailing slash. + body = str.substr(1, str.length - 2); + return { + value: body, + literal: str + }; + } + + function scanRegExpFlags() { + var ch, str, flags, restore; + + str = ''; + flags = ''; + while (index < length) { + ch = source[index]; + if (!isIdentifierPart(ch.charCodeAt(0))) { + break; + } + + ++index; + if (ch === '\\' && index < length) { + ch = source[index]; + if (ch === 'u') { + ++index; + restore = index; + ch = scanHexEscape('u'); + if (ch) { + flags += ch; + for (str += '\\u'; restore < index; ++restore) { + str += source[restore]; + } + } else { + index = restore; + flags += 'u'; + str += '\\u'; + } + tolerateUnexpectedToken(); + } else { + str += '\\'; + tolerateUnexpectedToken(); + } + } else { + flags += ch; + str += ch; + } + } + + return { + value: flags, + literal: str + }; + } + + function scanRegExp() { + var start, body, flags, value; + + lookahead = null; + skipComment(); + start = index; + + body = scanRegExpBody(); + flags = scanRegExpFlags(); + value = testRegExp(body.value, flags.value); + + if (extra.tokenize) { + return { + type: Token.RegularExpression, + value: value, + regex: { + pattern: body.value, + flags: flags.value + }, + lineNumber: lineNumber, + lineStart: lineStart, + start: start, + end: index + }; + } + + return { + literal: body.literal + flags.literal, + value: value, + regex: { + pattern: body.value, + flags: flags.value + }, + start: start, + end: index + }; + } + + function collectRegex() { + var pos, loc, regex, token; + + skipComment(); + + pos = index; + loc = { + start: { + line: lineNumber, + column: index - lineStart + } + }; + + regex = scanRegExp(); + + loc.end = { + line: lineNumber, + column: index - lineStart + }; + + /* istanbul ignore next */ + if (!extra.tokenize) { + // Pop the previous token, which is likely '/' or '/=' + if (extra.tokens.length > 0) { + token = extra.tokens[extra.tokens.length - 1]; + if (token.range[0] === pos && token.type === 'Punctuator') { + if (token.value === '/' || token.value === '/=') { + extra.tokens.pop(); + } + } + } + + extra.tokens.push({ + type: 'RegularExpression', + value: regex.literal, + regex: regex.regex, + range: [pos, index], + loc: loc + }); + } + + return regex; + } + + function isIdentifierName(token) { + return token.type === Token.Identifier || + token.type === Token.Keyword || + token.type === Token.BooleanLiteral || + token.type === Token.NullLiteral; + } + + function advanceSlash() { + var prevToken, + checkToken; + // Using the following algorithm: + // https://github.com/mozilla/sweet.js/wiki/design + prevToken = extra.tokens[extra.tokens.length - 1]; + if (!prevToken) { + // Nothing before that: it cannot be a division. + return collectRegex(); + } + if (prevToken.type === 'Punctuator') { + if (prevToken.value === ']') { + return scanPunctuator(); + } + if (prevToken.value === ')') { + checkToken = extra.tokens[extra.openParenToken - 1]; + if (checkToken && + checkToken.type === 'Keyword' && + (checkToken.value === 'if' || + checkToken.value === 'while' || + checkToken.value === 'for' || + checkToken.value === 'with')) { + return collectRegex(); + } + return scanPunctuator(); + } + if (prevToken.value === '}') { + // Dividing a function by anything makes little sense, + // but we have to check for that. + if (extra.tokens[extra.openCurlyToken - 3] && + extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') { + // Anonymous function. + checkToken = extra.tokens[extra.openCurlyToken - 4]; + if (!checkToken) { + return scanPunctuator(); + } + } else if (extra.tokens[extra.openCurlyToken - 4] && + extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') { + // Named function. + checkToken = extra.tokens[extra.openCurlyToken - 5]; + if (!checkToken) { + return collectRegex(); + } + } else { + return scanPunctuator(); + } + // checkToken determines whether the function is + // a declaration or an expression. + if (FnExprTokens.indexOf(checkToken.value) >= 0) { + // It is an expression. + return scanPunctuator(); + } + // It is a declaration. + return collectRegex(); + } + return collectRegex(); + } + if (prevToken.type === 'Keyword' && prevToken.value !== 'this') { + return collectRegex(); + } + return scanPunctuator(); + } + + function advance() { + var ch; + + skipComment(); + + if (index >= length) { + return { + type: Token.EOF, + lineNumber: lineNumber, + lineStart: lineStart, + start: index, + end: index + }; + } + + ch = source.charCodeAt(index); + + if (isIdentifierStart(ch)) { + return scanIdentifier(); + } + + // Very common: ( and ) and ; + if (ch === 0x28 || ch === 0x29 || ch === 0x3B) { + return scanPunctuator(); + } + + // String literal starts with single quote (U+0027) or double quote (U+0022). + if (ch === 0x27 || ch === 0x22) { + return scanStringLiteral(); + } + + + // Dot (.) U+002E can also start a floating-point number, hence the need + // to check the next character. + if (ch === 0x2E) { + if (isDecimalDigit(source.charCodeAt(index + 1))) { + return scanNumericLiteral(); + } + return scanPunctuator(); + } + + if (isDecimalDigit(ch)) { + return scanNumericLiteral(); + } + + // Slash (/) U+002F can also start a regex. + if (extra.tokenize && ch === 0x2F) { + return advanceSlash(); + } + + return scanPunctuator(); + } + + function collectToken() { + var loc, token, value, entry; + + skipComment(); + loc = { + start: { + line: lineNumber, + column: index - lineStart + } + }; + + token = advance(); + loc.end = { + line: lineNumber, + column: index - lineStart + }; + + if (token.type !== Token.EOF) { + value = source.slice(token.start, token.end); + entry = { + type: TokenName[token.type], + value: value, + range: [token.start, token.end], + loc: loc + }; + if (token.regex) { + entry.regex = { + pattern: token.regex.pattern, + flags: token.regex.flags + }; + } + extra.tokens.push(entry); + } + + return token; + } + + function lex() { + var token; + + token = lookahead; + index = token.end; + lineNumber = token.lineNumber; + lineStart = token.lineStart; + + lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance(); + + index = token.end; + lineNumber = token.lineNumber; + lineStart = token.lineStart; + + return token; + } + + function peek() { + var pos, line, start; + + pos = index; + line = lineNumber; + start = lineStart; + lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance(); + index = pos; + lineNumber = line; + lineStart = start; + } + + function Position() { + this.line = lineNumber; + this.column = index - lineStart; + } + + function SourceLocation() { + this.start = new Position(); + this.end = null; + } + + function WrappingSourceLocation(startToken) { + if (startToken.type === Token.StringLiteral) { + this.start = { + line: startToken.startLineNumber, + column: startToken.start - startToken.startLineStart + }; + } else { + this.start = { + line: startToken.lineNumber, + column: startToken.start - startToken.lineStart + }; + } + this.end = null; + } + + function Node() { + // Skip comment. + index = lookahead.start; + if (lookahead.type === Token.StringLiteral) { + lineNumber = lookahead.startLineNumber; + lineStart = lookahead.startLineStart; + } else { + lineNumber = lookahead.lineNumber; + lineStart = lookahead.lineStart; + } + if (extra.range) { + this.range = [index, 0]; + } + if (extra.loc) { + this.loc = new SourceLocation(); + } + } + + function WrappingNode(startToken) { + if (extra.range) { + this.range = [startToken.start, 0]; + } + if (extra.loc) { + this.loc = new WrappingSourceLocation(startToken); + } + } + + WrappingNode.prototype = Node.prototype = { + + processComment: function () { + var lastChild, + leadingComments, + trailingComments, + bottomRight = extra.bottomRightStack, + i, + comment, + last = bottomRight[bottomRight.length - 1]; + + if (this.type === Syntax.Program) { + if (this.body.length > 0) { + return; + } + } + + if (extra.trailingComments.length > 0) { + trailingComments = []; + for (i = extra.trailingComments.length - 1; i >= 0; --i) { + comment = extra.trailingComments[i]; + if (comment.range[0] >= this.range[1]) { + trailingComments.unshift(comment); + extra.trailingComments.splice(i, 1); + } + } + extra.trailingComments = []; + } else { + if (last && last.trailingComments && last.trailingComments[0].range[0] >= this.range[1]) { + trailingComments = last.trailingComments; + delete last.trailingComments; + } + } + + // Eating the stack. + if (last) { + while (last && last.range[0] >= this.range[0]) { + lastChild = last; + last = bottomRight.pop(); + } + } + + if (lastChild) { + if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= this.range[0]) { + this.leadingComments = lastChild.leadingComments; + lastChild.leadingComments = undefined; + } + } else if (extra.leadingComments.length > 0) { + leadingComments = []; + for (i = extra.leadingComments.length - 1; i >= 0; --i) { + comment = extra.leadingComments[i]; + if (comment.range[1] <= this.range[0]) { + leadingComments.unshift(comment); + extra.leadingComments.splice(i, 1); + } + } + } + + + if (leadingComments && leadingComments.length > 0) { + this.leadingComments = leadingComments; + } + if (trailingComments && trailingComments.length > 0) { + this.trailingComments = trailingComments; + } + + bottomRight.push(this); + }, + + finish: function () { + if (extra.range) { + this.range[1] = index; + } + if (extra.loc) { + this.loc.end = new Position(); + if (extra.source) { + this.loc.source = extra.source; + } + } + + if (extra.attachComment) { + this.processComment(); + } + }, + + finishArrayExpression: function (elements) { + this.type = Syntax.ArrayExpression; + this.elements = elements; + this.finish(); + return this; + }, + + finishArrowFunctionExpression: function (params, defaults, body, expression) { + this.type = Syntax.ArrowFunctionExpression; + this.id = null; + this.params = params; + this.defaults = defaults; + this.body = body; + this.rest = null; + this.generator = false; + this.expression = expression; + this.finish(); + return this; + }, + + finishAssignmentExpression: function (operator, left, right) { + this.type = Syntax.AssignmentExpression; + this.operator = operator; + this.left = left; + this.right = right; + this.finish(); + return this; + }, + + finishBinaryExpression: function (operator, left, right) { + this.type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression : Syntax.BinaryExpression; + this.operator = operator; + this.left = left; + this.right = right; + this.finish(); + return this; + }, + + finishBlockStatement: function (body) { + this.type = Syntax.BlockStatement; + this.body = body; + this.finish(); + return this; + }, + + finishBreakStatement: function (label) { + this.type = Syntax.BreakStatement; + this.label = label; + this.finish(); + return this; + }, + + finishCallExpression: function (callee, args) { + this.type = Syntax.CallExpression; + this.callee = callee; + this.arguments = args; + this.finish(); + return this; + }, + + finishCatchClause: function (param, body) { + this.type = Syntax.CatchClause; + this.param = param; + this.body = body; + this.finish(); + return this; + }, + + finishConditionalExpression: function (test, consequent, alternate) { + this.type = Syntax.ConditionalExpression; + this.test = test; + this.consequent = consequent; + this.alternate = alternate; + this.finish(); + return this; + }, + + finishContinueStatement: function (label) { + this.type = Syntax.ContinueStatement; + this.label = label; + this.finish(); + return this; + }, + + finishDebuggerStatement: function () { + this.type = Syntax.DebuggerStatement; + this.finish(); + return this; + }, + + finishDoWhileStatement: function (body, test) { + this.type = Syntax.DoWhileStatement; + this.body = body; + this.test = test; + this.finish(); + return this; + }, + + finishEmptyStatement: function () { + this.type = Syntax.EmptyStatement; + this.finish(); + return this; + }, + + finishExpressionStatement: function (expression) { + this.type = Syntax.ExpressionStatement; + this.expression = expression; + this.finish(); + return this; + }, + + finishForStatement: function (init, test, update, body) { + this.type = Syntax.ForStatement; + this.init = init; + this.test = test; + this.update = update; + this.body = body; + this.finish(); + return this; + }, + + finishForInStatement: function (left, right, body) { + this.type = Syntax.ForInStatement; + this.left = left; + this.right = right; + this.body = body; + this.each = false; + this.finish(); + return this; + }, + + finishFunctionDeclaration: function (id, params, defaults, body) { + this.type = Syntax.FunctionDeclaration; + this.id = id; + this.params = params; + this.defaults = defaults; + this.body = body; + this.rest = null; + this.generator = false; + this.expression = false; + this.finish(); + return this; + }, + + finishFunctionExpression: function (id, params, defaults, body) { + this.type = Syntax.FunctionExpression; + this.id = id; + this.params = params; + this.defaults = defaults; + this.body = body; + this.rest = null; + this.generator = false; + this.expression = false; + this.finish(); + return this; + }, + + finishIdentifier: function (name) { + this.type = Syntax.Identifier; + this.name = name; + this.finish(); + return this; + }, + + finishIfStatement: function (test, consequent, alternate) { + this.type = Syntax.IfStatement; + this.test = test; + this.consequent = consequent; + this.alternate = alternate; + this.finish(); + return this; + }, + + finishLabeledStatement: function (label, body) { + this.type = Syntax.LabeledStatement; + this.label = label; + this.body = body; + this.finish(); + return this; + }, + + finishLiteral: function (token) { + this.type = Syntax.Literal; + this.value = token.value; + this.raw = source.slice(token.start, token.end); + if (token.regex) { + this.regex = token.regex; + } + this.finish(); + return this; + }, + + finishMemberExpression: function (accessor, object, property) { + this.type = Syntax.MemberExpression; + this.computed = accessor === '['; + this.object = object; + this.property = property; + this.finish(); + return this; + }, + + finishNewExpression: function (callee, args) { + this.type = Syntax.NewExpression; + this.callee = callee; + this.arguments = args; + this.finish(); + return this; + }, + + finishObjectExpression: function (properties) { + this.type = Syntax.ObjectExpression; + this.properties = properties; + this.finish(); + return this; + }, + + finishPostfixExpression: function (operator, argument) { + this.type = Syntax.UpdateExpression; + this.operator = operator; + this.argument = argument; + this.prefix = false; + this.finish(); + return this; + }, + + finishProgram: function (body) { + this.type = Syntax.Program; + this.body = body; + this.finish(); + return this; + }, + + finishProperty: function (kind, key, value, method, shorthand) { + this.type = Syntax.Property; + this.key = key; + this.value = value; + this.kind = kind; + this.method = method; + this.shorthand = shorthand; + this.finish(); + return this; + }, + + finishReturnStatement: function (argument) { + this.type = Syntax.ReturnStatement; + this.argument = argument; + this.finish(); + return this; + }, + + finishSequenceExpression: function (expressions) { + this.type = Syntax.SequenceExpression; + this.expressions = expressions; + this.finish(); + return this; + }, + + finishSwitchCase: function (test, consequent) { + this.type = Syntax.SwitchCase; + this.test = test; + this.consequent = consequent; + this.finish(); + return this; + }, + + finishSwitchStatement: function (discriminant, cases) { + this.type = Syntax.SwitchStatement; + this.discriminant = discriminant; + this.cases = cases; + this.finish(); + return this; + }, + + finishThisExpression: function () { + this.type = Syntax.ThisExpression; + this.finish(); + return this; + }, + + finishThrowStatement: function (argument) { + this.type = Syntax.ThrowStatement; + this.argument = argument; + this.finish(); + return this; + }, + + finishTryStatement: function (block, guardedHandlers, handlers, finalizer) { + this.type = Syntax.TryStatement; + this.block = block; + this.guardedHandlers = guardedHandlers; + this.handlers = handlers; + this.finalizer = finalizer; + this.finish(); + return this; + }, + + finishUnaryExpression: function (operator, argument) { + this.type = (operator === '++' || operator === '--') ? Syntax.UpdateExpression : Syntax.UnaryExpression; + this.operator = operator; + this.argument = argument; + this.prefix = true; + this.finish(); + return this; + }, + + finishVariableDeclaration: function (declarations, kind) { + this.type = Syntax.VariableDeclaration; + this.declarations = declarations; + this.kind = kind; + this.finish(); + return this; + }, + + finishVariableDeclarator: function (id, init) { + this.type = Syntax.VariableDeclarator; + this.id = id; + this.init = init; + this.finish(); + return this; + }, + + finishWhileStatement: function (test, body) { + this.type = Syntax.WhileStatement; + this.test = test; + this.body = body; + this.finish(); + return this; + }, + + finishWithStatement: function (object, body) { + this.type = Syntax.WithStatement; + this.object = object; + this.body = body; + this.finish(); + return this; + } + }; + + // Return true if there is a line terminator before the next token. + + function peekLineTerminator() { + var pos, line, start, found; + + pos = index; + line = lineNumber; + start = lineStart; + skipComment(); + found = lineNumber !== line; + index = pos; + lineNumber = line; + lineStart = start; + + return found; + } + + function createError(line, pos, description) { + var error = new Error('Line ' + line + ': ' + description); + error.index = pos; + error.lineNumber = line; + error.column = pos - lineStart + 1; + error.description = description; + return error; + } + + // Throw an exception + + function throwError(messageFormat) { + var args, msg; + + args = Array.prototype.slice.call(arguments, 1); + msg = messageFormat.replace(/%(\d)/g, + function (whole, idx) { + assert(idx < args.length, 'Message reference must be in range'); + return args[idx]; + } + ); + + throw createError(lineNumber, index, msg); + } + + function tolerateError(messageFormat) { + var args, msg, error; + + args = Array.prototype.slice.call(arguments, 1); + /* istanbul ignore next */ + msg = messageFormat.replace(/%(\d)/g, + function (whole, idx) { + assert(idx < args.length, 'Message reference must be in range'); + return args[idx]; + } + ); + + error = createError(lineNumber, index, msg); + if (extra.errors) { + extra.errors.push(error); + } else { + throw error; + } + } + + // Throw an exception because of the token. + + function unexpectedTokenError(token, message) { + var msg = Messages.UnexpectedToken; + + if (token) { + msg = message ? message : + (token.type === Token.EOF) ? Messages.UnexpectedEOS : + (token.type === Token.Identifier) ? Messages.UnexpectedIdentifier : + (token.type === Token.NumericLiteral) ? Messages.UnexpectedNumber : + (token.type === Token.StringLiteral) ? Messages.UnexpectedString : + Messages.UnexpectedToken; + + if (token.type === Token.Keyword) { + if (isFutureReservedWord(token.value)) { + msg = Messages.UnexpectedReserved; + } else if (strict && isStrictModeReservedWord(token.value)) { + msg = Messages.StrictReservedWord; + } + } + } + + msg = msg.replace('%0', token ? token.value : 'ILLEGAL'); + + return (token && typeof token.lineNumber === 'number') ? + createError(token.lineNumber, token.start, msg) : + createError(lineNumber, index, msg); + } + + function throwUnexpectedToken(token, message) { + throw unexpectedTokenError(token, message); + } + + function tolerateUnexpectedToken(token, message) { + var error = unexpectedTokenError(token, message); + if (extra.errors) { + extra.errors.push(error); + } else { + throw error; + } + } + + // Expect the next token to match the specified punctuator. + // If not, an exception will be thrown. + + function expect(value) { + var token = lex(); + if (token.type !== Token.Punctuator || token.value !== value) { + throwUnexpectedToken(token); + } + } + + /** + * @name expectCommaSeparator + * @description Quietly expect a comma when in tolerant mode, otherwise delegates + * to expect(value) + * @since 2.0 + */ + function expectCommaSeparator() { + var token; + + if (extra.errors) { + token = lookahead; + if (token.type === Token.Punctuator && token.value === ',') { + lex(); + } else if (token.type === Token.Punctuator && token.value === ';') { + lex(); + tolerateUnexpectedToken(token); + } else { + tolerateUnexpectedToken(token, Messages.UnexpectedToken); + } + } else { + expect(','); + } + } + + // Expect the next token to match the specified keyword. + // If not, an exception will be thrown. + + function expectKeyword(keyword) { + var token = lex(); + if (token.type !== Token.Keyword || token.value !== keyword) { + throwUnexpectedToken(token); + } + } + + // Return true if the next token matches the specified punctuator. + + function match(value) { + return lookahead.type === Token.Punctuator && lookahead.value === value; + } + + // Return true if the next token matches the specified keyword + + function matchKeyword(keyword) { + return lookahead.type === Token.Keyword && lookahead.value === keyword; + } + + // Return true if the next token is an assignment operator + + function matchAssign() { + var op; + + if (lookahead.type !== Token.Punctuator) { + return false; + } + op = lookahead.value; + return op === '=' || + op === '*=' || + op === '/=' || + op === '%=' || + op === '+=' || + op === '-=' || + op === '<<=' || + op === '>>=' || + op === '>>>=' || + op === '&=' || + op === '^=' || + op === '|='; + } + + function consumeSemicolon() { + var line, oldIndex = index, oldLineNumber = lineNumber, + oldLineStart = lineStart, oldLookahead = lookahead; + + // Catch the very common case first: immediately a semicolon (U+003B). + if (source.charCodeAt(index) === 0x3B || match(';')) { + lex(); + return; + } + + line = lineNumber; + skipComment(); + if (lineNumber !== line) { + index = oldIndex; + lineNumber = oldLineNumber; + lineStart = oldLineStart; + lookahead = oldLookahead; + return; + } + + if (lookahead.type !== Token.EOF && !match('}')) { + throwUnexpectedToken(lookahead); + } + } + + // Return true if provided expression is LeftHandSideExpression + + function isLeftHandSide(expr) { + return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression; + } + + // 11.1.4 Array Initialiser + + function parseArrayInitialiser() { + var elements = [], node = new Node(); + + expect('['); + + while (!match(']')) { + if (match(',')) { + lex(); + elements.push(null); + } else { + elements.push(parseAssignmentExpression()); + + if (!match(']')) { + expect(','); + } + } + } + + lex(); + + return node.finishArrayExpression(elements); + } + + // 11.1.5 Object Initialiser + + function parsePropertyFunction(param, first) { + var previousStrict, body, node = new Node(); + + previousStrict = strict; + body = parseFunctionSourceElements(); + if (first && strict && isRestrictedWord(param[0].name)) { + tolerateUnexpectedToken(first, Messages.StrictParamName); + } + strict = previousStrict; + return node.finishFunctionExpression(null, param, [], body); + } + + function parsePropertyMethodFunction() { + var previousStrict, param, method; + + previousStrict = strict; + strict = true; + param = parseParams(); + method = parsePropertyFunction(param.params); + strict = previousStrict; + + return method; + } + + function parseObjectPropertyKey() { + var token, node = new Node(); + + token = lex(); + + // Note: This function is called only from parseObjectProperty(), where + // EOF and Punctuator tokens are already filtered out. + + if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) { + if (strict && token.octal) { + tolerateUnexpectedToken(token, Messages.StrictOctalLiteral); + } + return node.finishLiteral(token); + } + + return node.finishIdentifier(token.value); + } + + function parseObjectProperty() { + var token, key, id, value, param, node = new Node(); + + token = lookahead; + + if (token.type === Token.Identifier) { + + id = parseObjectPropertyKey(); + + // Property Assignment: Getter and Setter. + + if (token.value === 'get' && !(match(':') || match('('))) { + key = parseObjectPropertyKey(); + expect('('); + expect(')'); + value = parsePropertyFunction([]); + return node.finishProperty('get', key, value, false, false); + } + if (token.value === 'set' && !(match(':') || match('('))) { + key = parseObjectPropertyKey(); + expect('('); + token = lookahead; + if (token.type !== Token.Identifier) { + expect(')'); + tolerateUnexpectedToken(token); + value = parsePropertyFunction([]); + } else { + param = [ parseVariableIdentifier() ]; + expect(')'); + value = parsePropertyFunction(param, token); + } + return node.finishProperty('set', key, value, false, false); + } + if (match(':')) { + lex(); + value = parseAssignmentExpression(); + return node.finishProperty('init', id, value, false, false); + } + if (match('(')) { + value = parsePropertyMethodFunction(); + return node.finishProperty('init', id, value, true, false); + } + + value = id; + return node.finishProperty('init', id, value, false, true); + } + if (token.type === Token.EOF || token.type === Token.Punctuator) { + throwUnexpectedToken(token); + } else { + key = parseObjectPropertyKey(); + if (match(':')) { + lex(); + value = parseAssignmentExpression(); + return node.finishProperty('init', key, value, false, false); + } + if (match('(')) { + value = parsePropertyMethodFunction(); + return node.finishProperty('init', key, value, true, false); + } + throwUnexpectedToken(lex()); + } + } + + function parseObjectInitialiser() { + var properties = [], property, name, key, kind, map = {}, toString = String, node = new Node(); + + expect('{'); + + while (!match('}')) { + property = parseObjectProperty(); + + if (property.key.type === Syntax.Identifier) { + name = property.key.name; + } else { + name = toString(property.key.value); + } + kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set; + + key = '$' + name; + if (Object.prototype.hasOwnProperty.call(map, key)) { + if (map[key] === PropertyKind.Data) { + if (strict && kind === PropertyKind.Data) { + tolerateError(Messages.StrictDuplicateProperty); + } else if (kind !== PropertyKind.Data) { + tolerateError(Messages.AccessorDataProperty); + } + } else { + if (kind === PropertyKind.Data) { + tolerateError(Messages.AccessorDataProperty); + } else if (map[key] & kind) { + tolerateError(Messages.AccessorGetSet); + } + } + map[key] |= kind; + } else { + map[key] = kind; + } + + properties.push(property); + + if (!match('}')) { + expectCommaSeparator(); + } + } + + expect('}'); + + return node.finishObjectExpression(properties); + } + + // 11.1.6 The Grouping Operator + + function parseGroupExpression() { + var expr; + + expect('('); + + if (match(')')) { + lex(); + return PlaceHolders.ArrowParameterPlaceHolder; + } + + ++state.parenthesisCount; + + expr = parseExpression(); + + expect(')'); + + return expr; + } + + + // 11.1 Primary Expressions + + function parsePrimaryExpression() { + var type, token, expr, node; + + if (match('(')) { + return parseGroupExpression(); + } + + if (match('[')) { + return parseArrayInitialiser(); + } + + if (match('{')) { + return parseObjectInitialiser(); + } + + type = lookahead.type; + node = new Node(); + + if (type === Token.Identifier) { + expr = node.finishIdentifier(lex().value); + } else if (type === Token.StringLiteral || type === Token.NumericLiteral) { + if (strict && lookahead.octal) { + tolerateUnexpectedToken(lookahead, Messages.StrictOctalLiteral); + } + expr = node.finishLiteral(lex()); + } else if (type === Token.Keyword) { + if (matchKeyword('function')) { + return parseFunctionExpression(); + } + if (matchKeyword('this')) { + lex(); + expr = node.finishThisExpression(); + } else { + throwUnexpectedToken(lex()); + } + } else if (type === Token.BooleanLiteral) { + token = lex(); + token.value = (token.value === 'true'); + expr = node.finishLiteral(token); + } else if (type === Token.NullLiteral) { + token = lex(); + token.value = null; + expr = node.finishLiteral(token); + } else if (match('/') || match('/=')) { + if (typeof extra.tokens !== 'undefined') { + expr = node.finishLiteral(collectRegex()); + } else { + expr = node.finishLiteral(scanRegExp()); + } + peek(); + } else { + throwUnexpectedToken(lex()); + } + + return expr; + } + + // 11.2 Left-Hand-Side Expressions + + function parseArguments() { + var args = []; + + expect('('); + + if (!match(')')) { + while (index < length) { + args.push(parseAssignmentExpression()); + if (match(')')) { + break; + } + expectCommaSeparator(); + } + } + + expect(')'); + + return args; + } + + function parseNonComputedProperty() { + var token, node = new Node(); + + token = lex(); + + if (!isIdentifierName(token)) { + throwUnexpectedToken(token); + } + + return node.finishIdentifier(token.value); + } + + function parseNonComputedMember() { + expect('.'); + + return parseNonComputedProperty(); + } + + function parseComputedMember() { + var expr; + + expect('['); + + expr = parseExpression(); + + expect(']'); + + return expr; + } + + function parseNewExpression() { + var callee, args, node = new Node(); + + expectKeyword('new'); + callee = parseLeftHandSideExpression(); + args = match('(') ? parseArguments() : []; + + return node.finishNewExpression(callee, args); + } + + function parseLeftHandSideExpressionAllowCall() { + var expr, args, property, startToken, previousAllowIn = state.allowIn; + + startToken = lookahead; + state.allowIn = true; + expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression(); + + for (;;) { + if (match('.')) { + property = parseNonComputedMember(); + expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property); + } else if (match('(')) { + args = parseArguments(); + expr = new WrappingNode(startToken).finishCallExpression(expr, args); + } else if (match('[')) { + property = parseComputedMember(); + expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property); + } else { + break; + } + } + state.allowIn = previousAllowIn; + + return expr; + } + + function parseLeftHandSideExpression() { + var expr, property, startToken; + assert(state.allowIn, 'callee of new expression always allow in keyword.'); + + startToken = lookahead; + + expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression(); + + for (;;) { + if (match('[')) { + property = parseComputedMember(); + expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property); + } else if (match('.')) { + property = parseNonComputedMember(); + expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property); + } else { + break; + } + } + return expr; + } + + // 11.3 Postfix Expressions + + function parsePostfixExpression() { + var expr, token, startToken = lookahead; + + expr = parseLeftHandSideExpressionAllowCall(); + + if (lookahead.type === Token.Punctuator) { + if ((match('++') || match('--')) && !peekLineTerminator()) { + // 11.3.1, 11.3.2 + if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) { + tolerateError(Messages.StrictLHSPostfix); + } + + if (!isLeftHandSide(expr)) { + tolerateError(Messages.InvalidLHSInAssignment); + } + + token = lex(); + expr = new WrappingNode(startToken).finishPostfixExpression(token.value, expr); + } + } + + return expr; + } + + // 11.4 Unary Operators + + function parseUnaryExpression() { + var token, expr, startToken; + + if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) { + expr = parsePostfixExpression(); + } else if (match('++') || match('--')) { + startToken = lookahead; + token = lex(); + expr = parseUnaryExpression(); + // 11.4.4, 11.4.5 + if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) { + tolerateError(Messages.StrictLHSPrefix); + } + + if (!isLeftHandSide(expr)) { + tolerateError(Messages.InvalidLHSInAssignment); + } + + expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); + } else if (match('+') || match('-') || match('~') || match('!')) { + startToken = lookahead; + token = lex(); + expr = parseUnaryExpression(); + expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); + } else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) { + startToken = lookahead; + token = lex(); + expr = parseUnaryExpression(); + expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); + if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) { + tolerateError(Messages.StrictDelete); + } + } else { + expr = parsePostfixExpression(); + } + + return expr; + } + + function binaryPrecedence(token, allowIn) { + var prec = 0; + + if (token.type !== Token.Punctuator && token.type !== Token.Keyword) { + return 0; + } + + switch (token.value) { + case '||': + prec = 1; + break; + + case '&&': + prec = 2; + break; + + case '|': + prec = 3; + break; + + case '^': + prec = 4; + break; + + case '&': + prec = 5; + break; + + case '==': + case '!=': + case '===': + case '!==': + prec = 6; + break; + + case '<': + case '>': + case '<=': + case '>=': + case 'instanceof': + prec = 7; + break; + + case 'in': + prec = allowIn ? 7 : 0; + break; + + case '<<': + case '>>': + case '>>>': + prec = 8; + break; + + case '+': + case '-': + prec = 9; + break; + + case '*': + case '/': + case '%': + prec = 11; + break; + + default: + break; + } + + return prec; + } + + // 11.5 Multiplicative Operators + // 11.6 Additive Operators + // 11.7 Bitwise Shift Operators + // 11.8 Relational Operators + // 11.9 Equality Operators + // 11.10 Binary Bitwise Operators + // 11.11 Binary Logical Operators + + function parseBinaryExpression() { + var marker, markers, expr, token, prec, stack, right, operator, left, i; + + marker = lookahead; + left = parseUnaryExpression(); + if (left === PlaceHolders.ArrowParameterPlaceHolder) { + return left; + } + + token = lookahead; + prec = binaryPrecedence(token, state.allowIn); + if (prec === 0) { + return left; + } + token.prec = prec; + lex(); + + markers = [marker, lookahead]; + right = parseUnaryExpression(); + + stack = [left, token, right]; + + while ((prec = binaryPrecedence(lookahead, state.allowIn)) > 0) { + + // Reduce: make a binary expression from the three topmost entries. + while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) { + right = stack.pop(); + operator = stack.pop().value; + left = stack.pop(); + markers.pop(); + expr = new WrappingNode(markers[markers.length - 1]).finishBinaryExpression(operator, left, right); + stack.push(expr); + } + + // Shift. + token = lex(); + token.prec = prec; + stack.push(token); + markers.push(lookahead); + expr = parseUnaryExpression(); + stack.push(expr); + } + + // Final reduce to clean-up the stack. + i = stack.length - 1; + expr = stack[i]; + markers.pop(); + while (i > 1) { + expr = new WrappingNode(markers.pop()).finishBinaryExpression(stack[i - 1].value, stack[i - 2], expr); + i -= 2; + } + + return expr; + } + + + // 11.12 Conditional Operator + + function parseConditionalExpression() { + var expr, previousAllowIn, consequent, alternate, startToken; + + startToken = lookahead; + + expr = parseBinaryExpression(); + if (expr === PlaceHolders.ArrowParameterPlaceHolder) { + return expr; + } + if (match('?')) { + lex(); + previousAllowIn = state.allowIn; + state.allowIn = true; + consequent = parseAssignmentExpression(); + state.allowIn = previousAllowIn; + expect(':'); + alternate = parseAssignmentExpression(); + + expr = new WrappingNode(startToken).finishConditionalExpression(expr, consequent, alternate); + } + + return expr; + } + + // [ES6] 14.2 Arrow Function + + function parseConciseBody() { + if (match('{')) { + return parseFunctionSourceElements(); + } + return parseAssignmentExpression(); + } + + function reinterpretAsCoverFormalsList(expressions) { + var i, len, param, params, defaults, defaultCount, options, rest, token; + + params = []; + defaults = []; + defaultCount = 0; + rest = null; + options = { + paramSet: {} + }; + + for (i = 0, len = expressions.length; i < len; i += 1) { + param = expressions[i]; + if (param.type === Syntax.Identifier) { + params.push(param); + defaults.push(null); + validateParam(options, param, param.name); + } else if (param.type === Syntax.AssignmentExpression) { + params.push(param.left); + defaults.push(param.right); + ++defaultCount; + validateParam(options, param.left, param.left.name); + } else { + return null; + } + } + + if (options.message === Messages.StrictParamDupe) { + token = strict ? options.stricted : options.firstRestricted; + throwUnexpectedToken(token, options.message); + } + + if (defaultCount === 0) { + defaults = []; + } + + return { + params: params, + defaults: defaults, + rest: rest, + stricted: options.stricted, + firstRestricted: options.firstRestricted, + message: options.message + }; + } + + function parseArrowFunctionExpression(options, node) { + var previousStrict, body; + + expect('=>'); + previousStrict = strict; + + body = parseConciseBody(); + + if (strict && options.firstRestricted) { + throwUnexpectedToken(options.firstRestricted, options.message); + } + if (strict && options.stricted) { + tolerateUnexpectedToken(options.stricted, options.message); + } + + strict = previousStrict; + + return node.finishArrowFunctionExpression(options.params, options.defaults, body, body.type !== Syntax.BlockStatement); + } + + // 11.13 Assignment Operators + + function parseAssignmentExpression() { + var oldParenthesisCount, token, expr, right, list, startToken; + + oldParenthesisCount = state.parenthesisCount; + + startToken = lookahead; + token = lookahead; + + expr = parseConditionalExpression(); + + if (expr === PlaceHolders.ArrowParameterPlaceHolder || match('=>')) { + if (state.parenthesisCount === oldParenthesisCount || + state.parenthesisCount === (oldParenthesisCount + 1)) { + if (expr.type === Syntax.Identifier) { + list = reinterpretAsCoverFormalsList([ expr ]); + } else if (expr.type === Syntax.AssignmentExpression) { + list = reinterpretAsCoverFormalsList([ expr ]); + } else if (expr.type === Syntax.SequenceExpression) { + list = reinterpretAsCoverFormalsList(expr.expressions); + } else if (expr === PlaceHolders.ArrowParameterPlaceHolder) { + list = reinterpretAsCoverFormalsList([]); + } + if (list) { + return parseArrowFunctionExpression(list, new WrappingNode(startToken)); + } + } + } + + if (matchAssign()) { + // LeftHandSideExpression + if (!isLeftHandSide(expr)) { + tolerateError(Messages.InvalidLHSInAssignment); + } + + // 11.13.1 + if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) { + tolerateUnexpectedToken(token, Messages.StrictLHSAssignment); + } + + token = lex(); + right = parseAssignmentExpression(); + expr = new WrappingNode(startToken).finishAssignmentExpression(token.value, expr, right); + } + + return expr; + } + + // 11.14 Comma Operator + + function parseExpression() { + var expr, startToken = lookahead, expressions; + + expr = parseAssignmentExpression(); + + if (match(',')) { + expressions = [expr]; + + while (index < length) { + if (!match(',')) { + break; + } + lex(); + expressions.push(parseAssignmentExpression()); + } + + expr = new WrappingNode(startToken).finishSequenceExpression(expressions); + } + + return expr; + } + + // 12.1 Block + + function parseStatementList() { + var list = [], + statement; + + while (index < length) { + if (match('}')) { + break; + } + statement = parseSourceElement(); + if (typeof statement === 'undefined') { + break; + } + list.push(statement); + } + + return list; + } + + function parseBlock() { + var block, node = new Node(); + + expect('{'); + + block = parseStatementList(); + + expect('}'); + + return node.finishBlockStatement(block); + } + + // 12.2 Variable Statement + + function parseVariableIdentifier() { + var token, node = new Node(); + + token = lex(); + + if (token.type !== Token.Identifier) { + if (strict && token.type === Token.Keyword && isStrictModeReservedWord(token.value)) { + tolerateUnexpectedToken(token, Messages.StrictReservedWord); + } else { + throwUnexpectedToken(token); + } + } + + return node.finishIdentifier(token.value); + } + + function parseVariableDeclaration(kind) { + var init = null, id, node = new Node(); + + id = parseVariableIdentifier(); + + // 12.2.1 + if (strict && isRestrictedWord(id.name)) { + tolerateError(Messages.StrictVarName); + } + + if (kind === 'const') { + expect('='); + init = parseAssignmentExpression(); + } else if (match('=')) { + lex(); + init = parseAssignmentExpression(); + } + + return node.finishVariableDeclarator(id, init); + } + + function parseVariableDeclarationList(kind) { + var list = []; + + do { + list.push(parseVariableDeclaration(kind)); + if (!match(',')) { + break; + } + lex(); + } while (index < length); + + return list; + } + + function parseVariableStatement(node) { + var declarations; + + expectKeyword('var'); + + declarations = parseVariableDeclarationList(); + + consumeSemicolon(); + + return node.finishVariableDeclaration(declarations, 'var'); + } + + // kind may be `const` or `let` + // Both are experimental and not in the specification yet. + // see http://wiki.ecmascript.org/doku.php?id=harmony:const + // and http://wiki.ecmascript.org/doku.php?id=harmony:let + function parseConstLetDeclaration(kind) { + var declarations, node = new Node(); + + expectKeyword(kind); + + declarations = parseVariableDeclarationList(kind); + + consumeSemicolon(); + + return node.finishVariableDeclaration(declarations, kind); + } + + // 12.3 Empty Statement + + function parseEmptyStatement() { + var node = new Node(); + expect(';'); + return node.finishEmptyStatement(); + } + + // 12.4 Expression Statement + + function parseExpressionStatement(node) { + var expr = parseExpression(); + consumeSemicolon(); + return node.finishExpressionStatement(expr); + } + + // 12.5 If statement + + function parseIfStatement(node) { + var test, consequent, alternate; + + expectKeyword('if'); + + expect('('); + + test = parseExpression(); + + expect(')'); + + consequent = parseStatement(); + + if (matchKeyword('else')) { + lex(); + alternate = parseStatement(); + } else { + alternate = null; + } + + return node.finishIfStatement(test, consequent, alternate); + } + + // 12.6 Iteration Statements + + function parseDoWhileStatement(node) { + var body, test, oldInIteration; + + expectKeyword('do'); + + oldInIteration = state.inIteration; + state.inIteration = true; + + body = parseStatement(); + + state.inIteration = oldInIteration; + + expectKeyword('while'); + + expect('('); + + test = parseExpression(); + + expect(')'); + + if (match(';')) { + lex(); + } + + return node.finishDoWhileStatement(body, test); + } + + function parseWhileStatement(node) { + var test, body, oldInIteration; + + expectKeyword('while'); + + expect('('); + + test = parseExpression(); + + expect(')'); + + oldInIteration = state.inIteration; + state.inIteration = true; + + body = parseStatement(); + + state.inIteration = oldInIteration; + + return node.finishWhileStatement(test, body); + } + + function parseForVariableDeclaration() { + var token, declarations, node = new Node(); + + token = lex(); + declarations = parseVariableDeclarationList(); + + return node.finishVariableDeclaration(declarations, token.value); + } + + function parseForStatement(node) { + var init, test, update, left, right, body, oldInIteration, previousAllowIn = state.allowIn; + + init = test = update = null; + + expectKeyword('for'); + + expect('('); + + if (match(';')) { + lex(); + } else { + if (matchKeyword('var') || matchKeyword('let')) { + state.allowIn = false; + init = parseForVariableDeclaration(); + state.allowIn = previousAllowIn; + + if (init.declarations.length === 1 && matchKeyword('in')) { + lex(); + left = init; + right = parseExpression(); + init = null; + } + } else { + state.allowIn = false; + init = parseExpression(); + state.allowIn = previousAllowIn; + + if (matchKeyword('in')) { + // LeftHandSideExpression + if (!isLeftHandSide(init)) { + tolerateError(Messages.InvalidLHSInForIn); + } + + lex(); + left = init; + right = parseExpression(); + init = null; + } + } + + if (typeof left === 'undefined') { + expect(';'); + } + } + + if (typeof left === 'undefined') { + + if (!match(';')) { + test = parseExpression(); + } + expect(';'); + + if (!match(')')) { + update = parseExpression(); + } + } + + expect(')'); + + oldInIteration = state.inIteration; + state.inIteration = true; + + body = parseStatement(); + + state.inIteration = oldInIteration; + + return (typeof left === 'undefined') ? + node.finishForStatement(init, test, update, body) : + node.finishForInStatement(left, right, body); + } + + // 12.7 The continue statement + + function parseContinueStatement(node) { + var label = null, key; + + expectKeyword('continue'); + + // Optimize the most common form: 'continue;'. + if (source.charCodeAt(index) === 0x3B) { + lex(); + + if (!state.inIteration) { + throwError(Messages.IllegalContinue); + } + + return node.finishContinueStatement(null); + } + + if (peekLineTerminator()) { + if (!state.inIteration) { + throwError(Messages.IllegalContinue); + } + + return node.finishContinueStatement(null); + } + + if (lookahead.type === Token.Identifier) { + label = parseVariableIdentifier(); + + key = '$' + label.name; + if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) { + throwError(Messages.UnknownLabel, label.name); + } + } + + consumeSemicolon(); + + if (label === null && !state.inIteration) { + throwError(Messages.IllegalContinue); + } + + return node.finishContinueStatement(label); + } + + // 12.8 The break statement + + function parseBreakStatement(node) { + var label = null, key; + + expectKeyword('break'); + + // Catch the very common case first: immediately a semicolon (U+003B). + if (source.charCodeAt(index) === 0x3B) { + lex(); + + if (!(state.inIteration || state.inSwitch)) { + throwError(Messages.IllegalBreak); + } + + return node.finishBreakStatement(null); + } + + if (peekLineTerminator()) { + if (!(state.inIteration || state.inSwitch)) { + throwError(Messages.IllegalBreak); + } + + return node.finishBreakStatement(null); + } + + if (lookahead.type === Token.Identifier) { + label = parseVariableIdentifier(); + + key = '$' + label.name; + if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) { + throwError(Messages.UnknownLabel, label.name); + } + } + + consumeSemicolon(); + + if (label === null && !(state.inIteration || state.inSwitch)) { + throwError(Messages.IllegalBreak); + } + + return node.finishBreakStatement(label); + } + + // 12.9 The return statement + + function parseReturnStatement(node) { + var argument = null; + + expectKeyword('return'); + + if (!state.inFunctionBody) { + tolerateError(Messages.IllegalReturn); + } + + // 'return' followed by a space and an identifier is very common. + if (source.charCodeAt(index) === 0x20) { + if (isIdentifierStart(source.charCodeAt(index + 1))) { + argument = parseExpression(); + consumeSemicolon(); + return node.finishReturnStatement(argument); + } + } + + if (peekLineTerminator()) { + return node.finishReturnStatement(null); + } + + if (!match(';')) { + if (!match('}') && lookahead.type !== Token.EOF) { + argument = parseExpression(); + } + } + + consumeSemicolon(); + + return node.finishReturnStatement(argument); + } + + // 12.10 The with statement + + function parseWithStatement(node) { + var object, body; + + if (strict) { + // TODO(ikarienator): Should we update the test cases instead? + skipComment(); + tolerateError(Messages.StrictModeWith); + } + + expectKeyword('with'); + + expect('('); + + object = parseExpression(); + + expect(')'); + + body = parseStatement(); + + return node.finishWithStatement(object, body); + } + + // 12.10 The swith statement + + function parseSwitchCase() { + var test, consequent = [], statement, node = new Node(); + + if (matchKeyword('default')) { + lex(); + test = null; + } else { + expectKeyword('case'); + test = parseExpression(); + } + expect(':'); + + while (index < length) { + if (match('}') || matchKeyword('default') || matchKeyword('case')) { + break; + } + statement = parseStatement(); + consequent.push(statement); + } + + return node.finishSwitchCase(test, consequent); + } + + function parseSwitchStatement(node) { + var discriminant, cases, clause, oldInSwitch, defaultFound; + + expectKeyword('switch'); + + expect('('); + + discriminant = parseExpression(); + + expect(')'); + + expect('{'); + + cases = []; + + if (match('}')) { + lex(); + return node.finishSwitchStatement(discriminant, cases); + } + + oldInSwitch = state.inSwitch; + state.inSwitch = true; + defaultFound = false; + + while (index < length) { + if (match('}')) { + break; + } + clause = parseSwitchCase(); + if (clause.test === null) { + if (defaultFound) { + throwError(Messages.MultipleDefaultsInSwitch); + } + defaultFound = true; + } + cases.push(clause); + } + + state.inSwitch = oldInSwitch; + + expect('}'); + + return node.finishSwitchStatement(discriminant, cases); + } + + // 12.13 The throw statement + + function parseThrowStatement(node) { + var argument; + + expectKeyword('throw'); + + if (peekLineTerminator()) { + throwError(Messages.NewlineAfterThrow); + } + + argument = parseExpression(); + + consumeSemicolon(); + + return node.finishThrowStatement(argument); + } + + // 12.14 The try statement + + function parseCatchClause() { + var param, body, node = new Node(); + + expectKeyword('catch'); + + expect('('); + if (match(')')) { + throwUnexpectedToken(lookahead); + } + + param = parseVariableIdentifier(); + // 12.14.1 + if (strict && isRestrictedWord(param.name)) { + tolerateError(Messages.StrictCatchVariable); + } + + expect(')'); + body = parseBlock(); + return node.finishCatchClause(param, body); + } + + function parseTryStatement(node) { + var block, handlers = [], finalizer = null; + + expectKeyword('try'); + + block = parseBlock(); + + if (matchKeyword('catch')) { + handlers.push(parseCatchClause()); + } + + if (matchKeyword('finally')) { + lex(); + finalizer = parseBlock(); + } + + if (handlers.length === 0 && !finalizer) { + throwError(Messages.NoCatchOrFinally); + } + + return node.finishTryStatement(block, [], handlers, finalizer); + } + + // 12.15 The debugger statement + + function parseDebuggerStatement(node) { + expectKeyword('debugger'); + + consumeSemicolon(); + + return node.finishDebuggerStatement(); + } + + // 12 Statements + + function parseStatement() { + var type = lookahead.type, + expr, + labeledBody, + key, + node; + + if (type === Token.EOF) { + throwUnexpectedToken(lookahead); + } + + if (type === Token.Punctuator && lookahead.value === '{') { + return parseBlock(); + } + + node = new Node(); + + if (type === Token.Punctuator) { + switch (lookahead.value) { + case ';': + return parseEmptyStatement(node); + case '(': + return parseExpressionStatement(node); + default: + break; + } + } else if (type === Token.Keyword) { + switch (lookahead.value) { + case 'break': + return parseBreakStatement(node); + case 'continue': + return parseContinueStatement(node); + case 'debugger': + return parseDebuggerStatement(node); + case 'do': + return parseDoWhileStatement(node); + case 'for': + return parseForStatement(node); + case 'function': + return parseFunctionDeclaration(node); + case 'if': + return parseIfStatement(node); + case 'return': + return parseReturnStatement(node); + case 'switch': + return parseSwitchStatement(node); + case 'throw': + return parseThrowStatement(node); + case 'try': + return parseTryStatement(node); + case 'var': + return parseVariableStatement(node); + case 'while': + return parseWhileStatement(node); + case 'with': + return parseWithStatement(node); + default: + break; + } + } + + expr = parseExpression(); + + // 12.12 Labelled Statements + if ((expr.type === Syntax.Identifier) && match(':')) { + lex(); + + key = '$' + expr.name; + if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) { + throwError(Messages.Redeclaration, 'Label', expr.name); + } + + state.labelSet[key] = true; + labeledBody = parseStatement(); + delete state.labelSet[key]; + return node.finishLabeledStatement(expr, labeledBody); + } + + consumeSemicolon(); + + return node.finishExpressionStatement(expr); + } + + // 13 Function Definition + + function parseFunctionSourceElements() { + var sourceElement, sourceElements = [], token, directive, firstRestricted, + oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesisCount, + node = new Node(); + + expect('{'); + + while (index < length) { + if (lookahead.type !== Token.StringLiteral) { + break; + } + token = lookahead; + + sourceElement = parseSourceElement(); + sourceElements.push(sourceElement); + if (sourceElement.expression.type !== Syntax.Literal) { + // this is not directive + break; + } + directive = source.slice(token.start + 1, token.end - 1); + if (directive === 'use strict') { + strict = true; + if (firstRestricted) { + tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral); + } + } else { + if (!firstRestricted && token.octal) { + firstRestricted = token; + } + } + } + + oldLabelSet = state.labelSet; + oldInIteration = state.inIteration; + oldInSwitch = state.inSwitch; + oldInFunctionBody = state.inFunctionBody; + oldParenthesisCount = state.parenthesizedCount; + + state.labelSet = {}; + state.inIteration = false; + state.inSwitch = false; + state.inFunctionBody = true; + state.parenthesizedCount = 0; + + while (index < length) { + if (match('}')) { + break; + } + sourceElement = parseSourceElement(); + if (typeof sourceElement === 'undefined') { + break; + } + sourceElements.push(sourceElement); + } + + expect('}'); + + state.labelSet = oldLabelSet; + state.inIteration = oldInIteration; + state.inSwitch = oldInSwitch; + state.inFunctionBody = oldInFunctionBody; + state.parenthesizedCount = oldParenthesisCount; + + return node.finishBlockStatement(sourceElements); + } + + function validateParam(options, param, name) { + var key = '$' + name; + if (strict) { + if (isRestrictedWord(name)) { + options.stricted = param; + options.message = Messages.StrictParamName; + } + if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { + options.stricted = param; + options.message = Messages.StrictParamDupe; + } + } else if (!options.firstRestricted) { + if (isRestrictedWord(name)) { + options.firstRestricted = param; + options.message = Messages.StrictParamName; + } else if (isStrictModeReservedWord(name)) { + options.firstRestricted = param; + options.message = Messages.StrictReservedWord; + } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { + options.firstRestricted = param; + options.message = Messages.StrictParamDupe; + } + } + options.paramSet[key] = true; + } + + function parseParam(options) { + var token, param, def; + + token = lookahead; + param = parseVariableIdentifier(); + validateParam(options, token, token.value); + if (match('=')) { + lex(); + def = parseAssignmentExpression(); + ++options.defaultCount; + } + + options.params.push(param); + options.defaults.push(def); + + return !match(')'); + } + + function parseParams(firstRestricted) { + var options; + + options = { + params: [], + defaultCount: 0, + defaults: [], + firstRestricted: firstRestricted + }; + + expect('('); + + if (!match(')')) { + options.paramSet = {}; + while (index < length) { + if (!parseParam(options)) { + break; + } + expect(','); + } + } + + expect(')'); + + if (options.defaultCount === 0) { + options.defaults = []; + } + + return { + params: options.params, + defaults: options.defaults, + stricted: options.stricted, + firstRestricted: options.firstRestricted, + message: options.message + }; + } + + function parseFunctionDeclaration() { + var id, params = [], defaults = [], body, token, stricted, tmp, firstRestricted, message, previousStrict, node = new Node(); + + expectKeyword('function'); + token = lookahead; + id = parseVariableIdentifier(); + if (strict) { + if (isRestrictedWord(token.value)) { + tolerateUnexpectedToken(token, Messages.StrictFunctionName); + } + } else { + if (isRestrictedWord(token.value)) { + firstRestricted = token; + message = Messages.StrictFunctionName; + } else if (isStrictModeReservedWord(token.value)) { + firstRestricted = token; + message = Messages.StrictReservedWord; + } + } + + tmp = parseParams(firstRestricted); + params = tmp.params; + defaults = tmp.defaults; + stricted = tmp.stricted; + firstRestricted = tmp.firstRestricted; + if (tmp.message) { + message = tmp.message; + } + + previousStrict = strict; + body = parseFunctionSourceElements(); + if (strict && firstRestricted) { + throwUnexpectedToken(firstRestricted, message); + } + if (strict && stricted) { + tolerateUnexpectedToken(stricted, message); + } + strict = previousStrict; + + return node.finishFunctionDeclaration(id, params, defaults, body); + } + + function parseFunctionExpression() { + var token, id = null, stricted, firstRestricted, message, tmp, + params = [], defaults = [], body, previousStrict, node = new Node(); + + expectKeyword('function'); + + if (!match('(')) { + token = lookahead; + id = parseVariableIdentifier(); + if (strict) { + if (isRestrictedWord(token.value)) { + tolerateUnexpectedToken(token, Messages.StrictFunctionName); + } + } else { + if (isRestrictedWord(token.value)) { + firstRestricted = token; + message = Messages.StrictFunctionName; + } else if (isStrictModeReservedWord(token.value)) { + firstRestricted = token; + message = Messages.StrictReservedWord; + } + } + } + + tmp = parseParams(firstRestricted); + params = tmp.params; + defaults = tmp.defaults; + stricted = tmp.stricted; + firstRestricted = tmp.firstRestricted; + if (tmp.message) { + message = tmp.message; + } + + previousStrict = strict; + body = parseFunctionSourceElements(); + if (strict && firstRestricted) { + throwUnexpectedToken(firstRestricted, message); + } + if (strict && stricted) { + tolerateUnexpectedToken(stricted, message); + } + strict = previousStrict; + + return node.finishFunctionExpression(id, params, defaults, body); + } + + // 14 Program + + function parseSourceElement() { + if (lookahead.type === Token.Keyword) { + switch (lookahead.value) { + case 'const': + case 'let': + return parseConstLetDeclaration(lookahead.value); + case 'function': + return parseFunctionDeclaration(); + default: + return parseStatement(); + } + } + + if (lookahead.type !== Token.EOF) { + return parseStatement(); + } + } + + function parseSourceElements() { + var sourceElement, sourceElements = [], token, directive, firstRestricted; + + while (index < length) { + token = lookahead; + if (token.type !== Token.StringLiteral) { + break; + } + + sourceElement = parseSourceElement(); + sourceElements.push(sourceElement); + if (sourceElement.expression.type !== Syntax.Literal) { + // this is not directive + break; + } + directive = source.slice(token.start + 1, token.end - 1); + if (directive === 'use strict') { + strict = true; + if (firstRestricted) { + tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral); + } + } else { + if (!firstRestricted && token.octal) { + firstRestricted = token; + } + } + } + + while (index < length) { + sourceElement = parseSourceElement(); + /* istanbul ignore if */ + if (typeof sourceElement === 'undefined') { + break; + } + sourceElements.push(sourceElement); + } + return sourceElements; + } + + function parseProgram() { + var body, node; + + skipComment(); + peek(); + node = new Node(); + strict = false; + + body = parseSourceElements(); + return node.finishProgram(body); + } + + function filterTokenLocation() { + var i, entry, token, tokens = []; + + for (i = 0; i < extra.tokens.length; ++i) { + entry = extra.tokens[i]; + token = { + type: entry.type, + value: entry.value + }; + if (entry.regex) { + token.regex = { + pattern: entry.regex.pattern, + flags: entry.regex.flags + }; + } + if (extra.range) { + token.range = entry.range; + } + if (extra.loc) { + token.loc = entry.loc; + } + tokens.push(token); + } + + extra.tokens = tokens; + } + + function tokenize(code, options) { + var toString, + tokens; + + toString = String; + if (typeof code !== 'string' && !(code instanceof String)) { + code = toString(code); + } + + source = code; + index = 0; + lineNumber = (source.length > 0) ? 1 : 0; + lineStart = 0; + length = source.length; + lookahead = null; + state = { + allowIn: true, + labelSet: {}, + inFunctionBody: false, + inIteration: false, + inSwitch: false, + lastCommentStart: -1 + }; + + extra = {}; + + // Options matching. + options = options || {}; + + // Of course we collect tokens here. + options.tokens = true; + extra.tokens = []; + extra.tokenize = true; + // The following two fields are necessary to compute the Regex tokens. + extra.openParenToken = -1; + extra.openCurlyToken = -1; + + extra.range = (typeof options.range === 'boolean') && options.range; + extra.loc = (typeof options.loc === 'boolean') && options.loc; + + if (typeof options.comment === 'boolean' && options.comment) { + extra.comments = []; + } + if (typeof options.tolerant === 'boolean' && options.tolerant) { + extra.errors = []; + } + + try { + peek(); + if (lookahead.type === Token.EOF) { + return extra.tokens; + } + + lex(); + while (lookahead.type !== Token.EOF) { + try { + lex(); + } catch (lexError) { + if (extra.errors) { + extra.errors.push(lexError); + // We have to break on the first error + // to avoid infinite loops. + break; + } else { + throw lexError; + } + } + } + + filterTokenLocation(); + tokens = extra.tokens; + if (typeof extra.comments !== 'undefined') { + tokens.comments = extra.comments; + } + if (typeof extra.errors !== 'undefined') { + tokens.errors = extra.errors; + } + } catch (e) { + throw e; + } finally { + extra = {}; + } + return tokens; + } + + function parse(code, options) { + var program, toString; + + toString = String; + if (typeof code !== 'string' && !(code instanceof String)) { + code = toString(code); + } + + source = code; + index = 0; + lineNumber = (source.length > 0) ? 1 : 0; + lineStart = 0; + length = source.length; + lookahead = null; + state = { + allowIn: true, + labelSet: {}, + parenthesisCount: 0, + inFunctionBody: false, + inIteration: false, + inSwitch: false, + lastCommentStart: -1 + }; + + extra = {}; + if (typeof options !== 'undefined') { + extra.range = (typeof options.range === 'boolean') && options.range; + extra.loc = (typeof options.loc === 'boolean') && options.loc; + extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment; + + if (extra.loc && options.source !== null && options.source !== undefined) { + extra.source = toString(options.source); + } + + if (typeof options.tokens === 'boolean' && options.tokens) { + extra.tokens = []; + } + if (typeof options.comment === 'boolean' && options.comment) { + extra.comments = []; + } + if (typeof options.tolerant === 'boolean' && options.tolerant) { + extra.errors = []; + } + if (extra.attachComment) { + extra.range = true; + extra.comments = []; + extra.bottomRightStack = []; + extra.trailingComments = []; + extra.leadingComments = []; + } + } + + try { + program = parseProgram(); + if (typeof extra.comments !== 'undefined') { + program.comments = extra.comments; + } + if (typeof extra.tokens !== 'undefined') { + filterTokenLocation(); + program.tokens = extra.tokens; + } + if (typeof extra.errors !== 'undefined') { + program.errors = extra.errors; + } + } catch (e) { + throw e; + } finally { + extra = {}; + } + + return program; + } + + // Sync with *.json manifests. + exports.version = '2.0.0'; + + exports.tokenize = tokenize; + + exports.parse = parse; + + // Deep copy. + /* istanbul ignore next */ + exports.Syntax = (function () { + var name, types = {}; + + if (typeof Object.create === 'function') { + types = Object.create(null); + } + + for (name in Syntax) { + if (Syntax.hasOwnProperty(name)) { + types[name] = Syntax[name]; + } + } + + if (typeof Object.freeze === 'function') { + Object.freeze(types); + } + + return types; + }()); + +})); +/* vim: set sw=4 ts=4 et tw=80 : */ + +},{}]},{},[1])(1) +}); \ No newline at end of file diff --git a/mdast-yaml.min.js b/mdast-yaml.min.js new file mode 100644 index 0000000..18f16e7 --- /dev/null +++ b/mdast-yaml.min.js @@ -0,0 +1 @@ +!function(b,a){typeof exports==='object'&&typeof module!=='undefined'?module.exports=b():typeof define==='function'&&define.amd?define([],b):(typeof window!=='undefined'?a=window:typeof global!=='undefined'?a=global:typeof self!=='undefined'?a=self:a=this,a.mdastYAML=b())}(function(){var a;return function a(b,c,e){function f(d,k){if(!c[d]){if(!b[d]){var i=typeof require=='function'&&require;if(!k&&i)return i(d,!0);if(g)return g(d,!0);var j=new Error("Cannot find module '"+d+"'");throw j.code='MODULE_NOT_FOUND',j}var h=c[d]={exports:{}};b[d][0].call(h.exports,function(c){var a=b[d][1][c];return f(a?a:c)},h,h.exports,a,b,c,e)}return c[d].exports}var g=typeof require=='function'&&require;for(var d=0;d1024&&(c+='? 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@@ +{ + "name": "mdast-yaml", + "version": "0.1.0", + "description": "Parse and stringify YAML code blocks in mdast", + "license": "MIT", + "keywords": [ + "yaml", + "parse", + "parser", + "serializer", + "mdast" + ], + "dependencies": { + "js-yaml": "^3.2.0" + }, + "repository": { + "type": "git", + "url": "https://github.com/wooorm/mdast-yaml.git" + }, + "author": "Titus Wormer ", + "peerDependencies": { + "mdast": ">=0.14.0" + }, + "devDependencies": { + "browserify": "^9.0.0", + "eslint": "^0.17.0", + "esmangle": "^1.0.0", + "istanbul": "^0.3.0", + "jscs": "^1.0.0", + "jscs-jsdoc": "^0.4.0", + "mdast": "^0.14.0", + "mdast-github": "^0.2.0", + "mdast-toc": "^0.2.0", + "mdast-usage": "^0.2.0", + "mocha": "^2.0.0", + "yaml": "^0.2.0" + }, + "scripts": { + "test-api": "mocha --check-leaks test/index.js", + "test-coveralls": "istanbul cover _mocha --report lcovonly -- --check-leaks test/index.js", + "test-coverage": "istanbul cover _mocha -- test/index.js", + "test-travis": "npm run test-coveralls", + "test": "npm run test-api", + "lint-api": "eslint index.js", + "lint-test": "eslint --env mocha test/index.js", + "lint-script": "eslint example.js", + "lint-style": "jscs --reporter inline index.js example.js test/index.js", + "lint": "npm run lint-api && npm run lint-test && npm run lint-script && npm run lint-style", + "make": "npm run lint && npm run test-coverage", + "bundle": "browserify --no-builtins index.js -s mdastYAML > mdast-yaml.js", + "postbundle": "esmangle mdast-yaml.js > mdast-yaml.min.js", + "build-md": "mdast . --output", + "build-history": "mdast History.md --no-ignore --setting setext --output", + "build": "npm run build-md && npm run build-history && npm run bundle", + "prepublish": "npm run build" + } +} diff --git a/test/index.js b/test/index.js new file mode 100644 index 0000000..7c6e7c4 --- /dev/null +++ b/test/index.js @@ -0,0 +1,146 @@ +'use strict'; + +/* + * Dependencies. + */ + +var assert = require('assert'); +var tjYAML = require('yaml'); +var mdast = require('mdast'); +var mdastYAML = require('..'); + +/** + * Shortcut to process. + * + * @param {string} value + * @param {Object?} options + * @return {string} + */ +function yaml(value, options, parseOnly) { + var parser = mdast.use(mdastYAML, options); + var ast = parser.parse(value); + + return parseOnly ? ast : parser.stringify(ast); +} + +/* + * Tests. + */ + +describe('mdast-yaml()', function () { + it('should be a function', function () { + assert(typeof mdastYAML === 'function'); + }); + + it('should parse and stringify yaml', function () { + assert(yaml([ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n')) === [ + '---', + 'hello: world', + '---', + '', + '# Foo bar', + '' + ].join('\n')); + }); + + it('should support empty yaml', function () { + assert(yaml([ + '---', + '---', + '', + '# Foo bar', + '' + ].join('\n')) === [ + '---', + '---', + '', + '# Foo bar', + '' + ].join('\n')); + }); + + it('should accept `parse` and `stringify`', function () { + assert(yaml([ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n'), { + 'parse': 'load', + 'stringify': 'dump' + }) === [ + '---', + 'hello: world', + '---', + '', + '# Foo bar', + '' + ].join('\n')); + }); + + it('should expose a `yaml` property', function () { + var ast = yaml([ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n'), null, true).children[0]; + + assert('yaml' in ast); + assert('hello' in ast.yaml); + assert(ast.yaml.hello === 'world'); + }); + + it('should not stringify yaml when `prettify: false`', function () { + assert(yaml([ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n'), { + 'prettify': false + }) === [ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n')); + }); + + it('should accept `library`', function () { + var ast = yaml([ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n'), { + 'library': tjYAML, + 'parse': 'eval' + }, true).children[0]; + + /* + * TJs `js-yaml` is a bit lacking, such as not + * supporting quoted keys. + */ + + assert('yaml' in ast); + assert(ast.yaml === 'hello'); + }); +});