diff -r 000000000000 -r 40c8f766c9b8 src/cm/media/js/lib/yui/yui_3.0.0b1/build/json/json-parse-debug.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cm/media/js/lib/yui/yui_3.0.0b1/build/json/json-parse-debug.js Mon Nov 23 15:14:29 2009 +0100 @@ -0,0 +1,237 @@ +/* +Copyright (c) 2009, Yahoo! Inc. All rights reserved. +Code licensed under the BSD License: +http://developer.yahoo.net/yui/license.txt +version: 3.0.0b1 +build: 1163 +*/ +YUI.add('json-parse', function(Y) { + +/** + *

The JSON module adds support for serializing JavaScript objects into + * JSON strings and parsing JavaScript objects from strings in JSON format.

+ * + *

The JSON namespace is added to your YUI instance including static methods + * Y.JSON.parse(..) and Y.JSON.stringify(..).

+ * + *

The functionality and method signatures follow the ECMAScript 5 + * specification. In browsers with native JSON support, the native + * implementation is used.

+ * + *

The json module is a rollup of json-parse and + * json-stringify.

+ * + *

As their names suggest, json-parse adds support for parsing + * JSON data (Y.JSON.parse) and json-stringify for serializing + * JavaScript data into JSON strings (Y.JSON.stringify). You may choose to + * include either of the submodules individually if you don't need the + * complementary functionality, or include the rollup for both.

+ * + * @module json + * @class JSON + * @static + */ + +/** + * Provides Y.JSON.parse method to accept JSON strings and return native + * JavaScript objects. + * + * @module json + * @submodule json-parse + * @for JSON + * @static + */ + + +// All internals kept private for security reasons + + + /** + * Alias to native browser implementation of the JSON object if available. + * + * @property Native + * @type {Object} + * @private + */ +var Native = Y.config.win.JSON, + + /** + * Replace certain Unicode characters that JavaScript may handle incorrectly + * during eval--either by deleting them or treating them as line + * endings--with escape sequences. + * IMPORTANT NOTE: This regex will be used to modify the input if a match is + * found. + * + * @property _UNICODE_EXCEPTIONS + * @type {RegExp} + * @private + */ + _UNICODE_EXCEPTIONS = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, + + + /** + * First step in the safety evaluation. Regex used to replace all escape + * sequences (i.e. "\\", etc) with '@' characters (a non-JSON character). + * + * @property _ESCAPES + * @type {RegExp} + * @private + */ + _ESCAPES = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, + + /** + * Second step in the safety evaluation. Regex used to replace all simple + * values with ']' characters. + * + * @property _VALUES + * @type {RegExp} + * @private + */ + _VALUES = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, + + /** + * Third step in the safety evaluation. Regex used to remove all open + * square brackets following a colon, comma, or at the beginning of the + * string. + * + * @property _BRACKETS + * @type {RegExp} + * @private + */ + _BRACKETS = /(?:^|:|,)(?:\s*\[)+/g, + + /** + * Final step in the safety evaluation. Regex used to test the string left + * after all previous replacements for invalid characters. + * + * @property _INVALID + * @type {RegExp} + * @private + */ + _INVALID = /[^\],:{}\s]/, + + /** + * Test for JSON string of simple data string, number, boolean, or null. + * E.g. '"some string"', "true", "false", "null", or numbers "-123e+7" + * This was needed for some WIP native implementations (FF3.1b2) but may be + * unnecessary now. + * + * @property _SIMPLE + * @type {RegExp} + * @private + */ + _SIMPLE = /^\s*(?:"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)\s*$/, + + /** + * Replaces specific unicode characters with their appropriate \unnnn + * format. Some browsers ignore certain characters during eval. + * + * @method escapeException + * @param c {String} Unicode character + * @return {String} the \unnnn escapement of the character + * @private + */ + _escapeException = function (c) { + return '\\u'+('0000'+(+(c.charCodeAt(0))).toString(16)).slice(-4); + }, + + /** + * Traverses nested objects, applying a reviver function to each (key,value) + * from the scope if the key:value's containing object. The value returned + * from the function will replace the original value in the key:value pair. + * If the value returned is undefined, the key will be omitted from the + * returned object. + * + * @method _revive + * @param data {MIXED} Any JavaScript data + * @param reviver {Function} filter or mutation function + * @return {MIXED} The results of the filtered data + * @private + */ + _revive = function (data, reviver) { + var walk = function (o,key) { + var k,v,value = o[key]; + if (value && typeof value === 'object') { + for (k in value) { + if (value.hasOwnProperty(k)) { + v = walk(value, k); + if (v === undefined) { + delete value[k]; + } else { + value[k] = v; + } + } + } + } + return reviver.call(o,key,value); + }; + + return typeof reviver === 'function' ? walk({'':data},'') : data; + }, + + /** + * Parse a JSON string, returning the native JavaScript representation. + * + * @param s {string} JSON string data + * @param reviver {function} (optional) function(k,v) passed each key value + * pair of object literals, allowing pruning or altering values + * @return {MIXED} the native JavaScript representation of the JSON string + * @throws SyntaxError + * @method parse + * @static + */ + // JavaScript implementation in lieu of native browser support. Based on + // the json2.js library from http://json.org + _parse = function (s,reviver) { + if (typeof s === 'string') { + // Replace certain Unicode characters that are otherwise handled + // incorrectly by some browser implementations. + // NOTE: This modifies the input if such characters are found! + s = s.replace(_UNICODE_EXCEPTIONS, _escapeException); + + // Test for any remaining invalid characters + if (!_INVALID.test(s.replace(_ESCAPES,'@'). + replace(_VALUES,']'). + replace(_BRACKETS,''))) { + + // Eval the text into a JavaScript data structure, apply any + // reviver function, and return + return _revive( eval('(' + s + ')'), reviver ); + } + } + + throw new SyntaxError('JSON.parse'); + }, + + test; + + +// Test the level of native browser support +if (Native && Object.prototype.toString.call(Native) === '[object JSON]') { + try { + test = Native.parse('{"x":1}', function (k,v) {return k=='x' ? 2 : v;}); + switch (test.x) { + case 1 : // Reviver not supported + _parse = function (s,reviver) { + return _SIMPLE.test(s) ? + eval('(' + s + ')') : + _revive(Native.parse(s), reviver); + }; + break; + + case 2 : // Full support + _parse = function (s, reviver) { + return Native.parse(s, reviver); + }; + break; + + // default is JS implementation + } + } + catch (e) {} // defer to JS implementation +} + +Y.mix(Y.namespace('JSON'),{ parse : _parse }); + + +}, '3.0.0b1' );