1 var BigNumber = require('bignumber.js');
9 NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
11 See http://www.JSON.org/js.html
14 This code should be minified before deployment.
15 See http://javascript.crockford.com/jsmin.html
17 USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
21 This file creates a global JSON object containing two methods: stringify
24 JSON.stringify(value, replacer, space)
25 value any JavaScript value, usually an object or array.
27 replacer an optional parameter that determines how object
28 values are stringified for objects. It can be a
29 function or an array of strings.
31 space an optional parameter that specifies the indentation
32 of nested structures. If it is omitted, the text will
33 be packed without extra whitespace. If it is a number,
34 it will specify the number of spaces to indent at each
35 level. If it is a string (such as '\t' or ' '),
36 it contains the characters used to indent at each level.
38 This method produces a JSON text from a JavaScript value.
40 When an object value is found, if the object contains a toJSON
41 method, its toJSON method will be called and the result will be
42 stringified. A toJSON method does not serialize: it returns the
43 value represented by the name/value pair that should be serialized,
44 or undefined if nothing should be serialized. The toJSON method
45 will be passed the key associated with the value, and this will be
48 For example, this would serialize Dates as ISO strings.
50 Date.prototype.toJSON = function (key) {
52 // Format integers to have at least two digits.
53 return n < 10 ? '0' + n : n;
56 return this.getUTCFullYear() + '-' +
57 f(this.getUTCMonth() + 1) + '-' +
58 f(this.getUTCDate()) + 'T' +
59 f(this.getUTCHours()) + ':' +
60 f(this.getUTCMinutes()) + ':' +
61 f(this.getUTCSeconds()) + 'Z';
64 You can provide an optional replacer method. It will be passed the
65 key and value of each member, with this bound to the containing
66 object. The value that is returned from your method will be
67 serialized. If your method returns undefined, then the member will
68 be excluded from the serialization.
70 If the replacer parameter is an array of strings, then it will be
71 used to select the members to be serialized. It filters the results
72 such that only members with keys listed in the replacer array are
75 Values that do not have JSON representations, such as undefined or
76 functions, will not be serialized. Such values in objects will be
77 dropped; in arrays they will be replaced with null. You can use
78 a replacer function to replace those with JSON values.
79 JSON.stringify(undefined) returns undefined.
81 The optional space parameter produces a stringification of the
82 value that is filled with line breaks and indentation to make it
85 If the space parameter is a non-empty string, then that string will
86 be used for indentation. If the space parameter is a number, then
87 the indentation will be that many spaces.
91 text = JSON.stringify(['e', {pluribus: 'unum'}]);
92 // text is '["e",{"pluribus":"unum"}]'
95 text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
96 // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
98 text = JSON.stringify([new Date()], function (key, value) {
99 return this[key] instanceof Date ?
100 'Date(' + this[key] + ')' : value;
102 // text is '["Date(---current time---)"]'
105 JSON.parse(text, reviver)
106 This method parses a JSON text to produce an object or array.
107 It can throw a SyntaxError exception.
109 The optional reviver parameter is a function that can filter and
110 transform the results. It receives each of the keys and values,
111 and its return value is used instead of the original value.
112 If it returns what it received, then the structure is not modified.
113 If it returns undefined then the member is deleted.
117 // Parse the text. Values that look like ISO date strings will
118 // be converted to Date objects.
120 myData = JSON.parse(text, function (key, value) {
122 if (typeof value === 'string') {
124 /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
126 return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
133 myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
135 if (typeof value === 'string' &&
136 value.slice(0, 5) === 'Date(' &&
137 value.slice(-1) === ')') {
138 d = new Date(value.slice(5, -1));
147 This is a reference implementation. You are free to copy, modify, or
151 /*jslint evil: true, regexp: true */
153 /*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
154 call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
155 getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
156 lastIndex, length, parse, prototype, push, replace, slice, stringify,
157 test, toJSON, toString, valueOf
161 // Create a JSON object only if one does not already exist. We create the
162 // methods in a closure to avoid creating global variables.
164 var JSON = module.exports;
170 // Format integers to have at least two digits.
171 return n < 10 ? '0' + n : n;
174 var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
175 escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
178 meta = { // table of character substitutions
190 function quote(string) {
192 // If the string contains no control characters, no quote characters, and no
193 // backslash characters, then we can safely slap some quotes around it.
194 // Otherwise we must also replace the offending characters with safe escape
197 escapable.lastIndex = 0;
198 return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
200 return typeof c === 'string'
202 : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
203 }) + '"' : '"' + string + '"';
207 function str(key, holder) {
209 // Produce a string from holder[key].
211 var i, // The loop counter.
212 k, // The member key.
213 v, // The member value.
218 isBigNumber = value != null && (value instanceof BigNumber || BigNumber.isBigNumber(value));
220 // If the value has a toJSON method, call it to obtain a replacement value.
222 if (value && typeof value === 'object' &&
223 typeof value.toJSON === 'function') {
224 value = value.toJSON(key);
227 // If we were called with a replacer function, then call the replacer to
228 // obtain a replacement value.
230 if (typeof rep === 'function') {
231 value = rep.call(holder, key, value);
234 // What happens next depends on the value's type.
236 switch (typeof value) {
246 // JSON numbers must be finite. Encode non-finite numbers as null.
248 return isFinite(value) ? String(value) : 'null';
253 // If the value is a boolean or null, convert it to a string. Note:
254 // typeof null does not produce 'null'. The case is included here in
255 // the remote chance that this gets fixed someday.
257 return String(value);
259 // If the type is 'object', we might be dealing with an object or an array or
264 // Due to a specification blunder in ECMAScript, typeof null is 'object',
265 // so watch out for that case.
271 // Make an array to hold the partial results of stringifying this object value.
276 // Is the value an array?
278 if (Object.prototype.toString.apply(value) === '[object Array]') {
280 // The value is an array. Stringify every element. Use null as a placeholder
281 // for non-JSON values.
283 length = value.length;
284 for (i = 0; i < length; i += 1) {
285 partial[i] = str(i, value) || 'null';
288 // Join all of the elements together, separated with commas, and wrap them in
291 v = partial.length === 0
294 ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
295 : '[' + partial.join(',') + ']';
300 // If the replacer is an array, use it to select the members to be stringified.
302 if (rep && typeof rep === 'object') {
304 for (i = 0; i < length; i += 1) {
305 if (typeof rep[i] === 'string') {
309 partial.push(quote(k) + (gap ? ': ' : ':') + v);
315 // Otherwise, iterate through all of the keys in the object.
317 Object.keys(value).forEach(function(k) {
318 var v = str(k, value);
320 partial.push(quote(k) + (gap ? ': ' : ':') + v);
325 // Join all of the member texts together, separated with commas,
326 // and wrap them in braces.
328 v = partial.length === 0
331 ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
332 : '{' + partial.join(',') + '}';
338 // If the JSON object does not yet have a stringify method, give it one.
340 if (typeof JSON.stringify !== 'function') {
341 JSON.stringify = function (value, replacer, space) {
343 // The stringify method takes a value and an optional replacer, and an optional
344 // space parameter, and returns a JSON text. The replacer can be a function
345 // that can replace values, or an array of strings that will select the keys.
346 // A default replacer method can be provided. Use of the space parameter can
347 // produce text that is more easily readable.
353 // If the space parameter is a number, make an indent string containing that
356 if (typeof space === 'number') {
357 for (i = 0; i < space; i += 1) {
361 // If the space parameter is a string, it will be used as the indent string.
363 } else if (typeof space === 'string') {
367 // If there is a replacer, it must be a function or an array.
368 // Otherwise, throw an error.
371 if (replacer && typeof replacer !== 'function' &&
372 (typeof replacer !== 'object' ||
373 typeof replacer.length !== 'number')) {
374 throw new Error('JSON.stringify');
377 // Make a fake root object containing our value under the key of ''.
378 // Return the result of stringifying the value.
380 return str('', {'': value});