mirror of
https://github.com/donl/JSON-js.git
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//
This commit is contained in:
Douglas Crockford
parent
c98948ae19
commit
bdeb882f4e
1 changed files with 149 additions and 162 deletions
311
json2.js
311
json2.js
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@ -1,158 +1,143 @@
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/*
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json2.js
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2015-05-03
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// json2.js
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// 2016-05-01
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// Public Domain.
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// NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
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// See http://www.JSON.org/js.html
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// This code should be minified before deployment.
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// See http://javascript.crockford.com/jsmin.html
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Public Domain.
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// USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
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// NOT CONTROL.
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NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
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// This file creates a global JSON object containing two methods: stringify
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// and parse. This file is provides the ES5 JSON capability to ES3 systems.
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// If a project might run on IE8 or earlier, then this file should be included.
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// This file does nothing on ES5 systems.
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See http://www.JSON.org/js.html
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// JSON.stringify(value, replacer, space)
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// value any JavaScript value, usually an object or array.
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// replacer an optional parameter that determines how object
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// values are stringified for objects. It can be a
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// function or an array of strings.
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// space an optional parameter that specifies the indentation
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// of nested structures. If it is omitted, the text will
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// be packed without extra whitespace. If it is a number,
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// it will specify the number of spaces to indent at each
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// level. If it is a string (such as '\t' or ' '),
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// it contains the characters used to indent at each level.
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// This method produces a JSON text from a JavaScript value.
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// When an object value is found, if the object contains a toJSON
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// method, its toJSON method will be called and the result will be
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// stringified. A toJSON method does not serialize: it returns the
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// value represented by the name/value pair that should be serialized,
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// or undefined if nothing should be serialized. The toJSON method
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// will be passed the key associated with the value, and this will be
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// bound to the value.
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// For example, this would serialize Dates as ISO strings.
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This code should be minified before deployment.
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See http://javascript.crockford.com/jsmin.html
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// Date.prototype.toJSON = function (key) {
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// function f(n) {
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// // Format integers to have at least two digits.
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// return n < 10
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// ? '0' + n
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// : n;
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// }
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// return this.getUTCFullYear() + '-' +
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// f(this.getUTCMonth() + 1) + '-' +
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// f(this.getUTCDate()) + 'T' +
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// f(this.getUTCHours()) + ':' +
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// f(this.getUTCMinutes()) + ':' +
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// f(this.getUTCSeconds()) + 'Z';
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// };
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USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
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NOT CONTROL.
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// You can provide an optional replacer method. It will be passed the
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// key and value of each member, with this bound to the containing
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// object. The value that is returned from your method will be
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// serialized. If your method returns undefined, then the member will
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// be excluded from the serialization.
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// If the replacer parameter is an array of strings, then it will be
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// used to select the members to be serialized. It filters the results
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// such that only members with keys listed in the replacer array are
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// stringified.
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This file creates a global JSON object containing two methods: stringify
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and parse. This file is provides the ES5 JSON capability to ES3 systems.
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If a project might run on IE8 or earlier, then this file should be included.
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This file does nothing on ES5 systems.
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// Values that do not have JSON representations, such as undefined or
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// functions, will not be serialized. Such values in objects will be
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// dropped; in arrays they will be replaced with null. You can use
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// a replacer function to replace those with JSON values.
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JSON.stringify(value, replacer, space)
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value any JavaScript value, usually an object or array.
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// JSON.stringify(undefined) returns undefined.
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replacer an optional parameter that determines how object
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values are stringified for objects. It can be a
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function or an array of strings.
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// The optional space parameter produces a stringification of the
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// value that is filled with line breaks and indentation to make it
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// easier to read.
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space an optional parameter that specifies the indentation
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of nested structures. If it is omitted, the text will
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be packed without extra whitespace. If it is a number,
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it will specify the number of spaces to indent at each
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level. If it is a string (such as '\t' or ' '),
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it contains the characters used to indent at each level.
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// If the space parameter is a non-empty string, then that string will
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// be used for indentation. If the space parameter is a number, then
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// the indentation will be that many spaces.
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This method produces a JSON text from a JavaScript value.
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// Example:
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When an object value is found, if the object contains a toJSON
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method, its toJSON method will be called and the result will be
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stringified. A toJSON method does not serialize: it returns the
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value represented by the name/value pair that should be serialized,
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or undefined if nothing should be serialized. The toJSON method
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will be passed the key associated with the value, and this will be
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bound to the value
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// text = JSON.stringify(['e', {pluribus: 'unum'}]);
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// // text is '["e",{"pluribus":"unum"}]'
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For example, this would serialize Dates as ISO strings.
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// text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
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// // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
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Date.prototype.toJSON = function (key) {
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function f(n) {
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// Format integers to have at least two digits.
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return n < 10
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? '0' + n
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: n;
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}
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// text = JSON.stringify([new Date()], function (key, value) {
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// return this[key] instanceof Date
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// ? 'Date(' + this[key] + ')'
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// : value;
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// });
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// // text is '["Date(---current time---)"]'
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return this.getUTCFullYear() + '-' +
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f(this.getUTCMonth() + 1) + '-' +
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f(this.getUTCDate()) + 'T' +
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f(this.getUTCHours()) + ':' +
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f(this.getUTCMinutes()) + ':' +
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f(this.getUTCSeconds()) + 'Z';
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};
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// JSON.parse(text, reviver)
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// This method parses a JSON text to produce an object or array.
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// It can throw a SyntaxError exception.
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You can provide an optional replacer method. It will be passed the
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key and value of each member, with this bound to the containing
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object. The value that is returned from your method will be
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serialized. If your method returns undefined, then the member will
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be excluded from the serialization.
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// The optional reviver parameter is a function that can filter and
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// transform the results. It receives each of the keys and values,
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// and its return value is used instead of the original value.
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// If it returns what it received, then the structure is not modified.
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// If it returns undefined then the member is deleted.
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If the replacer parameter is an array of strings, then it will be
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used to select the members to be serialized. It filters the results
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such that only members with keys listed in the replacer array are
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stringified.
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// Example:
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Values that do not have JSON representations, such as undefined or
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functions, will not be serialized. Such values in objects will be
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dropped; in arrays they will be replaced with null. You can use
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a replacer function to replace those with JSON values.
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JSON.stringify(undefined) returns undefined.
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// // Parse the text. Values that look like ISO date strings will
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// // be converted to Date objects.
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The optional space parameter produces a stringification of the
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value that is filled with line breaks and indentation to make it
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easier to read.
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// myData = JSON.parse(text, function (key, value) {
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// var a;
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// if (typeof value === 'string') {
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// a =
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// /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
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// if (a) {
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// return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
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// +a[5], +a[6]));
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// }
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// }
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// return value;
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// });
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If the space parameter is a non-empty string, then that string will
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be used for indentation. If the space parameter is a number, then
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the indentation will be that many spaces.
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// myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
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// var d;
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// if (typeof value === 'string' &&
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// value.slice(0, 5) === 'Date(' &&
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// value.slice(-1) === ')') {
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// d = new Date(value.slice(5, -1));
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// if (d) {
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// return d;
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// }
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// }
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// return value;
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// });
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Example:
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// This is a reference implementation. You are free to copy, modify, or
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// redistribute.
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text = JSON.stringify(['e', {pluribus: 'unum'}]);
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// text is '["e",{"pluribus":"unum"}]'
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text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
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// text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
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text = JSON.stringify([new Date()], function (key, value) {
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return this[key] instanceof Date
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? 'Date(' + this[key] + ')'
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: value;
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});
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// text is '["Date(---current time---)"]'
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JSON.parse(text, reviver)
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This method parses a JSON text to produce an object or array.
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It can throw a SyntaxError exception.
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The optional reviver parameter is a function that can filter and
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transform the results. It receives each of the keys and values,
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and its return value is used instead of the original value.
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If it returns what it received, then the structure is not modified.
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If it returns undefined then the member is deleted.
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Example:
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// Parse the text. Values that look like ISO date strings will
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// be converted to Date objects.
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myData = JSON.parse(text, function (key, value) {
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var a;
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if (typeof value === 'string') {
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a =
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/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
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if (a) {
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return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
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+a[5], +a[6]));
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}
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}
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return value;
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});
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myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
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var d;
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if (typeof value === 'string' &&
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value.slice(0, 5) === 'Date(' &&
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value.slice(-1) === ')') {
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d = new Date(value.slice(5, -1));
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if (d) {
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return d;
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}
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}
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return value;
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});
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This is a reference implementation. You are free to copy, modify, or
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redistribute.
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*/
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/*jslint
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eval, for, this
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/*jslint
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eval, for, this
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*/
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/*property
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@ -172,21 +157,21 @@ if (typeof JSON !== 'object') {
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(function () {
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'use strict';
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var rx_one = /^[\],:{}\s]*$/,
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rx_two = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,
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rx_three = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,
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rx_four = /(?:^|:|,)(?:\s*\[)+/g,
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rx_escapable = /[\\\"\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
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rx_dangerous = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
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var rx_one = /^[\],:{}\s]*$/;
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var rx_two = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
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var rx_three = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
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var rx_four = /(?:^|:|,)(?:\s*\[)+/g;
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var rx_escapable = /[\\\"\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
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var rx_dangerous = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
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function f(n) {
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// Format integers to have at least two digits.
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return n < 10
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? '0' + n
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return n < 10
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? '0' + n
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: n;
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}
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function this_value() {
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return this.valueOf();
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}
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@ -210,10 +195,10 @@ if (typeof JSON !== 'object') {
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String.prototype.toJSON = this_value;
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}
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var gap,
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indent,
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meta,
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rep;
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var gap;
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var indent;
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var meta;
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var rep;
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function quote(string) {
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@ -224,13 +209,13 @@ if (typeof JSON !== 'object') {
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// sequences.
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rx_escapable.lastIndex = 0;
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return rx_escapable.test(string)
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return rx_escapable.test(string)
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? '"' + string.replace(rx_escapable, function (a) {
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var c = meta[a];
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return typeof c === 'string'
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? c
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: '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
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}) + '"'
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}) + '"'
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: '"' + string + '"';
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}
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@ -239,13 +224,13 @@ if (typeof JSON !== 'object') {
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// Produce a string from holder[key].
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var i, // The loop counter.
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k, // The member key.
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v, // The member value.
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length,
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mind = gap,
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partial,
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value = holder[key];
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var i; // The loop counter.
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var k; // The member key.
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var v; // The member value.
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var length;
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var mind = gap;
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var partial;
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var value = holder[key];
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// If the value has a toJSON method, call it to obtain a replacement value.
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@ -271,8 +256,8 @@ if (typeof JSON !== 'object') {
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// JSON numbers must be finite. Encode non-finite numbers as null.
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return isFinite(value)
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? String(value)
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return isFinite(value)
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? String(value)
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: 'null';
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case 'boolean':
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@ -335,8 +320,8 @@ if (typeof JSON !== 'object') {
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v = str(k, value);
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if (v) {
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partial.push(quote(k) + (
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gap
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? ': '
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gap
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? ': '
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: ':'
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) + v);
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}
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@ -351,8 +336,8 @@ if (typeof JSON !== 'object') {
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v = str(k, value);
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if (v) {
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partial.push(quote(k) + (
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gap
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? ': '
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gap
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? ': '
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: ':'
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) + v);
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}
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@ -444,7 +429,9 @@ if (typeof JSON !== 'object') {
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// The walk method is used to recursively walk the resulting structure so
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// that modifications can be made.
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var k, v, value = holder[key];
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var k;
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var v;
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var value = holder[key];
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if (value && typeof value === 'object') {
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for (k in value) {
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if (Object.prototype.hasOwnProperty.call(value, k)) {
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|
|
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