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92 lines
3.2 KiB
JavaScript
92 lines
3.2 KiB
JavaScript
12 years ago
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define("dojo/_base/json", ["./kernel", "../json"], function(dojo, json){
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// module:
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// dojo/_base/json
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/*=====
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return {
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// summary:
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// This module defines the dojo JSON API.
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};
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=====*/
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dojo.fromJson = function(/*String*/ js){
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// summary:
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// Parses a JavaScript expression and returns a JavaScript value.
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// description:
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// Throws for invalid JavaScript expressions. It does not use a strict JSON parser. It
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// always delegates to eval(). The content passed to this method must therefore come
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// from a trusted source.
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// It is recommend that you use dojo/json's parse function for an
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// implementation uses the (faster) native JSON parse when available.
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// js:
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// a string literal of a JavaScript expression, for instance:
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// `'{ "foo": [ "bar", 1, { "baz": "thud" } ] }'`
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return eval("(" + js + ")"); // Object
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};
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/*=====
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dojo._escapeString = function(){
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// summary:
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// Adds escape sequences for non-visual characters, double quote and
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// backslash and surrounds with double quotes to form a valid string
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// literal.
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};
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=====*/
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dojo._escapeString = json.stringify; // just delegate to json.stringify
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dojo.toJsonIndentStr = "\t";
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dojo.toJson = function(/*Object*/ it, /*Boolean?*/ prettyPrint){
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// summary:
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// Returns a [JSON](http://json.org) serialization of an object.
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// description:
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// Returns a [JSON](http://json.org) serialization of an object.
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// Note that this doesn't check for infinite recursion, so don't do that!
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// It is recommend that you use dojo/json's stringify function for an lighter
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// and faster implementation that matches the native JSON API and uses the
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// native JSON serializer when available.
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// it:
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// an object to be serialized. Objects may define their own
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// serialization via a special "__json__" or "json" function
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// property. If a specialized serializer has been defined, it will
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// be used as a fallback.
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// Note that in 1.6, toJson would serialize undefined, but this no longer supported
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// since it is not supported by native JSON serializer.
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// prettyPrint:
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// if true, we indent objects and arrays to make the output prettier.
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// The variable `dojo.toJsonIndentStr` is used as the indent string --
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// to use something other than the default (tab), change that variable
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// before calling dojo.toJson().
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// Note that if native JSON support is available, it will be used for serialization,
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// and native implementations vary on the exact spacing used in pretty printing.
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// returns:
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// A JSON string serialization of the passed-in object.
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// example:
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// simple serialization of a trivial object
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// | var jsonStr = dojo.toJson({ howdy: "stranger!", isStrange: true });
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// | doh.is('{"howdy":"stranger!","isStrange":true}', jsonStr);
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// example:
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// a custom serializer for an objects of a particular class:
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// | dojo.declare("Furby", null, {
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// | furbies: "are strange",
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// | furbyCount: 10,
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// | __json__: function(){
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// | },
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// | });
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// use dojo/json
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return json.stringify(it, function(key, value){
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if(value){
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var tf = value.__json__||value.json;
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if(typeof tf == "function"){
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return tf.call(value);
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}
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}
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return value;
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}, prettyPrint && dojo.toJsonIndentStr); // String
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};
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return dojo;
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});
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