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  1. var XJSON = new function () {
  2.  
  3. 	function isPureObject(obj) { return !!obj && typeof obj == 'object' && !(obj instanceof Array)}
  4.  
  5.  
  6. 	this.parse = function (xjson) {
  7.  
  8. 		var refs = JSON.parse(xjson)
  9.  
  10. 		var vals = refs.map(function (ref) {
  11. 			return isPureObject(ref) ? {} : ref
  12. 		})
  13.  
  14. 		refs.reduceRight(function (_ ,ref, id) {
  15. 			if (!isPureObject(ref)) return
  16. 			Object.keys(ref).forEach(function (key) {
  17. 				vals[id][key] = vals[ref[key]]
  18. 			})
  19. 		}, undefined)
  20.  
  21. 		return vals[0]
  22.  
  23. 	}
  24.  
  25.  
  26. 	this.stringify = function (obj) {
  27.  
  28. 		var refs = [], vals = []
  29.  
  30.  
  31. 		function conv(obj, id) {
  32.  
  33. 			vals[id] = refs[id] = obj
  34. 			if (!isPureObject(obj)) return
  35. 			var ref = refs[id] = {}
  36.  
  37. 			Object.getOwnPropertyNames(obj).forEach(function (key) {
  38.  
  39. 				var val = obj[key]
  40. 				var id = ref[key] = vals.indexOf(val)
  41. 				if (id != -1) return
  42. 				var newid = ref[key] = vals.length
  43.  
  44. 				conv(val, newid)
  45.  
  46. 			})
  47. 		}
  48.  
  49.  
  50. 		conv(obj, 0)
  51. 		return JSON.stringify(refs)
  52.  
  53. 	}
  54.  
  55. }
  56.  
  57.  
  58.  
  59. function test(id, obj) {
  60.  
  61. 	console.group('test ' + id)
  62. 	var xjson = XJSON.stringify(obj)
  63. 	console.log(xjson)
  64. 	var xobj  = XJSON.parse(xjson)
  65. 	console.dir(xobj)
  66. 	console.dir(obj)
  67. 	console.groupEnd('test ' + id)
  68.  
  69. }
  70.  
  71.  
  72.  
  73. function testing() {
  74.  
  75. 	var obj1 = { o: {} }
  76. 	obj1.o = obj1
  77.  
  78. 	var obj2 = {
  79. 		a: {
  80. 			b: {
  81. 				c: 'xyz',
  82. 				d: {},
  83. 				e: 123,
  84. 				f: {},
  85. 				g: [true, false]
  86. 			},
  87. 			h: {}
  88. 		} 
  89. 	}
  90.  
  91. 	obj2.a.b.d = obj2
  92. 	obj2.a.b.f = obj2.a
  93. 	obj2.a.h = obj2.a.b
  94.  
  95. 	test(1, obj1)
  96. 	test(2, obj2)
  97.  
  98. }
  99.  
  100.  
  101. testing()
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https://ideone.com/Zxp7kN
language:
Text (text 6.10)
created:
10 years ago
visibility:
public

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