root / snf-cyclades-app / synnefo / ui / static / snf / js / lib / json2.js @ 6de7fde5
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1 | 8d08f18a | Kostas Papadimitriou | /*
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2 | 8d08f18a | Kostas Papadimitriou | http://www.JSON.org/json2.js
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3 | 8d08f18a | Kostas Papadimitriou | 2011-02-23
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4 | 8d08f18a | Kostas Papadimitriou | |
5 | 8d08f18a | Kostas Papadimitriou | Public Domain.
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6 | 8d08f18a | Kostas Papadimitriou | |
7 | 8d08f18a | Kostas Papadimitriou | NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
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8 | 8d08f18a | Kostas Papadimitriou | |
9 | 8d08f18a | Kostas Papadimitriou | See http://www.JSON.org/js.html
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10 | 8d08f18a | Kostas Papadimitriou | |
11 | 8d08f18a | Kostas Papadimitriou | |
12 | 8d08f18a | Kostas Papadimitriou | This code should be minified before deployment.
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13 | 8d08f18a | Kostas Papadimitriou | See http://javascript.crockford.com/jsmin.html
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14 | 8d08f18a | Kostas Papadimitriou | |
15 | 8d08f18a | Kostas Papadimitriou | USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
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16 | 8d08f18a | Kostas Papadimitriou | NOT CONTROL.
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17 | 8d08f18a | Kostas Papadimitriou | |
18 | 8d08f18a | Kostas Papadimitriou | |
19 | 8d08f18a | Kostas Papadimitriou | This file creates a global JSON object containing two methods: stringify
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20 | 8d08f18a | Kostas Papadimitriou | and parse.
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21 | 8d08f18a | Kostas Papadimitriou | |
22 | 8d08f18a | Kostas Papadimitriou | JSON.stringify(value, replacer, space)
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23 | 8d08f18a | Kostas Papadimitriou | value any JavaScript value, usually an object or array.
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24 | 8d08f18a | Kostas Papadimitriou | |
25 | 8d08f18a | Kostas Papadimitriou | replacer an optional parameter that determines how object
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26 | 8d08f18a | Kostas Papadimitriou | values are stringified for objects. It can be a
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27 | 8d08f18a | Kostas Papadimitriou | function or an array of strings.
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28 | 8d08f18a | Kostas Papadimitriou | |
29 | 8d08f18a | Kostas Papadimitriou | space an optional parameter that specifies the indentation
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30 | 8d08f18a | Kostas Papadimitriou | of nested structures. If it is omitted, the text will
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31 | 8d08f18a | Kostas Papadimitriou | be packed without extra whitespace. If it is a number,
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32 | 8d08f18a | Kostas Papadimitriou | it will specify the number of spaces to indent at each
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33 | 8d08f18a | Kostas Papadimitriou | level. If it is a string (such as '\t' or ' '),
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34 | 8d08f18a | Kostas Papadimitriou | it contains the characters used to indent at each level.
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35 | 8d08f18a | Kostas Papadimitriou | |
36 | 8d08f18a | Kostas Papadimitriou | This method produces a JSON text from a JavaScript value.
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37 | 8d08f18a | Kostas Papadimitriou | |
38 | 8d08f18a | Kostas Papadimitriou | When an object value is found, if the object contains a toJSON
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39 | 8d08f18a | Kostas Papadimitriou | method, its toJSON method will be called and the result will be
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40 | 8d08f18a | Kostas Papadimitriou | stringified. A toJSON method does not serialize: it returns the
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41 | 8d08f18a | Kostas Papadimitriou | value represented by the name/value pair that should be serialized,
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42 | 8d08f18a | Kostas Papadimitriou | or undefined if nothing should be serialized. The toJSON method
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43 | 8d08f18a | Kostas Papadimitriou | will be passed the key associated with the value, and this will be
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44 | 8d08f18a | Kostas Papadimitriou | bound to the value
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45 | 8d08f18a | Kostas Papadimitriou | |
46 | 8d08f18a | Kostas Papadimitriou | For example, this would serialize Dates as ISO strings.
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47 | 8d08f18a | Kostas Papadimitriou | |
48 | 8d08f18a | Kostas Papadimitriou | Date.prototype.toJSON = function (key) {
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49 | 8d08f18a | Kostas Papadimitriou | function f(n) {
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50 | 8d08f18a | Kostas Papadimitriou | // Format integers to have at least two digits.
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51 | 8d08f18a | Kostas Papadimitriou | return n < 10 ? '0' + n : n;
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52 | 8d08f18a | Kostas Papadimitriou | }
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53 | 8d08f18a | Kostas Papadimitriou | |
54 | 8d08f18a | Kostas Papadimitriou | return this.getUTCFullYear() + '-' +
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55 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCMonth() + 1) + '-' +
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56 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCDate()) + 'T' +
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57 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCHours()) + ':' +
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58 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCMinutes()) + ':' +
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59 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCSeconds()) + 'Z';
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60 | 8d08f18a | Kostas Papadimitriou | };
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61 | 8d08f18a | Kostas Papadimitriou | |
62 | 8d08f18a | Kostas Papadimitriou | You can provide an optional replacer method. It will be passed the
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63 | 8d08f18a | Kostas Papadimitriou | key and value of each member, with this bound to the containing
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64 | 8d08f18a | Kostas Papadimitriou | object. The value that is returned from your method will be
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65 | 8d08f18a | Kostas Papadimitriou | serialized. If your method returns undefined, then the member will
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66 | 8d08f18a | Kostas Papadimitriou | be excluded from the serialization.
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67 | 8d08f18a | Kostas Papadimitriou | |
68 | 8d08f18a | Kostas Papadimitriou | If the replacer parameter is an array of strings, then it will be
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69 | 8d08f18a | Kostas Papadimitriou | used to select the members to be serialized. It filters the results
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70 | 8d08f18a | Kostas Papadimitriou | such that only members with keys listed in the replacer array are
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71 | 8d08f18a | Kostas Papadimitriou | stringified.
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72 | 8d08f18a | Kostas Papadimitriou | |
73 | 8d08f18a | Kostas Papadimitriou | Values that do not have JSON representations, such as undefined or
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74 | 8d08f18a | Kostas Papadimitriou | functions, will not be serialized. Such values in objects will be
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75 | 8d08f18a | Kostas Papadimitriou | dropped; in arrays they will be replaced with null. You can use
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76 | 8d08f18a | Kostas Papadimitriou | a replacer function to replace those with JSON values.
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77 | 8d08f18a | Kostas Papadimitriou | JSON.stringify(undefined) returns undefined.
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78 | 8d08f18a | Kostas Papadimitriou | |
79 | 8d08f18a | Kostas Papadimitriou | The optional space parameter produces a stringification of the
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80 | 8d08f18a | Kostas Papadimitriou | value that is filled with line breaks and indentation to make it
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81 | 8d08f18a | Kostas Papadimitriou | easier to read.
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82 | 8d08f18a | Kostas Papadimitriou | |
83 | 8d08f18a | Kostas Papadimitriou | If the space parameter is a non-empty string, then that string will
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84 | 8d08f18a | Kostas Papadimitriou | be used for indentation. If the space parameter is a number, then
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85 | 8d08f18a | Kostas Papadimitriou | the indentation will be that many spaces.
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86 | 8d08f18a | Kostas Papadimitriou | |
87 | 8d08f18a | Kostas Papadimitriou | Example:
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88 | 8d08f18a | Kostas Papadimitriou | |
89 | 8d08f18a | Kostas Papadimitriou | text = JSON.stringify(['e', {pluribus: 'unum'}]);
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90 | 8d08f18a | Kostas Papadimitriou | // text is '["e",{"pluribus":"unum"}]'
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91 | 8d08f18a | Kostas Papadimitriou | |
92 | 8d08f18a | Kostas Papadimitriou | |
93 | 8d08f18a | Kostas Papadimitriou | text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
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94 | 8d08f18a | Kostas Papadimitriou | // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
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95 | 8d08f18a | Kostas Papadimitriou | |
96 | 8d08f18a | Kostas Papadimitriou | text = JSON.stringify([new Date()], function (key, value) {
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97 | 8d08f18a | Kostas Papadimitriou | return this[key] instanceof Date ?
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98 | 8d08f18a | Kostas Papadimitriou | 'Date(' + this[key] + ')' : value;
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99 | 8d08f18a | Kostas Papadimitriou | });
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100 | 8d08f18a | Kostas Papadimitriou | // text is '["Date(---current time---)"]'
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101 | 8d08f18a | Kostas Papadimitriou | |
102 | 8d08f18a | Kostas Papadimitriou | |
103 | 8d08f18a | Kostas Papadimitriou | JSON.parse(text, reviver)
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104 | 8d08f18a | Kostas Papadimitriou | This method parses a JSON text to produce an object or array.
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105 | 8d08f18a | Kostas Papadimitriou | It can throw a SyntaxError exception.
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106 | 8d08f18a | Kostas Papadimitriou | |
107 | 8d08f18a | Kostas Papadimitriou | The optional reviver parameter is a function that can filter and
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108 | 8d08f18a | Kostas Papadimitriou | transform the results. It receives each of the keys and values,
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109 | 8d08f18a | Kostas Papadimitriou | and its return value is used instead of the original value.
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110 | 8d08f18a | Kostas Papadimitriou | If it returns what it received, then the structure is not modified.
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111 | 8d08f18a | Kostas Papadimitriou | If it returns undefined then the member is deleted.
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112 | 8d08f18a | Kostas Papadimitriou | |
113 | 8d08f18a | Kostas Papadimitriou | Example:
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114 | 8d08f18a | Kostas Papadimitriou | |
115 | 8d08f18a | Kostas Papadimitriou | // Parse the text. Values that look like ISO date strings will
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116 | 8d08f18a | Kostas Papadimitriou | // be converted to Date objects.
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117 | 8d08f18a | Kostas Papadimitriou | |
118 | 8d08f18a | Kostas Papadimitriou | myData = JSON.parse(text, function (key, value) {
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119 | 8d08f18a | Kostas Papadimitriou | var a;
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120 | 8d08f18a | Kostas Papadimitriou | if (typeof value === 'string') {
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121 | 8d08f18a | Kostas Papadimitriou | a =
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122 | 8d08f18a | Kostas Papadimitriou | /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
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123 | 8d08f18a | Kostas Papadimitriou | if (a) {
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124 | 8d08f18a | Kostas Papadimitriou | return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
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125 | 8d08f18a | Kostas Papadimitriou | +a[5], +a[6]));
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126 | 8d08f18a | Kostas Papadimitriou | }
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127 | 8d08f18a | Kostas Papadimitriou | }
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128 | 8d08f18a | Kostas Papadimitriou | return value;
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129 | 8d08f18a | Kostas Papadimitriou | });
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130 | 8d08f18a | Kostas Papadimitriou | |
131 | 8d08f18a | Kostas Papadimitriou | myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
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132 | 8d08f18a | Kostas Papadimitriou | var d;
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133 | 8d08f18a | Kostas Papadimitriou | if (typeof value === 'string' &&
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134 | 8d08f18a | Kostas Papadimitriou | value.slice(0, 5) === 'Date(' &&
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135 | 8d08f18a | Kostas Papadimitriou | value.slice(-1) === ')') {
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136 | 8d08f18a | Kostas Papadimitriou | d = new Date(value.slice(5, -1));
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137 | 8d08f18a | Kostas Papadimitriou | if (d) {
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138 | 8d08f18a | Kostas Papadimitriou | return d;
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139 | 8d08f18a | Kostas Papadimitriou | }
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140 | 8d08f18a | Kostas Papadimitriou | }
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141 | 8d08f18a | Kostas Papadimitriou | return value;
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142 | 8d08f18a | Kostas Papadimitriou | });
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143 | 8d08f18a | Kostas Papadimitriou | |
144 | 8d08f18a | Kostas Papadimitriou | |
145 | 8d08f18a | Kostas Papadimitriou | This is a reference implementation. You are free to copy, modify, or
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146 | 8d08f18a | Kostas Papadimitriou | redistribute.
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147 | 8d08f18a | Kostas Papadimitriou | */
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148 | 8d08f18a | Kostas Papadimitriou | |
149 | 8d08f18a | Kostas Papadimitriou | /*jslint evil: true, strict: false, regexp: false */
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150 | 8d08f18a | Kostas Papadimitriou | |
151 | 8d08f18a | Kostas Papadimitriou | /*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
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152 | 8d08f18a | Kostas Papadimitriou | call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
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153 | 8d08f18a | Kostas Papadimitriou | getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
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154 | 8d08f18a | Kostas Papadimitriou | lastIndex, length, parse, prototype, push, replace, slice, stringify,
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155 | 8d08f18a | Kostas Papadimitriou | test, toJSON, toString, valueOf
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156 | 8d08f18a | Kostas Papadimitriou | */
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157 | 8d08f18a | Kostas Papadimitriou | |
158 | 8d08f18a | Kostas Papadimitriou | |
159 | 8d08f18a | Kostas Papadimitriou | // Create a JSON object only if one does not already exist. We create the
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160 | 8d08f18a | Kostas Papadimitriou | // methods in a closure to avoid creating global variables.
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161 | 8d08f18a | Kostas Papadimitriou | |
162 | 8d08f18a | Kostas Papadimitriou | var JSON;
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163 | 8d08f18a | Kostas Papadimitriou | if (!JSON) {
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164 | 8d08f18a | Kostas Papadimitriou | JSON = {}; |
165 | 8d08f18a | Kostas Papadimitriou | } |
166 | 8d08f18a | Kostas Papadimitriou | |
167 | 8d08f18a | Kostas Papadimitriou | (function () {
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168 | 8d08f18a | Kostas Papadimitriou | "use strict";
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169 | 8d08f18a | Kostas Papadimitriou | |
170 | 8d08f18a | Kostas Papadimitriou | function f(n) { |
171 | 8d08f18a | Kostas Papadimitriou | // Format integers to have at least two digits.
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172 | 8d08f18a | Kostas Papadimitriou | return n < 10 ? '0' + n : n; |
173 | 8d08f18a | Kostas Papadimitriou | } |
174 | 8d08f18a | Kostas Papadimitriou | |
175 | 8d08f18a | Kostas Papadimitriou | if (typeof Date.prototype.toJSON !== 'function') { |
176 | 8d08f18a | Kostas Papadimitriou | |
177 | 8d08f18a | Kostas Papadimitriou | Date.prototype.toJSON = function (key) { |
178 | 8d08f18a | Kostas Papadimitriou | |
179 | 8d08f18a | Kostas Papadimitriou | return isFinite(this.valueOf()) ? |
180 | 8d08f18a | Kostas Papadimitriou | this.getUTCFullYear() + '-' + |
181 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCMonth() + 1) + '-' + |
182 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCDate()) + 'T' + |
183 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCHours()) + ':' + |
184 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCMinutes()) + ':' + |
185 | 8d08f18a | Kostas Papadimitriou | f(this.getUTCSeconds()) + 'Z' : null; |
186 | 8d08f18a | Kostas Papadimitriou | }; |
187 | 8d08f18a | Kostas Papadimitriou | |
188 | 8d08f18a | Kostas Papadimitriou | String.prototype.toJSON = |
189 | 8d08f18a | Kostas Papadimitriou | Number.prototype.toJSON = |
190 | 8d08f18a | Kostas Papadimitriou | Boolean.prototype.toJSON = function (key) { |
191 | 8d08f18a | Kostas Papadimitriou | return this.valueOf(); |
192 | 8d08f18a | Kostas Papadimitriou | }; |
193 | 8d08f18a | Kostas Papadimitriou | } |
194 | 8d08f18a | Kostas Papadimitriou | |
195 | 8d08f18a | Kostas Papadimitriou | var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, |
196 | 8d08f18a | Kostas Papadimitriou | escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
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197 | 8d08f18a | Kostas Papadimitriou | gap, |
198 | 8d08f18a | Kostas Papadimitriou | indent, |
199 | 8d08f18a | Kostas Papadimitriou | meta = { // table of character substitutions
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200 | 8d08f18a | Kostas Papadimitriou | '\b': '\\b', |
201 | 8d08f18a | Kostas Papadimitriou | '\t': '\\t', |
202 | 8d08f18a | Kostas Papadimitriou | '\n': '\\n', |
203 | 8d08f18a | Kostas Papadimitriou | '\f': '\\f', |
204 | 8d08f18a | Kostas Papadimitriou | '\r': '\\r', |
205 | 8d08f18a | Kostas Papadimitriou | '"' : '\\"', |
206 | 8d08f18a | Kostas Papadimitriou | '\\': '\\\\' |
207 | 8d08f18a | Kostas Papadimitriou | }, |
208 | 8d08f18a | Kostas Papadimitriou | rep; |
209 | 8d08f18a | Kostas Papadimitriou | |
210 | 8d08f18a | Kostas Papadimitriou | |
211 | 8d08f18a | Kostas Papadimitriou | function quote(string) { |
212 | 8d08f18a | Kostas Papadimitriou | |
213 | 8d08f18a | Kostas Papadimitriou | // If the string contains no control characters, no quote characters, and no
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214 | 8d08f18a | Kostas Papadimitriou | // backslash characters, then we can safely slap some quotes around it.
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215 | 8d08f18a | Kostas Papadimitriou | // Otherwise we must also replace the offending characters with safe escape
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216 | 8d08f18a | Kostas Papadimitriou | // sequences.
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217 | 8d08f18a | Kostas Papadimitriou | |
218 | 8d08f18a | Kostas Papadimitriou | escapable.lastIndex = 0;
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219 | 8d08f18a | Kostas Papadimitriou | return escapable.test(string) ? '"' + string.replace(escapable, function (a) { |
220 | 8d08f18a | Kostas Papadimitriou | var c = meta[a];
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221 | 8d08f18a | Kostas Papadimitriou | return typeof c === 'string' ? c : |
222 | 8d08f18a | Kostas Papadimitriou | '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); |
223 | 8d08f18a | Kostas Papadimitriou | }) + '"' : '"' + string + '"'; |
224 | 8d08f18a | Kostas Papadimitriou | } |
225 | 8d08f18a | Kostas Papadimitriou | |
226 | 8d08f18a | Kostas Papadimitriou | |
227 | 8d08f18a | Kostas Papadimitriou | function str(key, holder) { |
228 | 8d08f18a | Kostas Papadimitriou | |
229 | 8d08f18a | Kostas Papadimitriou | // Produce a string from holder[key].
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230 | 8d08f18a | Kostas Papadimitriou | |
231 | 8d08f18a | Kostas Papadimitriou | var i, // The loop counter. |
232 | 8d08f18a | Kostas Papadimitriou | k, // The member key.
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233 | 8d08f18a | Kostas Papadimitriou | v, // The member value.
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234 | 8d08f18a | Kostas Papadimitriou | length, |
235 | 8d08f18a | Kostas Papadimitriou | mind = gap, |
236 | 8d08f18a | Kostas Papadimitriou | partial, |
237 | 8d08f18a | Kostas Papadimitriou | value = holder[key]; |
238 | 8d08f18a | Kostas Papadimitriou | |
239 | 8d08f18a | Kostas Papadimitriou | // If the value has a toJSON method, call it to obtain a replacement value.
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240 | 8d08f18a | Kostas Papadimitriou | |
241 | 8d08f18a | Kostas Papadimitriou | if (value && typeof value === 'object' && |
242 | 8d08f18a | Kostas Papadimitriou | typeof value.toJSON === 'function') { |
243 | 8d08f18a | Kostas Papadimitriou | value = value.toJSON(key); |
244 | 8d08f18a | Kostas Papadimitriou | } |
245 | 8d08f18a | Kostas Papadimitriou | |
246 | 8d08f18a | Kostas Papadimitriou | // If we were called with a replacer function, then call the replacer to
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247 | 8d08f18a | Kostas Papadimitriou | // obtain a replacement value.
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248 | 8d08f18a | Kostas Papadimitriou | |
249 | 8d08f18a | Kostas Papadimitriou | if (typeof rep === 'function') { |
250 | 8d08f18a | Kostas Papadimitriou | value = rep.call(holder, key, value); |
251 | 8d08f18a | Kostas Papadimitriou | } |
252 | 8d08f18a | Kostas Papadimitriou | |
253 | 8d08f18a | Kostas Papadimitriou | // What happens next depends on the value's type.
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254 | 8d08f18a | Kostas Papadimitriou | |
255 | 8d08f18a | Kostas Papadimitriou | switch (typeof value) { |
256 | 8d08f18a | Kostas Papadimitriou | case 'string': |
257 | 8d08f18a | Kostas Papadimitriou | return quote(value);
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258 | 8d08f18a | Kostas Papadimitriou | |
259 | 8d08f18a | Kostas Papadimitriou | case 'number': |
260 | 8d08f18a | Kostas Papadimitriou | |
261 | 8d08f18a | Kostas Papadimitriou | // JSON numbers must be finite. Encode non-finite numbers as null.
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262 | 8d08f18a | Kostas Papadimitriou | |
263 | 8d08f18a | Kostas Papadimitriou | return isFinite(value) ? String(value) : 'null'; |
264 | 8d08f18a | Kostas Papadimitriou | |
265 | 8d08f18a | Kostas Papadimitriou | case 'boolean': |
266 | 8d08f18a | Kostas Papadimitriou | case 'null': |
267 | 8d08f18a | Kostas Papadimitriou | |
268 | 8d08f18a | Kostas Papadimitriou | // If the value is a boolean or null, convert it to a string. Note:
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269 | 8d08f18a | Kostas Papadimitriou | // typeof null does not produce 'null'. The case is included here in
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270 | 8d08f18a | Kostas Papadimitriou | // the remote chance that this gets fixed someday.
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271 | 8d08f18a | Kostas Papadimitriou | |
272 | 8d08f18a | Kostas Papadimitriou | return String(value);
|
273 | 8d08f18a | Kostas Papadimitriou | |
274 | 8d08f18a | Kostas Papadimitriou | // If the type is 'object', we might be dealing with an object or an array or
|
275 | 8d08f18a | Kostas Papadimitriou | // null.
|
276 | 8d08f18a | Kostas Papadimitriou | |
277 | 8d08f18a | Kostas Papadimitriou | case 'object': |
278 | 8d08f18a | Kostas Papadimitriou | |
279 | 8d08f18a | Kostas Papadimitriou | // Due to a specification blunder in ECMAScript, typeof null is 'object',
|
280 | 8d08f18a | Kostas Papadimitriou | // so watch out for that case.
|
281 | 8d08f18a | Kostas Papadimitriou | |
282 | 8d08f18a | Kostas Papadimitriou | if (!value) {
|
283 | 8d08f18a | Kostas Papadimitriou | return 'null'; |
284 | 8d08f18a | Kostas Papadimitriou | } |
285 | 8d08f18a | Kostas Papadimitriou | |
286 | 8d08f18a | Kostas Papadimitriou | // Make an array to hold the partial results of stringifying this object value.
|
287 | 8d08f18a | Kostas Papadimitriou | |
288 | 8d08f18a | Kostas Papadimitriou | gap += indent; |
289 | 8d08f18a | Kostas Papadimitriou | partial = []; |
290 | 8d08f18a | Kostas Papadimitriou | |
291 | 8d08f18a | Kostas Papadimitriou | // Is the value an array?
|
292 | 8d08f18a | Kostas Papadimitriou | |
293 | 8d08f18a | Kostas Papadimitriou | if (Object.prototype.toString.apply(value) === '[object Array]') { |
294 | 8d08f18a | Kostas Papadimitriou | |
295 | 8d08f18a | Kostas Papadimitriou | // The value is an array. Stringify every element. Use null as a placeholder
|
296 | 8d08f18a | Kostas Papadimitriou | // for non-JSON values.
|
297 | 8d08f18a | Kostas Papadimitriou | |
298 | 8d08f18a | Kostas Papadimitriou | length = value.length; |
299 | 8d08f18a | Kostas Papadimitriou | for (i = 0; i < length; i += 1) { |
300 | 8d08f18a | Kostas Papadimitriou | partial[i] = str(i, value) || 'null';
|
301 | 8d08f18a | Kostas Papadimitriou | } |
302 | 8d08f18a | Kostas Papadimitriou | |
303 | 8d08f18a | Kostas Papadimitriou | // Join all of the elements together, separated with commas, and wrap them in
|
304 | 8d08f18a | Kostas Papadimitriou | // brackets.
|
305 | 8d08f18a | Kostas Papadimitriou | |
306 | 8d08f18a | Kostas Papadimitriou | v = partial.length === 0 ? '[]' : gap ? |
307 | 8d08f18a | Kostas Papadimitriou | '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' : |
308 | 8d08f18a | Kostas Papadimitriou | '[' + partial.join(',') + ']'; |
309 | 8d08f18a | Kostas Papadimitriou | gap = mind; |
310 | 8d08f18a | Kostas Papadimitriou | return v;
|
311 | 8d08f18a | Kostas Papadimitriou | } |
312 | 8d08f18a | Kostas Papadimitriou | |
313 | 8d08f18a | Kostas Papadimitriou | // If the replacer is an array, use it to select the members to be stringified.
|
314 | 8d08f18a | Kostas Papadimitriou | |
315 | 8d08f18a | Kostas Papadimitriou | if (rep && typeof rep === 'object') { |
316 | 8d08f18a | Kostas Papadimitriou | length = rep.length; |
317 | 8d08f18a | Kostas Papadimitriou | for (i = 0; i < length; i += 1) { |
318 | 8d08f18a | Kostas Papadimitriou | if (typeof rep[i] === 'string') { |
319 | 8d08f18a | Kostas Papadimitriou | k = rep[i]; |
320 | 8d08f18a | Kostas Papadimitriou | v = str(k, value); |
321 | 8d08f18a | Kostas Papadimitriou | if (v) {
|
322 | 8d08f18a | Kostas Papadimitriou | partial.push(quote(k) + (gap ? ': ' : ':') + v); |
323 | 8d08f18a | Kostas Papadimitriou | } |
324 | 8d08f18a | Kostas Papadimitriou | } |
325 | 8d08f18a | Kostas Papadimitriou | } |
326 | 8d08f18a | Kostas Papadimitriou | } else {
|
327 | 8d08f18a | Kostas Papadimitriou | |
328 | 8d08f18a | Kostas Papadimitriou | // Otherwise, iterate through all of the keys in the object.
|
329 | 8d08f18a | Kostas Papadimitriou | |
330 | 8d08f18a | Kostas Papadimitriou | for (k in value) { |
331 | 8d08f18a | Kostas Papadimitriou | if (Object.prototype.hasOwnProperty.call(value, k)) {
|
332 | 8d08f18a | Kostas Papadimitriou | v = str(k, value); |
333 | 8d08f18a | Kostas Papadimitriou | if (v) {
|
334 | 8d08f18a | Kostas Papadimitriou | partial.push(quote(k) + (gap ? ': ' : ':') + v); |
335 | 8d08f18a | Kostas Papadimitriou | } |
336 | 8d08f18a | Kostas Papadimitriou | } |
337 | 8d08f18a | Kostas Papadimitriou | } |
338 | 8d08f18a | Kostas Papadimitriou | } |
339 | 8d08f18a | Kostas Papadimitriou | |
340 | 8d08f18a | Kostas Papadimitriou | // Join all of the member texts together, separated with commas,
|
341 | 8d08f18a | Kostas Papadimitriou | // and wrap them in braces.
|
342 | 8d08f18a | Kostas Papadimitriou | |
343 | 8d08f18a | Kostas Papadimitriou | v = partial.length === 0 ? '{}' : gap ? |
344 | 8d08f18a | Kostas Papadimitriou | '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' : |
345 | 8d08f18a | Kostas Papadimitriou | '{' + partial.join(',') + '}'; |
346 | 8d08f18a | Kostas Papadimitriou | gap = mind; |
347 | 8d08f18a | Kostas Papadimitriou | return v;
|
348 | 8d08f18a | Kostas Papadimitriou | } |
349 | 8d08f18a | Kostas Papadimitriou | } |
350 | 8d08f18a | Kostas Papadimitriou | |
351 | 8d08f18a | Kostas Papadimitriou | // If the JSON object does not yet have a stringify method, give it one.
|
352 | 8d08f18a | Kostas Papadimitriou | |
353 | 8d08f18a | Kostas Papadimitriou | if (typeof JSON.stringify !== 'function') { |
354 | 8d08f18a | Kostas Papadimitriou | JSON.stringify = function (value, replacer, space) { |
355 | 8d08f18a | Kostas Papadimitriou | |
356 | 8d08f18a | Kostas Papadimitriou | // The stringify method takes a value and an optional replacer, and an optional
|
357 | 8d08f18a | Kostas Papadimitriou | // space parameter, and returns a JSON text. The replacer can be a function
|
358 | 8d08f18a | Kostas Papadimitriou | // that can replace values, or an array of strings that will select the keys.
|
359 | 8d08f18a | Kostas Papadimitriou | // A default replacer method can be provided. Use of the space parameter can
|
360 | 8d08f18a | Kostas Papadimitriou | // produce text that is more easily readable.
|
361 | 8d08f18a | Kostas Papadimitriou | |
362 | 8d08f18a | Kostas Papadimitriou | var i;
|
363 | 8d08f18a | Kostas Papadimitriou | gap = '';
|
364 | 8d08f18a | Kostas Papadimitriou | indent = '';
|
365 | 8d08f18a | Kostas Papadimitriou | |
366 | 8d08f18a | Kostas Papadimitriou | // If the space parameter is a number, make an indent string containing that
|
367 | 8d08f18a | Kostas Papadimitriou | // many spaces.
|
368 | 8d08f18a | Kostas Papadimitriou | |
369 | 8d08f18a | Kostas Papadimitriou | if (typeof space === 'number') { |
370 | 8d08f18a | Kostas Papadimitriou | for (i = 0; i < space; i += 1) { |
371 | 8d08f18a | Kostas Papadimitriou | indent += ' ';
|
372 | 8d08f18a | Kostas Papadimitriou | } |
373 | 8d08f18a | Kostas Papadimitriou | |
374 | 8d08f18a | Kostas Papadimitriou | // If the space parameter is a string, it will be used as the indent string.
|
375 | 8d08f18a | Kostas Papadimitriou | |
376 | 8d08f18a | Kostas Papadimitriou | } else if (typeof space === 'string') { |
377 | 8d08f18a | Kostas Papadimitriou | indent = space; |
378 | 8d08f18a | Kostas Papadimitriou | } |
379 | 8d08f18a | Kostas Papadimitriou | |
380 | 8d08f18a | Kostas Papadimitriou | // If there is a replacer, it must be a function or an array.
|
381 | 8d08f18a | Kostas Papadimitriou | // Otherwise, throw an error.
|
382 | 8d08f18a | Kostas Papadimitriou | |
383 | 8d08f18a | Kostas Papadimitriou | rep = replacer; |
384 | 8d08f18a | Kostas Papadimitriou | if (replacer && typeof replacer !== 'function' && |
385 | 8d08f18a | Kostas Papadimitriou | (typeof replacer !== 'object' || |
386 | 8d08f18a | Kostas Papadimitriou | typeof replacer.length !== 'number')) { |
387 | 8d08f18a | Kostas Papadimitriou | throw new Error('JSON.stringify'); |
388 | 8d08f18a | Kostas Papadimitriou | } |
389 | 8d08f18a | Kostas Papadimitriou | |
390 | 8d08f18a | Kostas Papadimitriou | // Make a fake root object containing our value under the key of ''.
|
391 | 8d08f18a | Kostas Papadimitriou | // Return the result of stringifying the value.
|
392 | 8d08f18a | Kostas Papadimitriou | |
393 | 8d08f18a | Kostas Papadimitriou | return str('', {'': value}); |
394 | 8d08f18a | Kostas Papadimitriou | }; |
395 | 8d08f18a | Kostas Papadimitriou | } |
396 | 8d08f18a | Kostas Papadimitriou | |
397 | 8d08f18a | Kostas Papadimitriou | |
398 | 8d08f18a | Kostas Papadimitriou | // If the JSON object does not yet have a parse method, give it one.
|
399 | 8d08f18a | Kostas Papadimitriou | |
400 | 8d08f18a | Kostas Papadimitriou | if (typeof JSON.parse !== 'function') { |
401 | 8d08f18a | Kostas Papadimitriou | JSON.parse = function (text, reviver) { |
402 | 8d08f18a | Kostas Papadimitriou | |
403 | 8d08f18a | Kostas Papadimitriou | // The parse method takes a text and an optional reviver function, and returns
|
404 | 8d08f18a | Kostas Papadimitriou | // a JavaScript value if the text is a valid JSON text.
|
405 | 8d08f18a | Kostas Papadimitriou | |
406 | 8d08f18a | Kostas Papadimitriou | var j;
|
407 | 8d08f18a | Kostas Papadimitriou | |
408 | 8d08f18a | Kostas Papadimitriou | function walk(holder, key) { |
409 | 8d08f18a | Kostas Papadimitriou | |
410 | 8d08f18a | Kostas Papadimitriou | // The walk method is used to recursively walk the resulting structure so
|
411 | 8d08f18a | Kostas Papadimitriou | // that modifications can be made.
|
412 | 8d08f18a | Kostas Papadimitriou | |
413 | 8d08f18a | Kostas Papadimitriou | var k, v, value = holder[key];
|
414 | 8d08f18a | Kostas Papadimitriou | if (value && typeof value === 'object') { |
415 | 8d08f18a | Kostas Papadimitriou | for (k in value) { |
416 | 8d08f18a | Kostas Papadimitriou | if (Object.prototype.hasOwnProperty.call(value, k)) {
|
417 | 8d08f18a | Kostas Papadimitriou | v = walk(value, k); |
418 | 8d08f18a | Kostas Papadimitriou | if (v !== undefined) { |
419 | 8d08f18a | Kostas Papadimitriou | value[k] = v; |
420 | 8d08f18a | Kostas Papadimitriou | } else {
|
421 | 8d08f18a | Kostas Papadimitriou | delete value[k];
|
422 | 8d08f18a | Kostas Papadimitriou | } |
423 | 8d08f18a | Kostas Papadimitriou | } |
424 | 8d08f18a | Kostas Papadimitriou | } |
425 | 8d08f18a | Kostas Papadimitriou | } |
426 | 8d08f18a | Kostas Papadimitriou | return reviver.call(holder, key, value);
|
427 | 8d08f18a | Kostas Papadimitriou | } |
428 | 8d08f18a | Kostas Papadimitriou | |
429 | 8d08f18a | Kostas Papadimitriou | |
430 | 8d08f18a | Kostas Papadimitriou | // Parsing happens in four stages. In the first stage, we replace certain
|
431 | 8d08f18a | Kostas Papadimitriou | // Unicode characters with escape sequences. JavaScript handles many characters
|
432 | 8d08f18a | Kostas Papadimitriou | // incorrectly, either silently deleting them, or treating them as line endings.
|
433 | 8d08f18a | Kostas Papadimitriou | |
434 | 8d08f18a | Kostas Papadimitriou | text = String(text); |
435 | 8d08f18a | Kostas Papadimitriou | cx.lastIndex = 0;
|
436 | 8d08f18a | Kostas Papadimitriou | if (cx.test(text)) {
|
437 | 8d08f18a | Kostas Papadimitriou | text = text.replace(cx, function (a) {
|
438 | 8d08f18a | Kostas Papadimitriou | return '\\u' + |
439 | 8d08f18a | Kostas Papadimitriou | ('0000' + a.charCodeAt(0).toString(16)).slice(-4); |
440 | 8d08f18a | Kostas Papadimitriou | }); |
441 | 8d08f18a | Kostas Papadimitriou | } |
442 | 8d08f18a | Kostas Papadimitriou | |
443 | 8d08f18a | Kostas Papadimitriou | // In the second stage, we run the text against regular expressions that look
|
444 | 8d08f18a | Kostas Papadimitriou | // for non-JSON patterns. We are especially concerned with '()' and 'new'
|
445 | 8d08f18a | Kostas Papadimitriou | // because they can cause invocation, and '=' because it can cause mutation.
|
446 | 8d08f18a | Kostas Papadimitriou | // But just to be safe, we want to reject all unexpected forms.
|
447 | 8d08f18a | Kostas Papadimitriou | |
448 | 8d08f18a | Kostas Papadimitriou | // We split the second stage into 4 regexp operations in order to work around
|
449 | 8d08f18a | Kostas Papadimitriou | // crippling inefficiencies in IE's and Safari's regexp engines. First we
|
450 | 8d08f18a | Kostas Papadimitriou | // replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
|
451 | 8d08f18a | Kostas Papadimitriou | // replace all simple value tokens with ']' characters. Third, we delete all
|
452 | 8d08f18a | Kostas Papadimitriou | // open brackets that follow a colon or comma or that begin the text. Finally,
|
453 | 8d08f18a | Kostas Papadimitriou | // we look to see that the remaining characters are only whitespace or ']' or
|
454 | 8d08f18a | Kostas Papadimitriou | // ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
|
455 | 8d08f18a | Kostas Papadimitriou | |
456 | 8d08f18a | Kostas Papadimitriou | if (/^[\],:{}\s]*$/ |
457 | 8d08f18a | Kostas Papadimitriou | .test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@') |
458 | 8d08f18a | Kostas Papadimitriou | .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']') |
459 | 8d08f18a | Kostas Papadimitriou | .replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { |
460 | 8d08f18a | Kostas Papadimitriou | |
461 | 8d08f18a | Kostas Papadimitriou | // In the third stage we use the eval function to compile the text into a
|
462 | 8d08f18a | Kostas Papadimitriou | // JavaScript structure. The '{' operator is subject to a syntactic ambiguity
|
463 | 8d08f18a | Kostas Papadimitriou | // in JavaScript: it can begin a block or an object literal. We wrap the text
|
464 | 8d08f18a | Kostas Papadimitriou | // in parens to eliminate the ambiguity.
|
465 | 8d08f18a | Kostas Papadimitriou | |
466 | 8d08f18a | Kostas Papadimitriou | j = eval('(' + text + ')'); |
467 | 8d08f18a | Kostas Papadimitriou | |
468 | 8d08f18a | Kostas Papadimitriou | // In the optional fourth stage, we recursively walk the new structure, passing
|
469 | 8d08f18a | Kostas Papadimitriou | // each name/value pair to a reviver function for possible transformation.
|
470 | 8d08f18a | Kostas Papadimitriou | |
471 | 8d08f18a | Kostas Papadimitriou | return typeof reviver === 'function' ? |
472 | 8d08f18a | Kostas Papadimitriou | walk({'': j}, '') : j; |
473 | 8d08f18a | Kostas Papadimitriou | } |
474 | 8d08f18a | Kostas Papadimitriou | |
475 | 8d08f18a | Kostas Papadimitriou | // If the text is not JSON parseable, then a SyntaxError is thrown.
|
476 | 8d08f18a | Kostas Papadimitriou | |
477 | 8d08f18a | Kostas Papadimitriou | throw new SyntaxError('JSON.parse'); |
478 | 8d08f18a | Kostas Papadimitriou | }; |
479 | 8d08f18a | Kostas Papadimitriou | } |
480 | 8d08f18a | Kostas Papadimitriou | }()); |