1 | /* |
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2 | Copyright (c) 2005 JSON.org |
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3 | |
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4 | Permission is hereby granted, free of charge, to any person obtaining a copy |
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5 | of this software and associated documentation files (the "Software"), to deal |
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6 | in the Software without restriction, including without limitation the rights |
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7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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8 | copies of the Software, and to permit persons to whom the Software is |
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9 | furnished to do so, subject to the following conditions: |
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10 | |
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11 | The Software shall be used for Good, not Evil. |
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12 | |
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13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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14 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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16 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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17 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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18 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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19 | SOFTWARE. |
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20 | */ |
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21 | |
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22 | /* |
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23 | The global object JSON contains two methods. |
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24 | |
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25 | JSON.stringify(value) takes a JavaScript value and produces a JSON text. |
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26 | The value must not be cyclical. |
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27 | |
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28 | JSON.parse(text) takes a JSON text and produces a JavaScript value. It will |
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29 | throw a 'JSONError' exception if there is an error. |
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30 | */ |
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31 | var JSON = { |
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32 | copyright: '(c)2005 JSON.org', |
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33 | license: 'http://www.crockford.com/JSON/license.html', |
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34 | /* |
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35 | Stringify a JavaScript value, producing a JSON text. |
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36 | */ |
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37 | stringify: function (v) { |
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38 | var a = []; |
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39 | |
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40 | /* |
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41 | Emit a string. |
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42 | */ |
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43 | function e(s) { |
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44 | a[a.length] = s; |
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45 | } |
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46 | |
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47 | /* |
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48 | Convert a value. |
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49 | */ |
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50 | function g(x) { |
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51 | var c, i, l, v; |
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52 | |
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53 | switch (typeof x) { |
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54 | case 'object': |
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55 | if (x) { |
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56 | if (x instanceof Array) { |
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57 | e('['); |
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58 | l = a.length; |
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59 | for (i = 0; i < x.length; i += 1) { |
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60 | v = x[i]; |
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61 | if (typeof v != 'undefined' && |
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62 | typeof v != 'function') { |
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63 | if (l < a.length) { |
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64 | e(','); |
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65 | } |
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66 | g(v); |
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67 | } |
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68 | } |
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69 | e(']'); |
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70 | return; |
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71 | } else if (typeof x.valueOf == 'function') { |
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72 | e('{'); |
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73 | l = a.length; |
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74 | for (i in x) { |
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75 | v = x[i]; |
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76 | if (typeof v != 'undefined' && |
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77 | typeof v != 'function' && |
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78 | (!v || typeof v != 'object' || |
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79 | typeof v.valueOf == 'function')) { |
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80 | if (l < a.length) { |
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81 | e(','); |
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82 | } |
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83 | g(i); |
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84 | e(':'); |
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85 | g(v); |
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86 | } |
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87 | } |
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88 | return e('}'); |
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89 | } |
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90 | } |
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91 | e('null'); |
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92 | return; |
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93 | case 'number': |
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94 | e(isFinite(x) ? +x : 'null'); |
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95 | return; |
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96 | case 'string': |
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97 | l = x.length; |
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98 | e('"'); |
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99 | for (i = 0; i < l; i += 1) { |
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100 | c = x.charAt(i); |
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101 | if (c >= ' ') { |
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102 | if (c == '\\' || c == '"') { |
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103 | e('\\'); |
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104 | } |
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105 | e(c); |
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106 | } else { |
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107 | switch (c) { |
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108 | case '\b': |
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109 | e('\\b'); |
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110 | break; |
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111 | case '\f': |
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112 | e('\\f'); |
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113 | break; |
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114 | case '\n': |
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115 | e('\\n'); |
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116 | break; |
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117 | case '\r': |
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118 | e('\\r'); |
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119 | break; |
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120 | case '\t': |
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121 | e('\\t'); |
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122 | break; |
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123 | default: |
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124 | c = c.charCodeAt(); |
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125 | e('\\u00' + Math.floor(c / 16).toString(16) + |
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126 | (c % 16).toString(16)); |
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127 | } |
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128 | } |
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129 | } |
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130 | e('"'); |
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131 | return; |
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132 | case 'boolean': |
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133 | e(String(x)); |
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134 | return; |
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135 | default: |
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136 | e('null'); |
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137 | return; |
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138 | } |
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139 | } |
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140 | g(v); |
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141 | return a.join(''); |
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142 | }, |
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143 | /* |
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144 | Parse a JSON text, producing a JavaScript value. |
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145 | */ |
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146 | parse: function (text) { |
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147 | return (/^(\s+|[,:{}\[\]]|"(\\["\\\/bfnrtu]|[^\x00-\x1f"\\]+)*"|-?\d+(\.\d*)?([eE][+-]?\d+)?|true|false|null)+$/.test(text)) && |
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148 | eval('(' + text + ')'); |
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149 | } |
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150 | }; |
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