|
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> |
|
2 <html xmlns:yui="http://yuilibrary.com/rdf/1.0/yui.rdf#"> |
|
3 <head> |
|
4 <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> |
|
5 <title>API: json json-stringify.js (YUI Library)</title> |
|
6 |
|
7 <link rel="stylesheet" type="text/css" href="assets/reset-fonts-grids-min.css" /> |
|
8 <link rel="stylesheet" type="text/css" href="assets/api.css" /> |
|
9 |
|
10 <script type="text/javascript" src="assets/api-js"></script> |
|
11 <script type="text/javascript" src="assets/ac-js"></script> |
|
12 </head> |
|
13 |
|
14 <body id="yahoo-com"> |
|
15 |
|
16 <div id="doc3" class="yui-t2"> |
|
17 <div id="hd"> |
|
18 <h1><a href="http://developer.yahoo.com/yui/" title="Yahoo! UI Library">Yahoo! UI Library</a></h1> |
|
19 <h3>json <span class="subtitle">3.0.0</span></h3> |
|
20 <a href="./index.html" title="Yahoo! UI Library">Yahoo! UI Library</a> |
|
21 > <a href="./module_json.html" title="json">json</a> |
|
22 |
|
23 > json-stringify.js (source view) |
|
24 <form onsubmit="return false"> |
|
25 <div id="propertysearch"> |
|
26 Search: <input autocomplete="off" id="searchinput" /> |
|
27 <div id="searchresults"> |
|
28 |
|
29 </div> |
|
30 </div> |
|
31 </form> |
|
32 </div> |
|
33 |
|
34 <div id="bd"> |
|
35 <div id="yui-main"> |
|
36 <div class="yui-b"> |
|
37 <form action="#" name="yui-classopts-form" method="get" id="yui-classopts-form"> |
|
38 <fieldset> |
|
39 <legend>Filters</legend> |
|
40 <span class="classopts"><input type="checkbox" name="show_private" id="show_private" /> <label for="show_private">Show Private</label></span> |
|
41 <span class="classopts"><input type="checkbox" name="show_protected" id="show_protected" /> <label for="show_protected">Show Protected</label></span> |
|
42 <span class="classopts"><input type="checkbox" name="show_deprecated" id="show_deprecated" /> <label for="show_deprecated">Show Deprecated</label></span> |
|
43 </fieldset> |
|
44 </form> |
|
45 |
|
46 <div id="srcout"> |
|
47 <style> |
|
48 #doc3 .classopts { display:none; } |
|
49 </style> |
|
50 <div class="highlight" ><pre><span class="c">/**</span> |
|
51 <span class="c"> * Provides Y.JSON.stringify method for converting objects to JSON strings.</span> |
|
52 <span class="c"> *</span> |
|
53 <span class="c"> * @module json</span> |
|
54 <span class="c"> * @submodule json-stringify</span> |
|
55 <span class="c"> * @for JSON</span> |
|
56 <span class="c"> * @static</span> |
|
57 <span class="c"> */</span> |
|
58 <span class="k">var</span> <span class="nx">_JSON</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">config</span><span class="o">.</span><span class="nx">win</span><span class="o">.</span><span class="nx">JSON</span><span class="o">,</span> |
|
59 <span class="nx">Lang</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Lang</span><span class="o">,</span> |
|
60 <span class="nx">isFunction</span><span class="o">=</span> <span class="nx">Lang</span><span class="o">.</span><span class="nx">isFunction</span><span class="o">,</span> |
|
61 <span class="nx">isObject</span> <span class="o">=</span> <span class="nx">Lang</span><span class="o">.</span><span class="nx">isObject</span><span class="o">,</span> |
|
62 <span class="nx">isArray</span> <span class="o">=</span> <span class="nx">Lang</span><span class="o">.</span><span class="nx">isArray</span><span class="o">,</span> |
|
63 <span class="nx">_toStr</span> <span class="o">=</span> <span class="nb">Object</span><span class="o">.</span><span class="nx">prototype</span><span class="o">.</span><span class="nx">toString</span><span class="o">,</span> |
|
64 <span class="nx">Native</span> <span class="o">=</span> <span class="o">(</span><span class="nx">_toStr</span><span class="o">.</span><span class="nx">call</span><span class="o">(</span><span class="nx">_JSON</span><span class="o">)</span> <span class="o">===</span> <span class="s1">'[object JSON]'</span> <span class="o">&&</span> <span class="nx">_JSON</span><span class="o">),</span> |
|
65 <span class="nx">UNDEFINED</span> <span class="o">=</span> <span class="s1">'undefined'</span><span class="o">,</span> |
|
66 <span class="nx">OBJECT</span> <span class="o">=</span> <span class="s1">'object'</span><span class="o">,</span> |
|
67 <span class="nx">NULL</span> <span class="o">=</span> <span class="s1">'null'</span><span class="o">,</span> |
|
68 <span class="nx">STRING</span> <span class="o">=</span> <span class="s1">'string'</span><span class="o">,</span> |
|
69 <span class="nx">NUMBER</span> <span class="o">=</span> <span class="s1">'number'</span><span class="o">,</span> |
|
70 <span class="nx">BOOLEAN</span> <span class="o">=</span> <span class="s1">'boolean'</span><span class="o">,</span> |
|
71 <span class="nx">DATE</span> <span class="o">=</span> <span class="s1">'date'</span><span class="o">,</span> |
|
72 <span class="nx">_allowable</span><span class="o">=</span> <span class="o">{</span> |
|
73 <span class="s1">'undefined'</span> <span class="o">:</span> <span class="nx">UNDEFINED</span><span class="o">,</span> |
|
74 <span class="s1">'string'</span> <span class="o">:</span> <span class="nx">STRING</span><span class="o">,</span> |
|
75 <span class="s1">'[object String]'</span> <span class="o">:</span> <span class="nx">STRING</span><span class="o">,</span> |
|
76 <span class="s1">'number'</span> <span class="o">:</span> <span class="nx">NUMBER</span><span class="o">,</span> |
|
77 <span class="s1">'[object Number]'</span> <span class="o">:</span> <span class="nx">NUMBER</span><span class="o">,</span> |
|
78 <span class="s1">'boolean'</span> <span class="o">:</span> <span class="nx">BOOLEAN</span><span class="o">,</span> |
|
79 <span class="s1">'[object Boolean]'</span> <span class="o">:</span> <span class="nx">BOOLEAN</span><span class="o">,</span> |
|
80 <span class="s1">'[object Date]'</span> <span class="o">:</span> <span class="nx">DATE</span><span class="o">,</span> |
|
81 <span class="s1">'[object RegExp]'</span> <span class="o">:</span> <span class="nx">OBJECT</span> |
|
82 <span class="o">},</span> |
|
83 <span class="nx">EMPTY</span> <span class="o">=</span> <span class="s1">''</span><span class="o">,</span> |
|
84 <span class="nx">OPEN_O</span> <span class="o">=</span> <span class="s1">'{'</span><span class="o">,</span> |
|
85 <span class="nx">CLOSE_O</span> <span class="o">=</span> <span class="s1">'}'</span><span class="o">,</span> |
|
86 <span class="nx">OPEN_A</span> <span class="o">=</span> <span class="s1">'['</span><span class="o">,</span> |
|
87 <span class="nx">CLOSE_A</span> <span class="o">=</span> <span class="s1">']'</span><span class="o">,</span> |
|
88 <span class="nx">COMMA</span> <span class="o">=</span> <span class="s1">','</span><span class="o">,</span> |
|
89 <span class="nx">COMMA_CR</span> <span class="o">=</span> <span class="s2">",\n"</span><span class="o">,</span> |
|
90 <span class="nx">CR</span> <span class="o">=</span> <span class="s2">"\n"</span><span class="o">,</span> |
|
91 <span class="nx">COLON</span> <span class="o">=</span> <span class="s1">':'</span><span class="o">,</span> |
|
92 <span class="nx">COLON_SP</span> <span class="o">=</span> <span class="s1">': '</span><span class="o">,</span> |
|
93 <span class="nx">QUOTE</span> <span class="o">=</span> <span class="s1">'"'</span><span class="o">,</span> |
|
94 <span class="c">// Regex used to capture characters that need escaping before enclosing</span> |
|
95 <span class="c"></span> <span class="c">// their containing string in quotes.</span> |
|
96 <span class="c"></span> <span class="nx">_SPECIAL_CHARS</span> <span class="o">=</span> <span class="sr">/[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g</span><span class="o">,</span> |
|
97 <span class="c">// Character substitution map for common escapes and special characters.</span> |
|
98 <span class="c"></span> <span class="nx">_CHARS</span> <span class="o">=</span> <span class="o">{</span> |
|
99 <span class="s1">'\b'</span><span class="o">:</span> <span class="s1">'\\b'</span><span class="o">,</span> |
|
100 <span class="s1">'\t'</span><span class="o">:</span> <span class="s1">'\\t'</span><span class="o">,</span> |
|
101 <span class="s1">'\n'</span><span class="o">:</span> <span class="s1">'\\n'</span><span class="o">,</span> |
|
102 <span class="s1">'\f'</span><span class="o">:</span> <span class="s1">'\\f'</span><span class="o">,</span> |
|
103 <span class="s1">'\r'</span><span class="o">:</span> <span class="s1">'\\r'</span><span class="o">,</span> |
|
104 <span class="s1">'"'</span> <span class="o">:</span> <span class="s1">'\\"'</span><span class="o">,</span> |
|
105 <span class="s1">'\\'</span><span class="o">:</span> <span class="s1">'\\\\'</span> |
|
106 <span class="o">};</span> |
|
107 |
|
108 |
|
109 <span class="c">// Utility function used to determine how to serialize a variable.</span> |
|
110 <span class="c"></span><span class="k">function</span> <span class="nx">_type</span><span class="o">(</span><span class="nx">o</span><span class="o">)</span> <span class="o">{</span> |
|
111 <span class="k">var</span> <span class="nx">t</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">o</span><span class="o">;</span> |
|
112 <span class="k">return</span> <span class="nx">_allowable</span><span class="o">[</span><span class="nx">t</span><span class="o">]</span> <span class="o">||</span> <span class="c">// number, string, boolean, undefined</span> |
|
113 <span class="c"></span> <span class="nx">_allowable</span><span class="o">[</span><span class="nx">_toStr</span><span class="o">.</span><span class="nx">call</span><span class="o">(</span><span class="nx">o</span><span class="o">)]</span> <span class="o">||</span> <span class="c">// Number, String, Boolean, Date</span> |
|
114 <span class="c"></span> <span class="o">(</span><span class="nx">t</span> <span class="o">===</span> <span class="nx">OBJECT</span> <span class="o">?</span> |
|
115 <span class="o">(</span><span class="nx">o</span> <span class="o">?</span> <span class="nx">OBJECT</span> <span class="o">:</span> <span class="nx">NULL</span><span class="o">)</span> <span class="o">:</span> <span class="c">// object, array, null, misc natives</span> |
|
116 <span class="c"></span> <span class="nx">UNDEFINED</span><span class="o">);</span> <span class="c">// function, unknown</span> |
|
117 <span class="c"></span><span class="o">}</span> |
|
118 |
|
119 <span class="c">// Escapes a special character to a safe Unicode representation</span> |
|
120 <span class="c"></span><span class="k">function</span> <span class="nx">_char</span><span class="o">(</span><span class="nx">c</span><span class="o">)</span> <span class="o">{</span> |
|
121 <span class="k">if</span> <span class="o">(!</span><span class="nx">_CHARS</span><span class="o">[</span><span class="nx">c</span><span class="o">])</span> <span class="o">{</span> |
|
122 <span class="nx">_CHARS</span><span class="o">[</span><span class="nx">c</span><span class="o">]</span> <span class="o">=</span> <span class="s1">'\\u'</span><span class="o">+(</span><span class="s1">'0000'</span><span class="o">+(+(</span><span class="nx">c</span><span class="o">.</span><span class="nx">charCodeAt</span><span class="o">(</span><span class="m">0</span><span class="o">))).</span><span class="nx">toString</span><span class="o">(</span><span class="m">16</span><span class="o">)).</span><span class="nx">slice</span><span class="o">(-</span><span class="m">4</span><span class="o">);</span> |
|
123 <span class="o">}</span> |
|
124 <span class="k">return</span> <span class="nx">_CHARS</span><span class="o">[</span><span class="nx">c</span><span class="o">];</span> |
|
125 <span class="o">}</span> |
|
126 |
|
127 <span class="c">// Enclose escaped strings in quotes</span> |
|
128 <span class="c"></span><span class="k">function</span> <span class="nx">_string</span><span class="o">(</span><span class="nx">s</span><span class="o">)</span> <span class="o">{</span> |
|
129 <span class="k">return</span> <span class="nx">QUOTE</span> <span class="o">+</span> <span class="nx">s</span><span class="o">.</span><span class="nx">replace</span><span class="o">(</span><span class="nx">_SPECIAL_CHARS</span><span class="o">,</span> <span class="nx">_char</span><span class="o">)</span> <span class="o">+</span> <span class="nx">QUOTE</span><span class="o">;</span> |
|
130 <span class="o">}</span> |
|
131 |
|
132 <span class="c">// Adds the provided space to the beginning of every line in the input string</span> |
|
133 <span class="c"></span><span class="k">function</span> <span class="nx">_indent</span><span class="o">(</span><span class="nx">s</span><span class="o">,</span><span class="nx">space</span><span class="o">)</span> <span class="o">{</span> |
|
134 <span class="k">return</span> <span class="nx">s</span><span class="o">.</span><span class="nx">replace</span><span class="o">(</span><span class="sr">/^/gm</span><span class="o">,</span> <span class="nx">space</span><span class="o">);</span> |
|
135 <span class="o">}</span> |
|
136 |
|
137 <span class="c">// JavaScript implementation of stringify (see API declaration of stringify)</span> |
|
138 <span class="c"></span><span class="k">function</span> <span class="nx">_stringify</span><span class="o">(</span><span class="nx">o</span><span class="o">,</span><span class="nx">w</span><span class="o">,</span><span class="nx">space</span><span class="o">)</span> <span class="o">{</span> |
|
139 <span class="k">if</span> <span class="o">(</span><span class="nx">o</span> <span class="o">===</span> <span class="kc">undefined</span><span class="o">)</span> <span class="o">{</span> |
|
140 <span class="k">return</span> <span class="kc">undefined</span><span class="o">;</span> |
|
141 <span class="o">}</span> |
|
142 |
|
143 <span class="k">var</span> <span class="nx">replacer</span> <span class="o">=</span> <span class="nx">isFunction</span><span class="o">(</span><span class="nx">w</span><span class="o">)</span> <span class="o">?</span> <span class="nx">w</span> <span class="o">:</span> <span class="kc">null</span><span class="o">,</span> |
|
144 <span class="nx">format</span> <span class="o">=</span> <span class="nx">_toStr</span><span class="o">.</span><span class="nx">call</span><span class="o">(</span><span class="nx">space</span><span class="o">).</span><span class="nx">match</span><span class="o">(</span><span class="sr">/String|Number/</span><span class="o">)</span> <span class="o">||</span> <span class="o">[],</span> |
|
145 <span class="nx">_date</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">JSON</span><span class="o">.</span><span class="nx">dateToString</span><span class="o">,</span> |
|
146 <span class="nx">stack</span> <span class="o">=</span> <span class="o">[],</span> |
|
147 <span class="nx">tmp</span><span class="o">,</span><span class="nx">i</span><span class="o">,</span><span class="nx">len</span><span class="o">;</span> |
|
148 |
|
149 <span class="k">if</span> <span class="o">(</span><span class="nx">replacer</span> <span class="o">||</span> <span class="o">!</span><span class="nx">isArray</span><span class="o">(</span><span class="nx">w</span><span class="o">))</span> <span class="o">{</span> |
|
150 <span class="nx">w</span> <span class="o">=</span> <span class="kc">undefined</span><span class="o">;</span> |
|
151 <span class="o">}</span> |
|
152 |
|
153 <span class="c">// Ensure whitelist keys are unique (bug 2110391)</span> |
|
154 <span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">w</span><span class="o">)</span> <span class="o">{</span> |
|
155 <span class="nx">tmp</span> <span class="o">=</span> <span class="o">{};</span> |
|
156 <span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="m">0</span><span class="o">,</span> <span class="nx">len</span> <span class="o">=</span> <span class="nx">w</span><span class="o">.</span><span class="nx">length</span><span class="o">;</span> <span class="nx">i</span> <span class="o"><</span> <span class="nx">len</span><span class="o">;</span> <span class="o">++</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span> |
|
157 <span class="nx">tmp</span><span class="o">[</span><span class="nx">w</span><span class="o">[</span><span class="nx">i</span><span class="o">]]</span> <span class="o">=</span> <span class="kc">true</span><span class="o">;</span> |
|
158 <span class="o">}</span> |
|
159 <span class="nx">w</span> <span class="o">=</span> <span class="nx">tmp</span><span class="o">;</span> |
|
160 <span class="o">}</span> |
|
161 |
|
162 <span class="c">// Per the spec, strings are truncated to 10 characters and numbers</span> |
|
163 <span class="c"></span> <span class="c">// are converted to that number of spaces (max 10)</span> |
|
164 <span class="c"></span> <span class="nx">space</span> <span class="o">=</span> <span class="nx">format</span><span class="o">[</span><span class="m">0</span><span class="o">]</span> <span class="o">===</span> <span class="s1">'Number'</span> <span class="o">?</span> |
|
165 <span class="k">new</span> <span class="nb">Array</span><span class="o">(</span><span class="nb">Math</span><span class="o">.</span><span class="nx">min</span><span class="o">(</span><span class="nb">Math</span><span class="o">.</span><span class="nx">max</span><span class="o">(</span><span class="m">0</span><span class="o">,</span><span class="nx">space</span><span class="o">),</span><span class="m">10</span><span class="o">)+</span><span class="m">1</span><span class="o">).</span><span class="nx">join</span><span class="o">(</span><span class="s2">" "</span><span class="o">)</span> <span class="o">:</span> |
|
166 <span class="o">(</span><span class="nx">space</span> <span class="o">||</span> <span class="nx">EMPTY</span><span class="o">).</span><span class="nx">slice</span><span class="o">(</span><span class="m">0</span><span class="o">,</span><span class="m">10</span><span class="o">);</span> |
|
167 |
|
168 <span class="k">function</span> <span class="nx">_serialize</span><span class="o">(</span><span class="nx">h</span><span class="o">,</span><span class="nx">key</span><span class="o">)</span> <span class="o">{</span> |
|
169 <span class="k">var</span> <span class="nx">value</span> <span class="o">=</span> <span class="nx">h</span><span class="o">[</span><span class="nx">key</span><span class="o">],</span> |
|
170 <span class="nx">t</span> <span class="o">=</span> <span class="nx">_type</span><span class="o">(</span><span class="nx">value</span><span class="o">),</span> |
|
171 <span class="nx">a</span> <span class="o">=</span> <span class="o">[],</span> |
|
172 <span class="nx">colon</span> <span class="o">=</span> <span class="nx">space</span> <span class="o">?</span> <span class="nx">COLON_SP</span> <span class="o">:</span> <span class="nx">COLON</span><span class="o">,</span> |
|
173 <span class="nx">arr</span><span class="o">,</span> <span class="nx">i</span><span class="o">,</span> <span class="nx">keys</span><span class="o">,</span> <span class="nx">k</span><span class="o">,</span> <span class="nx">v</span><span class="o">;</span> |
|
174 |
|
175 <span class="c">// Per the ECMA 5 spec, toJSON is applied before the replacer is</span> |
|
176 <span class="c"></span> <span class="c">// called. Also per the spec, Date.prototype.toJSON has been added, so</span> |
|
177 <span class="c"></span> <span class="c">// Date instances should be serialized prior to exposure to the</span> |
|
178 <span class="c"></span> <span class="c">// replacer. I disagree with this decision, but the spec is the spec.</span> |
|
179 <span class="c"></span> <span class="k">if</span> <span class="o">(</span><span class="nx">isObject</span><span class="o">(</span><span class="nx">value</span><span class="o">)</span> <span class="o">&&</span> <span class="nx">isFunction</span><span class="o">(</span><span class="nx">value</span><span class="o">.</span><span class="nx">toJSON</span><span class="o">))</span> <span class="o">{</span> |
|
180 <span class="nx">value</span> <span class="o">=</span> <span class="nx">value</span><span class="o">.</span><span class="nx">toJSON</span><span class="o">(</span><span class="nx">key</span><span class="o">);</span> |
|
181 <span class="o">}</span> <span class="k">else</span> <span class="k">if</span> <span class="o">(</span><span class="nx">t</span> <span class="o">===</span> <span class="nx">DATE</span><span class="o">)</span> <span class="o">{</span> |
|
182 <span class="nx">value</span> <span class="o">=</span> <span class="nx">_date</span><span class="o">(</span><span class="nx">value</span><span class="o">);</span> |
|
183 <span class="o">}</span> |
|
184 |
|
185 <span class="k">if</span> <span class="o">(</span><span class="nx">isFunction</span><span class="o">(</span><span class="nx">replacer</span><span class="o">))</span> <span class="o">{</span> |
|
186 <span class="nx">value</span> <span class="o">=</span> <span class="nx">replacer</span><span class="o">.</span><span class="nx">call</span><span class="o">(</span><span class="nx">h</span><span class="o">,</span><span class="nx">key</span><span class="o">,</span><span class="nx">value</span><span class="o">);</span> |
|
187 <span class="o">}</span> |
|
188 |
|
189 <span class="k">if</span> <span class="o">(</span><span class="nx">value</span> <span class="o">!==</span> <span class="nx">h</span><span class="o">[</span><span class="nx">key</span><span class="o">])</span> <span class="o">{</span> |
|
190 <span class="nx">t</span> <span class="o">=</span> <span class="nx">_type</span><span class="o">(</span><span class="nx">value</span><span class="o">);</span> |
|
191 <span class="o">}</span> |
|
192 |
|
193 <span class="nx">switch</span> <span class="o">(</span><span class="nx">t</span><span class="o">)</span> <span class="o">{</span> |
|
194 <span class="nx">case</span> <span class="nx">DATE</span> <span class="o">:</span> <span class="c">// intentional fallthrough. Pre-replacer Dates are</span> |
|
195 <span class="c"></span> <span class="c">// serialized in the toJSON stage. Dates here would</span> |
|
196 <span class="c"></span> <span class="c">// have been produced by the replacer.</span> |
|
197 <span class="c"></span> <span class="nx">case</span> <span class="nx">OBJECT</span> <span class="o">:</span> <span class="k">break</span><span class="o">;</span> |
|
198 <span class="nx">case</span> <span class="nx">STRING</span> <span class="o">:</span> <span class="k">return</span> <span class="nx">_string</span><span class="o">(</span><span class="nx">value</span><span class="o">);</span> |
|
199 <span class="nx">case</span> <span class="nx">NUMBER</span> <span class="o">:</span> <span class="k">return</span> <span class="nb">isFinite</span><span class="o">(</span><span class="nx">value</span><span class="o">)</span> <span class="o">?</span> <span class="nx">value</span><span class="o">+</span><span class="nx">EMPTY</span> <span class="o">:</span> <span class="nx">NULL</span><span class="o">;</span> |
|
200 <span class="nx">case</span> <span class="nx">BOOLEAN</span> <span class="o">:</span> <span class="k">return</span> <span class="nx">value</span><span class="o">+</span><span class="nx">EMPTY</span><span class="o">;</span> |
|
201 <span class="nx">case</span> <span class="nx">NULL</span> <span class="o">:</span> <span class="k">return</span> <span class="nx">NULL</span><span class="o">;</span> |
|
202 <span class="nx">default</span> <span class="o">:</span> <span class="k">return</span> <span class="kc">undefined</span><span class="o">;</span> |
|
203 <span class="o">}</span> |
|
204 |
|
205 <span class="c">// Check for cyclical references in nested objects</span> |
|
206 <span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="nx">stack</span><span class="o">.</span><span class="nx">length</span> <span class="o">-</span> <span class="m">1</span><span class="o">;</span> <span class="nx">i</span> <span class="o">>=</span> <span class="m">0</span><span class="o">;</span> <span class="o">--</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span> |
|
207 <span class="k">if</span> <span class="o">(</span><span class="nx">stack</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">===</span> <span class="nx">value</span><span class="o">)</span> <span class="o">{</span> |
|
208 <span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span><span class="o">(</span><span class="s2">"JSON.stringify. Cyclical reference"</span><span class="o">);</span> |
|
209 <span class="o">}</span> |
|
210 <span class="o">}</span> |
|
211 |
|
212 <span class="nx">arr</span> <span class="o">=</span> <span class="nx">isArray</span><span class="o">(</span><span class="nx">value</span><span class="o">);</span> |
|
213 |
|
214 <span class="c">// Add the object to the processing stack</span> |
|
215 <span class="c"></span> <span class="nx">stack</span><span class="o">.</span><span class="nx">push</span><span class="o">(</span><span class="nx">value</span><span class="o">);</span> |
|
216 |
|
217 <span class="k">if</span> <span class="o">(</span><span class="nx">arr</span><span class="o">)</span> <span class="o">{</span> <span class="c">// Array</span> |
|
218 <span class="c"></span> <span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="nx">value</span><span class="o">.</span><span class="nx">length</span> <span class="o">-</span> <span class="m">1</span><span class="o">;</span> <span class="nx">i</span> <span class="o">>=</span> <span class="m">0</span><span class="o">;</span> <span class="o">--</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span> |
|
219 <span class="nx">a</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">=</span> <span class="nx">_serialize</span><span class="o">(</span><span class="nx">value</span><span class="o">,</span> <span class="nx">i</span><span class="o">)</span> <span class="o">||</span> <span class="nx">NULL</span><span class="o">;</span> |
|
220 <span class="o">}</span> |
|
221 <span class="o">}</span> <span class="k">else</span> <span class="o">{</span> <span class="c">// Object</span> |
|
222 <span class="c"></span> <span class="c">// If whitelist provided, take only those keys</span> |
|
223 <span class="c"></span> <span class="nx">keys</span> <span class="o">=</span> <span class="nx">w</span> <span class="o">||</span> <span class="nx">value</span><span class="o">;</span> |
|
224 <span class="nx">i</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span> |
|
225 |
|
226 <span class="k">for</span> <span class="o">(</span><span class="nx">k</span> <span class="k">in</span> <span class="nx">keys</span><span class="o">)</span> <span class="o">{</span> |
|
227 <span class="k">if</span> <span class="o">(</span><span class="nx">keys</span><span class="o">.</span><span class="nx">hasOwnProperty</span><span class="o">(</span><span class="nx">k</span><span class="o">))</span> <span class="o">{</span> |
|
228 <span class="nx">v</span> <span class="o">=</span> <span class="nx">_serialize</span><span class="o">(</span><span class="nx">value</span><span class="o">,</span> <span class="nx">k</span><span class="o">);</span> |
|
229 <span class="k">if</span> <span class="o">(</span><span class="nx">v</span><span class="o">)</span> <span class="o">{</span> |
|
230 <span class="nx">a</span><span class="o">[</span><span class="nx">i</span><span class="o">++]</span> <span class="o">=</span> <span class="nx">_string</span><span class="o">(</span><span class="nx">k</span><span class="o">)</span> <span class="o">+</span> <span class="nx">colon</span> <span class="o">+</span> <span class="nx">v</span><span class="o">;</span> |
|
231 <span class="o">}</span> |
|
232 <span class="o">}</span> |
|
233 <span class="o">}</span> |
|
234 <span class="o">}</span> |
|
235 |
|
236 <span class="c">// remove the array from the stack</span> |
|
237 <span class="c"></span> <span class="nx">stack</span><span class="o">.</span><span class="nx">pop</span><span class="o">();</span> |
|
238 |
|
239 <span class="k">if</span> <span class="o">(</span><span class="nx">space</span> <span class="o">&&</span> <span class="nx">a</span><span class="o">.</span><span class="nx">length</span><span class="o">)</span> <span class="o">{</span> |
|
240 <span class="k">return</span> <span class="nx">arr</span> <span class="o">?</span> |
|
241 <span class="nx">OPEN_A</span> <span class="o">+</span> <span class="nx">CR</span> <span class="o">+</span> <span class="nx">_indent</span><span class="o">(</span><span class="nx">a</span><span class="o">.</span><span class="nx">join</span><span class="o">(</span><span class="nx">COMMA_CR</span><span class="o">),</span> <span class="nx">space</span><span class="o">)</span> <span class="o">+</span> <span class="nx">CR</span> <span class="o">+</span> <span class="nx">CLOSE_A</span> <span class="o">:</span> |
|
242 <span class="nx">OPEN_O</span> <span class="o">+</span> <span class="nx">CR</span> <span class="o">+</span> <span class="nx">_indent</span><span class="o">(</span><span class="nx">a</span><span class="o">.</span><span class="nx">join</span><span class="o">(</span><span class="nx">COMMA_CR</span><span class="o">),</span> <span class="nx">space</span><span class="o">)</span> <span class="o">+</span> <span class="nx">CR</span> <span class="o">+</span> <span class="nx">CLOSE_O</span><span class="o">;</span> |
|
243 <span class="o">}</span> <span class="k">else</span> <span class="o">{</span> |
|
244 <span class="k">return</span> <span class="nx">arr</span> <span class="o">?</span> |
|
245 <span class="nx">OPEN_A</span> <span class="o">+</span> <span class="nx">a</span><span class="o">.</span><span class="nx">join</span><span class="o">(</span><span class="nx">COMMA</span><span class="o">)</span> <span class="o">+</span> <span class="nx">CLOSE_A</span> <span class="o">:</span> |
|
246 <span class="nx">OPEN_O</span> <span class="o">+</span> <span class="nx">a</span><span class="o">.</span><span class="nx">join</span><span class="o">(</span><span class="nx">COMMA</span><span class="o">)</span> <span class="o">+</span> <span class="nx">CLOSE_O</span><span class="o">;</span> |
|
247 <span class="o">}</span> |
|
248 <span class="o">}</span> |
|
249 |
|
250 <span class="c">// process the input</span> |
|
251 <span class="c"></span> <span class="k">return</span> <span class="nx">_serialize</span><span class="o">({</span><span class="s1">''</span><span class="o">:</span><span class="nx">o</span><span class="o">},</span><span class="s1">''</span><span class="o">);</span> |
|
252 <span class="o">}</span> |
|
253 |
|
254 <span class="nx">Y</span><span class="o">.</span><span class="nx">mix</span><span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">namespace</span><span class="o">(</span><span class="s1">'JSON'</span><span class="o">),{</span> |
|
255 <span class="c">/**</span> |
|
256 <span class="c"> * Leverage native JSON stringify if the browser has a native</span> |
|
257 <span class="c"> * implementation. In general, this is a good idea. See the Known Issues</span> |
|
258 <span class="c"> * section in the JSON user guide for caveats. The default value is true</span> |
|
259 <span class="c"> * for browsers with native JSON support.</span> |
|
260 <span class="c"> *</span> |
|
261 <span class="c"> * @property JSON.useNativeStringify</span> |
|
262 <span class="c"> * @type Boolean</span> |
|
263 <span class="c"> * @default true</span> |
|
264 <span class="c"> * @static</span> |
|
265 <span class="c"> */</span> |
|
266 <span class="nx">useNativeStringify</span> <span class="o">:</span> <span class="o">!!</span><span class="nx">Native</span><span class="o">,</span> |
|
267 |
|
268 <span class="c">/**</span> |
|
269 <span class="c"> * Serializes a Date instance as a UTC date string. Used internally by</span> |
|
270 <span class="c"> * stringify. Override this method if you need Dates serialized in a</span> |
|
271 <span class="c"> * different format.</span> |
|
272 <span class="c"> *</span> |
|
273 <span class="c"> * @method dateToString</span> |
|
274 <span class="c"> * @param d {Date} The Date to serialize</span> |
|
275 <span class="c"> * @return {String} stringified Date in UTC format YYYY-MM-DDTHH:mm:SSZ</span> |
|
276 <span class="c"> * @static</span> |
|
277 <span class="c"> */</span> |
|
278 <span class="nx">dateToString</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">d</span><span class="o">)</span> <span class="o">{</span> |
|
279 <span class="k">function</span> <span class="nx">_zeroPad</span><span class="o">(</span><span class="nx">v</span><span class="o">)</span> <span class="o">{</span> |
|
280 <span class="k">return</span> <span class="nx">v</span> <span class="o"><</span> <span class="m">10</span> <span class="o">?</span> <span class="s1">'0'</span> <span class="o">+</span> <span class="nx">v</span> <span class="o">:</span> <span class="nx">v</span><span class="o">;</span> |
|
281 <span class="o">}</span> |
|
282 |
|
283 <span class="k">return</span> <span class="nx">d</span><span class="o">.</span><span class="nx">getUTCFullYear</span><span class="o">()</span> <span class="o">+</span> <span class="s1">'-'</span> <span class="o">+</span> |
|
284 <span class="nx">_zeroPad</span><span class="o">(</span><span class="nx">d</span><span class="o">.</span><span class="nx">getUTCMonth</span><span class="o">()</span> <span class="o">+</span> <span class="m">1</span><span class="o">)</span> <span class="o">+</span> <span class="s1">'-'</span> <span class="o">+</span> |
|
285 <span class="nx">_zeroPad</span><span class="o">(</span><span class="nx">d</span><span class="o">.</span><span class="nx">getUTCDate</span><span class="o">())</span> <span class="o">+</span> <span class="s1">'T'</span> <span class="o">+</span> |
|
286 <span class="nx">_zeroPad</span><span class="o">(</span><span class="nx">d</span><span class="o">.</span><span class="nx">getUTCHours</span><span class="o">())</span> <span class="o">+</span> <span class="nx">COLON</span> <span class="o">+</span> |
|
287 <span class="nx">_zeroPad</span><span class="o">(</span><span class="nx">d</span><span class="o">.</span><span class="nx">getUTCMinutes</span><span class="o">())</span> <span class="o">+</span> <span class="nx">COLON</span> <span class="o">+</span> |
|
288 <span class="nx">_zeroPad</span><span class="o">(</span><span class="nx">d</span><span class="o">.</span><span class="nx">getUTCSeconds</span><span class="o">())</span> <span class="o">+</span> <span class="s1">'Z'</span><span class="o">;</span> |
|
289 <span class="o">},</span> |
|
290 |
|
291 <span class="c">/**</span> |
|
292 <span class="c"> * <p>Converts an arbitrary value to a JSON string representation.</p></span> |
|
293 <span class="c"> *</span> |
|
294 <span class="c"> * <p>Objects with cyclical references will trigger an exception.</p></span> |
|
295 <span class="c"> *</span> |
|
296 <span class="c"> * <p>If a whitelist is provided, only matching object keys will be</span> |
|
297 <span class="c"> * included. Alternately, a replacer function may be passed as the</span> |
|
298 <span class="c"> * second parameter. This function is executed on every value in the</span> |
|
299 <span class="c"> * input, and its return value will be used in place of the original value.</span> |
|
300 <span class="c"> * This is useful to serialize specialized objects or class instances.</p></span> |
|
301 <span class="c"> *</span> |
|
302 <span class="c"> * <p>If a positive integer or non-empty string is passed as the third</span> |
|
303 <span class="c"> * parameter, the output will be formatted with carriage returns and</span> |
|
304 <span class="c"> * indentation for readability. If a String is passed (such as "\t") it</span> |
|
305 <span class="c"> * will be used once for each indentation level. If a number is passed,</span> |
|
306 <span class="c"> * that number of spaces will be used.</p></span> |
|
307 <span class="c"> *</span> |
|
308 <span class="c"> * @method stringify</span> |
|
309 <span class="c"> * @param o {MIXED} any arbitrary value to convert to JSON string</span> |
|
310 <span class="c"> * @param w {Array|Function} (optional) whitelist of acceptable object</span> |
|
311 <span class="c"> * keys to include, or a replacer function to modify the</span> |
|
312 <span class="c"> * raw value before serialization</span> |
|
313 <span class="c"> * @param ind {Number|String} (optional) indentation character or depth of</span> |
|
314 <span class="c"> * spaces to format the output.</span> |
|
315 <span class="c"> * @return {string} JSON string representation of the input</span> |
|
316 <span class="c"> * @static</span> |
|
317 <span class="c"> */</span> |
|
318 <span class="nx">stringify</span> <span class="o">:</span> <span class="k">function</span> <span class="o">(</span><span class="nx">o</span><span class="o">,</span><span class="nx">w</span><span class="o">,</span><span class="nx">ind</span><span class="o">)</span> <span class="o">{</span> |
|
319 <span class="k">return</span> <span class="nx">Native</span> <span class="o">&&</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">JSON</span><span class="o">.</span><span class="nx">useNativeStringify</span> <span class="o">?</span> |
|
320 <span class="nx">Native</span><span class="o">.</span><span class="nx">stringify</span><span class="o">(</span><span class="nx">o</span><span class="o">,</span><span class="nx">w</span><span class="o">,</span><span class="nx">ind</span><span class="o">)</span> <span class="o">:</span> <span class="nx">_stringify</span><span class="o">(</span><span class="nx">o</span><span class="o">,</span><span class="nx">w</span><span class="o">,</span><span class="nx">ind</span><span class="o">);</span> |
|
321 <span class="o">}</span> |
|
322 <span class="o">});</span> |
|
323 </pre></div> |
|
324 |
|
325 </div> |
|
326 </div> |
|
327 </div> |
|
328 <div class="yui-b"> |
|
329 <div class="nav"> |
|
330 |
|
331 <div id="moduleList" class="module"> |
|
332 <h4>Modules</h4> |
|
333 <ul class="content"> |
|
334 <li class=""><a href="module_anim.html" title="anim">anim</a></li> |
|
335 <li class=""><a href="module_async-queue.html" title="async-queue">async-queue</a></li> |
|
336 <li class=""><a href="module_attribute.html" title="attribute">attribute</a></li> |
|
337 <li class=""><a href="module_base.html" title="base">base</a></li> |
|
338 <li class=""><a href="module_cache.html" title="cache">cache</a></li> |
|
339 <li class=""><a href="module_classnamemanager.html" title="classnamemanager">classnamemanager</a></li> |
|
340 <li class=""><a href="module_collection.html" title="collection">collection</a></li> |
|
341 <li class=""><a href="module_console.html" title="console">console</a></li> |
|
342 <li class=""><a href="module_console-filters.html" title="console-filters">console-filters</a></li> |
|
343 <li class=""><a href="module_cookie.html" title="cookie">cookie</a></li> |
|
344 <li class=""><a href="module_dataschema.html" title="dataschema">dataschema</a></li> |
|
345 <li class=""><a href="module_datasource.html" title="datasource">datasource</a></li> |
|
346 <li class=""><a href="module_datatype.html" title="datatype">datatype</a></li> |
|
347 <li class=""><a href="module_dd.html" title="dd">dd</a></li> |
|
348 <li class=""><a href="module_dom.html" title="dom">dom</a></li> |
|
349 <li class=""><a href="module_dump.html" title="dump">dump</a></li> |
|
350 <li class=""><a href="module_event.html" title="event">event</a></li> |
|
351 <li class=""><a href="module_event-custom.html" title="event-custom">event-custom</a></li> |
|
352 <li class=""><a href="module_event-simulate.html" title="event-simulate">event-simulate</a></li> |
|
353 <li class=""><a href="module_history.html" title="history">history</a></li> |
|
354 <li class=""><a href="module_imageloader.html" title="imageloader">imageloader</a></li> |
|
355 <li class=""><a href="module_io.html" title="io">io</a></li> |
|
356 <li class="selected"><a href="module_json.html" title="json">json</a></li> |
|
357 <li class=""><a href="module_node.html" title="node">node</a></li> |
|
358 <li class=""><a href="module_node-focusmanager.html" title="node-focusmanager">node-focusmanager</a></li> |
|
359 <li class=""><a href="module_node-menunav.html" title="node-menunav">node-menunav</a></li> |
|
360 <li class=""><a href="module_oop.html" title="oop">oop</a></li> |
|
361 <li class=""><a href="module_overlay.html" title="overlay">overlay</a></li> |
|
362 <li class=""><a href="module_plugin.html" title="plugin">plugin</a></li> |
|
363 <li class=""><a href="module_profiler.html" title="profiler">profiler</a></li> |
|
364 <li class=""><a href="module_queue-promote.html" title="queue-promote">queue-promote</a></li> |
|
365 <li class=""><a href="module_slider.html" title="slider">slider</a></li> |
|
366 <li class=""><a href="module_stylesheet.html" title="stylesheet">stylesheet</a></li> |
|
367 <li class=""><a href="module_substitute.html" title="substitute">substitute</a></li> |
|
368 <li class=""><a href="module_test.html" title="test">test</a></li> |
|
369 <li class=""><a href="module_widget.html" title="widget">widget</a></li> |
|
370 <li class=""><a href="module_widget-position.html" title="widget-position">widget-position</a></li> |
|
371 <li class=""><a href="module_widget-position-ext.html" title="widget-position-ext">widget-position-ext</a></li> |
|
372 <li class=""><a href="module_widget-stack.html" title="widget-stack">widget-stack</a></li> |
|
373 <li class=""><a href="module_widget-stdmod.html" title="widget-stdmod">widget-stdmod</a></li> |
|
374 <li class=""><a href="module_yui.html" title="yui">yui</a></li> |
|
375 </ul> |
|
376 </div> |
|
377 |
|
378 <div id="classList" class="module"> |
|
379 <h4>Classes</h4> |
|
380 <ul class="content"> |
|
381 <li class=""><a href="JSON.html" title="JSON">JSON</a></li> |
|
382 </ul> |
|
383 </div> |
|
384 |
|
385 <div id="fileList" class="module"> |
|
386 <h4>Files</h4> |
|
387 <ul class="content"> |
|
388 <li class=""><a href="json-parse.js.html" title="json-parse.js">json-parse.js</a></li> |
|
389 <li class="selected"><a href="json-stringify.js.html" title="json-stringify.js">json-stringify.js</a></li> |
|
390 </ul> |
|
391 </div> |
|
392 |
|
393 |
|
394 |
|
395 |
|
396 |
|
397 </div> |
|
398 </div> |
|
399 </div> |
|
400 <div id="ft"> |
|
401 <hr /> |
|
402 Copyright © 2009 Yahoo! Inc. All rights reserved. |
|
403 </div> |
|
404 </div> |
|
405 <script type="text/javascript"> |
|
406 ALL_YUI_PROPS = [{"access": "private", "host": "JSON", "name": "_BRACKETS", "url": "JSON.html#property__BRACKETS", "type": "property"}, {"access": "", "host": "JSON", "name": "dateToString", "url": "JSON.html#method_dateToString", "type": "method"}, {"access": "private", "host": "JSON", "name": "escapeException", "url": "JSON.html#method_escapeException", "type": "method"}, {"access": "private", "host": "JSON", "name": "_ESCAPES", "url": "JSON.html#property__ESCAPES", "type": "property"}, {"access": "", "host": "JSON", "name": "JSON.useNativeStringify", "url": "JSON.html#property_JSON.useNativeStringify", "type": "property"}, {"access": "private", "host": "JSON", "name": "Native", "url": "JSON.html#property_Native", "type": "property"}, {"access": "", "host": "JSON", "name": "parse", "url": "JSON.html#method_parse", "type": "method"}, {"access": "private", "host": "JSON", "name": "_revive", "url": "JSON.html#method__revive", "type": "method"}, {"access": "", "host": "JSON", "name": "stringify", "url": "JSON.html#method_stringify", "type": "method"}, {"access": "private", "host": "JSON", "name": "_UNICODE_EXCEPTIONS", "url": "JSON.html#property__UNICODE_EXCEPTIONS", "type": "property"}, {"access": "private", "host": "JSON", "name": "_UNSAFE", "url": "JSON.html#property__UNSAFE", "type": "property"}, {"access": "", "host": "JSON", "name": "useNativeParse", "url": "JSON.html#property_useNativeParse", "type": "property"}, {"access": "private", "host": "JSON", "name": "_VALUES", "url": "JSON.html#property__VALUES", "type": "property"}]; |
|
407 </script> |
|
408 </body> |
|
409 </html> |