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<html><head><title>/src/simplejson/simplejson/encoder.py</title>
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</style></head><body onload="show_line_range()"><div class="python"><code><a class="lnum" href="#1" name="1">0001</a><span class="string">"""</span><br />
<a class="lnum" href="#2" name="2">0002</a><span class="string">Implementation of JSONEncoder</span><br />
<a class="lnum" href="#3" name="3">0003</a><span class="string">"""</span><br />
<a class="lnum" href="#4" name="4">0004</a><span class="keyword">import</span> <span class="name">re</span><br />
<a class="lnum" href="#5" name="5">0005</a><br />
<a class="lnum" href="#6" name="6">0006</a><span class="comment"># this should match any kind of infinity</span><br />
<a class="lnum" href="#7" name="7">0007</a><span class="comment"></span><span class="name">INFCHARS</span> <span class="op">=</span> <span class="name">re</span><span class="op">.</span><span class="name">compile</span><span class="op">(</span><span class="string">r'[infINF]'</span><span class="op">)</span><br />
<a class="lnum" href="#8" name="8">0008</a><span class="name">ESCAPE</span> <span class="op">=</span> <span class="name">re</span><span class="op">.</span><span class="name">compile</span><span class="op">(</span><span class="string">r'[\x00-\x19\\"\b\f\n\r\t]'</span><span class="op">)</span><br />
<a class="lnum" href="#9" name="9">0009</a><span class="name">ESCAPE_ASCII</span> <span class="op">=</span> <span class="name">re</span><span class="op">.</span><span class="name">compile</span><span class="op">(</span><span class="string">r'([\\"]|[^\ -~])'</span><span class="op">)</span><br />
<a class="lnum" href="#10" name="10">0010</a><span class="name">ESCAPE_DCT</span> <span class="op">=</span> <span class="op">{</span><br />
<a class="lnum" href="#11" name="11">0011</a>    <span class="string">'\\'</span><span class="op">:</span> <span class="string">'\\\\'</span><span class="op">,</span><br />
<a class="lnum" href="#12" name="12">0012</a>    <span class="string">'"'</span><span class="op">:</span> <span class="string">'\\"'</span><span class="op">,</span><br />
<a class="lnum" href="#13" name="13">0013</a>    <span class="string">'\b'</span><span class="op">:</span> <span class="string">'\\b'</span><span class="op">,</span><br />
<a class="lnum" href="#14" name="14">0014</a>    <span class="string">'\f'</span><span class="op">:</span> <span class="string">'\\f'</span><span class="op">,</span><br />
<a class="lnum" href="#15" name="15">0015</a>    <span class="string">'\n'</span><span class="op">:</span> <span class="string">'\\n'</span><span class="op">,</span><br />
<a class="lnum" href="#16" name="16">0016</a>    <span class="string">'\r'</span><span class="op">:</span> <span class="string">'\\r'</span><span class="op">,</span><br />
<a class="lnum" href="#17" name="17">0017</a>    <span class="string">'\t'</span><span class="op">:</span> <span class="string">'\\t'</span><span class="op">,</span><br />
<a class="lnum" href="#18" name="18">0018</a><span class="op">}</span><br />
<a class="lnum" href="#19" name="19">0019</a><span class="keyword">for</span> <span class="name">i</span> <span class="keyword">in</span> <span class="name">range</span><span class="op">(</span><span class="number">20</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#20" name="20">0020</a>    <span class="name">ESCAPE_DCT</span><span class="op">.</span><span class="name">setdefault</span><span class="op">(</span><span class="name">chr</span><span class="op">(</span><span class="name">i</span><span class="op">)</span><span class="op">,</span> <span class="string">'\\u%04x'</span> <span class="op">%</span> <span class="op">(</span><span class="name">i</span><span class="op">,</span><span class="op">)</span><span class="op">)</span><br />
<a class="lnum" href="#21" name="21">0021</a><br />
<a class="lnum" href="#22" name="22">0022</a><span class="keyword">def</span> <span class="name">floatstr</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">allow_nan</span><span class="op">=</span><span class="name">True</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#23" name="23">0023</a>    <span class="name">s</span> <span class="op">=</span> <span class="name">str</span><span class="op">(</span><span class="name">o</span><span class="op">)</span><br />
<a class="lnum" href="#24" name="24">0024</a>    <span class="comment"># If the first non-sign is a digit then it's not a special value</span><br />
<a class="lnum" href="#25" name="25">0025</a><span class="comment"></span>    <span class="keyword">if</span> <span class="op">(</span><span class="name">o</span> <span class="op"><</span> <span class="number">0.0</span> <span class="keyword">and</span> <span class="name">s</span><span class="op">[</span><span class="number">1</span><span class="op">]</span><span class="op">.</span><span class="name">isdigit</span><span class="op">(</span><span class="op">)</span><span class="op">)</span> <span class="keyword">or</span> <span class="name">s</span><span class="op">[</span><span class="number">0</span><span class="op">]</span><span class="op">.</span><span class="name">isdigit</span><span class="op">(</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#26" name="26">0026</a>        <span class="keyword">return</span> <span class="name">s</span><br />
<a class="lnum" href="#27" name="27">0027</a>    <span class="keyword">elif</span> <span class="keyword">not</span> <span class="name">allow_nan</span><span class="op">:</span><br />
<a class="lnum" href="#28" name="28">0028</a>        <span class="keyword">raise</span> <span class="name">ValueError</span><span class="op">(</span><span class="string">"Out of range float values are not JSON compliant: %r"</span><br />
<a class="lnum" href="#29" name="29">0029</a>            <span class="op">%</span> <span class="op">(</span><span class="name">o</span><span class="op">,</span><span class="op">)</span><span class="op">)</span><br />
<a class="lnum" href="#30" name="30">0030</a>    <span class="comment"># These are the string representations on the platforms I've tried</span><br />
<a class="lnum" href="#31" name="31">0031</a><span class="comment"></span>    <span class="keyword">if</span> <span class="name">s</span> <span class="op">==</span> <span class="string">'nan'</span><span class="op">:</span><br />
<a class="lnum" href="#32" name="32">0032</a>        <span class="keyword">return</span> <span class="string">'NaN'</span><br />
<a class="lnum" href="#33" name="33">0033</a>    <span class="keyword">if</span> <span class="name">s</span> <span class="op">==</span> <span class="string">'inf'</span><span class="op">:</span><br />
<a class="lnum" href="#34" name="34">0034</a>        <span class="keyword">return</span> <span class="string">'Infinity'</span><br />
<a class="lnum" href="#35" name="35">0035</a>    <span class="keyword">if</span> <span class="name">s</span> <span class="op">==</span> <span class="string">'-inf'</span><span class="op">:</span><br />
<a class="lnum" href="#36" name="36">0036</a>        <span class="keyword">return</span> <span class="string">'-Infinity'</span><br />
<a class="lnum" href="#37" name="37">0037</a>    <span class="comment"># NaN should either be inequal to itself, or equal to everything</span><br />
<a class="lnum" href="#38" name="38">0038</a><span class="comment"></span>    <span class="keyword">if</span> <span class="name">o</span> <span class="op">!=</span> <span class="name">o</span> <span class="keyword">or</span> <span class="name">o</span> <span class="op">==</span> <span class="number">0.0</span><span class="op">:</span><br />
<a class="lnum" href="#39" name="39">0039</a>        <span class="keyword">return</span> <span class="string">'NaN'</span><br />
<a class="lnum" href="#40" name="40">0040</a>    <span class="comment"># Last ditch effort, assume inf</span><br />
<a class="lnum" href="#41" name="41">0041</a><span class="comment"></span>    <span class="keyword">if</span> <span class="name">o</span> <span class="op"><</span> <span class="number">0</span><span class="op">:</span><br />
<a class="lnum" href="#42" name="42">0042</a>        <span class="keyword">return</span> <span class="string">'-Infinity'</span><br />
<a class="lnum" href="#43" name="43">0043</a>    <span class="keyword">return</span> <span class="string">'Infinity'</span><br />
<a class="lnum" href="#44" name="44">0044</a><br />
<a class="lnum" href="#45" name="45">0045</a><span class="keyword">def</span> <span class="name">encode_basestring</span><span class="op">(</span><span class="name">s</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#46" name="46">0046</a>    <span class="string">"""</span><br />
<a class="lnum" href="#47" name="47">0047</a><span class="string">    Return a JSON representation of a Python string</span><br />
<a class="lnum" href="#48" name="48">0048</a><span class="string">    """</span><br />
<a class="lnum" href="#49" name="49">0049</a>    <span class="keyword">def</span> <span class="name">replace</span><span class="op">(</span><span class="name">match</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#50" name="50">0050</a>        <span class="keyword">return</span> <span class="name">ESCAPE_DCT</span><span class="op">[</span><span class="name">match</span><span class="op">.</span><span class="name">group</span><span class="op">(</span><span class="number">0</span><span class="op">)</span><span class="op">]</span><br />
<a class="lnum" href="#51" name="51">0051</a>    <span class="keyword">return</span> <span class="string">'"'</span> <span class="op">+</span> <span class="name">ESCAPE</span><span class="op">.</span><span class="name">sub</span><span class="op">(</span><span class="name">replace</span><span class="op">,</span> <span class="name">s</span><span class="op">)</span> <span class="op">+</span> <span class="string">'"'</span><br />
<a class="lnum" href="#52" name="52">0052</a><br />
<a class="lnum" href="#53" name="53">0053</a><span class="keyword">def</span> <span class="name">encode_basestring_ascii</span><span class="op">(</span><span class="name">s</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#54" name="54">0054</a>    <span class="keyword">def</span> <span class="name">replace</span><span class="op">(</span><span class="name">match</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#55" name="55">0055</a>        <span class="name">s</span> <span class="op">=</span> <span class="name">match</span><span class="op">.</span><span class="name">group</span><span class="op">(</span><span class="number">0</span><span class="op">)</span><br />
<a class="lnum" href="#56" name="56">0056</a>        <span class="keyword">try</span><span class="op">:</span><br />
<a class="lnum" href="#57" name="57">0057</a>            <span class="keyword">return</span> <span class="name">ESCAPE_DCT</span><span class="op">[</span><span class="name">s</span><span class="op">]</span><br />
<a class="lnum" href="#58" name="58">0058</a>        <span class="keyword">except</span> <span class="name">KeyError</span><span class="op">:</span><br />
<a class="lnum" href="#59" name="59">0059</a>            <span class="keyword">return</span> <span class="string">'\\u%04x'</span> <span class="op">%</span> <span class="op">(</span><span class="name">ord</span><span class="op">(</span><span class="name">s</span><span class="op">)</span><span class="op">,</span><span class="op">)</span><br />
<a class="lnum" href="#60" name="60">0060</a>    <span class="keyword">return</span> <span class="string">'"'</span> <span class="op">+</span> <span class="name">str</span><span class="op">(</span><span class="name">ESCAPE_ASCII</span><span class="op">.</span><span class="name">sub</span><span class="op">(</span><span class="name">replace</span><span class="op">,</span> <span class="name">s</span><span class="op">)</span><span class="op">)</span> <span class="op">+</span> <span class="string">'"'</span><br />
<a class="lnum" href="#61" name="61">0061</a><br />
<a class="lnum" href="#62" name="62">0062</a><br />
<a class="lnum" href="#63" name="63">0063</a><span class="keyword">class</span> <span class="name">JSONEncoder</span><span class="op">(</span><span class="name">object</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#64" name="64">0064</a>    <span class="string">"""</span><br />
<a class="lnum" href="#65" name="65">0065</a><span class="string">    Extensible JSON <http://json.org> encoder for Python data structures.</span><br />
<a class="lnum" href="#66" name="66">0066</a><span class="string"></span><br />
<a class="lnum" href="#67" name="67">0067</a><span class="string">    Supports the following objects and types by default:</span><br />
<a class="lnum" href="#68" name="68">0068</a><span class="string">    </span><br />
<a class="lnum" href="#69" name="69">0069</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#70" name="70">0070</a><span class="string">    | Python            | JSON          |</span><br />
<a class="lnum" href="#71" name="71">0071</a><span class="string">    +===================+===============+</span><br />
<a class="lnum" href="#72" name="72">0072</a><span class="string">    | dict              | object        |</span><br />
<a class="lnum" href="#73" name="73">0073</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#74" name="74">0074</a><span class="string">    | list, tuple       | array         |</span><br />
<a class="lnum" href="#75" name="75">0075</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#76" name="76">0076</a><span class="string">    | str, unicode      | string        |</span><br />
<a class="lnum" href="#77" name="77">0077</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#78" name="78">0078</a><span class="string">    | int, long, float  | number        |</span><br />
<a class="lnum" href="#79" name="79">0079</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#80" name="80">0080</a><span class="string">    | True              | true          |</span><br />
<a class="lnum" href="#81" name="81">0081</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#82" name="82">0082</a><span class="string">    | False             | false         |</span><br />
<a class="lnum" href="#83" name="83">0083</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#84" name="84">0084</a><span class="string">    | None              | null          |</span><br />
<a class="lnum" href="#85" name="85">0085</a><span class="string">    +-------------------+---------------+</span><br />
<a class="lnum" href="#86" name="86">0086</a><span class="string"></span><br />
<a class="lnum" href="#87" name="87">0087</a><span class="string">    To extend this to recognize other objects, subclass and implement a</span><br />
<a class="lnum" href="#88" name="88">0088</a><span class="string">    ``.default()`` method with another method that returns a serializable</span><br />
<a class="lnum" href="#89" name="89">0089</a><span class="string">    object for ``o`` if possible, otherwise it should call the superclass</span><br />
<a class="lnum" href="#90" name="90">0090</a><span class="string">    implementation (to raise ``TypeError``).</span><br />
<a class="lnum" href="#91" name="91">0091</a><span class="string">    """</span><br />
<a class="lnum" href="#92" name="92">0092</a>    <span class="name">__all__</span> <span class="op">=</span> <span class="op">[</span><span class="string">'__init__'</span><span class="op">,</span> <span class="string">'default'</span><span class="op">,</span> <span class="string">'encode'</span><span class="op">,</span> <span class="string">'iterencode'</span><span class="op">]</span><br />
<a class="lnum" href="#93" name="93">0093</a>    <span class="keyword">def</span> <span class="name">__init__</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">skipkeys</span><span class="op">=</span><span class="name">False</span><span class="op">,</span> <span class="name">ensure_ascii</span><span class="op">=</span><span class="name">True</span><span class="op">,</span> <span class="name">check_circular</span><span class="op">=</span><span class="name">True</span><span class="op">,</span><br />
<a class="lnum" href="#94" name="94">0094</a>            <span class="name">allow_nan</span><span class="op">=</span><span class="name">True</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#95" name="95">0095</a>        <span class="string">"""</span><br />
<a class="lnum" href="#96" name="96">0096</a><span class="string">        Constructor for JSONEncoder, with sensible defaults.</span><br />
<a class="lnum" href="#97" name="97">0097</a><span class="string">        </span><br />
<a class="lnum" href="#98" name="98">0098</a><span class="string">        If skipkeys is False, then it is a TypeError to attempt</span><br />
<a class="lnum" href="#99" name="99">0099</a><span class="string">        encoding of keys that are not str, int, long, float or None.  If</span><br />
<a class="lnum" href="#100" name="100">0100</a><span class="string">        skipkeys is True, such items are simply skipped.</span><br />
<a class="lnum" href="#101" name="101">0101</a><span class="string"></span><br />
<a class="lnum" href="#102" name="102">0102</a><span class="string">        If ensure_ascii is True, the output is guaranteed to be str</span><br />
<a class="lnum" href="#103" name="103">0103</a><span class="string">        objects with all incoming unicode characters escaped.  If ensure_ascii</span><br />
<a class="lnum" href="#104" name="104">0104</a><span class="string">        is false, the output will be unicode object.</span><br />
<a class="lnum" href="#105" name="105">0105</a><span class="string"></span><br />
<a class="lnum" href="#106" name="106">0106</a><span class="string">        If check_circular is True, then lists, dicts, and custom encoded</span><br />
<a class="lnum" href="#107" name="107">0107</a><span class="string">        objects will be checked for circular references during encoding to</span><br />
<a class="lnum" href="#108" name="108">0108</a><span class="string">        prevent an infinite recursion (which would cause an OverflowError).</span><br />
<a class="lnum" href="#109" name="109">0109</a><span class="string">        Otherwise, no such check takes place.</span><br />
<a class="lnum" href="#110" name="110">0110</a><span class="string"></span><br />
<a class="lnum" href="#111" name="111">0111</a><span class="string">        If allow_nan is True, then NaN, Infinity, and -Infinity will be</span><br />
<a class="lnum" href="#112" name="112">0112</a><span class="string">        encoded as such.  This behavior is not JSON specification compliant,</span><br />
<a class="lnum" href="#113" name="113">0113</a><span class="string">        but is consistent with most JavaScript based encoders and decoders.</span><br />
<a class="lnum" href="#114" name="114">0114</a><span class="string">        Otherwise, it will be a ValueError to encode such floats.</span><br />
<a class="lnum" href="#115" name="115">0115</a><span class="string">        """</span><br />
<a class="lnum" href="#116" name="116">0116</a><br />
<a class="lnum" href="#117" name="117">0117</a>        <span class="name">self</span><span class="op">.</span><span class="name">skipkeys</span> <span class="op">=</span> <span class="name">skipkeys</span><br />
<a class="lnum" href="#118" name="118">0118</a>        <span class="name">self</span><span class="op">.</span><span class="name">ensure_ascii</span> <span class="op">=</span> <span class="name">ensure_ascii</span><br />
<a class="lnum" href="#119" name="119">0119</a>        <span class="name">self</span><span class="op">.</span><span class="name">check_circular</span> <span class="op">=</span> <span class="name">check_circular</span><br />
<a class="lnum" href="#120" name="120">0120</a>        <span class="name">self</span><span class="op">.</span><span class="name">allow_nan</span> <span class="op">=</span> <span class="name">allow_nan</span><br />
<a class="lnum" href="#121" name="121">0121</a><br />
<a class="lnum" href="#122" name="122">0122</a>    <span class="keyword">def</span> <span class="name">_iterencode_list</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">lst</span><span class="op">,</span> <span class="name">markers</span><span class="op">=</span><span class="name">None</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#123" name="123">0123</a>        <span class="keyword">if</span> <span class="keyword">not</span> <span class="name">lst</span><span class="op">:</span><br />
<a class="lnum" href="#124" name="124">0124</a>            <span class="keyword">yield</span> <span class="string">'[]'</span><br />
<a class="lnum" href="#125" name="125">0125</a>            <span class="keyword">return</span><br />
<a class="lnum" href="#126" name="126">0126</a>        <span class="keyword">if</span> <span class="name">markers</span> <span class="keyword">is</span> <span class="keyword">not</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#127" name="127">0127</a>            <span class="name">markerid</span> <span class="op">=</span> <span class="name">id</span><span class="op">(</span><span class="name">lst</span><span class="op">)</span><br />
<a class="lnum" href="#128" name="128">0128</a>            <span class="keyword">if</span> <span class="name">markerid</span> <span class="keyword">in</span> <span class="name">markers</span><span class="op">:</span><br />
<a class="lnum" href="#129" name="129">0129</a>                <span class="keyword">raise</span> <span class="name">ValueError</span><span class="op">(</span><span class="string">"Circular reference detected"</span><span class="op">)</span><br />
<a class="lnum" href="#130" name="130">0130</a>            <span class="name">markers</span><span class="op">[</span><span class="name">markerid</span><span class="op">]</span> <span class="op">=</span> <span class="name">lst</span><br />
<a class="lnum" href="#131" name="131">0131</a>        <span class="keyword">yield</span> <span class="string">'['</span><br />
<a class="lnum" href="#132" name="132">0132</a>        <span class="name">first</span> <span class="op">=</span> <span class="name">True</span><br />
<a class="lnum" href="#133" name="133">0133</a>        <span class="keyword">for</span> <span class="name">value</span> <span class="keyword">in</span> <span class="name">lst</span><span class="op">:</span><br />
<a class="lnum" href="#134" name="134">0134</a>            <span class="keyword">if</span> <span class="name">first</span><span class="op">:</span><br />
<a class="lnum" href="#135" name="135">0135</a>                <span class="name">first</span> <span class="op">=</span> <span class="name">False</span><br />
<a class="lnum" href="#136" name="136">0136</a>            <span class="keyword">else</span><span class="op">:</span><br />
<a class="lnum" href="#137" name="137">0137</a>                <span class="keyword">yield</span> <span class="string">', '</span><br />
<a class="lnum" href="#138" name="138">0138</a>            <span class="keyword">for</span> <span class="name">chunk</span> <span class="keyword">in</span> <span class="name">self</span><span class="op">.</span><span class="name">_iterencode</span><span class="op">(</span><span class="name">value</span><span class="op">,</span> <span class="name">markers</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#139" name="139">0139</a>                <span class="keyword">yield</span> <span class="name">chunk</span><br />
<a class="lnum" href="#140" name="140">0140</a>        <span class="keyword">yield</span> <span class="string">']'</span><br />
<a class="lnum" href="#141" name="141">0141</a>        <span class="keyword">if</span> <span class="name">markers</span> <span class="keyword">is</span> <span class="keyword">not</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#142" name="142">0142</a>            <span class="keyword">del</span> <span class="name">markers</span><span class="op">[</span><span class="name">markerid</span><span class="op">]</span><br />
<a class="lnum" href="#143" name="143">0143</a><br />
<a class="lnum" href="#144" name="144">0144</a>    <span class="keyword">def</span> <span class="name">_iterencode_dict</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">dct</span><span class="op">,</span> <span class="name">markers</span><span class="op">=</span><span class="name">None</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#145" name="145">0145</a>        <span class="keyword">if</span> <span class="keyword">not</span> <span class="name">dct</span><span class="op">:</span><br />
<a class="lnum" href="#146" name="146">0146</a>            <span class="keyword">yield</span> <span class="string">'{}'</span><br />
<a class="lnum" href="#147" name="147">0147</a>            <span class="keyword">return</span><br />
<a class="lnum" href="#148" name="148">0148</a>        <span class="keyword">if</span> <span class="name">markers</span> <span class="keyword">is</span> <span class="keyword">not</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#149" name="149">0149</a>            <span class="name">markerid</span> <span class="op">=</span> <span class="name">id</span><span class="op">(</span><span class="name">dct</span><span class="op">)</span><br />
<a class="lnum" href="#150" name="150">0150</a>            <span class="keyword">if</span> <span class="name">markerid</span> <span class="keyword">in</span> <span class="name">markers</span><span class="op">:</span><br />
<a class="lnum" href="#151" name="151">0151</a>                <span class="keyword">raise</span> <span class="name">ValueError</span><span class="op">(</span><span class="string">"Circular reference detected"</span><span class="op">)</span><br />
<a class="lnum" href="#152" name="152">0152</a>            <span class="name">markers</span><span class="op">[</span><span class="name">markerid</span><span class="op">]</span> <span class="op">=</span> <span class="name">dct</span><br />
<a class="lnum" href="#153" name="153">0153</a>        <span class="keyword">yield</span> <span class="string">'{'</span><br />
<a class="lnum" href="#154" name="154">0154</a>        <span class="name">first</span> <span class="op">=</span> <span class="name">True</span><br />
<a class="lnum" href="#155" name="155">0155</a>        <span class="keyword">if</span> <span class="name">self</span><span class="op">.</span><span class="name">ensure_ascii</span><span class="op">:</span><br />
<a class="lnum" href="#156" name="156">0156</a>            <span class="name">encoder</span> <span class="op">=</span> <span class="name">encode_basestring_ascii</span><br />
<a class="lnum" href="#157" name="157">0157</a>        <span class="keyword">else</span><span class="op">:</span><br />
<a class="lnum" href="#158" name="158">0158</a>            <span class="name">encoder</span> <span class="op">=</span> <span class="name">encode_basestring</span><br />
<a class="lnum" href="#159" name="159">0159</a>        <span class="name">allow_nan</span> <span class="op">=</span> <span class="name">self</span><span class="op">.</span><span class="name">allow_nan</span><br />
<a class="lnum" href="#160" name="160">0160</a>        <span class="keyword">for</span> <span class="name">key</span><span class="op">,</span> <span class="name">value</span> <span class="keyword">in</span> <span class="name">dct</span><span class="op">.</span><span class="name">iteritems</span><span class="op">(</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#161" name="161">0161</a>            <span class="keyword">if</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">key</span><span class="op">,</span> <span class="name">basestring</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#162" name="162">0162</a>                <span class="keyword">pass</span><br />
<a class="lnum" href="#163" name="163">0163</a>            <span class="comment"># JavaScript is weakly typed for these, so it makes sense to</span><br />
<a class="lnum" href="#164" name="164">0164</a><span class="comment"></span>            <span class="comment"># also allow them.  Many encoders seem to do something like this.</span><br />
<a class="lnum" href="#165" name="165">0165</a><span class="comment"></span>            <span class="keyword">elif</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">key</span><span class="op">,</span> <span class="name">float</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#166" name="166">0166</a>                <span class="name">key</span> <span class="op">=</span> <span class="name">floatstr</span><span class="op">(</span><span class="name">key</span><span class="op">,</span> <span class="name">allow_nan</span><span class="op">)</span><br />
<a class="lnum" href="#167" name="167">0167</a>            <span class="keyword">elif</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">key</span><span class="op">,</span> <span class="op">(</span><span class="name">int</span><span class="op">,</span> <span class="name">long</span><span class="op">)</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#168" name="168">0168</a>                <span class="name">key</span> <span class="op">=</span> <span class="name">str</span><span class="op">(</span><span class="name">key</span><span class="op">)</span><br />
<a class="lnum" href="#169" name="169">0169</a>            <span class="keyword">elif</span> <span class="name">key</span> <span class="keyword">is</span> <span class="name">True</span><span class="op">:</span><br />
<a class="lnum" href="#170" name="170">0170</a>                <span class="name">key</span> <span class="op">=</span> <span class="string">'true'</span><br />
<a class="lnum" href="#171" name="171">0171</a>            <span class="keyword">elif</span> <span class="name">key</span> <span class="keyword">is</span> <span class="name">False</span><span class="op">:</span><br />
<a class="lnum" href="#172" name="172">0172</a>                <span class="name">key</span> <span class="op">=</span> <span class="string">'false'</span><br />
<a class="lnum" href="#173" name="173">0173</a>            <span class="keyword">elif</span> <span class="name">key</span> <span class="keyword">is</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#174" name="174">0174</a>                <span class="name">key</span> <span class="op">=</span> <span class="string">'null'</span><br />
<a class="lnum" href="#175" name="175">0175</a>            <span class="keyword">elif</span> <span class="name">self</span><span class="op">.</span><span class="name">skipkeys</span><span class="op">:</span><br />
<a class="lnum" href="#176" name="176">0176</a>                <span class="keyword">continue</span><br />
<a class="lnum" href="#177" name="177">0177</a>            <span class="keyword">else</span><span class="op">:</span><br />
<a class="lnum" href="#178" name="178">0178</a>                <span class="keyword">raise</span> <span class="name">TypeError</span><span class="op">(</span><span class="string">"key %r is not a string"</span> <span class="op">%</span> <span class="op">(</span><span class="name">key</span><span class="op">,</span><span class="op">)</span><span class="op">)</span><br />
<a class="lnum" href="#179" name="179">0179</a>            <span class="keyword">if</span> <span class="name">first</span><span class="op">:</span><br />
<a class="lnum" href="#180" name="180">0180</a>                <span class="name">first</span> <span class="op">=</span> <span class="name">False</span><br />
<a class="lnum" href="#181" name="181">0181</a>            <span class="keyword">else</span><span class="op">:</span><br />
<a class="lnum" href="#182" name="182">0182</a>                <span class="keyword">yield</span> <span class="string">', '</span><br />
<a class="lnum" href="#183" name="183">0183</a>            <span class="keyword">yield</span> <span class="name">encoder</span><span class="op">(</span><span class="name">key</span><span class="op">)</span><br />
<a class="lnum" href="#184" name="184">0184</a>            <span class="keyword">yield</span> <span class="string">':'</span><br />
<a class="lnum" href="#185" name="185">0185</a>            <span class="keyword">for</span> <span class="name">chunk</span> <span class="keyword">in</span> <span class="name">self</span><span class="op">.</span><span class="name">_iterencode</span><span class="op">(</span><span class="name">value</span><span class="op">,</span> <span class="name">markers</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#186" name="186">0186</a>                <span class="keyword">yield</span> <span class="name">chunk</span><br />
<a class="lnum" href="#187" name="187">0187</a>        <span class="keyword">yield</span> <span class="string">'}'</span><br />
<a class="lnum" href="#188" name="188">0188</a>        <span class="keyword">if</span> <span class="name">markers</span> <span class="keyword">is</span> <span class="keyword">not</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#189" name="189">0189</a>            <span class="keyword">del</span> <span class="name">markers</span><span class="op">[</span><span class="name">markerid</span><span class="op">]</span><br />
<a class="lnum" href="#190" name="190">0190</a><br />
<a class="lnum" href="#191" name="191">0191</a>    <span class="keyword">def</span> <span class="name">_iterencode</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">o</span><span class="op">,</span> <span class="name">markers</span><span class="op">=</span><span class="name">None</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#192" name="192">0192</a>        <span class="keyword">if</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">basestring</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#193" name="193">0193</a>            <span class="keyword">if</span> <span class="name">self</span><span class="op">.</span><span class="name">ensure_ascii</span><span class="op">:</span><br />
<a class="lnum" href="#194" name="194">0194</a>                <span class="name">encoder</span> <span class="op">=</span> <span class="name">encode_basestring_ascii</span><br />
<a class="lnum" href="#195" name="195">0195</a>            <span class="keyword">else</span><span class="op">:</span><br />
<a class="lnum" href="#196" name="196">0196</a>                <span class="name">encoder</span> <span class="op">=</span> <span class="name">encode_basestring</span><br />
<a class="lnum" href="#197" name="197">0197</a>            <span class="keyword">yield</span> <span class="name">encoder</span><span class="op">(</span><span class="name">o</span><span class="op">)</span><br />
<a class="lnum" href="#198" name="198">0198</a>        <span class="keyword">elif</span> <span class="name">o</span> <span class="keyword">is</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#199" name="199">0199</a>            <span class="keyword">yield</span> <span class="string">'null'</span><br />
<a class="lnum" href="#200" name="200">0200</a>        <span class="keyword">elif</span> <span class="name">o</span> <span class="keyword">is</span> <span class="name">True</span><span class="op">:</span><br />
<a class="lnum" href="#201" name="201">0201</a>            <span class="keyword">yield</span> <span class="string">'true'</span><br />
<a class="lnum" href="#202" name="202">0202</a>        <span class="keyword">elif</span> <span class="name">o</span> <span class="keyword">is</span> <span class="name">False</span><span class="op">:</span><br />
<a class="lnum" href="#203" name="203">0203</a>            <span class="keyword">yield</span> <span class="string">'false'</span><br />
<a class="lnum" href="#204" name="204">0204</a>        <span class="keyword">elif</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="op">(</span><span class="name">int</span><span class="op">,</span> <span class="name">long</span><span class="op">)</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#205" name="205">0205</a>            <span class="keyword">yield</span> <span class="name">str</span><span class="op">(</span><span class="name">o</span><span class="op">)</span><br />
<a class="lnum" href="#206" name="206">0206</a>        <span class="keyword">elif</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">float</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#207" name="207">0207</a>            <span class="keyword">yield</span> <span class="name">floatstr</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">self</span><span class="op">.</span><span class="name">allow_nan</span><span class="op">)</span><br />
<a class="lnum" href="#208" name="208">0208</a>        <span class="keyword">elif</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="op">(</span><span class="name">list</span><span class="op">,</span> <span class="name">tuple</span><span class="op">)</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#209" name="209">0209</a>            <span class="keyword">for</span> <span class="name">chunk</span> <span class="keyword">in</span> <span class="name">self</span><span class="op">.</span><span class="name">_iterencode_list</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">markers</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#210" name="210">0210</a>                <span class="keyword">yield</span> <span class="name">chunk</span><br />
<a class="lnum" href="#211" name="211">0211</a>        <span class="keyword">elif</span> <span class="name">isinstance</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">dict</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#212" name="212">0212</a>            <span class="keyword">for</span> <span class="name">chunk</span> <span class="keyword">in</span> <span class="name">self</span><span class="op">.</span><span class="name">_iterencode_dict</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">markers</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#213" name="213">0213</a>                <span class="keyword">yield</span> <span class="name">chunk</span><br />
<a class="lnum" href="#214" name="214">0214</a>        <span class="keyword">else</span><span class="op">:</span><br />
<a class="lnum" href="#215" name="215">0215</a>            <span class="keyword">if</span> <span class="name">markers</span> <span class="keyword">is</span> <span class="keyword">not</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#216" name="216">0216</a>                <span class="name">markerid</span> <span class="op">=</span> <span class="name">id</span><span class="op">(</span><span class="name">o</span><span class="op">)</span><br />
<a class="lnum" href="#217" name="217">0217</a>                <span class="keyword">if</span> <span class="name">markerid</span> <span class="keyword">in</span> <span class="name">markers</span><span class="op">:</span><br />
<a class="lnum" href="#218" name="218">0218</a>                    <span class="keyword">raise</span> <span class="name">ValueError</span><span class="op">(</span><span class="string">"Circular reference detected"</span><span class="op">)</span><br />
<a class="lnum" href="#219" name="219">0219</a>                <span class="name">markers</span><span class="op">[</span><span class="name">markerid</span><span class="op">]</span> <span class="op">=</span> <span class="name">o</span><br />
<a class="lnum" href="#220" name="220">0220</a>            <span class="keyword">for</span> <span class="name">chunk</span> <span class="keyword">in</span> <span class="name">self</span><span class="op">.</span><span class="name">_iterencode_default</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">markers</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#221" name="221">0221</a>                <span class="keyword">yield</span> <span class="name">chunk</span><br />
<a class="lnum" href="#222" name="222">0222</a>            <span class="keyword">if</span> <span class="name">markers</span> <span class="keyword">is</span> <span class="keyword">not</span> <span class="name">None</span><span class="op">:</span><br />
<a class="lnum" href="#223" name="223">0223</a>                <span class="keyword">del</span> <span class="name">markers</span><span class="op">[</span><span class="name">markerid</span><span class="op">]</span><br />
<a class="lnum" href="#224" name="224">0224</a><br />
<a class="lnum" href="#225" name="225">0225</a>    <span class="keyword">def</span> <span class="name">_iterencode_default</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">o</span><span class="op">,</span> <span class="name">markers</span><span class="op">=</span><span class="name">None</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#226" name="226">0226</a>        <span class="name">newobj</span> <span class="op">=</span> <span class="name">self</span><span class="op">.</span><span class="name">default</span><span class="op">(</span><span class="name">o</span><span class="op">)</span><br />
<a class="lnum" href="#227" name="227">0227</a>        <span class="keyword">return</span> <span class="name">self</span><span class="op">.</span><span class="name">_iterencode</span><span class="op">(</span><span class="name">newobj</span><span class="op">,</span> <span class="name">markers</span><span class="op">)</span><br />
<a class="lnum" href="#228" name="228">0228</a><br />
<a class="lnum" href="#229" name="229">0229</a>    <span class="keyword">def</span> <span class="name">default</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">o</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#230" name="230">0230</a>        <span class="string">"""</span><br />
<a class="lnum" href="#231" name="231">0231</a><span class="string">        Implement this method in a subclass such that it returns</span><br />
<a class="lnum" href="#232" name="232">0232</a><span class="string">        a serializable object for ``o``, or calls the base implementation</span><br />
<a class="lnum" href="#233" name="233">0233</a><span class="string">        (to raise a ``TypeError``).</span><br />
<a class="lnum" href="#234" name="234">0234</a><span class="string"></span><br />
<a class="lnum" href="#235" name="235">0235</a><span class="string">        For example, to support arbitrary iterators, you could</span><br />
<a class="lnum" href="#236" name="236">0236</a><span class="string">        implement default like this::</span><br />
<a class="lnum" href="#237" name="237">0237</a><span class="string">            </span><br />
<a class="lnum" href="#238" name="238">0238</a><span class="string">            def default(self, o):</span><br />
<a class="lnum" href="#239" name="239">0239</a><span class="string">                try:</span><br />
<a class="lnum" href="#240" name="240">0240</a><span class="string">                    iterable = iter(o)</span><br />
<a class="lnum" href="#241" name="241">0241</a><span class="string">                except TypeError:</span><br />
<a class="lnum" href="#242" name="242">0242</a><span class="string">                    pass</span><br />
<a class="lnum" href="#243" name="243">0243</a><span class="string">                else:</span><br />
<a class="lnum" href="#244" name="244">0244</a><span class="string">                    return list(iterable)</span><br />
<a class="lnum" href="#245" name="245">0245</a><span class="string">                return JSONEncoder.default(self, o)</span><br />
<a class="lnum" href="#246" name="246">0246</a><span class="string">        """</span><br />
<a class="lnum" href="#247" name="247">0247</a>        <span class="keyword">raise</span> <span class="name">TypeError</span><span class="op">(</span><span class="string">"%r is not JSON serializable"</span> <span class="op">%</span> <span class="op">(</span><span class="name">o</span><span class="op">,</span><span class="op">)</span><span class="op">)</span><br />
<a class="lnum" href="#248" name="248">0248</a><br />
<a class="lnum" href="#249" name="249">0249</a>    <span class="keyword">def</span> <span class="name">encode</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">o</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#250" name="250">0250</a>        <span class="string">"""</span><br />
<a class="lnum" href="#251" name="251">0251</a><span class="string">        Return a JSON string representation of a Python data structure.</span><br />
<a class="lnum" href="#252" name="252">0252</a><span class="string"></span><br />
<a class="lnum" href="#253" name="253">0253</a><span class="string">        >>> JSONEncoder().encode({"foo": ["bar", "baz"]})</span><br />
<a class="lnum" href="#254" name="254">0254</a><span class="string">        '{"foo":["bar", "baz"]}'</span><br />
<a class="lnum" href="#255" name="255">0255</a><span class="string">        """</span><br />
<a class="lnum" href="#256" name="256">0256</a>        <span class="comment"># This doesn't pass the iterator directly to ''.join() because it</span><br />
<a class="lnum" href="#257" name="257">0257</a><span class="comment"></span>        <span class="comment"># sucks at reporting exceptions.  It's going to do this internally</span><br />
<a class="lnum" href="#258" name="258">0258</a><span class="comment"></span>        <span class="comment"># anyway because it uses PySequence_Fast or similar.</span><br />
<a class="lnum" href="#259" name="259">0259</a><span class="comment"></span>        <span class="name">chunks</span> <span class="op">=</span> <span class="name">list</span><span class="op">(</span><span class="name">self</span><span class="op">.</span><span class="name">iterencode</span><span class="op">(</span><span class="name">o</span><span class="op">)</span><span class="op">)</span><br />
<a class="lnum" href="#260" name="260">0260</a>        <span class="keyword">return</span> <span class="string">''</span><span class="op">.</span><span class="name">join</span><span class="op">(</span><span class="name">chunks</span><span class="op">)</span><br />
<a class="lnum" href="#261" name="261">0261</a><br />
<a class="lnum" href="#262" name="262">0262</a>    <span class="keyword">def</span> <span class="name">iterencode</span><span class="op">(</span><span class="name">self</span><span class="op">,</span> <span class="name">o</span><span class="op">)</span><span class="op">:</span><br />
<a class="lnum" href="#263" name="263">0263</a>        <span class="string">"""</span><br />
<a class="lnum" href="#264" name="264">0264</a><span class="string">        Encode the given object and yield each string</span><br />
<a class="lnum" href="#265" name="265">0265</a><span class="string">        representation as available.</span><br />
<a class="lnum" href="#266" name="266">0266</a><span class="string">        </span><br />
<a class="lnum" href="#267" name="267">0267</a><span class="string">        For example::</span><br />
<a class="lnum" href="#268" name="268">0268</a><span class="string">            </span><br />
<a class="lnum" href="#269" name="269">0269</a><span class="string">            for chunk in JSONEncoder().iterencode(bigobject):</span><br />
<a class="lnum" href="#270" name="270">0270</a><span class="string">                mysocket.write(chunk)</span><br />
<a class="lnum" href="#271" name="271">0271</a><span class="string">        """</span><br />
<a class="lnum" href="#272" name="272">0272</a>        <span class="keyword">if</span> <span class="name">self</span><span class="op">.</span><span class="name">check_circular</span><span class="op">:</span><br />
<a class="lnum" href="#273" name="273">0273</a>            <span class="name">markers</span> <span class="op">=</span> <span class="op">{</span><span class="op">}</span><br />
<a class="lnum" href="#274" name="274">0274</a>        <span class="keyword">else</span><span class="op">:</span><br />
<a class="lnum" href="#275" name="275">0275</a>            <span class="name">markers</span> <span class="op">=</span> <span class="name">None</span><br />
<a class="lnum" href="#276" name="276">0276</a>        <span class="keyword">return</span> <span class="name">self</span><span class="op">.</span><span class="name">_iterencode</span><span class="op">(</span><span class="name">o</span><span class="op">,</span> <span class="name">markers</span><span class="op">)</span><br />
<a class="lnum" href="#277" name="277">0277</a><br />
<a class="lnum" href="#278" name="278">0278</a><span class="name">__all__</span> <span class="op">=</span> <span class="op">[</span><span class="string">'JSONEncoder'</span><span class="op">]</span></code></div></body></html>