3421N/A<h1>Upgrading from 1.x<a class="headerlink" href="#upgrading-from-1-x" title="Permalink to this headline">¶</a></h1>
3421N/Acan be modified to work with 2.0 by adding a <tt class="docutils literal"><span class="pre">0</span></tt> as the second
3421N/Aparameter to all calls of <a class="reference internal" href="apiref.html#c.json_loads" title="json_loads"><tt class="xref c c-func docutils literal"><span class="pre">json_loads()</span></tt></a>, <a class="reference internal" href="apiref.html#c.json_loadf" title="json_loadf"><tt class="xref c c-func docutils literal"><span class="pre">json_loadf()</span></tt></a>
3421N/Aand <a class="reference internal" href="apiref.html#c.json_load_file" title="json_load_file"><tt class="xref c c-func docutils literal"><span class="pre">json_load_file()</span></tt></a>.</p>
3421N/A<h2>Compatibility<a class="headerlink" href="#compatibility" title="Permalink to this headline">¶</a></h2>
3421N/A<h2>List of Incompatible Changes<a class="headerlink" href="#list-of-incompatible-changes" title="Permalink to this headline">¶</a></h2>
3421N/A<dd><p class="first">For future needs, a <tt class="docutils literal"><span class="pre">flags</span></tt> parameter was added as the second
3421N/Aparameter to all decoding functions, i.e. <a class="reference internal" href="apiref.html#c.json_loads" title="json_loads"><tt class="xref c c-func docutils literal"><span class="pre">json_loads()</span></tt></a>,
3421N/A<a class="reference internal" href="apiref.html#c.json_loadf" title="json_loadf"><tt class="xref c c-func docutils literal"><span class="pre">json_loadf()</span></tt></a> and <a class="reference internal" href="apiref.html#c.json_load_file" title="json_load_file"><tt class="xref c c-func docutils literal"><span class="pre">json_load_file()</span></tt></a>. All calls to
3421N/Athese functions need to be changed by adding a <tt class="docutils literal"><span class="pre">0</span></tt> as the second
3421N/A<div class="last highlight-c"><div class="highlight"><pre><span class="cm">/* old code */</span>
3421N/A<span class="n">json_loads</span><span class="p">(</span><span class="n">input</span><span class="p">,</span> <span class="o">&</span><span class="n">error</span><span class="p">);</span>
3421N/A<span class="n">json_loads</span><span class="p">(</span><span class="n">input</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="o">&</span><span class="n">error</span><span class="p">);</span>
3421N/A<tt class="xref c c-type docutils literal"><span class="pre">int</span></tt> to the widest available signed integer type, i.e.
3421N/A<tt class="xref c c-type docutils literal"><span class="pre">long</span> <span class="pre">long</span></tt> or <tt class="xref c c-type docutils literal"><span class="pre">long</span></tt>, depending on whether
3421N/A<tt class="xref c c-type docutils literal"><span class="pre">long</span> <span class="pre">long</span></tt> is supported on your system or not. This makes
3421N/A<p class="last"><tt class="docutils literal"><span class="pre">jansson.h</span></tt> has a typedef <a class="reference internal" href="apiref.html#c.json_int_t" title="json_int_t"><tt class="xref c c-type docutils literal"><span class="pre">json_int_t</span></tt></a> to the underlying
3421N/Ainteger type. <tt class="xref c c-type docutils literal"><span class="pre">int</span></tt> should still be used in most cases when
3421N/A<a class="reference internal" href="apiref.html#c.json_int_t" title="json_int_t"><tt class="xref c c-type docutils literal"><span class="pre">json_int_t</span></tt></a> should be explicitly used.</p>
3421N/A<dd>The maximum argument of the <tt class="docutils literal"><span class="pre">JSON_INDENT()</span></tt> macro has been
3421N/Achanged from 255 to 31, to free up bits from the <tt class="docutils literal"><span class="pre">flags</span></tt>
3421N/Aparameter of <a class="reference internal" href="apiref.html#c.json_dumps" title="json_dumps"><tt class="xref c c-func docutils literal"><span class="pre">json_dumps()</span></tt></a>, <a class="reference internal" href="apiref.html#c.json_dumpf" title="json_dumpf"><tt class="xref c c-func docutils literal"><span class="pre">json_dumpf()</span></tt></a> and
3421N/A<a class="reference internal" href="apiref.html#c.json_dump_file" title="json_dump_file"><tt class="xref c c-func docutils literal"><span class="pre">json_dump_file()</span></tt></a>. If your code uses a bigger indentation
3421N/A<tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">int</span></tt> and <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span></tt> have been replaced
3421N/Awith <tt class="xref c c-type docutils literal"><span class="pre">size_t</span></tt>. This includes flags, container sizes, etc.
3421N/A<tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">int</span></tt> and <tt class="xref c c-type docutils literal"><span class="pre">unsigned</span> <span class="pre">long</span></tt> are usually
3421N/Acompatible with <tt class="xref c c-type docutils literal"><span class="pre">size_t</span></tt>.</dd>