1
0
Fork 0
mirror of https://github.com/ganelson/inform.git synced 2024-07-08 01:54:21 +03:00
inform7/docs/supervisor-module/7-cns.html

260 lines
52 KiB
HTML
Raw Normal View History

2020-02-27 13:18:25 +02:00
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
2020-05-09 01:13:45 +03:00
<title>Census</title>
2020-05-03 03:20:55 +03:00
<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
2020-03-19 02:11:25 +02:00
<meta name="viewport" content="width=device-width initial-scale=1">
2020-02-27 13:18:25 +02:00
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Language" content="en-gb">
2020-05-03 03:01:21 +03:00
2020-05-03 03:20:55 +03:00
<link href="../docs-assets/Contents.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Progress.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Navigation.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Fonts.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Base.css" rel="stylesheet" rev="stylesheet" type="text/css">
2020-05-03 03:01:21 +03:00
<script>
function togglePopup(material_id) {
var popup = document.getElementById(material_id);
popup.classList.toggle("show");
}
</script>
2020-05-03 03:20:55 +03:00
<link href="../docs-assets/Popups.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Colours.css" rel="stylesheet" rev="stylesheet" type="text/css">
2020-04-14 19:56:54 +03:00
2020-02-27 13:18:25 +02:00
</head>
2020-05-03 03:01:21 +03:00
<body class="commentary-font">
2020-03-19 02:11:25 +02:00
<nav role="navigation">
2022-04-28 19:37:28 +03:00
<h1><a href="../index.html">
2020-05-03 18:34:53 +03:00
<img src="../docs-assets/Inform.png" height=72">
2020-04-14 19:56:54 +03:00
</a></h1>
2022-04-28 19:37:28 +03:00
<ul><li><a href="../index.html">home</a></li>
2022-04-04 20:31:44 +03:00
</ul><h2>Compiler</h2><ul>
<li><a href="../structure.html">structure</a></li>
<li><a href="../inbuildn.html">inbuild</a></li>
<li><a href="../inform7n.html">inform7</a></li>
<li><a href="../intern.html">inter</a></li>
<li><a href="../services.html">services</a></li>
<li><a href="../secrets.html">secrets</a></li>
2022-04-04 20:31:44 +03:00
</ul><h2>Other Tools</h2><ul>
<li><a href="../inblorbn.html">inblorb</a></li>
<li><a href="../indocn.html">indoc</a></li>
<li><a href="../inform6.html">inform6</a></li>
<li><a href="../inpolicyn.html">inpolicy</a></li>
<li><a href="../inrtpsn.html">inrtps</a></li>
2022-04-05 14:14:27 +03:00
</ul><h2>Resources</h2><ul>
<li><a href="../extensions.html">extensions</a></li>
<li><a href="../kits.html">kits</a></li>
2022-04-04 20:31:44 +03:00
</ul><h2>Repository</h2><ul>
<li><a href="https://github.com/ganelson/inform"><img src="../docs-assets/github.png" height=18> github</a></li>
</ul><h2>Related Projects</h2><ul>
<li><a href="../../../inweb/index.html">inweb</a></li>
<li><a href="../../../intest/index.html">intest</a></li>
2020-03-19 02:11:25 +02:00
2020-04-14 19:56:54 +03:00
</ul>
2020-03-19 02:11:25 +02:00
</nav>
<main role="main">
2020-05-09 01:13:45 +03:00
<!--Weave of 'Census' generated by Inweb-->
2020-05-03 03:01:21 +03:00
<div class="breadcrumbs">
2022-04-28 19:37:28 +03:00
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../inbuildn.html">Inbuild Modules</a></li><li><a href="index.html">supervisor</a></li><li><a href="index.html#7">Chapter 7: Extension Indexing</a></li><li><b>Census</b></li></ul></div>
2020-05-09 14:10:43 +03:00
<p class="purpose">To conduct a census of all installed extensions installed.</p>
2020-02-27 13:18:25 +02:00
2020-05-09 14:10:43 +03:00
<ul class="toc"><li><a href="7-cns.html#SP1">&#167;1. Beginning</a></li><li><a href="7-cns.html#SP4">&#167;4. Census data</a></li><li><a href="7-cns.html#SP7">&#167;7. Performing the census</a></li></ul><hr class="tocbar">
2020-02-27 13:18:25 +02:00
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. Beginning. </b>Each census begins by creating an object:
2020-05-09 14:10:43 +03:00
</p>
2020-05-03 03:01:21 +03:00
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">extension_census</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">search_list</span><span class="plain-syntax">; </span><span class="comment-syntax"> of </span><span class="extract"><span class="extract-syntax">inbuild_nest</span></span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">census_data</span><span class="plain-syntax">; </span><span class="comment-syntax"> of </span><span class="extract"><span class="extract-syntax">extension_census_datum</span></span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">raw_data</span><span class="plain-syntax">; </span><span class="comment-syntax"> of </span><span class="extract"><span class="extract-syntax">inbuild_search_result</span></span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">no_census_errors</span><span class="plain-syntax">;</span>
2020-05-09 15:07:39 +03:00
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">} </span><span class="reserved-syntax">extension_census</span><span class="plain-syntax">;</span>
2020-05-09 14:10:43 +03:00
</pre>
<ul class="endnotetexts"><li>The structure extension_census is accessed in 5/es, 5/ps2, 7/ip and here.</li></ul>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. </b>Here <span class="extract"><span class="extract-syntax">proj</span></span> will be null in case (a), and will be the project just
2020-05-09 14:10:43 +03:00
compiled in case (b).
</p>
2020-05-03 03:01:21 +03:00
2020-05-09 14:10:43 +03:00
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">extension_census</span><span class="plain-syntax"> *</span><span class="function-syntax">ExtensionCensus::new</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::new</span></span>:<br/><a href="7-cns.html#SP7">&#167;7</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inform_project</span><span class="plain-syntax"> *</span><span class="identifier-syntax">proj</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">search_list</span><span class="plain-syntax"> = </span><a href="5-ps2.html#SP6" class="function-link"><span class="function-syntax">Projects::nest_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">proj</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">census_data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</span><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">raw_data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</span><span class="plain-syntax">(</span><span class="reserved-syntax">inbuild_search_result</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">no_census_errors</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
2020-05-09 14:10:43 +03:00
</pre>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>&#167;3. </b>Each census object has its own search path for nests &mdash; for case (a) the
2020-05-09 14:10:43 +03:00
shared search path, for (b) the project's search path.
</p>
2020-05-03 03:01:21 +03:00
2020-05-09 14:10:43 +03:00
<pre class="displayed-code all-displayed-code code-font">
2020-05-10 19:33:41 +03:00
<span class="identifier-syntax">pathname</span><span class="plain-syntax"> *</span><span class="function-syntax">ExtensionCensus::internal_path</span><button class="popup" onclick="togglePopup('usagePopup2')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup2">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::internal_path</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_1_1">&#167;1.1.1.1</a>, <a href="7-ip.html#SP1_1_2_1_6_2_2">&#167;1.1.2.1.6.2.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_nest</span><span class="plain-syntax"> *</span><span class="identifier-syntax">N</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><span class="plain-syntax">, </span><span class="reserved-syntax">inbuild_nest</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">search_list</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-nst.html#SP2" class="function-link"><span class="function-syntax">Nests::get_tag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><span class="plain-syntax">) == </span><span class="constant-syntax">INTERNAL_NEST_TAG</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="4-em.html#SP3" class="function-link"><span class="function-syntax">ExtensionManager::path_within_nest</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
2020-05-10 19:33:41 +03:00
<span class="identifier-syntax">pathname</span><span class="plain-syntax"> *</span><span class="function-syntax">ExtensionCensus::external_path</span><button class="popup" onclick="togglePopup('usagePopup3')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup3">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::external_path</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_1_1">&#167;1.1.1.1</a>, <a href="7-ip.html#SP1_1_2_1_6_2_2">&#167;1.1.2.1.6.2.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_nest</span><span class="plain-syntax"> *</span><span class="identifier-syntax">N</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><span class="plain-syntax">, </span><span class="reserved-syntax">inbuild_nest</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">search_list</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-nst.html#SP2" class="function-link"><span class="function-syntax">Nests::get_tag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><span class="plain-syntax">) == </span><span class="constant-syntax">EXTERNAL_NEST_TAG</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="4-em.html#SP3" class="function-link"><span class="function-syntax">ExtensionManager::path_within_nest</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
2020-02-27 13:18:25 +02:00
</pre>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>&#167;4. Census data. </b>For each inhabitant found, so to speak, an instance of <a href="7-cns.html#SP4" class="internal">extension_census_datum</a>
2020-05-09 14:10:43 +03:00
is created. (These are called ECDs below.)
2020-02-27 13:18:25 +02:00
</p>
2020-05-03 03:01:21 +03:00
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_search_result</span><span class="plain-syntax"> *</span><span class="identifier-syntax">found_as</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">overriding_a_built_in_extension</span><span class="plain-syntax">; </span><span class="comment-syntax"> not built in, but overriding one which is</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">next</span><span class="plain-syntax">; </span><span class="comment-syntax"> next one in lexicographic order</span>
2020-05-09 15:07:39 +03:00
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">} </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax">;</span>
2020-02-27 13:18:25 +02:00
</pre>
2020-05-09 14:10:43 +03:00
<ul class="endnotetexts"><li>The structure extension_census_datum is accessed in 6/hdn, 6/inc, 7/dct, 7/ip, 7/ip2 and here.</li></ul>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>&#167;5. </b>An ECD is actually a wrapper for an <a href="5-es.html#SP1" class="internal">inform_extension</a> object in disguise,
2020-05-09 14:10:43 +03:00
since the <a href="2-nst.html#SP5" class="internal">inbuild_search_result</a> found that.
2020-02-27 13:18:25 +02:00
</p>
2020-05-03 03:01:21 +03:00
<pre class="displayed-code all-displayed-code code-font">
2020-05-10 19:33:41 +03:00
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">ExtensionCensus::ecd_rubric</span><button class="popup" onclick="togglePopup('usagePopup4')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup4">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::ecd_rubric</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_6_4_1">&#167;1.1.2.1.6.4.1</a>, <a href="7-ip.html#SP1_1_2_1_6_4_4">&#167;1.1.2.1.6.4.4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-es.html#SP10" class="function-link"><span class="function-syntax">Extensions::get_rubric</span></a><span class="plain-syntax">(</span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">));</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
2020-02-27 13:18:25 +02:00
2020-05-10 19:33:41 +03:00
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ExtensionCensus::installation_region</span><button class="popup" onclick="togglePopup('usagePopup5')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup5">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::installation_region</span></span>:<br/><a href="7-cns.html#SP6">&#167;6</a><br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_6_2">&#167;1.1.2.1.6.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">) {</span>
2020-05-09 14:10:43 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-nst.html#SP2" class="function-link"><span class="function-syntax">Nests::get_tag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nest</span><span class="plain-syntax">) == </span><span class="constant-syntax">MATERIALS_NEST_TAG</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-nst.html#SP2" class="function-link"><span class="function-syntax">Nests::get_tag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nest</span><span class="plain-syntax">) == </span><span class="constant-syntax">INTERNAL_NEST_TAG</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span><span class="plain-syntax">;</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">overriding_a_built_in_extension</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">3</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
2020-05-10 19:33:41 +03:00
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ExtensionCensus::ecd_used</span><button class="popup" onclick="togglePopup('usagePopup6')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup6">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::ecd_used</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_6_2_1">&#167;1.1.2.1.6.2.1</a>, <a href="7-ip.html#SP1_1_2_1_6_4_1">&#167;1.1.2.1.6.4.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">has_historically_been_used</span><span class="plain-syntax">;</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
</pre>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>&#167;6. </b>The following give some sorting criteria, and are functions fit to be
2020-05-09 14:10:43 +03:00
handed to <span class="extract"><span class="extract-syntax">qsort</span></span>.
2020-05-03 03:01:21 +03:00
</p>
2020-02-27 13:18:25 +02:00
2020-05-03 03:01:21 +03:00
<pre class="displayed-code all-displayed-code code-font">
2020-05-10 19:33:41 +03:00
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ExtensionCensus::compare_ecd_by_title</span><button class="popup" onclick="togglePopup('usagePopup7')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup7">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::compare_ecd_by_title</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_5">&#167;1.1.2.1.5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">, </span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e1</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e2</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E1</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e1</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E2</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-es.html#SP3" class="function-link"><span class="function-syntax">Extensions::compare_by_title</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E2</span><span class="plain-syntax">, </span><span class="identifier-syntax">E1</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
2020-05-10 19:33:41 +03:00
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ExtensionCensus::compare_ecd_by_author</span><button class="popup" onclick="togglePopup('usagePopup8')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup8">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::compare_ecd_by_author</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_5">&#167;1.1.2.1.5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">, </span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e1</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e2</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E1</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e1</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E2</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-es.html#SP3" class="function-link"><span class="function-syntax">Extensions::compare_by_author</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E2</span><span class="plain-syntax">, </span><span class="identifier-syntax">E1</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
2020-05-10 19:33:41 +03:00
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ExtensionCensus::compare_ecd_by_installation</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::compare_ecd_by_installation</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_5">&#167;1.1.2.1.5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">, </span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e1</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e2</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">);</span>
2020-05-09 14:10:43 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">d</span><span class="plain-syntax"> = </span><a href="7-cns.html#SP5" class="function-link"><span class="function-syntax">ExtensionCensus::installation_region</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e1</span><span class="plain-syntax">) -</span>
<span class="plain-syntax"> </span><a href="7-cns.html#SP5" class="function-link"><span class="function-syntax">ExtensionCensus::installation_region</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e2</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">d</span><span class="plain-syntax"> != </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">d</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E1</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e1</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E2</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-es.html#SP3" class="function-link"><span class="function-syntax">Extensions::compare_by_edition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E1</span><span class="plain-syntax">, </span><span class="identifier-syntax">E2</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
2020-05-10 19:33:41 +03:00
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ExtensionCensus::compare_ecd_by_date</span><button class="popup" onclick="togglePopup('usagePopup10')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup10">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::compare_ecd_by_date</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_5">&#167;1.1.2.1.5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">, </span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e1</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e2</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E1</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e1</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E2</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-es.html#SP3" class="function-link"><span class="function-syntax">Extensions::compare_by_date</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E1</span><span class="plain-syntax">, </span><span class="identifier-syntax">E2</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
2020-05-10 19:33:41 +03:00
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ExtensionCensus::compare_ecd_by_length</span><button class="popup" onclick="togglePopup('usagePopup11')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup11">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::compare_ecd_by_length</span></span>:<br/>Index Pages - <a href="7-ip.html#SP1_1_2_1_5">&#167;1.1.2.1.5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">, </span><span class="reserved-syntax">const</span><span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">) {</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e1</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">e2</span><span class="plain-syntax"> = *((</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> **) </span><span class="identifier-syntax">ecd2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E1</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e1</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E2</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">e2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-es.html#SP3" class="function-link"><span class="function-syntax">Extensions::compare_by_length</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E1</span><span class="plain-syntax">, </span><span class="identifier-syntax">E2</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
</pre>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>&#167;7. Performing the census. </b>For some reason a census often makes a good story (cf. Luke 2:1-5), but here
2020-05-09 14:10:43 +03:00
there's disappointingly little to tell, because the work is all done by a
single call to <a href="2-nst.html#SP7" class="internal">Nests::search_for</a>.
2020-05-03 03:01:21 +03:00
</p>
2020-02-27 13:18:25 +02:00
2020-05-03 03:01:21 +03:00
<pre class="displayed-code all-displayed-code code-font">
2020-05-09 14:10:43 +03:00
<span class="reserved-syntax">extension_census</span><span class="plain-syntax"> *</span><span class="function-syntax">ExtensionCensus::perform</span><button class="popup" onclick="togglePopup('usagePopup12')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup12">Usage of <span class="code-font"><span class="function-syntax">ExtensionCensus::perform</span></span>:<br/>The Mini-Website - <a href="7-tm.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inform_project</span><span class="plain-syntax"> *</span><span class="identifier-syntax">proj</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax"> = </span><a href="7-cns.html#SP2" class="function-link"><span class="function-syntax">ExtensionCensus::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">proj</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="identifier-syntax">req</span><span class="plain-syntax"> = </span><a href="2-rqr.html#SP2" class="function-link"><span class="function-syntax">Requirements::anything_of_genre</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">extension_genre</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-nst.html#SP7" class="function-link"><span class="function-syntax">Nests::search_for</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">req</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">search_list</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">raw_data</span><span class="plain-syntax">);</span>
2020-05-03 03:01:21 +03:00
2020-05-09 14:10:43 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_search_result</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</span><span class="plain-syntax">, </span><span class="reserved-syntax">inbuild_search_result</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">raw_data</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">no_census_errors</span><span class="plain-syntax"> += </span><span class="identifier-syntax">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">errors_reading_source_text</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">overridden_by_an_extension_already_found</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="7-cns.html#SP7_1" class="named-paragraph-link"><span class="named-paragraph">See if already known from existing data</span><span class="named-paragraph-number">7.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">overridden_by_an_extension_already_found</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="7-cns.html#SP7_2" class="named-paragraph-link"><span class="named-paragraph">Add to the census data</span><span class="named-paragraph-number">7.2</span></a></span><span class="plain-syntax">;</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax"> }</span>
2020-05-09 14:10:43 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">;</span>
2020-05-03 03:01:21 +03:00
<span class="plain-syntax">}</span>
</pre>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP7_1" class="paragraph-anchor"></a><b>&#167;7.1. </b>Recall that the higher-priority materials and external nests are scanned
2020-05-09 14:10:43 +03:00
first, so if we find that our new extension has the same title and author as
one already known, it must be one that is overridden.
2020-05-03 03:01:21 +03:00
</p>
2020-02-27 13:18:25 +02:00
2020-05-09 14:10:43 +03:00
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">See if already known from existing data</span><span class="named-paragraph-number">7.1</span></span><span class="comment-syntax"> =</span>
2020-05-03 03:01:21 +03:00
</p>
2020-02-27 13:18:25 +02:00
2020-05-03 03:01:21 +03:00
<pre class="displayed-code all-displayed-code code-font">
2020-05-09 14:10:43 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">other</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">other</span><span class="plain-syntax">, </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">census_data</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="2-wrk.html#SP9" class="function-link"><span class="function-syntax">Works::match</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">R</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">edition</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">work</span><span class="plain-syntax">,</span>
2020-05-09 14:10:43 +03:00
<span class="plain-syntax"> </span><span class="identifier-syntax">other</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">copy</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">edition</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">work</span><span class="plain-syntax">)) &amp;&amp;</span>
<span class="plain-syntax"> ((</span><a href="2-nst.html#SP2" class="function-link"><span class="function-syntax">Nests::get_tag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">other</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nest</span><span class="plain-syntax">) == </span><span class="constant-syntax">INTERNAL_NEST_TAG</span><span class="plain-syntax">) ||</span>
<span class="plain-syntax"> (</span><a href="2-nst.html#SP2" class="function-link"><span class="function-syntax">Nests::get_tag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">R</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nest</span><span class="plain-syntax">) == </span><span class="constant-syntax">INTERNAL_NEST_TAG</span><span class="plain-syntax">))) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">other</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">overriding_a_built_in_extension</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">overridden_by_an_extension_already_found</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
2020-05-03 03:01:21 +03:00
</pre>
2020-05-09 14:10:43 +03:00
<ul class="endnotetexts"><li>This code is used in <a href="7-cns.html#SP7">&#167;7</a>.</li></ul>
2020-08-18 20:59:08 +03:00
<p class="commentary firstcommentary"><a id="SP7_2" class="paragraph-anchor"></a><b>&#167;7.2. </b>Assuming the new extension was not overridden in this way, we come here.
2020-05-09 14:10:43 +03:00
Because we didn't check the version number text for validity, it might
through being invalid be longer than we expect: in case this is so, we
truncate it.
2020-05-03 03:01:21 +03:00
</p>
2020-02-27 13:18:25 +02:00
2020-05-09 14:10:43 +03:00
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Add to the census data</span><span class="named-paragraph-number">7.2</span></span><span class="comment-syntax"> =</span>
2020-05-03 03:01:21 +03:00
</p>
2020-02-27 13:18:25 +02:00
2020-05-03 03:01:21 +03:00
<pre class="displayed-code all-displayed-code code-font">
2020-05-09 14:10:43 +03:00
<span class="plain-syntax"> </span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ecd</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">extension_census_datum</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">found_as</span><span class="plain-syntax"> = </span><span class="identifier-syntax">R</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">overriding_a_built_in_extension</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">ecd</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
2020-05-03 03:01:21 +03:00
</pre>
2020-05-09 14:10:43 +03:00
<ul class="endnotetexts"><li>This code is used in <a href="7-cns.html#SP7">&#167;7</a>.</li></ul>
2020-05-03 03:01:21 +03:00
<nav role="progress"><div class="progresscontainer">
2020-05-09 14:10:43 +03:00
<ul class="progressbar"><li class="progressprev"><a href="7-dct.html">&#10094;</a></li><li class="progresschapter"><a href="P-wtmd.html">P</a></li><li class="progresschapter"><a href="1-sm.html">1</a></li><li class="progresschapter"><a href="2-gnr.html">2</a></li><li class="progresschapter"><a href="3-bg.html">3</a></li><li class="progresschapter"><a href="4-em.html">4</a></li><li class="progresschapter"><a href="5-es.html">5</a></li><li class="progresschapter"><a href="6-st.html">6</a></li><li class="progresscurrentchapter">7</li><li class="progresssection"><a href="7-tm.html">tm</a></li><li class="progresssection"><a href="7-dct.html">dct</a></li><li class="progresscurrent">cns</li><li class="progresssection"><a href="7-ip.html">ip</a></li><li class="progresssection"><a href="7-ip2.html">ip2</a></li><li class="progressnext"><a href="7-ip.html">&#10095;</a></li></ul></div>
2020-05-03 03:01:21 +03:00
</nav><!--End of weave-->
2020-02-27 13:18:25 +02:00
2020-05-03 03:01:21 +03:00
</main>
</body>
</html>
2020-02-27 13:18:25 +02:00