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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Commands Element</title>
<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
<meta name="viewport" content="width=device-width initial-scale=1">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Language" content="en-gb">
<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">
<script>
function togglePopup(material_id) {
var popup = document.getElementById(material_id);
popup.classList.toggle("show");
}
</script>
<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">
</head>
<body class="commentary-font">
<nav role="navigation">
<h1><a href="../index.html">
<img src="../docs-assets/Inform.png" height=72">
</a></h1>
<ul><li><a href="../compiler.html">compiler tools</a></li>
<li><a href="../other.html">other tools</a></li>
<li><a href="../extensions.html">extensions and kits</a></li>
<li><a href="../units.html">unit test tools</a></li>
</ul><h2>Compiler Webs</h2><ul>
<li><a href="../inbuild/index.html">inbuild</a></li>
<li><a href="../inform7/index.html">inform7</a></li>
<li><a href="../inter/index.html">inter</a></li>
</ul><h2>Inbuild Modules</h2><ul>
<li><a href="../supervisor-module/index.html">supervisor</a></li>
</ul><h2>Inform7 Modules</h2><ul>
<li><a href="../core-module/index.html">core</a></li>
<li><a href="../assertions-module/index.html">assertions</a></li>
<li><a href="../values-module/index.html">values</a></li>
<li><a href="../knowledge-module/index.html">knowledge</a></li>
<li><a href="../imperative-module/index.html">imperative</a></li>
<li><a href="../runtime-module/index.html">runtime</a></li>
<li><a href="../if-module/index.html">if</a></li>
<li><a href="../multimedia-module/index.html">multimedia</a></li>
<li><a href="index.html"><span class="selectedlink">index</span></a></li>
</ul><h2>Inter Modules</h2><ul>
<li><a href="../bytecode-module/index.html">bytecode</a></li>
<li><a href="../building-module/index.html">building</a></li>
<li><a href="../pipeline-module/index.html">pipeline</a></li>
<li><a href="../final-module/index.html">final</a></li>
</ul><h2>Services</h2><ul>
<li><a href="../arch-module/index.html">arch</a></li>
<li><a href="../calculus-module/index.html">calculus</a></li>
<li><a href="../html-module/index.html">html</a></li>
<li><a href="../inflections-module/index.html">inflections</a></li>
<li><a href="../kinds-module/index.html">kinds</a></li>
<li><a href="../linguistics-module/index.html">linguistics</a></li>
<li><a href="../problems-module/index.html">problems</a></li>
<li><a href="../syntax-module/index.html">syntax</a></li>
<li><a href="../words-module/index.html">words</a></li>
<li><a href="../../../inweb/docs/foundation-module/index.html">foundation</a></li>
</ul>
</nav>
<main role="main">
<!--Weave of 'Commands Element' generated by Inweb-->
<div class="breadcrumbs">
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inter Modules</a></li><li><a href="index.html">index</a></li><li><a href="index.html#3">Chapter 3: Elements</a></li><li><b>Commands Element</b></li></ul></div>
<p class="purpose">To write the Commands element (Cm) in the index.</p>
<ul class="toc"><li><a href="3-ce3.html#SP2">&#167;2. Indexing grammar lines</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::render</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">CommandsElement::render</span></span>:<br/>The Periodic Table - <a href="3-tpt.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">index_session</span><span class="plain-syntax"> *</span><span class="identifier-syntax">session</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">localisation_dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">LD</span><span class="plain-syntax"> = </span><a href="1-ia.html#SP6" class="function-link"><span class="function-syntax">Indexing::get_localisation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">session</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="1-ia.html#SP6" class="function-link"><span class="function-syntax">Indexing::get_tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">session</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entries</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</span><span class="plain-syntax">(</span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce3.html#SP1_1" class="named-paragraph-link"><span class="named-paragraph">Create the entries for the command list</span><span class="named-paragraph-number">1.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sorted</span><span class="plain-syntax"> = </span><a href="3-ce3.html#SP1_4" class="function-link"><span class="function-syntax">CommandsElement::sort</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">entries</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">head_letter</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">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cie</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">cie</span><span class="plain-syntax">, </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">sorted</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">Str::get_first_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">) != </span><span class="identifier-syntax">head_letter</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">head_letter</span><span class="plain-syntax">) </span><span class="identifier-syntax">HTML_TAG</span><span class="plain-syntax">(</span><span class="string-syntax">"br"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">head_letter</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::get_first_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce3.html#SP1_5" class="named-paragraph-link"><span class="named-paragraph">Render an index entry from the sorted list</span><span class="named-paragraph-number">1.5</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP1_1" class="paragraph-anchor"></a><b>&#167;1.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Create the entries for the command list</span><span class="named-paragraph-number">1.1</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterPackage::from_URL</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"/main/completion/grammar"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entry</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_SUBPACKAGES</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"_command_grammar"</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">Metadata::read_optional_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^is_command"</span><span class="plain-syntax">)) &amp;&amp;</span>
<span class="plain-syntax"> (</span><span class="identifier-syntax">InterTree::no_subpackages</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"_cg_line"</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce3.html#SP1_1_1" class="named-paragraph-link"><span class="named-paragraph">Create entry for this command</span><span class="named-paragraph-number">1.1.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP1_3" class="function-link"><span class="function-syntax">CommandsElement::make_direction_entry</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">entries</span><span class="plain-syntax">);</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce3.html#SP1">&#167;1</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP1_1_1" class="paragraph-anchor"></a><b>&#167;1.1.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Create entry for this command</span><span class="named-paragraph-number">1.1.1</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">main_command</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^command"</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">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">main_command</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">main_command</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"0"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP1_3" class="function-link"><span class="function-syntax">CommandsElement::make_entry</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">main_command</span><span class="plain-syntax">, </span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="constant-syntax">NORMAL_COMMAND</span><span class="plain-syntax">, </span><span class="identifier-syntax">entries</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">alias</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_SUBPACKAGES</span><span class="plain-syntax">(</span><span class="identifier-syntax">alias</span><span class="plain-syntax">, </span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"_cg_alias"</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">alias_command</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::required_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">alias</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^alias"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP1_3" class="function-link"><span class="function-syntax">CommandsElement::make_entry</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">alias_command</span><span class="plain-syntax">, </span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="constant-syntax">ALIAS_COMMAND</span><span class="plain-syntax">, </span><span class="identifier-syntax">entries</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce3.html#SP1_1">&#167;1.1</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP1_2" class="paragraph-anchor"></a><b>&#167;1.2. </b>Entries in the list correspond to the headwords of commands which can be typed
at runtime, like QUIT or INVENTORY. For indexing purposes, we divide these headwords
as follows:
</p>
<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">NORMAL_COMMAND</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">ALIAS_COMMAND</span><span class="plain-syntax"> </span><span class="constant-syntax">2</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">OUT_OF_WORLD_COMMAND</span><span class="plain-syntax"> </span><span class="constant-syntax">3</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">TESTING_COMMAND</span><span class="plain-syntax"> </span><span class="constant-syntax">4</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">BARE_DIRECTION_COMMAND</span><span class="plain-syntax"> </span><span class="constant-syntax">5</span>
</pre>
<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">command_index_entry</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">nature</span><span class="plain-syntax">; </span><span class="comment-syntax"> one of the above values</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">command_headword</span><span class="plain-syntax">; </span><span class="comment-syntax"> text of command headword, such as "REMOVE"</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cg_indexed</span><span class="plain-syntax">; </span><span class="comment-syntax"> ...leading to...</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">next_alphabetically</span><span class="plain-syntax">; </span><span class="comment-syntax"> next in linked list</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">;</span>
<span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sorted_command_index</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">; </span><span class="comment-syntax"> in alphabetical order of </span><span class="extract"><span class="extract-syntax">text</span></span>
</pre>
<ul class="endnotetexts"><li>The structure command_index_entry is private to this section.</li></ul>
<p class="commentary firstcommentary"><a id="SP1_3" class="paragraph-anchor"></a><b>&#167;1.3. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::make_test_entry</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">, </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entries</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cie</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">t</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nature</span><span class="plain-syntax"> = </span><span class="constant-syntax">TESTING_COMMAND</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">cg_indexed</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">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</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">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">cie</span><span class="plain-syntax">, </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">entries</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::make_entry</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">CommandsElement::make_entry</span></span>:<br/><a href="3-ce3.html#SP1_1_1">&#167;1.1.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cg_pack</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">nature</span><span class="plain-syntax">, </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entries</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cie</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">headword</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nature</span><span class="plain-syntax"> = </span><span class="identifier-syntax">nature</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">cg_indexed</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</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">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">cie</span><span class="plain-syntax">, </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">entries</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::make_direction_entry</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">CommandsElement::make_direction_entry</span></span>:<br/><a href="3-ce3.html#SP1_1">&#167;1.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entries</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cie</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"0"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nature</span><span class="plain-syntax"> = </span><span class="constant-syntax">BARE_DIRECTION_COMMAND</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">cg_indexed</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">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</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">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">cie</span><span class="plain-syntax">, </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">entries</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP1_4" class="paragraph-anchor"></a><b>&#167;1.4. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="function-syntax">CommandsElement::sort</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">CommandsElement::sort</span></span>:<br/><a href="3-ce3.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entries</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cie</span><span class="plain-syntax">, *</span><span class="identifier-syntax">list_start</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">cie</span><span class="plain-syntax">, </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">entries</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">list_start</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) { </span><span class="identifier-syntax">list_start</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie</span><span class="plain-syntax">; </span><span class="reserved-syntax">continue</span><span class="plain-syntax">; }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cie2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">list_start</span><span class="plain-syntax">, *</span><span class="identifier-syntax">last_cie2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cie2</span><span class="plain-syntax"> &amp;&amp; (</span><span class="identifier-syntax">Str::cmp</span><span class="plain-syntax">(</span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">cie2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">last_cie2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cie2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</span><span class="plain-syntax">;</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">last_cie2</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">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</span><span class="plain-syntax"> = </span><span class="identifier-syntax">list_start</span><span class="plain-syntax">; </span><span class="identifier-syntax">list_start</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">last_cie2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie</span><span class="plain-syntax">; </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sorted</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</span><span class="plain-syntax">(</span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cie</span><span class="plain-syntax"> = </span><span class="identifier-syntax">list_start</span><span class="plain-syntax">; </span><span class="identifier-syntax">cie</span><span class="plain-syntax">; </span><span class="identifier-syntax">cie</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">cie</span><span class="plain-syntax">, </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">sorted</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">sorted</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP1_5" class="paragraph-anchor"></a><b>&#167;1.5. </b>With those lengthy digressions done, back to the actual indexing:
</p>
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Render an index entry from the sorted list</span><span class="named-paragraph-number">1.5</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">cg_indexed</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">nature</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">NORMAL_COMMAND:</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP2" class="function-link"><span class="function-syntax">CommandsElement::index_normal</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ALIAS_COMMAND:</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP2" class="function-link"><span class="function-syntax">CommandsElement::index_alias</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OUT_OF_WORLD_COMMAND:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_colour</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"800000"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;quot;%S&amp;quot;, "</span><span class="plain-syntax">, </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::italic</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.Cm.Command"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_colour</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_TAG</span><span class="plain-syntax">(</span><span class="string-syntax">"br"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">TESTING_COMMAND:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_colour</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"800000"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;quot;%S&amp;quot;, "</span><span class="plain-syntax">, </span><span class="identifier-syntax">cie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::italic</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.Cm.TestingCommand"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_colour</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_TAG</span><span class="plain-syntax">(</span><span class="string-syntax">"br"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">BARE_DIRECTION_COMMAND:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;quot;[direction]&amp;quot; - "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::italic</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.Cm.DirectionCommand"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_TAG</span><span class="plain-syntax">(</span><span class="string-syntax">"br"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce3.html#SP1">&#167;1</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. Indexing grammar lines. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::index_normal</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">CommandsElement::index_normal</span></span>:<br/><a href="3-ce3.html#SP1_5">&#167;1.5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">localisation_dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">LD</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entry</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_SUBPACKAGES</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"_cg_line"</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP2" class="function-link"><span class="function-syntax">CommandsElement::index_grammar_line</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">entry</span><span class="plain-syntax">, </span><span class="identifier-syntax">headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::index_alias</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">CommandsElement::index_alias</span></span>:<br/><a href="3-ce3.html#SP1_5">&#167;1.5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">localisation_dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">LD</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;quot;%S&amp;quot;, "</span><span class="plain-syntax">, </span><span class="identifier-syntax">headword</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::italic</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.Cm.Alias"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">" &amp;quot;%S&amp;quot;"</span><span class="plain-syntax">, </span><span class="identifier-syntax">Metadata::required_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^command"</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><a href="2-iu.html#SP2" class="function-link"><span class="function-syntax">IndexUtilities::link_package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">cg_pack</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_TAG</span><span class="plain-syntax">(</span><span class="string-syntax">"br"</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::index_grammar_line</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">CommandsElement::index_grammar_line</span></span>:<br/>Grouped Element - <a href="3-ge2.html#SP2_1_3">&#167;2.1.3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cgl</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">localisation_dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">LD</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an_s</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">cgl</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^action"</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">an_s</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterPackage::container</span><span class="plain-syntax">(</span><span class="identifier-syntax">an_s</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">definition</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">oow</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">Metadata::read_optional_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^out_of_world"</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">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">headword</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><a href="2-iu.html#SP5" class="function-link"><span class="function-syntax">IndexUtilities::anchor</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">headword</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">oow</span><span class="plain-syntax">) </span><span class="identifier-syntax">HTML::begin_colour</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"800000"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;quot;"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="3-te2.html#SP3" class="function-link"><span class="function-syntax">TokensElement::verb_definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">Metadata::optional_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">cgl</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^text"</span><span class="plain-syntax">),</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;quot;"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-iu.html#SP2" class="function-link"><span class="function-syntax">IndexUtilities::link_package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">cgl</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">" - &lt;i&gt;%S&lt;/i&gt;"</span><span class="plain-syntax">, </span><span class="identifier-syntax">Metadata::required_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^name"</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><a href="2-iu.html#SP4" class="function-link"><span class="function-syntax">IndexUtilities::detail_link</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="string-syntax">"A"</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">Metadata::read_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"action_id"</span><span class="plain-syntax">), </span><span class="identifier-syntax">TRUE</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">Metadata::read_optional_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">cgl</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^reversed"</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">" "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::italic</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.Cm.Reversed"</span><span class="plain-syntax">);</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">oow</span><span class="plain-syntax">) </span><span class="identifier-syntax">HTML::end_colour</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_TAG</span><span class="plain-syntax">(</span><span class="string-syntax">"br"</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
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