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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="../codegen-module/index.html">codegen</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#SP4">&#167;4. Indexing by grammar</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#SP3">&#167;3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-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_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-ii.html#SP1" class="function-link"><span class="function-syntax">InterpretIndex::get_tree</span></a><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">vie</span><span class="plain-syntax">, *</span><span class="identifier-syntax">vie2</span><span class="plain-syntax">, *</span><span class="identifier-syntax">last_vie2</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="reserved-syntax">int</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="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">Inter::Packages::by_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_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wanted</span><span class="plain-syntax"> = </span><span class="identifier-syntax">PackageTypes::get</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">"_command_grammar"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">D</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Inter::Packages::definition</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_INTER_CHILDREN</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="identifier-syntax">data</span><span class="plain-syntax">[</span><span class="identifier-syntax">ID_IFLD</span><span class="plain-syntax">] == </span><span class="identifier-syntax">PACKAGE_IST</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="identifier-syntax">Inter::Package::defined_by_frame</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</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">Inter::Packages::type</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">) == </span><span class="identifier-syntax">wanted</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><a href="3-ce3.html#SP1" class="function-link"><span class="function-syntax">CommandsElement::no_lines</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">entry</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">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::read_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#SP3" class="function-link"><span class="function-syntax">CommandsElement::vie_new_from</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="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wanted_i</span><span class="plain-syntax"> = </span><span class="identifier-syntax">PackageTypes::get</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">"_cg_alias"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_INTER_CHILDREN</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</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">B</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="identifier-syntax">data</span><span class="plain-syntax">[</span><span class="identifier-syntax">ID_IFLD</span><span class="plain-syntax">] == </span><span class="identifier-syntax">PACKAGE_IST</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="identifier-syntax">Inter::Package::defined_by_frame</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</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">Inter::Packages::type</span><span class="plain-syntax">(</span><span class="identifier-syntax">alias</span><span class="plain-syntax">) == </span><span class="identifier-syntax">wanted_i</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::read_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#SP3" class="function-link"><span class="function-syntax">CommandsElement::vie_new_from</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="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP3" class="function-link"><span class="function-syntax">CommandsElement::direction_verb</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">vie</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">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">vie</span><span class="plain-syntax">; </span><span class="reserved-syntax">continue</span><span class="plain-syntax">; }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">vie2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">list_start</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">last_vie2</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">vie2</span><span class="plain-syntax"> &amp;&amp; (</span><span class="identifier-syntax">Str::cmp</span><span class="plain-syntax">(</span><span class="identifier-syntax">vie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_headword</span><span class="plain-syntax">, </span><span class="identifier-syntax">vie2</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_vie2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">vie2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">vie2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">vie2</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_vie2</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">vie</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">vie</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_vie2</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</span><span class="plain-syntax"> = </span><span class="identifier-syntax">vie</span><span class="plain-syntax">; </span><span class="identifier-syntax">vie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_alphabetically</span><span class="plain-syntax"> = </span><span class="identifier-syntax">vie2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">vie</span><span class="plain-syntax"> = </span><span class="identifier-syntax">list_start</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="identifier-syntax">vie</span><span class="plain-syntax">; </span><span class="identifier-syntax">vie</span><span class="plain-syntax"> = </span><span class="identifier-syntax">vie</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="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">vie</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">vie</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="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cg</span><span class="plain-syntax"> = </span><span class="identifier-syntax">vie</span><span class="plain-syntax">-&gt;</span><span class="identifier-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">vie</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#SP4" 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</span><span class="plain-syntax">, </span><span class="identifier-syntax">vie</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="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#SP4" 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</span><span class="plain-syntax">, </span><span class="identifier-syntax">vie</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="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;, &lt;i&gt;a command for controlling play&lt;/i&gt;"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">vie</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">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;, &lt;i&gt;a testing command not available "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"in the final game&lt;/i&gt;"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">vie</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">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; - &lt;i&gt;going&lt;/i&gt;"</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="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">CommandsElement::no_lines</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</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">N</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</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">wanted</span><span class="plain-syntax"> = </span><span class="identifier-syntax">PackageTypes::get</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">"_cg_line"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">D</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Inter::Packages::definition</span><span class="plain-syntax">(</span><span class="identifier-syntax">cg</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_INTER_CHILDREN</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="identifier-syntax">data</span><span class="plain-syntax">[</span><span class="identifier-syntax">ID_IFLD</span><span class="plain-syntax">] == </span><span class="identifier-syntax">PACKAGE_IST</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="identifier-syntax">Inter::Package::defined_by_frame</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</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">Inter::Packages::type</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">) == </span><span class="identifier-syntax">wanted</span><span class="plain-syntax">) </span><span class="identifier-syntax">N</span><span class="plain-syntax">++;</span>
<span class="plain-syntax"> }</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">N</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. </b>The following modest structure is used for the indexing of command verbs,
and is too deeply boring to comment upon. These are the headwords of commands
which can be typed at run-time, like QUIT or INVENTORY. For indexing purposes,
we divide these headwords into five "natures":
</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="SP3" class="paragraph-anchor"></a><b>&#167;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::test_verb</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="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">vie</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">vie</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">vie</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">vie</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">vie</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">vie</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="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="function-syntax">CommandsElement::vie_new_from</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::vie_new_from</span></span>:<br/><a href="3-ce3.html#SP1">&#167;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</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="plain-syntax"> </span><span class="reserved-syntax">command_index_entry</span><span class="plain-syntax"> *</span><span class="identifier-syntax">vie</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">vie</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">vie</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">vie</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">cg_indexed</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cg</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">vie</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="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">vie</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::direction_verb</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::direction_verb</span></span>:<br/><a href="3-ce3.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</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">vie</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">vie</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">vie</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">vie</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">vie</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>
</pre>
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>&#167;4. Indexing by grammar. </b>This is the more obvious form of indexing: we show the grammar lines which
make up an individual CGL. (For instance, this is used in the Actions index
to show the grammar for an individual command word, by calling the routine
below for that command word's CG.) Such an index list is done in sorted
order, so that the order of appearance in the index corresponds to the
order of parsing &mdash; this is what the reader of the index is interested in.
</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('usagePopup4')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup4">Usage of <span class="code-font"><span class="function-syntax">CommandsElement::index_normal</span></span>:<br/><a href="3-ce3.html#SP1">&#167;1</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</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="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wanted</span><span class="plain-syntax"> = </span><span class="identifier-syntax">PackageTypes::get</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">"_cg_line"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">D</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Inter::Packages::definition</span><span class="plain-syntax">(</span><span class="identifier-syntax">cg</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_INTER_CHILDREN</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="identifier-syntax">data</span><span class="plain-syntax">[</span><span class="identifier-syntax">ID_IFLD</span><span class="plain-syntax">] == </span><span class="identifier-syntax">PACKAGE_IST</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="identifier-syntax">Inter::Package::defined_by_frame</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</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">Inter::Packages::type</span><span class="plain-syntax">(</span><span class="identifier-syntax">entry</span><span class="plain-syntax">) == </span><span class="identifier-syntax">wanted</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><a href="3-ce3.html#SP4" class="function-link"><span class="function-syntax">CommandsElement::cgl_index_normal</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="plain-syntax"> }</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::cgl_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::cgl_index_normal</span></span>:<br/>Grouped Element - <a href="3-ge2.html#SP1_2">&#167;1.2</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="identifier-syntax">text_stream</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">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::read_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">Inter::Packages::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-ifs.html#SP3" class="function-link"><span class="function-syntax">Index::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#SP1" 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::read_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><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">at</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">cgl</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^at"</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">at</span><span class="plain-syntax"> &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><a href="2-ifs.html#SP1" class="function-link"><span class="function-syntax">Index::link</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</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"</span><span class="plain-syntax">, </span><span class="identifier-syntax">Metadata::read_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-ifs.html#SP2" class="function-link"><span class="function-syntax">Index::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="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">" &lt;i&gt;reversed&lt;/i&gt;"</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;"</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>
<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">&#167;1</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</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="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;quot;%S&amp;quot;, &lt;i&gt;same as&lt;/i&gt; &amp;quot;%S&amp;quot;"</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">Metadata::read_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">cg</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">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">at</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">cg</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^at"</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">at</span><span class="plain-syntax"> &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><a href="2-ifs.html#SP1" class="function-link"><span class="function-syntax">Index::link</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</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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