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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>Actions</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">
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<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="../overview.html">
<img src="../docs-assets/Inform.png" height=72">
</a></h1>
<ul><li><a href="../overview.html">home</a></li>
</ul><h2>Compiler</h2><ul>
<li><a href="../structure.html">structure</a></li>
<li><a href="../inbuildn.html">inbuild</a></li>
<li><a href="../inform7n.html">inform7</a></li>
<li><a href="../intern.html">inter</a></li>
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</ul><h2>Repository</h2><ul>
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</ul><h2>Related Projects</h2><ul>
<li><a href="../../../inweb/index.html">inweb</a></li>
<li><a href="../../../intest/index.html">intest</a></li>
</ul>
</nav>
<main role="main">
<!--Weave of 'Actions' generated by Inweb-->
<div class="breadcrumbs">
<ul class="crumbs"><li><a href="../overview.html">Home</a></li><li><a href="../inform7n.html">Inform7</a></li><li><a href="index.html">if</a></li><li><a href="index.html#4">Chapter 4: Actions</a></li><li><b>Actions</b></li></ul></div>
<p class="purpose">Each different sort of impulse to do something is an "action name".</p>
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. </b>An action is an impulse to do something within the model world, and there
will be many different sorts of impulse which a person may have: "going"
[i.e. somewhere], for example, or "wearing" [i.e. something].
</p>
<p class="commentary">Each of these different sorts of action is represented by an instance of
<a href="4-act.html#SP1" class="internal">action_name</a>, and each in turn corresponds to an instance of the enumerated
kind <span class="extract"><span class="extract-syntax">K_action_name</span></span> at run-time.
</p>
<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">action_name</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">action_naming_data</span><span class="plain-syntax"> </span><span class="identifier-syntax">naming_data</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">action_semantics</span><span class="plain-syntax"> </span><span class="identifier-syntax">semantics</span><span class="plain-syntax">; </span><span class="comment-syntax"> see </span><a href="4-as.html" class="internal">Action Semantics</a>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">check_rules</span><span class="plain-syntax">; </span><span class="comment-syntax"> rulebooks private to this action</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">carry_out_rules</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">report_rules</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">shared_variable_set</span><span class="plain-syntax"> *</span><span class="identifier-syntax">action_variables</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">cg_line</span><span class="plain-syntax"> *</span><span class="identifier-syntax">command_parser_grammar_producing_this</span><span class="plain-syntax">; </span><span class="comment-syntax"> if any</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">action_compilation_data</span><span class="plain-syntax"> </span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">action_name</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>The structure action_name is accessed in 4/ap, 4/as, 4/av, 4/ann, 4/anl, 4/nap, 4/gng, 5/pp, 5/cg, 5/cgl, 5/ts and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. </b>Note that we notify the <span class="extract"><span class="extract-syntax">K_action_name</span></span> kind that a new enumerated value
for it exists; we don't need to record the reply (i.e. the number used as
this value at run-time) because it will be the same as the allocation ID
for the <a href="4-act.html#SP1" class="internal">action_name</a> structure in all cases.
</p>
<p class="commentary">As a historical note, until 2021 this code was still capable of generating
actions managed entirely by Inter code and without I7 rulebooks: something
which had not actually been done since around 2008.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="function-syntax">Actions::act_new</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">Actions::act_new</span></span>:<br/>Actions Plugin - <a href="4-ap.html#SP9">&#167;9</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">action_name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Kinds::Behaviour::new_enumerated_value</span><span class="plain-syntax">(</span><span class="identifier-syntax">K_action_name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="4-ann.html#SP3" class="function-link"><span class="function-syntax">ActionNameNames::baptise</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">); </span><span class="comment-syntax"> which sets its </span><span class="extract"><span class="extract-syntax">naming_data</span></span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">semantics</span><span class="plain-syntax"> = </span><a href="4-as.html#SP2" class="function-link"><span class="function-syntax">ActionSemantics::default</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_parser_grammar_producing_this</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">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">compilation_data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RTActions::new_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">check_rules</span><span class="plain-syntax"> = </span><a href="4-act.html#SP3" class="function-link"><span class="function-syntax">Actions::new_rulebook</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">CHECK_RB_HL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">carry_out_rules</span><span class="plain-syntax"> = </span><a href="4-act.html#SP3" class="function-link"><span class="function-syntax">Actions::new_rulebook</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">CARRY_OUT_RB_HL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">report_rules</span><span class="plain-syntax"> = </span><a href="4-act.html#SP3" class="function-link"><span class="function-syntax">Actions::new_rulebook</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">REPORT_RB_HL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">action_variables</span><span class="plain-syntax"> = </span><span class="identifier-syntax">SharedVariables::new_set</span><span class="plain-syntax">(</span><span class="identifier-syntax">RTActions::variables_id</span><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOGIF</span><span class="plain-syntax">(</span><span class="identifier-syntax">ACTION_CREATIONS</span><span class="plain-syntax">, </span><span class="string-syntax">"Created action: %W\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</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">an</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>&#167;3. </b>Rulebooks such as "check" would become far too large if they accumulated
every rule for checking anything; and so they are "fragmented" into individual
rulebooks per action, such as "check waiting" or "check dropping".
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="function-syntax">Actions::new_rulebook</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">Actions::new_rulebook</span></span>:<br/><a href="4-act.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">RB</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><a href="4-ann.html#SP10" class="function-link"><span class="function-syntax">ActionNameNames::rulebook_name</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">RB</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">prefix_length</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Wordings::length</span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">) -</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Wordings::length</span><span class="plain-syntax">(</span><a href="4-ann.html#SP5" class="function-link"><span class="function-syntax">ActionNameNames::tensed</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">IS_TENSE</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Rulebooks::new_automatic</span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_action_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">NO_OUTCOME</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">, </span><span class="identifier-syntax">prefix_length</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Hierarchy::make_package_in</span><span class="plain-syntax">(</span><span class="identifier-syntax">RB</span><span class="plain-syntax">, </span><span class="identifier-syntax">RTActions::package</span><span class="plain-syntax">(</span><span class="identifier-syntax">an</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">R</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. </b>These functions goes from the global rulebook to the fragmented one for
a given action:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="function-syntax">Actions::fragment_rulebook</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">Actions::fragment_rulebook</span></span>:<br/><a href="4-act.html#SP5">&#167;5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">rb</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">rb</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CHECK_RB</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">check_rules</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">rb</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CARRY_OUT_RB</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">carry_out_rules</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">rb</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">REPORT_RB</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">report_rules</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"asked for peculiar fragmented rulebook"</span><span class="plain-syntax">); </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="function-syntax">Actions::divert_to_another_actions_rulebook</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">Actions::divert_to_another_actions_rulebook</span></span>:<br/><a href="4-act.html#SP5">&#167;5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">new_an</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">old_rulebook</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">new_an</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">old_an</span><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">old_an</span><span class="plain-syntax">, </span><span class="reserved-syntax">action_name</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">old_rulebook</span><span class="plain-syntax"> == </span><span class="identifier-syntax">old_an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">check_rules</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">new_an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">check_rules</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">old_rulebook</span><span class="plain-syntax"> == </span><span class="identifier-syntax">old_an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">carry_out_rules</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">new_an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">carry_out_rules</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">old_rulebook</span><span class="plain-syntax"> == </span><span class="identifier-syntax">old_an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">report_rules</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">new_an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">report_rules</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">old_rulebook</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>&#167;5. </b>And this is where the actions plugin moves rules from their normal rulebooks:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Actions::place_rule</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">Actions::place_rule</span></span>:<br/>Actions Plugin - <a href="4-ap.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">rule</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax">, </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">original_owner</span><span class="plain-syntax">, </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> **</span><span class="identifier-syntax">new_owner</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Rules::get_imperative_definition</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</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">id</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="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">id_body</span><span class="plain-syntax"> *</span><span class="identifier-syntax">idb</span><span class="plain-syntax"> = </span><span class="identifier-syntax">id</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">body_of_defn</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">Rulebooks::requires_specific_action</span><span class="plain-syntax">(</span><span class="identifier-syntax">original_owner</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">waiver</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</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">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">PW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RuleFamily::get_prewhile_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">idb</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">head_of_defn</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">Wordings::nonempty</span><span class="plain-syntax">(</span><span class="identifier-syntax">PW</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_WORDING</span><span class="plain-syntax">(</span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">PW</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="4-nap.html#SP3" class="function-link"><span class="function-syntax">NamedActionPatterns::by_name</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">Wordings::from</span><span class="plain-syntax">(</span><span class="identifier-syntax">PW</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">)))</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="4-act.html#SP5_1" class="named-paragraph-link"><span class="named-paragraph">Issue PM_MultipleCCR</span><span class="named-paragraph-number">5.1</span></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">anyone</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">action_name_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">list</span><span class="plain-syntax"> = </span><a href="4-pap.html#SP5" class="function-link"><span class="function-syntax">ParseActionPatterns::list_of_actions_only</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">PW</span><span class="plain-syntax">, &amp;</span><span class="identifier-syntax">anyone</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOGIF</span><span class="plain-syntax">(</span><span class="identifier-syntax">RULE_ATTACHMENTS</span><span class="plain-syntax">, </span><span class="string-syntax">"Looking at '%W' (anyone flag %d):\n$L\n"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">PW</span><span class="plain-syntax">, </span><span class="identifier-syntax">anyone</span><span class="plain-syntax">, </span><span class="identifier-syntax">list</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax"> = </span><a href="4-anl.html#SP25" class="function-link"><span class="function-syntax">ActionNameLists::get_best_action</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">list</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOGIF</span><span class="plain-syntax">(</span><span class="identifier-syntax">RULE_ATTACHMENTS</span><span class="plain-syntax">, </span><span class="string-syntax">"Best action is $l\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">an</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Rules::set_marked_for_anyone</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</span><span class="plain-syntax">, </span><span class="identifier-syntax">anyone</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">waiver</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">original_owner</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CHECK_RB</span><span class="plain-syntax">)) </span><span class="identifier-syntax">waiver</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</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">original_owner</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CARRY_OUT_RB</span><span class="plain-syntax">)) </span><span class="identifier-syntax">waiver</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</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">original_owner</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">REPORT_RB</span><span class="plain-syntax">)) </span><span class="identifier-syntax">waiver</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</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">an</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">waiver</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax"> = </span><a href="4-ann.html#SP13" class="function-link"><span class="function-syntax">ActionNameNames::longest_nounless</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">PW</span><span class="plain-syntax">, </span><span class="identifier-syntax">IS_TENSE</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">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">an</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">waiver</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="named-paragraph-container code-font"><a href="4-act.html#SP5_1" class="named-paragraph-link"><span class="named-paragraph">Issue PM_MultipleCCR</span><span class="named-paragraph-number">5.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">original_owner</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CHECK_RB</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> *</span><span class="identifier-syntax">new_owner</span><span class="plain-syntax"> = </span><a href="4-act.html#SP4" class="function-link"><span class="function-syntax">Actions::fragment_rulebook</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CHECK_RB</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">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">original_owner</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CARRY_OUT_RB</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> *</span><span class="identifier-syntax">new_owner</span><span class="plain-syntax"> = </span><a href="4-act.html#SP4" class="function-link"><span class="function-syntax">Actions::fragment_rulebook</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">CARRY_OUT_RB</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">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">original_owner</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">REPORT_RB</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> *</span><span class="identifier-syntax">new_owner</span><span class="plain-syntax"> = </span><a href="4-act.html#SP4" class="function-link"><span class="function-syntax">Actions::fragment_rulebook</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">REPORT_RB</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">TRUE</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">new_owner</span><span class="plain-syntax"> = </span><a href="4-act.html#SP4" class="function-link"><span class="function-syntax">Actions::divert_to_another_actions_rulebook</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="identifier-syntax">original_owner</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">TRUE</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">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP5_1" class="paragraph-anchor"></a><b>&#167;5.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue PM_MultipleCCR</span><span class="named-paragraph-number">5.1</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">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_wording</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">PW</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_MultipleCCR</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><span class="string-syntax">"You wrote %1, but the situation this refers to ('%2') is not a single "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"action. Rules in the form of 'check', 'carry out' and 'report' are "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"tied to specific actions, and must give a single explicit action name - "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"even if they then go on to very complicated conditions about any nouns "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"also involved. So 'Check taking something: ...' is fine, but not 'Check "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"taking or dropping something: ...' or 'Check doing something: ...' - "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"the former names two actions, the latter none."</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</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">FALSE</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="4-act.html#SP5">&#167;5</a> (twice).</li></ul>
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>&#167;6. </b>And this is where the actions plugin reacts to any placement of a rule in a
rulebook, automatic or not:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Actions::rule_placement_notify</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">Actions::rule_placement_notify</span></span>:<br/>Actions Plugin - <a href="4-ap.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">rule</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax">, </span><span class="identifier-syntax">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">B</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">side</span><span class="plain-syntax">, </span><span class="identifier-syntax">rule</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ref_rule</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"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">BEFORE_RB</span><span class="plain-syntax">)) ||</span>
<span class="plain-syntax"> (</span><span class="identifier-syntax">B</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">AFTER_RB</span><span class="plain-syntax">)) ||</span>
<span class="plain-syntax"> (</span><span class="identifier-syntax">B</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">INSTEAD_RB</span><span class="plain-syntax">))) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Rules::get_imperative_definition</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</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">id</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">id_body</span><span class="plain-syntax"> *</span><span class="identifier-syntax">idb</span><span class="plain-syntax"> = </span><span class="identifier-syntax">id</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">body_of_defn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</span><span class="plain-syntax"> = </span><a href="4-rpoa.html#SP4" class="function-link"><span class="function-syntax">ActionRules::required_action</span></a><span class="plain-syntax">(&amp;(</span><span class="identifier-syntax">idb</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">runtime_context_data</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</span><span class="plain-syntax">) &amp;&amp; (</span><a href="4-as.html#SP4" class="function-link"><span class="function-syntax">ActionSemantics::is_out_of_world</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">an</span><span class="plain-syntax">)))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_OOWinIWRulebook</span><span class="plain-syntax">),</span>
<span class="plain-syntax"> </span><span class="string-syntax">"this rulebook has no effect on actions which happen out of world"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="string-syntax">"so I'm not going to let you file this rule in it. ('Check', "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"'Carry out' and 'Report' work fine for out of world actions: "</span>
<span class="plain-syntax"> </span><span class="string-syntax">"but 'Before', 'Instead' and 'After' have no effect on them.)"</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">B</span><span class="plain-syntax"> == </span><span class="identifier-syntax">Rulebooks::std</span><span class="plain-syntax">(</span><span class="identifier-syntax">SETTING_ACTION_VARIABLES_RB</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Rules::set_never_test_actor</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</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">Rulebooks::modify_rule_to_suit_focus</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">, </span><span class="identifier-syntax">R</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">side</span><span class="plain-syntax"> == </span><span class="identifier-syntax">INSTEAD_SIDE</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOGIF</span><span class="plain-syntax">(</span><span class="identifier-syntax">RULE_ATTACHMENTS</span><span class="plain-syntax">, </span><span class="string-syntax">"Copying actor test flags from rule being replaced\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Rules::copy_actor_test_flags</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</span><span class="plain-syntax">, </span><span class="identifier-syntax">ref_rule</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">Rulebooks::action_focus</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Rules::put_action_variables_in_scope</span><span class="plain-syntax">(</span><span class="identifier-syntax">ref_rule</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">Rulebooks::action_focus</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Rules::put_action_variables_in_scope</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</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">action_stem_length</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">Rules::suppress_action_testing</span><span class="plain-syntax">(</span><span class="identifier-syntax">R</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">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>&#167;7. </b>The <a href="5-pp.html" class="internal">Parsing Plugin</a> attaches command grammar to an action, but that's not
our concern here:
</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">Actions::add_gl</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">Actions::add_gl</span></span>:<br/>Command Grammar Lines - <a href="5-cgl.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</span><span class="plain-syntax">, </span><span class="reserved-syntax">cg_line</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cgl</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</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_parser_grammar_producing_this</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">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_parser_grammar_producing_this</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cgl</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">RTCommandGrammarLines::list_with_action_add</span><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_parser_grammar_producing_this</span><span class="plain-syntax">, </span><span class="identifier-syntax">cgl</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">Actions::remove_all_command_grammar</span><button class="popup" onclick="togglePopup('usagePopup8')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup8">Usage of <span class="code-font"><span class="function-syntax">Actions::remove_all_command_grammar</span></span>:<br/>Understand Sentences - <a href="5-us.html#SP17">&#167;17</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">action_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">an</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">an</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">command_parser_grammar_producing_this</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_grammar</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_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">cg</span><span class="plain-syntax">, </span><span class="reserved-syntax">command_grammar</span><span class="plain-syntax">) </span><a href="5-cg.html#SP10" class="function-link"><span class="function-syntax">CommandGrammars::remove_action</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">cg</span><span class="plain-syntax">, </span><span class="identifier-syntax">an</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>&#167;8. </b>Most actions are given automatically generated Inter identifiers, but a few
have to correspond to names referenced in <a href="../WorldModelKit/index.html" class="internal">WorldModelKit</a>, so:
</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">Actions::translates</span><span class="plain-syntax">(</span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">p</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax">&lt;action-name&gt;</span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">RTActions::translate</span><span class="plain-syntax">(</span><span class="function-syntax">&lt;&lt;rp&gt;&gt;</span><span class="plain-syntax">, </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">p</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">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"Tried action name %W\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(),</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_TranslatesNonAction</span><span class="plain-syntax">),</span>
<span class="plain-syntax"> </span><span class="string-syntax">"this does not appear to be the name of an action"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="string-syntax">"so cannot be translated into I6 at all."</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
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