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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<title>Instances</title>
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<main role="main">
<!--Weave of 'Instances' generated by Inweb-->
<div class="breadcrumbs">
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7</a></li><li><a href="index.html">runtime</a></li><li><a href="index.html#5">Chapter 5: Miscellany</a></li><li><b>Instances</b></li></ul></div>
<p class="purpose">To compile run-time support for instances.</p>
<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">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">instance_compilation_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="identifier-syntax">package_request</span><span class="plain-syntax"> *</span><span class="identifier-syntax">instance_package</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">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">instance_iname</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">instance_emitted</span><span class="plain-syntax">;</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">instance_compilation_data</span><span class="plain-syntax">;</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">RTInstances::initialise_icd</span><span class="plain-syntax">(</span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="identifier-syntax">instance_package</span><span class="plain-syntax"> = </span><a href="2-hrr.html#SP19" class="function-link"><span class="function-syntax">Hierarchy::local_package</span></a><span class="plain-syntax">(</span><span class="constant-syntax">INSTANCES_HAP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="5-ni.html#SP1" class="function-link"><span class="function-syntax">NounIdentifiers::noun_compose_identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">as_noun</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">allocation_id</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="identifier-syntax">instance_iname</span><span class="plain-syntax"> = </span><a href="5-ni.html#SP1" class="function-link"><span class="function-syntax">NounIdentifiers::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">as_noun</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="identifier-syntax">instance_emitted</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">void</span><span class="plain-syntax"> </span><span class="function-syntax">RTInstances::compile_metadata</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</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">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">instance</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="2-hrr.html#SP23" class="function-link"><span class="function-syntax">Hierarchy::apply_metadata_from_wording</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">INSTANCE_NAME_MD_HL</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Nouns::nominative</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">as_noun</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><a href="2-hrr.html#SP23" class="function-link"><span class="function-syntax">Hierarchy::apply_metadata_from_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">INSTANCE_VALUE_MD_HL</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_iname</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">kn_iname</span><span class="plain-syntax"> = </span><a href="2-hrr.html#SP12" class="function-link"><span class="function-syntax">Hierarchy::make_iname_in</span></a><span class="plain-syntax">(</span><span class="constant-syntax">INSTANCE_KIND_MD_HL</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Instances::to_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="5-rsfk.html#SP14" class="function-link"><span class="function-syntax">RTKinds::constant_from_strong_id</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">kn_iname</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</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">K_scene</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">Kinds::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_scene</span><span class="plain-syntax">)))</span>
<span class="plain-syntax"> </span><a href="2-hrr.html#SP23" class="function-link"><span class="function-syntax">Hierarchy::apply_metadata_from_number</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">INSTANCE_IS_SCENE_MD_HL</span><span class="plain-syntax">, </span><span class="constant-syntax">1</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">K_sound_name</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">Kinds::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_sound_name</span><span class="plain-syntax">)))</span>
<span class="plain-syntax"> </span><a href="2-hrr.html#SP23" class="function-link"><span class="function-syntax">Hierarchy::apply_metadata_from_number</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">INSTANCE_IS_SOUND_MD_HL</span><span class="plain-syntax">, </span><span class="constant-syntax">1</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">K_figure_name</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">Kinds::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_figure_name</span><span class="plain-syntax">)))</span>
<span class="plain-syntax"> </span><a href="2-hrr.html#SP23" class="function-link"><span class="function-syntax">Hierarchy::apply_metadata_from_number</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">INSTANCE_IS_FIGURE_MD_HL</span><span class="plain-syntax">, </span><span class="constant-syntax">1</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">K_external_file</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">Kinds::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_external_file</span><span class="plain-syntax">)))</span>
<span class="plain-syntax"> </span><a href="2-hrr.html#SP23" class="function-link"><span class="function-syntax">Hierarchy::apply_metadata_from_number</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">INSTANCE_IS_EXF_MD_HL</span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">RTInstances::iname</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">RTInstances::iname</span></span>:<br/><a href="5-ins.html#SP2">&#167;2</a>, <a href="5-ins.html#SP4">&#167;4</a><br/>List Literals - <a href="4-ll.html#SP7_2">&#167;7.2</a><br/>Stored Action Literals - <a href="4-sal.html#SP1">&#167;1</a><br/>Runtime Support for Kinds - <a href="5-rsfk.html#SP26_3">&#167;26.3</a><br/>Naming - <a href="6-nmn.html#SP2">&#167;2</a><br/>The Player - <a href="6-tp.html#SP1">&#167;1</a><br/>Backdrops - <a href="6-bck.html#SP2_1">&#167;2.1</a><br/>Regions - <a href="6-rgn.html#SP2">&#167;2</a><br/>The Map - <a href="6-tm.html#SP2_2">&#167;2.2</a>, <a href="6-tm.html#SP3">&#167;3</a>, <a href="6-tm.html#SP4">&#167;4</a><br/>Action Patterns - <a href="7-ap.html#SP6_1_1_1">&#167;6.1.1.1</a><br/>Tokens Parsing Values - <a href="8-tpv.html#SP1_1">&#167;1.1</a><br/>Test Scripts - <a href="10-ts.html#SP3">&#167;3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</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">I</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">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">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_iname</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<ul class="endnotetexts"><li>The structure instance_compilation_data is private to this section.</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. </b></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">RTInstances::emit_element_of_condition</span><span class="plain-syntax">(</span><span class="identifier-syntax">inference_subject_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">family</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">infs</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t0_s</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InstanceSubjects::to_instance</span><span class="plain-syntax">(</span><span class="identifier-syntax">infs</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ec.html#SP10" class="function-link"><span class="function-syntax">EmitCode::inv</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">EQ_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::down</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-ec.html#SP7" class="function-link"><span class="function-syntax">EmitCode::val_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">t0_s</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ec.html#SP7" class="function-link"><span class="function-syntax">EmitCode::val_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><a href="5-ins.html#SP1" class="function-link"><span class="function-syntax">RTInstances::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><a href="2-ec.html#SP3" class="function-link"><span class="function-syntax">EmitCode::up</span></a><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>
</pre>
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>&#167;3. </b>Compilation looks tricky only because we need to compile instances in a
set order which is not the order of their creation. (This is because objects
must be compiled in containment-tree traversal order in the final Inform 6
code.) So in reply to a request to compile all instances, we first delegate
the object instances, then compile the non-object ones (all just constant
declarations) and finally return <span class="extract"><span class="extract-syntax">TRUE</span></span> to indicate that the task is finished.
</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">RTInstances::emit_all</span><span class="plain-syntax">(</span><span class="identifier-syntax">inference_subject_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">family</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">ignored</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_INSTANCE_ORDERING</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><a href="5-ins.html#SP4" class="function-link"><span class="function-syntax">RTInstances::emit_one</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">family</span><span class="plain-syntax">, </span><span class="identifier-syntax">Instances::as_subject</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</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">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">instance</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">Kinds::Behaviour::is_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">Instances::to_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><a href="5-ins.html#SP4" class="function-link"><span class="function-syntax">RTInstances::emit_one</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">family</span><span class="plain-syntax">, </span><span class="identifier-syntax">Instances::as_subject</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><a href="6-nmn.html#SP2" class="function-link"><span class="function-syntax">RTNaming::compile_small_names</span></a><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>
</pre>
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>&#167;4. </b>Either way, the actual compilation happens 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">RTInstances::emit_one</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">RTInstances::emit_one</span></span>:<br/><a href="5-ins.html#SP3">&#167;3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inference_subject_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">family</span><span class="plain-syntax">, </span><span class="identifier-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">infs</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InstanceSubjects::to_instance</span><span class="plain-syntax">(</span><span class="identifier-syntax">infs</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="5-ins.html#SP4" class="function-link"><span class="function-syntax">RTInstances::emitted_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="5-prp.html#SP6" class="function-link"><span class="function-syntax">RTProperties::emit_instance_permissions</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="5-epv.html#SP1" class="function-link"><span class="function-syntax">RTPropertyValues::emit_subject</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">infs</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">RTInstances::emitted_iname</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">RTInstances::emitted_iname</span></span>:<br/>Emit - <a href="2-emt.html#SP18">&#167;18</a><br/>Runtime Support for Kinds - <a href="5-rsfk.html#SP6">&#167;6</a><br/>Properties - <a href="5-prp.html#SP6">&#167;6</a><br/>Emit Property Values - <a href="5-epv.html#SP1">&#167;1</a><br/>Instance Counting - <a href="5-ic.html#SP9">&#167;9</a><br/>The Map - <a href="6-tm.html#SP2_1">&#167;2.1</a>, <a href="6-tm.html#SP2_2">&#167;2.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</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">I</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">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax"> = </span><a href="5-ins.html#SP1" class="function-link"><span class="function-syntax">RTInstances::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</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">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_emitted</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">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_emitted</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><a href="2-emt.html#SP15" class="function-link"><span class="function-syntax">Emit::instance</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">, </span><span class="identifier-syntax">Instances::to_kind</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="plain-syntax">-&gt;</span><span class="identifier-syntax">enumeration_index</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">iname</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">package_request</span><span class="plain-syntax"> *</span><span class="function-syntax">RTInstances::package</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">RTInstances::package</span></span>:<br/>Emit Property Values - <a href="5-epv.html#SP2">&#167;2</a><br/>Naming - <a href="6-nmn.html#SP2">&#167;2</a><br/>Backdrops - <a href="6-bck.html#SP1">&#167;1</a><br/>Regions - <a href="6-rgn.html#SP1">&#167;1</a><br/>The Map - <a href="6-tm.html#SP3">&#167;3</a><br/>Scenes - <a href="6-scn.html#SP2">&#167;2</a>, <a href="6-scn.html#SP6">&#167;6</a><br/>Actions - <a href="7-act.html#SP1">&#167;1</a><br/>Parsing - <a href="8-prs.html#SP2">&#167;2</a><br/>Figures - <a href="9-fgr.html#SP1">&#167;1</a><br/>Sound Effects - <a href="9-se.html#SP1">&#167;1</a><br/>External Files - <a href="9-ef.html#SP1">&#167;1</a><br/>Showme Command - <a href="10-sc.html#SP2_2">&#167;2.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">instance</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="5-ins.html#SP1" class="function-link"><span class="function-syntax">RTInstances::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">); </span><span class="comment-syntax"> Thus forcing this to exist...</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">icd</span><span class="plain-syntax">.</span><span class="element-syntax">instance_package</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
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