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<!--Weave of 'Stacked Variables' generated by Inweb-->
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7 Modules</a></li><li><a href="index.html">core</a></li><li><a href="index.html#21">Chapter 21: Rules and Rulebooks</a></li><li><b>Stacked Variables</b></li></ul></div>
<p class="purpose">To permit variables to have scopes intermediate between local and global: for example, to be shared by all rules in a given rulebook.</p>
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<ul class="toc"><li><a href="21-sv.html#SP1">&#167;1. Definitions</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1"></a><b>&#167;1. Definitions. </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">stacked_variable</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">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">name</span><span class="plain-syntax">; </span><span class="comment-syntax"> text of the name</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">assigned_at</span><span class="plain-syntax">; </span><span class="comment-syntax"> sentence assigning it</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">nonlocal_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">underlying_var</span><span class="plain-syntax">; </span><span class="comment-syntax"> the variable in question</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">owner_id</span><span class="plain-syntax">; </span><span class="comment-syntax"> who owns this</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">offset_in_owning_frame</span><span class="plain-syntax">; </span><span class="comment-syntax"> word offset of storage (counts from 0)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">match_wording_text</span><span class="plain-syntax">; </span><span class="comment-syntax"> matching text (relevant for action variables only)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">MEMORY_MANAGEMENT</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax">;</span>
<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">stacked_variable_list</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">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">the_stv</span><span class="plain-syntax">; </span><span class="comment-syntax"> the STV</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">next</span><span class="plain-syntax">; </span><span class="comment-syntax"> in linked list</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">MEMORY_MANAGEMENT</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax">;</span>
<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">stacked_variable_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">no_stvs</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">recognition_id</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">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">list_of_stvs</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">stvo_iname</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">MEMORY_MANAGEMENT</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax">;</span>
<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">stacked_variable_owner_list</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">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</span><span class="plain-syntax">; </span><span class="comment-syntax"> the STO</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">next</span><span class="plain-syntax">; </span><span class="comment-syntax"> in linked list</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">MEMORY_MANAGEMENT</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure stacked_variable is accessed in 2/sq, 2/si, 5/ins, 5/nv, 8/ef, 9/ma, 9/pk, 11/sm, 14/lv, 14/ds2, 15/pr, 15/ep, 15/vp, 15/spr, 16/in, 16/cmw, 17/rs, 19/tc, 19/tb, 19/tod, 20/eq, 21/rl, 21/rl2, 21/fao, 21/rps, 21/ac, 22/pu, 22/dptd, 22/po, 22/pav, 25/cii, 26/uo, 26/ts and here.</li><li>The structure stacked_variable_list is accessed in 3/pd, 5/lp, 5/ut, 5/un, 5/ins, 6/rlt, 6/nv, 7/ns, 7/oaf, 7/rs, 9/tfa, 9/tbath, 9/rpt, 9/tc, 9/ma, 9/rk, 9/ass, 9/imp, 9/pd, 10/teav, 10/cap, 11/ap, 11/pr, 11/bas, 11/tc, 11/sm, 12/dtd, 12/cdp, 14/rv, 14/lv, 14/cn, 14/ds, 14/ds2, 15/cp, 16/is, 16/in, 19/tb, 19/rsft, 19/tod, 20/eq, 21/rl, 21/rl2, 21/fao, 21/rps, 21/ac, 22/ph, 22/tp, 22/tp2, 23/ad, 24/lv, 24/sf, 25/in, 25/pi, 25/cii, 25/cp, 26/uo, 26/tti, 26/pc, 26/ts, 27/cm and here.</li><li>The structure stacked_variable_owner is private to this section.</li><li>The structure stacked_variable_owner_list is accessed in 3/pd, 5/lp, 5/ut, 5/un, 5/ins, 6/rlt, 6/nv, 7/ns, 7/oaf, 7/rs, 9/tfa, 9/tbath, 9/rpt, 9/tc, 9/ma, 9/rk, 9/ass, 9/imp, 9/pd, 10/teav, 10/cap, 11/ap, 11/pr, 11/bas, 11/tc, 11/sm, 12/dtd, 12/cdp, 14/rv, 14/lv, 14/cn, 14/ds, 14/ds2, 15/cp, 16/is, 16/in, 19/tb, 19/rsft, 19/tod, 20/eq, 21/rl, 21/rl2, 21/fao, 21/rps, 21/ac, 22/ph, 22/tp, 22/tp2, 23/ad, 24/lv, 24/sf, 25/in, 25/pi, 25/cii, 25/cp, 26/uo, 26/tti, 26/pc, 26/ts, 27/cm and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP2"></a><b>&#167;2. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">max_frame_size_needed</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3"></a><b>&#167;3. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">nonlocal_variable_emission</span><span class="plain-syntax"> </span><span class="function-syntax">StackedVariables::how_to_lvalue</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">owner_id</span><span class="plain-syntax"> == </span><span class="constant-syntax">ACTION_PROCESSING_RB</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">offset_in_owning_frame</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-nv.html#SP11" class="function-link"><span class="function-syntax">NonlocalVariables::nve_from_iname</span></a><span class="plain-syntax">(</span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="constant-syntax">ACTOR_HL</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">return</span><span class="plain-syntax"> </span><a href="5-nv.html#SP11" class="function-link"><span class="function-syntax">NonlocalVariables::nve_from_mstack</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">owner_id</span><span class="plain-syntax">, </span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">offset_in_owning_frame</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">nonlocal_variable_emission</span><span class="plain-syntax"> </span><span class="function-syntax">StackedVariables::how_to_rvalue</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">owner_id</span><span class="plain-syntax"> == </span><span class="constant-syntax">ACTION_PROCESSING_RB</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">offset_in_owning_frame</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-nv.html#SP11" class="function-link"><span class="function-syntax">NonlocalVariables::nve_from_iname</span></a><span class="plain-syntax">(</span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="constant-syntax">ACTOR_HL</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">return</span><span class="plain-syntax"> </span><a href="5-nv.html#SP11" class="function-link"><span class="function-syntax">NonlocalVariables::nve_from_mstack</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">owner_id</span><span class="plain-syntax">, </span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">offset_in_owning_frame</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">int</span><span class="plain-syntax"> </span><span class="function-syntax">StackedVariables::get_owner_id</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">owner_id</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">StackedVariables::get_offset</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">offset_in_owning_frame</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::get_kind</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nonlocal_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">nlv</span><span class="plain-syntax"> = </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::get_variable</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stv</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-nv.html#SP19" class="function-link"><span class="function-syntax">NonlocalVariables::kind</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">nlv</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">nonlocal_variable</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::get_variable</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">StackedVariables::get_variable</span></span>:<br/><a href="21-sv.html#SP3_1">&#167;3.1</a>, <a href="21-sv.html#SP3_2">&#167;3.2</a><br/>Type Expressions and Values - <a href="10-teav.html#SP16">&#167;16</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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">stv</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">underlying_var</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">StackedVariables::set_matching_text</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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="plain-syntax"> </span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">match_wording_text</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">wording</span><span class="plain-syntax"> </span><span class="function-syntax">StackedVariables::get_matching_text</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">match_wording_text</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::parse_match_clause</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</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>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">list_of_stvs</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</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::starts_with</span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">match_wording_text</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">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::new_owner</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">StackedVariables::new_owner</span></span>:<br/>Rulebooks - <a href="21-rl2.html#SP10">&#167;10</a><br/>Activities - <a href="21-ac.html#SP6">&#167;6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">recognition_id</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">stvo</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">no_stvs</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">stvo</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">list_of_stvs</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">stvo</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">stvo_iname</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">stvo</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">StackedVariables::owner_empty</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">StackedVariables::owner_empty</span></span>:<br/>Rulebooks - <a href="21-rl2.html#SP14">&#167;14</a>, <a href="21-rl2.html#SP14_1">&#167;14.1</a><br/>Activities - <a href="21-ac.html#SP8">&#167;8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</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">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">no_stvs</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</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>
<span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::add_empty</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">StackedVariables::add_empty</span></span>:<br/>Rulebooks - <a href="21-rl2.html#SP14">&#167;14</a><br/>Activities - <a href="21-ac.html#SP8">&#167;8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</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><span class="identifier-syntax">kind</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">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nonlocal_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">q</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Articles::remove_the</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">name</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">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">owner_id</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">recognition_id</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">offset_in_owning_frame</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">no_stvs</span><span class="plain-syntax">++;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">assigned_at</span><span class="plain-syntax"> = </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">match_wording_text</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">stvo</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">list_of_stvs</span><span class="plain-syntax"> = </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::add_to_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">list_of_stvs</span><span class="plain-syntax">, </span><span class="identifier-syntax">stv</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">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">no_stvs</span><span class="plain-syntax"> &gt; </span><span class="identifier-syntax">max_frame_size_needed</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">max_frame_size_needed</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">no_stvs</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">q</span><span class="plain-syntax"> = </span><a href="5-nv.html#SP6" class="function-link"><span class="function-syntax">NonlocalVariables::new_stacked</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">stv</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">underlying_var</span><span class="plain-syntax"> = </span><span class="identifier-syntax">q</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><a href="5-nv.html#SP11" class="function-link"><span class="function-syntax">NonlocalVariables::set_I6_identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">q</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">, </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::how_to_rvalue</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stv</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><a href="5-nv.html#SP11" class="function-link"><span class="function-syntax">NonlocalVariables::set_I6_identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">q</span><span class="plain-syntax">, </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">, </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::how_to_lvalue</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stv</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">stv</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::add_owner_to_list</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">StackedVariables::add_owner_to_list</span></span>:<br/>Rulebooks - <a href="21-rl2.html#SP10">&#167;10</a>, <a href="21-rl2.html#SP14">&#167;14</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvol</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ostvol</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvol</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">stvol</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">stvol</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">stvo</span><span class="plain-syntax"> == </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">ostvol</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">nxt</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvol</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</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">nxt</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvol</span><span class="plain-syntax"> = </span><span class="identifier-syntax">nxt</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">nstvol</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">nstvol</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">nstvol</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">stvo</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</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">stvol</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">nstvol</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvol</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">nstvol</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">ostvol</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::append_owner_list</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">StackedVariables::append_owner_list</span></span>:<br/>Rules - <a href="21-rl.html#SP16">&#167;16</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvol</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">extras</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">RULEBOOK_COMPILATION</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="string-syntax">"Appending list %08x to list %08x\n"</span><span class="plain-syntax">, (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">extras</span><span class="plain-syntax">, (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">stvol</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">new_head</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvol</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">extras</span><span class="plain-syntax">; </span><span class="identifier-syntax">extras</span><span class="plain-syntax"> = </span><span class="identifier-syntax">extras</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">new_head</span><span class="plain-syntax"> = </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::add_owner_to_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">new_head</span><span class="plain-syntax">, </span><span class="identifier-syntax">extras</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">stvo</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">new_head</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">StackedVariables::list_length</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</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">l</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">stvl</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">l</span><span class="plain-syntax">++;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</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">l</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">StackedVariables::index_owner</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</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">stvl</span><span class="plain-syntax">=</span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">list_of_stvs</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</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">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">underlying_var</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTMLFiles::open_para</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="constant-syntax">2</span><span class="plain-syntax">, </span><span class="string-syntax">"tight"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="5-nv.html#SP28" class="function-link"><span class="function-syntax">NonlocalVariables::index_single</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">underlying_var</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::parse_from_owner_list</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">StackedVariables::parse_from_owner_list</span></span>:<br/>Type Expressions and Values - <a href="10-teav.html#SP16">&#167;16</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvol</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="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Wordings::empty</span><span class="plain-syntax">(</span><span class="identifier-syntax">W</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">W</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Articles::remove_the</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">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">stvol</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</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">stvol</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">stvo</span><span class="plain-syntax">) </span><span class="identifier-syntax">stv</span><span class="plain-syntax"> = </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::parse_from_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stvol</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">list_of_stvs</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">stv</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">stv</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvol</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvol</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</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">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::parse_from_list</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</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="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">stvl</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::match</span><span class="plain-syntax">(</span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">name</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">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</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">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::add_to_list</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stv</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">nstvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax">), *</span><span class="identifier-syntax">ostvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">nstvl</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">the_stv</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stv</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">nstvl</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">next</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">stvl</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">nstvl</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">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax">) </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">nstvl</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">ostvl</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">StackedVariables::compile_frame_creator</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">StackedVariables::compile_frame_creator</span></span>:<br/>Rulebooks - <a href="21-rl2.html#SP14">&#167;14</a><br/>Activities - <a href="21-ac.html#SP8">&#167;8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</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>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">stvo</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="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><a href="26-rt.html#SP1" class="function-link"><span class="function-syntax">Routines::begin</span></a><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">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pos_s</span><span class="plain-syntax"> = </span><a href="24-lv.html#SP11" class="function-link"><span class="function-syntax">LocalVariables::add_named_call_as_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"pos"</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">state_s</span><span class="plain-syntax"> = </span><a href="24-lv.html#SP11" class="function-link"><span class="function-syntax">LocalVariables::add_named_call_as_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"state"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">IFELSE_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">EQ_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::val_symbol</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">state_s</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::val</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_number</span><span class="plain-syntax">, </span><span class="identifier-syntax">LITERAL_IVAL</span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::code</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="21-sv.html#SP3_1" class="named-paragraph-link"><span class="named-paragraph">Compile frame creator if state is set</span><span class="named-paragraph-number">3.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::code</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="21-sv.html#SP3_2" class="named-paragraph-link"><span class="named-paragraph">Compile frame creator if state is clear</span><span class="named-paragraph-number">3.2</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><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">count</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">list_of_stvs</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax">) </span><span class="identifier-syntax">count</span><span class="plain-syntax">++;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">RETURN_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::val</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_number</span><span class="plain-syntax">, </span><span class="identifier-syntax">LITERAL_IVAL</span><span class="plain-syntax">, (</span><span class="identifier-syntax">inter_t</span><span class="plain-syntax">) </span><span class="identifier-syntax">count</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><a href="26-rt.html#SP4" class="function-link"><span class="function-syntax">Routines::end</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">save</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">stvo_iname</span><span class="plain-syntax"> = </span><span class="identifier-syntax">iname</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">count</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
2019-03-17 14:40:57 +02:00
</pre>
2020-05-03 03:01:21 +03:00
<p class="commentary firstcommentary"><a id="SP3_1"></a><b>&#167;3.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Compile frame creator if state is set</span><span class="named-paragraph-number">3.1</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">list_of_stvs</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nonlocal_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">q</span><span class="plain-syntax"> = </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::get_variable</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</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><a href="5-nv.html#SP19" class="function-link"><span class="function-syntax">NonlocalVariables::kind</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">q</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">STORE_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">LOOKUPREF_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::val_iname</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="constant-syntax">MSTACK_HL</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::val_symbol</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos_s</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><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::uses_pointer_values</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><a href="13-rsfk.html#SP19" class="function-link"><span class="function-syntax">Kinds::RunTime::emit_heap_allocation</span></a><span class="plain-syntax">(</span><a href="13-rsfk.html#SP19" class="function-link"><span class="function-syntax">Kinds::RunTime::make_heap_allocation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">, -1));</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
<span class="plain-syntax"> </span><a href="5-nv.html#SP25" class="function-link"><span class="function-syntax">NonlocalVariables::emit_initial_value_as_val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">q</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">POSTINCREMENT_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::ref_symbol</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos_s</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> }</span>
2019-03-17 14:40:57 +02:00
</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="21-sv.html#SP3">&#167;3</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP3_2"></a><b>&#167;3.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Compile frame creator if state is clear</span><span class="named-paragraph-number">3.2</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">stacked_variable_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">list_of_stvs</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">; </span><span class="identifier-syntax">stvl</span><span class="plain-syntax"> = </span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nonlocal_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">q</span><span class="plain-syntax"> = </span><a href="21-sv.html#SP3" class="function-link"><span class="function-syntax">StackedVariables::get_variable</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">stvl</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">the_stv</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><a href="5-nv.html#SP19" class="function-link"><span class="function-syntax">NonlocalVariables::kind</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">q</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::uses_pointer_values</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_call_iname</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="constant-syntax">BLKVALUEFREE_HL</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">LOOKUP_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::val_iname</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="constant-syntax">MSTACK_HL</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::val_symbol</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos_s</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">POSTINCREMENT_BIP</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::down</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::ref_symbol</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos_s</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::up</span><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax"> }</span>
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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="21-sv.html#SP3">&#167;3</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP4"></a><b>&#167;4. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
<span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">StackedVariables::frame_creator</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">StackedVariables::frame_creator</span></span>:<br/>Rulebooks - <a href="21-rl2.html#SP14">&#167;14</a><br/>Activities - <a href="21-ac.html#SP8">&#167;8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">stacked_variable_owner</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stvo</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">stvo</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">stvo_iname</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
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</pre>
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