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<a href='https://github.com/akkartik/mu/blob/master/018constant.cc'>https://github.com/akkartik/mu/blob/master/018constant.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: A few literal constants.</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="Delimiter">:(scenarios load)</span>  <span class="Comment">// use 'load' instead of 'run' in all scenarios in this layer</span>
<span id="L4" class="LineNr"> 4 </span>
<span id="L5" class="LineNr"> 5 </span><span class="Delimiter">:(before &quot;End Mu Types Initialization&quot;)</span>
<span id="L6" class="LineNr"> 6 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> <span class="Constant">&quot;literal-boolean&quot;</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L7" class="LineNr"> 7 </span>
<span id="L8" class="LineNr"> 8 </span><span class="Comment">//: 'true'</span>
<span id="L9" class="LineNr"> 9 </span>
<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(scenario true)</span>
<span id="L11" class="LineNr">11 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L12" class="LineNr">12 </span>  <span class="Constant">1</span>:boolean<span class="Special"> &lt;- </span>copy<span class="Constant"> true</span>
<span id="L13" class="LineNr">13 </span>]
<span id="L14" class="LineNr">14 </span><span class="traceContains">+parse:   ingredient: {true: &quot;literal-boolean&quot;}</span>
<span id="L15" class="LineNr">15 </span>
<span id="L16" class="LineNr">16 </span><span class="Delimiter">:(before &quot;End Parsing reagent&quot;)</span>
<span id="L17" class="LineNr">17 </span><span class="Normal">if</span> <span class="Delimiter">(</span>name == <span class="Constant">&quot;true&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L18" class="LineNr">18 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type != <span class="Constant">NULL</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L19" class="LineNr">19 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;'true' is a literal and can't take a type\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L20" class="LineNr">20 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L21" class="LineNr">21 </span>  <span class="Delimiter">}</span>
<span id="L22" class="LineNr">22 </span>  type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">&quot;literal-boolean&quot;</span><span class="Delimiter">);</span>
<span id="L23" class="LineNr">23 </span>  <a href='010vm.cc.html#L67'>set_value</a><span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L24" class="LineNr">24 </span><span class="Delimiter">}</span>
<span id="L25" class="LineNr">25 </span>
<span id="L26" class="LineNr">26 </span><span class="Comment">//: 'false'</span>
<span id="L27" class="LineNr">27 </span>
<span id="L28" class="LineNr">28 </span><span class="Delimiter">:(scenario false)</span>
<span id="L29" class="LineNr">29 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L30" class="LineNr">30 </span>  <span class="Constant">1</span>:boolean<span class="Special"> &lt;- </span>copy<span class="Constant"> false</span>
<span id="L31" class="LineNr">31 </span>]
<span id="L32" class="LineNr">32 </span><span class="traceContains">+parse:   ingredient: {false: &quot;literal-boolean&quot;}</span>
<span id="L33" class="LineNr">33 </span>
<span id="L34" class="LineNr">34 </span><span class="Delimiter">:(before &quot;End Parsing reagent&quot;)</span>
<span id="L35" class="LineNr">35 </span><span class="Normal">if</span> <span class="Delimiter">(</span>name == <span class="Constant">&quot;false&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L36" class="LineNr">36 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type != <span class="Constant">NULL</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L37" class="LineNr">37 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;'false' is a literal and can't take a type\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L38" class="LineNr">38 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L39" class="LineNr">39 </span>  <span class="Delimiter">}</span>
<span id="L40" class="LineNr">40 </span>  type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">&quot;literal-boolean&quot;</span><span class="Delimiter">);</span>
<span id="L41" class="LineNr">41 </span>  <a href='010vm.cc.html#L67'>set_value</a><span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L42" class="LineNr">42 </span><span class="Delimiter">}</span>
<span id="L43" class="LineNr">43 </span>
<span id="L44" class="LineNr">44 </span><span class="Comment">//: 'null'</span>
<span id="L45" class="LineNr">45 </span>
<span id="L46" class="LineNr">46 </span><span class="Delimiter">:(before &quot;End Mu Types Initialization&quot;)</span>
<span id="L47" class="LineNr">47 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> <span class="Constant">&quot;literal-address&quot;</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L48" class="LineNr">48 </span>
<span id="L49" class="LineNr">49 </span><span class="Delimiter">:(scenario null)</span>
<span id="L50" class="LineNr">50 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L51" class="LineNr">51 </span>  <span class="Constant">1</span>:<a href='043space.cc.html#L101'>address</a>:number<span class="Special"> &lt;- </span>copy<span class="Constant"> null</span>
<span id="L52" class="LineNr">52 </span>]
<span id="L53" class="LineNr">53 </span><span class="traceContains">+parse:   ingredient: {null: &quot;literal-address&quot;}</span>
<span id="L54" class="LineNr">54 </span>
<span id="L55" class="LineNr">55 </span><span class="Delimiter">:(before &quot;End Parsing reagent&quot;)</span>
<span id="L56" class="LineNr">56 </span><span class="Normal">if</span> <span class="Delimiter">(</span>name == <span class="Constant">&quot;null&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L57" class="LineNr">57 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type != <span class="Constant">NULL</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L58" class="LineNr">58 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;'null' is a literal and can't take a type\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L59" class="LineNr">59 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L60" class="LineNr">60 </span>  <span class="Delimiter">}</span>
<span id="L61" class="LineNr">61 </span>  type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">&quot;literal-address&quot;</span><span class="Delimiter">);</span>
<span id="L62" class="LineNr">62 </span>  <a href='010vm.cc.html#L67'>set_value</a><span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L63" class="LineNr">63 </span><span class="Delimiter">}</span>
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