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<a href='https://github.com/akkartik/mu/blob/master/072recipe.cc'>https://github.com/akkartik/mu/blob/master/072recipe.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr">  1 </span><span class="Comment">//: So far we've been calling a fixed recipe in each instruction, but we'd</span>
<span id="L2" class="LineNr">  2 </span><span class="Comment">//: also like to make the recipe a variable, pass recipes to &quot;higher-order&quot;</span>
<span id="L3" class="LineNr">  3 </span><span class="Comment">//: recipes, return recipes from recipes and so on.</span>
<span id="L4" class="LineNr">  4 </span>
<span id="L5" class="LineNr">  5 </span><span class="Delimiter">:(scenario call_literal_recipe)</span>
<span id="L6" class="LineNr">  6 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L7" class="LineNr">  7 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>call f<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L8" class="LineNr">  8 </span>]
<span id="L9" class="LineNr">  9 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L10" class="LineNr"> 10 </span>  local-scope
<span id="L11" class="LineNr"> 11 </span>  load-ingredients
<span id="L12" class="LineNr"> 12 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L13" class="LineNr"> 13 </span>]
<span id="L14" class="LineNr"> 14 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L15" class="LineNr"> 15 </span>
<span id="L16" class="LineNr"> 16 </span><span class="Delimiter">:(before &quot;End Mu Types Initialization&quot;)</span>
<span id="L17" class="LineNr"> 17 </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;recipe-literal&quot;</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L18" class="LineNr"> 18 </span><span class="Comment">// 'recipe' variables can store recipe-literal</span>
<span id="L19" class="LineNr"> 19 </span><a href='010vm.cc.html#L125'>type_ordinal</a> <a href='010vm.cc.html#L19'>recipe</a> = <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;recipe&quot;</span><span class="Delimiter">,</span> <span class="Special">Next_type_ordinal</span>++<span class="Delimiter">);</span>
<span id="L20" class="LineNr"> 20 </span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span><span class="Special">Type</span><span class="Delimiter">,</span> <a href='010vm.cc.html#L19'>recipe</a><span class="Delimiter">).</span>name = <span class="Constant">&quot;recipe&quot;</span><span class="Delimiter">;</span>
<span id="L21" class="LineNr"> 21 </span>
<span id="L22" class="LineNr"> 22 </span><span class="Delimiter">:(after &quot;Deduce Missing Type(x, caller)&quot;)</span>
<span id="L23" class="LineNr"> 23 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span>
<span id="L24" class="LineNr"> 24 </span>  <a href='072recipe.cc.html#L29'>try_initialize_recipe_literal</a><span class="Delimiter">(</span>x<span class="Delimiter">,</span> caller<span class="Delimiter">);</span>
<span id="L25" class="LineNr"> 25 </span><span class="Delimiter">:(before &quot;Type Check in Type-ingredient-aware check_or_set_types_by_name&quot;)</span>
<span id="L26" class="LineNr"> 26 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span>
<span id="L27" class="LineNr"> 27 </span>  <a href='072recipe.cc.html#L29'>try_initialize_recipe_literal</a><span class="Delimiter">(</span>x<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
<span id="L28" class="LineNr"> 28 </span><span class="Delimiter">:(code)</span>
<span id="L29" class="LineNr"> 29 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L29'>try_initialize_recipe_literal</a><span class="Delimiter">(</span>reagent&amp; x<span class="Delimiter">,</span> <span class="Normal">const</span> recipe&amp; caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L30" class="LineNr"> 30 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L31" class="LineNr"> 31 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L32" class="LineNr"> 32 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L36'>contains_reagent_with_non_recipe_literal_type</a><span class="Delimiter">(</span>caller<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L33" class="LineNr"> 33 </span>  x<span class="Delimiter">.</span>type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">&quot;recipe-literal&quot;</span><span class="Delimiter">);</span>
<span id="L34" class="LineNr"> 34 </span>  x<span class="Delimiter">.</span><a href='010vm.cc.html#L67'>set_value</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">));</span>
<span id="L35" class="LineNr"> 35 </span><span class="Delimiter">}</span>
<span id="L36" class="LineNr"> 36 </span><span class="Normal">bool</span> <a href='072recipe.cc.html#L36'>contains_reagent_with_non_recipe_literal_type</a><span class="Delimiter">(</span><span class="Normal">const</span> recipe&amp; caller<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L37" class="LineNr"> 37 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L38" class="LineNr"> 38 </span>    <span class="Normal">const</span> instruction&amp; inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L39" class="LineNr"> 39 </span>    <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span>
<span id="L40" class="LineNr"> 40 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L46'>is_matching_non_recipe_literal</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> name<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L41" class="LineNr"> 41 </span>    <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span>
<span id="L42" class="LineNr"> 42 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L46'>is_matching_non_recipe_literal</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> name<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L43" class="LineNr"> 43 </span>  <span class="Delimiter">}</span>
<span id="L44" class="LineNr"> 44 </span>  <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L45" class="LineNr"> 45 </span><span class="Delimiter">}</span>
<span id="L46" class="LineNr"> 46 </span><span class="Normal">bool</span> <a href='072recipe.cc.html#L46'>is_matching_non_recipe_literal</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L47" class="LineNr"> 47 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name != name<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L48" class="LineNr"> 48 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L49" class="LineNr"> 49 </span>  <span class="Identifier">return</span> !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom || x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name != <span class="Constant">&quot;recipe-literal&quot;</span><span class="Delimiter">;</span>
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">}</span>
<span id="L51" class="LineNr"> 51 </span>
<span id="L52" class="LineNr"> 52 </span><span class="Comment">//: It's confusing to use variable names that are also recipe names. Always</span>
<span id="L53" class="LineNr"> 53 </span><span class="Comment">//: assume variable types override recipe literals.</span>
<span id="L54" class="LineNr"> 54 </span><span class="Delimiter">:(scenario error_on_recipe_literal_used_as_a_variable)</span>
<span id="L55" class="LineNr"> 55 </span><span class="Special">% Hide_errors = true;</span>
<span id="L56" class="LineNr"> 56 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L57" class="LineNr"> 57 </span>  local-scope
<span id="L58" class="LineNr"> 58 </span>  <span class="Normal">a</span>:<span class="Normal">bool</span><span class="Special"> &lt;- </span>equal <span class="Identifier">break</span> <span class="Constant">0</span>
<span id="L59" class="LineNr"> 59 </span>  <span class="Identifier">break</span>:<span class="Normal">bool</span><span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
<span id="L60" class="LineNr"> 60 </span>]
<span id="L61" class="LineNr"> 61 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: missing type for 'break' in 'a:bool &lt;- equal break, 0'</span>
<span id="L62" class="LineNr"> 62 </span>
<span id="L63" class="LineNr"> 63 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
<span id="L64" class="LineNr"> 64 </span>CALL<span class="Delimiter">,</span>
<span id="L65" class="LineNr"> 65 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
<span id="L66" class="LineNr"> 66 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> <span class="Constant">&quot;call&quot;</span><span class="Delimiter">,</span> CALL<span class="Delimiter">);</span>
<span id="L67" class="LineNr"> 67 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span id="L68" class="LineNr"> 68 </span><span class="Normal">case</span> CALL: <span class="Delimiter">{</span>
<span id="L69" class="LineNr"> 69 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L70" class="LineNr"> 70 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'call' requires at least one ingredient (the <a href='010vm.cc.html#L19'>recipe</a> to call)\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L71" class="LineNr"> 71 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L72" class="LineNr"> 72 </span>  <span class="Delimiter">}</span>
<span id="L73" class="LineNr"> 73 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_recipe<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L74" class="LineNr"> 74 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;first ingredient of 'call' should be a <a href='010vm.cc.html#L19'>recipe</a>, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L75" class="LineNr"> 75 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L76" class="LineNr"> 76 </span>  <span class="Delimiter">}</span>
<span id="L77" class="LineNr"> 77 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L78" class="LineNr"> 78 </span><span class="Delimiter">}</span>
<span id="L79" class="LineNr"> 79 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span id="L80" class="LineNr"> 80 </span><span class="Normal">case</span> CALL: <span class="Delimiter">{</span>
<span id="L81" class="LineNr"> 81 </span>  <span class="Comment">// Begin Call</span>
<span id="L82" class="LineNr"> 82 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special">Trace_stream</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L83" class="LineNr"> 83 </span>    ++<span class="Special">Trace_stream</span><span class="Delimiter">-&gt;</span>callstack_depth<span class="Delimiter">;</span>
<span id="L84" class="LineNr"> 84 </span>    <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;trace&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;indirect 'call': incrementing callstack depth to &quot;</span> &lt;&lt; <span class="Special">Trace_stream</span><span class="Delimiter">-&gt;</span>callstack_depth &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L85" class="LineNr"> 85 </span>    assert<span class="Delimiter">(</span><span class="Special">Trace_stream</span><span class="Delimiter">-&gt;</span>callstack_depth &lt; <span class="Constant">9000</span><span class="Delimiter">);</span>  <span class="Comment">// 9998-101 plus cushion</span>
<span id="L86" class="LineNr"> 86 </span>  <span class="Delimiter">}</span>
<span id="L87" class="LineNr"> 87 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L88" class="LineNr"> 88 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to call empty <a href='010vm.cc.html#L19'>recipe</a> in '&quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L89" class="LineNr"> 89 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L90" class="LineNr"> 90 </span>  <span class="Delimiter">}</span>
<span id="L91" class="LineNr"> 91 </span>  <span class="Normal">const</span> call&amp; caller_frame = <a href='026call.cc.html#L83'>current_call</a><span class="Delimiter">();</span>
<span id="L92" class="LineNr"> 92 </span>  <a href='010vm.cc.html#L33'>instruction</a><span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> call_instruction = <a href='026call.cc.html#L88'>to_instruction</a><span class="Delimiter">(</span>caller_frame<span class="Delimiter">);</span>
<span id="L93" class="LineNr"> 93 </span>  call_instruction<span class="Delimiter">.</span>operation = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L94" class="LineNr"> 94 </span>  call_instruction<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>call_instruction<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">());</span>
<span id="L95" class="LineNr"> 95 </span>  <span class="Special">Current_routine</span><span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>call<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
<span id="L96" class="LineNr"> 96 </span>  ingredients<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">());</span>  <span class="Comment">// drop the callee</span>
<span id="L97" class="LineNr"> 97 </span>  finish_call_housekeeping<span class="Delimiter">(</span>call_instruction<span class="Delimiter">,</span> ingredients<span class="Delimiter">);</span>
<span id="L98" class="LineNr"> 98 </span>  <span class="Comment">// not done with caller</span>
<span id="L99" class="LineNr"> 99 </span>  write_products =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L100" class="LineNr">100 </span>  fall_through_to_next_instruction =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L101" class="LineNr">101 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L102" class="LineNr">102 </span><span class="Delimiter">}</span>
<span id="L103" class="LineNr">103 </span>
<span id="L104" class="LineNr">104 </span><span class="Delimiter">:(scenario call_variable)</span>
<span id="L105" class="LineNr">105 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L106" class="LineNr">106 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> number<span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f
<span id="L107" class="LineNr">107 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>call <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> number<span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)},</span> <span class="Constant">34</span>
<span id="L108" class="LineNr">108 </span>]
<span id="L109" class="LineNr">109 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L110" class="LineNr">110 </span>  local-scope
<span id="L111" class="LineNr">111 </span>  load-ingredients
<span id="L112" class="LineNr">112 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L113" class="LineNr">113 </span>]
<span id="L114" class="LineNr">114 </span><span class="traceContains">+mem: storing 34 in location 2</span>
<span id="L115" class="LineNr">115 </span>
<span id="L116" class="LineNr">116 </span><span class="Delimiter">:(scenario call_literal_recipe_repeatedly)</span>
<span id="L117" class="LineNr">117 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L118" class="LineNr">118 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>call f<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L119" class="LineNr">119 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>call f<span class="Delimiter">,</span> <span class="Constant">35</span>
<span id="L120" class="LineNr">120 </span>]
<span id="L121" class="LineNr">121 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L122" class="LineNr">122 </span>  local-scope
<span id="L123" class="LineNr">123 </span>  load-ingredients
<span id="L124" class="LineNr">124 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L125" class="LineNr">125 </span>]
<span id="L126" class="LineNr">126 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L127" class="LineNr">127 </span><span class="traceContains">+mem: storing 35 in location 1</span>
<span id="L128" class="LineNr">128 </span>
<span id="L129" class="LineNr">129 </span><span class="Delimiter">:(scenario call_shape_shifting_recipe)</span>
<span id="L130" class="LineNr">130 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L131" class="LineNr">131 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>call f<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L132" class="LineNr">132 </span>]
<span id="L133" class="LineNr">133 </span><span class="muRecipe">def</span> f x:_elem<span class="muRecipe"> -&gt; </span>y:_elem [
<span id="L134" class="LineNr">134 </span>  local-scope
<span id="L135" class="LineNr">135 </span>  load-ingredients
<span id="L136" class="LineNr">136 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L137" class="LineNr">137 </span>]
<span id="L138" class="LineNr">138 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L139" class="LineNr">139 </span>
<span id="L140" class="LineNr">140 </span><span class="Delimiter">:(scenario call_shape_shifting_recipe_inside_shape_shifting_recipe)</span>
<span id="L141" class="LineNr">141 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L142" class="LineNr">142 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>f <span class="Constant">34</span>
<span id="L143" class="LineNr">143 </span>]
<span id="L144" class="LineNr">144 </span><span class="muRecipe">def</span> f x:_elem<span class="muRecipe"> -&gt; </span>y:_elem [
<span id="L145" class="LineNr">145 </span>  local-scope
<span id="L146" class="LineNr">146 </span>  load-ingredients
<span id="L147" class="LineNr">147 </span>  y<span class="Special"> &lt;- </span>call g x
<span id="L148" class="LineNr">148 </span>]
<span id="L149" class="LineNr">149 </span><span class="muRecipe">def</span> g x:_elem<span class="muRecipe"> -&gt; </span>y:_elem [
<span id="L150" class="LineNr">150 </span>  local-scope
<span id="L151" class="LineNr">151 </span>  load-ingredients
<span id="L152" class="LineNr">152 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L153" class="LineNr">153 </span>]
<span id="L154" class="LineNr">154 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L155" class="LineNr">155 </span>
<span id="L156" class="LineNr">156 </span><span class="Delimiter">:(scenario call_shape_shifting_recipe_repeatedly_inside_shape_shifting_recipe)</span>
<span id="L157" class="LineNr">157 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L158" class="LineNr">158 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>f <span class="Constant">34</span>
<span id="L159" class="LineNr">159 </span>]
<span id="L160" class="LineNr">160 </span><span class="muRecipe">def</span> f x:_elem<span class="muRecipe"> -&gt; </span>y:_elem [
<span id="L161" class="LineNr">161 </span>  local-scope
<span id="L162" class="LineNr">162 </span>  load-ingredients
<span id="L163" class="LineNr">163 </span>  y<span class="Special"> &lt;- </span>call g x
<span id="L164" class="LineNr">164 </span>  y<span class="Special"> &lt;- </span>call g x
<span id="L165" class="LineNr">165 </span>]
<span id="L166" class="LineNr">166 </span><span class="muRecipe">def</span> g x:_elem<span class="muRecipe"> -&gt; </span>y:_elem [
<span id="L167" class="LineNr">167 </span>  local-scope
<span id="L168" class="LineNr">168 </span>  load-ingredients
<span id="L169" class="LineNr">169 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L170" class="LineNr">170 </span>]
<span id="L171" class="LineNr">171 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L172" class="LineNr">172 </span>
<span id="L173" class="LineNr">173 </span><span class="SalientComment">//:: check types for 'call' instructions</span>
<span id="L174" class="LineNr">174 </span>
<span id="L175" class="LineNr">175 </span><span class="Delimiter">:(scenario call_check_literal_recipe)</span>
<span id="L176" class="LineNr">176 </span><span class="Special">% Hide_errors = true;</span>
<span id="L177" class="LineNr">177 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L178" class="LineNr">178 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>call f<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L179" class="LineNr">179 </span>]
<span id="L180" class="LineNr">180 </span><span class="muRecipe">def</span> f x:point<span class="muRecipe"> -&gt; </span>y:point [
<span id="L181" class="LineNr">181 </span>  local-scope
<span id="L182" class="LineNr">182 </span>  load-ingredients
<span id="L183" class="LineNr">183 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L184" class="LineNr">184 </span>]
<span id="L185" class="LineNr">185 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: ingredient 0 has the wrong type at '1:num &lt;- call f, 34'</span>
<span id="L186" class="LineNr">186 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: product 0 has the wrong type at '1:num &lt;- call f, 34'</span>
<span id="L187" class="LineNr">187 </span>
<span id="L188" class="LineNr">188 </span><span class="Delimiter">:(scenario call_check_variable_recipe)</span>
<span id="L189" class="LineNr">189 </span><span class="Special">% Hide_errors = true;</span>
<span id="L190" class="LineNr">190 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L191" class="LineNr">191 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> point<span class="muRecipe"> -&gt; </span>point<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f
<span id="L192" class="LineNr">192 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>call <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> point<span class="muRecipe"> -&gt; </span>point<span class="Delimiter">)},</span> <span class="Constant">34</span>
<span id="L193" class="LineNr">193 </span>]
<span id="L194" class="LineNr">194 </span><span class="muRecipe">def</span> f x:point<span class="muRecipe"> -&gt; </span>y:point [
<span id="L195" class="LineNr">195 </span>  local-scope
<span id="L196" class="LineNr">196 </span>  load-ingredients
<span id="L197" class="LineNr">197 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L198" class="LineNr">198 </span>]
<span id="L199" class="LineNr">199 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: ingredient 0 has the wrong type at '2:num &lt;- call {1: (recipe point -&gt; point)}, 34'</span>
<span id="L200" class="LineNr">200 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: product 0 has the wrong type at '2:num &lt;- call {1: (recipe point -&gt; point)}, 34'</span>
<span id="L201" class="LineNr">201 </span>
<span id="L202" class="LineNr">202 </span><span class="Delimiter">:(before &quot;End resolve_ambiguous_call(r, index, inst, caller_recipe) Special-cases&quot;)</span>
<span id="L203" class="LineNr">203 </span><span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;call&quot;</span> &amp;&amp; !inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; <a href='072recipe.cc.html#L208'>is_recipe_literal</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L204" class="LineNr">204 </span>  <a href='072recipe.cc.html#L211'>resolve_indirect_ambiguous_call</a><span class="Delimiter">(</span>r<span class="Delimiter">,</span> index<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span id="L205" class="LineNr">205 </span>  <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L206" class="LineNr">206 </span><span class="Delimiter">}</span>
<span id="L207" class="LineNr">207 </span><span class="Delimiter">:(code)</span>
<span id="L208" class="LineNr">208 </span><span class="Normal">bool</span> <a href='072recipe.cc.html#L208'>is_recipe_literal</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L209" class="LineNr">209 </span>  <span class="Identifier">return</span> x<span class="Delimiter">.</span>type &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;recipe-literal&quot;</span><span class="Delimiter">;</span>
<span id="L210" class="LineNr">210 </span><span class="Delimiter">}</span>
<span id="L211" class="LineNr">211 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L211'>resolve_indirect_ambiguous_call</a><span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">,</span> <span class="Normal">int</span> index<span class="Delimiter">,</span> instruction&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> recipe&amp; caller_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L212" class="LineNr">212 </span>  <a href='010vm.cc.html#L33'>instruction</a> inst2<span class="Delimiter">;</span>
<span id="L213" class="LineNr">213 </span>  inst2<span class="Delimiter">.</span>name = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">;</span>
<span id="L214" class="LineNr">214 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip <a href='010vm.cc.html#L19'>recipe</a></span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span>
<span id="L215" class="LineNr">215 </span>    inst2<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span id="L216" class="LineNr">216 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span>
<span id="L217" class="LineNr">217 </span>    inst2<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span id="L218" class="LineNr">218 </span>  <a href='054static_dispatch.cc.html#L173'>resolve_ambiguous_call</a><span class="Delimiter">(</span>r<span class="Delimiter">,</span> index<span class="Delimiter">,</span> inst2<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span id="L219" class="LineNr">219 </span>  inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name = inst2<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
<span id="L220" class="LineNr">220 </span>  inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span><a href='010vm.cc.html#L67'>set_value</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> inst2<span class="Delimiter">.</span>name<span class="Delimiter">));</span>
<span id="L221" class="LineNr">221 </span><span class="Delimiter">}</span>
<span id="L222" class="LineNr">222 </span>
<span id="L223" class="LineNr">223 </span><span class="Delimiter">:(after &quot;Transform.push_back(check_instruction)&quot;)</span>
<span id="L224" class="LineNr">224 </span><span class="Special">Transform</span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='072recipe.cc.html#L226'>check_indirect_calls_against_header</a><span class="Delimiter">);</span>  <span class="Comment">// idempotent</span>
<span id="L225" class="LineNr">225 </span><span class="Delimiter">:(code)</span>
<span id="L226" class="LineNr">226 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L226'>check_indirect_calls_against_header</a><span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L227" class="LineNr">227 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;--- type-check 'call' instructions inside <a href='010vm.cc.html#L19'>recipe</a> &quot;</span> &lt;&lt; get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>name &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L228" class="LineNr">228 </span>  <span class="Normal">const</span> recipe&amp; caller = get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">);</span>
<span id="L229" class="LineNr">229 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L230" class="LineNr">230 </span>    <span class="Normal">const</span> instruction&amp; inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L231" class="LineNr">231 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!is_indirect_call<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L232" class="LineNr">232 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// error raised above</span>
<span id="L233" class="LineNr">233 </span>    <span class="Normal">const</span> reagent&amp; callee = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L234" class="LineNr">234 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_recipe<span class="Delimiter">(</span>callee<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>  <span class="Comment">// error raised above</span>
<span id="L235" class="LineNr">235 </span>    <span class="Normal">const</span> <a href='010vm.cc.html#L19'>recipe</a> callee_header = is_literal<span class="Delimiter">(</span>callee<span class="Delimiter">)</span> ? get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> callee<span class="Delimiter">.</span>value<span class="Delimiter">)</span> : <a href='072recipe.cc.html#L268'>from_reagent</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
<span id="L236" class="LineNr">236 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!callee_header<span class="Delimiter">.</span>has_header<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L237" class="LineNr">237 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L257'>is_indirect_call_with_ingredients</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L238" class="LineNr">238 </span>      <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span>  i &lt; min<span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span>+<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L239" class="LineNr">239 </span>        <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i-<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span id="L240" class="LineNr">240 </span>          <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredient &quot;</span> &lt;&lt; i-<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span> &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L241" class="LineNr">241 </span>      <span class="Delimiter">}</span>
<span id="L242" class="LineNr">242 </span>    <span class="Delimiter">}</span>
<span id="L243" class="LineNr">243 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L262'>is_indirect_call_with_products</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L244" class="LineNr">244 </span>      <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; min<span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">),</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>products<span class="Delimiter">));</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L245" class="LineNr">245 </span>        <span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L246" class="LineNr">246 </span>        <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span id="L247" class="LineNr">247 </span>          <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L248" class="LineNr">248 </span>      <span class="Delimiter">}</span>
<span id="L249" class="LineNr">249 </span>    <span class="Delimiter">}</span>
<span id="L250" class="LineNr">250 </span>  <span class="Delimiter">}</span>
<span id="L251" class="LineNr">251 </span><span class="Delimiter">}</span>
<span id="L252" class="LineNr">252 </span>
<span id="L253" class="LineNr">253 </span><span class="Normal">bool</span> <a href='072recipe.cc.html#L253'>is_indirect_call</a><span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L254" class="LineNr">254 </span>  <span class="Identifier">return</span> <a href='072recipe.cc.html#L257'>is_indirect_call_with_ingredients</a><span class="Delimiter">(</span>r<span class="Delimiter">)</span> || <a href='072recipe.cc.html#L262'>is_indirect_call_with_products</a><span class="Delimiter">(</span>r<span class="Delimiter">);</span>
<span id="L255" class="LineNr">255 </span><span class="Delimiter">}</span>
<span id="L256" class="LineNr">256 </span>
<span id="L257" class="LineNr">257 </span><span class="Normal">bool</span> <a href='072recipe.cc.html#L257'>is_indirect_call_with_ingredients</a><span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L258" class="LineNr">258 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>r == CALL<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L259" class="LineNr">259 </span>  <span class="Comment">// End is_indirect_call_with_ingredients Special-cases</span>
<span id="L260" class="LineNr">260 </span>  <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L261" class="LineNr">261 </span><span class="Delimiter">}</span>
<span id="L262" class="LineNr">262 </span><span class="Normal">bool</span> <a href='072recipe.cc.html#L262'>is_indirect_call_with_products</a><span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L263" class="LineNr">263 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>r == CALL<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L264" class="LineNr">264 </span>  <span class="Comment">// End is_indirect_call_with_products Special-cases</span>
<span id="L265" class="LineNr">265 </span>  <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L266" class="LineNr">266 </span><span class="Delimiter">}</span>
<span id="L267" class="LineNr">267 </span>
<span id="L268" class="LineNr">268 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> <a href='072recipe.cc.html#L268'>from_reagent</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L269" class="LineNr">269 </span>  assert<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span id="L270" class="LineNr">270 </span>  <a href='010vm.cc.html#L19'>recipe</a> result_header<span class="Delimiter">;</span>  <span class="Comment">// will contain only ingredients and products, nothing else</span>
<span id="L271" class="LineNr">271 </span>  result_header<span class="Delimiter">.</span>has_header =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L272" class="LineNr">272 </span>  <span class="Comment">// Begin Reagent-&gt;Recipe(r, recipe_header)</span>
<span id="L273" class="LineNr">273 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L274" class="LineNr">274 </span>    assert<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;recipe&quot;</span><span class="Delimiter">);</span>
<span id="L275" class="LineNr">275 </span>    <span class="Identifier">return</span> result_header<span class="Delimiter">;</span>
<span id="L276" class="LineNr">276 </span>  <span class="Delimiter">}</span>
<span id="L277" class="LineNr">277 </span>  <span class="Normal">const</span> type_tree* root_type = r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom ? r<span class="Delimiter">.</span>type : r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L278" class="LineNr">278 </span>  assert<span class="Delimiter">(</span>root_type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">);</span>
<span id="L279" class="LineNr">279 </span>  assert<span class="Delimiter">(</span>root_type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;recipe&quot;</span><span class="Delimiter">);</span>
<span id="L280" class="LineNr">280 </span>  <span class="Normal">const</span> type_tree* curr = r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
<span id="L281" class="LineNr">281 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">nada</span><span class="Comment">*/</span><span class="Delimiter">;</span>  curr &amp;&amp; !curr<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">;</span>  curr = curr<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L282" class="LineNr">282 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;-&gt;&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L283" class="LineNr">283 </span>      curr = curr<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>  <span class="Comment">// skip delimiter</span>
<span id="L284" class="LineNr">284 </span>      <span class="Identifier">goto</span> read_products<span class="Delimiter">;</span>
<span id="L285" class="LineNr">285 </span>    <span class="Delimiter">}</span>
<span id="L286" class="LineNr">286 </span>    result_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='072recipe.cc.html#L330'>next_recipe_reagent</a><span class="Delimiter">(</span>curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">));</span>
<span id="L287" class="LineNr">287 </span>  <span class="Delimiter">}</span>
<span id="L288" class="LineNr">288 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L289" class="LineNr">289 </span>    assert<span class="Delimiter">(</span>curr<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">);</span>
<span id="L290" class="LineNr">290 </span>    result_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='072recipe.cc.html#L330'>next_recipe_reagent</a><span class="Delimiter">(</span>curr<span class="Delimiter">));</span>
<span id="L291" class="LineNr">291 </span>    <span class="Identifier">return</span> result_header<span class="Delimiter">;</span>  <span class="Comment">// no products</span>
<span id="L292" class="LineNr">292 </span>  <span class="Delimiter">}</span>
<span id="L293" class="LineNr">293 </span>  <span class="Normal">read_products</span>:
<span id="L294" class="LineNr">294 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">nada</span><span class="Comment">*/</span><span class="Delimiter">;</span>  curr &amp;&amp; !curr<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">;</span>  curr = curr<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span>
<span id="L295" class="LineNr">295 </span>    result_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='072recipe.cc.html#L330'>next_recipe_reagent</a><span class="Delimiter">(</span>curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">));</span>
<span id="L296" class="LineNr">296 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L297" class="LineNr">297 </span>    assert<span class="Delimiter">(</span>curr<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">);</span>
<span id="L298" class="LineNr">298 </span>    result_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='072recipe.cc.html#L330'>next_recipe_reagent</a><span class="Delimiter">(</span>curr<span class="Delimiter">));</span>
<span id="L299" class="LineNr">299 </span>  <span class="Delimiter">}</span>
<span id="L300" class="LineNr">300 </span>  <span class="Identifier">return</span> result_header<span class="Delimiter">;</span>
<span id="L301" class="LineNr">301 </span><span class="Delimiter">}</span>
<span id="L302" class="LineNr">302 </span>
<span id="L303" class="LineNr">303 </span><span class="Delimiter">:(before &quot;End Unit Tests&quot;)</span>
<span id="L304" class="LineNr">304 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L304'>test_from_reagent_atomic</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L305" class="LineNr">305 </span>  reagent a<span class="Delimiter">(</span><span class="Constant">&quot;{f: recipe}&quot;</span><span class="Delimiter">);</span>
<span id="L306" class="LineNr">306 </span>  <a href='010vm.cc.html#L19'>recipe</a> r_header = <a href='072recipe.cc.html#L268'>from_reagent</a><span class="Delimiter">(</span>a<span class="Delimiter">);</span>
<span id="L307" class="LineNr">307 </span>  <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span id="L308" class="LineNr">308 </span>  <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span id="L309" class="LineNr">309 </span><span class="Delimiter">}</span>
<span id="L310" class="LineNr">310 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L310'>test_from_reagent_non_atomic</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L311" class="LineNr">311 </span>  reagent a<span class="Delimiter">(</span><span class="Constant">&quot;{f: (recipe number -&gt; number)}&quot;</span><span class="Delimiter">);</span>
<span id="L312" class="LineNr">312 </span>  <a href='010vm.cc.html#L19'>recipe</a> r_header = <a href='072recipe.cc.html#L268'>from_reagent</a><span class="Delimiter">(</span>a<span class="Delimiter">);</span>
<span id="L313" class="LineNr">313 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L314" class="LineNr">314 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L315" class="LineNr">315 </span><span class="Delimiter">}</span>
<span id="L316" class="LineNr">316 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L316'>test_from_reagent_reads_ingredient_at_end</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L317" class="LineNr">317 </span>  reagent a<span class="Delimiter">(</span><span class="Constant">&quot;{f: (recipe number number)}&quot;</span><span class="Delimiter">);</span>
<span id="L318" class="LineNr">318 </span>  <a href='010vm.cc.html#L19'>recipe</a> r_header = <a href='072recipe.cc.html#L268'>from_reagent</a><span class="Delimiter">(</span>a<span class="Delimiter">);</span>
<span id="L319" class="LineNr">319 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L320" class="LineNr">320 </span>  <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span id="L321" class="LineNr">321 </span><span class="Delimiter">}</span>
<span id="L322" class="LineNr">322 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L322'>test_from_reagent_reads_sole_ingredient_at_end</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L323" class="LineNr">323 </span>  reagent a<span class="Delimiter">(</span><span class="Constant">&quot;{f: (recipe number)}&quot;</span><span class="Delimiter">);</span>
<span id="L324" class="LineNr">324 </span>  <a href='010vm.cc.html#L19'>recipe</a> r_header = <a href='072recipe.cc.html#L268'>from_reagent</a><span class="Delimiter">(</span>a<span class="Delimiter">);</span>
<span id="L325" class="LineNr">325 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L326" class="LineNr">326 </span>  <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span id="L327" class="LineNr">327 </span><span class="Delimiter">}</span>
<span id="L328" class="LineNr">328 </span>
<span id="L329" class="LineNr">329 </span><span class="Delimiter">:(code)</span>
<span id="L330" class="LineNr">330 </span>reagent <a href='072recipe.cc.html#L330'>next_recipe_reagent</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L331" class="LineNr">331 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">)</span> <span class="Identifier">return</span> reagent<span class="Delimiter">(</span><span class="Constant">&quot;recipe:&quot;</span>+curr<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
<span id="L332" class="LineNr">332 </span>  <span class="Identifier">return</span> reagent<span class="Delimiter">(</span><span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*curr<span class="Delimiter">));</span>
<span id="L333" class="LineNr">333 </span><span class="Delimiter">}</span>
<span id="L334" class="LineNr">334 </span>
<span id="L335" class="LineNr">335 </span><span class="Normal">bool</span> <a href='072recipe.cc.html#L335'>is_mu_recipe</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L336" class="LineNr">336 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L337" class="LineNr">337 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L338" class="LineNr">338 </span>    <span class="Comment">// End is_mu_recipe Atom Cases(r)</span>
<span id="L339" class="LineNr">339 </span>    <span class="Identifier">return</span> r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;recipe-literal&quot;</span><span class="Delimiter">;</span>
<span id="L340" class="LineNr">340 </span>  <span class="Delimiter">}</span>
<span id="L341" class="LineNr">341 </span>  <span class="Identifier">return</span> r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;recipe&quot;</span><span class="Delimiter">;</span>
<span id="L342" class="LineNr">342 </span><span class="Delimiter">}</span>
<span id="L343" class="LineNr">343 </span>
<span id="L344" class="LineNr">344 </span><span class="Delimiter">:(scenario copy_typecheck_recipe_variable)</span>
<span id="L345" class="LineNr">345 </span><span class="Special">% Hide_errors = true;</span>
<span id="L346" class="LineNr">346 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L347" class="LineNr">347 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>  <span class="Comment"># abc def</span>
<span id="L348" class="LineNr">348 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> number<span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f  <span class="Comment"># store literal in a matching variable</span>
<span id="L349" class="LineNr">349 </span>  <span class="Delimiter">{</span><span class="Constant">2</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> boolean<span class="muRecipe"> -&gt; </span>boolean<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> number<span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)}</span>  <span class="Comment"># mismatch between recipe variables</span>
<span id="L350" class="LineNr">350 </span>]
<span id="L351" class="LineNr">351 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L352" class="LineNr">352 </span>  local-scope
<span id="L353" class="LineNr">353 </span>  load-ingredients
<span id="L354" class="LineNr">354 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L355" class="LineNr">355 </span>]
<span id="L356" class="LineNr">356 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: can't copy '{1: (recipe number -&gt; number)}' to '{2: (recipe boolean -&gt; boolean)}'; types don't match</span>
<span id="L357" class="LineNr">357 </span>
<span id="L358" class="LineNr">358 </span><span class="Delimiter">:(scenario copy_typecheck_recipe_variable_2)</span>
<span id="L359" class="LineNr">359 </span><span class="Special">% Hide_errors = true;</span>
<span id="L360" class="LineNr">360 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L361" class="LineNr">361 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> number<span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f  <span class="Comment"># mismatch with a recipe literal</span>
<span id="L362" class="LineNr">362 </span>]
<span id="L363" class="LineNr">363 </span><span class="muRecipe">def</span> f x:<span class="Normal">bool</span><span class="muRecipe"> -&gt; </span>y:<span class="Normal">bool</span> [
<span id="L364" class="LineNr">364 </span>  local-scope
<span id="L365" class="LineNr">365 </span>  load-ingredients
<span id="L366" class="LineNr">366 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L367" class="LineNr">367 </span>]
<span id="L368" class="LineNr">368 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: can't copy 'f' to '{1: (recipe number -&gt; number)}'; types don't match</span>
<span id="L369" class="LineNr">369 </span>
<span id="L370" class="LineNr">370 </span><span class="Delimiter">:(before &quot;End Matching Types For Literal(to)&quot;)</span>
<span id="L371" class="LineNr">371 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L335'>is_mu_recipe</a><span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L372" class="LineNr">372 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> from<span class="Delimiter">.</span>value<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L373" class="LineNr">373 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;trying to store <a href='010vm.cc.html#L19'>recipe</a> &quot;</span> &lt;&lt; from<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; into &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>to<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but there's no such recipe\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L374" class="LineNr">374 </span>    <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L375" class="LineNr">375 </span>  <span class="Delimiter">}</span>
<span id="L376" class="LineNr">376 </span>  <span class="Normal">const</span> recipe&amp; rrhs = get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> from<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
<span id="L377" class="LineNr">377 </span>  <span class="Normal">const</span> recipe&amp; rlhs = <a href='072recipe.cc.html#L268'>from_reagent</a><span class="Delimiter">(</span>to<span class="Delimiter">);</span>
<span id="L378" class="LineNr">378 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; min<span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>rrhs<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L379" class="LineNr">379 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!types_match<span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> rrhs<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span id="L380" class="LineNr">380 </span>      <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L381" class="LineNr">381 </span>  <span class="Delimiter">}</span>
<span id="L382" class="LineNr">382 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; min<span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>products<span class="Delimiter">),</span> <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>rrhs<span class="Delimiter">.</span>products<span class="Delimiter">));</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L383" class="LineNr">383 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!types_match<span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> rrhs<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span id="L384" class="LineNr">384 </span>      <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L385" class="LineNr">385 </span>  <span class="Delimiter">}</span>
<span id="L386" class="LineNr">386 </span>  <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L387" class="LineNr">387 </span><span class="Delimiter">}</span>
<span id="L388" class="LineNr">388 </span>
<span id="L389" class="LineNr">389 </span><span class="Delimiter">:(scenario call_variable_compound_ingredient)</span>
<span id="L390" class="LineNr">390 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L391" class="LineNr">391 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> number<span class="Delimiter">)</span><span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f
<span id="L392" class="LineNr">392 </span>  <span class="Constant">2</span>:&amp;:num<span class="Special"> &lt;- </span>copy<span class="Constant"> null</span>
<span id="L393" class="LineNr">393 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>call <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> number<span class="Delimiter">)</span><span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)},</span> <span class="Constant">2</span>:&amp;:num
<span id="L394" class="LineNr">394 </span>]
<span id="L395" class="LineNr">395 </span><span class="muRecipe">def</span> f x:&amp;:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L396" class="LineNr">396 </span>  local-scope
<span id="L397" class="LineNr">397 </span>  load-ingredients
<span id="L398" class="LineNr">398 </span>  y<span class="Special"> &lt;- </span>deaddress x
<span id="L399" class="LineNr">399 </span>]
<span id="L400" class="LineNr">400 </span>$error: <span class="Constant">0</span>
<span id="L401" class="LineNr">401 </span>
<span id="L402" class="LineNr">402 </span><span class="Comment">//: make sure we don't accidentally break on a recipe literal</span>
<span id="L403" class="LineNr">403 </span><span class="Delimiter">:(scenario jump_forbidden_on_recipe_literals)</span>
<span id="L404" class="LineNr">404 </span><span class="Special">% Hide_errors = true;</span>
<span id="L405" class="LineNr">405 </span><span class="muRecipe">def</span> foo [
<span id="L406" class="LineNr">406 </span>  local-scope
<span id="L407" class="LineNr">407 </span>]
<span id="L408" class="LineNr">408 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L409" class="LineNr">409 </span>  local-scope
<span id="L410" class="LineNr">410 </span>  <span class="Delimiter">{</span>
<span id="L411" class="LineNr">411 </span>    <span class="Identifier">break</span>-<span class="Normal">if</span> foo
<span id="L412" class="LineNr">412 </span>  <span class="Delimiter">}</span>
<span id="L413" class="LineNr">413 </span>]
<span id="L414" class="LineNr">414 </span><span class="Comment"># error should be as if foo is not a recipe</span>
<span id="L415" class="LineNr">415 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: missing type for 'foo' in 'break-if foo'</span>
<span id="L416" class="LineNr">416 </span>
<span id="L417" class="LineNr">417 </span><span class="Delimiter">:(before &quot;End JUMP_IF Checks&quot;)</span>
<span id="L418" class="LineNr">418 </span><a href='072recipe.cc.html#L422'>check_for_recipe_literals</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">));</span>
<span id="L419" class="LineNr">419 </span><span class="Delimiter">:(before &quot;End JUMP_UNLESS Checks&quot;)</span>
<span id="L420" class="LineNr">420 </span><a href='072recipe.cc.html#L422'>check_for_recipe_literals</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">));</span>
<span id="L421" class="LineNr">421 </span><span class="Delimiter">:(code)</span>
<span id="L422" class="LineNr">422 </span><span class="Normal">void</span> <a href='072recipe.cc.html#L422'>check_for_recipe_literals</a><span class="Delimiter">(</span><span class="Normal">const</span> instruction&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> recipe&amp; caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L423" class="LineNr">423 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L424" class="LineNr">424 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L335'>is_mu_recipe</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L425" class="LineNr">425 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;missing type for '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;' in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L426" class="LineNr">426 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span>is_present_in_ingredients<span class="Delimiter">(</span>caller<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">))</span>
<span id="L427" class="LineNr">427 </span>        <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;  did you forget 'load-ingredients'?\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L428" class="LineNr">428 </span>    <span class="Delimiter">}</span>
<span id="L429" class="LineNr">429 </span>  <span class="Delimiter">}</span>
<span id="L430" class="LineNr">430 </span><span class="Delimiter">}</span>
<span id="L431" class="LineNr">431 </span>
<span id="L432" class="LineNr">432 </span><span class="Delimiter">:(scenario load_ingredients_missing_error_3)</span>
<span id="L433" class="LineNr">433 </span><span class="Special">% Hide_errors = true;</span>
<span id="L434" class="LineNr">434 </span><span class="muRecipe">def</span> foo <span class="Delimiter">{</span>f: <span class="Delimiter">(</span><a href='010vm.cc.html#L19'>recipe</a> num<span class="muRecipe"> -&gt; </span>num<span class="Delimiter">)}</span> [
<span id="L435" class="LineNr">435 </span>  local-scope
<span id="L436" class="LineNr">436 </span>  <span class="Normal">b</span>:num<span class="Special"> &lt;- </span>call f<span class="Delimiter">,</span> <span class="Constant">1</span>
<span id="L437" class="LineNr">437 </span>]
<span id="L438" class="LineNr">438 </span><span class="traceContains">+error: foo: missing type for 'f' in 'b:num &lt;- call f, 1'</span>
<span id="L439" class="LineNr">439 </span><span class="traceContains">+error:   did you forget 'load-ingredients'?</span>
<span id="L440" class="LineNr">440 </span>
<span id="L441" class="LineNr">441 </span><span class="Delimiter">:(before &quot;End Mu Types Initialization&quot;)</span>
<span id="L442" class="LineNr">442 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Type_abbreviations</span><span class="Delimiter">,</span> <span class="Constant">&quot;function&quot;</span><span class="Delimiter">,</span> <a href='019type_abbreviations.cc.html#L58'>new_type_tree</a><span class="Delimiter">(</span><span class="Constant">&quot;recipe&quot;</span><span class="Delimiter">));</span>
<span id="L443" class="LineNr">443 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Type_abbreviations</span><span class="Delimiter">,</span> <span class="Constant">&quot;fn&quot;</span><span class="Delimiter">,</span> <a href='019type_abbreviations.cc.html#L58'>new_type_tree</a><span class="Delimiter">(</span><span class="Constant">&quot;recipe&quot;</span><span class="Delimiter">));</span>
<span id="L444" class="LineNr">444 </span>
<span id="L445" class="LineNr">445 </span><span class="Comment">//: copying functions to variables</span>
<span id="L446" class="LineNr">446 </span>
<span id="L447" class="LineNr">447 </span><span class="Delimiter">:(scenario copy_recipe_to_variable)</span>
<span id="L448" class="LineNr">448 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L449" class="LineNr">449 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>fn number<span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f
<span id="L450" class="LineNr">450 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>call <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>function number<span class="muRecipe"> -&gt; </span>number<span class="Delimiter">)},</span> <span class="Constant">34</span>
<span id="L451" class="LineNr">451 </span>]
<span id="L452" class="LineNr">452 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L453" class="LineNr">453 </span>  local-scope
<span id="L454" class="LineNr">454 </span>  load-ingredients
<span id="L455" class="LineNr">455 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L456" class="LineNr">456 </span>]
<span id="L457" class="LineNr">457 </span><span class="traceContains">+mem: storing 34 in location 2</span>
<span id="L458" class="LineNr">458 </span>
<span id="L459" class="LineNr">459 </span><span class="Delimiter">:(scenario copy_overloaded_recipe_to_variable)</span>
<span id="L460" class="LineNr">460 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L461" class="LineNr">461 </span>  local-scope
<span id="L462" class="LineNr">462 </span>  <span class="Delimiter">{</span>x: <span class="Delimiter">(</span>fn num<span class="muRecipe"> -&gt; </span>num<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f
<span id="L463" class="LineNr">463 </span>  <span class="Constant">1</span>:num/<span class="Special">raw &lt;- </span>call x<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L464" class="LineNr">464 </span>]
<span id="L465" class="LineNr">465 </span><span class="Comment"># variant f</span>
<span id="L466" class="LineNr">466 </span><span class="muRecipe">def</span> f x:<span class="Normal">bool</span><span class="muRecipe"> -&gt; </span>y:<span class="Normal">bool</span> [
<span id="L467" class="LineNr">467 </span>  local-scope
<span id="L468" class="LineNr">468 </span>  load-ingredients
<span id="L469" class="LineNr">469 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L470" class="LineNr">470 </span>]
<span id="L471" class="LineNr">471 </span><span class="Comment"># variant f_2</span>
<span id="L472" class="LineNr">472 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L473" class="LineNr">473 </span>  local-scope
<span id="L474" class="LineNr">474 </span>  load-ingredients
<span id="L475" class="LineNr">475 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L476" class="LineNr">476 </span>]
<span id="L477" class="LineNr">477 </span><span class="Comment"># x contains f_2</span>
<span id="L478" class="LineNr">478 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L479" class="LineNr">479 </span>
<span id="L480" class="LineNr">480 </span><span class="Delimiter">:(before &quot;End resolve_ambiguous_call(r, index, inst, caller_recipe) Special-cases&quot;)</span>
<span id="L481" class="LineNr">481 </span><span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;copy&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L482" class="LineNr">482 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L483" class="LineNr">483 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!is_recipe_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L484" class="LineNr">484 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='054static_dispatch.cc.html#L326'>non_ghost_size</a><span class="Delimiter">(</span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span><span class="Special">Recipe_variants</span><span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">))</span> &lt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L485" class="LineNr">485 </span>    <span class="Comment">// potentially overloaded recipe</span>
<span id="L486" class="LineNr">486 </span>    string new_name = <a href='054static_dispatch.cc.html#L173'>resolve_ambiguous_call</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> r<span class="Delimiter">,</span> index<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span id="L487" class="LineNr">487 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>new_name == <span class="Constant">&quot;&quot;</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L488" class="LineNr">488 </span>    inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name = new_name<span class="Delimiter">;</span>
<span id="L489" class="LineNr">489 </span>    inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>value = get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> new_name<span class="Delimiter">);</span>
<span id="L490" class="LineNr">490 </span>  <span class="Delimiter">}</span>
<span id="L491" class="LineNr">491 </span>  <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L492" class="LineNr">492 </span><span class="Delimiter">}</span>
<span id="L493" class="LineNr">493 </span><span class="Delimiter">:(code)</span>
<span id="L494" class="LineNr">494 </span>string <a href='054static_dispatch.cc.html#L173'>resolve_ambiguous_call</a><span class="Delimiter">(</span><span class="Normal">const</span> string&amp; recipe_name<span class="Delimiter">,</span> <span class="Normal">const</span> reagent&amp; call_types<span class="Delimiter">,</span> <span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">,</span> <span class="Normal">int</span> index<span class="Delimiter">,</span> <span class="Normal">const</span> recipe&amp; caller_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L495" class="LineNr">495 </span>  <a href='010vm.cc.html#L33'>instruction</a> inst<span class="Delimiter">;</span>
<span id="L496" class="LineNr">496 </span>  inst<span class="Delimiter">.</span>name = recipe_name<span class="Delimiter">;</span>
<span id="L497" class="LineNr">497 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_recipe<span class="Delimiter">(</span>call_types<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">;</span>  <span class="Comment">// error raised elsewhere</span>
<span id="L498" class="LineNr">498 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='072recipe.cc.html#L208'>is_recipe_literal</a><span class="Delimiter">(</span>call_types<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">;</span>  <span class="Comment">// error raised elsewhere</span>
<span id="L499" class="LineNr">499 </span>  construct_fake_call<span class="Delimiter">(</span>call_types<span class="Delimiter">,</span> inst<span class="Delimiter">);</span>
<span id="L500" class="LineNr">500 </span>  <a href='054static_dispatch.cc.html#L173'>resolve_ambiguous_call</a><span class="Delimiter">(</span>r<span class="Delimiter">,</span> index<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span id="L501" class="LineNr">501 </span>  <span class="Identifier">return</span> inst<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
<span id="L502" class="LineNr">502 </span><span class="Delimiter">}</span>
<span id="L503" class="LineNr">503 </span><span class="Normal">void</span> construct_fake_call<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; recipe_var<span class="Delimiter">,</span> instruction&amp; out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L504" class="LineNr">504 </span>  assert<span class="Delimiter">(</span>recipe_var<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;recipe&quot;</span><span class="Delimiter">);</span>
<span id="L505" class="LineNr">505 </span>  type_tree* stem = <span class="Constant">NULL</span><span class="Delimiter">;</span>
<span id="L506" class="LineNr">506 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>stem = recipe_var<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>  stem &amp;&amp; stem<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name != <span class="Constant">&quot;-&gt;&quot;</span><span class="Delimiter">;</span>  stem = stem<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span>
<span id="L507" class="LineNr">507 </span>    out<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>copy<span class="Delimiter">(</span>stem<span class="Delimiter">-&gt;</span>left<span class="Delimiter">));</span>
<span id="L508" class="LineNr">508 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>stem == <span class="Constant">NULL</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L509" class="LineNr">509 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">skip '-&gt;'</span><span class="Comment">*/</span>stem = stem<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>  stem<span class="Delimiter">;</span>  stem = stem<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span>
<span id="L510" class="LineNr">510 </span>    out<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>copy<span class="Delimiter">(</span>stem<span class="Delimiter">-&gt;</span>left<span class="Delimiter">));</span>
<span id="L511" class="LineNr">511 </span><span class="Delimiter">}</span>
<span id="L512" class="LineNr">512 </span>
<span id="L513" class="LineNr">513 </span><span class="Delimiter">:(scenario copy_shape_shifting_recipe_to_variable)</span>
<span id="L514" class="LineNr">514 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L515" class="LineNr">515 </span>  local-scope
<span id="L516" class="LineNr">516 </span>  <span class="Delimiter">{</span>x: <span class="Delimiter">(</span>fn num<span class="muRecipe"> -&gt; </span>num<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy f
<span id="L517" class="LineNr">517 </span>  <span class="Constant">1</span>:num/<span class="Special">raw &lt;- </span>call x<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L518" class="LineNr">518 </span>]
<span id="L519" class="LineNr">519 </span><span class="muRecipe">def</span> f x:_elem<span class="muRecipe"> -&gt; </span>y:_elem [
<span id="L520" class="LineNr">520 </span>  local-scope
<span id="L521" class="LineNr">521 </span>  load-inputs
<span id="L522" class="LineNr">522 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L523" class="LineNr">523 </span>]
<span id="L524" class="LineNr">524 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L525" class="LineNr">525 </span>
<span id="L526" class="LineNr">526 </span><span class="Comment">//: passing function literals to (higher-order) functions</span>
<span id="L527" class="LineNr">527 </span>
<span id="L528" class="LineNr">528 </span><span class="Delimiter">:(scenario pass_overloaded_recipe_literal_to_ingredient)</span>
<span id="L529" class="LineNr">529 </span><span class="Comment"># like copy_overloaded_recipe_to_variable except we bind 'x' in the course of</span>
<span id="L530" class="LineNr">530 </span><span class="Comment"># a 'call' rather than 'copy'</span>
<span id="L531" class="LineNr">531 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L532" class="LineNr">532 </span>  <span class="Constant">1</span>:num<span class="Special"> &lt;- </span>g f
<span id="L533" class="LineNr">533 </span>]
<span id="L534" class="LineNr">534 </span><span class="muRecipe">def</span> g <span class="Delimiter">{</span>x: <span class="Delimiter">(</span>fn num<span class="muRecipe"> -&gt; </span>num<span class="Delimiter">)}</span><span class="muRecipe"> -&gt; </span>result:num [
<span id="L535" class="LineNr">535 </span>  local-scope
<span id="L536" class="LineNr">536 </span>  load-ingredients
<span id="L537" class="LineNr">537 </span>  result<span class="Special"> &lt;- </span>call x<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L538" class="LineNr">538 </span>]
<span id="L539" class="LineNr">539 </span><span class="Comment"># variant f</span>
<span id="L540" class="LineNr">540 </span><span class="muRecipe">def</span> f x:<span class="Normal">bool</span><span class="muRecipe"> -&gt; </span>y:<span class="Normal">bool</span> [
<span id="L541" class="LineNr">541 </span>  local-scope
<span id="L542" class="LineNr">542 </span>  load-ingredients
<span id="L543" class="LineNr">543 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L544" class="LineNr">544 </span>]
<span id="L545" class="LineNr">545 </span><span class="Comment"># variant f_2</span>
<span id="L546" class="LineNr">546 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L547" class="LineNr">547 </span>  local-scope
<span id="L548" class="LineNr">548 </span>  load-ingredients
<span id="L549" class="LineNr">549 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L550" class="LineNr">550 </span>]
<span id="L551" class="LineNr">551 </span><span class="Comment"># x contains f_2</span>
<span id="L552" class="LineNr">552 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L553" class="LineNr">553 </span>
<span id="L554" class="LineNr">554 </span><span class="Delimiter">:(after &quot;End resolve_ambiguous_call(r, index, inst, caller_recipe) Special-cases&quot;)</span>
<span id="L555" class="LineNr">555 </span><span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L556" class="LineNr">556 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_recipe<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L557" class="LineNr">557 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='054static_dispatch.cc.html#L326'>non_ghost_size</a><span class="Delimiter">(</span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span><span class="Special">Recipe_variants</span><span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">))</span> &lt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L558" class="LineNr">558 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> inst<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt; <a href='010vm.cc.html#L198'>MAX_PRIMITIVE_RECIPES</a><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L559" class="LineNr">559 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='054static_dispatch.cc.html#L326'>non_ghost_size</a><span class="Delimiter">(</span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span><span class="Special">Recipe_variants</span><span class="Delimiter">,</span> inst<span class="Delimiter">.</span>name<span class="Delimiter">))</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L560" class="LineNr">560 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;sorry, we're not yet smart enough to simultaneously guess which overloads you want for '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' and '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L561" class="LineNr">561 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L562" class="LineNr">562 </span>  <span class="Delimiter">}</span>
<span id="L563" class="LineNr">563 </span>  <span class="Normal">const</span> recipe&amp; callee = get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> inst<span class="Delimiter">.</span>name<span class="Delimiter">));</span>
<span id="L564" class="LineNr">564 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!callee<span class="Delimiter">.</span>has_header<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L565" class="LineNr">565 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;sorry, we're not yet smart enough to guess which variant of '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name &lt;&lt; <span class="Constant">&quot;' you want, when the caller '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' doesn't have a header\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L566" class="LineNr">566 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L567" class="LineNr">567 </span>  <span class="Delimiter">}</span>
<span id="L568" class="LineNr">568 </span>  string new_name = <a href='054static_dispatch.cc.html#L173'>resolve_ambiguous_call</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">,</span> callee<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> r<span class="Delimiter">,</span> index<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span id="L569" class="LineNr">569 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>new_name != <span class="Constant">&quot;&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L570" class="LineNr">570 </span>    inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name = new_name<span class="Delimiter">;</span>
<span id="L571" class="LineNr">571 </span>    inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>value = get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> new_name<span class="Delimiter">);</span>
<span id="L572" class="LineNr">572 </span>  <span class="Delimiter">}</span>
<span id="L573" class="LineNr">573 </span><span class="Delimiter">}</span>
<span id="L574" class="LineNr">574 </span>
<span id="L575" class="LineNr">575 </span><span class="Delimiter">:(scenario return_overloaded_recipe_literal_to_caller)</span>
<span id="L576" class="LineNr">576 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L577" class="LineNr">577 </span>  local-scope
<span id="L578" class="LineNr">578 </span>  <span class="Delimiter">{</span>x: <span class="Delimiter">(</span>fn num<span class="muRecipe"> -&gt; </span>num<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>g
<span id="L579" class="LineNr">579 </span>  <span class="Constant">1</span>:num/<span class="Special">raw &lt;- </span>call x<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L580" class="LineNr">580 </span>]
<span id="L581" class="LineNr">581 </span><span class="muRecipe">def</span> g<span class="muRecipe"> -&gt; </span><span class="Delimiter">{</span>x: <span class="Delimiter">(</span>fn num<span class="muRecipe"> -&gt; </span>num<span class="Delimiter">)}</span> [
<span id="L582" class="LineNr">582 </span>  local-scope
<span id="L583" class="LineNr">583 </span>  <span class="Identifier">return</span> f
<span id="L584" class="LineNr">584 </span>]
<span id="L585" class="LineNr">585 </span><span class="Comment"># variant f</span>
<span id="L586" class="LineNr">586 </span><span class="muRecipe">def</span> f x:<span class="Normal">bool</span><span class="muRecipe"> -&gt; </span>y:<span class="Normal">bool</span> [
<span id="L587" class="LineNr">587 </span>  local-scope
<span id="L588" class="LineNr">588 </span>  load-ingredients
<span id="L589" class="LineNr">589 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L590" class="LineNr">590 </span>]
<span id="L591" class="LineNr">591 </span><span class="Comment"># variant f_2</span>
<span id="L592" class="LineNr">592 </span><span class="muRecipe">def</span> f x:num<span class="muRecipe"> -&gt; </span>y:num [
<span id="L593" class="LineNr">593 </span>  local-scope
<span id="L594" class="LineNr">594 </span>  load-ingredients
<span id="L595" class="LineNr">595 </span>  y<span class="Special"> &lt;- </span>copy x
<span id="L596" class="LineNr">596 </span>]
<span id="L597" class="LineNr">597 </span><span class="Comment"># x contains f_2</span>
<span id="L598" class="LineNr">598 </span><span class="traceContains">+mem: storing 34 in location 1</span>
<span id="L599" class="LineNr">599 </span>
<span id="L600" class="LineNr">600 </span><span class="Delimiter">:(before &quot;End resolve_ambiguous_call(r, index, inst, caller_recipe) Special-cases&quot;)</span>
<span id="L601" class="LineNr">601 </span><span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;return&quot;</span> || inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;reply&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L602" class="LineNr">602 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span>  i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L603" class="LineNr">603 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!is_recipe_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L604" class="LineNr">604 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='054static_dispatch.cc.html#L326'>non_ghost_size</a><span class="Delimiter">(</span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span><span class="Special">Recipe_variants</span><span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">))</span> &lt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L605" class="LineNr">605 </span>    <span class="Comment">// potentially overloaded recipe</span>
<span id="L606" class="LineNr">606 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!caller_recipe<span class="Delimiter">.</span>has_header<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L607" class="LineNr">607 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;sorry, we're not yet smart enough to guess which variant of '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name &lt;&lt; <span class="Constant">&quot;' you want, without a recipe header\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L608" class="LineNr">608 </span>      <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L609" class="LineNr">609 </span>    <span class="Delimiter">}</span>
<span id="L610" class="LineNr">610 </span>    string new_name = <a href='054static_dispatch.cc.html#L173'>resolve_ambiguous_call</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> r<span class="Delimiter">,</span> index<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span id="L611" class="LineNr">611 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>new_name == <span class="Constant">&quot;&quot;</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L612" class="LineNr">612 </span>    inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name = new_name<span class="Delimiter">;</span>
<span id="L613" class="LineNr">613 </span>    inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>value = get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> new_name<span class="Delimiter">);</span>
<span id="L614" class="LineNr">614 </span>  <span class="Delimiter">}</span>
<span id="L615" class="LineNr">615 </span>  <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L616" class="LineNr">616 </span><span class="Delimiter">}</span>
</pre>
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