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<a href='https://github.com/akkartik/mu/blob/master/055shape_shifting_container.cc'>https://github.com/akkartik/mu/blob/master/055shape_shifting_container.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr">  1 </span><span class="SalientComment">//:: Container definitions can contain 'type ingredients'</span>
<span id="L2" class="LineNr">  2 </span>
<span id="L3" class="LineNr">  3 </span><span class="Comment">//: pre-requisite: extend our notion of containers to not necessarily be</span>
<span id="L4" class="LineNr">  4 </span><span class="Comment">//: atomic types</span>
<span id="L5" class="LineNr">  5 </span><span class="Delimiter">:(after &quot;Update GET base_type in Check&quot;)</span>
<span id="L6" class="LineNr">  6 </span>base_type = get_base_type<span class="Delimiter">(</span>base_type<span class="Delimiter">);</span>
<span id="L7" class="LineNr">  7 </span><span class="Delimiter">:(after &quot;Update GET base_type in Run&quot;)</span>
<span id="L8" class="LineNr">  8 </span>base_type = get_base_type<span class="Delimiter">(</span>base_type<span class="Delimiter">);</span>
<span id="L9" class="LineNr">  9 </span><span class="Delimiter">:(after &quot;Update PUT base_type in Check&quot;)</span>
<span id="L10" class="LineNr"> 10 </span>base_type = get_base_type<span class="Delimiter">(</span>base_type<span class="Delimiter">);</span>
<span id="L11" class="LineNr"> 11 </span><span class="Delimiter">:(after &quot;Update PUT base_type in Run&quot;)</span>
<span id="L12" class="LineNr"> 12 </span>base_type = get_base_type<span class="Delimiter">(</span>base_type<span class="Delimiter">);</span>
<span id="L13" class="LineNr"> 13 </span><span class="Delimiter">:(after &quot;Update MAYBE_CONVERT base_type in Check&quot;)</span>
<span id="L14" class="LineNr"> 14 </span>base_type = get_base_type<span class="Delimiter">(</span>base_type<span class="Delimiter">);</span>
<span id="L15" class="LineNr"> 15 </span><span class="Delimiter">:(after &quot;Update base_type in element_type&quot;)</span>
<span id="L16" class="LineNr"> 16 </span>base_type = get_base_type<span class="Delimiter">(</span>base_type<span class="Delimiter">);</span>
<span id="L17" class="LineNr"> 17 </span><span class="Delimiter">:(after &quot;Update base_type in skip_addresses&quot;)</span>
<span id="L18" class="LineNr"> 18 </span>base_type = get_base_type<span class="Delimiter">(</span>base_type<span class="Delimiter">);</span>
<span id="L19" class="LineNr"> 19 </span><span class="Delimiter">:(replace{} &quot;const type_tree* get_base_type(const type_tree* t)&quot;)</span>
<span id="L20" class="LineNr"> 20 </span><span class="Normal">const</span> type_tree* get_base_type<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* t<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L21" class="LineNr"> 21 </span>  <span class="Normal">const</span> type_tree* result = t<span class="Delimiter">-&gt;</span>atom ? t : t<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L22" class="LineNr"> 22 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!result<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span>
<span id="L23" class="LineNr"> 23 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;invalid type &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>t<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L24" class="LineNr"> 24 </span>  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L25" class="LineNr"> 25 </span><span class="Delimiter">}</span>
<span id="L26" class="LineNr"> 26 </span>
<span id="L27" class="LineNr"> 27 </span><span class="Delimiter">:(scenario ill_formed_container)</span>
<span id="L28" class="LineNr"> 28 </span><span class="Special">% Hide_errors = true;</span>
<span id="L29" class="LineNr"> 29 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L30" class="LineNr"> 30 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">((</span>foo<span class="Delimiter">)</span> num<span class="Delimiter">)}</span><span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
<span id="L31" class="LineNr"> 31 </span>]
<span id="L32" class="LineNr"> 32 </span><span class="Comment"># no crash</span>
<span id="L33" class="LineNr"> 33 </span>
<span id="L34" class="LineNr"> 34 </span><span class="Comment">//: update size_of to handle non-atom container types</span>
<span id="L35" class="LineNr"> 35 </span>
<span id="L36" class="LineNr"> 36 </span><span class="Delimiter">:(scenario size_of_shape_shifting_container)</span>
<span id="L37" class="LineNr"> 37 </span><span class="muData">container</span> foo:_t [
<span id="L38" class="LineNr"> 38 </span>  <span class="Normal">x</span>:_t
<span id="L39" class="LineNr"> 39 </span>  <span class="Normal">y</span>:num
<span id="L40" class="LineNr"> 40 </span>]
<span id="L41" class="LineNr"> 41 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L42" class="LineNr"> 42 </span>  <span class="Constant">1</span>:foo:num<span class="Special"> &lt;- </span>merge <span class="Constant">12</span><span class="Delimiter">,</span> <span class="Constant">13</span>
<span id="L43" class="LineNr"> 43 </span>  <span class="Constant">3</span>:foo:point<span class="Special"> &lt;- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span id="L44" class="LineNr"> 44 </span>]
<span id="L45" class="LineNr"> 45 </span><span class="traceContains">+mem: storing 12 in location 1</span>
<span id="L46" class="LineNr"> 46 </span><span class="traceContains">+mem: storing 13 in location 2</span>
<span id="L47" class="LineNr"> 47 </span><span class="traceContains">+mem: storing 14 in location 3</span>
<span id="L48" class="LineNr"> 48 </span><span class="traceContains">+mem: storing 15 in location 4</span>
<span id="L49" class="LineNr"> 49 </span><span class="traceContains">+mem: storing 16 in location 5</span>
<span id="L50" class="LineNr"> 50 </span>
<span id="L51" class="LineNr"> 51 </span><span class="Delimiter">:(scenario size_of_shape_shifting_container_2)</span>
<span id="L52" class="LineNr"> 52 </span><span class="Comment"># multiple type ingredients</span>
<span id="L53" class="LineNr"> 53 </span><span class="muData">container</span> foo:_a:_b [
<span id="L54" class="LineNr"> 54 </span>  <span class="Normal">x</span>:_a
<span id="L55" class="LineNr"> 55 </span>  <span class="Normal">y</span>:_b
<span id="L56" class="LineNr"> 56 </span>]
<span id="L57" class="LineNr"> 57 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L58" class="LineNr"> 58 </span>  <span class="Constant">1</span>:foo:num:<span class="Normal">bool</span><span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span><span class="Constant"> true</span>
<span id="L59" class="LineNr"> 59 </span>]
<span id="L60" class="LineNr"> 60 </span>$error: <span class="Constant">0</span>
<span id="L61" class="LineNr"> 61 </span>
<span id="L62" class="LineNr"> 62 </span><span class="Delimiter">:(scenario size_of_shape_shifting_container_3)</span>
<span id="L63" class="LineNr"> 63 </span><span class="muData">container</span> foo:_a:_b [
<span id="L64" class="LineNr"> 64 </span>  <span class="Normal">x</span>:_a
<span id="L65" class="LineNr"> 65 </span>  <span class="Normal">y</span>:_b
<span id="L66" class="LineNr"> 66 </span>]
<span id="L67" class="LineNr"> 67 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L68" class="LineNr"> 68 </span>  <span class="Constant">1</span>:text<span class="Special"> &lt;- </span><span class="Normal">new</span> [abc]
<span id="L69" class="LineNr"> 69 </span>  <span class="Comment"># compound types for type ingredients</span>
<span id="L70" class="LineNr"> 70 </span>  <span class="Delimiter">{</span><span class="Constant">3</span>: <span class="Delimiter">(</span>foo number <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> array character<span class="Delimiter">))}</span><span class="Special"> &lt;- </span>merge <span class="Constant">34</span>/x<span class="Delimiter">,</span> <span class="Constant">1</span>:text/y
<span id="L71" class="LineNr"> 71 </span>]
<span id="L72" class="LineNr"> 72 </span>$error: <span class="Constant">0</span>
<span id="L73" class="LineNr"> 73 </span>
<span id="L74" class="LineNr"> 74 </span><span class="Delimiter">:(scenario size_of_shape_shifting_container_4)</span>
<span id="L75" class="LineNr"> 75 </span><span class="muData">container</span> foo:_a:_b [
<span id="L76" class="LineNr"> 76 </span>  <span class="Normal">x</span>:_a
<span id="L77" class="LineNr"> 77 </span>  <span class="Normal">y</span>:_b
<span id="L78" class="LineNr"> 78 </span>]
<span id="L79" class="LineNr"> 79 </span><span class="muData">container</span> bar:_a:_b [
<span id="L80" class="LineNr"> 80 </span>  <span class="Comment"># dilated element</span>
<span id="L81" class="LineNr"> 81 </span>  <span class="Delimiter">{</span>data: <span class="Delimiter">(</span>foo _a <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> _b<span class="Delimiter">))}</span>
<span id="L82" class="LineNr"> 82 </span>]
<span id="L83" class="LineNr"> 83 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L84" class="LineNr"> 84 </span>  <span class="Constant">1</span>:text<span class="Special"> &lt;- </span><span class="Normal">new</span> [abc]
<span id="L85" class="LineNr"> 85 </span>  <span class="Constant">3</span>:bar:num:@:<span class="Normal">char</span><span class="Special"> &lt;- </span>merge <span class="Constant">34</span>/x<span class="Delimiter">,</span> <span class="Constant">1</span>:text/y
<span id="L86" class="LineNr"> 86 </span>]
<span id="L87" class="LineNr"> 87 </span>$error: <span class="Constant">0</span>
<span id="L88" class="LineNr"> 88 </span>
<span id="L89" class="LineNr"> 89 </span><span class="Delimiter">:(scenario shape_shifting_container_extend)</span>
<span id="L90" class="LineNr"> 90 </span><span class="muData">container</span> foo:_a [
<span id="L91" class="LineNr"> 91 </span>  <span class="Normal">x</span>:_a
<span id="L92" class="LineNr"> 92 </span>]
<span id="L93" class="LineNr"> 93 </span><span class="muData">container</span> foo:_a [
<span id="L94" class="LineNr"> 94 </span>  <span class="Normal">y</span>:_a
<span id="L95" class="LineNr"> 95 </span>]
<span id="L96" class="LineNr"> 96 </span>$error: <span class="Constant">0</span>
<span id="L97" class="LineNr"> 97 </span>
<span id="L98" class="LineNr"> 98 </span><span class="Delimiter">:(scenario shape_shifting_container_extend_error)</span>
<span id="L99" class="LineNr"> 99 </span><span class="Special">% Hide_errors = true;</span>
<span id="L100" class="LineNr">100 </span><span class="muData">container</span> foo:_a [
<span id="L101" class="LineNr">101 </span>  <span class="Normal">x</span>:_a
<span id="L102" class="LineNr">102 </span>]
<span id="L103" class="LineNr">103 </span><span class="muData">container</span> foo:_b [
<span id="L104" class="LineNr">104 </span>  <span class="Normal">y</span>:_b
<span id="L105" class="LineNr">105 </span>]
<span id="L106" class="LineNr">106 </span><span class="traceContains">+error: headers of container 'foo' must use identical type ingredients</span>
<span id="L107" class="LineNr">107 </span>
<span id="L108" class="LineNr">108 </span><span class="Delimiter">:(scenario type_ingredient_must_start_with_underscore)</span>
<span id="L109" class="LineNr">109 </span><span class="Special">% Hide_errors = true;</span>
<span id="L110" class="LineNr">110 </span><span class="muData">container</span> foo:t [
<span id="L111" class="LineNr">111 </span>  <span class="Normal">x</span>:num
<span id="L112" class="LineNr">112 </span>]
<span id="L113" class="LineNr">113 </span><span class="traceContains">+error: foo: type ingredient 't' must begin with an underscore</span>
<span id="L114" class="LineNr">114 </span>
<span id="L115" class="LineNr">115 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
<span id="L116" class="LineNr">116 </span><span class="Comment">// We'll use large type ordinals to mean &quot;the following type of the variable&quot;.</span>
<span id="L117" class="LineNr">117 </span><span class="Comment">// For example, if we have a generic type called foo:_elem, the type</span>
<span id="L118" class="LineNr">118 </span><span class="Comment">// ingredient _elem in foo's type_info will have value START_TYPE_INGREDIENTS,</span>
<span id="L119" class="LineNr">119 </span><span class="Comment">// and we'll handle it by looking in the current reagent for the next type</span>
<span id="L120" class="LineNr">120 </span><span class="Comment">// that appears after foo.</span>
<span id="L121" class="LineNr">121 </span><span class="Normal">extern</span> <span class="Normal">const</span> <span class="Normal">int</span> START_TYPE_INGREDIENTS = <span class="Constant">2000</span><span class="Delimiter">;</span>
<span id="L122" class="LineNr">122 </span><span class="Delimiter">:(before &quot;End Commandline Parsing&quot;)</span>  <span class="Comment">// after loading .mu files</span>
<span id="L123" class="LineNr">123 </span>assert<span class="Delimiter">(</span><span class="Special">Next_type_ordinal</span> &lt; START_TYPE_INGREDIENTS<span class="Delimiter">);</span>
<span id="L124" class="LineNr">124 </span>
<span id="L125" class="LineNr">125 </span><span class="Delimiter">:(before &quot;End type_info Fields&quot;)</span>
<span id="L126" class="LineNr">126 </span>map&lt;string<span class="Delimiter">,</span> type_ordinal&gt; type_ingredient_names<span class="Delimiter">;</span>
<span id="L127" class="LineNr">127 </span>
<span id="L128" class="LineNr">128 </span><span class="Comment">//: Suppress unknown type checks in shape-shifting containers.</span>
<span id="L129" class="LineNr">129 </span>
<span id="L130" class="LineNr">130 </span><span class="Delimiter">:(before &quot;Check Container Field Types(info)&quot;)</span>
<span id="L131" class="LineNr">131 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!info<span class="Delimiter">.</span>type_ingredient_names<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L132" class="LineNr">132 </span>
<span id="L133" class="LineNr">133 </span><span class="Delimiter">:(before &quot;End container Name Refinements&quot;)</span>
<span id="L134" class="LineNr">134 </span><span class="Normal">if</span> <span class="Delimiter">(</span>name<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">':'</span><span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L135" class="LineNr">135 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;container has type ingredients; parsing&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L136" class="LineNr">136 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!read_type_ingredients<span class="Delimiter">(</span>name<span class="Delimiter">,</span> command<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L137" class="LineNr">137 </span>    <span class="Comment">// error; skip rest of the container definition and continue</span>
<span id="L138" class="LineNr">138 </span>    <a href='016dilated_reagent.cc.html#L57'>slurp_balanced_bracket</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L139" class="LineNr">139 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L140" class="LineNr">140 </span>  <span class="Delimiter">}</span>
<span id="L141" class="LineNr">141 </span><span class="Delimiter">}</span>
<span id="L142" class="LineNr">142 </span>
<span id="L143" class="LineNr">143 </span><span class="Delimiter">:(code)</span>
<span id="L144" class="LineNr">144 </span><span class="Normal">bool</span> read_type_ingredients<span class="Delimiter">(</span>string&amp; name<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; command<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L145" class="LineNr">145 </span>  string save_name = name<span class="Delimiter">;</span>
<span id="L146" class="LineNr">146 </span>  istringstream in<span class="Delimiter">(</span>save_name<span class="Delimiter">);</span>
<span id="L147" class="LineNr">147 </span>  name = slurp_until<span class="Delimiter">(</span>in<span class="Delimiter">,</span> <span class="Constant">':'</span><span class="Delimiter">);</span>
<span id="L148" class="LineNr">148 </span>  map&lt;string<span class="Delimiter">,</span> type_ordinal&gt; type_ingredient_names<span class="Delimiter">;</span>
<span id="L149" class="LineNr">149 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!slurp_type_ingredients<span class="Delimiter">(</span>in<span class="Delimiter">,</span> type_ingredient_names<span class="Delimiter">,</span> name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L150" class="LineNr">150 </span>    <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L151" class="LineNr">151 </span>  <span class="Delimiter">}</span>
<span id="L152" class="LineNr">152 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L226'>contains_key</a><span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> name<span class="Delimiter">)</span>
<span id="L153" class="LineNr">153 </span>      &amp;&amp; <a href='001help.cc.html#L226'>contains_key</a><span class="Delimiter">(</span><span class="Special">Type</span><span class="Delimiter">,</span> get<span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> name<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L154" class="LineNr">154 </span>    <span class="Normal">const</span> type_info&amp; previous_info = get<span class="Delimiter">(</span><span class="Special">Type</span><span class="Delimiter">,</span> get<span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> name<span class="Delimiter">));</span>
<span id="L155" class="LineNr">155 </span>    <span class="Comment">// we've already seen this container; make sure type ingredients match</span>
<span id="L156" class="LineNr">156 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!type_ingredients_match<span class="Delimiter">(</span>type_ingredient_names<span class="Delimiter">,</span> previous_info<span class="Delimiter">.</span>type_ingredient_names<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L157" class="LineNr">157 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;headers of &quot;</span> &lt;&lt; command &lt;&lt; <span class="Constant">&quot; '&quot;</span> &lt;&lt; name &lt;&lt; <span class="Constant">&quot;' must use identical type ingredients\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L158" class="LineNr">158 </span>      <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L159" class="LineNr">159 </span>    <span class="Delimiter">}</span>
<span id="L160" class="LineNr">160 </span>    <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L161" class="LineNr">161 </span>  <span class="Delimiter">}</span>
<span id="L162" class="LineNr">162 </span>  <span class="Comment">// we haven't seen this container before</span>
<span id="L163" class="LineNr">163 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> name<span class="Delimiter">)</span> || get<span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> name<span class="Delimiter">)</span> == <span class="Constant">0</span><span class="Delimiter">)</span>
<span id="L164" class="LineNr">164 </span>    <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> name<span class="Delimiter">,</span> <span class="Special">Next_type_ordinal</span>++<span class="Delimiter">);</span>
<span id="L165" class="LineNr">165 </span>  type_info&amp; info = <a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span><span class="Special">Type</span><span class="Delimiter">,</span> get<span class="Delimiter">(</span><span class="Special">Type_ordinal</span><span class="Delimiter">,</span> name<span class="Delimiter">));</span>
<span id="L166" class="LineNr">166 </span>  info<span class="Delimiter">.</span>type_ingredient_names<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>type_ingredient_names<span class="Delimiter">);</span>
<span id="L167" class="LineNr">167 </span>  <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L168" class="LineNr">168 </span><span class="Delimiter">}</span>
<span id="L169" class="LineNr">169 </span>
<span id="L170" class="LineNr">170 </span><span class="Normal">bool</span> slurp_type_ingredients<span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">,</span> map&lt;string<span class="Delimiter">,</span> type_ordinal&gt;&amp; out<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; container_name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L171" class="LineNr">171 </span>  <span class="Normal">int</span> next_type_ordinal = START_TYPE_INGREDIENTS<span class="Delimiter">;</span>
<span id="L172" class="LineNr">172 </span>  <span class="Normal">while</span> <span class="Delimiter">(</span><a href='001help.cc.html#L239'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L173" class="LineNr">173 </span>    string curr = slurp_until<span class="Delimiter">(</span>in<span class="Delimiter">,</span> <span class="Constant">':'</span><span class="Delimiter">);</span>
<span id="L174" class="LineNr">174 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L175" class="LineNr">175 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; container_name &lt;&lt; <span class="Constant">&quot;: empty type ingredients not permitted\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L176" class="LineNr">176 </span>      <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L177" class="LineNr">177 </span>    <span class="Delimiter">}</span>
<span id="L178" class="LineNr">178 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!starts_with<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">&quot;_&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L179" class="LineNr">179 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; container_name &lt;&lt; <span class="Constant">&quot;: type ingredient '&quot;</span> &lt;&lt; curr &lt;&lt; <span class="Constant">&quot;' must begin with an underscore\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L180" class="LineNr">180 </span>      <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L181" class="LineNr">181 </span>    <span class="Delimiter">}</span>
<span id="L182" class="LineNr">182 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>out<span class="Delimiter">.</span>find<span class="Delimiter">(</span>curr<span class="Delimiter">)</span> != out<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L183" class="LineNr">183 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; container_name &lt;&lt; <span class="Constant">&quot;: can't repeat type ingredient name'&quot;</span> &lt;&lt; curr &lt;&lt; <span class="Constant">&quot;' in a single container definition\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L184" class="LineNr">184 </span>      <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L185" class="LineNr">185 </span>    <span class="Delimiter">}</span>
<span id="L186" class="LineNr">186 </span>    <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>out<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> next_type_ordinal++<span class="Delimiter">);</span>
<span id="L187" class="LineNr">187 </span>  <span class="Delimiter">}</span>
<span id="L188" class="LineNr">188 </span>  <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L189" class="LineNr">189 </span><span class="Delimiter">}</span>
<span id="L190" class="LineNr">190 </span>
<span id="L191" class="LineNr">191 </span><span class="Normal">bool</span> type_ingredients_match<span class="Delimiter">(</span><span class="Normal">const</span> map&lt;string<span class="Delimiter">,</span> type_ordinal&gt;&amp; a<span class="Delimiter">,</span> <span class="Normal">const</span> map&lt;string<span class="Delimiter">,</span> type_ordinal&gt;&amp; b<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L192" class="LineNr">192 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>a<span class="Delimiter">)</span> != <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>b<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L193" class="LineNr">193 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;string<span class="Delimiter">,</span> type_ordinal&gt;::const_iterator p = a<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>  p != a<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>  ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L194" class="LineNr">194 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>b<span class="Delimiter">,</span> p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L195" class="LineNr">195 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>second != get<span class="Delimiter">(</span>b<span class="Delimiter">,</span> p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L196" class="LineNr">196 </span>  <span class="Delimiter">}</span>
<span id="L197" class="LineNr">197 </span>  <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L198" class="LineNr">198 </span><span class="Delimiter">}</span>
<span id="L199" class="LineNr">199 </span>
<span id="L200" class="LineNr">200 </span><span class="Delimiter">:(before &quot;End <a href='030container.cc.html#L446'>insert_container</a> Special-cases&quot;)</span>
<span id="L201" class="LineNr">201 </span><span class="Comment">// check for use of type ingredients</span>
<span id="L202" class="LineNr">202 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L203" class="LineNr">203 </span>  type<span class="Delimiter">-&gt;</span>value = get<span class="Delimiter">(</span>info<span class="Delimiter">.</span>type_ingredient_names<span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
<span id="L204" class="LineNr">204 </span><span class="Delimiter">}</span>
<span id="L205" class="LineNr">205 </span><span class="Delimiter">:(code)</span>
<span id="L206" class="LineNr">206 </span><span class="Normal">bool</span> is_type_ingredient_name<span class="Delimiter">(</span><span class="Normal">const</span> string&amp; type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L207" class="LineNr">207 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L77'>starts_with</a><span class="Delimiter">(</span>type<span class="Delimiter">,</span> <span class="Constant">&quot;_&quot;</span><span class="Delimiter">);</span>
<span id="L208" class="LineNr">208 </span><span class="Delimiter">}</span>
<span id="L209" class="LineNr">209 </span>
<span id="L210" class="LineNr">210 </span><span class="Delimiter">:(before &quot;End Container Type Checks&quot;)</span>
<span id="L211" class="LineNr">211 </span><span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value &gt;= START_TYPE_INGREDIENTS
<span id="L212" class="LineNr">212 </span>    &amp;&amp; <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value - START_TYPE_INGREDIENTS<span class="Delimiter">)</span> &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Type</span><span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>value<span class="Delimiter">).</span>type_ingredient_names<span class="Delimiter">))</span>
<span id="L213" class="LineNr">213 </span>  <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L214" class="LineNr">214 </span>
<span id="L215" class="LineNr">215 </span><span class="Delimiter">:(scenario size_of_shape_shifting_exclusive_container)</span>
<span id="L216" class="LineNr">216 </span><span class="muData">exclusive-container</span> foo:_t [
<span id="L217" class="LineNr">217 </span>  <span class="Normal">x</span>:_t
<span id="L218" class="LineNr">218 </span>  <span class="Normal">y</span>:num
<span id="L219" class="LineNr">219 </span>]
<span id="L220" class="LineNr">220 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L221" class="LineNr">221 </span>  <span class="Constant">1</span>:foo:num<span class="Special"> &lt;- </span>merge <span class="Constant">0</span>/x<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L222" class="LineNr">222 </span>  <span class="Constant">3</span>:foo:point<span class="Special"> &lt;- </span>merge <span class="Constant">0</span>/x<span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span id="L223" class="LineNr">223 </span>  <span class="Constant">6</span>:foo:point<span class="Special"> &lt;- </span>merge <span class="Constant">1</span>/y<span class="Delimiter">,</span> <span class="Constant">23</span>
<span id="L224" class="LineNr">224 </span>]
<span id="L225" class="LineNr">225 </span><span class="traceContains">+run: {1: (&quot;foo&quot; &quot;number&quot;)} &lt;- merge {0: &quot;literal&quot;, &quot;x&quot;: ()}, {34: &quot;literal&quot;}</span>
<span id="L226" class="LineNr">226 </span><span class="traceContains">+mem: storing 0 in location 1</span>
<span id="L227" class="LineNr">227 </span><span class="traceContains">+mem: storing 34 in location 2</span>
<span id="L228" class="LineNr">228 </span><span class="traceContains">+run: {3: (&quot;foo&quot; &quot;point&quot;)} &lt;- merge {0: &quot;literal&quot;, &quot;x&quot;: ()}, {15: &quot;literal&quot;}, {16: &quot;literal&quot;}</span>
<span id="L229" class="LineNr">229 </span><span class="traceContains">+mem: storing 0 in location 3</span>
<span id="L230" class="LineNr">230 </span><span class="traceContains">+mem: storing 15 in location 4</span>
<span id="L231" class="LineNr">231 </span><span class="traceContains">+mem: storing 16 in location 5</span>
<span id="L232" class="LineNr">232 </span><span class="traceContains">+run: {6: (&quot;foo&quot; &quot;point&quot;)} &lt;- merge {1: &quot;literal&quot;, &quot;y&quot;: ()}, {23: &quot;literal&quot;}</span>
<span id="L233" class="LineNr">233 </span><span class="traceContains">+mem: storing 1 in location 6</span>
<span id="L234" class="LineNr">234 </span><span class="traceContains">+mem: storing 23 in location 7</span>
<span id="L235" class="LineNr">235 </span><span class="traceContains">+run: return</span>
<span id="L236" class="LineNr">236 </span><span class="Comment"># no other stores</span>
<span id="L237" class="LineNr">237 </span><span class="Special">% CHECK_EQ(trace_count_prefix(&quot;mem&quot;, &quot;storing&quot;), 7);</span>
<span id="L238" class="LineNr">238 </span>
<span id="L239" class="LineNr">239 </span><span class="Delimiter">:(before &quot;End variant_type Special-cases&quot;)</span>
<span id="L240" class="LineNr">240 </span><span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient<span class="Delimiter">(</span>element<span class="Delimiter">))</span>
<span id="L241" class="LineNr">241 </span>  replace_type_ingredients<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">,</span> info<span class="Delimiter">,</span> <span class="Constant">&quot; while computing variant type of exclusive-container&quot;</span><span class="Delimiter">);</span>
<span id="L242" class="LineNr">242 </span>
<span id="L243" class="LineNr">243 </span><span class="Delimiter">:(scenario get_on_shape_shifting_container)</span>
<span id="L244" class="LineNr">244 </span><span class="muData">container</span> foo:_t [
<span id="L245" class="LineNr">245 </span>  <span class="Normal">x</span>:_t
<span id="L246" class="LineNr">246 </span>  <span class="Normal">y</span>:num
<span id="L247" class="LineNr">247 </span>]
<span id="L248" class="LineNr">248 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L249" class="LineNr">249 </span>  <span class="Constant">1</span>:foo:point<span class="Special"> &lt;- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span id="L250" class="LineNr">250 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo:point<span class="Delimiter">,</span> <span class="Constant">y:offset</span>
<span id="L251" class="LineNr">251 </span>]
<span id="L252" class="LineNr">252 </span><span class="traceContains">+mem: storing 16 in location 4</span>
<span id="L253" class="LineNr">253 </span>
<span id="L254" class="LineNr">254 </span><span class="Delimiter">:(scenario get_on_shape_shifting_container_2)</span>
<span id="L255" class="LineNr">255 </span><span class="muData">container</span> foo:_t [
<span id="L256" class="LineNr">256 </span>  <span class="Normal">x</span>:_t
<span id="L257" class="LineNr">257 </span>  <span class="Normal">y</span>:num
<span id="L258" class="LineNr">258 </span>]
<span id="L259" class="LineNr">259 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L260" class="LineNr">260 </span>  <span class="Constant">1</span>:foo:point<span class="Special"> &lt;- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span id="L261" class="LineNr">261 </span>  <span class="Constant">4</span>:point<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo:point<span class="Delimiter">,</span> <span class="Constant">x:offset</span>
<span id="L262" class="LineNr">262 </span>]
<span id="L263" class="LineNr">263 </span><span class="traceContains">+mem: storing 14 in location 4</span>
<span id="L264" class="LineNr">264 </span><span class="traceContains">+mem: storing 15 in location 5</span>
<span id="L265" class="LineNr">265 </span>
<span id="L266" class="LineNr">266 </span><span class="Delimiter">:(scenario get_on_shape_shifting_container_3)</span>
<span id="L267" class="LineNr">267 </span><span class="muData">container</span> foo:_t [
<span id="L268" class="LineNr">268 </span>  <span class="Normal">x</span>:_t
<span id="L269" class="LineNr">269 </span>  <span class="Normal">y</span>:num
<span id="L270" class="LineNr">270 </span>]
<span id="L271" class="LineNr">271 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L272" class="LineNr">272 </span>  <span class="Constant">1</span>:num/alloc-id<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L273" class="LineNr">273 </span>  <span class="Constant">3</span>:foo:&amp;:point<span class="Special"> &lt;- </span>merge <span class="Constant">1</span>:&amp;:point<span class="Delimiter">,</span> <span class="Constant">48</span>
<span id="L274" class="LineNr">274 </span>  <span class="Constant">6</span>:&amp;:point<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo:&amp;:point<span class="Delimiter">,</span> <span class="Constant">x:offset</span>
<span id="L275" class="LineNr">275 </span>]
<span id="L276" class="LineNr">276 </span><span class="traceContains">+mem: storing 0 in location 6</span>
<span id="L277" class="LineNr">277 </span><span class="traceContains">+mem: storing 34 in location 7</span>
<span id="L278" class="LineNr">278 </span>
<span id="L279" class="LineNr">279 </span><span class="Delimiter">:(scenario get_on_shape_shifting_container_inside_container)</span>
<span id="L280" class="LineNr">280 </span><span class="muData">container</span> foo:_t [
<span id="L281" class="LineNr">281 </span>  <span class="Normal">x</span>:_t
<span id="L282" class="LineNr">282 </span>  <span class="Normal">y</span>:num
<span id="L283" class="LineNr">283 </span>]
<span id="L284" class="LineNr">284 </span><span class="muData">container</span> bar [
<span id="L285" class="LineNr">285 </span>  <span class="Normal">x</span>:foo:point
<span id="L286" class="LineNr">286 </span>  <span class="Normal">y</span>:num
<span id="L287" class="LineNr">287 </span>]
<span id="L288" class="LineNr">288 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L289" class="LineNr">289 </span>  <span class="Constant">1</span>:bar<span class="Special"> &lt;- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span><span class="Delimiter">,</span> <span class="Constant">17</span>
<span id="L290" class="LineNr">290 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:bar<span class="Delimiter">,</span> <span class="Constant">1:offset</span>
<span id="L291" class="LineNr">291 </span>]
<span id="L292" class="LineNr">292 </span><span class="traceContains">+mem: storing 17 in location 5</span>
<span id="L293" class="LineNr">293 </span>
<span id="L294" class="LineNr">294 </span><span class="Delimiter">:(scenario get_on_complex_shape_shifting_container)</span>
<span id="L295" class="LineNr">295 </span><span class="muData">container</span> foo:_a:_b [
<span id="L296" class="LineNr">296 </span>  <span class="Normal">x</span>:_a
<span id="L297" class="LineNr">297 </span>  <span class="Normal">y</span>:_b
<span id="L298" class="LineNr">298 </span>]
<span id="L299" class="LineNr">299 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L300" class="LineNr">300 </span>  <span class="Constant">1</span>:text<span class="Special"> &lt;- </span><span class="Normal">new</span> [abc]
<span id="L301" class="LineNr">301 </span>  <span class="Delimiter">{</span><span class="Constant">3</span>: <span class="Delimiter">(</span>foo number <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> array character<span class="Delimiter">))}</span><span class="Special"> &lt;- </span>merge <span class="Constant">34</span>/x<span class="Delimiter">,</span> <span class="Constant">1</span>:text/y
<span id="L302" class="LineNr">302 </span>  <span class="Constant">6</span>:text<span class="Special"> &lt;- </span>get <span class="Delimiter">{</span><span class="Constant">3</span>: <span class="Delimiter">(</span>foo number <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> array character<span class="Delimiter">))},</span> <span class="Constant">y:offset</span>
<span id="L303" class="LineNr">303 </span>  <span class="Constant">8</span>:<span class="Normal">bool</span><span class="Special"> &lt;- </span>equal <span class="Constant">1</span>:text<span class="Delimiter">,</span> <span class="Constant">6</span>:text
<span id="L304" class="LineNr">304 </span>]
<span id="L305" class="LineNr">305 </span><span class="traceContains">+mem: storing 1 in location 8</span>
<span id="L306" class="LineNr">306 </span>
<span id="L307" class="LineNr">307 </span><span class="Delimiter">:(before &quot;End <a href='030container.cc.html#L212'>element_type</a> Special-cases&quot;)</span>
<span id="L308" class="LineNr">308 </span>replace_type_ingredients<span class="Delimiter">(</span>element<span class="Delimiter">,</span> type<span class="Delimiter">,</span> info<span class="Delimiter">,</span> <span class="Constant">&quot; while computing element type of container&quot;</span><span class="Delimiter">);</span>
<span id="L309" class="LineNr">309 </span>
<span id="L310" class="LineNr">310 </span><span class="Delimiter">:(before &quot;End size_of(type) Non-atom Special-cases&quot;)</span>
<span id="L311" class="LineNr">311 </span>assert<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">);</span>
<span id="L312" class="LineNr">312 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special">Type</span><span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L313" class="LineNr">313 </span>  <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;no such type &quot;</span> &lt;&lt; type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L314" class="LineNr">314 </span>  <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L315" class="LineNr">315 </span><span class="Delimiter">}</span>
<span id="L316" class="LineNr">316 </span>type_info t = get<span class="Delimiter">(</span><span class="Special">Type</span><span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value<span class="Delimiter">);</span>
<span id="L317" class="LineNr">317 </span><span class="Normal">if</span> <span class="Delimiter">(</span>t<span class="Delimiter">.</span>kind == <a href='010vm.cc.html#L180'>CONTAINER</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L318" class="LineNr">318 </span>  <span class="Comment">// size of a container is the sum of the sizes of its elements</span>
<span id="L319" class="LineNr">319 </span>  <span class="Normal">int</span> result = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L320" class="LineNr">320 </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>t<span class="Delimiter">.</span>elements<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L321" class="LineNr">321 </span>    <span class="Comment">// todo: strengthen assertion to disallow mutual type recursion</span>
<span id="L322" class="LineNr">322 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>get_base_type<span class="Delimiter">(</span>t<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">)-&gt;</span>value == get_base_type<span class="Delimiter">(</span>type<span class="Delimiter">)-&gt;</span>value<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L323" class="LineNr">323 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;container &quot;</span> &lt;&lt; t<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; can't include itself as a member\n&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L324" class="LineNr">324 </span>      <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L325" class="LineNr">325 </span>    <span class="Delimiter">}</span>
<span id="L326" class="LineNr">326 </span>    result += size_of<span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>type<span class="Delimiter">,</span> i<span class="Delimiter">));</span>
<span id="L327" class="LineNr">327 </span>  <span class="Delimiter">}</span>
<span id="L328" class="LineNr">328 </span>  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L329" class="LineNr">329 </span><span class="Delimiter">}</span>
<span id="L330" class="LineNr">330 </span><span class="Normal">if</span> <span class="Delimiter">(</span>t<span class="Delimiter">.</span>kind == <a href='010vm.cc.html#L181'>EXCLUSIVE_CONTAINER</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L331" class="LineNr">331 </span>  <span class="Comment">// size of an exclusive container is the size of its largest variant</span>
<span id="L332" class="LineNr">332 </span>  <span class="Comment">// (So like containers, it can't contain arrays.)</span>
<span id="L333" class="LineNr">333 </span>  <span class="Normal">int</span> result = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L334" class="LineNr">334 </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>t<span class="Delimiter">.</span>elements<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L335" class="LineNr">335 </span>    reagent tmp<span class="Delimiter">;</span>
<span id="L336" class="LineNr">336 </span>    tmp<span class="Delimiter">.</span>type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*type<span class="Delimiter">);</span>
<span id="L337" class="LineNr">337 </span>    <span class="Normal">int</span> size = size_of<span class="Delimiter">(</span>variant_type<span class="Delimiter">(</span>tmp<span class="Delimiter">,</span> i<span class="Delimiter">));</span>
<span id="L338" class="LineNr">338 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>size &gt; result<span class="Delimiter">)</span> result = size<span class="Delimiter">;</span>
<span id="L339" class="LineNr">339 </span>  <span class="Delimiter">}</span>
<span id="L340" class="LineNr">340 </span>  <span class="Comment">// ...+1 for its tag.</span>
<span id="L341" class="LineNr">341 </span>  <span class="Identifier">return</span> result+<span class="Constant">1</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 complex_shape_shifting_exclusive_container)</span>
<span id="L345" class="LineNr">345 </span><span class="muData">exclusive-container</span> foo:_a [
<span id="L346" class="LineNr">346 </span>  <span class="Normal">x</span>:_a
<span id="L347" class="LineNr">347 </span>  <span class="Normal">y</span>:num
<span id="L348" class="LineNr">348 </span>]
<span id="L349" class="LineNr">349 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L350" class="LineNr">350 </span>  <span class="Constant">1</span>:text<span class="Special"> &lt;- </span><span class="Normal">new</span> [abc]
<span id="L351" class="LineNr">351 </span>  <span class="Constant">3</span>:foo:point<span class="Special"> &lt;- </span>merge <span class="Constant">0</span>/variant<span class="Delimiter">,</span> <span class="Constant">34</span>/xx<span class="Delimiter">,</span> <span class="Constant">35</span>/xy
<span id="L352" class="LineNr">352 </span>  <span class="Constant">10</span>:point<span class="Delimiter">,</span> <span class="Constant">20</span>:<span class="Normal">bool</span><span class="Special"> &lt;- </span>maybe-convert <span class="Constant">3</span>:foo:point<span class="Delimiter">,</span> <span class="Constant">0</span>/variant
<span id="L353" class="LineNr">353 </span>]
<span id="L354" class="LineNr">354 </span><span class="traceContains">+mem: storing 1 in location 20</span>
<span id="L355" class="LineNr">355 </span><span class="traceContains">+mem: storing 35 in location 11</span>
<span id="L356" class="LineNr">356 </span>
<span id="L357" class="LineNr">357 </span><span class="Delimiter">:(code)</span>
<span id="L358" class="LineNr">358 </span><span class="Normal">bool</span> contains_type_ingredient<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L359" class="LineNr">359 </span>  <span class="Identifier">return</span> contains_type_ingredient<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span id="L360" class="LineNr">360 </span><span class="Delimiter">}</span>
<span id="L361" class="LineNr">361 </span>
<span id="L362" class="LineNr">362 </span><span class="Normal">bool</span> contains_type_ingredient<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L363" class="LineNr">363 </span>  <span class="Normal">if</span> <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="L364" class="LineNr">364 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>value &gt;= START_TYPE_INGREDIENTS<span class="Delimiter">;</span>
<span id="L365" class="LineNr">365 </span>  <span class="Identifier">return</span> contains_type_ingredient<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">)</span> || contains_type_ingredient<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">);</span>
<span id="L366" class="LineNr">366 </span><span class="Delimiter">}</span>
<span id="L367" class="LineNr">367 </span>
<span id="L368" class="LineNr">368 </span><span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>reagent&amp; element<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* caller_type<span class="Delimiter">,</span> <span class="Normal">const</span> type_info&amp; info<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; location_for_error_messages<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L369" class="LineNr">369 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient<span class="Delimiter">(</span>element<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L370" class="LineNr">370 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!caller_type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span>
<span id="L371" class="LineNr">371 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;illegal type &quot;</span> &lt;&lt; names_to_string<span class="Delimiter">(</span>caller_type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; seems to be missing a type ingredient or three&quot;</span> &lt;&lt; location_for_error_messages &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L372" class="LineNr">372 </span>    replace_type_ingredients<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">,</span> caller_type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">,</span> info<span class="Delimiter">,</span> location_for_error_messages<span class="Delimiter">);</span>
<span id="L373" class="LineNr">373 </span>  <span class="Delimiter">}</span>
<span id="L374" class="LineNr">374 </span><span class="Delimiter">}</span>
<span id="L375" class="LineNr">375 </span>
<span id="L376" class="LineNr">376 </span><span class="Comment">// replace all type_ingredients in element_type with corresponding elements of callsite_type</span>
<span id="L377" class="LineNr">377 </span><span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>type_tree* <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* callsite_type<span class="Delimiter">,</span> <span class="Normal">const</span> type_info&amp; container_info<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; location_for_error_messages<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L378" class="LineNr">378 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!callsite_type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// error but it's already been raised above</span>
<span id="L379" class="LineNr">379 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!element_type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L380" class="LineNr">380 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!element_type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L381" class="LineNr">381 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">-&gt;</span>right == <span class="Constant">NULL</span> &amp;&amp; is_type_ingredient<span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">-&gt;</span>left<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L382" class="LineNr">382 </span>      <span class="Normal">int</span> type_ingredient_index = to_type_ingredient_index<span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">-&gt;</span>left<span class="Delimiter">);</span>
<span id="L383" class="LineNr">383 </span>      <span class="Normal">if</span> <span class="Delimiter">(</span>corresponding<span class="Delimiter">(</span>callsite_type<span class="Delimiter">,</span> type_ingredient_index<span class="Delimiter">,</span> is_final_type_ingredient<span class="Delimiter">(</span>type_ingredient_index<span class="Delimiter">,</span> container_info<span class="Delimiter">))-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L384" class="LineNr">384 </span>        <span class="Comment">// replacing type ingredient at end of list, and replacement is a non-degenerate compound type -- (a b) but not (a)</span>
<span id="L385" class="LineNr">385 </span>        replace_type_ingredient_at<span class="Delimiter">(</span>type_ingredient_index<span class="Delimiter">,</span> <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">,</span> callsite_type<span class="Delimiter">,</span> container_info<span class="Delimiter">,</span> location_for_error_messages<span class="Delimiter">);</span>
<span id="L386" class="LineNr">386 </span>        <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L387" class="LineNr">387 </span>      <span class="Delimiter">}</span>
<span id="L388" class="LineNr">388 </span>    <span class="Delimiter">}</span>
<span id="L389" class="LineNr">389 </span>    replace_type_ingredients<span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">-&gt;</span>left<span class="Delimiter">,</span> callsite_type<span class="Delimiter">,</span> container_info<span class="Delimiter">,</span> location_for_error_messages<span class="Delimiter">);</span>
<span id="L390" class="LineNr">390 </span>    replace_type_ingredients<span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">-&gt;</span>right<span class="Delimiter">,</span> callsite_type<span class="Delimiter">,</span> container_info<span class="Delimiter">,</span> location_for_error_messages<span class="Delimiter">);</span>
<span id="L391" class="LineNr">391 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L392" class="LineNr">392 </span>  <span class="Delimiter">}</span>
<span id="L393" class="LineNr">393 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>is_type_ingredient<span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">))</span>
<span id="L394" class="LineNr">394 </span>    replace_type_ingredient_at<span class="Delimiter">(</span>to_type_ingredient_index<span class="Delimiter">(</span><a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">),</span> <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">,</span> callsite_type<span class="Delimiter">,</span> container_info<span class="Delimiter">,</span> location_for_error_messages<span class="Delimiter">);</span>
<span id="L395" class="LineNr">395 </span><span class="Delimiter">}</span>
<span id="L396" class="LineNr">396 </span>
<span id="L397" class="LineNr">397 </span><span class="Normal">const</span> type_tree* corresponding<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">,</span> <span class="Normal">int</span> index<span class="Delimiter">,</span> <span class="Normal">bool</span> <span class="Normal">final</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L398" class="LineNr">398 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">const</span> type_tree* curr = type<span class="Delimiter">;</span>  curr<span class="Delimiter">;</span>  curr = curr<span class="Delimiter">-&gt;</span>right<span class="Delimiter">,</span> --index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L399" class="LineNr">399 </span>    <a href='003trace.cc.html#L199'>assert_for_now</a><span class="Delimiter">(</span>!curr<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">);</span>
<span id="L400" class="LineNr">400 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>index == <span class="Constant">0</span><span class="Delimiter">)</span>
<span id="L401" class="LineNr">401 </span>      <span class="Identifier">return</span> <span class="Normal">final</span> ? curr : curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L402" class="LineNr">402 </span>  <span class="Delimiter">}</span>
<span id="L403" class="LineNr">403 </span>  <a href='003trace.cc.html#L199'>assert_for_now</a><span class="Delimiter">(</span><span class="Constant">false</span><span class="Delimiter">);</span>
<span id="L404" class="LineNr">404 </span><span class="Delimiter">}</span>
<span id="L405" class="LineNr">405 </span>
<span id="L406" class="LineNr">406 </span><span class="Normal">bool</span> is_type_ingredient<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L407" class="LineNr">407 </span>  <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>atom &amp;&amp; type<span class="Delimiter">-&gt;</span>value &gt;= START_TYPE_INGREDIENTS<span class="Delimiter">;</span>
<span id="L408" class="LineNr">408 </span><span class="Delimiter">}</span>
<span id="L409" class="LineNr">409 </span>
<span id="L410" class="LineNr">410 </span><span class="Normal">int</span> to_type_ingredient_index<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L411" class="LineNr">411 </span>  assert<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">);</span>
<span id="L412" class="LineNr">412 </span>  <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>value-START_TYPE_INGREDIENTS<span class="Delimiter">;</span>
<span id="L413" class="LineNr">413 </span><span class="Delimiter">}</span>
<span id="L414" class="LineNr">414 </span>
<span id="L415" class="LineNr">415 </span><span class="Normal">void</span> replace_type_ingredient_at<span class="Delimiter">(</span><span class="Normal">const</span> <span class="Normal">int</span> type_ingredient_index<span class="Delimiter">,</span> type_tree* <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* callsite_type<span class="Delimiter">,</span> <span class="Normal">const</span> type_info&amp; container_info<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; location_for_error_messages<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L416" class="LineNr">416 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!has_nth_type<span class="Delimiter">(</span>callsite_type<span class="Delimiter">,</span> type_ingredient_index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L417" class="LineNr">417 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;illegal type &quot;</span> &lt;&lt; names_to_string<span class="Delimiter">(</span>callsite_type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; seems to be missing a type ingredient or three&quot;</span> &lt;&lt; location_for_error_messages &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L418" class="LineNr">418 </span>    <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L419" class="LineNr">419 </span>  <span class="Delimiter">}</span>
<span id="L420" class="LineNr">420 </span>  *element_type = *nth_type_ingredient<span class="Delimiter">(</span>callsite_type<span class="Delimiter">,</span> type_ingredient_index<span class="Delimiter">,</span> container_info<span class="Delimiter">);</span>
<span id="L421" class="LineNr">421 </span><span class="Delimiter">}</span>
<span id="L422" class="LineNr">422 </span>
<span id="L423" class="LineNr">423 </span><span class="Normal">const</span> type_tree* nth_type_ingredient<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* callsite_type<span class="Delimiter">,</span> <span class="Normal">int</span> type_ingredient_index<span class="Delimiter">,</span> <span class="Normal">const</span> type_info&amp; container_info<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L424" class="LineNr">424 </span>  <span class="Normal">bool</span> <span class="Normal">final</span> = is_final_type_ingredient<span class="Delimiter">(</span>type_ingredient_index<span class="Delimiter">,</span> container_info<span class="Delimiter">);</span>
<span id="L425" class="LineNr">425 </span>  <span class="Normal">const</span> type_tree* curr = callsite_type<span class="Delimiter">;</span>
<span id="L426" class="LineNr">426 </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; type_ingredient_index<span class="Delimiter">;</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L427" class="LineNr">427 </span>    assert<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L428" class="LineNr">428 </span>    assert<span class="Delimiter">(</span>!curr<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">);</span>
<span id="L429" class="LineNr">429 </span><span class="CommentedCode">//?     cerr &lt;&lt; &quot;type ingredient &quot; &lt;&lt; i &lt;&lt; &quot; is &quot; &lt;&lt; to_string(curr-&gt;left) &lt;&lt; '\n';</span>
<span id="L430" class="LineNr">430 </span>    curr = curr<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
<span id="L431" class="LineNr">431 </span>  <span class="Delimiter">}</span>
<span id="L432" class="LineNr">432 </span>  assert<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L433" class="LineNr">433 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> curr<span class="Delimiter">;</span>
<span id="L434" class="LineNr">434 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!<span class="Normal">final</span><span class="Delimiter">)</span> <span class="Identifier">return</span> curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L435" class="LineNr">435 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Identifier">return</span> curr<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L436" class="LineNr">436 </span>  <span class="Identifier">return</span> curr<span class="Delimiter">;</span>
<span id="L437" class="LineNr">437 </span><span class="Delimiter">}</span>
<span id="L438" class="LineNr">438 </span>
<span id="L439" class="LineNr">439 </span><span class="Normal">bool</span> is_final_type_ingredient<span class="Delimiter">(</span><span class="Normal">int</span> type_ingredient_index<span class="Delimiter">,</span> <span class="Normal">const</span> type_info&amp; container_info<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L440" class="LineNr">440 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;string<span class="Delimiter">,</span> type_ordinal&gt;::const_iterator p = container_info<span class="Delimiter">.</span>type_ingredient_names<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>
<span id="L441" class="LineNr">441 </span>       p != container_info<span class="Delimiter">.</span>type_ingredient_names<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L442" class="LineNr">442 </span>       ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L443" class="LineNr">443 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>second &gt; START_TYPE_INGREDIENTS+type_ingredient_index<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L444" class="LineNr">444 </span>  <span class="Delimiter">}</span>
<span id="L445" class="LineNr">445 </span>  <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L446" class="LineNr">446 </span><span class="Delimiter">}</span>
<span id="L447" class="LineNr">447 </span>
<span id="L448" class="LineNr">448 </span><span class="Delimiter">:(before &quot;End Unit Tests&quot;)</span>
<span id="L449" class="LineNr">449 </span><span class="Normal">void</span> test_replace_type_ingredients_entire<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L450" class="LineNr">450 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_elem [\n&quot;</span>
<span id="L451" class="LineNr">451 </span>      <span class="Constant">&quot;  x:_elem\n&quot;</span>
<span id="L452" class="LineNr">452 </span>      <span class="Constant">&quot;  y:num\n&quot;</span>
<span id="L453" class="LineNr">453 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L454" class="LineNr">454 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;x:foo:point&quot;</span><span class="Delimiter">);</span>
<span id="L455" class="LineNr">455 </span>  reagent element = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L456" class="LineNr">456 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">),</span> <span class="Constant">&quot;{x: \&quot;</span>point\<span class="Constant">&quot;}&quot;</span><span class="Delimiter">);</span>
<span id="L457" class="LineNr">457 </span><span class="Delimiter">}</span>
<span id="L458" class="LineNr">458 </span>
<span id="L459" class="LineNr">459 </span><span class="Normal">void</span> test_replace_type_ingredients_tail<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L460" class="LineNr">460 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_elem [\n&quot;</span>
<span id="L461" class="LineNr">461 </span>      <span class="Constant">&quot;  x:_elem\n&quot;</span>
<span id="L462" class="LineNr">462 </span>      <span class="Constant">&quot;]\n&quot;</span>
<span id="L463" class="LineNr">463 </span>      <span class="Constant">&quot;container bar:_elem [\n&quot;</span>
<span id="L464" class="LineNr">464 </span>      <span class="Constant">&quot;  x:foo:_elem\n&quot;</span>
<span id="L465" class="LineNr">465 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L466" class="LineNr">466 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;x:bar:point&quot;</span><span class="Delimiter">);</span>
<span id="L467" class="LineNr">467 </span>  reagent element = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L468" class="LineNr">468 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">),</span> <span class="Constant">&quot;{x: (\&quot;</span>foo\<span class="Constant">&quot; \&quot;</span>point\<span class="Constant">&quot;)}&quot;</span><span class="Delimiter">);</span>
<span id="L469" class="LineNr">469 </span><span class="Delimiter">}</span>
<span id="L470" class="LineNr">470 </span>
<span id="L471" class="LineNr">471 </span><span class="Normal">void</span> test_replace_type_ingredients_head_tail_multiple<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L472" class="LineNr">472 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_elem [\n&quot;</span>
<span id="L473" class="LineNr">473 </span>      <span class="Constant">&quot;  x:_elem\n&quot;</span>
<span id="L474" class="LineNr">474 </span>      <span class="Constant">&quot;]\n&quot;</span>
<span id="L475" class="LineNr">475 </span>      <span class="Constant">&quot;container bar:_elem [\n&quot;</span>
<span id="L476" class="LineNr">476 </span>      <span class="Constant">&quot;  x:foo:_elem\n&quot;</span>
<span id="L477" class="LineNr">477 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L478" class="LineNr">478 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;x:bar:<a href='043space.cc.html#L101'>address</a>:array:character&quot;</span><span class="Delimiter">);</span>
<span id="L479" class="LineNr">479 </span>  reagent element = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L480" class="LineNr">480 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">),</span> <span class="Constant">&quot;{x: (\&quot;</span>foo\<span class="Constant">&quot; \&quot;</span>address\<span class="Constant">&quot; \&quot;</span>array\<span class="Constant">&quot; \&quot;</span>character\<span class="Constant">&quot;)}&quot;</span><span class="Delimiter">);</span>
<span id="L481" class="LineNr">481 </span><span class="Delimiter">}</span>
<span id="L482" class="LineNr">482 </span>
<span id="L483" class="LineNr">483 </span><span class="Normal">void</span> test_replace_type_ingredients_head_middle<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L484" class="LineNr">484 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_elem [\n&quot;</span>
<span id="L485" class="LineNr">485 </span>      <span class="Constant">&quot;  x:_elem\n&quot;</span>
<span id="L486" class="LineNr">486 </span>      <span class="Constant">&quot;]\n&quot;</span>
<span id="L487" class="LineNr">487 </span>      <span class="Constant">&quot;container bar:_elem [\n&quot;</span>
<span id="L488" class="LineNr">488 </span>      <span class="Constant">&quot;  x:foo:_elem:num\n&quot;</span>
<span id="L489" class="LineNr">489 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L490" class="LineNr">490 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;x:bar:address&quot;</span><span class="Delimiter">);</span>
<span id="L491" class="LineNr">491 </span>  reagent element = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L492" class="LineNr">492 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">),</span> <span class="Constant">&quot;{x: (\&quot;</span>foo\<span class="Constant">&quot; \&quot;</span>address\<span class="Constant">&quot; \&quot;</span>number\<span class="Constant">&quot;)}&quot;</span><span class="Delimiter">);</span>
<span id="L493" class="LineNr">493 </span><span class="Delimiter">}</span>
<span id="L494" class="LineNr">494 </span>
<span id="L495" class="LineNr">495 </span><span class="Normal">void</span> test_replace_last_type_ingredient_with_multiple<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L496" class="LineNr">496 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_a:_b [\n&quot;</span>
<span id="L497" class="LineNr">497 </span>      <span class="Constant">&quot;  x:_a\n&quot;</span>
<span id="L498" class="LineNr">498 </span>      <span class="Constant">&quot;  y:_b\n&quot;</span>
<span id="L499" class="LineNr">499 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L500" class="LineNr">500 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;{f: (foo number (address array character))}&quot;</span><span class="Delimiter">);</span>
<span id="L501" class="LineNr">501 </span>  reagent element1 = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L502" class="LineNr">502 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element1<span class="Delimiter">),</span> <span class="Constant">&quot;{x: \&quot;</span>number\<span class="Constant">&quot;}&quot;</span><span class="Delimiter">);</span>
<span id="L503" class="LineNr">503 </span>  reagent element2 = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L504" class="LineNr">504 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element2<span class="Delimiter">),</span> <span class="Constant">&quot;{y: (\&quot;</span>address\<span class="Constant">&quot; \&quot;</span>array\<span class="Constant">&quot; \&quot;</span>character\<span class="Constant">&quot;)}&quot;</span><span class="Delimiter">);</span>
<span id="L505" class="LineNr">505 </span><span class="Delimiter">}</span>
<span id="L506" class="LineNr">506 </span>
<span id="L507" class="LineNr">507 </span><span class="Normal">void</span> test_replace_last_type_ingredient_inside_compound<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L508" class="LineNr">508 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_a:_b [\n&quot;</span>
<span id="L509" class="LineNr">509 </span>      <span class="Constant">&quot;  {x: (bar _a (address _b))}\n&quot;</span>
<span id="L510" class="LineNr">510 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L511" class="LineNr">511 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;f:foo:number:array:character&quot;</span><span class="Delimiter">);</span>
<span id="L512" class="LineNr">512 </span>  reagent element = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L513" class="LineNr">513 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span>names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">),</span> <span class="Constant">&quot;(bar number (address array character))&quot;</span><span class="Delimiter">);</span>
<span id="L514" class="LineNr">514 </span><span class="Delimiter">}</span>
<span id="L515" class="LineNr">515 </span>
<span id="L516" class="LineNr">516 </span><span class="Normal">void</span> test_replace_middle_type_ingredient_with_multiple<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L517" class="LineNr">517 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_a:_b:_c [\n&quot;</span>
<span id="L518" class="LineNr">518 </span>      <span class="Constant">&quot;  x:_a\n&quot;</span>
<span id="L519" class="LineNr">519 </span>      <span class="Constant">&quot;  y:_b\n&quot;</span>
<span id="L520" class="LineNr">520 </span>      <span class="Constant">&quot;  z:_c\n&quot;</span>
<span id="L521" class="LineNr">521 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L522" class="LineNr">522 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;{f: (foo number (address array character) boolean)}&quot;</span><span class="Delimiter">);</span>
<span id="L523" class="LineNr">523 </span>  reagent element1 = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L524" class="LineNr">524 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element1<span class="Delimiter">),</span> <span class="Constant">&quot;{x: \&quot;</span>number\<span class="Constant">&quot;}&quot;</span><span class="Delimiter">);</span>
<span id="L525" class="LineNr">525 </span>  reagent element2 = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L526" class="LineNr">526 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element2<span class="Delimiter">),</span> <span class="Constant">&quot;{y: (\&quot;</span>address\<span class="Constant">&quot; \&quot;</span>array\<span class="Constant">&quot; \&quot;</span>character\<span class="Constant">&quot;)}&quot;</span><span class="Delimiter">);</span>
<span id="L527" class="LineNr">527 </span>  reagent element3 = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L528" class="LineNr">528 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element3<span class="Delimiter">),</span> <span class="Constant">&quot;{z: \&quot;</span>boolean\<span class="Constant">&quot;}&quot;</span><span class="Delimiter">);</span>
<span id="L529" class="LineNr">529 </span><span class="Delimiter">}</span>
<span id="L530" class="LineNr">530 </span>
<span id="L531" class="LineNr">531 </span><span class="Normal">void</span> test_replace_middle_type_ingredient_with_multiple2<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L532" class="LineNr">532 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo:_key:_value [\n&quot;</span>
<span id="L533" class="LineNr">533 </span>      <span class="Constant">&quot;  key:_key\n&quot;</span>
<span id="L534" class="LineNr">534 </span>      <span class="Constant">&quot;  value:_value\n&quot;</span>
<span id="L535" class="LineNr">535 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L536" class="LineNr">536 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;{f: (foo (address array character) number)}&quot;</span><span class="Delimiter">);</span>
<span id="L537" class="LineNr">537 </span>  reagent element = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L538" class="LineNr">538 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">),</span> <span class="Constant">&quot;{key: (\&quot;</span>address\<span class="Constant">&quot; \&quot;</span>array\<span class="Constant">&quot; \&quot;</span>character\<span class="Constant">&quot;)}&quot;</span><span class="Delimiter">);</span>
<span id="L539" class="LineNr">539 </span><span class="Delimiter">}</span>
<span id="L540" class="LineNr">540 </span>
<span id="L541" class="LineNr">541 </span><span class="Normal">void</span> test_replace_middle_type_ingredient_with_multiple3<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L542" class="LineNr">542 </span>  run<span class="Delimiter">(</span><span class="Constant">&quot;container foo_table:_key:_value [\n&quot;</span>
<span id="L543" class="LineNr">543 </span>      <span class="Constant">&quot;  data:&amp;:@:foo_table_row:_key:_value\n&quot;</span>
<span id="L544" class="LineNr">544 </span>      <span class="Constant">&quot;]\n&quot;</span>
<span id="L545" class="LineNr">545 </span>      <span class="Constant">&quot;\n&quot;</span>
<span id="L546" class="LineNr">546 </span>      <span class="Constant">&quot;container foo_table_row:_key:_value [\n&quot;</span>
<span id="L547" class="LineNr">547 </span>      <span class="Constant">&quot;  key:_key\n&quot;</span>
<span id="L548" class="LineNr">548 </span>      <span class="Constant">&quot;  value:_value\n&quot;</span>
<span id="L549" class="LineNr">549 </span>      <span class="Constant">&quot;]\n&quot;</span><span class="Delimiter">);</span>
<span id="L550" class="LineNr">550 </span>  reagent callsite<span class="Delimiter">(</span><span class="Constant">&quot;{f: (foo_table (address array character) number)}&quot;</span><span class="Delimiter">);</span>
<span id="L551" class="LineNr">551 </span>  reagent element = <a href='030container.cc.html#L212'>element_type</a><span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L552" class="LineNr">552 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">),</span> <span class="Constant">&quot;{data: (\&quot;</span>address\<span class="Constant">&quot; \&quot;</span>array\<span class="Constant">&quot; \&quot;</span>foo_table_row\<span class="Constant">&quot; (\&quot;</span>address\<span class="Constant">&quot; \&quot;</span>array\<span class="Constant">&quot; \&quot;</span>character\<span class="Constant">&quot;) \&quot;</span>number\<span class="Constant">&quot;)}&quot;</span><span class="Delimiter">);</span>
<span id="L553" class="LineNr">553 </span><span class="Delimiter">}</span>
<span id="L554" class="LineNr">554 </span>
<span id="L555" class="LineNr">555 </span><span class="Delimiter">:(code)</span>
<span id="L556" class="LineNr">556 </span><span class="Normal">bool</span> has_nth_type<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* base<span class="Delimiter">,</span> <span class="Normal">int</span> n<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L557" class="LineNr">557 </span>  assert<span class="Delimiter">(</span>n &gt;= <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L558" class="LineNr">558 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!base<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L559" class="LineNr">559 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>n == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L560" class="LineNr">560 </span>  <span class="Identifier">return</span> has_nth_type<span class="Delimiter">(</span>base<span class="Delimiter">-&gt;</span>right<span class="Delimiter">,</span> n-<span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L561" class="LineNr">561 </span><span class="Delimiter">}</span>
<span id="L562" class="LineNr">562 </span>
<span id="L563" class="LineNr">563 </span><span class="Delimiter">:(scenario get_on_shape_shifting_container_error)</span>
<span id="L564" class="LineNr">564 </span><span class="Special">% Hide_errors = true;</span>
<span id="L565" class="LineNr">565 </span><span class="muData">container</span> foo:_t [
<span id="L566" class="LineNr">566 </span>  <span class="Normal">x</span>:_t
<span id="L567" class="LineNr">567 </span>  <span class="Normal">y</span>:num
<span id="L568" class="LineNr">568 </span>]
<span id="L569" class="LineNr">569 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L570" class="LineNr">570 </span>  <span class="Constant">1</span>:foo:point<span class="Special"> &lt;- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span id="L571" class="LineNr">571 </span>  <span class="Constant">10</span>:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:foo<span class="Delimiter">,</span> <span class="Constant">1:offset</span>
<span id="L572" class="LineNr">572 </span>]
<span id="L573" class="LineNr">573 </span><span class="Comment"># todo: improve error message</span>
<span id="L574" class="LineNr">574 </span><span class="traceContains">+error: illegal type &quot;foo&quot; seems to be missing a type ingredient or three while computing element type of container</span>
<span id="L575" class="LineNr">575 </span>
<span id="L576" class="LineNr">576 </span><span class="Delimiter">:(scenario typos_in_container_definitions)</span>
<span id="L577" class="LineNr">577 </span><span class="Special">% Hide_errors = true;</span>
<span id="L578" class="LineNr">578 </span><span class="muData">container</span> foo:_t [
<span id="L579" class="LineNr">579 </span>  <span class="Normal">x</span>:adress:_t  <span class="Comment"># typo</span>
<span id="L580" class="LineNr">580 </span>]
<span id="L581" class="LineNr">581 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L582" class="LineNr">582 </span>  local-scope
<span id="L583" class="LineNr">583 </span>  <span class="Normal">x</span>:<a href='043space.cc.html#L101'>address</a>:foo:num<span class="Special"> &lt;- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>foo num<span class="Delimiter">)</span>: type<span class="Delimiter">}</span>
<span id="L584" class="LineNr">584 </span>]
<span id="L585" class="LineNr">585 </span><span class="Comment"># no crash</span>
<span id="L586" class="LineNr">586 </span>
<span id="L587" class="LineNr">587 </span><span class="Delimiter">:(scenario typos_in_recipes)</span>
<span id="L588" class="LineNr">588 </span><span class="Special">% Hide_errors = true;</span>
<span id="L589" class="LineNr">589 </span><span class="muRecipe">def</span> foo [
<span id="L590" class="LineNr">590 </span>  local-scope
<span id="L591" class="LineNr">591 </span>  <span class="Normal">x</span>:adress:array:number<span class="Special"> &lt;- </span>copy<span class="Constant"> null</span>  <span class="Comment"># typo</span>
<span id="L592" class="LineNr">592 </span>]
<span id="L593" class="LineNr">593 </span><span class="Comment"># shouldn't crash</span>
<span id="L594" class="LineNr">594 </span>
<span id="L595" class="LineNr">595 </span><span class="SalientComment">//:: 'merge' on shape-shifting containers</span>
<span id="L596" class="LineNr">596 </span>
<span id="L597" class="LineNr">597 </span><span class="Delimiter">:(scenario merge_check_shape_shifting_container_containing_exclusive_container)</span>
<span id="L598" class="LineNr">598 </span><span class="muData">container</span> foo:_elem [
<span id="L599" class="LineNr">599 </span>  <span class="Normal">x</span>:num
<span id="L600" class="LineNr">600 </span>  <span class="Normal">y</span>:_elem
<span id="L601" class="LineNr">601 </span>]
<span id="L602" class="LineNr">602 </span><span class="muData">exclusive-container</span> bar [
<span id="L603" class="LineNr">603 </span>  <span class="Normal">x</span>:num
<span id="L604" class="LineNr">604 </span>  <span class="Normal">y</span>:num
<span id="L605" class="LineNr">605 </span>]
<span id="L606" class="LineNr">606 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L607" class="LineNr">607 </span>  <span class="Constant">1</span>:foo:bar<span class="Special"> &lt;- </span>merge <span class="Constant">23</span><span class="Delimiter">,</span> <span class="Constant">1</span>/y<span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L608" class="LineNr">608 </span>]
<span id="L609" class="LineNr">609 </span><span class="traceContains">+mem: storing 23 in location 1</span>
<span id="L610" class="LineNr">610 </span><span class="traceContains">+mem: storing 1 in location 2</span>
<span id="L611" class="LineNr">611 </span><span class="traceContains">+mem: storing 34 in location 3</span>
<span id="L612" class="LineNr">612 </span>$error: <span class="Constant">0</span>
<span id="L613" class="LineNr">613 </span>
<span id="L614" class="LineNr">614 </span><span class="Delimiter">:(scenario merge_check_shape_shifting_container_containing_exclusive_container_2)</span>
<span id="L615" class="LineNr">615 </span><span class="Special">% Hide_errors = true;</span>
<span id="L616" class="LineNr">616 </span><span class="muData">container</span> foo:_elem [
<span id="L617" class="LineNr">617 </span>  <span class="Normal">x</span>:num
<span id="L618" class="LineNr">618 </span>  <span class="Normal">y</span>:_elem
<span id="L619" class="LineNr">619 </span>]
<span id="L620" class="LineNr">620 </span><span class="muData">exclusive-container</span> bar [
<span id="L621" class="LineNr">621 </span>  <span class="Normal">x</span>:num
<span id="L622" class="LineNr">622 </span>  <span class="Normal">y</span>:num
<span id="L623" class="LineNr">623 </span>]
<span id="L624" class="LineNr">624 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L625" class="LineNr">625 </span>  <span class="Constant">1</span>:foo:bar<span class="Special"> &lt;- </span>merge <span class="Constant">23</span><span class="Delimiter">,</span> <span class="Constant">1</span>/y<span class="Delimiter">,</span> <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span id="L626" class="LineNr">626 </span>]
<span id="L627" class="LineNr">627 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: too many ingredients in '1:foo:bar &lt;- merge 23, 1/y, 34, 35'</span>
<span id="L628" class="LineNr">628 </span>
<span id="L629" class="LineNr">629 </span><span class="Delimiter">:(scenario merge_check_shape_shifting_exclusive_container_containing_container)</span>
<span id="L630" class="LineNr">630 </span><span class="muData">exclusive-container</span> foo:_elem [
<span id="L631" class="LineNr">631 </span>  <span class="Normal">x</span>:num
<span id="L632" class="LineNr">632 </span>  <span class="Normal">y</span>:_elem
<span id="L633" class="LineNr">633 </span>]
<span id="L634" class="LineNr">634 </span><span class="muData">container</span> bar [
<span id="L635" class="LineNr">635 </span>  <span class="Normal">x</span>:num
<span id="L636" class="LineNr">636 </span>  <span class="Normal">y</span>:num
<span id="L637" class="LineNr">637 </span>]
<span id="L638" class="LineNr">638 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L639" class="LineNr">639 </span>  <span class="Constant">1</span>:foo:bar<span class="Special"> &lt;- </span>merge <span class="Constant">1</span>/y<span class="Delimiter">,</span> <span class="Constant">23</span><span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L640" class="LineNr">640 </span>]
<span id="L641" class="LineNr">641 </span><span class="traceContains">+mem: storing 1 in location 1</span>
<span id="L642" class="LineNr">642 </span><span class="traceContains">+mem: storing 23 in location 2</span>
<span id="L643" class="LineNr">643 </span><span class="traceContains">+mem: storing 34 in location 3</span>
<span id="L644" class="LineNr">644 </span>$error: <span class="Constant">0</span>
<span id="L645" class="LineNr">645 </span>
<span id="L646" class="LineNr">646 </span><span class="Delimiter">:(scenario merge_check_shape_shifting_exclusive_container_containing_container_2)</span>
<span id="L647" class="LineNr">647 </span><span class="muData">exclusive-container</span> foo:_elem [
<span id="L648" class="LineNr">648 </span>  <span class="Normal">x</span>:num
<span id="L649" class="LineNr">649 </span>  <span class="Normal">y</span>:_elem
<span id="L650" class="LineNr">650 </span>]
<span id="L651" class="LineNr">651 </span><span class="muData">container</span> bar [
<span id="L652" class="LineNr">652 </span>  <span class="Normal">x</span>:num
<span id="L653" class="LineNr">653 </span>  <span class="Normal">y</span>:num
<span id="L654" class="LineNr">654 </span>]
<span id="L655" class="LineNr">655 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L656" class="LineNr">656 </span>  <span class="Constant">1</span>:foo:bar<span class="Special"> &lt;- </span>merge <span class="Constant">0</span>/x<span class="Delimiter">,</span> <span class="Constant">23</span>
<span id="L657" class="LineNr">657 </span>]
<span id="L658" class="LineNr">658 </span>$error: <span class="Constant">0</span>
<span id="L659" class="LineNr">659 </span>
<span id="L660" class="LineNr">660 </span><span class="Delimiter">:(scenario merge_check_shape_shifting_exclusive_container_containing_container_3)</span>
<span id="L661" class="LineNr">661 </span><span class="Special">% Hide_errors = true;</span>
<span id="L662" class="LineNr">662 </span><span class="muData">exclusive-container</span> foo:_elem [
<span id="L663" class="LineNr">663 </span>  <span class="Normal">x</span>:num
<span id="L664" class="LineNr">664 </span>  <span class="Normal">y</span>:_elem
<span id="L665" class="LineNr">665 </span>]
<span id="L666" class="LineNr">666 </span><span class="muData">container</span> bar [
<span id="L667" class="LineNr">667 </span>  <span class="Normal">x</span>:num
<span id="L668" class="LineNr">668 </span>  <span class="Normal">y</span>:num
<span id="L669" class="LineNr">669 </span>]
<span id="L670" class="LineNr">670 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L671" class="LineNr">671 </span>  <span class="Constant">1</span>:foo:bar<span class="Special"> &lt;- </span>merge <span class="Constant">1</span>/y<span class="Delimiter">,</span> <span class="Constant">23</span>
<span id="L672" class="LineNr">672 </span>]
<span id="L673" class="LineNr">673 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: too few ingredients in '1:foo:bar &lt;- merge 1/y, 23'</span>
</pre>
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