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<a href='https://github.com/akkartik/mu/blob/master/021check_instruction.cc'>https://github.com/akkartik/mu/blob/master/021check_instruction.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Introduce a new transform to perform various checks in instructions before</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: we start running them. It'll be extensible, so that we can add checks for</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: new recipes as we extend 'run' to support them.</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//:</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: Doing checking in a separate part complicates things, because the values</span>
<span id="L6" class="LineNr"> 6 </span><span class="Comment">//: of variables in memory and the processor (current_recipe_name,</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment">//: current_instruction) aren't available at checking time. If I had a more</span>
<span id="L8" class="LineNr"> 8 </span><span class="Comment">//: sophisticated layer system I'd introduce the simpler version first and</span>
<span id="L9" class="LineNr"> 9 </span><span class="Comment">//: transform it in a separate layer or set of layers.</span>
<span id="L10" class="LineNr"> 10 </span>
<span id="L11" class="LineNr"> 11 </span><span class="Delimiter">:(before "End Checks")</span>
<span id="L12" class="LineNr"> 12 </span><span class="Special">Transform</span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='021check_instruction.cc.html#L15'>check_instruction</a><span class="Delimiter">);</span> <span class="Comment">// idempotent</span>
<span id="L13" class="LineNr"> 13 </span>
<span id="L14" class="LineNr"> 14 </span><span class="Delimiter">:(code)</span>
<span id="L15" class="LineNr"> 15 </span><span class="Normal">void</span> <a href='021check_instruction.cc.html#L15'>check_instruction</a><span class="Delimiter">(</span><span class="Normal">const</span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L16" class="LineNr"> 16 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"--- perform checks for <a href='010vm.cc.html#L19'>recipe</a> "</span> << get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L17" class="LineNr"> 17 </span> map<string<span class="Delimiter">,</span> vector<type_ordinal> > metadata<span class="Delimiter">;</span>
<span id="L18" class="LineNr"> 18 </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 < <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L19" class="LineNr"> 19 </span> instruction& inst = get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L20" class="LineNr"> 20 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>is_label<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L21" class="LineNr"> 21 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L22" class="LineNr"> 22 </span> <span class="Comment">// Primitive Recipe Checks</span>
<span id="L23" class="LineNr"> 23 </span> <span class="Normal">case</span> <a href='010vm.cc.html#L196'>COPY</a>: <span class="Delimiter">{</span>
<span id="L24" class="LineNr"> 24 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> > <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L25" class="LineNr"> 25 </span> <a href='003trace.cc.html#L196'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"too many products in '"</span> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'\n"</span> << <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L26" class="LineNr"> 26 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L27" class="LineNr"> 27 </span> <span class="Delimiter">}</span>
<span id="L28" class="LineNr"> 28 </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 < <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L29" class="LineNr"> 29 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L30" class="LineNr"> 30 </span> <a href='003trace.cc.html#L196'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"can't copy '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>original_string << <span class="Constant">"' to '"</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>original_string << <span class="Constant">"'; types don't match\n"</span> << <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L31" class="LineNr"> 31 </span> <span class="Identifier">goto</span> finish_checking_instruction<span class="Delimiter">;</span>
<span id="L32" class="LineNr"> 32 </span> <span class="Delimiter">}</span>
<span id="L33" class="LineNr"> 33 </span> <span class="Delimiter">}</span>
<span id="L34" class="LineNr"> 34 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L35" class="LineNr"> 35 </span> <span class="Delimiter">}</span>
<span id="L36" class="LineNr"> 36 </span> <span class="Comment">// End Primitive Recipe Checks</span>
<span id="L37" class="LineNr"> 37 </span> <span class="Normal">default</span>: <span class="Delimiter">{</span>
<span id="L38" class="LineNr"> 38 </span> <span class="Comment">// Defined Recipe Checks</span>
<span id="L39" class="LineNr"> 39 </span> <span class="Comment">// End Defined Recipe Checks</span>
<span id="L40" class="LineNr"> 40 </span> <span class="Delimiter">}</span>
<span id="L41" class="LineNr"> 41 </span> <span class="Delimiter">}</span>
<span id="L42" class="LineNr"> 42 </span> <span class="Normal">finish_checking_instruction</span>:<span class="Delimiter">;</span>
<span id="L43" class="LineNr"> 43 </span> <span class="Delimiter">}</span>
<span id="L44" class="LineNr"> 44 </span><span class="Delimiter">}</span>
<span id="L45" class="LineNr"> 45 </span>
<span id="L46" class="LineNr"> 46 </span><span class="Delimiter">:(scenario copy_checks_reagent_count)</span>
<span id="L47" class="LineNr"> 47 </span><span class="Special">% Hide_errors = true;</span>
<span id="L48" class="LineNr"> 48 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L49" class="LineNr"> 49 </span> <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:num<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span id="L50" class="LineNr"> 50 </span>]
<span id="L51" class="LineNr"> 51 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: too many products in '1:num, 2:num <- copy 34'</span>
<span id="L52" class="LineNr"> 52 </span>
<span id="L53" class="LineNr"> 53 </span><span class="Delimiter">:(scenario write_scalar_to_array_disallowed)</span>
<span id="L54" class="LineNr"> 54 </span><span class="Special">% Hide_errors = true;</span>
<span id="L55" class="LineNr"> 55 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L56" class="LineNr"> 56 </span> <span class="Constant">1</span>:array:num<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span id="L57" class="LineNr"> 57 </span>]
<span id="L58" class="LineNr"> 58 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: can't copy '34' to '1:array:num'; types don't match</span>
<span id="L59" class="LineNr"> 59 </span>
<span id="L60" class="LineNr"> 60 </span><span class="Delimiter">:(scenario write_scalar_to_array_disallowed_2)</span>
<span id="L61" class="LineNr"> 61 </span><span class="Special">% Hide_errors = true;</span>
<span id="L62" class="LineNr"> 62 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L63" class="LineNr"> 63 </span> <span class="Constant">1</span>:num<span class="Delimiter">,</span> <span class="Constant">2</span>:array:num<span class="Special"> <- </span>copy <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span id="L64" class="LineNr"> 64 </span>]
<span id="L65" class="LineNr"> 65 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: can't copy '35' to '2:array:num'; types don't match</span>
<span id="L66" class="LineNr"> 66 </span>
<span id="L67" class="LineNr"> 67 </span><span class="Delimiter">:(scenario write_scalar_to_address_disallowed)</span>
<span id="L68" class="LineNr"> 68 </span><span class="Special">% Hide_errors = true;</span>
<span id="L69" class="LineNr"> 69 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L70" class="LineNr"> 70 </span> <span class="Constant">1</span>:&:num<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span id="L71" class="LineNr"> 71 </span>]
<span id="L72" class="LineNr"> 72 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: can't copy '34' to '1:&:num'; types don't match</span>
<span id="L73" class="LineNr"> 73 </span>
<span id="L74" class="LineNr"> 74 </span><span class="Delimiter">:(scenario write_address_to_character_disallowed)</span>
<span id="L75" class="LineNr"> 75 </span><span class="Special">% Hide_errors = true;</span>
<span id="L76" class="LineNr"> 76 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L77" class="LineNr"> 77 </span> <span class="Constant">1</span>:&:num<span class="Special"> <- </span>copy <span class="Constant">12</span>/unsafe
<span id="L78" class="LineNr"> 78 </span> <span class="Constant">2</span>:<span class="Normal">char</span><span class="Special"> <- </span>copy <span class="Constant">1</span>:&:num
<span id="L79" class="LineNr"> 79 </span>]
<span id="L80" class="LineNr"> 80 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: can't copy '1:&:num' to '2:char'; types don't match</span>
<span id="L81" class="LineNr"> 81 </span>
<span id="L82" class="LineNr"> 82 </span><span class="Delimiter">:(scenario write_number_to_character_allowed)</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>:num<span class="Special"> <- </span>copy <span class="Constant">97</span>
<span id="L85" class="LineNr"> 85 </span> <span class="Constant">2</span>:<span class="Normal">char</span><span class="Special"> <- </span>copy <span class="Constant">1</span>:num
<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">:(code)</span>
<span id="L90" class="LineNr"> 90 </span><span class="Comment">// types_match with some leniency</span>
<span id="L91" class="LineNr"> 91 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L91'>types_coercible</a><span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> to<span class="Delimiter">,</span> reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Comment">// Begin types_coercible(reagent to, reagent from)</span>
<span id="L93" class="LineNr"> 93 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='021check_instruction.cc.html#L99'>types_match_sub</a><span class="Delimiter">(</span>to<span class="Delimiter">,</span> from<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L94" class="LineNr"> 94 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='021check_instruction.cc.html#L212'>is_real_mu_number</a><span class="Delimiter">(</span>from<span class="Delimiter">)</span> && is_mu_character<span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L95" class="LineNr"> 95 </span> <span class="Comment">// End types_coercible Special-cases</span>
<span id="L96" class="LineNr"> 96 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L97" class="LineNr"> 97 </span><span class="Delimiter">}</span>
<span id="L98" class="LineNr"> 98 </span>
<span id="L99" class="LineNr"> 99 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L99'>types_match_sub</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent& to<span class="Delimiter">,</span> <span class="Normal">const</span> reagent& from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L100" class="LineNr">100 </span> <span class="Comment">// to sidestep type-checking, use /unsafe in the source.</span>
<span id="L101" class="LineNr">101 </span> <span class="Comment">// this will be highlighted in red inside vim. just for setting up some tests.</span>
<span id="L102" class="LineNr">102 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='021check_instruction.cc.html#L180'>is_unsafe</a><span class="Delimiter">(</span>from<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L103" class="LineNr">103 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>from<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L104" class="LineNr">104 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_array<span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L105" class="LineNr">105 </span> <span class="Comment">// End Matching Types For Literal(to)</span>
<span id="L106" class="LineNr">106 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!to<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="L107" class="LineNr">107 </span> <span class="Comment">// allow writing null to any address</span>
<span id="L108" class="LineNr">108 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_address<span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Identifier">return</span> from<span class="Delimiter">.</span>name == <span class="Constant">"null"</span><span class="Delimiter">;</span>
<span id="L109" class="LineNr">109 </span> <span class="Identifier">return</span> size_of<span class="Delimiter">(</span>to<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">;</span> <span class="Comment">// literals are always scalars</span>
<span id="L110" class="LineNr">110 </span> <span class="Delimiter">}</span>
<span id="L111" class="LineNr">111 </span> <span class="Identifier">return</span> <a href='021check_instruction.cc.html#L120'>types_strictly_match_sub</a><span class="Delimiter">(</span>to<span class="Delimiter">,</span> from<span class="Delimiter">);</span>
<span id="L112" class="LineNr">112 </span><span class="Delimiter">}</span>
<span id="L113" class="LineNr">113 </span><span class="Comment">// variant for others to call</span>
<span id="L114" class="LineNr">114 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L114'>types_match</a><span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> to<span class="Delimiter">,</span> reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L115" class="LineNr">115 </span> <span class="Comment">// Begin types_match(reagent to, reagent from)</span>
<span id="L116" class="LineNr">116 </span> <span class="Identifier">return</span> <a href='021check_instruction.cc.html#L99'>types_match_sub</a><span class="Delimiter">(</span>to<span class="Delimiter">,</span> from<span class="Delimiter">);</span>
<span id="L117" class="LineNr">117 </span><span class="Delimiter">}</span>
<span id="L118" class="LineNr">118 </span>
<span id="L119" class="LineNr">119 </span><span class="Comment">//: copy arguments for later layers</span>
<span id="L120" class="LineNr">120 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L120'>types_strictly_match_sub</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent& to<span class="Delimiter">,</span> <span class="Normal">const</span> reagent& from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L121" class="LineNr">121 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>to<span class="Delimiter">.</span>type == <span class="Constant">NULL</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span> <span class="Comment">// error</span>
<span id="L122" class="LineNr">122 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>from<span class="Delimiter">)</span> && to<span class="Delimiter">.</span>type<span class="Delimiter">-></span>value == <span class="Special">Number_type_ordinal</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L123" class="LineNr">123 </span> <span class="Comment">// to sidestep type-checking, use /unsafe in the source.</span>
<span id="L124" class="LineNr">124 </span> <span class="Comment">// this will be highlighted in red inside vim. just for setting up some tests.</span>
<span id="L125" class="LineNr">125 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='021check_instruction.cc.html#L180'>is_unsafe</a><span class="Delimiter">(</span>from<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L126" class="LineNr">126 </span> <span class="Comment">// '_' never raises type error</span>
<span id="L127" class="LineNr">127 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L128" class="LineNr">128 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!to<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span> !from<span class="Delimiter">.</span>type<span class="Delimiter">;</span>
<span id="L129" class="LineNr">129 </span> <span class="Identifier">return</span> types_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">.</span>type<span class="Delimiter">,</span> from<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span id="L130" class="LineNr">130 </span><span class="Delimiter">}</span>
<span id="L131" class="LineNr">131 </span><span class="Comment">// variant for others to call</span>
<span id="L132" class="LineNr">132 </span><span class="Normal">bool</span> types_strictly_match<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> to<span class="Delimiter">,</span> reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L133" class="LineNr">133 </span> <span class="Comment">// Begin types_strictly_match(reagent to, reagent from)</span>
<span id="L134" class="LineNr">134 </span> <span class="Identifier">return</span> <a href='021check_instruction.cc.html#L120'>types_strictly_match_sub</a><span class="Delimiter">(</span>to<span class="Delimiter">,</span> from<span class="Delimiter">);</span>
<span id="L135" class="LineNr">135 </span><span class="Delimiter">}</span>
<span id="L136" class="LineNr">136 </span>
<span id="L137" class="LineNr">137 </span><span class="Normal">bool</span> types_strictly_match<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* to<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L138" class="LineNr">138 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>from == to<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L139" class="LineNr">139 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!to<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L140" class="LineNr">140 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!from<span class="Delimiter">)</span> <span class="Identifier">return</span> to<span class="Delimiter">-></span>atom && to<span class="Delimiter">-></span>value == <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L141" class="LineNr">141 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>atom != to<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L142" class="LineNr">142 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L143" class="LineNr">143 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>value == -<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">return</span> from<span class="Delimiter">-></span>name == to<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
<span id="L144" class="LineNr">144 </span> <span class="Identifier">return</span> from<span class="Delimiter">-></span>value == to<span class="Delimiter">-></span>value<span class="Delimiter">;</span>
<span id="L145" class="LineNr">145 </span> <span class="Delimiter">}</span>
<span id="L146" class="LineNr">146 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>types_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">-></span>left<span class="Delimiter">,</span> from<span class="Delimiter">-></span>left<span class="Delimiter">)</span> && types_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">-></span>right<span class="Delimiter">,</span> from<span class="Delimiter">-></span>right<span class="Delimiter">))</span>
<span id="L147" class="LineNr">147 </span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L148" class="LineNr">148 </span> <span class="Comment">// fallback: (x) == x</span>
<span id="L149" class="LineNr">149 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>to<span class="Delimiter">-></span>right == <span class="Constant">NULL</span> && types_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">-></span>left<span class="Delimiter">,</span> from<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L150" class="LineNr">150 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>right == <span class="Constant">NULL</span> && types_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">,</span> from<span class="Delimiter">-></span>left<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L151" class="LineNr">151 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L152" class="LineNr">152 </span><span class="Delimiter">}</span>
<span id="L153" class="LineNr">153 </span>
<span id="L154" class="LineNr">154 </span><span class="Normal">void</span> <a href='021check_instruction.cc.html#L154'>test_unknown_type_does_not_match_unknown_type</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L155" class="LineNr">155 </span> reagent a<span class="Delimiter">(</span><span class="Constant">"a:foo"</span><span class="Delimiter">);</span>
<span id="L156" class="LineNr">156 </span> reagent b<span class="Delimiter">(</span><span class="Constant">"b:bar"</span><span class="Delimiter">);</span>
<span id="L157" class="LineNr">157 </span> <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>!types_strictly_match<span class="Delimiter">(</span>a<span class="Delimiter">,</span> b<span class="Delimiter">));</span>
<span id="L158" class="LineNr">158 </span><span class="Delimiter">}</span>
<span id="L159" class="LineNr">159 </span>
<span id="L160" class="LineNr">160 </span><span class="Normal">void</span> <a href='021check_instruction.cc.html#L160'>test_unknown_type_matches_itself</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L161" class="LineNr">161 </span> reagent a<span class="Delimiter">(</span><span class="Constant">"a:foo"</span><span class="Delimiter">);</span>
<span id="L162" class="LineNr">162 </span> reagent b<span class="Delimiter">(</span><span class="Constant">"b:foo"</span><span class="Delimiter">);</span>
<span id="L163" class="LineNr">163 </span> <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>types_strictly_match<span class="Delimiter">(</span>a<span class="Delimiter">,</span> b<span class="Delimiter">));</span>
<span id="L164" class="LineNr">164 </span><span class="Delimiter">}</span>
<span id="L165" class="LineNr">165 </span>
<span id="L166" class="LineNr">166 </span><span class="Normal">void</span> <a href='021check_instruction.cc.html#L166'>test_type_abbreviations_match_raw_types</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L167" class="LineNr">167 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Type_abbreviations</span><span class="Delimiter">,</span> <span class="Constant">"text"</span><span class="Delimiter">,</span> <a href='019type_abbreviations.cc.html#L58'>new_type_tree</a><span class="Delimiter">(</span><span class="Constant">"address:array:character"</span><span class="Delimiter">));</span>
<span id="L168" class="LineNr">168 </span> <span class="Comment">// a has type (address buffer (address array character))</span>
<span id="L169" class="LineNr">169 </span> reagent a<span class="Delimiter">(</span><span class="Constant">"a:<a href='043space.cc.html#L101'>address</a>:buffer:text"</span><span class="Delimiter">);</span>
<span id="L170" class="LineNr">170 </span> expand_type_abbreviations<span class="Delimiter">(</span>a<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span id="L171" class="LineNr">171 </span> <span class="Comment">// b has type (address buffer address array character)</span>
<span id="L172" class="LineNr">172 </span> reagent b<span class="Delimiter">(</span><span class="Constant">"b:<a href='043space.cc.html#L101'>address</a>:buffer:<a href='043space.cc.html#L101'>address</a>:array:character"</span><span class="Delimiter">);</span>
<span id="L173" class="LineNr">173 </span> <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>types_strictly_match<span class="Delimiter">(</span>a<span class="Delimiter">,</span> b<span class="Delimiter">));</span>
<span id="L174" class="LineNr">174 </span> <span class="Normal">delete</span> <span class="Special">Type_abbreviations</span>[<span class="Constant">"text"</span>]<span class="Delimiter">;</span>
<span id="L175" class="LineNr">175 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Type_abbreviations</span><span class="Delimiter">,</span> <span class="Constant">"text"</span><span class="Delimiter">,</span> <span class="Constant">NULL</span><span class="Delimiter">);</span>
<span id="L176" class="LineNr">176 </span><span class="Delimiter">}</span>
<span id="L177" class="LineNr">177 </span>
<span id="L178" class="LineNr">178 </span><span class="Comment">//: helpers</span>
<span id="L179" class="LineNr">179 </span>
<span id="L180" class="LineNr">180 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L180'>is_unsafe</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L181" class="LineNr">181 </span> <span class="Identifier">return</span> has_property<span class="Delimiter">(</span>r<span class="Delimiter">,</span> <span class="Constant">"unsafe"</span><span class="Delimiter">);</span>
<span id="L182" class="LineNr">182 </span><span class="Delimiter">}</span>
<span id="L183" class="LineNr">183 </span>
<span id="L184" class="LineNr">184 </span><span class="Normal">bool</span> is_mu_array<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L185" class="LineNr">185 </span> <span class="Comment">// End Preprocess is_mu_array(reagent r)</span>
<span id="L186" class="LineNr">186 </span> <span class="Identifier">return</span> is_mu_array<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span id="L187" class="LineNr">187 </span><span class="Delimiter">}</span>
<span id="L188" class="LineNr">188 </span><span class="Normal">bool</span> is_mu_array<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L189" class="LineNr">189 </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="L190" class="LineNr">190 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<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="L191" class="LineNr">191 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L192" class="LineNr">192 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L193" class="LineNr">193 </span> <a href='003trace.cc.html#L196'>raise</a> << <span class="Constant">"invalid type "</span> << <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>type<span class="Delimiter">)</span> << <span class="cSpecial">'\n'</span> << <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L194" class="LineNr">194 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L195" class="LineNr">195 </span> <span class="Delimiter">}</span>
<span id="L196" class="LineNr">196 </span> <span class="Identifier">return</span> type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>value == <span class="Special">Array_type_ordinal</span><span class="Delimiter">;</span>
<span id="L197" class="LineNr">197 </span><span class="Delimiter">}</span>
<span id="L198" class="LineNr">198 </span>
<span id="L199" class="LineNr">199 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L199'>is_mu_boolean</a><span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L200" class="LineNr">200 </span> <span class="Comment">// End Preprocess is_mu_boolean(reagent r)</span>
<span id="L201" class="LineNr">201 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L202" class="LineNr">202 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L203" class="LineNr">203 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L204" class="LineNr">204 </span> <span class="Identifier">return</span> r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>value == <span class="Special">Boolean_type_ordinal</span><span class="Delimiter">;</span>
<span id="L205" class="LineNr">205 </span><span class="Delimiter">}</span>
<span id="L206" class="LineNr">206 </span>
<span id="L207" class="LineNr">207 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L207'>is_mu_number</a><span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L208" class="LineNr">208 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_character<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> <span class="Comment">// permit arithmetic on unicode code points</span>
<span id="L209" class="LineNr">209 </span> <span class="Identifier">return</span> <a href='021check_instruction.cc.html#L212'>is_real_mu_number</a><span class="Delimiter">(</span>r<span class="Delimiter">);</span>
<span id="L210" class="LineNr">210 </span><span class="Delimiter">}</span>
<span id="L211" class="LineNr">211 </span>
<span id="L212" class="LineNr">212 </span><span class="Normal">bool</span> <a href='021check_instruction.cc.html#L212'>is_real_mu_number</a><span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L213" class="LineNr">213 </span> <span class="Comment">// End Preprocess is_mu_number(reagent r)</span>
<span id="L214" class="LineNr">214 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L215" class="LineNr">215 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L216" class="LineNr">216 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L217" class="LineNr">217 </span> <span class="Identifier">return</span> r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"literal-fractional-number"</span>
<span id="L218" class="LineNr">218 </span> || r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">;</span>
<span id="L219" class="LineNr">219 </span> <span class="Delimiter">}</span>
<span id="L220" class="LineNr">220 </span> <span class="Identifier">return</span> r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>value == <span class="Special">Number_type_ordinal</span><span class="Delimiter">;</span>
<span id="L221" class="LineNr">221 </span><span class="Delimiter">}</span>
<span id="L222" class="LineNr">222 </span>
<span id="L223" class="LineNr">223 </span><span class="Normal">bool</span> is_mu_character<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L224" class="LineNr">224 </span> <span class="Comment">// End Preprocess is_mu_character(reagent r)</span>
<span id="L225" class="LineNr">225 </span> <span class="Identifier">return</span> is_mu_character<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span id="L226" class="LineNr">226 </span><span class="Delimiter">}</span>
<span id="L227" class="LineNr">227 </span><span class="Normal">bool</span> is_mu_character<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L228" class="LineNr">228 </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="L229" class="LineNr">229 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L230" class="LineNr">230 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<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="L231" class="LineNr">231 </span> <span class="Identifier">return</span> type<span class="Delimiter">-></span>value == <span class="Special">Character_type_ordinal</span><span class="Delimiter">;</span>
<span id="L232" class="LineNr">232 </span><span class="Delimiter">}</span>
</pre>
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