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mu/html/099hardware_checks.cc.html
Kartik Agaram 08a0eed699 4891 
Couple more tweaks to html rendering:
a) SubX definitions no longer link redundantly to themselves. This long-standing
issue turns out to be tractable to solve for SubX files since the syntax
is so simple.
b) Fix links to SubX definitions in other directories. I forgot that I
have to always generate tags from the directory of the file being linkified.
c) Fix link colors. Before we lost all syntax highlighting for functions
and Globals. Now they maintain their colors, just add an underline.
2018-12-30 00:02:42 -08:00

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<title>Mu - 099hardware_checks.cc</title>
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<a href='https://github.com/akkartik/mu/blob/master/099hardware_checks.cc'>https://github.com/akkartik/mu/blob/master/099hardware_checks.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Let's raise errors when students use real hardware in any recipes besides</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: 'main'. Part of the goal is to teach them testing hygiene and dependency</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: injection.</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//:</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: This is easy to sidestep, it's for feedback rather than safety.</span>
<span id="L6" class="LineNr"> 6 </span>
<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
<span id="L8" class="LineNr"> 8 </span>vector&lt;type_tree*&gt; <span class="Special">Real_hardware_types</span><span class="Delimiter">;</span>
<span id="L9" class="LineNr"> 9 </span><span class="Delimiter">:(before &quot;Begin transform_all&quot;)</span>
<span id="L10" class="LineNr">10 </span><a href='099hardware_checks.cc.html#L14'>setup_real_hardware_types</a><span class="Delimiter">();</span>
<span id="L11" class="LineNr">11 </span><span class="Delimiter">:(before &quot;End transform_all&quot;)</span>
<span id="L12" class="LineNr">12 </span><a href='099hardware_checks.cc.html#L25'>teardown_real_hardware_types</a><span class="Delimiter">();</span>
<span id="L13" class="LineNr">13 </span><span class="Delimiter">:(code)</span>
<span id="L14" class="LineNr">14 </span><span class="Normal">void</span> <a href='099hardware_checks.cc.html#L14'>setup_real_hardware_types</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L15" class="LineNr">15 </span> <span class="Special">Real_hardware_types</span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='099hardware_checks.cc.html#L19'>parse_type</a><span class="Delimiter">(</span><span class="Constant">&quot;address:screen&quot;</span><span class="Delimiter">));</span>
<span id="L16" class="LineNr">16 </span> <span class="Special">Real_hardware_types</span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='099hardware_checks.cc.html#L19'>parse_type</a><span class="Delimiter">(</span><span class="Constant">&quot;address:console&quot;</span><span class="Delimiter">));</span>
<span id="L17" class="LineNr">17 </span> <span class="Special">Real_hardware_types</span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='099hardware_checks.cc.html#L19'>parse_type</a><span class="Delimiter">(</span><span class="Constant">&quot;address:resources&quot;</span><span class="Delimiter">));</span>
<span id="L18" class="LineNr">18 </span><span class="Delimiter">}</span>
<span id="L19" class="LineNr">19 </span>type_tree* <a href='099hardware_checks.cc.html#L19'>parse_type</a><span class="Delimiter">(</span>string s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L20" class="LineNr">20 </span> reagent x<span class="Delimiter">(</span><span class="Constant">&quot;x:&quot;</span>+s<span class="Delimiter">);</span>
<span id="L21" class="LineNr">21 </span> type_tree* result = x<span class="Delimiter">.</span>type<span class="Delimiter">;</span>
<span id="L22" class="LineNr">22 </span> x<span class="Delimiter">.</span>type = <span class="Constant">NULL</span><span class="Delimiter">;</span> <span class="Comment">// don't deallocate on return</span>
<span id="L23" class="LineNr">23 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L24" class="LineNr">24 </span><span class="Delimiter">}</span>
<span id="L25" class="LineNr">25 </span><span class="Normal">void</span> <a href='099hardware_checks.cc.html#L25'>teardown_real_hardware_types</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L26" class="LineNr">26 </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><span class="Special">Real_hardware_types</span><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span id="L27" class="LineNr">27 </span> <span class="Normal">delete</span> <span class="Special">Real_hardware_types</span><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L28" class="LineNr">28 </span> <span class="Special">Real_hardware_types</span><span class="Delimiter">.</span><a href='050scenario.cc.html#L60'>clear</a><span class="Delimiter">();</span>
<span id="L29" class="LineNr">29 </span><span class="Delimiter">}</span>
<span id="L30" class="LineNr">30 </span>
<span id="L31" class="LineNr">31 </span><span class="Delimiter">:(before &quot;End Checks&quot;)</span>
<span id="L32" class="LineNr">32 </span><span class="Special">Transform</span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='099hardware_checks.cc.html#L34'>check_for_misuse_of_real_hardware</a><span class="Delimiter">);</span>
<span id="L33" class="LineNr">33 </span><span class="Delimiter">:(code)</span>
<span id="L34" class="LineNr">34 </span><span class="Normal">void</span> <a href='099hardware_checks.cc.html#L34'>check_for_misuse_of_real_hardware</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="L35" class="LineNr">35 </span> <span class="Normal">const</span> recipe&amp; caller = get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> r<span class="Delimiter">);</span>
<span id="L36" class="LineNr">36 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name == <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L37" class="LineNr">37 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L77'>starts_with</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">,</span> <span class="Constant">&quot;scenario_&quot;</span><span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L38" class="LineNr">38 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;--- check if <a href='010vm.cc.html#L19'>recipe</a> &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; has any dependency-injection mistakes&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L39" class="LineNr">39 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> index = <span class="Constant">0</span><span class="Delimiter">;</span> index &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L40" class="LineNr">40 </span> <span class="Normal">const</span> instruction&amp; inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>index<span class="Delimiter">);</span>
<span id="L41" class="LineNr">41 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='028call_return.cc.html#L115'>is_primitive</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L42" class="LineNr">42 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L43" class="LineNr">43 </span> <span class="Normal">const</span> reagent&amp; ing = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L44" class="LineNr">44 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_literal<span class="Delimiter">(</span>ing<span class="Delimiter">)</span> || ing<span class="Delimiter">.</span>name != <span class="Constant">&quot;0&quot;</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L45" class="LineNr">45 </span> <span class="Normal">const</span> recipe&amp; callee = get<span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">);</span>
<span id="L46" class="LineNr">46 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!callee<span class="Delimiter">.</span>has_header<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L47" class="LineNr">47 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>i &gt;= <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>callee<span class="Delimiter">.</span>ingredients<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L48" class="LineNr">48 </span> <span class="Normal">const</span> reagent&amp; expected_ing = callee<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L49" class="LineNr">49 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><span class="Special">Real_hardware_types</span><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L50" class="LineNr">50 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>*<span class="Special">Real_hardware_types</span><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)</span> == *expected_ing<span class="Delimiter">.</span>type<span class="Delimiter">)</span>
<span id="L51" class="LineNr">51 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;': only 'main' can pass 0 into a &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>expected_ing<span class="Delimiter">.</span>type<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="L52" class="LineNr">52 </span> <span class="Delimiter">}</span>
<span id="L53" class="LineNr">53 </span> <span class="Delimiter">}</span>
<span id="L54" class="LineNr">54 </span> <span class="Delimiter">}</span>
<span id="L55" class="LineNr">55 </span><span class="Delimiter">}</span>
<span id="L56" class="LineNr">56 </span>
<span id="L57" class="LineNr">57 </span><span class="Delimiter">:(scenarios transform)</span>
<span id="L58" class="LineNr">58 </span><span class="Delimiter">:(scenario warn_on_using_real_screen_directly_in_non_main_recipe)</span>
<span id="L59" class="LineNr">59 </span><span class="Special">% Hide_errors = true;</span>
<span id="L60" class="LineNr">60 </span><span class="muRecipe">def</span> foo [
<span id="L61" class="LineNr">61 </span> print <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L62" class="LineNr">62 </span>]
<span id="L63" class="LineNr">63 </span><span class="traceContains">+error: foo: 'print 0, 34': only 'main' can pass 0 into a (address screen)</span>
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