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mu/html/011load.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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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - 011load.cc</title>
<meta name="Generator" content="Vim/8.0">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="cpp">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal-light">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.cSpecial { color: #008000; }
.LineNr { }
.traceAbsent { color: #c00000; }
.Constant { color: #008787; }
.muRecipe { color: #ff8700; }
.Delimiter { color: #c000c0; }
.Special { color: #d70000; }
.Identifier { color: #af5f00; }
.Normal { color: #000000; background-color: #c6c6c6; padding-bottom: 1px; }
.Comment { color: #005faf; }
.traceContains { color: #005f00; }
-->
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<a href='https://github.com/akkartik/mu/blob/master/011load.cc'>https://github.com/akkartik/mu/blob/master/011load.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Phase 1 of running Mu code: load it from a textual representation.</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//:</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: The process of running Mu code:</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: load -&gt; transform -&gt; run</span>
<span id="L5" class="LineNr"> 5 </span>
<span id="L6" class="LineNr"> 6 </span><span class="Delimiter">:(scenarios load)</span> <span class="Comment">// use 'load' instead of 'run' in all scenarios in this layer</span>
<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(scenario first_recipe)</span>
<span id="L8" class="LineNr"> 8 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L9" class="LineNr"> 9 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L10" class="LineNr"> 10 </span>]
<span id="L11" class="LineNr"> 11 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L12" class="LineNr"> 12 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L13" class="LineNr"> 13 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L14" class="LineNr"> 14 </span>
<span id="L15" class="LineNr"> 15 </span><span class="Delimiter">:(code)</span>
<span id="L16" class="LineNr"> 16 </span>vector&lt;recipe_ordinal&gt; load<span class="Delimiter">(</span>string form<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L17" class="LineNr"> 17 </span> istringstream in<span class="Delimiter">(</span>form<span class="Delimiter">);</span>
<span id="L18" class="LineNr"> 18 </span> in &gt;&gt; std::noskipws<span class="Delimiter">;</span>
<span id="L19" class="LineNr"> 19 </span> <span class="Identifier">return</span> load<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L20" class="LineNr"> 20 </span><span class="Delimiter">}</span>
<span id="L21" class="LineNr"> 21 </span>
<span id="L22" class="LineNr"> 22 </span>vector&lt;recipe_ordinal&gt; load<span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L23" class="LineNr"> 23 </span> in &gt;&gt; std::noskipws<span class="Delimiter">;</span>
<span id="L24" class="LineNr"> 24 </span> vector&lt;recipe_ordinal&gt; result<span class="Delimiter">;</span>
<span id="L25" class="LineNr"> 25 </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="L26" class="LineNr"> 26 </span> <a href='011load.cc.html#L211'>skip_whitespace_and_comments</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L27" class="LineNr"> 27 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L28" class="LineNr"> 28 </span> string command = <a href='011load.cc.html#L169'>next_word</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L29" class="LineNr"> 29 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>command<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L30" class="LineNr"> 30 </span> assert<span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
<span id="L31" class="LineNr"> 31 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L32" class="LineNr"> 32 </span> <span class="Delimiter">}</span>
<span id="L33" class="LineNr"> 33 </span> <span class="Comment">// Command Handlers</span>
<span id="L34" class="LineNr"> 34 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>command == <span class="Constant">&quot;recipe&quot;</span> || command == <span class="Constant">&quot;def&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L35" class="LineNr"> 35 </span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r = <a href='011load.cc.html#L53'>slurp_recipe</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L36" class="LineNr"> 36 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>r &gt; <span class="Constant">0</span><span class="Delimiter">)</span> result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
<span id="L37" class="LineNr"> 37 </span> <span class="Delimiter">}</span>
<span id="L38" class="LineNr"> 38 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>command == <span class="Constant">&quot;recipe!&quot;</span> || command == <span class="Constant">&quot;def!&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L39" class="LineNr"> 39 </span> <span class="Special">Disable_redefine_checks</span> =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L40" class="LineNr"> 40 </span> <a href='010vm.cc.html#L14'>recipe_ordinal</a> r = <a href='011load.cc.html#L53'>slurp_recipe</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L41" class="LineNr"> 41 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>r &gt; <span class="Constant">0</span><span class="Delimiter">)</span> result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
<span id="L42" class="LineNr"> 42 </span> <span class="Special">Disable_redefine_checks</span> =<span class="Constant"> false</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="Comment">// End Command Handlers</span>
<span id="L45" class="LineNr"> 45 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L46" class="LineNr"> 46 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;unknown top-level command: &quot;</span> &lt;&lt; command &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L47" class="LineNr"> 47 </span> <span class="Delimiter">}</span>
<span id="L48" class="LineNr"> 48 </span> <span class="Delimiter">}</span>
<span id="L49" class="LineNr"> 49 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">}</span>
<span id="L51" class="LineNr"> 51 </span>
<span id="L52" class="LineNr"> 52 </span><span class="Comment">// return the recipe ordinal slurped, or -1 if it failed</span>
<span id="L53" class="LineNr"> 53 </span><span class="Normal">int</span> <a href='011load.cc.html#L53'>slurp_recipe</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L54" class="LineNr"> 54 </span> <a href='010vm.cc.html#L19'>recipe</a> result<span class="Delimiter">;</span>
<span id="L55" class="LineNr"> 55 </span> result<span class="Delimiter">.</span>name = <a href='011load.cc.html#L169'>next_word</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L56" class="LineNr"> 56 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>result<span class="Delimiter">.</span>name<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L57" class="LineNr"> 57 </span> assert<span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
<span id="L58" class="LineNr"> 58 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;file ended with 'recipe'\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L59" class="LineNr"> 59 </span> <span class="Identifier">return</span> -<span class="Constant">1</span><span class="Delimiter">;</span>
<span id="L60" class="LineNr"> 60 </span> <span class="Delimiter">}</span>
<span id="L61" class="LineNr"> 61 </span> <span class="Comment">// End Load Recipe Name</span>
<span id="L62" class="LineNr"> 62 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L63" class="LineNr"> 63 </span> <span class="Comment">// End Recipe Refinements</span>
<span id="L64" class="LineNr"> 64 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>result<span class="Delimiter">.</span>name<span class="Delimiter">.</span>empty<span class="Delimiter">())</span>
<span id="L65" class="LineNr"> 65 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;empty result.name\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L66" class="LineNr"> 66 </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;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;--- defining &quot;</span> &lt;&lt; result<span class="Delimiter">.</span>name &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L67" class="LineNr"> 67 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">))</span>
<span id="L68" class="LineNr"> 68 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">,</span> <span class="Special">Next_recipe_ordinal</span><span class="Delimiter">);</span>
<span id="L69" class="LineNr"> 69 </span> result<span class="Delimiter">.</span>ordinal = get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span id="L70" class="LineNr"> 70 </span> ++<span class="Special">Next_recipe_ordinal</span><span class="Delimiter">;</span>
<span id="L71" class="LineNr"> 71 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">.</span>find<span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">))</span> != <span class="Special">Recipe</span><span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L72" class="LineNr"> 72 </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;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;already exists&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L73" class="LineNr"> 73 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='011load.cc.html#L380'>should_check_for_redefine</a><span class="Delimiter">(</span>result<span class="Delimiter">.</span>name<span class="Delimiter">))</span>
<span id="L74" class="LineNr"> 74 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;redefining <a href='010vm.cc.html#L19'>recipe</a> &quot;</span> &lt;&lt; result<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L75" class="LineNr"> 75 </span> <span class="Special">Recipe</span><span class="Delimiter">.</span>erase<span class="Delimiter">(</span>get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">));</span>
<span id="L76" class="LineNr"> 76 </span> <span class="Delimiter">}</span>
<span id="L77" class="LineNr"> 77 </span> <a href='011load.cc.html#L83'>slurp_body</a><span class="Delimiter">(</span>in<span class="Delimiter">,</span> result<span class="Delimiter">);</span>
<span id="L78" class="LineNr"> 78 </span> <span class="Comment">// End Recipe Body(result)</span>
<span id="L79" class="LineNr"> 79 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span><span class="Special">Recipe</span><span class="Delimiter">,</span> get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">),</span> result<span class="Delimiter">);</span>
<span id="L80" class="LineNr"> 80 </span> <span class="Identifier">return</span> get<span class="Delimiter">(</span><span class="Special">Recipe_ordinal</span><span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span id="L81" class="LineNr"> 81 </span><span class="Delimiter">}</span>
<span id="L82" class="LineNr"> 82 </span>
<span id="L83" class="LineNr"> 83 </span><span class="Normal">void</span> <a href='011load.cc.html#L83'>slurp_body</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">,</span> recipe&amp; result<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L84" class="LineNr"> 84 </span> in &gt;&gt; std::noskipws<span class="Delimiter">;</span>
<span id="L85" class="LineNr"> 85 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L86" class="LineNr"> 86 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>get<span class="Delimiter">()</span> != <span class="Constant">'['</span><span class="Delimiter">)</span>
<span id="L87" class="LineNr"> 87 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; result<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;: <a href='010vm.cc.html#L19'>recipe</a> body must begin with '['\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L88" class="LineNr"> 88 </span> <a href='011load.cc.html#L211'>skip_whitespace_and_comments</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span> <span class="Comment">// permit trailing comment after '['</span>
<span id="L89" class="LineNr"> 89 </span> <a href='010vm.cc.html#L33'>instruction</a> curr<span class="Delimiter">;</span>
<span id="L90" class="LineNr"> 90 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='011load.cc.html#L98'>next_instruction</a><span class="Delimiter">(</span>in<span class="Delimiter">,</span> &amp;curr<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L91" class="LineNr"> 91 </span> curr<span class="Delimiter">.</span>original_string = to_original_string<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Comment">// End Rewrite Instruction(curr, recipe result)</span>
<span id="L93" class="LineNr"> 93 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">&quot;load&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;after rewriting: &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>curr<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L94" class="LineNr"> 94 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">.</span>is_empty<span class="Delimiter">())</span> result<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<span id="L95" class="LineNr"> 95 </span> <span class="Delimiter">}</span>
<span id="L96" class="LineNr"> 96 </span><span class="Delimiter">}</span>
<span id="L97" class="LineNr"> 97 </span>
<span id="L98" class="LineNr"> 98 </span><span class="Normal">bool</span> <a href='011load.cc.html#L98'>next_instruction</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">,</span> instruction* curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L99" class="LineNr"> 99 </span> curr<span class="Delimiter">-&gt;</span><a href='050scenario.cc.html#L60'>clear</a><span class="Delimiter">();</span>
<span id="L100" class="LineNr">100 </span> <a href='011load.cc.html#L211'>skip_whitespace_and_comments</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L101" class="LineNr">101 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L102" class="LineNr">102 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;incomplete <a href='010vm.cc.html#L19'>recipe</a> at <a href='003trace.cc.html#L225'>end</a> of file (0)\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L103" class="LineNr">103 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L104" class="LineNr">104 </span> <span class="Delimiter">}</span>
<span id="L105" class="LineNr">105 </span>
<span id="L106" class="LineNr">106 </span> vector&lt;string&gt; words<span class="Delimiter">;</span>
<span id="L107" class="LineNr">107 </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> &amp;&amp; in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L108" class="LineNr">108 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L109" class="LineNr">109 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L110" class="LineNr">110 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;incomplete <a href='010vm.cc.html#L19'>recipe</a> at <a href='003trace.cc.html#L225'>end</a> of file (1)\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L111" class="LineNr">111 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L112" class="LineNr">112 </span> <span class="Delimiter">}</span>
<span id="L113" class="LineNr">113 </span> string word = <a href='011load.cc.html#L169'>next_word</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L114" class="LineNr">114 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>word<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L115" class="LineNr">115 </span> assert<span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
<span id="L116" class="LineNr">116 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;incomplete <a href='010vm.cc.html#L19'>recipe</a> at <a href='003trace.cc.html#L225'>end</a> of file (2)\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L117" class="LineNr">117 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L118" class="LineNr">118 </span> <span class="Delimiter">}</span>
<span id="L119" class="LineNr">119 </span> words<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>word<span class="Delimiter">);</span>
<span id="L120" class="LineNr">120 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L121" class="LineNr">121 </span> <span class="Delimiter">}</span>
<span id="L122" class="LineNr">122 </span> <a href='011load.cc.html#L211'>skip_whitespace_and_comments</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L123" class="LineNr">123 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>words<span class="Delimiter">)</span> == <span class="Constant">1</span> &amp;&amp; words<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">&quot;]&quot;</span><span class="Delimiter">)</span>
<span id="L124" class="LineNr">124 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span> <span class="Comment">// end of recipe</span>
<span id="L125" class="LineNr">125 </span>
<span id="L126" class="LineNr">126 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>words<span class="Delimiter">)</span> == <span class="Constant">1</span> &amp;&amp; <a href='011load.cc.html#L181'>is_label_word</a><span class="Delimiter">(</span>words<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L127" class="LineNr">127 </span> curr<span class="Delimiter">-&gt;</span>is_label =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L128" class="LineNr">128 </span> curr<span class="Delimiter">-&gt;</span>label = words<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L129" class="LineNr">129 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;label: &quot;</span> &lt;&lt; curr<span class="Delimiter">-&gt;</span>label &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L130" class="LineNr">130 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L131" class="LineNr">131 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;incomplete <a href='010vm.cc.html#L19'>recipe</a> at <a href='003trace.cc.html#L225'>end</a> of file (3)\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L132" class="LineNr">132 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L133" class="LineNr">133 </span> <span class="Delimiter">}</span>
<span id="L134" class="LineNr">134 </span> <span class="Identifier">return</span><span class="Constant"> true</span><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> vector&lt;string&gt;::iterator p = words<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>
<span id="L138" class="LineNr">138 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>find<span class="Delimiter">(</span>words<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> words<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">(),</span> <span class="Constant">&quot;&lt;-&quot;</span><span class="Delimiter">)</span> != words<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L139" class="LineNr">139 </span> <span class="Normal">for</span> <span class="Delimiter">(;</span> *p != <span class="Constant">&quot;&lt;-&quot;</span><span class="Delimiter">;</span> ++p<span class="Delimiter">)</span>
<span id="L140" class="LineNr">140 </span> curr<span class="Delimiter">-&gt;</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>*p<span class="Delimiter">));</span>
<span id="L141" class="LineNr">141 </span> ++p<span class="Delimiter">;</span> <span class="Comment">// skip &lt;-</span>
<span id="L142" class="LineNr">142 </span> <span class="Delimiter">}</span>
<span id="L143" class="LineNr">143 </span>
<span id="L144" class="LineNr">144 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p == words<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L145" class="LineNr">145 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;instruction prematurely ended with '&lt;-'\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L146" class="LineNr">146 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L147" class="LineNr">147 </span> <span class="Delimiter">}</span>
<span id="L148" class="LineNr">148 </span> curr<span class="Delimiter">-&gt;</span>name = *p<span class="Delimiter">;</span> ++p<span class="Delimiter">;</span>
<span id="L149" class="LineNr">149 </span> <span class="Comment">// curr-&gt;operation will be set at transform time</span>
<span id="L150" class="LineNr">150 </span>
<span id="L151" class="LineNr">151 </span> <span class="Normal">for</span> <span class="Delimiter">(;</span> p != words<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span id="L152" class="LineNr">152 </span> curr<span class="Delimiter">-&gt;</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>*p<span class="Delimiter">));</span>
<span id="L153" class="LineNr">153 </span>
<span id="L154" class="LineNr">154 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;instruction: &quot;</span> &lt;&lt; curr<span class="Delimiter">-&gt;</span>name &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L155" class="LineNr">155 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; number of ingredients: &quot;</span> &lt;&lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>curr<span class="Delimiter">-&gt;</span>ingredients<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L156" class="LineNr">156 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>vector&lt;reagent&gt;::iterator p = curr<span class="Delimiter">-&gt;</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != curr<span class="Delimiter">-&gt;</span>ingredients<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span id="L157" class="LineNr">157 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; ingredient: &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>*p<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L158" class="LineNr">158 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>vector&lt;reagent&gt;::iterator p = curr<span class="Delimiter">-&gt;</span>products<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != curr<span class="Delimiter">-&gt;</span>products<span class="Delimiter">.</span><a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span id="L159" class="LineNr">159 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;parse&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; product: &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>*p<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L160" class="LineNr">160 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L161" class="LineNr">161 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;9: unbalanced '[' for recipe\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L162" class="LineNr">162 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L163" class="LineNr">163 </span> <span class="Delimiter">}</span>
<span id="L164" class="LineNr">164 </span> <span class="Comment">// End next_instruction(curr)</span>
<span id="L165" class="LineNr">165 </span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L166" class="LineNr">166 </span><span class="Delimiter">}</span>
<span id="L167" class="LineNr">167 </span>
<span id="L168" class="LineNr">168 </span><span class="Comment">// can return empty string -- only if 'in' has no more data</span>
<span id="L169" class="LineNr">169 </span>string <a href='011load.cc.html#L169'>next_word</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L170" class="LineNr">170 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L171" class="LineNr">171 </span> <span class="Comment">// End next_word Special-cases</span>
<span id="L172" class="LineNr">172 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L173" class="LineNr">173 </span> <a href='011load.cc.html#L195'>slurp_word</a><span class="Delimiter">(</span>in<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<span id="L174" class="LineNr">174 </span> <a href='011load.cc.html#L222'>skip_whitespace_and_comments_but_not_newline</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L175" class="LineNr">175 </span> string result = out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L176" class="LineNr">176 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>result != <span class="Constant">&quot;[&quot;</span> &amp;&amp; <a href='011load.cc.html#L186'>ends_with</a><span class="Delimiter">(</span>result<span class="Delimiter">,</span> <span class="Constant">'['</span><span class="Delimiter">))</span>
<span id="L177" class="LineNr">177 </span> <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;insert a space before '[' in '&quot;</span> &lt;&lt; result &lt;&lt; <span class="Constant">&quot;'\n&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L178" class="LineNr">178 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L179" class="LineNr">179 </span><span class="Delimiter">}</span>
<span id="L180" class="LineNr">180 </span>
<span id="L181" class="LineNr">181 </span><span class="Normal">bool</span> <a href='011load.cc.html#L181'>is_label_word</a><span class="Delimiter">(</span><span class="Normal">const</span> string&amp; word<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L182" class="LineNr">182 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>word<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span> <span class="Comment">// error raised elsewhere</span>
<span id="L183" class="LineNr">183 </span> <span class="Identifier">return</span> !isalnum<span class="Delimiter">(</span>word<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; string<span class="Delimiter">(</span><span class="Constant">&quot;$_*@&amp;,=-[]()&quot;</span><span class="Delimiter">).</span>find<span class="Delimiter">(</span>word<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> == string::npos<span class="Delimiter">;</span>
<span id="L184" class="LineNr">184 </span><span class="Delimiter">}</span>
<span id="L185" class="LineNr">185 </span>
<span id="L186" class="LineNr">186 </span><span class="Normal">bool</span> <a href='011load.cc.html#L186'>ends_with</a><span class="Delimiter">(</span><span class="Normal">const</span> string&amp; s<span class="Delimiter">,</span> <span class="Normal">const</span> <span class="Normal">char</span> c<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L187" class="LineNr">187 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L188" class="LineNr">188 </span> <span class="Identifier">return</span> *s<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == c<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="Delimiter">:(before &quot;End Globals&quot;)</span>
<span id="L192" class="LineNr">192 </span><span class="Comment">// word boundaries</span>
<span id="L193" class="LineNr">193 </span><span class="Normal">extern</span> <span class="Normal">const</span> string <span class="Special">Terminators</span><span class="Delimiter">(</span><span class="Constant">&quot;(){}&quot;</span><span class="Delimiter">);</span>
<span id="L194" class="LineNr">194 </span><span class="Delimiter">:(code)</span>
<span id="L195" class="LineNr">195 </span><span class="Normal">void</span> <a href='011load.cc.html#L195'>slurp_word</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">,</span> ostream&amp; out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L196" class="LineNr">196 </span> <span class="Normal">char</span> c<span class="Delimiter">;</span>
<span id="L197" class="LineNr">197 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L239'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">)</span> &amp;&amp; <span class="Special">Terminators</span><span class="Delimiter">.</span>find<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">())</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L198" class="LineNr">198 </span> in &gt;&gt; c<span class="Delimiter">;</span>
<span id="L199" class="LineNr">199 </span> out &lt;&lt; c<span class="Delimiter">;</span>
<span id="L200" class="LineNr">200 </span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L201" class="LineNr">201 </span> <span class="Delimiter">}</span>
<span id="L202" class="LineNr">202 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>in &gt;&gt; c<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L203" class="LineNr">203 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>c<span class="Delimiter">)</span> || <span class="Special">Terminators</span><span class="Delimiter">.</span>find<span class="Delimiter">(</span>c<span class="Delimiter">)</span> != string::npos || <span class="Special">Ignore</span><span class="Delimiter">.</span>find<span class="Delimiter">(</span>c<span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L204" class="LineNr">204 </span> in<span class="Delimiter">.</span>putback<span class="Delimiter">(</span>c<span class="Delimiter">);</span>
<span id="L205" class="LineNr">205 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L206" class="LineNr">206 </span> <span class="Delimiter">}</span>
<span id="L207" class="LineNr">207 </span> out &lt;&lt; c<span class="Delimiter">;</span>
<span id="L208" class="LineNr">208 </span> <span class="Delimiter">}</span>
<span id="L209" class="LineNr">209 </span><span class="Delimiter">}</span>
<span id="L210" class="LineNr">210 </span>
<span id="L211" class="LineNr">211 </span><span class="Normal">void</span> <a href='011load.cc.html#L211'>skip_whitespace_and_comments</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L212" class="LineNr">212 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L213" class="LineNr">213 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L214" class="LineNr">214 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()))</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L215" class="LineNr">215 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special">Ignore</span><span class="Delimiter">.</span>find<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">())</span> != string::npos<span class="Delimiter">)</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L216" class="LineNr">216 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'#'</span><span class="Delimiter">)</span> <a href='011load.cc.html#L233'>skip_comment</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L217" class="LineNr">217 </span> <span class="Normal">else</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L218" class="LineNr">218 </span> <span class="Delimiter">}</span>
<span id="L219" class="LineNr">219 </span><span class="Delimiter">}</span>
<span id="L220" class="LineNr">220 </span>
<span id="L221" class="LineNr">221 </span><span class="Comment">// confusing; move to the next line only to skip a comment, but never otherwise</span>
<span id="L222" class="LineNr">222 </span><span class="Normal">void</span> <a href='011load.cc.html#L222'>skip_whitespace_and_comments_but_not_newline</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L223" class="LineNr">223 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L224" class="LineNr">224 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L225" class="LineNr">225 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L226" class="LineNr">226 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()))</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L227" class="LineNr">227 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special">Ignore</span><span class="Delimiter">.</span>find<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">())</span> != string::npos<span class="Delimiter">)</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L228" class="LineNr">228 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'#'</span><span class="Delimiter">)</span> <a href='011load.cc.html#L233'>skip_comment</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L229" class="LineNr">229 </span> <span class="Normal">else</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L230" class="LineNr">230 </span> <span class="Delimiter">}</span>
<span id="L231" class="LineNr">231 </span><span class="Delimiter">}</span>
<span id="L232" class="LineNr">232 </span>
<span id="L233" class="LineNr">233 </span><span class="Normal">void</span> <a href='011load.cc.html#L233'>skip_comment</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L234" class="LineNr">234 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L239'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">)</span> &amp;&amp; in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'#'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L235" class="LineNr">235 </span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L236" class="LineNr">236 </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> &amp;&amp; in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L237" class="LineNr">237 </span> <span class="Delimiter">}</span>
<span id="L238" class="LineNr">238 </span><span class="Delimiter">}</span>
<span id="L239" class="LineNr">239 </span>
<span id="L240" class="LineNr">240 </span><span class="Delimiter">:(scenario recipe_instead_of_def)</span>
<span id="L241" class="LineNr">241 </span><span class="muRecipe"><a href='010vm.cc.html#L19'>recipe</a></span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L242" class="LineNr">242 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L243" class="LineNr">243 </span>]
<span id="L244" class="LineNr">244 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L245" class="LineNr">245 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L246" class="LineNr">246 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L247" class="LineNr">247 </span>
<span id="L248" class="LineNr">248 </span><span class="Delimiter">:(scenario parse_comment_outside_recipe)</span>
<span id="L249" class="LineNr">249 </span><span class="Comment"># this comment will be dropped by the tangler, so we need a dummy recipe to stop that</span>
<span id="L250" class="LineNr">250 </span><span class="muRecipe">def</span> f1 [
<span id="L251" class="LineNr">251 </span>]
<span id="L252" class="LineNr">252 </span><span class="Comment"># this comment will go through to 'load'</span>
<span id="L253" class="LineNr">253 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L254" class="LineNr">254 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L255" class="LineNr">255 </span>]
<span id="L256" class="LineNr">256 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L257" class="LineNr">257 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L258" class="LineNr">258 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L259" class="LineNr">259 </span>
<span id="L260" class="LineNr">260 </span><span class="Delimiter">:(scenario parse_comment_amongst_instruction)</span>
<span id="L261" class="LineNr">261 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L262" class="LineNr">262 </span> <span class="Comment"># comment</span>
<span id="L263" class="LineNr">263 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L264" class="LineNr">264 </span>]
<span id="L265" class="LineNr">265 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L266" class="LineNr">266 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L267" class="LineNr">267 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L268" class="LineNr">268 </span>
<span id="L269" class="LineNr">269 </span><span class="Delimiter">:(scenario parse_comment_amongst_instruction_2)</span>
<span id="L270" class="LineNr">270 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L271" class="LineNr">271 </span> <span class="Comment"># comment</span>
<span id="L272" class="LineNr">272 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L273" class="LineNr">273 </span> <span class="Comment"># comment</span>
<span id="L274" class="LineNr">274 </span>]
<span id="L275" class="LineNr">275 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L276" class="LineNr">276 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L277" class="LineNr">277 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L278" class="LineNr">278 </span>
<span id="L279" class="LineNr">279 </span><span class="Delimiter">:(scenario parse_comment_amongst_instruction_3)</span>
<span id="L280" class="LineNr">280 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L281" class="LineNr">281 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L282" class="LineNr">282 </span> <span class="Comment"># comment</span>
<span id="L283" class="LineNr">283 </span> <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L284" class="LineNr">284 </span>]
<span id="L285" class="LineNr">285 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L286" class="LineNr">286 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L287" class="LineNr">287 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L288" class="LineNr">288 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L289" class="LineNr">289 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L290" class="LineNr">290 </span><span class="traceContains">+parse: product: {2: &quot;number&quot;}</span>
<span id="L291" class="LineNr">291 </span>
<span id="L292" class="LineNr">292 </span><span class="Delimiter">:(scenario parse_comment_after_instruction)</span>
<span id="L293" class="LineNr">293 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L294" class="LineNr">294 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span> <span class="Comment"># comment</span>
<span id="L295" class="LineNr">295 </span>]
<span id="L296" class="LineNr">296 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L297" class="LineNr">297 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L298" class="LineNr">298 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L299" class="LineNr">299 </span>
<span id="L300" class="LineNr">300 </span><span class="Delimiter">:(scenario parse_label)</span>
<span id="L301" class="LineNr">301 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L302" class="LineNr">302 </span> +foo
<span id="L303" class="LineNr">303 </span>]
<span id="L304" class="LineNr">304 </span><span class="traceContains">+parse: label: +foo</span>
<span id="L305" class="LineNr">305 </span>
<span id="L306" class="LineNr">306 </span><span class="Delimiter">:(scenario parse_dollar_as_recipe_name)</span>
<span id="L307" class="LineNr">307 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L308" class="LineNr">308 </span> $foo
<span id="L309" class="LineNr">309 </span>]
<span id="L310" class="LineNr">310 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: $foo</span>
<span id="L311" class="LineNr">311 </span>
<span id="L312" class="LineNr">312 </span><span class="Delimiter">:(scenario parse_multiple_properties)</span>
<span id="L313" class="LineNr">313 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L314" class="LineNr">314 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>/foo:bar:baz
<span id="L315" class="LineNr">315 </span>]
<span id="L316" class="LineNr">316 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L317" class="LineNr">317 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;, &quot;foo&quot;: (&quot;bar&quot; &quot;baz&quot;)}</span>
<span id="L318" class="LineNr">318 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L319" class="LineNr">319 </span>
<span id="L320" class="LineNr">320 </span><span class="Delimiter">:(scenario parse_multiple_products)</span>
<span id="L321" class="LineNr">321 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L322" class="LineNr">322 </span> <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L323" class="LineNr">323 </span>]
<span id="L324" class="LineNr">324 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L325" class="LineNr">325 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L326" class="LineNr">326 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L327" class="LineNr">327 </span><span class="traceContains">+parse: product: {2: &quot;number&quot;}</span>
<span id="L328" class="LineNr">328 </span>
<span id="L329" class="LineNr">329 </span><span class="Delimiter">:(scenario parse_multiple_ingredients)</span>
<span id="L330" class="LineNr">330 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L331" class="LineNr">331 </span> <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span><span class="Delimiter">,</span> <span class="Constant">4</span>:number
<span id="L332" class="LineNr">332 </span>]
<span id="L333" class="LineNr">333 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L334" class="LineNr">334 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L335" class="LineNr">335 </span><span class="traceContains">+parse: ingredient: {4: &quot;number&quot;}</span>
<span id="L336" class="LineNr">336 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L337" class="LineNr">337 </span><span class="traceContains">+parse: product: {2: &quot;number&quot;}</span>
<span id="L338" class="LineNr">338 </span>
<span id="L339" class="LineNr">339 </span><span class="Delimiter">:(scenario parse_multiple_types)</span>
<span id="L340" class="LineNr">340 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L341" class="LineNr">341 </span> <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:<a href='043space.cc.html#L101'>address</a>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span><span class="Delimiter">,</span> <span class="Constant">4</span>:number
<span id="L342" class="LineNr">342 </span>]
<span id="L343" class="LineNr">343 </span><span class="traceContains">+parse: <a href='010vm.cc.html#L33'>instruction</a>: copy</span>
<span id="L344" class="LineNr">344 </span><span class="traceContains">+parse: ingredient: {23: &quot;literal&quot;}</span>
<span id="L345" class="LineNr">345 </span><span class="traceContains">+parse: ingredient: {4: &quot;number&quot;}</span>
<span id="L346" class="LineNr">346 </span><span class="traceContains">+parse: product: {1: &quot;number&quot;}</span>
<span id="L347" class="LineNr">347 </span><span class="traceContains">+parse: product: {2: (&quot;address&quot; &quot;number&quot;)}</span>
<span id="L348" class="LineNr">348 </span>
<span id="L349" class="LineNr">349 </span><span class="Delimiter">:(scenario parse_properties)</span>
<span id="L350" class="LineNr">350 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L351" class="LineNr">351 </span> <span class="Constant">1</span>:<a href='043space.cc.html#L101'>address</a>:number/lookup<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L352" class="LineNr">352 </span>]
<span id="L353" class="LineNr">353 </span><span class="traceContains">+parse: product: {1: (&quot;address&quot; &quot;number&quot;), &quot;lookup&quot;: ()}</span>
<span id="L354" class="LineNr">354 </span>
<span id="L355" class="LineNr">355 </span><span class="Comment">//: this test we can't represent with a scenario</span>
<span id="L356" class="LineNr">356 </span><span class="Delimiter">:(code)</span>
<span id="L357" class="LineNr">357 </span><span class="Normal">void</span> <a href='011load.cc.html#L357'>test_parse_comment_terminated_by_eof</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L358" class="LineNr">358 </span> load<span class="Delimiter">(</span><span class="Constant">&quot;recipe <a href='000organization.cc.html#L113'>main</a> [\n&quot;</span>
<span id="L359" class="LineNr">359 </span> <span class="Constant">&quot; a:number &lt;- copy 34\n&quot;</span>
<span id="L360" class="LineNr">360 </span> <span class="Constant">&quot;]\n&quot;</span>
<span id="L361" class="LineNr">361 </span> <span class="Constant">&quot;# abc&quot;</span><span class="Delimiter">);</span> <span class="Comment">// no newline after comment</span>
<span id="L362" class="LineNr">362 </span> cerr &lt;&lt; <span class="Constant">&quot;.&quot;</span><span class="Delimiter">;</span> <span class="Comment">// termination = success</span>
<span id="L363" class="LineNr">363 </span><span class="Delimiter">}</span>
<span id="L364" class="LineNr">364 </span>
<span id="L365" class="LineNr">365 </span><span class="Delimiter">:(scenario warn_on_missing_space_before_bracket)</span>
<span id="L366" class="LineNr">366 </span><span class="Special">% Hide_errors = true;</span>
<span id="L367" class="LineNr">367 </span><span class="muRecipe">def</span> main[
<span id="L368" class="LineNr">368 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L369" class="LineNr">369 </span>]
<span id="L370" class="LineNr">370 </span><span class="traceContains">+error: insert a space before '[' in 'main['</span>
<span id="L371" class="LineNr">371 </span>
<span id="L372" class="LineNr">372 </span><span class="Comment">//: Warn if a recipe gets redefined, because large codebases can accidentally</span>
<span id="L373" class="LineNr">373 </span><span class="Comment">//: step on their own toes. But there'll be many occasions later where</span>
<span id="L374" class="LineNr">374 </span><span class="Comment">//: we'll want to disable the errors.</span>
<span id="L375" class="LineNr">375 </span><span class="Delimiter">:(before &quot;End Globals&quot;)</span>
<span id="L376" class="LineNr">376 </span><span class="Normal">bool</span> <span class="Special">Disable_redefine_checks</span> =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L377" class="LineNr">377 </span><span class="Delimiter">:(before &quot;End Reset&quot;)</span>
<span id="L378" class="LineNr">378 </span><span class="Special">Disable_redefine_checks</span> =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L379" class="LineNr">379 </span><span class="Delimiter">:(code)</span>
<span id="L380" class="LineNr">380 </span><span class="Normal">bool</span> <a href='011load.cc.html#L380'>should_check_for_redefine</a><span class="Delimiter">(</span><span class="Normal">const</span> string&amp; recipe_name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L381" class="LineNr">381 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special">Disable_redefine_checks</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L382" class="LineNr">382 </span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L383" class="LineNr">383 </span><span class="Delimiter">}</span>
<span id="L384" class="LineNr">384 </span>
<span id="L385" class="LineNr">385 </span><span class="Delimiter">:(scenario forbid_redefining_recipes)</span>
<span id="L386" class="LineNr">386 </span><span class="Special">% Hide_errors = true;</span>
<span id="L387" class="LineNr">387 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L388" class="LineNr">388 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L389" class="LineNr">389 </span>]
<span id="L390" class="LineNr">390 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L391" class="LineNr">391 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">24</span>
<span id="L392" class="LineNr">392 </span>]
<span id="L393" class="LineNr">393 </span><span class="traceContains">+error: redefining <a href='010vm.cc.html#L19'>recipe</a> <a href='000organization.cc.html#L113'>main</a></span>
<span id="L394" class="LineNr">394 </span>
<span id="L395" class="LineNr">395 </span><span class="Delimiter">:(scenario permit_forcibly_redefining_recipes)</span>
<span id="L396" class="LineNr">396 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L397" class="LineNr">397 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">23</span>
<span id="L398" class="LineNr">398 </span>]
<span id="L399" class="LineNr">399 </span><span class="muRecipe">def</span>! <a href='000organization.cc.html#L113'>main</a> [
<span id="L400" class="LineNr">400 </span> <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">24</span>
<span id="L401" class="LineNr">401 </span>]
<span id="L402" class="LineNr">402 </span><span class="traceAbsent">-error: redefining <a href='010vm.cc.html#L19'>recipe</a> <a href='000organization.cc.html#L113'>main</a></span>
<span id="L403" class="LineNr">403 </span>$error: <span class="Constant">0</span>
<span id="L404" class="LineNr">404 </span>
<span id="L405" class="LineNr">405 </span><span class="Delimiter">:(code)</span>
<span id="L406" class="LineNr">406 </span><span class="Comment">// for debugging</span>
<span id="L407" class="LineNr">407 </span><span class="Normal">void</span> <a href='011load.cc.html#L407'>show_rest_of_stream</a><span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L408" class="LineNr">408 </span> cerr &lt;&lt; <span class="Constant">'^'</span><span class="Delimiter">;</span>
<span id="L409" class="LineNr">409 </span> <span class="Normal">char</span> c<span class="Delimiter">;</span>
<span id="L410" class="LineNr">410 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>in &gt;&gt; c<span class="Delimiter">)</span>
<span id="L411" class="LineNr">411 </span> cerr &lt;&lt; c<span class="Delimiter">;</span>
<span id="L412" class="LineNr">412 </span> cerr &lt;&lt; <span class="Constant">&quot;$\n&quot;</span><span class="Delimiter">;</span>
<span id="L413" class="LineNr">413 </span> exit<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L414" class="LineNr">414 </span><span class="Delimiter">}</span>
</pre>
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