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<a name="L1"></a><span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Phase 1 of running Mu code: load it from a textual representation.</span>
<a name="L2"></a><span id="L2" class="LineNr"> 2 </span><span class="Comment">//:</span>
<a name="L3"></a><span id="L3" class="LineNr"> 3 </span><span class="Comment">//: The process of running Mu code:</span>
<a name="L4"></a><span id="L4" class="LineNr"> 4 </span><span class="Comment">//: load -> transform -> run</span>
<a name="L5"></a><span id="L5" class="LineNr"> 5 </span>
<a name="L6"></a><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>
<a name="L7"></a><span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(scenario first_recipe)</span>
<a name="L8"></a><span id="L8" class="LineNr"> 8 </span><span class="muRecipe">def</span> main [
<a name="L9"></a><span id="L9" class="LineNr"> 9 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L10"></a><span id="L10" class="LineNr"> 10 </span>]
<a name="L11"></a><span id="L11" class="LineNr"> 11 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L12"></a><span id="L12" class="LineNr"> 12 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L13"></a><span id="L13" class="LineNr"> 13 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L14"></a><span id="L14" class="LineNr"> 14 </span>
<a name="L15"></a><span id="L15" class="LineNr"> 15 </span><span class="Delimiter">:(code)</span>
<a name="L16"></a><span id="L16" class="LineNr"> 16 </span>vector<recipe_ordinal> load<span class="Delimiter">(</span>string form<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L17"></a><span id="L17" class="LineNr"> 17 </span> istringstream in<span class="Delimiter">(</span>form<span class="Delimiter">);</span>
<a name="L18"></a><span id="L18" class="LineNr"> 18 </span> in >> std::noskipws<span class="Delimiter">;</span>
<a name="L19"></a><span id="L19" class="LineNr"> 19 </span> <span class="Identifier">return</span> load<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L20"></a><span id="L20" class="LineNr"> 20 </span><span class="Delimiter">}</span>
<a name="L21"></a><span id="L21" class="LineNr"> 21 </span>
<a name="L22"></a><span id="L22" class="LineNr"> 22 </span>vector<recipe_ordinal> load<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L23"></a><span id="L23" class="LineNr"> 23 </span> in >> std::noskipws<span class="Delimiter">;</span>
<a name="L24"></a><span id="L24" class="LineNr"> 24 </span> vector<recipe_ordinal> result<span class="Delimiter">;</span>
<a name="L25"></a><span id="L25" class="LineNr"> 25 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<a name="L26"></a><span id="L26" class="LineNr"> 26 </span> skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L27"></a><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>
<a name="L28"></a><span id="L28" class="LineNr"> 28 </span> string command = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L29"></a><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>
<a name="L30"></a><span id="L30" class="LineNr"> 30 </span> assert<span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
<a name="L31"></a><span id="L31" class="LineNr"> 31 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<a name="L32"></a><span id="L32" class="LineNr"> 32 </span> <span class="Delimiter">}</span>
<a name="L33"></a><span id="L33" class="LineNr"> 33 </span> <span class="Comment">// Command Handlers</span>
<a name="L34"></a><span id="L34" class="LineNr"> 34 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>command == <span class="Constant">"recipe"</span> || command == <span class="Constant">"def"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L35"></a><span id="L35" class="LineNr"> 35 </span> recipe_ordinal r = slurp_recipe<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L36"></a><span id="L36" class="LineNr"> 36 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>r > <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>
<a name="L37"></a><span id="L37" class="LineNr"> 37 </span> <span class="Delimiter">}</span>
<a name="L38"></a><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">"recipe!"</span> || command == <span class="Constant">"def!"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L39"></a><span id="L39" class="LineNr"> 39 </span> Disable_redefine_checks = <span class="Constant">true</span><span class="Delimiter">;</span>
<a name="L40"></a><span id="L40" class="LineNr"> 40 </span> recipe_ordinal r = slurp_recipe<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L41"></a><span id="L41" class="LineNr"> 41 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>r > <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>
<a name="L42"></a><span id="L42" class="LineNr"> 42 </span> Disable_redefine_checks = <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L43"></a><span id="L43" class="LineNr"> 43 </span> <span class="Delimiter">}</span>
<a name="L44"></a><span id="L44" class="LineNr"> 44 </span> <span class="Comment">// End Command Handlers</span>
<a name="L45"></a><span id="L45" class="LineNr"> 45 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<a name="L46"></a><span id="L46" class="LineNr"> 46 </span> raise << <span class="Constant">"unknown top-level command: "</span> << command << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<a name="L47"></a><span id="L47" class="LineNr"> 47 </span> <span class="Delimiter">}</span>
<a name="L48"></a><span id="L48" class="LineNr"> 48 </span> <span class="Delimiter">}</span>
<a name="L49"></a><span id="L49" class="LineNr"> 49 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<a name="L50"></a><span id="L50" class="LineNr"> 50 </span><span class="Delimiter">}</span>
<a name="L51"></a><span id="L51" class="LineNr"> 51 </span>
<a name="L52"></a><span id="L52" class="LineNr"> 52 </span><span class="Comment">// return the recipe ordinal slurped, or -1 if it failed</span>
<a name="L53"></a><span id="L53" class="LineNr"> 53 </span><span class="Normal">int</span> slurp_recipe<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L54"></a><span id="L54" class="LineNr"> 54 </span> recipe result<span class="Delimiter">;</span>
<a name="L55"></a><span id="L55" class="LineNr"> 55 </span> result<span class="Delimiter">.</span>name = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L56"></a><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>
<a name="L57"></a><span id="L57" class="LineNr"> 57 </span> assert<span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
<a name="L58"></a><span id="L58" class="LineNr"> 58 </span> raise << <span class="Constant">"file ended with 'recipe'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L59"></a><span id="L59" class="LineNr"> 59 </span> <span class="Identifier">return</span> -<span class="Constant">1</span><span class="Delimiter">;</span>
<a name="L60"></a><span id="L60" class="LineNr"> 60 </span> <span class="Delimiter">}</span>
<a name="L61"></a><span id="L61" class="LineNr"> 61 </span> <span class="Comment">// End Load Recipe Name</span>
<a name="L62"></a><span id="L62" class="LineNr"> 62 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L63"></a><span id="L63" class="LineNr"> 63 </span> <span class="Comment">// End Recipe Refinements</span>
<a name="L64"></a><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>
<a name="L65"></a><span id="L65" class="LineNr"> 65 </span> raise << <span class="Constant">"empty result.name</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L66"></a><span id="L66" class="LineNr"> 66 </span> trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">"--- defining "</span> << result<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<a name="L67"></a><span id="L67" class="LineNr"> 67 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">))</span>
<a name="L68"></a><span id="L68" class="LineNr"> 68 </span> put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">,</span> Next_recipe_ordinal++<span class="Delimiter">);</span>
<a name="L69"></a><span id="L69" class="LineNr"> 69 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Recipe<span class="Delimiter">.</span>find<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">))</span> != Recipe<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<a name="L70"></a><span id="L70" class="LineNr"> 70 </span> trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">"already exists"</span> << end<span class="Delimiter">();</span>
<a name="L71"></a><span id="L71" class="LineNr"> 71 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>should_check_for_redefine<span class="Delimiter">(</span>result<span class="Delimiter">.</span>name<span class="Delimiter">))</span>
<a name="L72"></a><span id="L72" class="LineNr"> 72 </span> raise << <span class="Constant">"redefining recipe "</span> << result<span class="Delimiter">.</span>name << <span class="Constant">"</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L73"></a><span id="L73" class="LineNr"> 73 </span> Recipe<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">));</span>
<a name="L74"></a><span id="L74" class="LineNr"> 74 </span> <span class="Delimiter">}</span>
<a name="L75"></a><span id="L75" class="LineNr"> 75 </span> slurp_body<span class="Delimiter">(</span>in<span class="Delimiter">,</span> result<span class="Delimiter">);</span>
<a name="L76"></a><span id="L76" class="LineNr"> 76 </span> <span class="Comment">// End Recipe Body(result)</span>
<a name="L77"></a><span id="L77" class="LineNr"> 77 </span> put<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">),</span> result<span class="Delimiter">);</span>
<a name="L78"></a><span id="L78" class="LineNr"> 78 </span> <span class="Identifier">return</span> get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> result<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<a name="L79"></a><span id="L79" class="LineNr"> 79 </span><span class="Delimiter">}</span>
<a name="L80"></a><span id="L80" class="LineNr"> 80 </span>
<a name="L81"></a><span id="L81" class="LineNr"> 81 </span><span class="Normal">void</span> slurp_body<span class="Delimiter">(</span>istream& in<span class="Delimiter">,</span> recipe& result<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L82"></a><span id="L82" class="LineNr"> 82 </span> in >> std::noskipws<span class="Delimiter">;</span>
<a name="L83"></a><span id="L83" class="LineNr"> 83 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L84"></a><span id="L84" class="LineNr"> 84 </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>
<a name="L85"></a><span id="L85" class="LineNr"> 85 </span> raise << result<span class="Delimiter">.</span>name << <span class="Constant">": recipe body must begin with '['</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L86"></a><span id="L86" class="LineNr"> 86 </span> skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span> <span class="Comment">// permit trailing comment after '['</span>
<a name="L87"></a><span id="L87" class="LineNr"> 87 </span> instruction curr<span class="Delimiter">;</span>
<a name="L88"></a><span id="L88" class="LineNr"> 88 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>next_instruction<span class="Delimiter">(</span>in<span class="Delimiter">,</span> &curr<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<a name="L89"></a><span id="L89" class="LineNr"> 89 </span> curr<span class="Delimiter">.</span>original_string = to_original_string<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
<a name="L90"></a><span id="L90" class="LineNr"> 90 </span> <span class="Comment">// End Rewrite Instruction(curr, recipe result)</span>
<a name="L91"></a><span id="L91" class="LineNr"> 91 </span> trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << <span class="Constant">"after rewriting: "</span> << to_string<span class="Delimiter">(</span>curr<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<a name="L92"></a><span id="L92" class="LineNr"> 92 </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>
<a name="L93"></a><span id="L93" class="LineNr"> 93 </span> <span class="Delimiter">}</span>
<a name="L94"></a><span id="L94" class="LineNr"> 94 </span><span class="Delimiter">}</span>
<a name="L95"></a><span id="L95" class="LineNr"> 95 </span>
<a name="L96"></a><span id="L96" class="LineNr"> 96 </span><span class="Normal">bool</span> next_instruction<span class="Delimiter">(</span>istream& in<span class="Delimiter">,</span> instruction* curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L97"></a><span id="L97" class="LineNr"> 97 </span> curr<span class="Delimiter">-></span>clear<span class="Delimiter">();</span>
<a name="L98"></a><span id="L98" class="LineNr"> 98 </span> skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L99"></a><span id="L99" class="LineNr"> 99 </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>
<a name="L100"></a><span id="L100" class="LineNr">100 </span> raise << <span class="Constant">"incomplete recipe at end of file (0)</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L101"></a><span id="L101" class="LineNr">101 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L102"></a><span id="L102" class="LineNr">102 </span> <span class="Delimiter">}</span>
<a name="L103"></a><span id="L103" class="LineNr">103 </span>
<a name="L104"></a><span id="L104" class="LineNr">104 </span> vector<string> words<span class="Delimiter">;</span>
<a name="L105"></a><span id="L105" class="LineNr">105 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<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="Delimiter">{</span>
<a name="L106"></a><span id="L106" class="LineNr">106 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L107"></a><span id="L107" class="LineNr">107 </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>
<a name="L108"></a><span id="L108" class="LineNr">108 </span> raise << <span class="Constant">"incomplete recipe at end of file (1)</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L109"></a><span id="L109" class="LineNr">109 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L110"></a><span id="L110" class="LineNr">110 </span> <span class="Delimiter">}</span>
<a name="L111"></a><span id="L111" class="LineNr">111 </span> string word = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L112"></a><span id="L112" class="LineNr">112 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>word<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<a name="L113"></a><span id="L113" class="LineNr">113 </span> assert<span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
<a name="L114"></a><span id="L114" class="LineNr">114 </span> raise << <span class="Constant">"incomplete recipe at end of file (2)</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L115"></a><span id="L115" class="LineNr">115 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L116"></a><span id="L116" class="LineNr">116 </span> <span class="Delimiter">}</span>
<a name="L117"></a><span id="L117" class="LineNr">117 </span> words<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>word<span class="Delimiter">);</span>
<a name="L118"></a><span id="L118" class="LineNr">118 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L119"></a><span id="L119" class="LineNr">119 </span> <span class="Delimiter">}</span>
<a name="L120"></a><span id="L120" class="LineNr">120 </span> skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L121"></a><span id="L121" class="LineNr">121 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>words<span class="Delimiter">)</span> == <span class="Constant">1</span> && words<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">"]"</span><span class="Delimiter">)</span>
<a name="L122"></a><span id="L122" class="LineNr">122 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> <span class="Comment">// end of recipe</span>
<a name="L123"></a><span id="L123" class="LineNr">123 </span>
<a name="L124"></a><span id="L124" class="LineNr">124 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>words<span class="Delimiter">)</span> == <span class="Constant">1</span> && is_label_word<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>
<a name="L125"></a><span id="L125" class="LineNr">125 </span> curr<span class="Delimiter">-></span>is_label = <span class="Constant">true</span><span class="Delimiter">;</span>
<a name="L126"></a><span id="L126" class="LineNr">126 </span> curr<span class="Delimiter">-></span>label = words<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<a name="L127"></a><span id="L127" class="LineNr">127 </span> trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">"label: "</span> << curr<span class="Delimiter">-></span>label << end<span class="Delimiter">();</span>
<a name="L128"></a><span id="L128" class="LineNr">128 </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>
<a name="L129"></a><span id="L129" class="LineNr">129 </span> raise << <span class="Constant">"incomplete recipe at end of file (3)</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L130"></a><span id="L130" class="LineNr">130 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L131"></a><span id="L131" class="LineNr">131 </span> <span class="Delimiter">}</span>
<a name="L132"></a><span id="L132" class="LineNr">132 </span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<a name="L133"></a><span id="L133" class="LineNr">133 </span> <span class="Delimiter">}</span>
<a name="L134"></a><span id="L134" class="LineNr">134 </span>
<a name="L135"></a><span id="L135" class="LineNr">135 </span> vector<string>::iterator p = words<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>
<a name="L136"></a><span id="L136" class="LineNr">136 </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>end<span class="Delimiter">(),</span> <span class="Constant">"<-"</span><span class="Delimiter">)</span> != words<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<a name="L137"></a><span id="L137" class="LineNr">137 </span> <span class="Normal">for</span> <span class="Delimiter">(;</span> *p != <span class="Constant">"<-"</span><span class="Delimiter">;</span> ++p<span class="Delimiter">)</span>
<a name="L138"></a><span id="L138" class="LineNr">138 </span> curr<span class="Delimiter">-></span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>*p<span class="Delimiter">));</span>
<a name="L139"></a><span id="L139" class="LineNr">139 </span> ++p<span class="Delimiter">;</span> <span class="Comment">// skip <-</span>
<a name="L140"></a><span id="L140" class="LineNr">140 </span> <span class="Delimiter">}</span>
<a name="L141"></a><span id="L141" class="LineNr">141 </span>
<a name="L142"></a><span id="L142" class="LineNr">142 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p == words<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<a name="L143"></a><span id="L143" class="LineNr">143 </span> raise << <span class="Constant">"instruction prematurely ended with '<-'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L144"></a><span id="L144" class="LineNr">144 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L145"></a><span id="L145" class="LineNr">145 </span> <span class="Delimiter">}</span>
<a name="L146"></a><span id="L146" class="LineNr">146 </span> curr<span class="Delimiter">-></span>old_name = curr<span class="Delimiter">-></span>name = *p<span class="Delimiter">;</span> ++p<span class="Delimiter">;</span>
<a name="L147"></a><span id="L147" class="LineNr">147 </span> <span class="Comment">// curr->operation will be set at transform time</span>
<a name="L148"></a><span id="L148" class="LineNr">148 </span>
<a name="L149"></a><span id="L149" class="LineNr">149 </span> <span class="Normal">for</span> <span class="Delimiter">(;</span> p != words<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<a name="L150"></a><span id="L150" class="LineNr">150 </span> curr<span class="Delimiter">-></span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>*p<span class="Delimiter">));</span>
<a name="L151"></a><span id="L151" class="LineNr">151 </span>
<a name="L152"></a><span id="L152" class="LineNr">152 </span> trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">"instruction: "</span> << curr<span class="Delimiter">-></span>name << end<span class="Delimiter">();</span>
<a name="L153"></a><span id="L153" class="LineNr">153 </span> trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">" number of ingredients: "</span> << SIZE<span class="Delimiter">(</span>curr<span class="Delimiter">-></span>ingredients<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<a name="L154"></a><span id="L154" class="LineNr">154 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>vector<reagent>::iterator p = curr<span class="Delimiter">-></span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != curr<span class="Delimiter">-></span>ingredients<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<a name="L155"></a><span id="L155" class="LineNr">155 </span> trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">" ingredient: "</span> << to_string<span class="Delimiter">(</span>*p<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<a name="L156"></a><span id="L156" class="LineNr">156 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>vector<reagent>::iterator p = curr<span class="Delimiter">-></span>products<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != curr<span class="Delimiter">-></span>products<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<a name="L157"></a><span id="L157" class="LineNr">157 </span> trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"parse"</span><span class="Delimiter">)</span> << <span class="Constant">" product: "</span> << to_string<span class="Delimiter">(</span>*p<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<a name="L158"></a><span id="L158" class="LineNr">158 </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>
<a name="L159"></a><span id="L159" class="LineNr">159 </span> raise << <span class="Constant">"9: unbalanced '[' for recipe</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L160"></a><span id="L160" class="LineNr">160 </span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L161"></a><span id="L161" class="LineNr">161 </span> <span class="Delimiter">}</span>
<a name="L162"></a><span id="L162" class="LineNr">162 </span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<a name="L163"></a><span id="L163" class="LineNr">163 </span><span class="Delimiter">}</span>
<a name="L164"></a><span id="L164" class="LineNr">164 </span>
<a name="L165"></a><span id="L165" class="LineNr">165 </span><span class="Comment">// can return empty string -- only if `in` has no more data</span>
<a name="L166"></a><span id="L166" class="LineNr">166 </span>string next_word<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L167"></a><span id="L167" class="LineNr">167 </span> skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L168"></a><span id="L168" class="LineNr">168 </span> <span class="Comment">// End next_word Special-cases</span>
<a name="L169"></a><span id="L169" class="LineNr">169 </span> ostringstream out<span class="Delimiter">;</span>
<a name="L170"></a><span id="L170" class="LineNr">170 </span> slurp_word<span class="Delimiter">(</span>in<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<a name="L171"></a><span id="L171" class="LineNr">171 </span> skip_whitespace_and_comments_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L172"></a><span id="L172" class="LineNr">172 </span> string result = out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<a name="L173"></a><span id="L173" class="LineNr">173 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>result != <span class="Constant">"["</span> && ends_with<span class="Delimiter">(</span>result<span class="Delimiter">,</span> <span class="Constant">'['</span><span class="Delimiter">))</span>
<a name="L174"></a><span id="L174" class="LineNr">174 </span> raise << <span class="Constant">"insert a space before '[' in '"</span> << result << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<a name="L175"></a><span id="L175" class="LineNr">175 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<a name="L176"></a><span id="L176" class="LineNr">176 </span><span class="Delimiter">}</span>
<a name="L177"></a><span id="L177" class="LineNr">177 </span>
<a name="L178"></a><span id="L178" class="LineNr">178 </span><span class="Normal">bool</span> is_label_word<span class="Delimiter">(</span><span class="Normal">const</span> string& word<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L179"></a><span id="L179" class="LineNr">179 </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>
<a name="L180"></a><span id="L180" class="LineNr">180 </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> && string<span class="Delimiter">(</span><span class="Constant">"$_*@&,=-[]()"</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>
<a name="L181"></a><span id="L181" class="LineNr">181 </span><span class="Delimiter">}</span>
<a name="L182"></a><span id="L182" class="LineNr">182 </span>
<a name="L183"></a><span id="L183" class="LineNr">183 </span><span class="Normal">bool</span> ends_with<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">,</span> <span class="Normal">const</span> <span class="Normal">char</span> c<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L184"></a><span id="L184" class="LineNr">184 </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>
<a name="L185"></a><span id="L185" class="LineNr">185 </span> <span class="Identifier">return</span> *s<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == c<span class="Delimiter">;</span>
<a name="L186"></a><span id="L186" class="LineNr">186 </span><span class="Delimiter">}</span>
<a name="L187"></a><span id="L187" class="LineNr">187 </span>
<a name="L188"></a><span id="L188" class="LineNr">188 </span><span class="Delimiter">:(before "End Globals")</span>
<a name="L189"></a><span id="L189" class="LineNr">189 </span><span class="Comment">// word boundaries</span>
<a name="L190"></a><span id="L190" class="LineNr">190 </span><span class="Normal">extern</span> <span class="Normal">const</span> string Terminators<span class="Delimiter">(</span><span class="Constant">"(){}"</span><span class="Delimiter">);</span>
<a name="L191"></a><span id="L191" class="LineNr">191 </span><span class="Delimiter">:(code)</span>
<a name="L192"></a><span id="L192" class="LineNr">192 </span><span class="Normal">void</span> slurp_word<span class="Delimiter">(</span>istream& in<span class="Delimiter">,</span> ostream& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L193"></a><span id="L193" class="LineNr">193 </span> <span class="Normal">char</span> c<span class="Delimiter">;</span>
<a name="L194"></a><span id="L194" class="LineNr">194 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">)</span> && Terminators<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>
<a name="L195"></a><span id="L195" class="LineNr">195 </span> in >> c<span class="Delimiter">;</span>
<a name="L196"></a><span id="L196" class="LineNr">196 </span> out << c<span class="Delimiter">;</span>
<a name="L197"></a><span id="L197" class="LineNr">197 </span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<a name="L198"></a><span id="L198" class="LineNr">198 </span> <span class="Delimiter">}</span>
<a name="L199"></a><span id="L199" class="LineNr">199 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>in >> c<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L200"></a><span id="L200" class="LineNr">200 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>c<span class="Delimiter">)</span> || Terminators<span class="Delimiter">.</span>find<span class="Delimiter">(</span>c<span class="Delimiter">)</span> != string::npos || Ignore<span class="Delimiter">.</span>find<span class="Delimiter">(</span>c<span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L201"></a><span id="L201" class="LineNr">201 </span> in<span class="Delimiter">.</span>putback<span class="Delimiter">(</span>c<span class="Delimiter">);</span>
<a name="L202"></a><span id="L202" class="LineNr">202 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<a name="L203"></a><span id="L203" class="LineNr">203 </span> <span class="Delimiter">}</span>
<a name="L204"></a><span id="L204" class="LineNr">204 </span> out << c<span class="Delimiter">;</span>
<a name="L205"></a><span id="L205" class="LineNr">205 </span> <span class="Delimiter">}</span>
<a name="L206"></a><span id="L206" class="LineNr">206 </span><span class="Delimiter">}</span>
<a name="L207"></a><span id="L207" class="LineNr">207 </span>
<a name="L208"></a><span id="L208" class="LineNr">208 </span><span class="Normal">void</span> skip_whitespace_and_comments<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L209"></a><span id="L209" class="LineNr">209 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L210"></a><span id="L210" class="LineNr">210 </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>
<a name="L211"></a><span id="L211" class="LineNr">211 </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>
<a name="L212"></a><span id="L212" class="LineNr">212 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>Ignore<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>
<a name="L213"></a><span id="L213" class="LineNr">213 </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> skip_comment<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L214"></a><span id="L214" class="LineNr">214 </span> <span class="Normal">else</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<a name="L215"></a><span id="L215" class="LineNr">215 </span> <span class="Delimiter">}</span>
<a name="L216"></a><span id="L216" class="LineNr">216 </span><span class="Delimiter">}</span>
<a name="L217"></a><span id="L217" class="LineNr">217 </span>
<a name="L218"></a><span id="L218" class="LineNr">218 </span><span class="Comment">// confusing; move to the next line only to skip a comment, but never otherwise</span>
<a name="L219"></a><span id="L219" class="LineNr">219 </span><span class="Normal">void</span> skip_whitespace_and_comments_but_not_newline<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L220"></a><span id="L220" class="LineNr">220 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L221"></a><span id="L221" class="LineNr">221 </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>
<a name="L222"></a><span id="L222" class="LineNr">222 </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>
<a name="L223"></a><span id="L223" class="LineNr">223 </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>
<a name="L224"></a><span id="L224" class="LineNr">224 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>Ignore<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>
<a name="L225"></a><span id="L225" class="LineNr">225 </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> skip_comment<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<a name="L226"></a><span id="L226" class="LineNr">226 </span> <span class="Normal">else</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<a name="L227"></a><span id="L227" class="LineNr">227 </span> <span class="Delimiter">}</span>
<a name="L228"></a><span id="L228" class="LineNr">228 </span><span class="Delimiter">}</span>
<a name="L229"></a><span id="L229" class="LineNr">229 </span>
<a name="L230"></a><span id="L230" class="LineNr">230 </span><span class="Normal">void</span> skip_comment<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L231"></a><span id="L231" class="LineNr">231 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">)</span> && in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'#'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L232"></a><span id="L232" class="LineNr">232 </span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<a name="L233"></a><span id="L233" class="LineNr">233 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">)</span> && 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>
<a name="L234"></a><span id="L234" class="LineNr">234 </span> <span class="Delimiter">}</span>
<a name="L235"></a><span id="L235" class="LineNr">235 </span><span class="Delimiter">}</span>
<a name="L236"></a><span id="L236" class="LineNr">236 </span>
<a name="L237"></a><span id="L237" class="LineNr">237 </span><span class="Delimiter">:(scenario recipe_instead_of_def)</span>
<a name="L238"></a><span id="L238" class="LineNr">238 </span><span class="muRecipe">recipe</span> main [
<a name="L239"></a><span id="L239" class="LineNr">239 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L240"></a><span id="L240" class="LineNr">240 </span>]
<a name="L241"></a><span id="L241" class="LineNr">241 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L242"></a><span id="L242" class="LineNr">242 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L243"></a><span id="L243" class="LineNr">243 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L244"></a><span id="L244" class="LineNr">244 </span>
<a name="L245"></a><span id="L245" class="LineNr">245 </span><span class="Delimiter">:(scenario parse_comment_outside_recipe)</span>
<a name="L246"></a><span id="L246" class="LineNr">246 </span><span class="Comment"># this comment will be dropped by the tangler, so we need a dummy recipe to stop that</span>
<a name="L247"></a><span id="L247" class="LineNr">247 </span><span class="muRecipe">def</span> f1 [
<a name="L248"></a><span id="L248" class="LineNr">248 </span>]
<a name="L249"></a><span id="L249" class="LineNr">249 </span><span class="Comment"># this comment will go through to 'load'</span>
<a name="L250"></a><span id="L250" class="LineNr">250 </span><span class="muRecipe">def</span> main [
<a name="L251"></a><span id="L251" class="LineNr">251 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L252"></a><span id="L252" class="LineNr">252 </span>]
<a name="L253"></a><span id="L253" class="LineNr">253 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L254"></a><span id="L254" class="LineNr">254 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L255"></a><span id="L255" class="LineNr">255 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L256"></a><span id="L256" class="LineNr">256 </span>
<a name="L257"></a><span id="L257" class="LineNr">257 </span><span class="Delimiter">:(scenario parse_comment_amongst_instruction)</span>
<a name="L258"></a><span id="L258" class="LineNr">258 </span><span class="muRecipe">def</span> main [
<a name="L259"></a><span id="L259" class="LineNr">259 </span> <span class="Comment"># comment</span>
<a name="L260"></a><span id="L260" class="LineNr">260 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L261"></a><span id="L261" class="LineNr">261 </span>]
<a name="L262"></a><span id="L262" class="LineNr">262 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L263"></a><span id="L263" class="LineNr">263 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L264"></a><span id="L264" class="LineNr">264 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L265"></a><span id="L265" class="LineNr">265 </span>
<a name="L266"></a><span id="L266" class="LineNr">266 </span><span class="Delimiter">:(scenario parse_comment_amongst_instruction_2)</span>
<a name="L267"></a><span id="L267" class="LineNr">267 </span><span class="muRecipe">def</span> main [
<a name="L268"></a><span id="L268" class="LineNr">268 </span> <span class="Comment"># comment</span>
<a name="L269"></a><span id="L269" class="LineNr">269 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L270"></a><span id="L270" class="LineNr">270 </span> <span class="Comment"># comment</span>
<a name="L271"></a><span id="L271" class="LineNr">271 </span>]
<a name="L272"></a><span id="L272" class="LineNr">272 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L273"></a><span id="L273" class="LineNr">273 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L274"></a><span id="L274" class="LineNr">274 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L275"></a><span id="L275" class="LineNr">275 </span>
<a name="L276"></a><span id="L276" class="LineNr">276 </span><span class="Delimiter">:(scenario parse_comment_amongst_instruction_3)</span>
<a name="L277"></a><span id="L277" class="LineNr">277 </span><span class="muRecipe">def</span> main [
<a name="L278"></a><span id="L278" class="LineNr">278 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L279"></a><span id="L279" class="LineNr">279 </span> <span class="Comment"># comment</span>
<a name="L280"></a><span id="L280" class="LineNr">280 </span> <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L281"></a><span id="L281" class="LineNr">281 </span>]
<a name="L282"></a><span id="L282" class="LineNr">282 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L283"></a><span id="L283" class="LineNr">283 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L284"></a><span id="L284" class="LineNr">284 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L285"></a><span id="L285" class="LineNr">285 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L286"></a><span id="L286" class="LineNr">286 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L287"></a><span id="L287" class="LineNr">287 </span><span class="traceContains">+parse: product: {2: "number"}</span>
<a name="L288"></a><span id="L288" class="LineNr">288 </span>
<a name="L289"></a><span id="L289" class="LineNr">289 </span><span class="Delimiter">:(scenario parse_comment_after_instruction)</span>
<a name="L290"></a><span id="L290" class="LineNr">290 </span><span class="muRecipe">def</span> main [
<a name="L291"></a><span id="L291" class="LineNr">291 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span> <span class="Comment"># comment</span>
<a name="L292"></a><span id="L292" class="LineNr">292 </span>]
<a name="L293"></a><span id="L293" class="LineNr">293 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L294"></a><span id="L294" class="LineNr">294 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L295"></a><span id="L295" class="LineNr">295 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L296"></a><span id="L296" class="LineNr">296 </span>
<a name="L297"></a><span id="L297" class="LineNr">297 </span><span class="Delimiter">:(scenario parse_label)</span>
<a name="L298"></a><span id="L298" class="LineNr">298 </span><span class="muRecipe">def</span> main [
<a name="L299"></a><span id="L299" class="LineNr">299 </span> +foo
<a name="L300"></a><span id="L300" class="LineNr">300 </span>]
<a name="L301"></a><span id="L301" class="LineNr">301 </span><span class="traceContains">+parse: label: +foo</span>
<a name="L302"></a><span id="L302" class="LineNr">302 </span>
<a name="L303"></a><span id="L303" class="LineNr">303 </span><span class="Delimiter">:(scenario parse_dollar_as_recipe_name)</span>
<a name="L304"></a><span id="L304" class="LineNr">304 </span><span class="muRecipe">def</span> main [
<a name="L305"></a><span id="L305" class="LineNr">305 </span> $foo
<a name="L306"></a><span id="L306" class="LineNr">306 </span>]
<a name="L307"></a><span id="L307" class="LineNr">307 </span><span class="traceContains">+parse: instruction: $foo</span>
<a name="L308"></a><span id="L308" class="LineNr">308 </span>
<a name="L309"></a><span id="L309" class="LineNr">309 </span><span class="Delimiter">:(scenario parse_multiple_properties)</span>
<a name="L310"></a><span id="L310" class="LineNr">310 </span><span class="muRecipe">def</span> main [
<a name="L311"></a><span id="L311" class="LineNr">311 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>/foo:bar:baz
<a name="L312"></a><span id="L312" class="LineNr">312 </span>]
<a name="L313"></a><span id="L313" class="LineNr">313 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L314"></a><span id="L314" class="LineNr">314 </span><span class="traceContains">+parse: ingredient: {23: "literal", "foo": ("bar" "baz")}</span>
<a name="L315"></a><span id="L315" class="LineNr">315 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L316"></a><span id="L316" class="LineNr">316 </span>
<a name="L317"></a><span id="L317" class="LineNr">317 </span><span class="Delimiter">:(scenario parse_multiple_products)</span>
<a name="L318"></a><span id="L318" class="LineNr">318 </span><span class="muRecipe">def</span> main [
<a name="L319"></a><span id="L319" class="LineNr">319 </span> <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L320"></a><span id="L320" class="LineNr">320 </span>]
<a name="L321"></a><span id="L321" class="LineNr">321 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L322"></a><span id="L322" class="LineNr">322 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L323"></a><span id="L323" class="LineNr">323 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L324"></a><span id="L324" class="LineNr">324 </span><span class="traceContains">+parse: product: {2: "number"}</span>
<a name="L325"></a><span id="L325" class="LineNr">325 </span>
<a name="L326"></a><span id="L326" class="LineNr">326 </span><span class="Delimiter">:(scenario parse_multiple_ingredients)</span>
<a name="L327"></a><span id="L327" class="LineNr">327 </span><span class="muRecipe">def</span> main [
<a name="L328"></a><span id="L328" class="LineNr">328 </span> <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span><span class="Delimiter">,</span> <span class="Constant">4</span>:number
<a name="L329"></a><span id="L329" class="LineNr">329 </span>]
<a name="L330"></a><span id="L330" class="LineNr">330 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L331"></a><span id="L331" class="LineNr">331 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L332"></a><span id="L332" class="LineNr">332 </span><span class="traceContains">+parse: ingredient: {4: "number"}</span>
<a name="L333"></a><span id="L333" class="LineNr">333 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L334"></a><span id="L334" class="LineNr">334 </span><span class="traceContains">+parse: product: {2: "number"}</span>
<a name="L335"></a><span id="L335" class="LineNr">335 </span>
<a name="L336"></a><span id="L336" class="LineNr">336 </span><span class="Delimiter">:(scenario parse_multiple_types)</span>
<a name="L337"></a><span id="L337" class="LineNr">337 </span><span class="muRecipe">def</span> main [
<a name="L338"></a><span id="L338" class="LineNr">338 </span> <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:address:number<span class="Special"> <- </span>copy <span class="Constant">23</span><span class="Delimiter">,</span> <span class="Constant">4</span>:number
<a name="L339"></a><span id="L339" class="LineNr">339 </span>]
<a name="L340"></a><span id="L340" class="LineNr">340 </span><span class="traceContains">+parse: instruction: copy</span>
<a name="L341"></a><span id="L341" class="LineNr">341 </span><span class="traceContains">+parse: ingredient: {23: "literal"}</span>
<a name="L342"></a><span id="L342" class="LineNr">342 </span><span class="traceContains">+parse: ingredient: {4: "number"}</span>
<a name="L343"></a><span id="L343" class="LineNr">343 </span><span class="traceContains">+parse: product: {1: "number"}</span>
<a name="L344"></a><span id="L344" class="LineNr">344 </span><span class="traceContains">+parse: product: {2: ("address" "number")}</span>
<a name="L345"></a><span id="L345" class="LineNr">345 </span>
<a name="L346"></a><span id="L346" class="LineNr">346 </span><span class="Delimiter">:(scenario parse_properties)</span>
<a name="L347"></a><span id="L347" class="LineNr">347 </span><span class="muRecipe">def</span> main [
<a name="L348"></a><span id="L348" class="LineNr">348 </span> <span class="Constant">1</span>:address:number/lookup<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L349"></a><span id="L349" class="LineNr">349 </span>]
<a name="L350"></a><span id="L350" class="LineNr">350 </span><span class="traceContains">+parse: product: {1: ("address" "number"), "lookup": ()}</span>
<a name="L351"></a><span id="L351" class="LineNr">351 </span>
<a name="L352"></a><span id="L352" class="LineNr">352 </span><span class="Comment">//: this test we can't represent with a scenario</span>
<a name="L353"></a><span id="L353" class="LineNr">353 </span><span class="Delimiter">:(code)</span>
<a name="L354"></a><span id="L354" class="LineNr">354 </span><span class="Normal">void</span> test_parse_comment_terminated_by_eof<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<a name="L355"></a><span id="L355" class="LineNr">355 </span> load<span class="Delimiter">(</span><span class="Constant">"recipe main [</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<a name="L356"></a><span id="L356" class="LineNr">356 </span> <span class="Constant">" a:number <- copy 34</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<a name="L357"></a><span id="L357" class="LineNr">357 </span> <span class="Constant">"]</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<a name="L358"></a><span id="L358" class="LineNr">358 </span> <span class="Constant">"# abc"</span><span class="Delimiter">);</span> <span class="Comment">// no newline after comment</span>
<a name="L359"></a><span id="L359" class="LineNr">359 </span> cerr << <span class="Constant">"."</span><span class="Delimiter">;</span> <span class="Comment">// termination = success</span>
<a name="L360"></a><span id="L360" class="LineNr">360 </span><span class="Delimiter">}</span>
<a name="L361"></a><span id="L361" class="LineNr">361 </span>
<a name="L362"></a><span id="L362" class="LineNr">362 </span><span class="Delimiter">:(scenario warn_on_missing_space_before_bracket)</span>
<a name="L363"></a><span id="L363" class="LineNr">363 </span><span class="Special">% Hide_errors = true;</span>
<a name="L364"></a><span id="L364" class="LineNr">364 </span><span class="muRecipe">def</span> main[
<a name="L365"></a><span id="L365" class="LineNr">365 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L366"></a><span id="L366" class="LineNr">366 </span>]
<a name="L367"></a><span id="L367" class="LineNr">367 </span><span class="traceContains">+error: insert a space before '[' in 'main['</span>
<a name="L368"></a><span id="L368" class="LineNr">368 </span>
<a name="L369"></a><span id="L369" class="LineNr">369 </span><span class="Comment">//: Warn if a recipe gets redefined, because large codebases can accidentally</span>
<a name="L370"></a><span id="L370" class="LineNr">370 </span><span class="Comment">//: step on their own toes. But there'll be many occasions later where</span>
<a name="L371"></a><span id="L371" class="LineNr">371 </span><span class="Comment">//: we'll want to disable the errors.</span>
<a name="L372"></a><span id="L372" class="LineNr">372 </span><span class="Delimiter">:(before "End Globals")</span>
<a name="L373"></a><span id="L373" class="LineNr">373 </span><span class="Normal">bool</span> Disable_redefine_checks = <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L374"></a><span id="L374" class="LineNr">374 </span><span class="Delimiter">:(before "End Setup")</span>
<a name="L375"></a><span id="L375" class="LineNr">375 </span>Disable_redefine_checks = <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L376"></a><span id="L376" class="LineNr">376 </span><span class="Delimiter">:(code)</span>
<a name="L377"></a><span id="L377" class="LineNr">377 </span><span class="Normal">bool</span> should_check_for_redefine<span class="Delimiter">(</span><span class="Normal">const</span> string& recipe_name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L378"></a><span id="L378" class="LineNr">378 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Disable_redefine_checks<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<a name="L379"></a><span id="L379" class="LineNr">379 </span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<a name="L380"></a><span id="L380" class="LineNr">380 </span><span class="Delimiter">}</span>
<a name="L381"></a><span id="L381" class="LineNr">381 </span>
<a name="L382"></a><span id="L382" class="LineNr">382 </span><span class="Delimiter">:(scenario forbid_redefining_recipes)</span>
<a name="L383"></a><span id="L383" class="LineNr">383 </span><span class="Special">% Hide_errors = true;</span>
<a name="L384"></a><span id="L384" class="LineNr">384 </span><span class="muRecipe">def</span> main [
<a name="L385"></a><span id="L385" class="LineNr">385 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L386"></a><span id="L386" class="LineNr">386 </span>]
<a name="L387"></a><span id="L387" class="LineNr">387 </span><span class="muRecipe">def</span> main [
<a name="L388"></a><span id="L388" class="LineNr">388 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">24</span>
<a name="L389"></a><span id="L389" class="LineNr">389 </span>]
<a name="L390"></a><span id="L390" class="LineNr">390 </span><span class="traceContains">+error: redefining recipe main</span>
<a name="L391"></a><span id="L391" class="LineNr">391 </span>
<a name="L392"></a><span id="L392" class="LineNr">392 </span><span class="Delimiter">:(scenario permit_forcibly_redefining_recipes)</span>
<a name="L393"></a><span id="L393" class="LineNr">393 </span><span class="muRecipe">def</span> main [
<a name="L394"></a><span id="L394" class="LineNr">394 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<a name="L395"></a><span id="L395" class="LineNr">395 </span>]
<a name="L396"></a><span id="L396" class="LineNr">396 </span><span class="muRecipe">def</span>! main [
<a name="L397"></a><span id="L397" class="LineNr">397 </span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">24</span>
<a name="L398"></a><span id="L398" class="LineNr">398 </span>]
<a name="L399"></a><span id="L399" class="LineNr">399 </span><span class="traceAbsent">-error: redefining recipe main</span>
<a name="L400"></a><span id="L400" class="LineNr">400 </span>$error: <span class="Constant">0</span>
<a name="L401"></a><span id="L401" class="LineNr">401 </span>
<a name="L402"></a><span id="L402" class="LineNr">402 </span><span class="Delimiter">:(code)</span>
<a name="L403"></a><span id="L403" class="LineNr">403 </span><span class="Comment">// for debugging</span>
<a name="L404"></a><span id="L404" class="LineNr">404 </span><span class="Normal">void</span> show_rest_of_stream<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<a name="L405"></a><span id="L405" class="LineNr">405 </span> cerr << <span class="Constant">'^'</span><span class="Delimiter">;</span>
<a name="L406"></a><span id="L406" class="LineNr">406 </span> <span class="Normal">char</span> c<span class="Delimiter">;</span>
<a name="L407"></a><span id="L407" class="LineNr">407 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>in >> c<span class="Delimiter">)</span>
<a name="L408"></a><span id="L408" class="LineNr">408 </span> cerr << c<span class="Delimiter">;</span>
<a name="L409"></a><span id="L409" class="LineNr">409 </span> cerr << <span class="Constant">"$</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="Delimiter">;</span>
<a name="L410"></a><span id="L410" class="LineNr">410 </span> exit<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<a name="L411"></a><span id="L411" class="LineNr">411 </span><span class="Delimiter">}</span>
</pre>
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