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<title>Mu - 080display.cc</title>
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<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Take raw control of the text-mode display and console, putting it in</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: 'console' mode rather than the usual automatically-scrolling 'typewriter'</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: mode.</span>
<span id="L4" class="LineNr"> 4 </span>
<span id="L5" class="LineNr"> 5 </span><span class="SalientComment">//:: Display management</span>
<span id="L6" class="LineNr"> 6 </span>
<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L8" class="LineNr"> 8 </span><span class="Normal">int</span> Display_row = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L9" class="LineNr"> 9 </span><span class="Normal">int</span> Display_column = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L10" class="LineNr"> 10 </span>
<span id="L11" class="LineNr"> 11 </span><span class="Delimiter">:(before "End Includes")</span>
<span id="L12" class="LineNr"> 12 </span><span class="PreProc">#define CHECK_SCREEN \</span>
<span id="L13" class="LineNr"> 13 </span><span class="PreProc"> </span><span class="Normal">if</span><span class="PreProc"> (!tb_is_active()) </span><span class="Delimiter">{</span><span class="PreProc"> \</span>
<span id="L14" class="LineNr"> 14 </span><span class="PreProc"> </span><span class="Normal">if</span><span class="PreProc"> (Run_tests) \</span>
<span id="L15" class="LineNr"> 15 </span><span class="PreProc"> <a href='003trace.cc.html#L174'>raise</a> << maybe(current_recipe_name()) << </span><span class="Constant">"tried to print to real screen in a test!</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="PreProc"> << end()</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span id="L16" class="LineNr"> 16 </span><span class="PreProc"> </span><span class="Normal">else</span><span class="PreProc"> \</span>
<span id="L17" class="LineNr"> 17 </span><span class="PreProc"> <a href='003trace.cc.html#L174'>raise</a> << maybe(current_recipe_name()) << </span><span class="Constant">"tried to print to real screen before 'open-console' or after 'close-console'</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="PreProc"> << end()</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span id="L18" class="LineNr"> 18 </span><span class="PreProc"> </span><span class="Identifier">break</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span id="L19" class="LineNr"> 19 </span><span class="PreProc"> </span><span class="Delimiter">}</span>
<span id="L20" class="LineNr"> 20 </span><span class="PreProc">#define CHECK_CONSOLE \</span>
<span id="L21" class="LineNr"> 21 </span><span class="PreProc"> </span><span class="Normal">if</span><span class="PreProc"> (!tb_is_active()) </span><span class="Delimiter">{</span><span class="PreProc"> \</span>
<span id="L22" class="LineNr"> 22 </span><span class="PreProc"> </span><span class="Normal">if</span><span class="PreProc"> (Run_tests) \</span>
<span id="L23" class="LineNr"> 23 </span><span class="PreProc"> <a href='003trace.cc.html#L174'>raise</a> << maybe(current_recipe_name()) << </span><span class="Constant">"tried to read event from real keyboard/mouse in a test!</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="PreProc"> << end()</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span id="L24" class="LineNr"> 24 </span><span class="PreProc"> </span><span class="Normal">else</span><span class="PreProc"> \</span>
<span id="L25" class="LineNr"> 25 </span><span class="PreProc"> <a href='003trace.cc.html#L174'>raise</a> << maybe(current_recipe_name()) << </span><span class="Constant">"tried to read event from real keyboard/mouse before 'open-console' or after 'close-console'</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="PreProc"> << end()</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span id="L26" class="LineNr"> 26 </span><span class="PreProc"> </span><span class="Identifier">break</span><span class="Delimiter">;</span><span class="PreProc"> \</span>
<span id="L27" class="LineNr"> 27 </span><span class="PreProc"> </span><span class="Delimiter">}</span>
<span id="L28" class="LineNr"> 28 </span>
<span id="L29" class="LineNr"> 29 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L30" class="LineNr"> 30 </span>OPEN_CONSOLE<span class="Delimiter">,</span>
<span id="L31" class="LineNr"> 31 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L32" class="LineNr"> 32 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"open-console"</span><span class="Delimiter">,</span> OPEN_CONSOLE<span class="Delimiter">);</span>
<span id="L33" class="LineNr"> 33 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L34" class="LineNr"> 34 </span><span class="Normal">case</span> OPEN_CONSOLE: <span class="Delimiter">{</span>
<span id="L35" class="LineNr"> 35 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L36" class="LineNr"> 36 </span><span class="Delimiter">}</span>
<span id="L37" class="LineNr"> 37 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L38" class="LineNr"> 38 </span><span class="Normal">case</span> OPEN_CONSOLE: <span class="Delimiter">{</span>
<span id="L39" class="LineNr"> 39 </span> tb_init<span class="Delimiter">();</span>
<span id="L40" class="LineNr"> 40 </span> std::setvbuf<span class="Delimiter">(</span><span class="Constant">stdout</span><span class="Delimiter">,</span> <span class="Constant">NULL</span><span class="Delimiter">,</span> <span class="Constant">_IONBF</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span> <span class="Comment">// disable buffering in cout</span>
<span id="L41" class="LineNr"> 41 </span> Display_row = Display_column = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L42" class="LineNr"> 42 </span> <span class="Normal">int</span> width = tb_width<span class="Delimiter">();</span>
<span id="L43" class="LineNr"> 43 </span> <span class="Normal">int</span> height = tb_height<span class="Delimiter">();</span>
<span id="L44" class="LineNr"> 44 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>width > <span class="Constant">222</span> || height > <span class="Constant">222</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L45" class="LineNr"> 45 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>width > <span class="Constant">222</span><span class="Delimiter">)</span>
<span id="L46" class="LineNr"> 46 </span> <a href='003trace.cc.html#L174'>raise</a> << <span class="Constant">"sorry, Mu doesn't support windows wider than 222 characters in console mode. Please resize your window.</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L47" class="LineNr"> 47 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>height > <span class="Constant">222</span><span class="Delimiter">)</span>
<span id="L48" class="LineNr"> 48 </span> <a href='003trace.cc.html#L174'>raise</a> << <span class="Constant">"sorry, Mu doesn't support windows taller than 222 characters in console mode. Please resize your window.</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span id="L49" class="LineNr"> 49 </span> exit<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L50" class="LineNr"> 50 </span> <span class="Delimiter">}</span>
<span id="L51" class="LineNr"> 51 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L52" class="LineNr"> 52 </span><span class="Delimiter">}</span>
<span id="L53" class="LineNr"> 53 </span>
<span id="L54" class="LineNr"> 54 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L55" class="LineNr"> 55 </span>CLOSE_CONSOLE<span class="Delimiter">,</span>
<span id="L56" class="LineNr"> 56 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L57" class="LineNr"> 57 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"close-console"</span><span class="Delimiter">,</span> CLOSE_CONSOLE<span class="Delimiter">);</span>
<span id="L58" class="LineNr"> 58 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L59" class="LineNr"> 59 </span><span class="Normal">case</span> CLOSE_CONSOLE: <span class="Delimiter">{</span>
<span id="L60" class="LineNr"> 60 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L61" class="LineNr"> 61 </span><span class="Delimiter">}</span>
<span id="L62" class="LineNr"> 62 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L63" class="LineNr"> 63 </span><span class="Normal">case</span> CLOSE_CONSOLE: <span class="Delimiter">{</span>
<span id="L64" class="LineNr"> 64 </span> tb_shutdown<span class="Delimiter">();</span>
<span id="L65" class="LineNr"> 65 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L66" class="LineNr"> 66 </span><span class="Delimiter">}</span>
<span id="L67" class="LineNr"> 67 </span>
<span id="L68" class="LineNr"> 68 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L69" class="LineNr"> 69 </span>CLEAR_DISPLAY<span class="Delimiter">,</span>
<span id="L70" class="LineNr"> 70 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L71" class="LineNr"> 71 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"clear-display"</span><span class="Delimiter">,</span> CLEAR_DISPLAY<span class="Delimiter">);</span>
<span id="L72" class="LineNr"> 72 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L73" class="LineNr"> 73 </span><span class="Normal">case</span> CLEAR_DISPLAY: <span class="Delimiter">{</span>
<span id="L74" class="LineNr"> 74 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L75" class="LineNr"> 75 </span><span class="Delimiter">}</span>
<span id="L76" class="LineNr"> 76 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L77" class="LineNr"> 77 </span><span class="Normal">case</span> CLEAR_DISPLAY: <span class="Delimiter">{</span>
<span id="L78" class="LineNr"> 78 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L79" class="LineNr"> 79 </span> tb_clear<span class="Delimiter">();</span>
<span id="L80" class="LineNr"> 80 </span> Display_row = Display_column = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L81" class="LineNr"> 81 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L82" class="LineNr"> 82 </span><span class="Delimiter">}</span>
<span id="L83" class="LineNr"> 83 </span>
<span id="L84" class="LineNr"> 84 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L85" class="LineNr"> 85 </span>PRINT_CHARACTER_TO_DISPLAY<span class="Delimiter">,</span>
<span id="L86" class="LineNr"> 86 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L87" class="LineNr"> 87 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"print-character-to-display"</span><span class="Delimiter">,</span> PRINT_CHARACTER_TO_DISPLAY<span class="Delimiter">);</span>
<span id="L88" class="LineNr"> 88 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L89" class="LineNr"> 89 </span><span class="Normal">case</span> PRINT_CHARACTER_TO_DISPLAY: <span class="Delimiter">{</span>
<span id="L90" class="LineNr"> 90 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L91" class="LineNr"> 91 </span> <a href='003trace.cc.html#L174'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'print-character-to-display' requires at least one ingredient, but got '"</span> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L93" class="LineNr"> 93 </span> <span class="Delimiter">}</span>
<span id="L94" class="LineNr"> 94 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L95" class="LineNr"> 95 </span> <a href='003trace.cc.html#L174'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'print-character-to-display' should be a character, but got '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
<span id="L96" class="LineNr"> 96 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L97" class="LineNr"> 97 </span> <span class="Delimiter">}</span>
<span id="L98" class="LineNr"> 98 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> > <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L99" class="LineNr"> 99 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L100" class="LineNr">100 </span> <a href='003trace.cc.html#L174'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"second ingredient of 'print-character-to-display' should be a foreground color number, but got '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
<span id="L101" class="LineNr">101 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L102" class="LineNr">102 </span> <span class="Delimiter">}</span>
<span id="L103" class="LineNr">103 </span> <span class="Delimiter">}</span>
<span id="L104" class="LineNr">104 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> > <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L105" class="LineNr">105 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L106" class="LineNr">106 </span> <a href='003trace.cc.html#L174'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"third ingredient of 'print-character-to-display' should be a background color number, but got '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">).</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
<span id="L107" class="LineNr">107 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L108" class="LineNr">108 </span> <span class="Delimiter">}</span>
<span id="L109" class="LineNr">109 </span> <span class="Delimiter">}</span>
<span id="L110" class="LineNr">110 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L111" class="LineNr">111 </span><span class="Delimiter">}</span>
<span id="L112" class="LineNr">112 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L113" class="LineNr">113 </span><span class="Normal">case</span> PRINT_CHARACTER_TO_DISPLAY: <span class="Delimiter">{</span>
<span id="L114" class="LineNr">114 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L115" class="LineNr">115 </span> <span class="Normal">int</span> h=tb_height<span class="Delimiter">(),</span> w=tb_width<span class="Delimiter">();</span>
<span id="L116" class="LineNr">116 </span> <span class="Normal">int</span> height = <span class="Delimiter">(</span>h >= <span class="Constant">0</span><span class="Delimiter">)</span> ? h : <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L117" class="LineNr">117 </span> <span class="Normal">int</span> width = <span class="Delimiter">(</span>w >= <span class="Constant">0</span><span class="Delimiter">)</span> ? w : <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L118" class="LineNr">118 </span> <span class="Normal">int</span> c = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L119" class="LineNr">119 </span> <span class="Normal">int</span> color = TB_WHITE<span class="Delimiter">;</span>
<span id="L120" class="LineNr">120 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>ingredients<span class="Delimiter">)</span> > <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L121" class="LineNr">121 </span> color = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L122" class="LineNr">122 </span> <span class="Delimiter">}</span>
<span id="L123" class="LineNr">123 </span> <span class="Normal">int</span> bg_color = TB_BLACK<span class="Delimiter">;</span>
<span id="L124" class="LineNr">124 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>ingredients<span class="Delimiter">)</span> > <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L125" class="LineNr">125 </span> bg_color = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L126" class="LineNr">126 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>bg_color == <span class="Constant">0</span><span class="Delimiter">)</span> bg_color = TB_BLACK<span class="Delimiter">;</span>
<span id="L127" class="LineNr">127 </span> <span class="Delimiter">}</span>
<span id="L128" class="LineNr">128 </span> tb_print<span class="Delimiter">(</span>c<span class="Delimiter">,</span> color<span class="Delimiter">,</span> bg_color<span class="Delimiter">);</span>
<span id="L129" class="LineNr">129 </span> <span class="Comment">// track row and column, mimicking what happens on screen</span>
<span id="L130" class="LineNr">130 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L131" class="LineNr">131 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_row < height-<span class="Constant">1</span><span class="Delimiter">)</span> ++Display_row<span class="Delimiter">;</span> <span class="Comment">// otherwise we scroll and Display_row remains unchanged</span>
<span id="L132" class="LineNr">132 </span> <span class="Delimiter">}</span>
<span id="L133" class="LineNr">133 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="cSpecial">'\r'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L134" class="LineNr">134 </span> Display_column = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L135" class="LineNr">135 </span> <span class="Delimiter">}</span>
<span id="L136" class="LineNr">136 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="cSpecial">'\b'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L137" class="LineNr">137 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_column > <span class="Constant">0</span><span class="Delimiter">)</span> --Display_column<span class="Delimiter">;</span>
<span id="L138" class="LineNr">138 </span> <span class="Delimiter">}</span>
<span id="L139" class="LineNr">139 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L140" class="LineNr">140 </span> ++Display_column<span class="Delimiter">;</span>
<span id="L141" class="LineNr">141 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_column >= width<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L142" class="LineNr">142 </span> Display_column = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L143" class="LineNr">143 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_row < height-<span class="Constant">1</span><span class="Delimiter">)</span> ++Display_row<span class="Delimiter">;</span>
<span id="L144" class="LineNr">144 </span> <span class="Delimiter">}</span>
<span id="L145" class="LineNr">145 </span> <span class="Delimiter">}</span>
<span id="L146" class="LineNr">146 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L147" class="LineNr">147 </span><span class="Delimiter">}</span>
<span id="L148" class="LineNr">148 </span>
<span id="L149" class="LineNr">149 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L150" class="LineNr">150 </span>CURSOR_POSITION_ON_DISPLAY<span class="Delimiter">,</span>
<span id="L151" class="LineNr">151 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L152" class="LineNr">152 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"cursor-position-on-display"</span><span class="Delimiter">,</span> CURSOR_POSITION_ON_DISPLAY<span class="Delimiter">);</span>
<span id="L153" class="LineNr">153 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L154" class="LineNr">154 </span><span class="Normal">case</span> CURSOR_POSITION_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L155" class="LineNr">155 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L156" class="LineNr">156 </span><span class="Delimiter">}</span>
<span id="L157" class="LineNr">157 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L158" class="LineNr">158 </span><span class="Normal">case</span> CURSOR_POSITION_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L159" class="LineNr">159 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L160" class="LineNr">160 </span> products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L161" class="LineNr">161 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>Display_row<span class="Delimiter">);</span>
<span id="L162" class="LineNr">162 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>Display_column<span class="Delimiter">);</span>
<span id="L163" class="LineNr">163 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L164" class="LineNr">164 </span><span class="Delimiter">}</span>
<span id="L165" class="LineNr">165 </span>
<span id="L166" class="LineNr">166 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L167" class="LineNr">167 </span>MOVE_CURSOR_ON_DISPLAY<span class="Delimiter">,</span>
<span id="L168" class="LineNr">168 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L169" class="LineNr">169 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"move-cursor-on-display"</span><span class="Delimiter">,</span> MOVE_CURSOR_ON_DISPLAY<span class="Delimiter">);</span>
<span id="L170" class="LineNr">170 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L171" class="LineNr">171 </span><span class="Normal">case</span> MOVE_CURSOR_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L172" class="LineNr">172 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L173" class="LineNr">173 </span> <a href='003trace.cc.html#L174'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'move-cursor-on-display' requires two ingredients, but got '"</span> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
<span id="L174" class="LineNr">174 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L175" class="LineNr">175 </span> <span class="Delimiter">}</span>
<span id="L176" class="LineNr">176 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L177" class="LineNr">177 </span> <a href='003trace.cc.html#L174'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'move-cursor-on-display' should be a row number, but got '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
<span id="L178" class="LineNr">178 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L179" class="LineNr">179 </span> <span class="Delimiter">}</span>
<span id="L180" class="LineNr">180 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
<span id="L181" class="LineNr">181 </span> <a href='003trace.cc.html#L174'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"second ingredient of 'move-cursor-on-display' should be a column number, but got '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L203'>end</a><span class="Delimiter">();</span>
<span id="L182" class="LineNr">182 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L183" class="LineNr">183 </span> <span class="Delimiter">}</span>
<span id="L184" class="LineNr">184 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L185" class="LineNr">185 </span><span class="Delimiter">}</span>
<span id="L186" class="LineNr">186 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L187" class="LineNr">187 </span><span class="Normal">case</span> MOVE_CURSOR_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L188" class="LineNr">188 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L189" class="LineNr">189 </span> Display_row = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L190" class="LineNr">190 </span> Display_column = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L191" class="LineNr">191 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L192" class="LineNr">192 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L193" class="LineNr">193 </span><span class="Delimiter">}</span>
<span id="L194" class="LineNr">194 </span>
<span id="L195" class="LineNr">195 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L196" class="LineNr">196 </span>MOVE_CURSOR_DOWN_ON_DISPLAY<span class="Delimiter">,</span>
<span id="L197" class="LineNr">197 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L198" class="LineNr">198 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"move-cursor-down-on-display"</span><span class="Delimiter">,</span> MOVE_CURSOR_DOWN_ON_DISPLAY<span class="Delimiter">);</span>
<span id="L199" class="LineNr">199 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L200" class="LineNr">200 </span><span class="Normal">case</span> MOVE_CURSOR_DOWN_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L201" class="LineNr">201 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L202" class="LineNr">202 </span><span class="Delimiter">}</span>
<span id="L203" class="LineNr">203 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L204" class="LineNr">204 </span><span class="Normal">case</span> MOVE_CURSOR_DOWN_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L205" class="LineNr">205 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L206" class="LineNr">206 </span> <span class="Normal">int</span> h=tb_height<span class="Delimiter">();</span>
<span id="L207" class="LineNr">207 </span> <span class="Normal">int</span> height = <span class="Delimiter">(</span>h >= <span class="Constant">0</span><span class="Delimiter">)</span> ? h : <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L208" class="LineNr">208 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_row < height-<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L209" class="LineNr">209 </span> ++Display_row<span class="Delimiter">;</span>
<span id="L210" class="LineNr">210 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L211" class="LineNr">211 </span> <span class="Delimiter">}</span>
<span id="L212" class="LineNr">212 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L213" class="LineNr">213 </span><span class="Delimiter">}</span>
<span id="L214" class="LineNr">214 </span>
<span id="L215" class="LineNr">215 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L216" class="LineNr">216 </span>MOVE_CURSOR_UP_ON_DISPLAY<span class="Delimiter">,</span>
<span id="L217" class="LineNr">217 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L218" class="LineNr">218 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"move-cursor-up-on-display"</span><span class="Delimiter">,</span> MOVE_CURSOR_UP_ON_DISPLAY<span class="Delimiter">);</span>
<span id="L219" class="LineNr">219 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L220" class="LineNr">220 </span><span class="Normal">case</span> MOVE_CURSOR_UP_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L221" class="LineNr">221 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L222" class="LineNr">222 </span><span class="Delimiter">}</span>
<span id="L223" class="LineNr">223 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L224" class="LineNr">224 </span><span class="Normal">case</span> MOVE_CURSOR_UP_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L225" class="LineNr">225 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L226" class="LineNr">226 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_row > <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L227" class="LineNr">227 </span> --Display_row<span class="Delimiter">;</span>
<span id="L228" class="LineNr">228 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L229" class="LineNr">229 </span> <span class="Delimiter">}</span>
<span id="L230" class="LineNr">230 </span> <span class="Identifier">break</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="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L234" class="LineNr">234 </span>MOVE_CURSOR_RIGHT_ON_DISPLAY<span class="Delimiter">,</span>
<span id="L235" class="LineNr">235 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L236" class="LineNr">236 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"move-cursor-right-on-display"</span><span class="Delimiter">,</span> MOVE_CURSOR_RIGHT_ON_DISPLAY<span class="Delimiter">);</span>
<span id="L237" class="LineNr">237 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L238" class="LineNr">238 </span><span class="Normal">case</span> MOVE_CURSOR_RIGHT_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L239" class="LineNr">239 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L240" class="LineNr">240 </span><span class="Delimiter">}</span>
<span id="L241" class="LineNr">241 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L242" class="LineNr">242 </span><span class="Normal">case</span> MOVE_CURSOR_RIGHT_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L243" class="LineNr">243 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L244" class="LineNr">244 </span> <span class="Normal">int</span> w=tb_width<span class="Delimiter">();</span>
<span id="L245" class="LineNr">245 </span> <span class="Normal">int</span> width = <span class="Delimiter">(</span>w >= <span class="Constant">0</span><span class="Delimiter">)</span> ? w : <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L246" class="LineNr">246 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_column < width-<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L247" class="LineNr">247 </span> ++Display_column<span class="Delimiter">;</span>
<span id="L248" class="LineNr">248 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L249" class="LineNr">249 </span> <span class="Delimiter">}</span>
<span id="L250" class="LineNr">250 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L251" class="LineNr">251 </span><span class="Delimiter">}</span>
<span id="L252" class="LineNr">252 </span>
<span id="L253" class="LineNr">253 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L254" class="LineNr">254 </span>MOVE_CURSOR_LEFT_ON_DISPLAY<span class="Delimiter">,</span>
<span id="L255" class="LineNr">255 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L256" class="LineNr">256 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"move-cursor-left-on-display"</span><span class="Delimiter">,</span> MOVE_CURSOR_LEFT_ON_DISPLAY<span class="Delimiter">);</span>
<span id="L257" class="LineNr">257 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L258" class="LineNr">258 </span><span class="Normal">case</span> MOVE_CURSOR_LEFT_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L259" class="LineNr">259 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L260" class="LineNr">260 </span><span class="Delimiter">}</span>
<span id="L261" class="LineNr">261 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L262" class="LineNr">262 </span><span class="Normal">case</span> MOVE_CURSOR_LEFT_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L263" class="LineNr">263 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L264" class="LineNr">264 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_column > <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L265" class="LineNr">265 </span> --Display_column<span class="Delimiter">;</span>
<span id="L266" class="LineNr">266 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L267" class="LineNr">267 </span> <span class="Delimiter">}</span>
<span id="L268" class="LineNr">268 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L269" class="LineNr">269 </span><span class="Delimiter">}</span>
<span id="L270" class="LineNr">270 </span>
<span id="L271" class="LineNr">271 </span><span class="Comment">//: as a convenience, make $print mostly work in console mode</span>
<span id="L272" class="LineNr">272 </span><span class="Delimiter">:(before "End $print 10/newline Special-cases")</span>
<span id="L273" class="LineNr">273 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>tb_is_active<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L274" class="LineNr">274 </span> <a href='080display.cc.html#L277'>move_cursor_to_start_of_next_line_on_display</a><span class="Delimiter">();</span>
<span id="L275" class="LineNr">275 </span><span class="Delimiter">}</span>
<span id="L276" class="LineNr">276 </span><span class="Delimiter">:(code)</span>
<span id="L277" class="LineNr">277 </span><span class="Normal">void</span> <a href='080display.cc.html#L277'>move_cursor_to_start_of_next_line_on_display</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L278" class="LineNr">278 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>Display_row < tb_height<span class="Delimiter">()</span>-<span class="Constant">1</span><span class="Delimiter">)</span> ++Display_row<span class="Delimiter">;</span>
<span id="L279" class="LineNr">279 </span> <span class="Normal">else</span> Display_row = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L280" class="LineNr">280 </span> Display_column = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L281" class="LineNr">281 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L282" class="LineNr">282 </span><span class="Delimiter">}</span>
<span id="L283" class="LineNr">283 </span>
<span id="L284" class="LineNr">284 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L285" class="LineNr">285 </span>DISPLAY_WIDTH<span class="Delimiter">,</span>
<span id="L286" class="LineNr">286 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L287" class="LineNr">287 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"display-width"</span><span class="Delimiter">,</span> DISPLAY_WIDTH<span class="Delimiter">);</span>
<span id="L288" class="LineNr">288 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L289" class="LineNr">289 </span><span class="Normal">case</span> DISPLAY_WIDTH: <span class="Delimiter">{</span>
<span id="L290" class="LineNr">290 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L291" class="LineNr">291 </span><span class="Delimiter">}</span>
<span id="L292" class="LineNr">292 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L293" class="LineNr">293 </span><span class="Normal">case</span> DISPLAY_WIDTH: <span class="Delimiter">{</span>
<span id="L294" class="LineNr">294 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L295" class="LineNr">295 </span> products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L296" class="LineNr">296 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>tb_width<span class="Delimiter">());</span>
<span id="L297" class="LineNr">297 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L298" class="LineNr">298 </span><span class="Delimiter">}</span>
<span id="L299" class="LineNr">299 </span>
<span id="L300" class="LineNr">300 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L301" class="LineNr">301 </span>DISPLAY_HEIGHT<span class="Delimiter">,</span>
<span id="L302" class="LineNr">302 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L303" class="LineNr">303 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"display-height"</span><span class="Delimiter">,</span> DISPLAY_HEIGHT<span class="Delimiter">);</span>
<span id="L304" class="LineNr">304 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L305" class="LineNr">305 </span><span class="Normal">case</span> DISPLAY_HEIGHT: <span class="Delimiter">{</span>
<span id="L306" class="LineNr">306 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L307" class="LineNr">307 </span><span class="Delimiter">}</span>
<span id="L308" class="LineNr">308 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L309" class="LineNr">309 </span><span class="Normal">case</span> DISPLAY_HEIGHT: <span class="Delimiter">{</span>
<span id="L310" class="LineNr">310 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L311" class="LineNr">311 </span> products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L312" class="LineNr">312 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>tb_height<span class="Delimiter">());</span>
<span id="L313" class="LineNr">313 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L314" class="LineNr">314 </span><span class="Delimiter">}</span>
<span id="L315" class="LineNr">315 </span>
<span id="L316" class="LineNr">316 </span><span class="SalientComment">//:: Keyboard/mouse management</span>
<span id="L317" class="LineNr">317 </span>
<span id="L318" class="LineNr">318 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L319" class="LineNr">319 </span>WAIT_FOR_SOME_INTERACTION<span class="Delimiter">,</span>
<span id="L320" class="LineNr">320 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L321" class="LineNr">321 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"wait-for-some-interaction"</span><span class="Delimiter">,</span> WAIT_FOR_SOME_INTERACTION<span class="Delimiter">);</span>
<span id="L322" class="LineNr">322 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L323" class="LineNr">323 </span><span class="Normal">case</span> WAIT_FOR_SOME_INTERACTION: <span class="Delimiter">{</span>
<span id="L324" class="LineNr">324 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L325" class="LineNr">325 </span><span class="Delimiter">}</span>
<span id="L326" class="LineNr">326 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L327" class="LineNr">327 </span><span class="Normal">case</span> WAIT_FOR_SOME_INTERACTION: <span class="Delimiter">{</span>
<span id="L328" class="LineNr">328 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L329" class="LineNr">329 </span> tb_event event<span class="Delimiter">;</span>
<span id="L330" class="LineNr">330 </span> tb_poll_event<span class="Delimiter">(</span>&event<span class="Delimiter">);</span>
<span id="L331" class="LineNr">331 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L332" class="LineNr">332 </span><span class="Delimiter">}</span>
<span id="L333" class="LineNr">333 </span>
<span id="L334" class="LineNr">334 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L335" class="LineNr">335 </span>CHECK_FOR_INTERACTION<span class="Delimiter">,</span>
<span id="L336" class="LineNr">336 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L337" class="LineNr">337 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"check-for-interaction"</span><span class="Delimiter">,</span> CHECK_FOR_INTERACTION<span class="Delimiter">);</span>
<span id="L338" class="LineNr">338 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L339" class="LineNr">339 </span><span class="Normal">case</span> CHECK_FOR_INTERACTION: <span class="Delimiter">{</span>
<span id="L340" class="LineNr">340 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L341" class="LineNr">341 </span><span class="Delimiter">}</span>
<span id="L342" class="LineNr">342 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L343" class="LineNr">343 </span><span class="Normal">case</span> CHECK_FOR_INTERACTION: <span class="Delimiter">{</span>
<span id="L344" class="LineNr">344 </span> <a href='080display.cc.html#L20'>CHECK_CONSOLE</a><span class="Delimiter">;</span>
<span id="L345" class="LineNr">345 </span> products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span> <span class="Comment">// result and status</span>
<span id="L346" class="LineNr">346 </span> tb_event event<span class="Delimiter">;</span>
<span id="L347" class="LineNr">347 </span> <span class="Normal">int</span> event_type = tb_peek_event<span class="Delimiter">(</span>&event<span class="Delimiter">,</span> <span class="Constant">5</span><span class="Comment">/*</span><span class="Comment">ms</span><span class="Comment">*/</span><span class="Delimiter">);</span>
<span id="L348" class="LineNr">348 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event_type == TB_EVENT_KEY && event<span class="Delimiter">.</span>ch<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L349" class="LineNr">349 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">text event</span><span class="Comment">*/</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L350" class="LineNr">350 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>ch<span class="Delimiter">);</span>
<span id="L351" class="LineNr">351 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L352" class="LineNr">352 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L353" class="LineNr">353 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">found</span><span class="Comment">*/</span><span class="Constant">true</span><span class="Delimiter">);</span>
<span id="L354" class="LineNr">354 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L355" class="LineNr">355 </span> <span class="Delimiter">}</span>
<span id="L356" class="LineNr">356 </span> <span class="Comment">// treat keys within ascii as unicode characters</span>
<span id="L357" class="LineNr">357 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event_type == TB_EVENT_KEY && event<span class="Delimiter">.</span>key < <span class="Constant">0xff</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L358" class="LineNr">358 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">text event</span><span class="Comment">*/</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L359" class="LineNr">359 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event<span class="Delimiter">.</span>key == TB_KEY_CTRL_C<span class="Delimiter">)</span> exit<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L360" class="LineNr">360 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event<span class="Delimiter">.</span>key == TB_KEY_BACKSPACE2<span class="Delimiter">)</span> event<span class="Delimiter">.</span>key = TB_KEY_BACKSPACE<span class="Delimiter">;</span>
<span id="L361" class="LineNr">361 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event<span class="Delimiter">.</span>key == TB_KEY_CARRIAGE_RETURN<span class="Delimiter">)</span> event<span class="Delimiter">.</span>key = TB_KEY_NEWLINE<span class="Delimiter">;</span>
<span id="L362" class="LineNr">362 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>key<span class="Delimiter">);</span>
<span id="L363" class="LineNr">363 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L364" class="LineNr">364 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L365" class="LineNr">365 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">found</span><span class="Comment">*/</span><span class="Constant">true</span><span class="Delimiter">);</span>
<span id="L366" class="LineNr">366 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L367" class="LineNr">367 </span> <span class="Delimiter">}</span>
<span id="L368" class="LineNr">368 </span> <span class="Comment">// keys outside ascii aren't unicode characters but arbitrary termbox inventions</span>
<span id="L369" class="LineNr">369 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event_type == TB_EVENT_KEY<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L370" class="LineNr">370 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">keycode event</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L371" class="LineNr">371 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>key<span class="Delimiter">);</span>
<span id="L372" class="LineNr">372 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L373" class="LineNr">373 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L374" class="LineNr">374 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">found</span><span class="Comment">*/</span><span class="Constant">true</span><span class="Delimiter">);</span>
<span id="L375" class="LineNr">375 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L376" class="LineNr">376 </span> <span class="Delimiter">}</span>
<span id="L377" class="LineNr">377 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event_type == TB_EVENT_MOUSE<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L378" class="LineNr">378 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">touch event</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L379" class="LineNr">379 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>key<span class="Delimiter">);</span> <span class="Comment">// which button, etc.</span>
<span id="L380" class="LineNr">380 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>y<span class="Delimiter">);</span> <span class="Comment">// row</span>
<span id="L381" class="LineNr">381 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>x<span class="Delimiter">);</span> <span class="Comment">// column</span>
<span id="L382" class="LineNr">382 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">found</span><span class="Comment">*/</span><span class="Constant">true</span><span class="Delimiter">);</span>
<span id="L383" class="LineNr">383 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L384" class="LineNr">384 </span> <span class="Delimiter">}</span>
<span id="L385" class="LineNr">385 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>event_type == TB_EVENT_RESIZE<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L386" class="LineNr">386 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">resize event</span><span class="Comment">*/</span><span class="Constant">3</span><span class="Delimiter">);</span>
<span id="L387" class="LineNr">387 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>w<span class="Delimiter">);</span> <span class="Comment">// width</span>
<span id="L388" class="LineNr">388 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>event<span class="Delimiter">.</span>h<span class="Delimiter">);</span> <span class="Comment">// height</span>
<span id="L389" class="LineNr">389 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L390" class="LineNr">390 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">found</span><span class="Comment">*/</span><span class="Constant">true</span><span class="Delimiter">);</span>
<span id="L391" class="LineNr">391 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L392" class="LineNr">392 </span> <span class="Delimiter">}</span>
<span id="L393" class="LineNr">393 </span> assert<span class="Delimiter">(</span>event_type == <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L394" class="LineNr">394 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L395" class="LineNr">395 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L396" class="LineNr">396 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L397" class="LineNr">397 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L398" class="LineNr">398 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">found</span><span class="Comment">*/</span><span class="Constant">false</span><span class="Delimiter">);</span>
<span id="L399" class="LineNr">399 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L400" class="LineNr">400 </span><span class="Delimiter">}</span>
<span id="L401" class="LineNr">401 </span>
<span id="L402" class="LineNr">402 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L403" class="LineNr">403 </span>INTERACTIONS_LEFT<span class="Delimiter">,</span>
<span id="L404" class="LineNr">404 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L405" class="LineNr">405 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"interactions-left?"</span><span class="Delimiter">,</span> INTERACTIONS_LEFT<span class="Delimiter">);</span>
<span id="L406" class="LineNr">406 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L407" class="LineNr">407 </span><span class="Normal">case</span> INTERACTIONS_LEFT: <span class="Delimiter">{</span>
<span id="L408" class="LineNr">408 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L409" class="LineNr">409 </span><span class="Delimiter">}</span>
<span id="L410" class="LineNr">410 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L411" class="LineNr">411 </span><span class="Normal">case</span> INTERACTIONS_LEFT: <span class="Delimiter">{</span>
<span id="L412" class="LineNr">412 </span> <a href='080display.cc.html#L20'>CHECK_CONSOLE</a><span class="Delimiter">;</span>
<span id="L413" class="LineNr">413 </span> products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L414" class="LineNr">414 </span> products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>tb_event_ready<span class="Delimiter">());</span>
<span id="L415" class="LineNr">415 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L416" class="LineNr">416 </span><span class="Delimiter">}</span>
<span id="L417" class="LineNr">417 </span>
<span id="L418" class="LineNr">418 </span><span class="Comment">//: hacks to make text-mode apps more responsive under Unix</span>
<span id="L419" class="LineNr">419 </span>
<span id="L420" class="LineNr">420 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L421" class="LineNr">421 </span>CLEAR_LINE_ON_DISPLAY<span class="Delimiter">,</span>
<span id="L422" class="LineNr">422 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L423" class="LineNr">423 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"clear-line-on-display"</span><span class="Delimiter">,</span> CLEAR_LINE_ON_DISPLAY<span class="Delimiter">);</span>
<span id="L424" class="LineNr">424 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L425" class="LineNr">425 </span><span class="Normal">case</span> CLEAR_LINE_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L426" class="LineNr">426 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L427" class="LineNr">427 </span><span class="Delimiter">}</span>
<span id="L428" class="LineNr">428 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L429" class="LineNr">429 </span><span class="Normal">case</span> CLEAR_LINE_ON_DISPLAY: <span class="Delimiter">{</span>
<span id="L430" class="LineNr">430 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L431" class="LineNr">431 </span> <span class="Normal">int</span> width = tb_width<span class="Delimiter">();</span>
<span id="L432" class="LineNr">432 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> x = Display_column<span class="Delimiter">;</span> x < width<span class="Delimiter">;</span> ++x<span class="Delimiter">)</span>
<span id="L433" class="LineNr">433 </span> tb_print<span class="Delimiter">(</span><span class="Constant">' '</span><span class="Delimiter">,</span> TB_WHITE<span class="Delimiter">,</span> TB_BLACK<span class="Delimiter">);</span>
<span id="L434" class="LineNr">434 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L435" class="LineNr">435 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L436" class="LineNr">436 </span><span class="Delimiter">}</span>
<span id="L437" class="LineNr">437 </span>
<span id="L438" class="LineNr">438 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L439" class="LineNr">439 </span>CLEAR_DISPLAY_FROM<span class="Delimiter">,</span>
<span id="L440" class="LineNr">440 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L441" class="LineNr">441 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"clear-display-from"</span><span class="Delimiter">,</span> CLEAR_DISPLAY_FROM<span class="Delimiter">);</span>
<span id="L442" class="LineNr">442 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L443" class="LineNr">443 </span><span class="Normal">case</span> CLEAR_DISPLAY_FROM: <span class="Delimiter">{</span>
<span id="L444" class="LineNr">444 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L445" class="LineNr">445 </span><span class="Delimiter">}</span>
<span id="L446" class="LineNr">446 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L447" class="LineNr">447 </span><span class="Normal">case</span> CLEAR_DISPLAY_FROM: <span class="Delimiter">{</span>
<span id="L448" class="LineNr">448 </span> <a href='080display.cc.html#L12'>CHECK_SCREEN</a><span class="Delimiter">;</span>
<span id="L449" class="LineNr">449 </span> <span class="Comment">// todo: error checking</span>
<span id="L450" class="LineNr">450 </span> <span class="Normal">int</span> row = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L451" class="LineNr">451 </span> <span class="Normal">int</span> column = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L452" class="LineNr">452 </span> <span class="Normal">int</span> left = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L453" class="LineNr">453 </span> <span class="Normal">int</span> right = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">3</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L454" class="LineNr">454 </span> <span class="Normal">int</span> height=tb_height<span class="Delimiter">();</span>
<span id="L455" class="LineNr">455 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">nada</span><span class="Comment">*/</span><span class="Delimiter">;</span> row < height<span class="Delimiter">;</span> ++row<span class="Delimiter">,</span> column=left<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span class="Comment">// start column from left in every inner loop except first</span>
<span id="L456" class="LineNr">456 </span> tb_set_cursor<span class="Delimiter">(</span>column<span class="Delimiter">,</span> row<span class="Delimiter">);</span>
<span id="L457" class="LineNr">457 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">nada</span><span class="Comment">*/</span><span class="Delimiter">;</span> column <= right<span class="Delimiter">;</span> ++column<span class="Delimiter">)</span>
<span id="L458" class="LineNr">458 </span> tb_print<span class="Delimiter">(</span><span class="Constant">' '</span><span class="Delimiter">,</span> TB_WHITE<span class="Delimiter">,</span> TB_BLACK<span class="Delimiter">);</span>
<span id="L459" class="LineNr">459 </span> <span class="Delimiter">}</span>
<span id="L460" class="LineNr">460 </span> tb_set_cursor<span class="Delimiter">(</span>Display_column<span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
<span id="L461" class="LineNr">461 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L462" class="LineNr">462 </span><span class="Delimiter">}</span>
</pre>
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