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<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Wrappers around interaction primitives that take a potentially fake object</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment"># and are thus easier to test.</span>
<span id="L3" class="LineNr"> 3 </span>
<span id="L4" class="LineNr"> 4 </span><span class="muData">exclusive-container</span> <a href='084console.mu.html#L4'>event</a> [
<span id="L5" class="LineNr"> 5 </span> text:char
<span id="L6" class="LineNr"> 6 </span> keycode:num <span class="Comment"># keys on keyboard without a unicode representation</span>
<span id="L7" class="LineNr"> 7 </span> touch:<a href='084console.mu.html#L12'>touch-event</a> <span class="Comment"># mouse, track ball, etc.</span>
<span id="L8" class="LineNr"> 8 </span> resize:<a href='084console.mu.html#L18'>resize-event</a>
<span id="L9" class="LineNr"> 9 </span> <span class="Comment"># update the assume-console handler if you add more variants</span>
<span id="L10" class="LineNr"> 10 </span>]
<span id="L11" class="LineNr"> 11 </span>
<span id="L12" class="LineNr"> 12 </span><span class="muData">container</span> <a href='084console.mu.html#L12'>touch-event</a> [
<span id="L13" class="LineNr"> 13 </span> type:num
<span id="L14" class="LineNr"> 14 </span> row:num
<span id="L15" class="LineNr"> 15 </span> column:num
<span id="L16" class="LineNr"> 16 </span>]
<span id="L17" class="LineNr"> 17 </span>
<span id="L18" class="LineNr"> 18 </span><span class="muData">container</span> <a href='084console.mu.html#L18'>resize-event</a> [
<span id="L19" class="LineNr"> 19 </span> width:num
<span id="L20" class="LineNr"> 20 </span> height:num
<span id="L21" class="LineNr"> 21 </span>]
<span id="L22" class="LineNr"> 22 </span>
<span id="L23" class="LineNr"> 23 </span><span class="muData">container</span> <a href='084console.mu.html#L23'>console</a> [
<span id="L24" class="LineNr"> 24 </span> current-event-index:num
<span id="L25" class="LineNr"> 25 </span> events:&:@:<a href='084console.mu.html#L4'>event</a>
<span id="L26" class="LineNr"> 26 </span>]
<span id="L27" class="LineNr"> 27 </span>
<span id="L28" class="LineNr"> 28 </span><span class="muRecipe">def</span> <a href='084console.mu.html#L28'>new-fake-console</a> events:&:@:<a href='084console.mu.html#L4'>event</a><span class="muRecipe"> -> </span>result:&:<a href='084console.mu.html#L23'>console</a> [
<span id="L29" class="LineNr"> 29 </span> <span class="Constant">local-scope</span>
<span id="L30" class="LineNr"> 30 </span> <span class="Constant">load-ingredients</span>
<span id="L31" class="LineNr"> 31 </span> result:&:<a href='084console.mu.html#L23'>console</a> <span class="Special"><-</span> new <span class="Constant"><a href='084console.mu.html#L23'>console</a>:type</span>
<span id="L32" class="LineNr"> 32 </span> *result <span class="Special"><-</span> put *result, <span class="Constant">events:offset</span>, events
<span id="L33" class="LineNr"> 33 </span>]
<span id="L34" class="LineNr"> 34 </span>
<span id="L35" class="LineNr"> 35 </span><span class="muRecipe">def</span> <a href='084console.mu.html#L35'>read-event</a> <a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a><span class="muRecipe"> -> </span>result:<a href='084console.mu.html#L4'>event</a>, found?:bool, quit?:bool, <a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a> [
<span id="L36" class="LineNr"> 36 </span> <span class="Constant">local-scope</span>
<span id="L37" class="LineNr"> 37 </span> <span class="Constant">load-ingredients</span>
<span id="L38" class="LineNr"> 38 </span> <span class="Delimiter">{</span>
<span id="L39" class="LineNr"> 39 </span> <span class="Conceal">¦</span> <span class="muControl">break-unless</span> <a href='084console.mu.html#L23'>console</a>
<span id="L40" class="LineNr"> 40 </span> <span class="Conceal">¦</span> current-event-index:num <span class="Special"><-</span> get *console, <span class="Constant">current-event-index:offset</span>
<span id="L41" class="LineNr"> 41 </span> <span class="Conceal">¦</span> buf:&:@:<a href='084console.mu.html#L4'>event</a> <span class="Special"><-</span> get *console, <span class="Constant">events:offset</span>
<span id="L42" class="LineNr"> 42 </span> <span class="Conceal">¦</span> <span class="Delimiter">{</span>
<span id="L43" class="LineNr"> 43 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> max:num <span class="Special"><-</span> length *buf
<span id="L44" class="LineNr"> 44 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> done?:bool <span class="Special"><-</span> greater-or-equal current-event-index, max
<span id="L45" class="LineNr"> 45 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="muControl">break-unless</span> done?
<span id="L46" class="LineNr"> 46 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> dummy:&:<a href='084console.mu.html#L4'>event</a> <span class="Special"><-</span> new <span class="Constant"><a href='084console.mu.html#L4'>event</a>:type</span>
<span id="L47" class="LineNr"> 47 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="muControl">return</span> *dummy, <span class="Constant">1/found</span>, <span class="Constant">1/quit</span>
<span id="L48" class="LineNr"> 48 </span> <span class="Conceal">¦</span> <span class="Delimiter">}</span>
<span id="L49" class="LineNr"> 49 </span> <span class="Conceal">¦</span> result <span class="Special"><-</span> index *buf, current-event-index
<span id="L50" class="LineNr"> 50 </span> <span class="Conceal">¦</span> current-event-index <span class="Special"><-</span> add current-event-index,<span class="Constant"> 1</span>
<span id="L51" class="LineNr"> 51 </span> <span class="Conceal">¦</span> *console <span class="Special"><-</span> put *console, <span class="Constant">current-event-index:offset</span>, current-event-index
<span id="L52" class="LineNr"> 52 </span> <span class="Conceal">¦</span> <span class="muControl">return</span> result, <span class="Constant">1/found</span>, <span class="Constant">0/quit</span>
<span id="L53" class="LineNr"> 53 </span> <span class="Delimiter">}</span>
<span id="L54" class="LineNr"> 54 </span> switch <span class="Comment"># real event source is infrequent; avoid polling it too much</span>
<span id="L55" class="LineNr"> 55 </span> result:<a href='084console.mu.html#L4'>event</a>, found?:bool <span class="Special"><-</span> check-for-interaction
<span id="L56" class="LineNr"> 56 </span> <span class="muControl">return</span> result, found?, <span class="Constant">0/quit</span>
<span id="L57" class="LineNr"> 57 </span>]
<span id="L58" class="LineNr"> 58 </span>
<span id="L59" class="LineNr"> 59 </span><span class="Comment"># variant of read-event for just keyboard events. Discards everything that</span>
<span id="L60" class="LineNr"> 60 </span><span class="Comment"># isn't unicode, so no arrow keys, page-up/page-down, etc. But you still get</span>
<span id="L61" class="LineNr"> 61 </span><span class="Comment"># newlines, tabs, ctrl-d..</span>
<span id="L62" class="LineNr"> 62 </span><span class="muRecipe">def</span> <a href='084console.mu.html#L62'>read-key</a> <a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a><span class="muRecipe"> -> </span>result:char, found?:bool, quit?:bool, <a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a> [
<span id="L63" class="LineNr"> 63 </span> <span class="Constant">local-scope</span>
<span id="L64" class="LineNr"> 64 </span> <span class="Constant">load-ingredients</span>
<span id="L65" class="LineNr"> 65 </span> x:<a href='084console.mu.html#L4'>event</a>, found?:bool, quit?:bool, <a href='084console.mu.html#L23'>console</a> <span class="Special"><-</span> <a href='084console.mu.html#L35'>read-event</a> <a href='084console.mu.html#L23'>console</a>
<span id="L66" class="LineNr"> 66 </span> <span class="muControl">return-if</span> quit?,<span class="Constant"> 0</span>, found?, quit?
<span id="L67" class="LineNr"> 67 </span> <span class="muControl">return-unless</span> found?,<span class="Constant"> 0</span>, found?, quit?
<span id="L68" class="LineNr"> 68 </span> c:char, converted?:bool <span class="Special"><-</span> maybe-convert x, <span class="Constant">text:variant</span>
<span id="L69" class="LineNr"> 69 </span> <span class="muControl">return-unless</span> converted?,<span class="Constant"> 0</span>, <span class="Constant">0/found</span>, <span class="Constant">0/quit</span>
<span id="L70" class="LineNr"> 70 </span> <span class="muControl">return</span> c, <span class="Constant">1/found</span>, <span class="Constant">0/quit</span>
<span id="L71" class="LineNr"> 71 </span>]
<span id="L72" class="LineNr"> 72 </span>
<span id="L73" class="LineNr"> 73 </span><span class="muRecipe">def</span> <a href='084console.mu.html#L73'>send-keys-to-channel</a> <a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a>, chan:&:<a href='075channel.mu.html#L47'>sink</a>:char, <a href='081print.mu.html#L4'>screen</a>:&:<a href='081print.mu.html#L4'>screen</a><span class="muRecipe"> -> </span><a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a>, chan:&:<a href='075channel.mu.html#L47'>sink</a>:char, <a href='081print.mu.html#L4'>screen</a>:&:<a href='081print.mu.html#L4'>screen</a> [
<span id="L74" class="LineNr"> 74 </span> <span class="Constant">local-scope</span>
<span id="L75" class="LineNr"> 75 </span> <span class="Constant">load-ingredients</span>
<span id="L76" class="LineNr"> 76 </span> <span class="Delimiter">{</span>
<span id="L77" class="LineNr"> 77 </span> <span class="Conceal">¦</span> c:char, found?:bool, quit?:bool, <a href='084console.mu.html#L23'>console</a> <span class="Special"><-</span> <a href='084console.mu.html#L62'>read-key</a> <a href='084console.mu.html#L23'>console</a>
<span id="L78" class="LineNr"> 78 </span> <span class="Conceal">¦</span> <span class="muControl">loop-unless</span> found?
<span id="L79" class="LineNr"> 79 </span> <span class="Conceal">¦</span> <span class="muControl">break-if</span> quit?
<span id="L80" class="LineNr"> 80 </span> <span class="Conceal">¦</span> assert c, <span class="Constant">[invalid <a href='084console.mu.html#L4'>event</a>, expected text]</span>
<span id="L81" class="LineNr"> 81 </span> <span class="Conceal">¦</span> <a href='081print.mu.html#L4'>screen</a> <span class="Special"><-</span> print <a href='081print.mu.html#L4'>screen</a>, c
<span id="L82" class="LineNr"> 82 </span> <span class="Conceal">¦</span> chan <span class="Special"><-</span> <a href='075channel.mu.html#L66'>write</a> chan, c
<span id="L83" class="LineNr"> 83 </span> <span class="Conceal">¦</span> <span class="muControl">loop</span>
<span id="L84" class="LineNr"> 84 </span> <span class="Delimiter">}</span>
<span id="L85" class="LineNr"> 85 </span> chan <span class="Special"><-</span> close chan
<span id="L86" class="LineNr"> 86 </span>]
<span id="L87" class="LineNr"> 87 </span>
<span id="L88" class="LineNr"> 88 </span><span class="muRecipe">def</span> <a href='084console.mu.html#L88'>wait-for-event</a> <a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a><span class="muRecipe"> -> </span><a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a> [
<span id="L89" class="LineNr"> 89 </span> <span class="Constant">local-scope</span>
<span id="L90" class="LineNr"> 90 </span> <span class="Constant">load-ingredients</span>
<span id="L91" class="LineNr"> 91 </span> <span class="Delimiter">{</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Conceal">¦</span> _, found?:bool <span class="Special"><-</span> <a href='084console.mu.html#L35'>read-event</a> <a href='084console.mu.html#L23'>console</a>
<span id="L93" class="LineNr"> 93 </span> <span class="Conceal">¦</span> <span class="muControl">break-if</span> found?
<span id="L94" class="LineNr"> 94 </span> <span class="Conceal">¦</span> switch
<span id="L95" class="LineNr"> 95 </span> <span class="Conceal">¦</span> <span class="muControl">loop</span>
<span id="L96" class="LineNr"> 96 </span> <span class="Delimiter">}</span>
<span id="L97" class="LineNr"> 97 </span>]
<span id="L98" class="LineNr"> 98 </span>
<span id="L99" class="LineNr"> 99 </span><span class="Comment"># use this helper to skip rendering if there's lots of other events queued up</span>
<span id="L100" class="LineNr">100 </span><span class="muRecipe">def</span> <a href='084console.mu.html#L100'>has-more-events?</a> <a href='084console.mu.html#L23'>console</a>:&:<a href='084console.mu.html#L23'>console</a><span class="muRecipe"> -> </span>result:bool [
<span id="L101" class="LineNr">101 </span> <span class="Constant">local-scope</span>
<span id="L102" class="LineNr">102 </span> <span class="Constant">load-ingredients</span>
<span id="L103" class="LineNr">103 </span> <span class="muControl">return-if</span> <a href='084console.mu.html#L23'>console</a>, <span class="Constant">0/false</span> <span class="Comment"># fake consoles should be plenty fast; never skip</span>
<span id="L104" class="LineNr">104 </span> result <span class="Special"><-</span> interactions-left?
<span id="L105" class="LineNr">105 </span>]
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