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<pre id='vimCodeElement'>
<span class="Comment"># Wrappers around interaction primitives that take a potentially fake object</span>
<span class="Comment"># and are thus easier to test.</span>
exclusive-container event [
text:character
keycode:number <span class="Comment"># keys on keyboard without a unicode representation</span>
touch:touch-event <span class="Comment"># mouse, track ball, etc.</span>
<span class="Comment"># update the assume-console handler if you add more variants</span>
]
container touch-event [
type:number
row:number
column:number
]
container console [
index:number
data:address:array:event
]
<span class="muRecipe">recipe</span> new-fake-console [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
result:address:console<span class="Special"> <- </span>new console:type
buf:address:address:array:character<span class="Special"> <- </span>get-address result:address:console/deref, data:offset
<span class="CommentedCode">#? $start-tracing #? 1</span>
buf:address:address:array:character/deref<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="CommentedCode">#? $stop-tracing #? 1</span>
idx:address:number<span class="Special"> <- </span>get-address result:address:console/deref, index:offset
idx:address:number/deref<span class="Special"> <- </span>copy <span class="Constant">0:literal</span>
<span class="muControl">reply</span> result:address:console
]
<span class="muRecipe">recipe</span> read-event [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
x:address:console<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> x:address:console
idx:address:number<span class="Special"> <- </span>get-address x:address:console/deref, index:offset
buf:address:array:event<span class="Special"> <- </span>get x:address:console/deref, data:offset
<span class="Delimiter">{</span>
max:number<span class="Special"> <- </span>length buf:address:array:event/deref
done?:boolean<span class="Special"> <- </span>greater-or-equal idx:address:number/deref, max:number
<span class="muControl">break-unless</span> done?:boolean
dummy:address:event<span class="Special"> <- </span>new event:type
<span class="muControl">reply</span> dummy:address:event/deref, x:address:console/same-as-ingredient:0, <span class="Constant">1:literal/found</span>, <span class="Constant">1:literal/quit</span>
<span class="Delimiter">}</span>
result:event<span class="Special"> <- </span>index buf:address:array:event/deref, idx:address:number/deref
idx:address:number/deref<span class="Special"> <- </span>add idx:address:number/deref, <span class="Constant">1:literal</span>
<span class="muControl">reply</span> result:event, x:address:console/same-as-ingredient:0, <span class="Constant">1:literal/found</span>, <span class="Constant">0:literal/quit</span>
<span class="Delimiter">}</span>
<span class="Comment"># real event source is infrequent; avoid polling it too much</span>
switch
result:event, found?:boolean<span class="Special"> <- </span>check-for-interaction
<span class="muControl">reply</span> result:event, x:address:console/same-as-ingredient:0, found?:boolean, <span class="Constant">0:literal/quit</span>
]
<span class="Comment"># variant of read-event for just keyboard events. Discards everything that</span>
<span class="Comment"># isn't unicode, so no arrow keys, page-up/page-down, etc. But you still get</span>
<span class="Comment"># newlines, tabs, ctrl-d..</span>
<span class="muRecipe">recipe</span> read-key [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
<span class="CommentedCode">#? $print default-space:address:array:location #? 1</span>
<span class="CommentedCode">#? $exit #? 1</span>
<span class="CommentedCode">#? $start-tracing #? 1</span>
console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
x:event, console:address, found?:boolean, quit?:boolean<span class="Special"> <- </span>read-event console:address
<span class="CommentedCode">#? $print [aaa 1] #? 1</span>
<span class="muControl">reply-if</span> quit?:boolean, <span class="Constant">0:literal</span>, console:address/same-as-ingredient:0, found?:boolean, quit?:boolean
<span class="CommentedCode">#? $print [aaa 2] #? 1</span>
<span class="muControl">reply-unless</span> found?:boolean, <span class="Constant">0:literal</span>, console:address/same-as-ingredient:0, found?:boolean, quit?:boolean
<span class="CommentedCode">#? $print [aaa 3] #? 1</span>
c:address:character<span class="Special"> <- </span>maybe-convert x:event, text:variant
<span class="muControl">reply-unless</span> c:address:character, <span class="Constant">0:literal</span>, console:address/same-as-ingredient:0, <span class="Constant">0:literal/found</span>, <span class="Constant">0:literal/quit</span>
<span class="CommentedCode">#? $print [aaa 4] #? 1</span>
<span class="muControl">reply</span> c:address:character/deref, console:address/same-as-ingredient:0, <span class="Constant">1:literal/found</span>, <span class="Constant">0:literal/quit</span>
]
<span class="muRecipe">recipe</span> send-keys-to-channel [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
chan:address:channel<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
c:character, console:address, found?:boolean, quit?:boolean<span class="Special"> <- </span>read-key console:address
<span class="muControl">loop-unless</span> found?:boolean
<span class="muControl">break-if</span> quit?:boolean
assert c:character, <span class="Constant">[invalid event, expected text]</span>
print-character screen:address, c:character
chan:address:channel<span class="Special"> <- </span>write chan:address:channel, c:character
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="muRecipe">recipe</span> wait-for-event [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
_, console:address, found?:boolean<span class="Special"> <- </span>read-event console:address
<span class="muControl">loop-unless</span> found?:boolean
<span class="Delimiter">}</span>
]
<span class="Comment"># use this helper to skip rendering if there's lots of other events queued up</span>
<span class="muRecipe">recipe</span> has-more-events? [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> console:address
<span class="Comment"># fake consoles should be plenty fast; never skip</span>
<span class="muControl">reply</span> <span class="Constant">0:literal/false</span>
<span class="Delimiter">}</span>
result:boolean<span class="Special"> <- </span>interactions-left?
<span class="muControl">reply</span> result:boolean
]
</pre>
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