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<a href='https://github.com/akkartik/mu/blob/master/apps/tile/rpn.mu'>https://github.com/akkartik/mu/blob/master/apps/tile/rpn.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='rpn.mu.html#L1'>evaluate</a></span> defs: (addr handle function), bindings: (addr table), scratch: (addr line), end: (addr word), out: (addr value-stack) <span class="Delimiter">{</span>
<span id="L2" class="LineNr"> 2 </span> <span class="PreProc">var</span> line/<span class="Constant">eax</span>: (addr line) <span class="SpecialChar"><-</span> copy scratch
<span id="L3" class="LineNr"> 3 </span> <span class="PreProc">var</span> word-ah/<span class="Constant">eax</span>: (addr handle word) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> line, data
<span id="L4" class="LineNr"> 4 </span> <span class="PreProc">var</span> curr/<span class="Constant">eax</span>: (addr word) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *word-ah
<span id="L5" class="LineNr"> 5 </span> <span class="PreProc">var</span> curr-stream-storage: (stream byte <span class="Constant">0x10</span>)
<span id="L6" class="LineNr"> 6 </span> <span class="PreProc">var</span> curr-stream/<span class="Constant">edi</span>: (addr stream byte) <span class="SpecialChar"><-</span> address curr-stream-storage
<span id="L7" class="LineNr"> 7 </span> clear-value-stack out
<span id="L8" class="LineNr"> 8 </span> $evaluate:<span class="PreProc">loop</span>: <span class="Delimiter">{</span>
<span id="L9" class="LineNr"> 9 </span> <span class="muComment"># precondition (should never hit)</span>
<span id="L10" class="LineNr"> 10 </span> compare curr, <span class="Constant">0</span>
<span id="L11" class="LineNr"> 11 </span> <span class="PreProc">break-if-=</span>
<span id="L12" class="LineNr"> 12 </span> <span class="muComment"># update curr-stream</span>
<span id="L13" class="LineNr"> 13 </span> emit-word curr, curr-stream
<span id="L14" class="LineNr"> 14 </span><span class="CommentedCode">#? print-stream-to-real-screen curr-stream</span>
<span id="L15" class="LineNr"> 15 </span><span class="CommentedCode">#? print-string-to-real-screen "\n"</span>
<span id="L16" class="LineNr"> 16 </span> $evaluate:process-word: <span class="Delimiter">{</span>
<span id="L17" class="LineNr"> 17 </span> <span class="muComment"># if curr-stream is an operator, perform it</span>
<span id="L18" class="LineNr"> 18 </span> <span class="Delimiter">{</span>
<span id="L19" class="LineNr"> 19 </span> <span class="PreProc">var</span> is-add?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='../../109stream-equal.subx.html#L9'>stream-data-equal?</a> curr-stream, <span class="Constant">"+"</span>
<span id="L20" class="LineNr"> 20 </span> compare is-add?, <span class="Constant">0</span>
<span id="L21" class="LineNr"> 21 </span> <span class="PreProc">break-if-=</span>
<span id="L22" class="LineNr"> 22 </span> <span class="PreProc">var</span> _b/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack out
<span id="L23" class="LineNr"> 23 </span> <span class="PreProc">var</span> b/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy _b
<span id="L24" class="LineNr"> 24 </span> <span class="PreProc">var</span> a/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack out
<span id="L25" class="LineNr"> 25 </span> a <span class="SpecialChar"><-</span> add b
<span id="L26" class="LineNr"> 26 </span> push-int-to-value-stack out, a
<span id="L27" class="LineNr"> 27 </span> <span class="PreProc">break</span> $evaluate:process-word
<span id="L28" class="LineNr"> 28 </span> <span class="Delimiter">}</span>
<span id="L29" class="LineNr"> 29 </span> <span class="Delimiter">{</span>
<span id="L30" class="LineNr"> 30 </span> <span class="PreProc">var</span> is-sub?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='../../109stream-equal.subx.html#L9'>stream-data-equal?</a> curr-stream, <span class="Constant">"-"</span>
<span id="L31" class="LineNr"> 31 </span> compare is-sub?, <span class="Constant">0</span>
<span id="L32" class="LineNr"> 32 </span> <span class="PreProc">break-if-=</span>
<span id="L33" class="LineNr"> 33 </span> <span class="PreProc">var</span> _b/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack out
<span id="L34" class="LineNr"> 34 </span> <span class="PreProc">var</span> b/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy _b
<span id="L35" class="LineNr"> 35 </span> <span class="PreProc">var</span> a/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack out
<span id="L36" class="LineNr"> 36 </span> a <span class="SpecialChar"><-</span> subtract b
<span id="L37" class="LineNr"> 37 </span> push-int-to-value-stack out, a
<span id="L38" class="LineNr"> 38 </span> <span class="PreProc">break</span> $evaluate:process-word
<span id="L39" class="LineNr"> 39 </span> <span class="Delimiter">}</span>
<span id="L40" class="LineNr"> 40 </span> <span class="Delimiter">{</span>
<span id="L41" class="LineNr"> 41 </span> <span class="PreProc">var</span> is-mul?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='../../109stream-equal.subx.html#L9'>stream-data-equal?</a> curr-stream, <span class="Constant">"*"</span>
<span id="L42" class="LineNr"> 42 </span> compare is-mul?, <span class="Constant">0</span>
<span id="L43" class="LineNr"> 43 </span> <span class="PreProc">break-if-=</span>
<span id="L44" class="LineNr"> 44 </span> <span class="PreProc">var</span> _b/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack out
<span id="L45" class="LineNr"> 45 </span> <span class="PreProc">var</span> b/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy _b
<span id="L46" class="LineNr"> 46 </span> <span class="PreProc">var</span> a/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack out
<span id="L47" class="LineNr"> 47 </span> a <span class="SpecialChar"><-</span> multiply b
<span id="L48" class="LineNr"> 48 </span> push-int-to-value-stack out, a
<span id="L49" class="LineNr"> 49 </span> <span class="PreProc">break</span> $evaluate:process-word
<span id="L50" class="LineNr"> 50 </span> <span class="Delimiter">}</span>
<span id="L51" class="LineNr"> 51 </span> <span class="muComment"># if curr-stream is a known function name, call it appropriately</span>
<span id="L52" class="LineNr"> 52 </span> <span class="Delimiter">{</span>
<span id="L53" class="LineNr"> 53 </span> <span class="PreProc">var</span> callee-h: (handle function)
<span id="L54" class="LineNr"> 54 </span> <span class="PreProc">var</span> callee-ah/<span class="Constant">eax</span>: (addr handle function) <span class="SpecialChar"><-</span> address callee-h
<span id="L55" class="LineNr"> 55 </span> <a href='rpn.mu.html#L101'>find-function</a> defs, curr-stream, callee-ah
<span id="L56" class="LineNr"> 56 </span> <span class="PreProc">var</span> callee/<span class="Constant">eax</span>: (addr function) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *callee-ah
<span id="L57" class="LineNr"> 57 </span> compare callee, <span class="Constant">0</span>
<span id="L58" class="LineNr"> 58 </span> <span class="PreProc">break-if-=</span>
<span id="L59" class="LineNr"> 59 </span> <a href='rpn.mu.html#L122'>perform-call</a> callee, out, defs
<span id="L60" class="LineNr"> 60 </span> <span class="PreProc">break</span> $evaluate:process-word
<span id="L61" class="LineNr"> 61 </span> <span class="Delimiter">}</span>
<span id="L62" class="LineNr"> 62 </span> <span class="muComment"># if it's a name, push its value</span>
<span id="L63" class="LineNr"> 63 </span> <span class="Delimiter">{</span>
<span id="L64" class="LineNr"> 64 </span> compare bindings, <span class="Constant">0</span>
<span id="L65" class="LineNr"> 65 </span> <span class="PreProc">break-if-=</span>
<span id="L66" class="LineNr"> 66 </span> <span class="PreProc">var</span> tmp: (handle array byte)
<span id="L67" class="LineNr"> 67 </span> <span class="PreProc">var</span> curr-string-ah/<span class="Constant">edx</span>: (addr handle array byte) <span class="SpecialChar"><-</span> address tmp
<span id="L68" class="LineNr"> 68 </span> <a href='../../310copy-bytes.subx.html#L59'>stream-to-string</a> curr-stream, curr-string-ah <span class="muComment"># unfortunate leak</span>
<span id="L69" class="LineNr"> 69 </span> <span class="PreProc">var</span> curr-string/<span class="Constant">eax</span>: (addr array byte) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *curr-string-ah
<span id="L70" class="LineNr"> 70 </span> <span class="PreProc">var</span> val-storage: (handle value)
<span id="L71" class="LineNr"> 71 </span> <span class="PreProc">var</span> val-ah/<span class="Constant">edi</span>: (addr handle value) <span class="SpecialChar"><-</span> address val-storage
<span id="L72" class="LineNr"> 72 </span> lookup-binding bindings, curr-string, val-ah
<span id="L73" class="LineNr"> 73 </span> <span class="PreProc">var</span> val/<span class="Constant">eax</span>: (addr value) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *val-ah
<span id="L74" class="LineNr"> 74 </span> compare val, <span class="Constant">0</span>
<span id="L75" class="LineNr"> 75 </span> <span class="PreProc">break-if-=</span>
<span id="L76" class="LineNr"> 76 </span><span class="CommentedCode">#? print-string-to-real-screen "value of "</span>
<span id="L77" class="LineNr"> 77 </span><span class="CommentedCode">#? print-string-to-real-screen curr-string</span>
<span id="L78" class="LineNr"> 78 </span><span class="CommentedCode">#? print-string-to-real-screen " is "</span>
<span id="L79" class="LineNr"> 79 </span><span class="CommentedCode">#? print-int32-hex-to-real-screen result</span>
<span id="L80" class="LineNr"> 80 </span><span class="CommentedCode">#? print-string-to-real-screen "\n"</span>
<span id="L81" class="LineNr"> 81 </span> push-value-stack out, val
<span id="L82" class="LineNr"> 82 </span> <span class="PreProc">break</span> $evaluate:process-word
<span id="L83" class="LineNr"> 83 </span> <span class="Delimiter">}</span>
<span id="L84" class="LineNr"> 84 </span> <span class="muComment"># otherwise assume it's a literal int and push it</span>
<span id="L85" class="LineNr"> 85 </span> <span class="Delimiter">{</span>
<span id="L86" class="LineNr"> 86 </span> <span class="PreProc">var</span> n/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='../../311decimal-int.subx.html#L46'>parse-decimal-int-from-stream</a> curr-stream
<span id="L87" class="LineNr"> 87 </span> push-int-to-value-stack out, n
<span id="L88" class="LineNr"> 88 </span> <span class="Delimiter">}</span>
<span id="L89" class="LineNr"> 89 </span> <span class="Delimiter">}</span>
<span id="L90" class="LineNr"> 90 </span> <span class="muComment"># termination check</span>
<span id="L91" class="LineNr"> 91 </span> compare curr, end
<span id="L92" class="LineNr"> 92 </span> <span class="PreProc">break-if-=</span>
<span id="L93" class="LineNr"> 93 </span> <span class="muComment"># update</span>
<span id="L94" class="LineNr"> 94 </span> <span class="PreProc">var</span> next-word-ah/<span class="Constant">edx</span>: (addr handle word) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> curr, next
<span id="L95" class="LineNr"> 95 </span> curr <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *next-word-ah
<span id="L96" class="LineNr"> 96 </span> <span class="muComment">#</span>
<span id="L97" class="LineNr"> 97 </span> <span class="PreProc">loop</span>
<span id="L98" class="LineNr"> 98 </span> <span class="Delimiter">}</span>
<span id="L99" class="LineNr"> 99 </span><span class="Delimiter">}</span>
<span id="L100" class="LineNr">100 </span>
<span id="L101" class="LineNr">101 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='rpn.mu.html#L101'>find-function</a></span> first: (addr handle function), name: (addr stream byte), out: (addr handle function) <span class="Delimiter">{</span>
<span id="L102" class="LineNr">102 </span> <span class="PreProc">var</span> curr/<span class="Constant">esi</span>: (addr handle function) <span class="SpecialChar"><-</span> copy first
<span id="L103" class="LineNr">103 </span> $find-function:<span class="PreProc">loop</span>: <span class="Delimiter">{</span>
<span id="L104" class="LineNr">104 </span> <span class="PreProc">var</span> _f/<span class="Constant">eax</span>: (addr function) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *curr
<span id="L105" class="LineNr">105 </span> <span class="PreProc">var</span> f/<span class="Constant">ecx</span>: (addr function) <span class="SpecialChar"><-</span> copy _f
<span id="L106" class="LineNr">106 </span> compare f, <span class="Constant">0</span>
<span id="L107" class="LineNr">107 </span> <span class="PreProc">break-if-=</span>
<span id="L108" class="LineNr">108 </span> <span class="PreProc">var</span> curr-name-ah/<span class="Constant">eax</span>: (addr handle array byte) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> f, name
<span id="L109" class="LineNr">109 </span> <span class="PreProc">var</span> curr-name/<span class="Constant">eax</span>: (addr array byte) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *curr-name-ah
<span id="L110" class="LineNr">110 </span> <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='../../109stream-equal.subx.html#L9'>stream-data-equal?</a> name, curr-name
<span id="L111" class="LineNr">111 </span> compare done?, <span class="Constant">0</span> <span class="muComment"># false</span>
<span id="L112" class="LineNr">112 </span> <span class="Delimiter">{</span>
<span id="L113" class="LineNr">113 </span> <span class="PreProc">break-if-=</span>
<span id="L114" class="LineNr">114 </span> <a href='../../120allocate.subx.html#L489'>copy-handle</a> *curr, out
<span id="L115" class="LineNr">115 </span> <span class="PreProc">break</span> $find-function:<span class="PreProc">loop</span>
<span id="L116" class="LineNr">116 </span> <span class="Delimiter">}</span>
<span id="L117" class="LineNr">117 </span> curr <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> f, next
<span id="L118" class="LineNr">118 </span> <span class="PreProc">loop</span>
<span id="L119" class="LineNr">119 </span> <span class="Delimiter">}</span>
<span id="L120" class="LineNr">120 </span><span class="Delimiter">}</span>
<span id="L121" class="LineNr">121 </span>
<span id="L122" class="LineNr">122 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='rpn.mu.html#L122'>perform-call</a></span> _callee: (addr function), caller-stack: (addr value-stack), defs: (addr handle function) <span class="Delimiter">{</span>
<span id="L123" class="LineNr">123 </span> <span class="PreProc">var</span> callee/<span class="Constant">ecx</span>: (addr function) <span class="SpecialChar"><-</span> copy _callee
<span id="L124" class="LineNr">124 </span> <span class="muComment"># create bindings for args</span>
<span id="L125" class="LineNr">125 </span> <span class="PreProc">var</span> table-storage: table
<span id="L126" class="LineNr">126 </span> <span class="PreProc">var</span> table/<span class="Constant">esi</span>: (addr table) <span class="SpecialChar"><-</span> address table-storage
<span id="L127" class="LineNr">127 </span> initialize-table table, <span class="Constant">0x10</span>
<span id="L128" class="LineNr">128 </span> <a href='rpn.mu.html#L144'>bind-args</a> callee, caller-stack, table
<span id="L129" class="LineNr">129 </span> <span class="muComment"># obtain body</span>
<span id="L130" class="LineNr">130 </span> <span class="PreProc">var</span> body-ah/<span class="Constant">eax</span>: (addr handle line) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> callee, body
<span id="L131" class="LineNr">131 </span> <span class="PreProc">var</span> body/<span class="Constant">eax</span>: (addr line) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *body-ah
<span id="L132" class="LineNr">132 </span> <span class="muComment"># perform call</span>
<span id="L133" class="LineNr">133 </span> <span class="PreProc">var</span> stack-storage: value-stack
<span id="L134" class="LineNr">134 </span> <span class="PreProc">var</span> stack/<span class="Constant">edi</span>: (addr value-stack) <span class="SpecialChar"><-</span> address stack-storage
<span id="L135" class="LineNr">135 </span> initialize-value-stack stack, <span class="Constant">0x10</span>
<span id="L136" class="LineNr">136 </span><span class="CommentedCode">#? print-string-to-real-screen "about to enter recursive eval\n"</span>
<span id="L137" class="LineNr">137 </span> <a href='rpn.mu.html#L1'>evaluate</a> defs, table, body, <span class="Constant">0</span>, stack
<span id="L138" class="LineNr">138 </span><span class="CommentedCode">#? print-string-to-real-screen "exited recursive eval\n"</span>
<span id="L139" class="LineNr">139 </span> <span class="muComment"># stitch result from stack into caller</span>
<span id="L140" class="LineNr">140 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack stack
<span id="L141" class="LineNr">141 </span> push-int-to-value-stack caller-stack, result
<span id="L142" class="LineNr">142 </span><span class="Delimiter">}</span>
<span id="L143" class="LineNr">143 </span>
<span id="L144" class="LineNr">144 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='rpn.mu.html#L144'>bind-args</a></span> _callee: (addr function), caller-stack: (addr value-stack), table: (addr table) <span class="Delimiter">{</span>
<span id="L145" class="LineNr">145 </span> <span class="PreProc">var</span> callee/<span class="Constant">ecx</span>: (addr function) <span class="SpecialChar"><-</span> copy _callee
<span id="L146" class="LineNr">146 </span> <span class="PreProc">var</span> curr-arg-ah/<span class="Constant">eax</span>: (addr handle word) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> callee, args
<span id="L147" class="LineNr">147 </span> <span class="PreProc">var</span> curr-arg/<span class="Constant">eax</span>: (addr word) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *curr-arg-ah
<span id="L148" class="LineNr">148 </span> <span class="muComment">#</span>
<span id="L149" class="LineNr">149 </span> <span class="PreProc">var</span> curr-key-storage: (handle array byte)
<span id="L150" class="LineNr">150 </span> <span class="PreProc">var</span> curr-key/<span class="Constant">edx</span>: (addr handle array byte) <span class="SpecialChar"><-</span> address curr-key-storage
<span id="L151" class="LineNr">151 </span> <span class="Delimiter">{</span>
<span id="L152" class="LineNr">152 </span> compare curr-arg, <span class="Constant">0</span>
<span id="L153" class="LineNr">153 </span> <span class="PreProc">break-if-=</span>
<span id="L154" class="LineNr">154 </span> <span class="muComment"># create binding</span>
<span id="L155" class="LineNr">155 </span> word-to-string curr-arg, curr-key
<span id="L156" class="LineNr">156 </span> <span class="Delimiter">{</span>
<span id="L157" class="LineNr">157 </span><span class="CommentedCode">#? var tmp/eax: (addr array byte) <- lookup *curr-key</span>
<span id="L158" class="LineNr">158 </span><span class="CommentedCode">#? print-string-to-real-screen "binding "</span>
<span id="L159" class="LineNr">159 </span><span class="CommentedCode">#? print-string-to-real-screen tmp</span>
<span id="L160" class="LineNr">160 </span><span class="CommentedCode">#? print-string-to-real-screen " to "</span>
<span id="L161" class="LineNr">161 </span> <span class="PreProc">var</span> curr-val/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> pop-int-from-value-stack caller-stack
<span id="L162" class="LineNr">162 </span><span class="CommentedCode">#? print-int32-decimal-to-real-screen curr-val</span>
<span id="L163" class="LineNr">163 </span><span class="CommentedCode">#? print-string-to-real-screen "\n"</span>
<span id="L164" class="LineNr">164 </span> bind-int-in-table table, curr-key, curr-val
<span id="L165" class="LineNr">165 </span> <span class="Delimiter">}</span>
<span id="L166" class="LineNr">166 </span> <span class="muComment">#</span>
<span id="L167" class="LineNr">167 </span> <span class="PreProc">var</span> next-arg-ah/<span class="Constant">edx</span>: (addr handle word) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> curr-arg, next
<span id="L168" class="LineNr">168 </span> curr-arg <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *next-arg-ah
<span id="L169" class="LineNr">169 </span> <span class="PreProc">loop</span>
<span id="L170" class="LineNr">170 </span> <span class="Delimiter">}</span>
<span id="L171" class="LineNr">171 </span><span class="Delimiter">}</span>
<span id="L172" class="LineNr">172 </span>
<span id="L173" class="LineNr">173 </span><span class="muComment"># Copy of 'simplify' that just tracks the maximum stack depth needed</span>
<span id="L174" class="LineNr">174 </span><span class="muComment"># Doesn't actually need to simulate the stack, since every word has a predictable effect.</span>
<span id="L175" class="LineNr">175 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='rpn.mu.html#L175'>max-stack-depth</a></span> first-word: (addr word), final-word: (addr word)<span class="PreProc"> -> </span>result/<span class="Constant">edi</span>: int <span class="Delimiter">{</span>
<span id="L176" class="LineNr">176 </span> <span class="PreProc">var</span> curr-word/<span class="Constant">eax</span>: (addr word) <span class="SpecialChar"><-</span> copy first-word
<span id="L177" class="LineNr">177 </span> <span class="PreProc">var</span> curr-depth/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L178" class="LineNr">178 </span> result <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L179" class="LineNr">179 </span> $max-stack-depth:<span class="PreProc">loop</span>: <span class="Delimiter">{</span>
<span id="L180" class="LineNr">180 </span> $max-stack-depth:process-word: <span class="Delimiter">{</span>
<span id="L181" class="LineNr">181 </span> <span class="muComment"># handle operators</span>
<span id="L182" class="LineNr">182 </span> <span class="Delimiter">{</span>
<span id="L183" class="LineNr">183 </span> <span class="PreProc">var</span> is-add?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> word-equal? curr-word, <span class="Constant">"+"</span>
<span id="L184" class="LineNr">184 </span> compare is-add?, <span class="Constant">0</span>
<span id="L185" class="LineNr">185 </span> <span class="PreProc">break-if-=</span>
<span id="L186" class="LineNr">186 </span> curr-depth <span class="SpecialChar"><-</span> decrement
<span id="L187" class="LineNr">187 </span> <span class="PreProc">break</span> $max-stack-depth:process-word
<span id="L188" class="LineNr">188 </span> <span class="Delimiter">}</span>
<span id="L189" class="LineNr">189 </span> <span class="Delimiter">{</span>
<span id="L190" class="LineNr">190 </span> <span class="PreProc">var</span> is-sub?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> word-equal? curr-word, <span class="Constant">"-"</span>
<span id="L191" class="LineNr">191 </span> compare is-sub?, <span class="Constant">0</span>
<span id="L192" class="LineNr">192 </span> <span class="PreProc">break-if-=</span>
<span id="L193" class="LineNr">193 </span> curr-depth <span class="SpecialChar"><-</span> decrement
<span id="L194" class="LineNr">194 </span> <span class="PreProc">break</span> $max-stack-depth:process-word
<span id="L195" class="LineNr">195 </span> <span class="Delimiter">}</span>
<span id="L196" class="LineNr">196 </span> <span class="Delimiter">{</span>
<span id="L197" class="LineNr">197 </span> <span class="PreProc">var</span> is-mul?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> word-equal? curr-word, <span class="Constant">"*"</span>
<span id="L198" class="LineNr">198 </span> compare is-mul?, <span class="Constant">0</span>
<span id="L199" class="LineNr">199 </span> <span class="PreProc">break-if-=</span>
<span id="L200" class="LineNr">200 </span> curr-depth <span class="SpecialChar"><-</span> decrement
<span id="L201" class="LineNr">201 </span> <span class="PreProc">break</span> $max-stack-depth:process-word
<span id="L202" class="LineNr">202 </span> <span class="Delimiter">}</span>
<span id="L203" class="LineNr">203 </span> <span class="muComment"># otherwise it's an int (do we need error-checking?)</span>
<span id="L204" class="LineNr">204 </span> curr-depth <span class="SpecialChar"><-</span> increment
<span id="L205" class="LineNr">205 </span> <span class="muComment"># update max depth if necessary</span>
<span id="L206" class="LineNr">206 </span> <span class="Delimiter">{</span>
<span id="L207" class="LineNr">207 </span> compare curr-depth, result
<span id="L208" class="LineNr">208 </span> <span class="PreProc">break-if-<=</span>
<span id="L209" class="LineNr">209 </span> result <span class="SpecialChar"><-</span> copy curr-depth
<span id="L210" class="LineNr">210 </span> <span class="Delimiter">}</span>
<span id="L211" class="LineNr">211 </span> <span class="Delimiter">}</span>
<span id="L212" class="LineNr">212 </span> <span class="muComment"># if curr-word == final-word break</span>
<span id="L213" class="LineNr">213 </span> compare curr-word, final-word
<span id="L214" class="LineNr">214 </span> <span class="PreProc">break-if-=</span>
<span id="L215" class="LineNr">215 </span> <span class="muComment"># curr-word = curr-word->next</span>
<span id="L216" class="LineNr">216 </span> <span class="PreProc">var</span> next-word-ah/<span class="Constant">edx</span>: (addr handle word) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> curr-word, next
<span id="L217" class="LineNr">217 </span> curr-word <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *next-word-ah
<span id="L218" class="LineNr">218 </span> <span class="muComment">#</span>
<span id="L219" class="LineNr">219 </span> <span class="PreProc">loop</span>
<span id="L220" class="LineNr">220 </span> <span class="Delimiter">}</span>
<span id="L221" class="LineNr">221 </span><span class="Delimiter">}</span>
</pre>
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