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<a href='https://github.com/akkartik/mu/blob/main/shell/parse.mu'>https://github.com/akkartik/mu/blob/main/shell/parse.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='parse.mu.html#L1'>parse-input</a></span> tokens: (addr stream <a href='cell.mu.html#L1'>cell</a>), out: (addr handle <a href='cell.mu.html#L1'>cell</a>), trace: (addr trace) <span class="Delimiter">{</span>
<span id="L2" class="LineNr"> 2 </span> <a href='../106stream.subx.html#L59'>rewind-stream</a> tokens
<span id="L3" class="LineNr"> 3 </span> <span class="PreProc">var</span> empty?/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='../309stream.subx.html#L6'>stream-empty?</a> tokens
<span id="L4" class="LineNr"> 4 </span> compare empty?, <span class="Constant">0</span>/false
<span id="L5" class="LineNr"> 5 </span> <span class="Delimiter">{</span>
<span id="L6" class="LineNr"> 6 </span> <span class="PreProc">break-if-=</span>
<span id="L7" class="LineNr"> 7 </span> <span class="Special"><a href='trace.mu.html#L110'>error</a></span> trace, <span class="Constant">"nothing to parse"</span>
<span id="L8" class="LineNr"> 8 </span> <span class="PreProc">return</span>
<span id="L9" class="LineNr"> 9 </span> <span class="Delimiter">}</span>
<span id="L10" class="LineNr"> 10 </span> <span class="PreProc">var</span> close-paren?/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='parse.mu.html#L26'>parse-sexpression</a> tokens, out, trace
<span id="L11" class="LineNr"> 11 </span> <span class="Delimiter">{</span>
<span id="L12" class="LineNr"> 12 </span> compare close-paren?, <span class="Constant">0</span>/false
<span id="L13" class="LineNr"> 13 </span> <span class="PreProc">break-if-=</span>
<span id="L14" class="LineNr"> 14 </span> <span class="Special"><a href='trace.mu.html#L110'>error</a></span> trace, <span class="Constant">"')' is not a valid expression"</span>
<span id="L15" class="LineNr"> 15 </span> <span class="PreProc">return</span>
<span id="L16" class="LineNr"> 16 </span> <span class="Delimiter">}</span>
<span id="L17" class="LineNr"> 17 </span> <span class="Delimiter">{</span>
<span id="L18" class="LineNr"> 18 </span> <span class="PreProc">var</span> empty?/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='../309stream.subx.html#L6'>stream-empty?</a> tokens
<span id="L19" class="LineNr"> 19 </span> compare empty?, <span class="Constant">0</span>/false
<span id="L20" class="LineNr"> 20 </span> <span class="PreProc">break-if-!=</span>
<span id="L21" class="LineNr"> 21 </span> <span class="Special"><a href='trace.mu.html#L110'>error</a></span> trace, <span class="Constant">"unexpected tokens at end; only type in a single expression at a time"</span>
<span id="L22" class="LineNr"> 22 </span> <span class="Delimiter">}</span>
<span id="L23" class="LineNr"> 23 </span><span class="Delimiter">}</span>
<span id="L24" class="LineNr"> 24 </span>
<span id="L25" class="LineNr"> 25 </span><span class="muComment"># return value: true if close-paren was encountered</span>
<span id="L26" class="LineNr"> 26 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='parse.mu.html#L26'>parse-sexpression</a></span> tokens: (addr stream <a href='cell.mu.html#L1'>cell</a>), _out: (addr handle <a href='cell.mu.html#L1'>cell</a>), trace: (addr trace)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: boolean <span class="Delimiter">{</span>
<span id="L27" class="LineNr"> 27 </span> <a href='trace.mu.html#L101'>trace-text</a> trace, <span class="Constant">"read"</span>, <span class="Constant">"parse"</span>
<span id="L28" class="LineNr"> 28 </span> <a href='trace.mu.html#L128'>trace-lower</a> trace
<span id="L29" class="LineNr"> 29 </span> <span class="PreProc">var</span> curr-token-storage: <a href='cell.mu.html#L1'>cell</a>
<span id="L30" class="LineNr"> 30 </span> <span class="PreProc">var</span> curr-token/<span class="Constant">ecx</span>: (addr <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> address curr-token-storage
<span id="L31" class="LineNr"> 31 </span> <span class="PreProc">var</span> empty?/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='../309stream.subx.html#L6'>stream-empty?</a> tokens
<span id="L32" class="LineNr"> 32 </span> compare empty?, <span class="Constant">0</span>/false
<span id="L33" class="LineNr"> 33 </span> <span class="Delimiter">{</span>
<span id="L34" class="LineNr"> 34 </span> <span class="PreProc">break-if-=</span>
<span id="L35" class="LineNr"> 35 </span> <span class="Special"><a href='trace.mu.html#L110'>error</a></span> trace, <span class="Constant">"end of stream; never found a balancing ')'"</span>
<span id="L36" class="LineNr"> 36 </span> <span class="PreProc">return</span> <span class="Constant">1</span>/true
<span id="L37" class="LineNr"> 37 </span> <span class="Delimiter">}</span>
<span id="L38" class="LineNr"> 38 </span> <a href='../309stream.subx.html#L107'>read-from-stream</a> tokens, curr-token
<span id="L39" class="LineNr"> 39 </span> $parse-sexpression:type-check: <span class="Delimiter">{</span>
<span id="L40" class="LineNr"> 40 </span> <span class="muComment"># not bracket -> parse atom</span>
<span id="L41" class="LineNr"> 41 </span> <span class="PreProc">var</span> <a href='tokenize.mu.html#L533'>bracket-token?</a>/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='tokenize.mu.html#L533'>bracket-token?</a> curr-token
<span id="L42" class="LineNr"> 42 </span> compare <a href='tokenize.mu.html#L533'>bracket-token?</a>, <span class="Constant">0</span>/false
<span id="L43" class="LineNr"> 43 </span> <span class="Delimiter">{</span>
<span id="L44" class="LineNr"> 44 </span> <span class="PreProc">break-if-!=</span>
<span id="L45" class="LineNr"> 45 </span> <a href='parse.mu.html#L91'>parse-atom</a> curr-token, _out, trace
<span id="L46" class="LineNr"> 46 </span> <span class="PreProc">break</span> $parse-sexpression:type-check
<span id="L47" class="LineNr"> 47 </span> <span class="Delimiter">}</span>
<span id="L48" class="LineNr"> 48 </span> <span class="muComment"># open paren -> parse list</span>
<span id="L49" class="LineNr"> 49 </span> <span class="PreProc">var</span> open-paren?/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='tokenize.mu.html#L543'>open-paren-token?</a> curr-token
<span id="L50" class="LineNr"> 50 </span> compare open-paren?, <span class="Constant">0</span>/false
<span id="L51" class="LineNr"> 51 </span> <span class="Delimiter">{</span>
<span id="L52" class="LineNr"> 52 </span> <span class="PreProc">break-if-=</span>
<span id="L53" class="LineNr"> 53 </span> <span class="PreProc">var</span> curr/<span class="Constant">esi</span>: (addr handle <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> copy _out
<span id="L54" class="LineNr"> 54 </span> $parse-sexpression:list-loop: <span class="Delimiter">{</span>
<span id="L55" class="LineNr"> 55 </span> <a href='cell.mu.html#L73'>allocate-pair</a> curr
<span id="L56" class="LineNr"> 56 </span> <span class="PreProc">var</span> curr-addr/<span class="Constant">eax</span>: (addr <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> <a href='../120allocate.subx.html#L226'>lookup</a> *curr
<span id="L57" class="LineNr"> 57 </span> <span class="PreProc">var</span> left/<span class="Constant">ecx</span>: (addr handle <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> get curr-addr, left
<span id="L58" class="LineNr"> 58 </span> <span class="Delimiter">{</span>
<span id="L59" class="LineNr"> 59 </span> <span class="PreProc">var</span> close-paren?/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='parse.mu.html#L26'>parse-sexpression</a> tokens, left, trace
<span id="L60" class="LineNr"> 60 </span> compare close-paren?, <span class="Constant">0</span>/false
<span id="L61" class="LineNr"> 61 </span> <span class="PreProc">break-if-!=</span> $parse-sexpression:list-loop
<span id="L62" class="LineNr"> 62 </span> <span class="Delimiter">}</span>
<span id="L63" class="LineNr"> 63 </span> <span class="muComment">#</span>
<span id="L64" class="LineNr"> 64 </span> curr <span class="Special"><-</span> get curr-addr, right
<span id="L65" class="LineNr"> 65 </span> <span class="PreProc">loop</span>
<span id="L66" class="LineNr"> 66 </span> <span class="Delimiter">}</span>
<span id="L67" class="LineNr"> 67 </span> <span class="PreProc">break</span> $parse-sexpression:type-check
<span id="L68" class="LineNr"> 68 </span> <span class="Delimiter">}</span>
<span id="L69" class="LineNr"> 69 </span> <span class="muComment"># close paren -> parse list</span>
<span id="L70" class="LineNr"> 70 </span> <span class="PreProc">var</span> close-paren?/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='tokenize.mu.html#L557'>close-paren-token?</a> curr-token
<span id="L71" class="LineNr"> 71 </span> compare close-paren?, <span class="Constant">0</span>/false
<span id="L72" class="LineNr"> 72 </span> <span class="Delimiter">{</span>
<span id="L73" class="LineNr"> 73 </span> <span class="PreProc">break-if-=</span>
<span id="L74" class="LineNr"> 74 </span> <a href='trace.mu.html#L136'>trace-higher</a> trace
<span id="L75" class="LineNr"> 75 </span> <span class="PreProc">return</span> <span class="Constant">1</span>/true
<span id="L76" class="LineNr"> 76 </span> <span class="Delimiter">}</span>
<span id="L77" class="LineNr"> 77 </span> <span class="muComment"># otherwise abort</span>
<span id="L78" class="LineNr"> 78 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x40</span>)
<span id="L79" class="LineNr"> 79 </span> <span class="PreProc">var</span> stream/<span class="Constant">edx</span>: (addr stream byte) <span class="Special"><-</span> address stream-storage
<span id="L80" class="LineNr"> 80 </span> <a href='../108write.subx.html#L11'>write</a> stream, <span class="Constant">"unexpected token "</span>
<span id="L81" class="LineNr"> 81 </span> <span class="PreProc">var</span> curr-token-data-ah/<span class="Constant">eax</span>: (addr handle stream byte) <span class="Special"><-</span> get curr-token, text-data
<span id="L82" class="LineNr"> 82 </span> <span class="PreProc">var</span> curr-token-data/<span class="Constant">eax</span>: (addr stream byte) <span class="Special"><-</span> <a href='../120allocate.subx.html#L226'>lookup</a> *curr-token-data-ah
<span id="L83" class="LineNr"> 83 </span> <a href='../106stream.subx.html#L59'>rewind-stream</a> curr-token-data
<span id="L84" class="LineNr"> 84 </span> <a href='../113write-stream.subx.html#L8'>write-stream</a> stream, curr-token-data
<span id="L85" class="LineNr"> 85 </span> trace trace, <span class="Constant">"error"</span>, stream
<span id="L86" class="LineNr"> 86 </span> <span class="Delimiter">}</span>
<span id="L87" class="LineNr"> 87 </span> <a href='trace.mu.html#L136'>trace-higher</a> trace
<span id="L88" class="LineNr"> 88 </span> <span class="PreProc">return</span> <span class="Constant">0</span>/false
<span id="L89" class="LineNr"> 89 </span><span class="Delimiter">}</span>
<span id="L90" class="LineNr"> 90 </span>
<span id="L91" class="LineNr"> 91 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='parse.mu.html#L91'>parse-atom</a></span> _curr-token: (addr <a href='cell.mu.html#L1'>cell</a>), _out: (addr handle <a href='cell.mu.html#L1'>cell</a>), trace: (addr trace) <span class="Delimiter">{</span>
<span id="L92" class="LineNr"> 92 </span> <a href='trace.mu.html#L101'>trace-text</a> trace, <span class="Constant">"read"</span>, <span class="Constant">"parse atom"</span>
<span id="L93" class="LineNr"> 93 </span> <span class="PreProc">var</span> curr-token/<span class="Constant">ecx</span>: (addr <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> copy _curr-token
<span id="L94" class="LineNr"> 94 </span> <span class="PreProc">var</span> curr-token-data-ah/<span class="Constant">eax</span>: (addr handle stream byte) <span class="Special"><-</span> get curr-token, text-data
<span id="L95" class="LineNr"> 95 </span> <span class="PreProc">var</span> _curr-token-data/<span class="Constant">eax</span>: (addr stream byte) <span class="Special"><-</span> <a href='../120allocate.subx.html#L226'>lookup</a> *curr-token-data-ah
<span id="L96" class="LineNr"> 96 </span> <span class="PreProc">var</span> curr-token-data/<span class="Constant">esi</span>: (addr stream byte) <span class="Special"><-</span> copy _curr-token-data
<span id="L97" class="LineNr"> 97 </span> trace trace, <span class="Constant">"read"</span>, curr-token-data
<span id="L98" class="LineNr"> 98 </span> <span class="muComment"># number</span>
<span id="L99" class="LineNr"> 99 </span> <span class="PreProc">var</span> <a href='tokenize.mu.html#L523'>number-token?</a>/<span class="Constant">eax</span>: boolean <span class="Special"><-</span> <a href='tokenize.mu.html#L523'>number-token?</a> curr-token
<span id="L100" class="LineNr">100 </span> compare <a href='tokenize.mu.html#L523'>number-token?</a>, <span class="Constant">0</span>/false
<span id="L101" class="LineNr">101 </span> <span class="Delimiter">{</span>
<span id="L102" class="LineNr">102 </span> <span class="PreProc">break-if-=</span>
<span id="L103" class="LineNr">103 </span> <a href='../106stream.subx.html#L59'>rewind-stream</a> curr-token-data
<span id="L104" class="LineNr">104 </span> <span class="PreProc">var</span> _val/<span class="Constant">eax</span>: int <span class="Special"><-</span> <a href='../311decimal-int.subx.html#L48'>parse-decimal-int-from-stream</a> curr-token-data
<span id="L105" class="LineNr">105 </span> <span class="PreProc">var</span> val/<span class="Constant">ecx</span>: int <span class="Special"><-</span> copy _val
<span id="L106" class="LineNr">106 </span> <span class="PreProc">var</span> val-float/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> convert val
<span id="L107" class="LineNr">107 </span> <a href='cell.mu.html#L39'>allocate-number</a> _out
<span id="L108" class="LineNr">108 </span> <span class="PreProc">var</span> out/<span class="Constant">eax</span>: (addr handle <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> copy _out
<span id="L109" class="LineNr">109 </span> <span class="PreProc">var</span> out-addr/<span class="Constant">eax</span>: (addr <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> <a href='../120allocate.subx.html#L226'>lookup</a> *out
<span id="L110" class="LineNr">110 </span> <span class="PreProc">var</span> dest/<span class="Constant">edi</span>: (addr float) <span class="Special"><-</span> get out-addr, number-data
<span id="L111" class="LineNr">111 </span> copy-to *dest, val-float
<span id="L112" class="LineNr">112 </span> <span class="Delimiter">{</span>
<span id="L113" class="LineNr">113 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x40</span>)
<span id="L114" class="LineNr">114 </span> <span class="PreProc">var</span> stream/<span class="Constant">ecx</span>: (addr stream byte) <span class="Special"><-</span> address stream-storage
<span id="L115" class="LineNr">115 </span> <a href='../108write.subx.html#L11'>write</a> stream, <span class="Constant">"=> number "</span>
<span id="L116" class="LineNr">116 </span> <a href='print.mu.html#L65'>print-number</a> out-addr, stream, <span class="Constant">0</span>/no-trace
<span id="L117" class="LineNr">117 </span> trace trace, <span class="Constant">"read"</span>, stream
<span id="L118" class="LineNr">118 </span> <span class="Delimiter">}</span>
<span id="L119" class="LineNr">119 </span> <span class="PreProc">return</span>
<span id="L120" class="LineNr">120 </span> <span class="Delimiter">}</span>
<span id="L121" class="LineNr">121 </span> <span class="muComment"># default: symbol</span>
<span id="L122" class="LineNr">122 </span> <span class="muComment"># just copy token data</span>
<span id="L123" class="LineNr">123 </span> <a href='cell.mu.html#L16'>allocate-symbol</a> _out
<span id="L124" class="LineNr">124 </span> <span class="PreProc">var</span> out/<span class="Constant">eax</span>: (addr handle <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> copy _out
<span id="L125" class="LineNr">125 </span> <span class="PreProc">var</span> out-addr/<span class="Constant">eax</span>: (addr <a href='cell.mu.html#L1'>cell</a>) <span class="Special"><-</span> <a href='../120allocate.subx.html#L226'>lookup</a> *out
<span id="L126" class="LineNr">126 </span> <span class="PreProc">var</span> curr-token-data-ah/<span class="Constant">ecx</span>: (addr handle stream byte) <span class="Special"><-</span> get curr-token, text-data
<span id="L127" class="LineNr">127 </span> <span class="PreProc">var</span> dest-ah/<span class="Constant">edx</span>: (addr handle stream byte) <span class="Special"><-</span> get out-addr, text-data
<span id="L128" class="LineNr">128 </span> copy-object curr-token-data-ah, dest-ah
<span id="L129" class="LineNr">129 </span> <span class="Delimiter">{</span>
<span id="L130" class="LineNr">130 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x40</span>)
<span id="L131" class="LineNr">131 </span> <span class="PreProc">var</span> stream/<span class="Constant">ecx</span>: (addr stream byte) <span class="Special"><-</span> address stream-storage
<span id="L132" class="LineNr">132 </span> <a href='../108write.subx.html#L11'>write</a> stream, <span class="Constant">"=> symbol "</span>
<span id="L133" class="LineNr">133 </span> <a href='print.mu.html#L48'>print-symbol</a> out-addr, stream, <span class="Constant">0</span>/no-trace
<span id="L134" class="LineNr">134 </span> trace trace, <span class="Constant">"read"</span>, stream
<span id="L135" class="LineNr">135 </span> <span class="Delimiter">}</span>
<span id="L136" class="LineNr">136 </span><span class="Delimiter">}</span>
</pre>
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