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<title>Mu - lambda-to-mu.mu</title>
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<a href='https://github.com/akkartik/mu/blob/master/lambda-to-mu.mu'>https://github.com/akkartik/mu/blob/master/lambda-to-mu.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="SalientComment">## experimental compiler to translate programs written in a generic</span>
<span id="L2" class="LineNr"> 2 </span><span class="SalientComment">## expression-oriented language called 'lambda' into Mu</span>
<span id="L3" class="LineNr"> 3 </span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment"># incomplete; code generator not done</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment"># potential enhancements:</span>
<span id="L6" class="LineNr"> 6 </span><span class="Comment"># symbol table</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment"># poor man's macros</span>
<span id="L8" class="LineNr"> 8 </span><span class="Comment"># substitute one instruction with multiple, parameterized by inputs and products</span>
<span id="L9" class="LineNr"> 9 </span>
<span id="L10" class="LineNr"> 10 </span><span class="muScenario">scenario</span> convert-lambda [
<span id="L11" class="LineNr"> 11 </span> run [
<span id="L12" class="LineNr"> 12 </span> <span class="Constant">local-scope</span>
<span id="L13" class="LineNr"> 13 </span> 1:text/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L22'>lambda-to-mu</a> <span class="Constant">[(add a (multiply b c))]</span>
<span id="L14" class="LineNr"> 14 </span> 2:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *1:text/<span class="Special">raw</span>
<span id="L15" class="LineNr"> 15 </span> ]
<span id="L16" class="LineNr"> 16 </span> memory-should-contain [
<span id="L17" class="LineNr"> 17 </span> 2:array:character <span class="Special"><-</span> <span class="Constant">[t1 <- multiply b c</span>
<span id="L18" class="LineNr"> 18 </span><span class="Constant">result <- add a t1]</span>
<span id="L19" class="LineNr"> 19 </span> ]
<span id="L20" class="LineNr"> 20 </span>]
<span id="L21" class="LineNr"> 21 </span>
<span id="L22" class="LineNr"> 22 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L22'>lambda-to-mu</a> in:text<span class="muRecipe"> -> </span>out:text [
<span id="L23" class="LineNr"> 23 </span> <span class="Constant">local-scope</span>
<span id="L24" class="LineNr"> 24 </span> <span class="Constant">load-inputs</span>
<span id="L25" class="LineNr"> 25 </span> out <span class="Special"><-</span> copy<span class="Constant"> null</span>
<span id="L26" class="LineNr"> 26 </span> cells:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse in
<span id="L27" class="LineNr"> 27 </span> out <span class="Special"><-</span> to-mu cells
<span id="L28" class="LineNr"> 28 </span>]
<span id="L29" class="LineNr"> 29 </span>
<span id="L30" class="LineNr"> 30 </span><span class="Comment"># 'parse' will turn lambda expressions into trees made of cells</span>
<span id="L31" class="LineNr"> 31 </span><span class="muData">exclusive-container</span> <a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L32" class="LineNr"> 32 </span> atom:text
<span id="L33" class="LineNr"> 33 </span> <a href='lambda-to-mu.mu.html#L37'>pair</a>:<a href='lambda-to-mu.mu.html#L37'>pair</a>
<span id="L34" class="LineNr"> 34 </span>]
<span id="L35" class="LineNr"> 35 </span>
<span id="L36" class="LineNr"> 36 </span><span class="Comment"># printed below as < first | rest ></span>
<span id="L37" class="LineNr"> 37 </span><span class="muData">container</span> <a href='lambda-to-mu.mu.html#L37'>pair</a> [
<span id="L38" class="LineNr"> 38 </span> first:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>
<span id="L39" class="LineNr"> 39 </span> rest:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>
<span id="L40" class="LineNr"> 40 </span>]
<span id="L41" class="LineNr"> 41 </span>
<span id="L42" class="LineNr"> 42 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L42'>new-atom</a> name:text<span class="muRecipe"> -> </span>result:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L43" class="LineNr"> 43 </span> <span class="Constant">local-scope</span>
<span id="L44" class="LineNr"> 44 </span> <span class="Constant">load-inputs</span>
<span id="L45" class="LineNr"> 45 </span> result <span class="Special"><-</span> new <span class="Constant"><a href='lambda-to-mu.mu.html#L31'>cell</a>:type</span>
<span id="L46" class="LineNr"> 46 </span> *result <span class="Special"><-</span> merge <span class="Constant">0/tag:atom</span>, name
<span id="L47" class="LineNr"> 47 </span>]
<span id="L48" class="LineNr"> 48 </span>
<span id="L49" class="LineNr"> 49 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L49'>new-pair</a> a:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, b:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>result:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L50" class="LineNr"> 50 </span> <span class="Constant">local-scope</span>
<span id="L51" class="LineNr"> 51 </span> <span class="Constant">load-inputs</span>
<span id="L52" class="LineNr"> 52 </span> result <span class="Special"><-</span> new <span class="Constant"><a href='lambda-to-mu.mu.html#L31'>cell</a>:type</span>
<span id="L53" class="LineNr"> 53 </span> *result <span class="Special"><-</span> merge <span class="Constant">1/tag:<a href='lambda-to-mu.mu.html#L37'>pair</a></span>, a/first, b/rest
<span id="L54" class="LineNr"> 54 </span>]
<span id="L55" class="LineNr"> 55 </span>
<span id="L56" class="LineNr"> 56 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L56'>is-atom?</a> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>result:bool [
<span id="L57" class="LineNr"> 57 </span> <span class="Constant">local-scope</span>
<span id="L58" class="LineNr"> 58 </span> <span class="Constant">load-inputs</span>
<span id="L59" class="LineNr"> 59 </span> <span class="muControl">return-unless</span> x,<span class="Constant"> false</span>
<span id="L60" class="LineNr"> 60 </span> _, result <span class="Special"><-</span> maybe-convert *x, <span class="Constant">atom:variant</span>
<span id="L61" class="LineNr"> 61 </span>]
<span id="L62" class="LineNr"> 62 </span>
<span id="L63" class="LineNr"> 63 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>result:bool [
<span id="L64" class="LineNr"> 64 </span> <span class="Constant">local-scope</span>
<span id="L65" class="LineNr"> 65 </span> <span class="Constant">load-inputs</span>
<span id="L66" class="LineNr"> 66 </span> <span class="muControl">return-unless</span> x,<span class="Constant"> false</span>
<span id="L67" class="LineNr"> 67 </span> _, result <span class="Special"><-</span> maybe-convert *x, <span class="Constant"><a href='lambda-to-mu.mu.html#L37'>pair</a>:variant</span>
<span id="L68" class="LineNr"> 68 </span>]
<span id="L69" class="LineNr"> 69 </span>
<span id="L70" class="LineNr"> 70 </span><span class="muScenario">scenario</span> atom-is-not-pair [
<span id="L71" class="LineNr"> 71 </span> <span class="Constant">local-scope</span>
<span id="L72" class="LineNr"> 72 </span> s:text <span class="Special"><-</span> new <span class="Constant">[a]</span>
<span id="L73" class="LineNr"> 73 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L42'>new-atom</a> s
<span id="L74" class="LineNr"> 74 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L56'>is-atom?</a> x
<span id="L75" class="LineNr"> 75 </span> 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L76" class="LineNr"> 76 </span> memory-should-contain [
<span id="L77" class="LineNr"> 77 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span>
<span id="L78" class="LineNr"> 78 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 0</span>
<span id="L79" class="LineNr"> 79 </span> ]
<span id="L80" class="LineNr"> 80 </span>]
<span id="L81" class="LineNr"> 81 </span>
<span id="L82" class="LineNr"> 82 </span><span class="muScenario">scenario</span> pair-is-not-atom [
<span id="L83" class="LineNr"> 83 </span> <span class="Constant">local-scope</span>
<span id="L84" class="LineNr"> 84 </span> <span class="Comment"># construct (a . nil)</span>
<span id="L85" class="LineNr"> 85 </span> s:text <span class="Special"><-</span> new <span class="Constant">[a]</span>
<span id="L86" class="LineNr"> 86 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L42'>new-atom</a> s
<span id="L87" class="LineNr"> 87 </span> y:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L49'>new-pair</a> x,<span class="Constant"> null</span>
<span id="L88" class="LineNr"> 88 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L56'>is-atom?</a> y
<span id="L89" class="LineNr"> 89 </span> 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> y
<span id="L90" class="LineNr"> 90 </span> memory-should-contain [
<span id="L91" class="LineNr"> 91 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 0</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span>
<span id="L93" class="LineNr"> 93 </span> ]
<span id="L94" class="LineNr"> 94 </span>]
<span id="L95" class="LineNr"> 95 </span>
<span id="L96" class="LineNr"> 96 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L96'>atom-match?</a> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, pat:text<span class="muRecipe"> -> </span>result:bool [
<span id="L97" class="LineNr"> 97 </span> <span class="Constant">local-scope</span>
<span id="L98" class="LineNr"> 98 </span> <span class="Constant">load-inputs</span>
<span id="L99" class="LineNr"> 99 </span> s:text, <a href='lambda-to-mu.mu.html#L56'>is-atom?</a>:bool <span class="Special"><-</span> maybe-convert *x, <span class="Constant">atom:variant</span>
<span id="L100" class="LineNr">100 </span> <span class="muControl">return-unless</span> <a href='lambda-to-mu.mu.html#L56'>is-atom?</a>,<span class="Constant"> false</span>
<span id="L101" class="LineNr">101 </span> result <span class="Special"><-</span> equal pat, s
<span id="L102" class="LineNr">102 </span>]
<span id="L103" class="LineNr">103 </span>
<span id="L104" class="LineNr">104 </span><span class="muScenario">scenario</span> atom-match [
<span id="L105" class="LineNr">105 </span> <span class="Constant">local-scope</span>
<span id="L106" class="LineNr">106 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L42'>new-atom</a> <span class="Constant">[abc]</span>
<span id="L107" class="LineNr">107 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L96'>atom-match?</a> x, <span class="Constant">[abc]</span>
<span id="L108" class="LineNr">108 </span> memory-should-contain [
<span id="L109" class="LineNr">109 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span>
<span id="L110" class="LineNr">110 </span> ]
<span id="L111" class="LineNr">111 </span>]
<span id="L112" class="LineNr">112 </span>
<span id="L113" class="LineNr">113 </span><span class="muRecipe">def</span> first x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>result:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L114" class="LineNr">114 </span> <span class="Constant">local-scope</span>
<span id="L115" class="LineNr">115 </span> <span class="Constant">load-inputs</span>
<span id="L116" class="LineNr">116 </span> <a href='lambda-to-mu.mu.html#L37'>pair</a>:<a href='lambda-to-mu.mu.html#L37'>pair</a>, pair?:bool <span class="Special"><-</span> maybe-convert *x, <span class="Constant"><a href='lambda-to-mu.mu.html#L37'>pair</a>:variant</span>
<span id="L117" class="LineNr">117 </span> <span class="muControl">return-unless</span> pair?,<span class="Constant"> null</span>
<span id="L118" class="LineNr">118 </span> result <span class="Special"><-</span> get <a href='lambda-to-mu.mu.html#L37'>pair</a>, <span class="Constant">first:offset</span>
<span id="L119" class="LineNr">119 </span>]
<span id="L120" class="LineNr">120 </span>
<span id="L121" class="LineNr">121 </span><span class="muRecipe">def</span> rest x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>result:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L122" class="LineNr">122 </span> <span class="Constant">local-scope</span>
<span id="L123" class="LineNr">123 </span> <span class="Constant">load-inputs</span>
<span id="L124" class="LineNr">124 </span> <a href='lambda-to-mu.mu.html#L37'>pair</a>:<a href='lambda-to-mu.mu.html#L37'>pair</a>, pair?:bool <span class="Special"><-</span> maybe-convert *x, <span class="Constant"><a href='lambda-to-mu.mu.html#L37'>pair</a>:variant</span>
<span id="L125" class="LineNr">125 </span> <span class="muControl">return-unless</span> pair?,<span class="Constant"> null</span>
<span id="L126" class="LineNr">126 </span> result <span class="Special"><-</span> get <a href='lambda-to-mu.mu.html#L37'>pair</a>, <span class="Constant">rest:offset</span>
<span id="L127" class="LineNr">127 </span>]
<span id="L128" class="LineNr">128 </span>
<span id="L129" class="LineNr">129 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L129'>set-first</a> base:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, new-first:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>base:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L130" class="LineNr">130 </span> <span class="Constant">local-scope</span>
<span id="L131" class="LineNr">131 </span> <span class="Constant">load-inputs</span>
<span id="L132" class="LineNr">132 </span> <a href='lambda-to-mu.mu.html#L37'>pair</a>:<a href='lambda-to-mu.mu.html#L37'>pair</a>, <a href='lambda-to-mu.mu.html#L63'>is-pair?</a>:bool <span class="Special"><-</span> maybe-convert *base, <span class="Constant"><a href='lambda-to-mu.mu.html#L37'>pair</a>:variant</span>
<span id="L133" class="LineNr">133 </span> <span class="muControl">return-unless</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a>
<span id="L134" class="LineNr">134 </span> <a href='lambda-to-mu.mu.html#L37'>pair</a> <span class="Special"><-</span> put <a href='lambda-to-mu.mu.html#L37'>pair</a>, <span class="Constant">first:offset</span>, new-first
<span id="L135" class="LineNr">135 </span> *base <span class="Special"><-</span> merge <span class="Constant">1/pair</span>, <a href='lambda-to-mu.mu.html#L37'>pair</a>
<span id="L136" class="LineNr">136 </span>]
<span id="L137" class="LineNr">137 </span>
<span id="L138" class="LineNr">138 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L138'>set-rest</a> base:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, new-rest:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>base:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L139" class="LineNr">139 </span> <span class="Constant">local-scope</span>
<span id="L140" class="LineNr">140 </span> <span class="Constant">load-inputs</span>
<span id="L141" class="LineNr">141 </span> <a href='lambda-to-mu.mu.html#L37'>pair</a>:<a href='lambda-to-mu.mu.html#L37'>pair</a>, <a href='lambda-to-mu.mu.html#L63'>is-pair?</a>:bool <span class="Special"><-</span> maybe-convert *base, <span class="Constant"><a href='lambda-to-mu.mu.html#L37'>pair</a>:variant</span>
<span id="L142" class="LineNr">142 </span> <span class="muControl">return-unless</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a>
<span id="L143" class="LineNr">143 </span> <a href='lambda-to-mu.mu.html#L37'>pair</a> <span class="Special"><-</span> put <a href='lambda-to-mu.mu.html#L37'>pair</a>, <span class="Constant">rest:offset</span>, new-rest
<span id="L144" class="LineNr">144 </span> *base <span class="Special"><-</span> merge <span class="Constant">1/pair</span>, <a href='lambda-to-mu.mu.html#L37'>pair</a>
<span id="L145" class="LineNr">145 </span>]
<span id="L146" class="LineNr">146 </span>
<span id="L147" class="LineNr">147 </span><span class="muScenario">scenario</span> cell-operations-on-atom [
<span id="L148" class="LineNr">148 </span> <span class="Constant">local-scope</span>
<span id="L149" class="LineNr">149 </span> s:text <span class="Special"><-</span> new <span class="Constant">[a]</span>
<span id="L150" class="LineNr">150 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L42'>new-atom</a> s
<span id="L151" class="LineNr">151 </span> 10:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> first x
<span id="L152" class="LineNr">152 </span> 11:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x
<span id="L153" class="LineNr">153 </span> memory-should-contain [
<span id="L154" class="LineNr">154 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># first is nil</span>
<span id="L155" class="LineNr">155 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># rest is nil</span>
<span id="L156" class="LineNr">156 </span> ]
<span id="L157" class="LineNr">157 </span>]
<span id="L158" class="LineNr">158 </span>
<span id="L159" class="LineNr">159 </span><span class="muScenario">scenario</span> cell-operations-on-pair [
<span id="L160" class="LineNr">160 </span> <span class="Constant">local-scope</span>
<span id="L161" class="LineNr">161 </span> <span class="Comment"># construct (a . nil)</span>
<span id="L162" class="LineNr">162 </span> s:text <span class="Special"><-</span> new <span class="Constant">[a]</span>
<span id="L163" class="LineNr">163 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L42'>new-atom</a> s
<span id="L164" class="LineNr">164 </span> y:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L49'>new-pair</a> x,<span class="Constant"> null</span>
<span id="L165" class="LineNr">165 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first y
<span id="L166" class="LineNr">166 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal x, x2
<span id="L167" class="LineNr">167 </span> 11:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest y
<span id="L168" class="LineNr">168 </span> memory-should-contain [
<span id="L169" class="LineNr">169 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># first is correct</span>
<span id="L170" class="LineNr">170 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># rest is nil</span>
<span id="L171" class="LineNr">171 </span> ]
<span id="L172" class="LineNr">172 </span>]
<span id="L173" class="LineNr">173 </span>
<span id="L174" class="LineNr">174 </span><span class="SalientComment">## convert lambda text to a tree of cells</span>
<span id="L175" class="LineNr">175 </span>
<span id="L176" class="LineNr">176 </span><span class="muRecipe">def</span> parse in:text<span class="muRecipe"> -> </span>out:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> [
<span id="L177" class="LineNr">177 </span> <span class="Constant">local-scope</span>
<span id="L178" class="LineNr">178 </span> <span class="Constant">load-inputs</span>
<span id="L179" class="LineNr">179 </span> s:&:<a href='066stream.mu.html#L2'>stream</a>:char <span class="Special"><-</span> <a href='066stream.mu.html#L7'>new-stream</a> in
<span id="L180" class="LineNr">180 </span> out, s <span class="Special"><-</span> parse s
<span id="L181" class="LineNr">181 </span> trace<span class="Constant"> 2</span>, <span class="Constant">[app/parse]</span>, out
<span id="L182" class="LineNr">182 </span>]
<span id="L183" class="LineNr">183 </span>
<span id="L184" class="LineNr">184 </span><span class="muRecipe">def</span> parse in:&:<a href='066stream.mu.html#L2'>stream</a>:char<span class="muRecipe"> -> </span>out:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, in:&:<a href='066stream.mu.html#L2'>stream</a>:char [
<span id="L185" class="LineNr">185 </span> <span class="Constant">local-scope</span>
<span id="L186" class="LineNr">186 </span> <span class="Constant">load-inputs</span>
<span id="L187" class="LineNr">187 </span> <span class="Comment"># skip whitespace</span>
<span id="L188" class="LineNr">188 </span> in <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L274'>skip-whitespace</a> in
<span id="L189" class="LineNr">189 </span> c:char, eof?:bool <span class="Special"><-</span> <a href='066stream.mu.html#L42'>peek</a> in
<span id="L190" class="LineNr">190 </span> <span class="muControl">return-if</span> eof?,<span class="Constant"> null</span>
<span id="L191" class="LineNr">191 </span> pair?:bool <span class="Special"><-</span> equal c, <span class="Constant">40/open-paren</span>
<span id="L192" class="LineNr">192 </span> <span class="Delimiter">{</span>
<span id="L193" class="LineNr">193 </span> <span class="muControl">break-if</span> pair?
<span id="L194" class="LineNr">194 </span> <span class="Comment"># atom</span>
<span id="L195" class="LineNr">195 </span> buf:&:<a href='061text.mu.html#L120'>buffer</a>:char <span class="Special"><-</span> <a href='061text.mu.html#L125'>new-buffer</a><span class="Constant"> 30</span>
<span id="L196" class="LineNr">196 </span> <span class="Delimiter">{</span>
<span id="L197" class="LineNr">197 </span> done?:bool <span class="Special"><-</span> <a href='066stream.mu.html#L72'>end-of-stream?</a> in
<span id="L198" class="LineNr">198 </span> <span class="muControl">break-if</span> done?
<span id="L199" class="LineNr">199 </span> <span class="Comment"># stop before close paren or space</span>
<span id="L200" class="LineNr">200 </span> c:char <span class="Special"><-</span> <a href='066stream.mu.html#L42'>peek</a> in
<span id="L201" class="LineNr">201 </span> done? <span class="Special"><-</span> equal c, <span class="Constant">41/close-paren</span>
<span id="L202" class="LineNr">202 </span> <span class="muControl">break-if</span> done?
<span id="L203" class="LineNr">203 </span> done? <span class="Special"><-</span> <a href='061text.mu.html#L634'>space?</a> c
<span id="L204" class="LineNr">204 </span> <span class="muControl">break-if</span> done?
<span id="L205" class="LineNr">205 </span> c <span class="Special"><-</span> read in
<span id="L206" class="LineNr">206 </span> buf <span class="Special"><-</span> append buf, c
<span id="L207" class="LineNr">207 </span> <span class="muControl"> loop</span>
<span id="L208" class="LineNr">208 </span> <span class="Delimiter">}</span>
<span id="L209" class="LineNr">209 </span> s:text <span class="Special"><-</span> <a href='061text.mu.html#L338'>buffer-to-array</a> buf
<span id="L210" class="LineNr">210 </span> out <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L42'>new-atom</a> s
<span id="L211" class="LineNr">211 </span> <span class="Delimiter">}</span>
<span id="L212" class="LineNr">212 </span> <span class="Delimiter">{</span>
<span id="L213" class="LineNr">213 </span> <span class="muControl">break-unless</span> pair?
<span id="L214" class="LineNr">214 </span> <span class="Comment"># pair</span>
<span id="L215" class="LineNr">215 </span> read in <span class="Comment"># skip the open-paren</span>
<span id="L216" class="LineNr">216 </span> out <span class="Special"><-</span> new <span class="Constant"><a href='lambda-to-mu.mu.html#L31'>cell</a>:type</span> <span class="Comment"># start out with nil</span>
<span id="L217" class="LineNr">217 </span> <span class="Comment"># read in first element of pair</span>
<span id="L218" class="LineNr">218 </span> <span class="Delimiter">{</span>
<span id="L219" class="LineNr">219 </span> end?:bool <span class="Special"><-</span> <a href='066stream.mu.html#L72'>end-of-stream?</a> in
<span id="L220" class="LineNr">220 </span> not-end?:bool <span class="Special"><-</span> not end?
<span id="L221" class="LineNr">221 </span> assert not-end?, <span class="Constant">[unbalanced '(' in expression]</span>
<span id="L222" class="LineNr">222 </span> c <span class="Special"><-</span> <a href='066stream.mu.html#L42'>peek</a> in
<span id="L223" class="LineNr">223 </span> close-paren?:bool <span class="Special"><-</span> equal c, <span class="Constant">41/close-paren</span>
<span id="L224" class="LineNr">224 </span> <span class="muControl">break-if</span> close-paren?
<span id="L225" class="LineNr">225 </span> first:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, in <span class="Special"><-</span> parse in
<span id="L226" class="LineNr">226 </span> *out <span class="Special"><-</span> merge <span class="Constant">1/pair</span>, first,<span class="Constant"> null</span>
<span id="L227" class="LineNr">227 </span> <span class="Delimiter">}</span>
<span id="L228" class="LineNr">228 </span> <span class="Comment"># read in any remaining elements</span>
<span id="L229" class="LineNr">229 </span> curr:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> copy out
<span id="L230" class="LineNr">230 </span> <span class="Delimiter">{</span>
<span id="L231" class="LineNr">231 </span> in <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L274'>skip-whitespace</a> in
<span id="L232" class="LineNr">232 </span> end?:bool <span class="Special"><-</span> <a href='066stream.mu.html#L72'>end-of-stream?</a> in
<span id="L233" class="LineNr">233 </span> not-end?:bool <span class="Special"><-</span> not end?
<span id="L234" class="LineNr">234 </span> assert not-end?, <span class="Constant">[unbalanced '(' in expression]</span>
<span id="L235" class="LineNr">235 </span> <span class="Comment"># termination check: ')'</span>
<span id="L236" class="LineNr">236 </span> c <span class="Special"><-</span> <a href='066stream.mu.html#L42'>peek</a> in
<span id="L237" class="LineNr">237 </span> <span class="Delimiter">{</span>
<span id="L238" class="LineNr">238 </span> close-paren?:bool <span class="Special"><-</span> equal c, <span class="Constant">41/close-paren</span>
<span id="L239" class="LineNr">239 </span> <span class="muControl">break-unless</span> close-paren?
<span id="L240" class="LineNr">240 </span> read in <span class="Comment"># skip ')'</span>
<span id="L241" class="LineNr">241 </span> <span class="muControl"> break</span> <span class="Constant">+end-pair</span>
<span id="L242" class="LineNr">242 </span> <span class="Delimiter">}</span>
<span id="L243" class="LineNr">243 </span> <span class="Comment"># still here? read next element of pair</span>
<span id="L244" class="LineNr">244 </span> <a href='065duplex_list.mu.html#L31'>next</a>:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, in <span class="Special"><-</span> parse in
<span id="L245" class="LineNr">245 </span> is-dot?:bool <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L96'>atom-match?</a> <a href='065duplex_list.mu.html#L31'>next</a>, <span class="Constant">[.]</span>
<span id="L246" class="LineNr">246 </span> <span class="Delimiter">{</span>
<span id="L247" class="LineNr">247 </span> <span class="muControl">break-if</span> is-dot?
<span id="L248" class="LineNr">248 </span> next-curr:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L49'>new-pair</a> <a href='065duplex_list.mu.html#L31'>next</a>,<span class="Constant"> null</span>
<span id="L249" class="LineNr">249 </span> curr <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L138'>set-rest</a> curr, next-curr
<span id="L250" class="LineNr">250 </span> curr <span class="Special"><-</span> rest curr
<span id="L251" class="LineNr">251 </span> <span class="Delimiter">}</span>
<span id="L252" class="LineNr">252 </span> <span class="Delimiter">{</span>
<span id="L253" class="LineNr">253 </span> <span class="muControl">break-unless</span> is-dot?
<span id="L254" class="LineNr">254 </span> <span class="Comment"># deal with dotted pair</span>
<span id="L255" class="LineNr">255 </span> in <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L274'>skip-whitespace</a> in
<span id="L256" class="LineNr">256 </span> c <span class="Special"><-</span> <a href='066stream.mu.html#L42'>peek</a> in
<span id="L257" class="LineNr">257 </span> not-close-paren?:bool <span class="Special"><-</span> not-equal c, <span class="Constant">41/close-paren</span>
<span id="L258" class="LineNr">258 </span> assert not-close-paren?, <span class="Constant">[')' cannot immediately follow '.']</span>
<span id="L259" class="LineNr">259 </span> final:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse in
<span id="L260" class="LineNr">260 </span> curr <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L138'>set-rest</a> curr, final
<span id="L261" class="LineNr">261 </span> <span class="Comment"># we're not gonna update curr, so better make sure the next iteration</span>
<span id="L262" class="LineNr">262 </span> <span class="Comment"># is going to end the pair</span>
<span id="L263" class="LineNr">263 </span> in <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L274'>skip-whitespace</a> in
<span id="L264" class="LineNr">264 </span> c <span class="Special"><-</span> <a href='066stream.mu.html#L42'>peek</a> in
<span id="L265" class="LineNr">265 </span> close-paren?:bool <span class="Special"><-</span> equal c, <span class="Constant">41/close-paren</span>
<span id="L266" class="LineNr">266 </span> assert close-paren?, <span class="Constant">['.' must be followed by exactly one expression before ')']</span>
<span id="L267" class="LineNr">267 </span> <span class="Delimiter">}</span>
<span id="L268" class="LineNr">268 </span> <span class="muControl"> loop</span>
<span id="L269" class="LineNr">269 </span> <span class="Delimiter">}</span>
<span id="L270" class="LineNr">270 </span><span class="Constant"> +end-pair</span>
<span id="L271" class="LineNr">271 </span> <span class="Delimiter">}</span>
<span id="L272" class="LineNr">272 </span>]
<span id="L273" class="LineNr">273 </span>
<span id="L274" class="LineNr">274 </span><span class="muRecipe">def</span> <a href='lambda-to-mu.mu.html#L274'>skip-whitespace</a> in:&:<a href='066stream.mu.html#L2'>stream</a>:char<span class="muRecipe"> -> </span>in:&:<a href='066stream.mu.html#L2'>stream</a>:char [
<span id="L275" class="LineNr">275 </span> <span class="Constant">local-scope</span>
<span id="L276" class="LineNr">276 </span> <span class="Constant">load-inputs</span>
<span id="L277" class="LineNr">277 </span> <span class="Delimiter">{</span>
<span id="L278" class="LineNr">278 </span> done?:bool <span class="Special"><-</span> <a href='066stream.mu.html#L72'>end-of-stream?</a> in
<span id="L279" class="LineNr">279 </span> <span class="muControl">return-if</span> done?,<span class="Constant"> null</span>
<span id="L280" class="LineNr">280 </span> c:char <span class="Special"><-</span> <a href='066stream.mu.html#L42'>peek</a> in
<span id="L281" class="LineNr">281 </span> <a href='061text.mu.html#L634'>space?</a>:bool <span class="Special"><-</span> <a href='061text.mu.html#L634'>space?</a> c
<span id="L282" class="LineNr">282 </span> <span class="muControl">break-unless</span> <a href='061text.mu.html#L634'>space?</a>
<span id="L283" class="LineNr">283 </span> read in <span class="Comment"># skip</span>
<span id="L284" class="LineNr">284 </span> <span class="muControl"> loop</span>
<span id="L285" class="LineNr">285 </span> <span class="Delimiter">}</span>
<span id="L286" class="LineNr">286 </span>]
<span id="L287" class="LineNr">287 </span>
<span id="L288" class="LineNr">288 </span><span class="muRecipe">def</span> to-text x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>out:text [
<span id="L289" class="LineNr">289 </span> <span class="Constant">local-scope</span>
<span id="L290" class="LineNr">290 </span> <span class="Constant">load-inputs</span>
<span id="L291" class="LineNr">291 </span> buf:&:<a href='061text.mu.html#L120'>buffer</a>:char <span class="Special"><-</span> <a href='061text.mu.html#L125'>new-buffer</a><span class="Constant"> 30</span>
<span id="L292" class="LineNr">292 </span> buf <span class="Special"><-</span> to-buffer x, buf
<span id="L293" class="LineNr">293 </span> out <span class="Special"><-</span> <a href='061text.mu.html#L338'>buffer-to-array</a> buf
<span id="L294" class="LineNr">294 </span>]
<span id="L295" class="LineNr">295 </span>
<span id="L296" class="LineNr">296 </span><span class="muRecipe">def</span> to-buffer x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, buf:&:<a href='061text.mu.html#L120'>buffer</a>:char<span class="muRecipe"> -> </span>buf:&:<a href='061text.mu.html#L120'>buffer</a>:char [
<span id="L297" class="LineNr">297 </span> <span class="Constant">local-scope</span>
<span id="L298" class="LineNr">298 </span> <span class="Constant">load-inputs</span>
<span id="L299" class="LineNr">299 </span> <span class="Comment"># base case: empty cell</span>
<span id="L300" class="LineNr">300 </span> <span class="Delimiter">{</span>
<span id="L301" class="LineNr">301 </span> <span class="muControl">break-if</span> x
<span id="L302" class="LineNr">302 </span> buf <span class="Special"><-</span> append buf, <span class="Constant">[<>]</span>
<span id="L303" class="LineNr">303 </span> <span class="muControl"> return</span>
<span id="L304" class="LineNr">304 </span> <span class="Delimiter">}</span>
<span id="L305" class="LineNr">305 </span> <span class="Comment"># base case: atom</span>
<span id="L306" class="LineNr">306 </span> <span class="Delimiter">{</span>
<span id="L307" class="LineNr">307 </span> s:text, atom?:bool <span class="Special"><-</span> maybe-convert *x, <span class="Constant">atom:variant</span>
<span id="L308" class="LineNr">308 </span> <span class="muControl">break-unless</span> atom?
<span id="L309" class="LineNr">309 </span> buf <span class="Special"><-</span> append buf, s
<span id="L310" class="LineNr">310 </span> <span class="muControl"> return</span>
<span id="L311" class="LineNr">311 </span> <span class="Delimiter">}</span>
<span id="L312" class="LineNr">312 </span> <span class="Comment"># recursive case: pair</span>
<span id="L313" class="LineNr">313 </span> buf <span class="Special"><-</span> append buf, <span class="Constant">[< ]</span>
<span id="L314" class="LineNr">314 </span> first:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L315" class="LineNr">315 </span> buf <span class="Special"><-</span> to-buffer first, buf
<span id="L316" class="LineNr">316 </span> buf <span class="Special"><-</span> append buf, <span class="Constant">[ | ]</span>
<span id="L317" class="LineNr">317 </span> rest:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x
<span id="L318" class="LineNr">318 </span> buf <span class="Special"><-</span> to-buffer rest, buf
<span id="L319" class="LineNr">319 </span> buf <span class="Special"><-</span> append buf, <span class="Constant">[ >]</span>
<span id="L320" class="LineNr">320 </span>]
<span id="L321" class="LineNr">321 </span>
<span id="L322" class="LineNr">322 </span><span class="muScenario">scenario</span> parse-single-letter-atom [
<span id="L323" class="LineNr">323 </span> <span class="Constant">local-scope</span>
<span id="L324" class="LineNr">324 </span> s:text <span class="Special"><-</span> new <span class="Constant">[a]</span>
<span id="L325" class="LineNr">325 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L326" class="LineNr">326 </span> s2:text, 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x, <span class="Constant">atom:variant</span>
<span id="L327" class="LineNr">327 </span> 11:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L328" class="LineNr">328 </span> memory-should-contain [
<span id="L329" class="LineNr">329 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is an atom</span>
<span id="L330" class="LineNr">330 </span> 11:array:character <span class="Special"><-</span> <span class="Constant">[a]</span>
<span id="L331" class="LineNr">331 </span> ]
<span id="L332" class="LineNr">332 </span>]
<span id="L333" class="LineNr">333 </span>
<span id="L334" class="LineNr">334 </span><span class="muScenario">scenario</span> parse-atom [
<span id="L335" class="LineNr">335 </span> <span class="Constant">local-scope</span>
<span id="L336" class="LineNr">336 </span> s:text <span class="Special"><-</span> new <span class="Constant">[abc]</span>
<span id="L337" class="LineNr">337 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L338" class="LineNr">338 </span> s2:text, 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x, <span class="Constant">atom:variant</span>
<span id="L339" class="LineNr">339 </span> 11:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L340" class="LineNr">340 </span> memory-should-contain [
<span id="L341" class="LineNr">341 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is an atom</span>
<span id="L342" class="LineNr">342 </span> 11:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span>
<span id="L343" class="LineNr">343 </span> ]
<span id="L344" class="LineNr">344 </span>]
<span id="L345" class="LineNr">345 </span>
<span id="L346" class="LineNr">346 </span><span class="muScenario">scenario</span> parse-list-of-two-atoms [
<span id="L347" class="LineNr">347 </span> <span class="Constant">local-scope</span>
<span id="L348" class="LineNr">348 </span> s:text <span class="Special"><-</span> new <span class="Constant">[(abc def)]</span>
<span id="L349" class="LineNr">349 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L350" class="LineNr">350 </span> trace-should-contain [
<span id="L351" class="LineNr">351 </span> app/parse: <span class="Constant"><</span> abc <span class="Constant">|</span> <span class="Constant"><</span> def <span class="Constant">|</span> <span class="Constant"><></span> <span class="Constant">></span> <span class="Constant">></span>
<span id="L352" class="LineNr">352 </span> ]
<span id="L353" class="LineNr">353 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L354" class="LineNr">354 </span> x1:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L355" class="LineNr">355 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x
<span id="L356" class="LineNr">356 </span> s1:text, 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x1, <span class="Constant">atom:variant</span>
<span id="L357" class="LineNr">357 </span> 12:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x2
<span id="L358" class="LineNr">358 </span> x3:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x2
<span id="L359" class="LineNr">359 </span> s2:text, 13:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x3, <span class="Constant">atom:variant</span>
<span id="L360" class="LineNr">360 </span> 14:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x2
<span id="L361" class="LineNr">361 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s1
<span id="L362" class="LineNr">362 </span> 30:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L363" class="LineNr">363 </span> memory-should-contain [
<span id="L364" class="LineNr">364 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is a pair</span>
<span id="L365" class="LineNr">365 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first is an atom</span>
<span id="L366" class="LineNr">366 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest is a pair</span>
<span id="L367" class="LineNr">367 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.first is an atom</span>
<span id="L368" class="LineNr">368 </span> <span class="Constant"> 14</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># result.rest.rest is nil</span>
<span id="L369" class="LineNr">369 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span> <span class="Comment"># result.first</span>
<span id="L370" class="LineNr">370 </span> 30:array:character <span class="Special"><-</span> <span class="Constant">[def]</span> <span class="Comment"># result.rest.first</span>
<span id="L371" class="LineNr">371 </span> ]
<span id="L372" class="LineNr">372 </span>]
<span id="L373" class="LineNr">373 </span>
<span id="L374" class="LineNr">374 </span><span class="muScenario">scenario</span> parse-list-with-extra-spaces [
<span id="L375" class="LineNr">375 </span> <span class="Constant">local-scope</span>
<span id="L376" class="LineNr">376 </span> s:text <span class="Special"><-</span> new <span class="Constant">[ ( abc def ) ]</span> <span class="Comment"># extra spaces</span>
<span id="L377" class="LineNr">377 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L378" class="LineNr">378 </span> trace-should-contain [
<span id="L379" class="LineNr">379 </span> app/parse: <span class="Constant"><</span> abc <span class="Constant">|</span> <span class="Constant"><</span> def <span class="Constant">|</span> <span class="Constant"><></span> <span class="Constant">></span> <span class="Constant">></span>
<span id="L380" class="LineNr">380 </span> ]
<span id="L381" class="LineNr">381 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L382" class="LineNr">382 </span> x1:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L383" class="LineNr">383 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x
<span id="L384" class="LineNr">384 </span> s1:text, 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x1, <span class="Constant">atom:variant</span>
<span id="L385" class="LineNr">385 </span> 12:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x2
<span id="L386" class="LineNr">386 </span> x3:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x2
<span id="L387" class="LineNr">387 </span> s2:text, 13:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x3, <span class="Constant">atom:variant</span>
<span id="L388" class="LineNr">388 </span> 14:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x2
<span id="L389" class="LineNr">389 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s1
<span id="L390" class="LineNr">390 </span> 30:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L391" class="LineNr">391 </span> memory-should-contain [
<span id="L392" class="LineNr">392 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is a pair</span>
<span id="L393" class="LineNr">393 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first is an atom</span>
<span id="L394" class="LineNr">394 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest is a pair</span>
<span id="L395" class="LineNr">395 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.first is an atom</span>
<span id="L396" class="LineNr">396 </span> <span class="Constant"> 14</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># result.rest.rest is nil</span>
<span id="L397" class="LineNr">397 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span> <span class="Comment"># result.first</span>
<span id="L398" class="LineNr">398 </span> 30:array:character <span class="Special"><-</span> <span class="Constant">[def]</span> <span class="Comment"># result.rest.first</span>
<span id="L399" class="LineNr">399 </span> ]
<span id="L400" class="LineNr">400 </span>]
<span id="L401" class="LineNr">401 </span>
<span id="L402" class="LineNr">402 </span><span class="muScenario">scenario</span> parse-list-of-more-than-two-atoms [
<span id="L403" class="LineNr">403 </span> <span class="Constant">local-scope</span>
<span id="L404" class="LineNr">404 </span> s:text <span class="Special"><-</span> new <span class="Constant">[(abc def ghi)]</span>
<span id="L405" class="LineNr">405 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L406" class="LineNr">406 </span> trace-should-contain [
<span id="L407" class="LineNr">407 </span> app/parse: <span class="Constant"><</span> abc <span class="Constant">|</span> <span class="Constant"><</span> def <span class="Constant">|</span> <span class="Constant"><</span> ghi <span class="Constant">|</span> <span class="Constant"><></span> <span class="Constant">></span> <span class="Constant">></span> <span class="Constant">></span>
<span id="L408" class="LineNr">408 </span> ]
<span id="L409" class="LineNr">409 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L410" class="LineNr">410 </span> x1:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L411" class="LineNr">411 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x
<span id="L412" class="LineNr">412 </span> s1:text, 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x1, <span class="Constant">atom:variant</span>
<span id="L413" class="LineNr">413 </span> 12:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x2
<span id="L414" class="LineNr">414 </span> x3:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x2
<span id="L415" class="LineNr">415 </span> s2:text, 13:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x3, <span class="Constant">atom:variant</span>
<span id="L416" class="LineNr">416 </span> x4:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x2
<span id="L417" class="LineNr">417 </span> 14:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x4
<span id="L418" class="LineNr">418 </span> x5:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x4
<span id="L419" class="LineNr">419 </span> s3:text, 15:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x5, <span class="Constant">atom:variant</span>
<span id="L420" class="LineNr">420 </span> 16:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x4
<span id="L421" class="LineNr">421 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s1
<span id="L422" class="LineNr">422 </span> 30:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L423" class="LineNr">423 </span> 40:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s3
<span id="L424" class="LineNr">424 </span> memory-should-contain [
<span id="L425" class="LineNr">425 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is a pair</span>
<span id="L426" class="LineNr">426 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first is an atom</span>
<span id="L427" class="LineNr">427 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest is a pair</span>
<span id="L428" class="LineNr">428 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.first is an atom</span>
<span id="L429" class="LineNr">429 </span> <span class="Constant"> 14</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.rest is a pair</span>
<span id="L430" class="LineNr">430 </span> <span class="Constant"> 15</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.rest.first is an atom</span>
<span id="L431" class="LineNr">431 </span> <span class="Constant"> 16</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># result.rest.rest.rest is nil</span>
<span id="L432" class="LineNr">432 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span> <span class="Comment"># result.first</span>
<span id="L433" class="LineNr">433 </span> 30:array:character <span class="Special"><-</span> <span class="Constant">[def]</span> <span class="Comment"># result.rest.first</span>
<span id="L434" class="LineNr">434 </span> 40:array:character <span class="Special"><-</span> <span class="Constant">[ghi]</span> <span class="Comment"># result.rest.rest</span>
<span id="L435" class="LineNr">435 </span> ]
<span id="L436" class="LineNr">436 </span>]
<span id="L437" class="LineNr">437 </span>
<span id="L438" class="LineNr">438 </span><span class="muScenario">scenario</span> parse-nested-list [
<span id="L439" class="LineNr">439 </span> <span class="Constant">local-scope</span>
<span id="L440" class="LineNr">440 </span> s:text <span class="Special"><-</span> new <span class="Constant">[((abc))]</span>
<span id="L441" class="LineNr">441 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L442" class="LineNr">442 </span> trace-should-contain [
<span id="L443" class="LineNr">443 </span> app/parse: <span class="Constant"><</span> <span class="Constant"><</span> abc <span class="Constant">|</span> <span class="Constant"><></span> <span class="Constant">></span> <span class="Constant">|</span> <span class="Constant"><></span> <span class="Constant">></span>
<span id="L444" class="LineNr">444 </span> ]
<span id="L445" class="LineNr">445 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L446" class="LineNr">446 </span> x1:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L447" class="LineNr">447 </span> 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L448" class="LineNr">448 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x1
<span id="L449" class="LineNr">449 </span> s1:text, 12:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x2, <span class="Constant">atom:variant</span>
<span id="L450" class="LineNr">450 </span> 13:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x1
<span id="L451" class="LineNr">451 </span> 14:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x
<span id="L452" class="LineNr">452 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s1
<span id="L453" class="LineNr">453 </span> memory-should-contain [
<span id="L454" class="LineNr">454 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is a pair</span>
<span id="L455" class="LineNr">455 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first is a pair</span>
<span id="L456" class="LineNr">456 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first.first is an atom</span>
<span id="L457" class="LineNr">457 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># result.first.rest is nil</span>
<span id="L458" class="LineNr">458 </span> <span class="Constant"> 14</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># result.rest is nil</span>
<span id="L459" class="LineNr">459 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span> <span class="Comment"># result.first.first</span>
<span id="L460" class="LineNr">460 </span> ]
<span id="L461" class="LineNr">461 </span>]
<span id="L462" class="LineNr">462 </span>
<span id="L463" class="LineNr">463 </span><span class="muScenario">scenario</span> parse-nested-list-2 [
<span id="L464" class="LineNr">464 </span> <span class="Constant">local-scope</span>
<span id="L465" class="LineNr">465 </span> s:text <span class="Special"><-</span> new <span class="Constant">[((abc) def)]</span>
<span id="L466" class="LineNr">466 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L467" class="LineNr">467 </span> trace-should-contain [
<span id="L468" class="LineNr">468 </span> app/parse: <span class="Constant"><</span> <span class="Constant"><</span> abc <span class="Constant">|</span> <span class="Constant"><></span> <span class="Constant">></span> <span class="Constant">|</span> <span class="Constant"><</span> def <span class="Constant">|</span> <span class="Constant"><></span> <span class="Constant">></span> <span class="Constant">></span>
<span id="L469" class="LineNr">469 </span> ]
<span id="L470" class="LineNr">470 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L471" class="LineNr">471 </span> x1:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L472" class="LineNr">472 </span> 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L473" class="LineNr">473 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x1
<span id="L474" class="LineNr">474 </span> s1:text, 12:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x2, <span class="Constant">atom:variant</span>
<span id="L475" class="LineNr">475 </span> 13:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x1
<span id="L476" class="LineNr">476 </span> x3:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x
<span id="L477" class="LineNr">477 </span> x4:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x3
<span id="L478" class="LineNr">478 </span> s2:text, 14:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x4, <span class="Constant">atom:variant</span>
<span id="L479" class="LineNr">479 </span> 15:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>/<span class="Special">raw</span> <span class="Special"><-</span> rest x3
<span id="L480" class="LineNr">480 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s1
<span id="L481" class="LineNr">481 </span> 30:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L482" class="LineNr">482 </span> memory-should-contain [
<span id="L483" class="LineNr">483 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is a pair</span>
<span id="L484" class="LineNr">484 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first is a pair</span>
<span id="L485" class="LineNr">485 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first.first is an atom</span>
<span id="L486" class="LineNr">486 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># result.first.rest is nil</span>
<span id="L487" class="LineNr">487 </span> <span class="Constant"> 14</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.first is an atom</span>
<span id="L488" class="LineNr">488 </span> <span class="Constant"> 15</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># result.rest.rest is nil</span>
<span id="L489" class="LineNr">489 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span> <span class="Comment"># result.first.first</span>
<span id="L490" class="LineNr">490 </span> 30:array:character <span class="Special"><-</span> <span class="Constant">[def]</span> <span class="Comment"># result.rest.first</span>
<span id="L491" class="LineNr">491 </span> ]
<span id="L492" class="LineNr">492 </span>]
<span id="L493" class="LineNr">493 </span>
<span id="L494" class="LineNr">494 </span><span class="Comment"># todo: uncomment these tests after we figure out how to continue tests after</span>
<span id="L495" class="LineNr">495 </span><span class="Comment"># assertion failures</span>
<span id="L496" class="LineNr">496 </span><span class="CommentedCode">#? scenario parse-error [</span>
<span id="L497" class="LineNr">497 </span><span class="CommentedCode">#? local-scope</span>
<span id="L498" class="LineNr">498 </span><span class="CommentedCode">#? s:text <- new [(]</span>
<span id="L499" class="LineNr">499 </span><span class="CommentedCode">#? #? hide-errors</span>
<span id="L500" class="LineNr">500 </span><span class="CommentedCode">#? x:&:cell <- parse s</span>
<span id="L501" class="LineNr">501 </span><span class="CommentedCode">#? #? show-errors</span>
<span id="L502" class="LineNr">502 </span><span class="CommentedCode">#? trace-should-contain [</span>
<span id="L503" class="LineNr">503 </span><span class="CommentedCode">#? error: unbalanced '(' in expression</span>
<span id="L504" class="LineNr">504 </span><span class="CommentedCode">#? ]</span>
<span id="L505" class="LineNr">505 </span><span class="CommentedCode">#? ]</span>
<span id="L506" class="LineNr">506 </span><span class="CommentedCode">#? </span>
<span id="L507" class="LineNr">507 </span><span class="CommentedCode">#? scenario parse-error-after-element [</span>
<span id="L508" class="LineNr">508 </span><span class="CommentedCode">#? local-scope</span>
<span id="L509" class="LineNr">509 </span><span class="CommentedCode">#? s:text <- new [(abc]</span>
<span id="L510" class="LineNr">510 </span><span class="CommentedCode">#? #? hide-errors</span>
<span id="L511" class="LineNr">511 </span><span class="CommentedCode">#? x:&:cell <- parse s</span>
<span id="L512" class="LineNr">512 </span><span class="CommentedCode">#? #? show-errors</span>
<span id="L513" class="LineNr">513 </span><span class="CommentedCode">#? trace-should-contain [</span>
<span id="L514" class="LineNr">514 </span><span class="CommentedCode">#? error: unbalanced '(' in expression</span>
<span id="L515" class="LineNr">515 </span><span class="CommentedCode">#? ]</span>
<span id="L516" class="LineNr">516 </span><span class="CommentedCode">#? ]</span>
<span id="L517" class="LineNr">517 </span>
<span id="L518" class="LineNr">518 </span><span class="muScenario">scenario</span> parse-dotted-list-of-two-atoms [
<span id="L519" class="LineNr">519 </span> <span class="Constant">local-scope</span>
<span id="L520" class="LineNr">520 </span> s:text <span class="Special"><-</span> new <span class="Constant">[(abc . def)]</span>
<span id="L521" class="LineNr">521 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L522" class="LineNr">522 </span> trace-should-contain [
<span id="L523" class="LineNr">523 </span> app/parse: <span class="Constant"><</span> abc <span class="Constant">|</span> def <span class="Constant">></span>
<span id="L524" class="LineNr">524 </span> ]
<span id="L525" class="LineNr">525 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L526" class="LineNr">526 </span> x1:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L527" class="LineNr">527 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x
<span id="L528" class="LineNr">528 </span> s1:text, 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x1, <span class="Constant">atom:variant</span>
<span id="L529" class="LineNr">529 </span> s2:text, 12:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x2, <span class="Constant">atom:variant</span>
<span id="L530" class="LineNr">530 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s1
<span id="L531" class="LineNr">531 </span> 30:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L532" class="LineNr">532 </span> memory-should-contain [
<span id="L533" class="LineNr">533 </span> <span class="Comment"># parses to < abc | def ></span>
<span id="L534" class="LineNr">534 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is a pair</span>
<span id="L535" class="LineNr">535 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first is an atom</span>
<span id="L536" class="LineNr">536 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest is an atom</span>
<span id="L537" class="LineNr">537 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span> <span class="Comment"># result.first</span>
<span id="L538" class="LineNr">538 </span> 30:array:character <span class="Special"><-</span> <span class="Constant">[def]</span> <span class="Comment"># result.rest</span>
<span id="L539" class="LineNr">539 </span> ]
<span id="L540" class="LineNr">540 </span>]
<span id="L541" class="LineNr">541 </span>
<span id="L542" class="LineNr">542 </span><span class="muScenario">scenario</span> parse-dotted-list-of-more-than-two-atoms [
<span id="L543" class="LineNr">543 </span> <span class="Constant">local-scope</span>
<span id="L544" class="LineNr">544 </span> s:text <span class="Special"><-</span> new <span class="Constant">[(abc def . ghi)]</span>
<span id="L545" class="LineNr">545 </span> x:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> parse s
<span id="L546" class="LineNr">546 </span> trace-should-contain [
<span id="L547" class="LineNr">547 </span> app/parse: <span class="Constant"><</span> abc <span class="Constant">|</span> <span class="Constant"><</span> def <span class="Constant">|</span> ghi <span class="Constant">></span> <span class="Constant">></span>
<span id="L548" class="LineNr">548 </span> ]
<span id="L549" class="LineNr">549 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x
<span id="L550" class="LineNr">550 </span> x1:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x
<span id="L551" class="LineNr">551 </span> x2:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x
<span id="L552" class="LineNr">552 </span> s1:text, 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x1, <span class="Constant">atom:variant</span>
<span id="L553" class="LineNr">553 </span> 12:bool/<span class="Special">raw</span> <span class="Special"><-</span> <a href='lambda-to-mu.mu.html#L63'>is-pair?</a> x2
<span id="L554" class="LineNr">554 </span> x3:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> first x2
<span id="L555" class="LineNr">555 </span> s2:text, 13:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x3, <span class="Constant">atom:variant</span>
<span id="L556" class="LineNr">556 </span> x4:&:<a href='lambda-to-mu.mu.html#L31'>cell</a> <span class="Special"><-</span> rest x2
<span id="L557" class="LineNr">557 </span> s3:text, 14:bool/<span class="Special">raw</span> <span class="Special"><-</span> maybe-convert *x4, <span class="Constant">atom:variant</span>
<span id="L558" class="LineNr">558 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s1
<span id="L559" class="LineNr">559 </span> 30:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s2
<span id="L560" class="LineNr">560 </span> 40:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *s3
<span id="L561" class="LineNr">561 </span> memory-should-contain [
<span id="L562" class="LineNr">562 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># parse result is a pair</span>
<span id="L563" class="LineNr">563 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.first is an atom</span>
<span id="L564" class="LineNr">564 </span> <span class="Constant"> 12</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest is a pair</span>
<span id="L565" class="LineNr">565 </span> <span class="Constant"> 13</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.first is an atom</span>
<span id="L566" class="LineNr">566 </span> <span class="Constant"> 14</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># result.rest.rest is an atom</span>
<span id="L567" class="LineNr">567 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span> <span class="Comment"># result.first</span>
<span id="L568" class="LineNr">568 </span> 30:array:character <span class="Special"><-</span> <span class="Constant">[def]</span> <span class="Comment"># result.rest.first</span>
<span id="L569" class="LineNr">569 </span> 40:array:character <span class="Special"><-</span> <span class="Constant">[ghi]</span> <span class="Comment"># result.rest.rest</span>
<span id="L570" class="LineNr">570 </span> ]
<span id="L571" class="LineNr">571 </span>]
<span id="L572" class="LineNr">572 </span>
<span id="L573" class="LineNr">573 </span><span class="SalientComment">## convert tree of cells to Mu text</span>
<span id="L574" class="LineNr">574 </span>
<span id="L575" class="LineNr">575 </span><span class="muRecipe">def</span> to-mu in:&:<a href='lambda-to-mu.mu.html#L31'>cell</a><span class="muRecipe"> -> </span>out:text [
<span id="L576" class="LineNr">576 </span> <span class="Constant">local-scope</span>
<span id="L577" class="LineNr">577 </span> <span class="Constant">load-inputs</span>
<span id="L578" class="LineNr">578 </span> buf:&:<a href='061text.mu.html#L120'>buffer</a>:char <span class="Special"><-</span> <a href='061text.mu.html#L125'>new-buffer</a><span class="Constant"> 30</span>
<span id="L579" class="LineNr">579 </span> buf <span class="Special"><-</span> to-mu in, buf
<span id="L580" class="LineNr">580 </span> out <span class="Special"><-</span> <a href='061text.mu.html#L338'>buffer-to-array</a> buf
<span id="L581" class="LineNr">581 </span>]
<span id="L582" class="LineNr">582 </span>
<span id="L583" class="LineNr">583 </span><span class="muRecipe">def</span> to-mu in:&:<a href='lambda-to-mu.mu.html#L31'>cell</a>, buf:&:<a href='061text.mu.html#L120'>buffer</a>:char<span class="muRecipe"> -> </span>buf:&:<a href='061text.mu.html#L120'>buffer</a>:char, result-name:text [
<span id="L584" class="LineNr">584 </span> <span class="Constant">local-scope</span>
<span id="L585" class="LineNr">585 </span> <span class="Constant">load-inputs</span>
<span id="L586" class="LineNr">586 </span> <span class="Comment"># null cell? no change.</span>
<span id="L587" class="LineNr">587 </span> <span class="Comment"># pair with all atoms? gensym a new variable</span>
<span id="L588" class="LineNr">588 </span> <span class="Comment"># pair containing other pairs? recurse</span>
<span id="L589" class="LineNr">589 </span> result-name <span class="Special"><-</span> copy<span class="Constant"> null</span>
<span id="L590" class="LineNr">590 </span>]
</pre>
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