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diff --git a/html/same-fringe.mu.html b/html/same-fringe.mu.html new file mode 100644 index 00000000..94ebf67a --- /dev/null +++ b/html/same-fringe.mu.html @@ -0,0 +1,154 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - same-fringe.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v2"> +<meta name="syntax" content="none"> +<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; } +body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; } +a { color:#eeeeee; text-decoration: none; } +a:hover { text-decoration: underline; } +* { font-size: 12pt; font-size: 1em; } +.muRecipe { color: #ff8700; } +.Special { color: #c00000; } +.Conceal { color: #4e4e4e; } +.Delimiter { color: #800080; } +.Comment { color: #9090ff; } +.Comment a { color:#0000ee; text-decoration:underline; } +.Constant { color: #00a0a0; } +.LineNr { color: #444444; } +.muControl { color: #c0a020; } +.muData { color: #ffff00; } +--> +</style> + +<script type='text/javascript'> +<!-- + +/* function to open any folds containing a jumped-to line before jumping to it */ +function JumpToLine() +{ + var lineNum; + lineNum = window.location.hash; + lineNum = lineNum.substr(1); /* strip off '#' */ + + if (lineNum.indexOf('L') == -1) { + lineNum = 'L'+lineNum; + } + lineElem = document.getElementById(lineNum); + /* Always jump to new location even if the line was hidden inside a fold, or + * we corrected the raw number to a line ID. + */ + if (lineElem) { + lineElem.scrollIntoView(true); + } + return true; +} +if ('onhashchange' in window) { + window.onhashchange = JumpToLine; +} + +--> +</script> +</head> +<body onload='JumpToLine();'> +<pre id='vimCodeElement'> +<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Another example of continuations: the 'same fringe' problem:</span> +<span id="L2" class="LineNr"> 2 </span><span class="Comment"># <a href="http://wiki.c2.com/?SameFringeProblem">http://wiki.c2.com/?SameFringeProblem</a></span> +<span id="L3" class="LineNr"> 3 </span><span class="Comment">#</span> +<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Expected output:</span> +<span id="L5" class="LineNr"> 5 </span><span class="Comment"># 1</span> +<span id="L6" class="LineNr"> 6 </span><span class="Comment"># (i.e. that the two given trees x and y have the same leaves, in the same</span> +<span id="L7" class="LineNr"> 7 </span><span class="Comment"># order from left to right)</span> +<span id="L8" class="LineNr"> 8 </span> +<span id="L9" class="LineNr"> 9 </span><span class="muData">container</span> <a href='same-fringe.mu.html#L9'>tree</a>:_elem [ +<span id="L10" class="LineNr">10 </span> val:_elem +<span id="L11" class="LineNr">11 </span> left:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem +<span id="L12" class="LineNr">12 </span> right:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem +<span id="L13" class="LineNr">13 </span>] +<span id="L14" class="LineNr">14 </span> +<span id="L15" class="LineNr">15 </span><span class="muRecipe">def</span> <a href='same-fringe.mu.html#L15'>main</a> [ +<span id="L16" class="LineNr">16 </span> <span class="Constant">local-scope</span> +<span id="L17" class="LineNr">17 </span> <span class="Comment"># x: ((a b) c)</span> +<span id="L18" class="LineNr">18 </span> <span class="Comment"># y: (a (b c))</span> +<span id="L19" class="LineNr">19 </span> a:&:<a href='same-fringe.mu.html#L9'>tree</a>:num <span class="Special"><-</span> new-tree<span class="Constant"> 3</span> +<span id="L20" class="LineNr">20 </span> b:&:<a href='same-fringe.mu.html#L9'>tree</a>:num <span class="Special"><-</span> new-tree<span class="Constant"> 4</span> +<span id="L21" class="LineNr">21 </span> c:&:<a href='same-fringe.mu.html#L9'>tree</a>:num <span class="Special"><-</span> new-tree<span class="Constant"> 5</span> +<span id="L22" class="LineNr">22 </span> x1:&:<a href='same-fringe.mu.html#L9'>tree</a>:num <span class="Special"><-</span> new-tree a, b +<span id="L23" class="LineNr">23 </span> x:&:<a href='same-fringe.mu.html#L9'>tree</a>:num <span class="Special"><-</span> new-tree x1, c +<span id="L24" class="LineNr">24 </span> y1:&:<a href='same-fringe.mu.html#L9'>tree</a>:num <span class="Special"><-</span> new-tree b, c +<span id="L25" class="LineNr">25 </span> y:&:<a href='same-fringe.mu.html#L9'>tree</a>:num <span class="Special"><-</span> new-tree a, y1 +<span id="L26" class="LineNr">26 </span> result:bool <span class="Special"><-</span> <a href='same-fringe.mu.html#L30'>same-fringe</a> x, y +<span id="L27" class="LineNr">27 </span> $print result <span class="Constant">10/newline</span> +<span id="L28" class="LineNr">28 </span>] +<span id="L29" class="LineNr">29 </span> +<span id="L30" class="LineNr">30 </span><span class="muRecipe">def</span> <a href='same-fringe.mu.html#L30'>same-fringe</a> a:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem, b:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem<span class="muRecipe"> -> </span>result:bool [ +<span id="L31" class="LineNr">31 </span> <span class="Constant">local-scope</span> +<span id="L32" class="LineNr">32 </span> <span class="Constant">load-inputs</span> +<span id="L33" class="LineNr">33 </span> k1:continuation <span class="Special"><-</span> call-with-continuation-mark <a href='same-fringe.mu.html#L48'>process</a>, a +<span id="L34" class="LineNr">34 </span> k2:continuation <span class="Special"><-</span> call-with-continuation-mark <a href='same-fringe.mu.html#L48'>process</a>, b +<span id="L35" class="LineNr">35 </span> <span class="Delimiter">{</span> +<span id="L36" class="LineNr">36 </span> <span class="Conceal">¦</span> k1, x:_elem, a-done?:bool <span class="Special"><-</span> call k1 +<span id="L37" class="LineNr">37 </span> <span class="Conceal">¦</span> k2, y:_elem, b-done?:bool <span class="Special"><-</span> call k2 +<span id="L38" class="LineNr">38 </span> <span class="Conceal">¦</span> <span class="muControl">break-if</span> a-done? +<span id="L39" class="LineNr">39 </span> <span class="Conceal">¦</span> <span class="muControl">break-if</span> b-done? +<span id="L40" class="LineNr">40 </span> <span class="Conceal">¦</span> match?:bool <span class="Special"><-</span> equal x, y +<span id="L41" class="LineNr">41 </span> <span class="Conceal">¦</span> <span class="muControl">return-unless</span> match?, <span class="Constant">0/false</span> +<span id="L42" class="LineNr">42 </span> <span class="Conceal">¦</span> <span class="muControl">loop</span> +<span id="L43" class="LineNr">43 </span> <span class="Delimiter">}</span> +<span id="L44" class="LineNr">44 </span> result <span class="Special"><-</span> and a-done?, b-done? +<span id="L45" class="LineNr">45 </span>] +<span id="L46" class="LineNr">46 </span> +<span id="L47" class="LineNr">47 </span><span class="Comment"># harness around traversal</span> +<span id="L48" class="LineNr">48 </span><span class="muRecipe">def</span> <a href='same-fringe.mu.html#L48'>process</a> t:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem [ +<span id="L49" class="LineNr">49 </span> <span class="Constant">local-scope</span> +<span id="L50" class="LineNr">50 </span> <span class="Constant">load-inputs</span> +<span id="L51" class="LineNr">51 </span> return-continuation-until-mark <span class="Comment"># initial</span> +<span id="L52" class="LineNr">52 </span> <a href='same-fringe.mu.html#L59'>traverse</a> t +<span id="L53" class="LineNr">53 </span> zero-val:&:_elem <span class="Special"><-</span> new <span class="Constant">_elem:type</span> +<span id="L54" class="LineNr">54 </span> return-continuation-until-mark *zero-val, <span class="Constant">1/done</span> <span class="Comment"># final</span> +<span id="L55" class="LineNr">55 </span> assert <span class="Constant">0/false</span>, <span class="Constant">[continuation called past done]</span> +<span id="L56" class="LineNr">56 </span>] +<span id="L57" class="LineNr">57 </span> +<span id="L58" class="LineNr">58 </span><span class="Comment"># core traversal</span> +<span id="L59" class="LineNr">59 </span><span class="muRecipe">def</span> <a href='same-fringe.mu.html#L59'>traverse</a> t:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem [ +<span id="L60" class="LineNr">60 </span> <span class="Constant">local-scope</span> +<span id="L61" class="LineNr">61 </span> <span class="Constant">load-inputs</span> +<span id="L62" class="LineNr">62 </span> <span class="muControl">return-unless</span> t +<span id="L63" class="LineNr">63 </span> l:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem <span class="Special"><-</span> get *t, <span class="Constant">left:offset</span> +<span id="L64" class="LineNr">64 </span> <a href='same-fringe.mu.html#L59'>traverse</a> l +<span id="L65" class="LineNr">65 </span> r:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem <span class="Special"><-</span> get *t, <span class="Constant">right:offset</span> +<span id="L66" class="LineNr">66 </span> <a href='same-fringe.mu.html#L59'>traverse</a> r +<span id="L67" class="LineNr">67 </span> <span class="muControl">return-if</span> l +<span id="L68" class="LineNr">68 </span> <span class="muControl">return-if</span> r +<span id="L69" class="LineNr">69 </span> <span class="Comment"># leaf</span> +<span id="L70" class="LineNr">70 </span> v:_elem <span class="Special"><-</span> get *t, <span class="Constant">val:offset</span> +<span id="L71" class="LineNr">71 </span> return-continuation-until-mark v, <span class="Constant">0/not-done</span> +<span id="L72" class="LineNr">72 </span>] +<span id="L73" class="LineNr">73 </span> +<span id="L74" class="LineNr">74 </span><span class="Comment"># details</span> +<span id="L75" class="LineNr">75 </span> +<span id="L76" class="LineNr">76 </span><span class="muRecipe">def</span> new-tree x:_elem<span class="muRecipe"> -> </span>result:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem [ +<span id="L77" class="LineNr">77 </span> <span class="Constant">local-scope</span> +<span id="L78" class="LineNr">78 </span> <span class="Constant">load-inputs</span> +<span id="L79" class="LineNr">79 </span> result <span class="Special"><-</span> new <span class="Delimiter">{</span>(tree _elem): type<span class="Delimiter">}</span> +<span id="L80" class="LineNr">80 </span> put *result, <span class="Constant">val:offset</span>, x +<span id="L81" class="LineNr">81 </span>] +<span id="L82" class="LineNr">82 </span> +<span id="L83" class="LineNr">83 </span><span class="muRecipe">def</span> new-tree l:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem, r:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem<span class="muRecipe"> -> </span>result:&:<a href='same-fringe.mu.html#L9'>tree</a>:_elem [ +<span id="L84" class="LineNr">84 </span> <span class="Constant">local-scope</span> +<span id="L85" class="LineNr">85 </span> <span class="Constant">load-inputs</span> +<span id="L86" class="LineNr">86 </span> result <span class="Special"><-</span> new <span class="Delimiter">{</span>(tree _elem): type<span class="Delimiter">}</span> +<span id="L87" class="LineNr">87 </span> put *result, <span class="Constant">left:offset</span>, l +<span id="L88" class="LineNr">88 </span> put *result, <span class="Constant">right:offset</span>, r +<span id="L89" class="LineNr">89 </span>] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |