<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>Lava/Stable.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Lava</span><span class='hs-varop'>.</span><span class='hs-conid'>Stable</span> <span class='hs-keyword'>where</span> <a name="line-2"></a> <a name="line-3"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Lava</span><span class='hs-varop'>.</span><span class='hs-conid'>Signal</span> <a name="line-4"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Lava</span><span class='hs-varop'>.</span><span class='hs-conid'>Operators</span> <a name="line-5"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Lava</span><span class='hs-varop'>.</span><span class='hs-conid'>Generic</span> <a name="line-6"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Lava</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequent</span> <a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Lava</span><span class='hs-varop'>.</span><span class='hs-conid'>Ref</span> <a name="line-8"></a> <a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Lava</span><span class='hs-varop'>.</span><span class='hs-conid'>MyST</span> <a name="line-10"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>STRef</span> <a name="line-11"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newSTRef</span> <a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>readSTRef</span> <a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>writeSTRef</span> <a name="line-14"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>runST</span> <a name="line-15"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeInterleaveST</span> <a name="line-16"></a> <span class='hs-layout'>)</span> <a name="line-17"></a> <a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>List</span> <a name="line-19"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>isPrefixOf</span> <a name="line-20"></a> <span class='hs-layout'>)</span> <a name="line-21"></a> <a name="line-22"></a><span class='hs-comment'>----------------------------------------------------------------</span> <a name="line-23"></a><span class='hs-comment'>-- stable analysis</span> <a name="line-24"></a> <a name="line-25"></a><a name="stable"></a><span class='hs-definition'>stable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Generic</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Signal</span> <span class='hs-conid'>Bool</span> <a name="line-26"></a><span class='hs-definition'>stable</span> <span class='hs-varid'>inp</span> <span class='hs-keyglyph'>=</span> <a name="line-27"></a> <span class='hs-varid'>runST</span> <a name="line-28"></a> <span class='hs-layout'>(</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>table</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>tableST</span> <a name="line-29"></a> <span class='hs-varid'>stableRef</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-conid'>[]</span> <a name="line-30"></a> <a name="line-31"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>gather</span> <span class='hs-layout'>(</span><span class='hs-conid'>Symbol</span> <span class='hs-varid'>sym</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-32"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>findST</span> <span class='hs-varid'>table</span> <span class='hs-varid'>sym</span> <a name="line-33"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ms</span> <span class='hs-keyword'>of</span> <a name="line-34"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span> <a name="line-35"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>extendST</span> <span class='hs-varid'>table</span> <span class='hs-varid'>sym</span> <span class='hs-conid'>()</span> <a name="line-36"></a> <span class='hs-varid'>mmap</span> <span class='hs-varid'>gather</span> <span class='hs-layout'>(</span><span class='hs-varid'>deref</span> <span class='hs-varid'>sym</span><span class='hs-layout'>)</span> <a name="line-37"></a> <span class='hs-varid'>define</span> <span class='hs-layout'>(</span><span class='hs-conid'>Symbol</span> <span class='hs-varid'>sym</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>deref</span> <span class='hs-varid'>sym</span><span class='hs-layout'>)</span> <a name="line-38"></a> <a name="line-39"></a> <span class='hs-varid'>define</span> <span class='hs-varid'>out</span> <span class='hs-layout'>(</span><span class='hs-conid'>DelayBool</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>inn</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-40"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>addStable</span> <span class='hs-layout'>(</span><span class='hs-varid'>out</span> <span class='hs-varop'><==></span> <span class='hs-varid'>inn</span><span class='hs-layout'>)</span> <a name="line-41"></a> <a name="line-42"></a> <span class='hs-varid'>define</span> <span class='hs-varid'>out</span> <span class='hs-layout'>(</span><span class='hs-conid'>DelayInt</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>inn</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-43"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>addStable</span> <span class='hs-layout'>(</span><span class='hs-varid'>out</span> <span class='hs-varop'><==></span> <span class='hs-varid'>inn</span><span class='hs-layout'>)</span> <a name="line-44"></a> <a name="line-45"></a> <span class='hs-varid'>define</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <a name="line-46"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span> <a name="line-47"></a> <a name="line-48"></a> <span class='hs-varid'>addStable</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <a name="line-49"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>stables</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>stableRef</span> <a name="line-50"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>stableRef</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>stables</span><span class='hs-layout'>)</span> <a name="line-51"></a> <a name="line-52"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>mmap</span> <span class='hs-varid'>gather</span> <span class='hs-layout'>(</span><span class='hs-varid'>struct</span> <span class='hs-varid'>inp</span><span class='hs-layout'>)</span> <a name="line-53"></a> <a name="line-54"></a> <span class='hs-varid'>stables</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>stableRef</span> <a name="line-55"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>andl</span> <span class='hs-varid'>stables</span><span class='hs-layout'>)</span> <a name="line-56"></a> <span class='hs-layout'>)</span> <a name="line-57"></a> <a name="line-58"></a><span class='hs-comment'>----------------------------------------------------------------</span> <a name="line-59"></a><span class='hs-comment'>-- the end.</span> <a name="line-60"></a> </pre></body> </html>
