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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE ScopedTypeVariables #-}</span>
<a name="line-2"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : ForSyDe.Backend.Simulate</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) SAM Group, KTH/ICT/ECS 2007-2008</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>-- </span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : forsyde-dev@ict.kth.se</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : non-portable (Template Haskell, LSTV)</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This module provides the simulation backend of ForSyDe's embedded compiler</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-- /This module is based on Lava2000/: <<a href="http://www.cs.chalmers.se/~koen/Lava/">http://www.cs.chalmers.se/~koen/Lava/</a>></span>
<a name="line-15"></a><span class='hs-comment'>--</span>
<a name="line-16"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-17"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Backend</span><span class='hs-varop'>.</span><span class='hs-conid'>Simulate</span> <span class='hs-layout'>(</span><span class='hs-varid'>simulate</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>OSharing</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Netlist</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Netlist</span><span class='hs-varop'>.</span><span class='hs-conid'>Traverse</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>SysDef</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>SysFun</span><span class='hs-layout'>(</span><span class='hs-conid'>SysFunToSimFun</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>ForSyDeErr</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Process</span><span class='hs-varop'>.</span><span class='hs-conid'>ProcVal</span>
<a name="line-26"></a>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromJust</span><span class='hs-layout'>)</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>STRef</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>DT</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>transpose</span><span class='hs-layout'>)</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Dynamic</span>
<a name="line-33"></a>
<a name="line-34"></a><a name="simulate"></a><span class='hs-comment'>-- | 'simulate' takes a system definition and generates a function </span>
<a name="line-35"></a><span class='hs-comment'>-- able simulate a System using a list-based representation </span>
<a name="line-36"></a><span class='hs-comment'>-- of its signals.</span>
<a name="line-37"></a><span class='hs-definition'>simulate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SysFunToSimFun</span> <span class='hs-varid'>sysFun</span> <span class='hs-varid'>simFun</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>SysDef</span> <span class='hs-varid'>sysFun</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>simFun</span>
<a name="line-38"></a><span class='hs-definition'>simulate</span> <span class='hs-varid'>sysDef</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromDynSimFun</span> <span class='hs-layout'>(</span><span class='hs-varid'>simulateDyn</span> <span class='hs-layout'>(</span><span class='hs-varid'>unSysDef</span> <span class='hs-varid'>sysDef</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
<a name="line-39"></a>
<a name="line-40"></a><span class='hs-comment'>-- FIXME: clean and document the following horrible code!</span>
<a name="line-41"></a>
<a name="line-42"></a><span class='hs-comment'>--------------------------------------</span>
<a name="line-43"></a><span class='hs-comment'>-- The following was adapted from Lava</span>
<a name="line-44"></a><span class='hs-comment'>--------------------------------------</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="Var"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Var</span> <span class='hs-varid'>s</span>
<a name="line-47"></a> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>STRef</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Dynamic</span><span class='hs-layout'>,</span> <span class='hs-conid'>STRef</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>Wire</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-48"></a>
<a name="line-49"></a><a name="Wire"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Wire</span> <span class='hs-varid'>s</span>
<a name="line-50"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Wire</span>
<a name="line-51"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>dependencies</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Var</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>]</span>
<a name="line-52"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>kick</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-53"></a> <span class='hs-layout'>}</span>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-comment'>----------------------------------------------------------------</span>
<a name="line-56"></a><span class='hs-comment'>-- simulateDyn</span>
<a name="line-57"></a>
<a name="line-58"></a>
<a name="line-59"></a><a name="simulateDyn"></a><span class='hs-definition'>simulateDyn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimSysDef</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Dynamic</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Dynamic</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-60"></a><span class='hs-definition'>simulateDyn</span> <span class='hs-varid'>pSysDef</span> <span class='hs-varid'>inps</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>any</span> <span class='hs-varid'>null</span> <span class='hs-varid'>inps</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>replicate</span> <span class='hs-varid'>outN</span> <span class='hs-conid'>[]</span>
<a name="line-61"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>outN</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varop'>.</span> <span class='hs-varid'>oIface</span> <span class='hs-varop'>.</span> <span class='hs-varid'>readURef</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unPrimSysDef</span><span class='hs-layout'>)</span> <span class='hs-varid'>pSysDef</span>
<a name="line-62"></a><span class='hs-definition'>simulateDyn</span> <span class='hs-varid'>pSysDef</span> <span class='hs-varid'>inps</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runST</span> <span class='hs-layout'>(</span>
<a name="line-63"></a> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>sysDefVal</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>readURef</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unPrimSysDef</span><span class='hs-layout'>)</span> <span class='hs-varid'>pSysDef</span>
<a name="line-64"></a> <span class='hs-varid'>sysDefInIface</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iIface</span> <span class='hs-varid'>sysDefVal</span>
<a name="line-65"></a> <span class='hs-comment'>-- List where to store the Vars generated by delay processes</span>
<a name="line-66"></a> <span class='hs-varid'>roots</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-conid'>[]</span>
<a name="line-67"></a> <span class='hs-comment'>-- Input port ids paired with a reference to each input value list</span>
<a name="line-68"></a> <span class='hs-varid'>inpPairs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>zipWithM</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>id</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>inputL</span> <span class='hs-keyglyph'>-></span>
<a name="line-69"></a> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>ref</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-varid'>inputL</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>id</span><span class='hs-layout'>,</span><span class='hs-varid'>ref</span><span class='hs-layout'>)</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-70"></a> <span class='hs-varid'>sysDefInIface</span> <span class='hs-varid'>inps</span>
<a name="line-71"></a>
<a name="line-72"></a> <span class='hs-keyword'>let</span> <span class='hs-comment'>-- Add a Var to the roots list </span>
<a name="line-73"></a> <span class='hs-varid'>root</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span>
<a name="line-74"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>rs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>roots</span>
<a name="line-75"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>roots</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-conop'>:</span><span class='hs-varid'>rs</span><span class='hs-layout'>)</span>
<a name="line-76"></a>
<a name="line-77"></a> <span class='hs-comment'>-- Create an empty var</span>
<a name="line-78"></a> <span class='hs-varid'>empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>rval</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"val?"</span><span class='hs-layout'>)</span>
<a name="line-79"></a> <span class='hs-varid'>rwir</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"wire?"</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>rval</span><span class='hs-layout'>,</span> <span class='hs-varid'>rwir</span><span class='hs-layout'>)</span>
<a name="line-81"></a> <span class='hs-varid'>new</span> <span class='hs-varid'>node</span> <span class='hs-keyglyph'>=</span>
<a name="line-82"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>tag</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>empty</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>tag</span><span class='hs-layout'>,</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>outTags</span> <span class='hs-varid'>node</span><span class='hs-layout'>)</span>
<a name="line-83"></a> <span class='hs-varid'>newInstance</span> <span class='hs-varid'>varPairs</span> <span class='hs-varid'>node</span> <span class='hs-keyglyph'>=</span>
<a name="line-84"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>funName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"ForSyDe.Backend.Simulate.simulateDyn"</span>
<a name="line-85"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>node</span> <span class='hs-keyword'>of</span>
<a name="line-86"></a> <span class='hs-conid'>InPort</span> <span class='hs-varid'>id</span> <span class='hs-keyglyph'>-></span>
<a name="line-87"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>id</span> <span class='hs-varid'>varPairs</span> <span class='hs-keyword'>of</span>
<a name="line-88"></a> <span class='hs-comment'>-- FIXME: replace the Other error with a custom one</span>
<a name="line-89"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>intError</span> <span class='hs-varid'>funName</span> <span class='hs-layout'>(</span><span class='hs-conid'>Other</span> <span class='hs-str'>"inconsistency"</span><span class='hs-layout'>)</span>
<a name="line-90"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>var</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>InPortOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>var</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-91"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>new</span> <span class='hs-varid'>node</span>
<a name="line-92"></a>
<a name="line-93"></a> <span class='hs-comment'>-- define for the general traversal</span>
<a name="line-94"></a> <span class='hs-varid'>define</span> <span class='hs-varid'>nodeVarPairs</span> <span class='hs-varid'>childVars</span> <span class='hs-keyglyph'>=</span>
<a name="line-95"></a> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>nodeVarPairs</span><span class='hs-layout'>,</span><span class='hs-varid'>childVars</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-96"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>InPortOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>var</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>InPort</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-97"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>inputRef</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromJust</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>name</span> <span class='hs-varid'>inpPairs</span>
<a name="line-98"></a> <span class='hs-varid'>relate</span> <span class='hs-varid'>var</span> <span class='hs-conid'>[]</span> <span class='hs-varop'>$</span>
<a name="line-99"></a> <span class='hs-keyword'>do</span> <span class='hs-layout'>(</span><span class='hs-varid'>curr</span><span class='hs-conop'>:</span><span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>inputRef</span>
<a name="line-100"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>inputRef</span> <span class='hs-varid'>rest</span>
<a name="line-101"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>curr</span>
<a name="line-102"></a>
<a name="line-103"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>defineShared</span> <span class='hs-varid'>nodeVarPairs</span> <span class='hs-varid'>childVars</span>
<a name="line-104"></a>
<a name="line-105"></a> <span class='hs-comment'>-- define for instances</span>
<a name="line-106"></a> <span class='hs-varid'>defineInstance</span> <span class='hs-varid'>nodeVarPairs</span> <span class='hs-varid'>childVars</span> <span class='hs-keyglyph'>=</span>
<a name="line-107"></a> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>nodeVarPairs</span><span class='hs-layout'>,</span><span class='hs-varid'>childVars</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-108"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>InPortOut</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>InPort</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-109"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>defineShared</span> <span class='hs-varid'>nodeVarPairs</span> <span class='hs-varid'>childVars</span>
<a name="line-110"></a>
<a name="line-111"></a> <span class='hs-comment'>-- Shared part of define define for instances and the main traversal</span>
<a name="line-112"></a> <span class='hs-varid'>defineShared</span> <span class='hs-varid'>nodeVarPairs</span> <span class='hs-varid'>childVars</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-- r s =</span>
<a name="line-113"></a> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>nodeVarPairs</span><span class='hs-layout'>,</span><span class='hs-varid'>childVars</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-114"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>InPortOut</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>InPort</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-115"></a>
<a name="line-116"></a> <span class='hs-layout'>(</span><span class='hs-varid'>nodeVarPairs</span><span class='hs-layout'>,</span>
<a name="line-117"></a> <span class='hs-conid'>Proc</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>SysIns</span> <span class='hs-varid'>pSysDef</span> <span class='hs-varid'>ins</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-118"></a> <span class='hs-comment'>-- FIXME: ugly ugly ugly</span>
<a name="line-119"></a> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>sysDefVal</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>readURef</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unPrimSysDef</span><span class='hs-layout'>)</span> <span class='hs-varid'>pSysDef</span>
<a name="line-120"></a> <span class='hs-varid'>taggedIns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>id</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>var</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>id</span><span class='hs-layout'>,</span><span class='hs-varid'>var</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-121"></a> <span class='hs-layout'>(</span><span class='hs-varid'>iIface</span> <span class='hs-varid'>sysDefVal</span><span class='hs-layout'>)</span> <span class='hs-varid'>ins</span>
<a name="line-122"></a> <span class='hs-varid'>sr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>traverseST</span>
<a name="line-123"></a> <span class='hs-layout'>(</span><span class='hs-varid'>newInstance</span> <span class='hs-varid'>taggedIns</span><span class='hs-layout'>)</span>
<a name="line-124"></a> <span class='hs-varid'>defineInstance</span>
<a name="line-125"></a> <span class='hs-layout'>(</span><span class='hs-varid'>netlist</span> <span class='hs-varid'>sysDefVal</span><span class='hs-layout'>)</span>
<a name="line-126"></a>
<a name="line-127"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>relateIns</span> <span class='hs-varid'>prevVar</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>prevValR</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>nextVar</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-128"></a> <span class='hs-varid'>relate</span> <span class='hs-varid'>nextVar</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>prevVar</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-varid'>readSTRef</span> <span class='hs-varid'>prevValR</span><span class='hs-layout'>)</span>
<a name="line-129"></a>
<a name="line-130"></a> <span class='hs-varid'>zipWithM_</span> <span class='hs-varid'>relateIns</span> <span class='hs-varid'>sr</span> <span class='hs-varid'>nodeVarPairs</span>
<a name="line-131"></a>
<a name="line-132"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>DelaySYOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>nodeVar</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-133"></a> <span class='hs-conid'>Proc</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>DelaySY</span> <span class='hs-layout'>(</span><span class='hs-conid'>ProcVal</span> <span class='hs-varid'>init</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>sigVar</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-134"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>valVar</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>empty</span>
<a name="line-135"></a> <span class='hs-varid'>relate</span> <span class='hs-varid'>valVar</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-varid'>init</span><span class='hs-layout'>)</span>
<a name="line-136"></a> <span class='hs-varid'>delay</span> <span class='hs-varid'>nodeVar</span> <span class='hs-varid'>valVar</span> <span class='hs-varid'>sigVar</span>
<a name="line-137"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span>
<a name="line-138"></a> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>evalPairs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>eval</span> <span class='hs-varop'>`fmap`</span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>readSTRef</span><span class='hs-varop'>.</span><span class='hs-varid'>fst</span><span class='hs-layout'>)</span> <span class='hs-varid'>childVars</span>
<a name="line-139"></a> <span class='hs-varid'>args</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>arguments</span> <span class='hs-varid'>childVars</span>
<a name="line-140"></a> <span class='hs-varid'>relEval</span> <span class='hs-layout'>(</span><span class='hs-varid'>tag</span><span class='hs-layout'>,</span> <span class='hs-varid'>var</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-141"></a> <span class='hs-varid'>relate</span> <span class='hs-varid'>var</span> <span class='hs-varid'>args</span> <span class='hs-varop'>$</span>
<a name="line-142"></a> <span class='hs-comment'>-- FIXME: remove fromJust and write a proper error</span>
<a name="line-143"></a> <span class='hs-varid'>liftM</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromJust</span><span class='hs-varop'>.</span><span class='hs-layout'>(</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>evalPairs</span>
<a name="line-144"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>relEval</span> <span class='hs-varid'>nodeVarPairs</span>
<a name="line-145"></a> <span class='hs-keyword'>where</span>
<a name="line-146"></a> <span class='hs-varid'>delay</span> <span class='hs-varid'>r</span> <span class='hs-varid'>ri</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>rinit</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>r1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>pre</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-147"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>state</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-conid'>Nothing</span>
<a name="line-148"></a> <span class='hs-varid'>r2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>empty</span>
<a name="line-149"></a> <span class='hs-varid'>root</span> <span class='hs-varid'>r2</span>
<a name="line-150"></a>
<a name="line-151"></a> <span class='hs-varid'>relate</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>ri</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>$</span>
<a name="line-152"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>state</span>
<a name="line-153"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ms</span> <span class='hs-keyword'>of</span>
<a name="line-154"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span>
<a name="line-155"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span>
<a name="line-156"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>rinit</span>
<a name="line-157"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>state</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-158"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span>
<a name="line-159"></a>
<a name="line-160"></a> <span class='hs-varid'>relate</span> <span class='hs-varid'>r2</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span><span class='hs-varid'>r1</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>$</span>
<a name="line-161"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>pre</span>
<a name="line-162"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>state</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-163"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span>
<a name="line-164"></a>
<a name="line-165"></a> <span class='hs-varid'>sr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>traverseST</span> <span class='hs-varid'>new</span> <span class='hs-varid'>define</span> <span class='hs-layout'>(</span><span class='hs-varid'>netlist</span> <span class='hs-varid'>sysDefVal</span><span class='hs-layout'>)</span>
<a name="line-166"></a> <span class='hs-varid'>rs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>roots</span>
<a name="line-167"></a> <span class='hs-comment'>-- remove tags of the resulting vars (all the root nodes should only</span>
<a name="line-168"></a> <span class='hs-comment'>-- have one output and thus a must return a unique list)</span>
<a name="line-169"></a> <span class='hs-varid'>step</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>drive</span> <span class='hs-layout'>(</span><span class='hs-varid'>sr</span> <span class='hs-varop'>++</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span>
<a name="line-170"></a>
<a name="line-171"></a> <span class='hs-varid'>outs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lazyloop</span> <span class='hs-varop'>$</span>
<a name="line-172"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>step</span>
<a name="line-173"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>readSTRef</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fst</span><span class='hs-layout'>)</span> <span class='hs-varid'>sr</span>
<a name="line-174"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span>
<a name="line-175"></a> <span class='hs-comment'>-- Since the simulation is done in a per-cycle basis</span>
<a name="line-176"></a> <span class='hs-comment'>-- the results (outs) are transposed (not what we want)</span>
<a name="line-177"></a> <span class='hs-comment'>-- e.g.</span>
<a name="line-178"></a> <span class='hs-comment'>-- imagine a system whose outputs are its inputs plus 1</span>
<a name="line-179"></a> <span class='hs-comment'>-- then, for this these two inputs [[1,2,3],[4,5,6]]</span>
<a name="line-180"></a> <span class='hs-comment'>-- outs would be [[2,5],[3,6],[4,7]]</span>
<a name="line-181"></a> <span class='hs-comment'>--</span>
<a name="line-182"></a> <span class='hs-comment'>-- We need as well to check that all inputs are defined in</span>
<a name="line-183"></a> <span class='hs-comment'>-- each simulation cycle e.g. [[1,2,3],[4,5,6,7]] as input</span>
<a name="line-184"></a> <span class='hs-comment'>-- makes imposible to simulate cycle 4</span>
<a name="line-185"></a> <span class='hs-comment'>--</span>
<a name="line-186"></a> <span class='hs-comment'>-- NOTE: having to check this makes simulation really inneficient</span>
<a name="line-187"></a> <span class='hs-comment'>-- a solution would providing a cycle-based simulation input/output</span>
<a name="line-188"></a> <span class='hs-comment'>-- which wouldn't suffer from this problems</span>
<a name="line-189"></a> <span class='hs-comment'>-- Or, even better, a simulation which showed a diffierent type of output </span>
<a name="line-190"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>inN</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>sysDefInIface</span>
<a name="line-191"></a> <span class='hs-varid'>res</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>inN</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyword'>then</span>
<a name="line-192"></a> <span class='hs-varid'>transpose</span> <span class='hs-varid'>outs</span>
<a name="line-193"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>transpose</span> <span class='hs-layout'>(</span><span class='hs-varid'>checkIns</span> <span class='hs-varid'>inN</span> <span class='hs-layout'>(</span><span class='hs-varid'>transpose</span> <span class='hs-varid'>inps</span><span class='hs-layout'>)</span> <span class='hs-varid'>outs</span><span class='hs-layout'>)</span>
<a name="line-194"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>res</span>
<a name="line-195"></a> <span class='hs-layout'>)</span>
<a name="line-196"></a>
<a name="line-197"></a>
<a name="line-198"></a><span class='hs-comment'>-- evaluation order</span>
<a name="line-199"></a>
<a name="line-200"></a><a name="relate"></a><span class='hs-definition'>relate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Var</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Var</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Dynamic</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-201"></a><span class='hs-definition'>relate</span> <span class='hs-layout'>(</span><span class='hs-varid'>rval</span><span class='hs-layout'>,</span> <span class='hs-varid'>rwir</span><span class='hs-layout'>)</span> <span class='hs-varid'>rs</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span>
<a name="line-202"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>rwir</span> <span class='hs-varop'>$</span>
<a name="line-203"></a> <span class='hs-conid'>Wire</span><span class='hs-layout'>{</span> <span class='hs-varid'>dependencies</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rs</span>
<a name="line-204"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>kick</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>f</span>
<a name="line-205"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>rval</span> <span class='hs-varid'>b</span>
<a name="line-206"></a> <span class='hs-layout'>}</span>
<a name="line-207"></a>
<a name="line-208"></a><a name="drive"></a><span class='hs-definition'>drive</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Var</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-209"></a><span class='hs-definition'>drive</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span>
<a name="line-210"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-211"></a>
<a name="line-212"></a><span class='hs-definition'>drive</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>rwir</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-213"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>wire</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>rwir</span>
<a name="line-214"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>rwir</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"detected combinational loop"</span><span class='hs-layout'>)</span>
<a name="line-215"></a> <span class='hs-varid'>driv1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>drive</span> <span class='hs-layout'>(</span><span class='hs-varid'>dependencies</span> <span class='hs-varid'>wire</span><span class='hs-layout'>)</span>
<a name="line-216"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>rwir</span> <span class='hs-varop'>$</span>
<a name="line-217"></a> <span class='hs-conid'>Wire</span> <span class='hs-layout'>{</span> <span class='hs-varid'>dependencies</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>kick</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span> <span class='hs-layout'>}</span>
<a name="line-218"></a> <span class='hs-varid'>driv2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>drive</span> <span class='hs-varid'>rs</span>
<a name="line-219"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-220"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>driv1</span>
<a name="line-221"></a> <span class='hs-varid'>kick</span> <span class='hs-varid'>wire</span>
<a name="line-222"></a> <span class='hs-varid'>driv2</span>
<a name="line-223"></a>
<a name="line-224"></a><span class='hs-comment'>----------------------------------------------------------------</span>
<a name="line-225"></a><span class='hs-comment'>-- helper functions</span>
<a name="line-226"></a>
<a name="line-227"></a><a name="lazyloop"></a><span class='hs-definition'>lazyloop</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-228"></a><span class='hs-definition'>lazyloop</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span>
<a name="line-229"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>m</span>
<a name="line-230"></a> <span class='hs-keyword'>as</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>unsafeInterleaveST</span> <span class='hs-layout'>(</span><span class='hs-varid'>lazyloop</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-231"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-232"></a>
<a name="line-233"></a><a name="checkIns"></a><span class='hs-comment'>-- | check that there will only be output as long as there are inputs </span>
<a name="line-234"></a><span class='hs-definition'>checkIns</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ number of inputs </span>
<a name="line-235"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ transposed inputs </span>
<a name="line-236"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ transposed outputs (infinitie list) </span>
<a name="line-237"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ selected outputs</span>
<a name="line-238"></a>
<a name="line-239"></a><span class='hs-comment'>-- The lazy pattern match is used to avoid evaluating the output list </span>
<a name="line-240"></a><span class='hs-comment'>-- if length i /= nIns. If that happens the input lists of simulate will </span>
<a name="line-241"></a><span class='hs-comment'>-- implicitly be simulated, and due to lack of inputs it will cause an error. </span>
<a name="line-242"></a><span class='hs-definition'>checkIns</span> <span class='hs-varid'>nIns</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-conop'>:</span><span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>o</span><span class='hs-conop'>:</span><span class='hs-varid'>os</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>length</span> <span class='hs-varid'>i</span> <span class='hs-varop'>==</span> <span class='hs-varid'>nIns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>o</span> <span class='hs-conop'>:</span> <span class='hs-varid'>checkIns</span> <span class='hs-varid'>nIns</span> <span class='hs-varid'>is</span> <span class='hs-varid'>os</span>
<a name="line-243"></a><span class='hs-definition'>checkIns</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-244"></a>
<a name="line-245"></a>
<a name="line-246"></a>
<a name="line-247"></a>
</pre></body>
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distrib
>
Fedora
>
14
>
x86_64
>
media
>
updates
>
by-pkgid
>
a47f0719970f9f829128f311a437816d
>
files
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302
