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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE TemplateHaskell, FlexibleInstances, ScopedTypeVariables,
<a name="line-2"></a> MultiParamTypeClasses, UndecidableInstances #-}</span>
<a name="line-3"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-4"></a><span class='hs-comment'>-- |</span>
<a name="line-5"></a><span class='hs-comment'>-- Module : ForSyDe.System.SysFun.Instances</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) The ForSyDe Team 2007</span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-8"></a><span class='hs-comment'>-- </span>
<a name="line-9"></a><span class='hs-comment'>-- Maintainer : forsyde-dev@ict.kth.se</span>
<a name="line-10"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-11"></a><span class='hs-comment'>-- Portability : non-portable (Template Haskell)</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- This module provides the instances for 'SysFun', it cannot</span>
<a name="line-14"></a><span class='hs-comment'>-- be included in "ForSyDe.System.SysFun" directly due to a Template Haskell</span>
<a name="line-15"></a><span class='hs-comment'>-- bug which prevents Template Haskell from executing functions defined in the</span>
<a name="line-16"></a><span class='hs-comment'>-- same module: <<a href="http://hackage.haskell.org/trac/ghc/ticket/1800">http://hackage.haskell.org/trac/ghc/ticket/1800</a>></span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>----------------------------------------------------------------------------- </span>
<a name="line-19"></a><span class='hs-keyword'>module</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-varop'>.</span><span class='hs-conid'>Instances</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>where</span>
<a name="line-20"></a>
<a name="line-21"></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-22"></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-layout'>(</span><span class='hs-varid'>liftM</span><span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Haskell</span><span class='hs-varop'>.</span><span class='hs-conid'>TH</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span> <span class='hs-layout'>(</span><span class='hs-varid'>runIO</span><span class='hs-layout'>,</span> <span class='hs-varid'>runQ</span><span class='hs-layout'>,</span> <span class='hs-varid'>lift</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span><span class='hs-layout'>)</span>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ForSyDe</span><span class='hs-varop'>.</span><span class='hs-conid'>Config</span> <span class='hs-layout'>(</span><span class='hs-varid'>maxTupleSize</span><span class='hs-layout'>)</span>
<a name="line-27"></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>
<a name="line-28"></a> <span class='hs-conid'>SysFun</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-29"></a> <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-30"></a> <span class='hs-conid'>SysFunToIOSimFun</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-31"></a> <span class='hs-varid'>funOutInstances</span><span class='hs-layout'>)</span>
<a name="line-32"></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-33"></a><span class='hs-comment'>-- This aparently unnecesary SysDef import is needed as a workaround for </span>
<a name="line-34"></a><span class='hs-comment'>-- <a href="http://hackage.haskell.org/trac/ghc/ticket/1012">http://hackage.haskell.org/trac/ghc/ticket/1012</a></span>
<a name="line-35"></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><span class='hs-conid'>()</span>
<a name="line-36"></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'>ProcType</span> <span class='hs-layout'>(</span><span class='hs-conid'>ProcType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-37"></a>
<a name="line-38"></a>
<a name="line-39"></a><span class='hs-comment'>-- IMPORTANT NOTE: even if all ProcType constraints in SysFun and</span>
<a name="line-40"></a><span class='hs-comment'>-- SysFunToSimFun instances could be less restrictive</span>
<a name="line-41"></a><span class='hs-comment'>-- (Typeable would do), it makes more sense, and who nows,</span>
<a name="line-42"></a><span class='hs-comment'>-- maybe we end up requiring full ProcType functionality at</span>
<a name="line-43"></a><span class='hs-comment'>-- some point.</span>
<a name="line-44"></a>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-comment'>-- This three instances are the ones in charge of providing the necessary </span>
<a name="line-47"></a><span class='hs-comment'>-- recursion step needed to support the variable number of arguments.</span>
<a name="line-48"></a><span class='hs-comment'>-- In each step, the system function is provided with a new input signal port</span>
<a name="line-49"></a><span class='hs-comment'>-- until the output signals are obtained.</span>
<a name="line-50"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>ProcType</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>SysFun</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>SysFun</span> <span class='hs-layout'>(</span><span class='hs-conid'>Signal</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-51"></a> <span class='hs-varid'>applySysFun</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ids</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>outSignals</span><span class='hs-layout'>,</span> <span class='hs-varid'>currInType</span> <span class='hs-conop'>:</span> <span class='hs-varid'>nextInTypeReps</span><span class='hs-layout'>,</span> <span class='hs-varid'>outTypeReps</span><span class='hs-layout'>)</span>
<a name="line-52"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>outSignals</span><span class='hs-layout'>,</span> <span class='hs-varid'>nextInTypeReps</span><span class='hs-layout'>,</span> <span class='hs-varid'>outTypeReps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-53"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ids</span> <span class='hs-keyword'>of</span>
<a name="line-54"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>applySysFun</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-varid'>newInPort</span> <span class='hs-str'>"default"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
<a name="line-55"></a> <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-varid'>applySysFun</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Signal</span> <span class='hs-layout'>(</span><span class='hs-varid'>newInPort</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>is</span>
<a name="line-56"></a> <span class='hs-varid'>currInType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>typeOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Signal</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-57"></a> <span class='hs-varid'>fromListSysFun</span> <span class='hs-varid'>f</span> <span class='hs-varid'>accum</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromListSysFun</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>unSignal</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>accum</span><span class='hs-layout'>)</span>
<a name="line-58"></a>
<a name="line-59"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>ProcType</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>SysFunToSimFun</span> <span class='hs-varid'>sysFun</span> <span class='hs-varid'>simFun</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span>
<a name="line-60"></a> <span class='hs-conid'>SysFunToSimFun</span> <span class='hs-layout'>(</span><span class='hs-conid'>Signal</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>sysFun</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</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-varid'>simFun</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-61"></a> <span class='hs-varid'>fromDynSimFun</span> <span class='hs-varid'>f</span> <span class='hs-varid'>accum</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromDynSimFun</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toDyn</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>accum</span><span class='hs-layout'>)</span>
<a name="line-62"></a>
<a name="line-63"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>ProcType</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>SysFunToIOSimFun</span> <span class='hs-varid'>sysFun</span> <span class='hs-varid'>simFun</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span>
<a name="line-64"></a> <span class='hs-conid'>SysFunToIOSimFun</span> <span class='hs-layout'>(</span><span class='hs-conid'>Signal</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>sysFun</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</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-varid'>simFun</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-65"></a> <span class='hs-varid'>fromTHStrSimFun</span> <span class='hs-varid'>f</span> <span class='hs-varid'>accum</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromTHStrSimFun</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>unsafeLift</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>accum</span><span class='hs-layout'>)</span>
<a name="line-66"></a> <span class='hs-comment'>-- FIXME: This won't be needed once the Data a => Lift a instance</span>
<a name="line-67"></a> <span class='hs-comment'>-- is created</span>
<a name="line-68"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>unsafeLift</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span><span class='hs-varop'>.</span><span class='hs-varid'>runQ</span><span class='hs-varop'>.</span><span class='hs-varid'>lift</span>
<a name="line-69"></a>
<a name="line-70"></a><span class='hs-comment'>-- Generate instances for the system function outputs up to the maximum</span>
<a name="line-71"></a><span class='hs-comment'>-- tuple size</span>
<a name="line-72"></a><span class='hs-varop'>$</span><span class='hs-layout'>(</span><span class='hs-keyword'>let</span> <span class='hs-varid'>concatMapM</span> <span class='hs-varid'>f</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-varid'>concat</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapM</span> <span class='hs-varid'>f</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-varid'>listFunOutInstances</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>funOutInstances</span>
<a name="line-74"></a> <span class='hs-varid'>msg</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Generating and compiling "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>maxTupleSize</span> <span class='hs-varop'>++</span>
<a name="line-75"></a> <span class='hs-str'>" output instances of "</span> <span class='hs-varop'>++</span>
<a name="line-76"></a> <span class='hs-varid'>show</span> <span class='hs-chr'>'</span><span class='hs-chr'>'</span><span class='hs-conid'>SysFun</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-chr'>'</span><span class='hs-chr'>'</span><span class='hs-conid'>SysFunToSimFun</span> <span class='hs-varop'>++</span>
<a name="line-77"></a> <span class='hs-str'>" and "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-chr'>'</span><span class='hs-chr'>'</span><span class='hs-conid'>SysFunToIOSimFun</span> <span class='hs-varop'>++</span>
<a name="line-78"></a> <span class='hs-str'>", this might take some time ... \n"</span>
<a name="line-79"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>runIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-varid'>msg</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span>
<a name="line-80"></a> <span class='hs-varid'>concatMapM</span> <span class='hs-varid'>listFunOutInstances</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span><span class='hs-keyglyph'>..</span><span class='hs-varid'>maxTupleSize</span><span class='hs-keyglyph'>]</span>
<a name="line-81"></a> <span class='hs-layout'>)</span>
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