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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.Netlist.Traverse</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 (LSTV)</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This module provides traversing operations for 'ForSyDe.Netlist'</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></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-16"></a><span class='hs-comment'>-- </span>
<a name="line-17"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-18"></a><span class='hs-keyword'>module</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> <span class='hs-keyword'>where</span>
<a name="line-19"></a>
<a name="line-20"></a>
<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>
<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'>OSharing</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'>ForSyDeErr</span>
<a name="line-24"></a>
<a name="line-25"></a>
<a name="line-26"></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'>fromMaybe</span><span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-comment'>-- qualified to avoid nameclash</span>
<a name="line-28"></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'>Foldable</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>DF</span> <span class='hs-layout'>(</span><span class='hs-conid'>Foldable</span><span class='hs-layout'>(</span><span class='hs-varid'>foldMap</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>toList</span><span class='hs-layout'>)</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'>Monoid</span> <span class='hs-layout'>(</span><span class='hs-varid'>mempty</span><span class='hs-layout'>)</span>
<a name="line-30"></a><span class='hs-comment'>-- qualified to avoid nameclash</span>
<a name="line-31"></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> <span class='hs-layout'>(</span><span class='hs-conid'>Traversable</span><span class='hs-layout'>(</span><span class='hs-varid'>traverse</span><span class='hs-layout'>,</span><span class='hs-varid'>mapM</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span> <span class='hs-layout'>(</span><span class='hs-varid'>pure</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-33"></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'>State</span>
<a name="line-34"></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> <span class='hs-layout'>(</span><span class='hs-conid'>ST</span><span class='hs-layout'>)</span>
<a name="line-35"></a>
<a name="line-36"></a><span class='hs-comment'>-- Instances to traverse a netlist Node (and implicitly the whole netlist)</span>
<a name="line-37"></a>
<a name="line-38"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>DF</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-conid'>NlProc</span> <span class='hs-keyword'>where</span>
<a name="line-39"></a> <span class='hs-varid'>foldMap</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Const</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-40"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>ZipWithNSY</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DF</span><span class='hs-varop'>.</span><span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span>
<a name="line-41"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>ZipWithxSY</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DF</span><span class='hs-varop'>.</span><span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span>
<a name="line-42"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>UnzipNSY</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span>
<a name="line-43"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>UnzipxSY</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span>
<a name="line-44"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>DelaySY</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span>
<a name="line-45"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>SysIns</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DF</span><span class='hs-varop'>.</span><span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span>
<a name="line-46"></a>
<a name="line-47"></a>
<a name="line-48"></a>
<a name="line-49"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>DF</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span> <span class='hs-conid'>NlNode</span> <span class='hs-keyword'>where</span>
<a name="line-50"></a> <span class='hs-varid'>foldMap</span> <span class='hs-keyword'>_</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'>mempty</span>
<a name="line-51"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Proc</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>proc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DF</span><span class='hs-varop'>.</span><span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>proc</span>
<a name="line-52"></a>
<a name="line-53"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-conid'>NlProc</span> <span class='hs-keyword'>where</span>
<a name="line-54"></a> <span class='hs-varid'>fmap</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Const</span> <span class='hs-varid'>val</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Const</span> <span class='hs-varid'>val</span>
<a name="line-55"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>ZipWithNSY</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ZipWithNSY</span> <span class='hs-varid'>pf</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span>
<a name="line-56"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>ZipWithxSY</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ZipWithxSY</span> <span class='hs-varid'>pf</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span>
<a name="line-57"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>UnzipNSY</span> <span class='hs-varid'>ts</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>UnzipNSY</span> <span class='hs-varid'>ts</span> <span class='hs-varid'>pf</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-58"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>UnzipxSY</span> <span class='hs-varid'>t</span> <span class='hs-varid'>n</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>UnzipxSY</span> <span class='hs-varid'>t</span> <span class='hs-varid'>n</span> <span class='hs-varid'>pf</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-59"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>DelaySY</span> <span class='hs-varid'>c</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DelaySY</span> <span class='hs-varid'>c</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-60"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>SysIns</span> <span class='hs-varid'>def</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SysIns</span> <span class='hs-varid'>def</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span>
<a name="line-61"></a>
<a name="line-62"></a>
<a name="line-63"></a>
<a name="line-64"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-conid'>NlNode</span> <span class='hs-keyword'>where</span>
<a name="line-65"></a> <span class='hs-varid'>fmap</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>InPort</span> <span class='hs-varid'>id</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InPort</span> <span class='hs-varid'>id</span>
<a name="line-66"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Proc</span> <span class='hs-varid'>id</span> <span class='hs-varid'>proc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Proc</span> <span class='hs-varid'>id</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>proc</span><span class='hs-layout'>)</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span> <span class='hs-conid'>NlProc</span> <span class='hs-keyword'>where</span>
<a name="line-69"></a> <span class='hs-varid'>traverse</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Const</span> <span class='hs-varid'>val</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-layout'>(</span><span class='hs-conid'>Const</span> <span class='hs-varid'>val</span><span class='hs-layout'>)</span>
<a name="line-70"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>ZipWithNSY</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ZipWithNSY</span> <span class='hs-varid'>pf</span> <span class='hs-varop'><$></span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span>
<a name="line-71"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>ZipWithxSY</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ZipWithxSY</span> <span class='hs-varid'>pf</span> <span class='hs-varop'><$></span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span>
<a name="line-72"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>UnzipNSY</span> <span class='hs-varid'>ts</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>UnzipNSY</span> <span class='hs-varid'>ts</span> <span class='hs-varid'>pf</span> <span class='hs-varop'><$></span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span>
<a name="line-73"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>UnzipxSY</span> <span class='hs-varid'>t</span> <span class='hs-varid'>n</span> <span class='hs-varid'>pf</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>UnzipxSY</span> <span class='hs-varid'>t</span> <span class='hs-varid'>n</span> <span class='hs-varid'>pf</span> <span class='hs-varop'><$></span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span>
<a name="line-74"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>DelaySY</span> <span class='hs-varid'>c</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DelaySY</span> <span class='hs-varid'>c</span> <span class='hs-varop'><$></span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span>
<a name="line-75"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>SysIns</span> <span class='hs-varid'>def</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SysIns</span> <span class='hs-varid'>def</span> <span class='hs-varop'><$></span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varid'>is</span>
<a name="line-76"></a>
<a name="line-77"></a>
<a name="line-78"></a>
<a name="line-79"></a>
<a name="line-80"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span> <span class='hs-conid'>NlNode</span> <span class='hs-keyword'>where</span>
<a name="line-81"></a> <span class='hs-varid'>traverse</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>InPort</span> <span class='hs-varid'>id</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-layout'>(</span><span class='hs-conid'>InPort</span> <span class='hs-varid'>id</span><span class='hs-layout'>)</span>
<a name="line-82"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Proc</span> <span class='hs-varid'>id</span> <span class='hs-varid'>proc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Proc</span> <span class='hs-varid'>id</span> <span class='hs-varop'><$></span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varid'>proc</span>
<a name="line-83"></a>
<a name="line-84"></a>
<a name="line-85"></a><a name="TravSEIO"></a><span class='hs-comment'>-- | Traversing monad, stacking state and error transformers over IO</span>
<a name="line-86"></a><a name="TravSEIO"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>TravSEIO</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>StateT</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>ErrorT</span> <span class='hs-varid'>e</span> <span class='hs-conid'>IO</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-87"></a>
<a name="line-88"></a>
<a name="line-89"></a>
<a name="line-90"></a><a name="traverseSEIO"></a><span class='hs-comment'>-- | traverseSIO traverses a netlist and returns a final user-defined </span>
<a name="line-91"></a><span class='hs-comment'>-- traversing state (@s@) given:</span>
<a name="line-92"></a><span class='hs-comment'>-- new: generates a new (and normally unique) tag for the outputs of each </span>
<a name="line-93"></a><span class='hs-comment'>-- netlist node given the traversing state (which is possibly updated </span>
<a name="line-94"></a><span class='hs-comment'>-- as well).</span>
<a name="line-95"></a><span class='hs-comment'>-- define: given the output tags of a node, current iteration state, </span>
<a name="line-96"></a><span class='hs-comment'>-- and the output tags of its children, @define@</span>
<a name="line-97"></a><span class='hs-comment'>-- generates the netlist of that node, possibly updating </span>
<a name="line-98"></a><span class='hs-comment'>-- the traversing state</span>
<a name="line-99"></a><span class='hs-comment'>-- FIXME: shoudn't the arguments of define go the other way around?</span>
<a name="line-100"></a><span class='hs-comment'>-- first inputs then outputs.</span>
<a name="line-101"></a><span class='hs-comment'>-- FIXME: why are tags needed in define? [oinfo] should be enough.</span>
<a name="line-102"></a><span class='hs-comment'>-- tags are ugly in general (see the pattern matches) fix this problem.</span>
<a name="line-103"></a><span class='hs-definition'>traverseSEIO</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span> <span class='hs-varid'>container</span><span class='hs-layout'>,</span> <span class='hs-conid'>Error</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span>
<a name="line-104"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NlNode</span> <span class='hs-conid'>NlSignal</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TravSEIO</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ new</span>
<a name="line-105"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>NlNode</span> <span class='hs-varid'>oinfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TravSEIO</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ define</span>
<a name="line-106"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Netlist</span> <span class='hs-varid'>container</span>
<a name="line-107"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TravSEIO</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-layout'>(</span><span class='hs-varid'>container</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span>
<a name="line-108"></a><span class='hs-definition'>traverseSEIO</span> <span class='hs-varid'>new</span> <span class='hs-varid'>define</span> <span class='hs-layout'>(</span><span class='hs-conid'>Netlist</span> <span class='hs-varid'>rootSignals</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-109"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>uRefTable</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>newURefTableIO</span>
<a name="line-110"></a>
<a name="line-111"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>gather</span> <span class='hs-layout'>(</span><span class='hs-conid'>NlTree</span> <span class='hs-layout'>(</span><span class='hs-conid'>NlEdge</span> <span class='hs-varid'>nodeRef</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-112"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>visited</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>queryIO</span> <span class='hs-varid'>uRefTable</span> <span class='hs-varid'>nodeRef</span>
<a name="line-113"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>visited</span> <span class='hs-keyword'>of</span>
<a name="line-114"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>infoPairs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>infoPairs</span><span class='hs-layout'>)</span>
<a name="line-115"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-116"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>node</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readURef</span> <span class='hs-varid'>nodeRef</span>
<a name="line-117"></a> <span class='hs-varid'>infoPairs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>new</span> <span class='hs-varid'>node</span>
<a name="line-118"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>addEntryIO</span> <span class='hs-varid'>uRefTable</span> <span class='hs-varid'>nodeRef</span> <span class='hs-varid'>infoPairs</span>
<a name="line-119"></a> <span class='hs-varid'>childInfo</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-varid'>gather</span> <span class='hs-varid'>node</span>
<a name="line-120"></a> <span class='hs-varid'>define</span> <span class='hs-varid'>infoPairs</span> <span class='hs-varid'>childInfo</span>
<a name="line-121"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>infoPairs</span><span class='hs-layout'>)</span>
<a name="line-122"></a>
<a name="line-123"></a> <span class='hs-varid'>specifyOut</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NlNodeOut</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-124"></a> <span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>pairs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-varid'>err</span> <span class='hs-varid'>maybeOut</span>
<a name="line-125"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>funName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"ForSyDe.NetList.Traverse.traverseIO"</span>
<a name="line-126"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intError</span> <span class='hs-varid'>funName</span> <span class='hs-conid'>InconsOutTag</span>
<a name="line-127"></a> <span class='hs-varid'>maybeOut</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>pairs</span>
<a name="line-128"></a>
<a name="line-129"></a> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>mapM</span> <span class='hs-varid'>gather</span> <span class='hs-varid'>rootSignals</span>
<a name="line-130"></a>
<a name="line-131"></a><a name="TravSEST"></a><span class='hs-comment'>-- | Traversing monad, stacking state and error transformers over ST</span>
<a name="line-132"></a><a name="TravSEST"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>TravSEST</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-varid'>st</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>StateT</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>ErrorT</span> <span class='hs-varid'>e</span> <span class='hs-layout'>(</span><span class='hs-conid'>ST</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-133"></a>
<a name="line-134"></a><a name="traverseSEST"></a><span class='hs-comment'>-- | 'ST'-monad version of 'traverseSEIO'</span>
<a name="line-135"></a><span class='hs-definition'>traverseSEST</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span> <span class='hs-varid'>container</span><span class='hs-layout'>,</span> <span class='hs-conid'>Error</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span>
<a name="line-136"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NlNode</span> <span class='hs-conid'>NlSignal</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TravSEST</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ new</span>
<a name="line-137"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>NlNode</span> <span class='hs-varid'>oinfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TravSEST</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-varid'>st</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ define</span>
<a name="line-138"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Netlist</span> <span class='hs-varid'>container</span>
<a name="line-139"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TravSEST</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span> <span class='hs-varid'>st</span> <span class='hs-layout'>(</span><span class='hs-varid'>container</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span>
<a name="line-140"></a><span class='hs-definition'>traverseSEST</span> <span class='hs-varid'>new</span> <span class='hs-varid'>define</span> <span class='hs-layout'>(</span><span class='hs-conid'>Netlist</span> <span class='hs-varid'>rootSignals</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-141"></a> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>lift2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lift</span><span class='hs-varop'>.</span><span class='hs-varid'>lift</span>
<a name="line-142"></a> <span class='hs-varid'>uRefTable</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lift2</span> <span class='hs-varop'>$</span> <span class='hs-varid'>newURefTableST</span>
<a name="line-143"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>gather</span> <span class='hs-layout'>(</span><span class='hs-conid'>NlTree</span> <span class='hs-layout'>(</span><span class='hs-conid'>NlEdge</span> <span class='hs-varid'>nodeRef</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-144"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>visited</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lift2</span> <span class='hs-varop'>$</span> <span class='hs-varid'>queryST</span> <span class='hs-varid'>uRefTable</span> <span class='hs-varid'>nodeRef</span>
<a name="line-145"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>visited</span> <span class='hs-keyword'>of</span>
<a name="line-146"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>infoPairs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>infoPairs</span><span class='hs-layout'>)</span>
<a name="line-147"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-148"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>node</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readURef</span> <span class='hs-varid'>nodeRef</span>
<a name="line-149"></a> <span class='hs-varid'>infoPairs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>new</span> <span class='hs-varid'>node</span>
<a name="line-150"></a> <span class='hs-varid'>lift2</span> <span class='hs-varop'>$</span> <span class='hs-varid'>addEntryST</span> <span class='hs-varid'>uRefTable</span> <span class='hs-varid'>nodeRef</span> <span class='hs-varid'>infoPairs</span>
<a name="line-151"></a> <span class='hs-varid'>childInfo</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-varid'>gather</span> <span class='hs-varid'>node</span>
<a name="line-152"></a> <span class='hs-varid'>define</span> <span class='hs-varid'>infoPairs</span> <span class='hs-varid'>childInfo</span>
<a name="line-153"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>infoPairs</span><span class='hs-layout'>)</span>
<a name="line-154"></a>
<a name="line-155"></a> <span class='hs-varid'>specifyOut</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NlNodeOut</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-156"></a> <span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>pairs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-varid'>err</span> <span class='hs-varid'>maybeOut</span>
<a name="line-157"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>funName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"ForSyDe.NetList.Traverse.traverseIO"</span>
<a name="line-158"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intError</span> <span class='hs-varid'>funName</span> <span class='hs-conid'>InconsOutTag</span>
<a name="line-159"></a> <span class='hs-varid'>maybeOut</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>pairs</span>
<a name="line-160"></a>
<a name="line-161"></a> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>mapM</span> <span class='hs-varid'>gather</span> <span class='hs-varid'>rootSignals</span>
<a name="line-162"></a>
<a name="line-163"></a><a name="traverseST"></a><span class='hs-comment'>-- deprecated, do not use</span>
<a name="line-164"></a><span class='hs-definition'>traverseST</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span> <span class='hs-varid'>container</span> <span class='hs-keyglyph'>=></span>
<a name="line-165"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NlNode</span> <span class='hs-conid'>NlSignal</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-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-166"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>NlNode</span> <span class='hs-varid'>oinfo</span> <span class='hs-keyglyph'>-></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-167"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Netlist</span> <span class='hs-varid'>container</span>
<a name="line-168"></a> <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-varid'>container</span> <span class='hs-varid'>oinfo</span><span class='hs-layout'>)</span>
<a name="line-169"></a><span class='hs-definition'>traverseST</span> <span class='hs-varid'>new</span> <span class='hs-varid'>define</span> <span class='hs-layout'>(</span><span class='hs-conid'>Netlist</span> <span class='hs-varid'>rootSignals</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-170"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>uRefTable</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newURefTableST</span>
<a name="line-171"></a>
<a name="line-172"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>gather</span> <span class='hs-layout'>(</span><span class='hs-conid'>NlTree</span> <span class='hs-layout'>(</span><span class='hs-conid'>NlEdge</span> <span class='hs-varid'>nodeRef</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-173"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>visited</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>queryST</span> <span class='hs-varid'>uRefTable</span> <span class='hs-varid'>nodeRef</span>
<a name="line-174"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>visited</span> <span class='hs-keyword'>of</span>
<a name="line-175"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>infoPairs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>infoPairs</span><span class='hs-layout'>)</span>
<a name="line-176"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>node</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readURef</span> <span class='hs-varid'>nodeRef</span>
<a name="line-177"></a> <span class='hs-varid'>infoPairs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>new</span> <span class='hs-varid'>node</span>
<a name="line-178"></a> <span class='hs-varid'>addEntryST</span> <span class='hs-varid'>uRefTable</span> <span class='hs-varid'>nodeRef</span> <span class='hs-varid'>infoPairs</span>
<a name="line-179"></a> <span class='hs-varid'>childInfo</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-varid'>gather</span> <span class='hs-varid'>node</span>
<a name="line-180"></a> <span class='hs-varid'>define</span> <span class='hs-varid'>infoPairs</span> <span class='hs-varid'>childInfo</span>
<a name="line-181"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>infoPairs</span><span class='hs-layout'>)</span>
<a name="line-182"></a>
<a name="line-183"></a> <span class='hs-varid'>specifyOut</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NlNodeOut</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NlNodeOut</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-184"></a> <span class='hs-varid'>specifyOut</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>pairs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-varid'>err</span> <span class='hs-varid'>maybeOut</span>
<a name="line-185"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>funName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"ForSyDe.NetList.Traverse.traverseST"</span>
<a name="line-186"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intError</span> <span class='hs-varid'>funName</span> <span class='hs-conid'>InconsOutTag</span>
<a name="line-187"></a> <span class='hs-varid'>maybeOut</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>pairs</span>
<a name="line-188"></a>
<a name="line-189"></a> <span class='hs-conid'>DT</span><span class='hs-varop'>.</span><span class='hs-varid'>mapM</span> <span class='hs-varid'>gather</span> <span class='hs-varid'>rootSignals</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="arguments"></a><span class='hs-comment'>-- | Obtain the arguments of a node</span>
<a name="line-192"></a><span class='hs-definition'>arguments</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>NlNode</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-193"></a><span class='hs-definition'>arguments</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DF</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span>
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