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<title>Text/Regex/TDFA/NewDFA/Engine_FA.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- | This is the code for the main engine. This captures the posix</span>
<a name="line-2"></a><span class='hs-comment'>-- subexpressions. There is also a non-capturing engine, and a</span>
<a name="line-3"></a><span class='hs-comment'>-- testing engine.</span>
<a name="line-4"></a><span class='hs-comment'>-- </span>
<a name="line-5"></a><span class='hs-comment'>-- It is polymorphic over the internal Uncons type class, and</span>
<a name="line-6"></a><span class='hs-comment'>-- specialized to produce the needed variants.</span>
<a name="line-7"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Regex</span><span class='hs-varop'>.</span><span class='hs-conid'>TDFA</span><span class='hs-varop'>.</span><span class='hs-conid'>NewDFA</span><span class='hs-varop'>.</span><span class='hs-conid'>Engine_FA</span><span class='hs-layout'>(</span><span class='hs-varid'>execMatch</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-8"></a>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span><span class='hs-layout'>(</span><span class='hs-varid'>unsafeRead</span><span class='hs-layout'>,</span><span class='hs-varid'>unsafeWrite</span><span class='hs-layout'>,</span><span class='hs-conid'>STUArray</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-10"></a><span class='hs-comment'>-- #ifdef __GLASGOW_HASKELL__</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Arr</span><span class='hs-layout'>(</span><span class='hs-conid'>STArray</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</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><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Prim</span><span class='hs-layout'>(</span><span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span><span class='hs-conid'>RealWorld</span><span class='hs-layout'>,</span><span class='hs-conid'>Int</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span><span class='hs-varid'>sizeofMutableByteArray</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span><span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-14"></a><span class='hs-comment'>{-
<a name="line-15"></a>-- #else
<a name="line-16"></a>import Control.Monad.ST(ST)
<a name="line-17"></a>import Data.Array.ST(STArray)
<a name="line-18"></a>-- #endif
<a name="line-19"></a>-}</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-varid'>hiding</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-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'>when</span><span class='hs-layout'>,</span><span class='hs-varid'>unless</span><span class='hs-layout'>,</span><span class='hs-varid'>forM</span><span class='hs-layout'>,</span><span class='hs-varid'>forM_</span><span class='hs-layout'>,</span><span class='hs-varid'>liftM2</span><span class='hs-layout'>,</span><span class='hs-varid'>foldM</span><span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>MArray</span><span class='hs-layout'>(</span><span class='hs-conid'>MArray</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>unsafeFreeze</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>IArray</span><span class='hs-layout'>(</span><span class='hs-conid'>Array</span><span class='hs-layout'>,</span><span class='hs-varid'>bounds</span><span class='hs-layout'>,</span><span class='hs-varid'>assocs</span><span class='hs-layout'>,</span><span class='hs-conid'>Ix</span><span class='hs-layout'>(</span><span class='hs-varid'>range</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-25"></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'>IntMap</span><span class='hs-varop'>.</span><span class='hs-conid'>CharMap2</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>CMap</span><span class='hs-layout'>(</span><span class='hs-varid'>findWithDefault</span><span class='hs-layout'>)</span>
<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'>IntMap</span><span class='hs-layout'>(</span><span class='hs-conid'>IntMap</span><span class='hs-layout'>)</span>
<a name="line-27"></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'>IntMap</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>IMap</span><span class='hs-layout'>(</span><span class='hs-varid'>null</span><span class='hs-layout'>,</span><span class='hs-varid'>toList</span><span class='hs-layout'>,</span><span class='hs-varid'>lookup</span><span class='hs-layout'>,</span><span class='hs-varid'>insert</span><span class='hs-layout'>)</span>
<a name="line-28"></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'>catMaybes</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-conid'>Monoid</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-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IntSet</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>ISet</span><span class='hs-layout'>(</span><span class='hs-varid'>toAscList</span><span class='hs-layout'>,</span><span class='hs-varid'>null</span><span class='hs-layout'>)</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'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>IArray</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-32"></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'>sortBy</span><span class='hs-layout'>,</span><span class='hs-varid'>groupBy</span><span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>STRef</span><span class='hs-layout'>(</span><span class='hs-conid'>STRef</span><span class='hs-layout'>,</span><span class='hs-varid'>newSTRef</span><span class='hs-layout'>,</span><span class='hs-varid'>readSTRef</span><span class='hs-layout'>,</span><span class='hs-varid'>writeSTRef</span><span class='hs-layout'>)</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</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-varop'>.</span><span class='hs-conid'>Strict</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>S</span><span class='hs-layout'>(</span><span class='hs-conid'>ST</span><span class='hs-layout'>,</span><span class='hs-varid'>runST</span><span class='hs-layout'>)</span>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequence</span><span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-layout'>,</span><span class='hs-conid'>ViewL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>viewl</span><span class='hs-layout'>)</span>
<a name="line-36"></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'>Sequence</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Seq</span><span class='hs-layout'>(</span><span class='hs-varid'>null</span><span class='hs-layout'>)</span>
<a name="line-37"></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'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>SBS</span><span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span>
<a name="line-38"></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'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>LBS</span><span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span>
<a name="line-39"></a>
<a name="line-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Regex</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span><span class='hs-layout'>(</span><span class='hs-conid'>MatchArray</span><span class='hs-layout'>,</span><span class='hs-conid'>MatchOffset</span><span class='hs-layout'>,</span><span class='hs-conid'>MatchLength</span><span class='hs-layout'>)</span>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Regex</span><span class='hs-varop'>.</span><span class='hs-conid'>TDFA</span><span class='hs-varop'>.</span><span class='hs-conid'>Common</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>indent</span><span class='hs-layout'>)</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Regex</span><span class='hs-varop'>.</span><span class='hs-conid'>TDFA</span><span class='hs-varop'>.</span><span class='hs-conid'>NewDFA</span><span class='hs-varop'>.</span><span class='hs-conid'>Uncons</span><span class='hs-layout'>(</span><span class='hs-conid'>Uncons</span><span class='hs-layout'>(</span><span class='hs-varid'>uncons</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Regex</span><span class='hs-varop'>.</span><span class='hs-conid'>TDFA</span><span class='hs-varop'>.</span><span class='hs-conid'>NewDFA</span><span class='hs-varop'>.</span><span class='hs-conid'>MakeTest</span><span class='hs-layout'>(</span><span class='hs-varid'>test_singleline</span><span class='hs-layout'>,</span><span class='hs-varid'>test_multiline</span><span class='hs-layout'>)</span>
<a name="line-44"></a>
<a name="line-45"></a><span class='hs-comment'>--import Debug.Trace</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='hs-comment'>-- trace :: String -> a -> a</span>
<a name="line-48"></a><span class='hs-comment'>-- trace _ a = a</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="err"></a><span class='hs-definition'>err</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-51"></a><span class='hs-definition'>err</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>common_error</span> <span class='hs-str'>"Text.Regex.TDFA.NewDFA.Engine_FA"</span> <span class='hs-varid'>s</span>
<a name="line-52"></a>
<a name="line-53"></a><a name="!!"></a><span class='hs-comment'>{-# INLINE (!!) #-}</span>
<a name="line-54"></a><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-varid'>a</span> <span class='hs-varid'>e</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-conid'>Ix</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-varid'>e</span>
<a name="line-55"></a><span class='hs-layout'>(</span><span class='hs-varop'>!!</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeRead</span>
<a name="line-56"></a><a name="set"></a><span class='hs-comment'>{-# INLINE set #-}</span>
<a name="line-57"></a><span class='hs-definition'>set</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-varid'>a</span> <span class='hs-varid'>e</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-conid'>Ix</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-58"></a><span class='hs-definition'>set</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeWrite</span>
<a name="line-59"></a>
<a name="line-60"></a><a name="noSource"></a><span class='hs-definition'>noSource</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Index</span><span class='hs-layout'>,</span> <span class='hs-conid'>Instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>,</span><span class='hs-conid'>OrbitLog</span><span class='hs-layout'>)</span>
<a name="line-61"></a><span class='hs-definition'>noSource</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>,</span><span class='hs-varid'>err</span> <span class='hs-str'>"noSource"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>err</span> <span class='hs-str'>"noSource"</span><span class='hs-layout'>,</span><span class='hs-varid'>err</span> <span class='hs-str'>"noSource"</span><span class='hs-layout'>)</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="execMatch"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> ([] Char) -> [MatchArray] #-}</span>
<a name="line-64"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> (Seq Char) -> [MatchArray] #-}</span>
<a name="line-65"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> SBS.ByteString -> [MatchArray] #-}</span>
<a name="line-66"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> LBS.ByteString -> [MatchArray] #-}</span>
<a name="line-67"></a><span class='hs-definition'>execMatch</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Uncons</span> <span class='hs-varid'>text</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Regex</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>text</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>MatchArray</span><span class='hs-keyglyph'>]</span>
<a name="line-68"></a><span class='hs-definition'>execMatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>Regex</span> <span class='hs-layout'>{</span> <span class='hs-varid'>regex_dfa</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DFA</span> <span class='hs-layout'>{</span><span class='hs-varid'>d_id</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>didIn</span><span class='hs-layout'>,</span><span class='hs-varid'>d_dt</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>dtIn</span><span class='hs-layout'>}</span>
<a name="line-69"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>regex_init</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>startState</span>
<a name="line-70"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>regex_b_index</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>b_index</span>
<a name="line-71"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>regex_b_tags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>b_tags_all</span>
<a name="line-72"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>regex_tags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>aTags</span>
<a name="line-73"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>regex_groups</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>aGroups</span>
<a name="line-74"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>regex_compOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CompOption</span> <span class='hs-layout'>{</span> <span class='hs-varid'>multiline</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newline</span> <span class='hs-layout'>}</span> <span class='hs-layout'>}</span> <span class='hs-layout'>)</span>
<a name="line-75"></a> <span class='hs-varid'>offsetIn</span> <span class='hs-varid'>prevIn</span> <span class='hs-varid'>inputIn</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>runST</span> <span class='hs-varid'>goNext</span> <span class='hs-keyword'>where</span>
<a name="line-76"></a>
<a name="line-77"></a> <span class='hs-varid'>b_tags</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tag</span><span class='hs-layout'>,</span><span class='hs-conid'>Tag</span><span class='hs-layout'>)</span>
<a name="line-78"></a> <span class='hs-varop'>!</span><span class='hs-varid'>b_tags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>b_tags_all</span>
<a name="line-79"></a>
<a name="line-80"></a> <span class='hs-varid'>orbitTags</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Tag</span><span class='hs-keyglyph'>]</span>
<a name="line-81"></a> <span class='hs-varop'>!</span><span class='hs-varid'>orbitTags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Orbit</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span><span class='hs-varop'>.</span><span class='hs-varid'>snd</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>assocs</span> <span class='hs-varop'>$</span> <span class='hs-varid'>aTags</span>
<a name="line-82"></a>
<a name="line-83"></a> <span class='hs-varop'>!</span><span class='hs-varid'>test</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkTest</span> <span class='hs-varid'>newline</span>
<a name="line-84"></a>
<a name="line-85"></a> <span class='hs-varid'>comp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>C</span> <span class='hs-varid'>s</span>
<a name="line-86"></a> <span class='hs-varid'>comp</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "matchHere.comp" #-}</span> <span class='hs-varid'>ditzyComp'3</span> <span class='hs-varid'>aTags</span>
<a name="line-87"></a>
<a name="line-88"></a> <span class='hs-varid'>goNext</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-89"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SScratch</span> <span class='hs-varid'>s1In</span> <span class='hs-varid'>s2In</span> <span class='hs-layout'>(</span><span class='hs-varid'>winQ</span><span class='hs-layout'>,</span><span class='hs-varid'>blank</span><span class='hs-layout'>,</span><span class='hs-varid'>which</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newScratch</span> <span class='hs-varid'>b_index</span> <span class='hs-varid'>b_tags</span>
<a name="line-90"></a> <span class='hs-varid'>spawnAt</span> <span class='hs-varid'>b_tags</span> <span class='hs-varid'>blank</span> <span class='hs-varid'>startState</span> <span class='hs-varid'>s1In</span> <span class='hs-varid'>offsetIn</span>
<a name="line-91"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>next</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>did</span> <span class='hs-varid'>dt</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>prev</span> <span class='hs-varid'>input</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.next" #-}</span>
<a name="line-92"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>dt</span> <span class='hs-keyword'>of</span>
<a name="line-93"></a> <span class='hs-conid'>Testing'</span> <span class='hs-layout'>{</span><span class='hs-varid'>dt_test</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>wt</span><span class='hs-layout'>,</span><span class='hs-varid'>dt_a</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>dt_b</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>b</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span>
<a name="line-94"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>test</span> <span class='hs-varid'>wt</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>prev</span> <span class='hs-varid'>input</span>
<a name="line-95"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>next</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>did</span> <span class='hs-varid'>a</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>prev</span> <span class='hs-varid'>input</span>
<a name="line-96"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>next</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>did</span> <span class='hs-varid'>b</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>prev</span> <span class='hs-varid'>input</span>
<a name="line-97"></a> <span class='hs-conid'>Simple'</span> <span class='hs-layout'>{</span><span class='hs-varid'>dt_win</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>dt_trans</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>t</span><span class='hs-layout'>,</span><span class='hs-varid'>dt_other</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>o</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-98"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-99"></a> <span class='hs-varid'>processWinner</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>w</span> <span class='hs-varid'>offset</span>
<a name="line-100"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>uncons</span> <span class='hs-varid'>input</span> <span class='hs-keyword'>of</span>
<a name="line-101"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>finalizeWinner</span>
<a name="line-102"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>input'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-103"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>CMap</span><span class='hs-varop'>.</span><span class='hs-varid'>findWithDefault</span> <span class='hs-varid'>o</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>of</span>
<a name="line-104"></a> <span class='hs-conid'>Transition</span> <span class='hs-layout'>{</span><span class='hs-varid'>trans_single</span><span class='hs-keyglyph'>=</span><span class='hs-conid'>DFA</span> <span class='hs-layout'>{</span><span class='hs-varid'>d_id</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>did'</span><span class='hs-layout'>,</span><span class='hs-varid'>d_dt</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>dt'</span><span class='hs-layout'>}</span><span class='hs-layout'>,</span><span class='hs-varid'>trans_how</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>dtrans</span><span class='hs-layout'>}</span>
<a name="line-105"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ISet</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>did'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>finalizeWinner</span>
<a name="line-106"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>findTrans</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>did</span> <span class='hs-varid'>did'</span> <span class='hs-varid'>dt'</span> <span class='hs-varid'>dtrans</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>c</span> <span class='hs-varid'>input'</span>
<a name="line-107"></a>
<a name="line-108"></a><span class='hs-comment'>-- compressOrbits gets all the current Tag-0 start information from</span>
<a name="line-109"></a><span class='hs-comment'>-- the NFA states; then it loops through all the Orbit tags with</span>
<a name="line-110"></a><span class='hs-comment'>-- compressOrbit.</span>
<a name="line-111"></a><span class='hs-comment'>--</span>
<a name="line-112"></a><span class='hs-comment'>-- compressOrbit on such a Tag loops through all the NFS states'</span>
<a name="line-113"></a><span class='hs-comment'>-- m_orbit record, discardind ones that are Nothing and discarding</span>
<a name="line-114"></a><span class='hs-comment'>-- ones that are too new to care about (after the cutoff value).</span>
<a name="line-115"></a><span class='hs-comment'>--</span>
<a name="line-116"></a><span class='hs-comment'>-- compressOrbit then groups the Orbits records by the Tag-0 start</span>
<a name="line-117"></a><span class='hs-comment'>-- position and the basePos position. Entried in different groups</span>
<a name="line-118"></a><span class='hs-comment'>-- will never be comparable in the future so they can be processed</span>
<a name="line-119"></a><span class='hs-comment'>-- separately. Groups could probably be even more finely</span>
<a name="line-120"></a><span class='hs-comment'>-- distinguished, as a futher optimization, but the justification will</span>
<a name="line-121"></a><span class='hs-comment'>-- be tricky.</span>
<a name="line-122"></a><span class='hs-comment'>--</span>
<a name="line-123"></a><span class='hs-comment'>-- Current Tag-0 values are at most offset and all newly spawned</span>
<a name="line-124"></a><span class='hs-comment'>-- groups will have Tag-0 of at least (succ offset) so the current</span>
<a name="line-125"></a><span class='hs-comment'>-- groups are closed to those spawned in the future. The basePos may</span>
<a name="line-126"></a><span class='hs-comment'>-- be as large as offset and may be overwritten later with values of</span>
<a name="line-127"></a><span class='hs-comment'>-- offset or larger (and this will also involve deleting the Orbits</span>
<a name="line-128"></a><span class='hs-comment'>-- record). Thus there could be a future collision between a current</span>
<a name="line-129"></a><span class='hs-comment'>-- group with basePos==offset and an updated record that acquires</span>
<a name="line-130"></a><span class='hs-comment'>-- basePos==offset. By excluding groups with basePos before the</span>
<a name="line-131"></a><span class='hs-comment'>-- current offset the collision between existing and future records</span>
<a name="line-132"></a><span class='hs-comment'>-- is avoided.</span>
<a name="line-133"></a><span class='hs-comment'>--</span>
<a name="line-134"></a><span class='hs-comment'>-- An entry in a group can only collide with that group's</span>
<a name="line-135"></a><span class='hs-comment'>-- descendents. compressOrbit sends each group to the compressGroup</span>
<a name="line-136"></a><span class='hs-comment'>-- command.</span>
<a name="line-137"></a><span class='hs-comment'>--</span>
<a name="line-138"></a><span class='hs-comment'>-- compressGroup on a single record checks whether it's Seq can be</span>
<a name="line-139"></a><span class='hs-comment'>-- cleared and if so it will clear it (and set ordinal to Nothing but</span>
<a name="line-140"></a><span class='hs-comment'>-- this this not particularly important).</span>
<a name="line-141"></a><span class='hs-comment'>--</span>
<a name="line-142"></a><span class='hs-comment'>-- compressGroup on many records sorts and groups the members and zips</span>
<a name="line-143"></a><span class='hs-comment'>-- the groups with their new ordinal value. The comparision is based</span>
<a name="line-144"></a><span class='hs-comment'>-- on the old ordinal value, then the inOrbit value, and then the (Seq</span>
<a name="line-145"></a><span class='hs-comment'>-- Position) data.</span>
<a name="line-146"></a><span class='hs-comment'>--</span>
<a name="line-147"></a><span class='hs-comment'>-- The old ordinals of the group will all be Nothing or all be Just,</span>
<a name="line-148"></a><span class='hs-comment'>-- but this condition is neither checked nor violations detected.</span>
<a name="line-149"></a><span class='hs-comment'>-- This comparision is justified because once records get different</span>
<a name="line-150"></a><span class='hs-comment'>-- ordinals assigned they will never change places.</span>
<a name="line-151"></a><span class='hs-comment'>--</span>
<a name="line-152"></a><span class='hs-comment'>-- The inOrbit Bool is only different if one of them has set the stop</span>
<a name="line-153"></a><span class='hs-comment'>-- position to at most (succ offset). They will obly be compared if</span>
<a name="line-154"></a><span class='hs-comment'>-- the other one leaves, an its stop position will be at least offset.</span>
<a name="line-155"></a><span class='hs-comment'>-- The previous sentence is justified by inspectin of the "assemble"</span>
<a name="line-156"></a><span class='hs-comment'>-- function in the TDFA module: there is no (PostUpdate</span>
<a name="line-157"></a><span class='hs-comment'>-- LeaveOrbitTask) so the largest possible value for the stop Tag is</span>
<a name="line-158"></a><span class='hs-comment'>-- (pred offset). Thus the record with inOrbit==False would beat (be</span>
<a name="line-159"></a><span class='hs-comment'>-- GT than) the record with inOrbit==True.</span>
<a name="line-160"></a><span class='hs-comment'>--</span>
<a name="line-161"></a><span class='hs-comment'>-- The Seq comparison is safe because the largest existing Position</span>
<a name="line-162"></a><span class='hs-comment'>-- value is (pred offset) and the smallest future Position value is</span>
<a name="line-163"></a><span class='hs-comment'>-- offset. The previous sentence is justified by inspectin of the</span>
<a name="line-164"></a><span class='hs-comment'>-- "assemble" function in the TDFA module: there is no (PostUpdate</span>
<a name="line-165"></a><span class='hs-comment'>-- EnterOrbitTags) so the largest possible value in the Seq is (pred</span>
<a name="line-166"></a><span class='hs-comment'>-- offset).</span>
<a name="line-167"></a><span class='hs-comment'>--</span>
<a name="line-168"></a><span class='hs-comment'>-- The updated Orbits get the new ordinal value and an empty (Seq</span>
<a name="line-169"></a><span class='hs-comment'>-- Position).</span>
<a name="line-170"></a>
<a name="line-171"></a> <span class='hs-varid'>compressOrbits</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>did</span> <span class='hs-varid'>offset</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-172"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>getStart</span> <span class='hs-varid'>state</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>start</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>err</span> <span class='hs-str'>"compressOrbit,1"</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varop'>!!</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>m_pos</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>state</span>
<a name="line-173"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>state</span><span class='hs-layout'>,</span><span class='hs-varid'>start</span><span class='hs-layout'>)</span>
<a name="line-174"></a> <span class='hs-varid'>cutoff</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>offset</span> <span class='hs-comment'>-</span> <span class='hs-num'>50</span> <span class='hs-comment'>-- Require: cutoff <= offset, MAGIC TUNABLE CONSTANT 50</span>
<a name="line-175"></a> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>getStart</span> <span class='hs-layout'>(</span><span class='hs-conid'>ISet</span><span class='hs-varop'>.</span><span class='hs-varid'>toAscList</span> <span class='hs-varid'>did</span><span class='hs-layout'>)</span>
<a name="line-176"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>compressOrbit</span> <span class='hs-varid'>tag</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-177"></a> <span class='hs-varid'>mos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>forM</span> <span class='hs-varid'>ss</span> <span class='hs-layout'>(</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>p</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>state</span><span class='hs-layout'>,</span><span class='hs-sel'>_start</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-178"></a> <span class='hs-varid'>mo</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-conid'>IMap</span><span class='hs-varop'>.</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'>m_orbit</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>state</span><span class='hs-layout'>)</span>
<a name="line-179"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mo</span> <span class='hs-keyword'>of</span>
<a name="line-180"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>orbits</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>basePos</span> <span class='hs-varid'>orbits</span> <span class='hs-varop'><</span> <span class='hs-varid'>cutoff</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-layout'>,</span><span class='hs-varid'>orbits</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-181"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-182"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span> <span class='hs-layout'>)</span>
<a name="line-183"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>compressGroup</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>state</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>orbit</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-layout'>(</span><span class='hs-varid'>getOrbits</span> <span class='hs-varid'>orbit</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-184"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span>
<a name="line-185"></a> <span class='hs-varid'>set</span> <span class='hs-layout'>(</span><span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s1</span><span class='hs-layout'>)</span> <span class='hs-varid'>state</span>
<a name="line-186"></a> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>tag</span> <span class='hs-varop'>$!</span> <span class='hs-layout'>(</span><span class='hs-varid'>orbit</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ordinal</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-varid'>getOrbits</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-187"></a> <span class='hs-varop'>=<<</span> <span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>state</span>
<a name="line-188"></a>
<a name="line-189"></a> <span class='hs-varid'>compressGroup</span> <span class='hs-varid'>gs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-190"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sortPos</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>b1</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'>b2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compare</span> <span class='hs-layout'>(</span><span class='hs-varid'>ordinal</span> <span class='hs-varid'>b1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>ordinal</span> <span class='hs-varid'>b2</span><span class='hs-layout'>)</span> <span class='hs-varop'>`mappend`</span>
<a name="line-191"></a> <span class='hs-varid'>compare</span> <span class='hs-layout'>(</span><span class='hs-varid'>inOrbit</span> <span class='hs-varid'>b2</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>inOrbit</span> <span class='hs-varid'>b1</span><span class='hs-layout'>)</span> <span class='hs-varop'>`mappend`</span>
<a name="line-192"></a> <span class='hs-varid'>comparePos</span> <span class='hs-layout'>(</span><span class='hs-varid'>viewl</span> <span class='hs-layout'>(</span><span class='hs-varid'>getOrbits</span> <span class='hs-varid'>b1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>viewl</span> <span class='hs-layout'>(</span><span class='hs-varid'>getOrbits</span> <span class='hs-varid'>b2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-193"></a> <span class='hs-varid'>groupPos</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>b1</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'>b2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ordinal</span> <span class='hs-varid'>b1</span> <span class='hs-varop'>==</span> <span class='hs-varid'>ordinal</span> <span class='hs-varid'>b2</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>getOrbits</span> <span class='hs-varid'>b1</span> <span class='hs-varop'>==</span> <span class='hs-varid'>getOrbits</span> <span class='hs-varid'>b2</span>
<a name="line-194"></a> <span class='hs-varid'>gs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>zip</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>..</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>(</span><span class='hs-varid'>groupBy</span> <span class='hs-varid'>groupPos</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sortBy</span> <span class='hs-varid'>sortPos</span> <span class='hs-varop'>$</span> <span class='hs-varid'>gs</span><span class='hs-layout'>)</span>
<a name="line-195"></a> <span class='hs-varid'>forM_</span> <span class='hs-varid'>gs'</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-layout'>(</span><span class='hs-varop'>!</span><span class='hs-varid'>n</span><span class='hs-layout'>,</span><span class='hs-varid'>eqs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-196"></a> <span class='hs-varid'>forM_</span> <span class='hs-varid'>eqs</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>state</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>orbit</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-197"></a> <span class='hs-varid'>set</span> <span class='hs-layout'>(</span><span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s1</span><span class='hs-layout'>)</span> <span class='hs-varid'>state</span>
<a name="line-198"></a> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>tag</span> <span class='hs-varop'>$!</span> <span class='hs-layout'>(</span><span class='hs-varid'>orbit</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ordinal</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>n</span><span class='hs-layout'>,</span> <span class='hs-varid'>getOrbits</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-199"></a> <span class='hs-varop'>=<<</span> <span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>state</span>
<a name="line-200"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sorter</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'>a1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>b1</span><span class='hs-layout'>)</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'>a2</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>b2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compare</span> <span class='hs-varid'>a1</span> <span class='hs-varid'>a2</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>compare</span> <span class='hs-layout'>(</span><span class='hs-varid'>basePos</span> <span class='hs-varid'>b1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>basePos</span> <span class='hs-varid'>b2</span><span class='hs-layout'>)</span>
<a name="line-201"></a> <span class='hs-varid'>grouper</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'>a1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>b1</span><span class='hs-layout'>)</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'>a2</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>b2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a1</span><span class='hs-varop'>==</span><span class='hs-varid'>a2</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>basePos</span> <span class='hs-varid'>b1</span> <span class='hs-varop'>==</span> <span class='hs-varid'>basePos</span> <span class='hs-varid'>b2</span>
<a name="line-202"></a> <span class='hs-varid'>orbitGroups</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupBy</span> <span class='hs-varid'>grouper</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sortBy</span> <span class='hs-varid'>sorter</span> <span class='hs-varop'>.</span> <span class='hs-varid'>catMaybes</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mos</span>
<a name="line-203"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>compressGroup</span> <span class='hs-varid'>orbitGroups</span>
<a name="line-204"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>compressOrbit</span> <span class='hs-varid'>orbitTags</span>
<a name="line-205"></a>
<a name="line-206"></a><span class='hs-comment'>-- findTrans has to (part 1) decide, for each destination, "which" of</span>
<a name="line-207"></a><span class='hs-comment'>-- zero or more source NFA states will be the chosen source. Then it</span>
<a name="line-208"></a><span class='hs-comment'>-- has to (part 2) perform the transition or spawn. It keeps track of</span>
<a name="line-209"></a><span class='hs-comment'>-- the starting index while doing so, and compares the earliest start</span>
<a name="line-210"></a><span class='hs-comment'>-- with the stored winners. (part 3) If some winners are ready to be</span>
<a name="line-211"></a><span class='hs-comment'>-- released then the future continuation of the search is placed in</span>
<a name="line-212"></a><span class='hs-comment'>-- "storeNext". If no winners are ready to be released then the</span>
<a name="line-213"></a><span class='hs-comment'>-- computation continues immediately.</span>
<a name="line-214"></a>
<a name="line-215"></a> <span class='hs-varid'>findTrans</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>did</span> <span class='hs-varid'>did'</span> <span class='hs-varid'>dt'</span> <span class='hs-varid'>dtrans</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>prev'</span> <span class='hs-varid'>input'</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.findTrans" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-216"></a> <span class='hs-comment'>-- findTrans part 0</span>
<a name="line-217"></a> <span class='hs-comment'>-- MAGIC TUNABLE CONSTANT 100 (and 100-1). TODO: (offset .&. 127 == 127) instead?</span>
<a name="line-218"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>orbitTags</span><span class='hs-layout'>)</span> <span class='hs-varop'>&&</span> <span class='hs-layout'>(</span><span class='hs-varid'>offset</span> <span class='hs-varop'>`rem`</span> <span class='hs-num'>100</span> <span class='hs-varop'>==</span> <span class='hs-num'>99</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>compressOrbits</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>did</span> <span class='hs-varid'>offset</span><span class='hs-layout'>)</span>
<a name="line-219"></a> <span class='hs-comment'>-- findTrans part 1</span>
<a name="line-220"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>findTransTo</span> <span class='hs-layout'>(</span><span class='hs-varid'>destIndex</span><span class='hs-layout'>,</span><span class='hs-varid'>sources</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>sources</span> <span class='hs-keyglyph'>=</span>
<a name="line-221"></a> <span class='hs-varid'>set</span> <span class='hs-varid'>which</span> <span class='hs-varid'>destIndex</span> <span class='hs-varid'>noSource</span>
<a name="line-222"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-223"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>prep</span> <span class='hs-layout'>(</span><span class='hs-varid'>sourceIndex</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-sel'>_dopa</span><span class='hs-layout'>,</span><span class='hs-varid'>instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.findTrans.prep" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-224"></a> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>err</span> <span class='hs-varop'>$</span> <span class='hs-str'>"findTrans,1 : "</span><span class='hs-varop'>++</span><span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>sourceIndex</span><span class='hs-layout'>,</span><span class='hs-varid'>destIndex</span><span class='hs-layout'>,</span><span class='hs-varid'>did'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>return</span>
<a name="line-225"></a> <span class='hs-varop'>=<<</span> <span class='hs-varid'>m_pos</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>sourceIndex</span>
<a name="line-226"></a> <span class='hs-varid'>orbit</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>sourceIndex</span>
<a name="line-227"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>orbit'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>orbit</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>orbit</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>newOrbits</span> <span class='hs-varid'>instructions</span><span class='hs-layout'>)</span>
<a name="line-228"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>sourceIndex</span><span class='hs-layout'>,</span><span class='hs-varid'>instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>pos</span><span class='hs-layout'>,</span><span class='hs-varid'>orbit'</span><span class='hs-layout'>)</span>
<a name="line-229"></a> <span class='hs-varid'>challenge</span> <span class='hs-varid'>x1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-sel'>_si1</span><span class='hs-layout'>,</span><span class='hs-varid'>ins1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-sel'>_p1</span><span class='hs-layout'>,</span><span class='hs-sel'>_o1</span><span class='hs-layout'>)</span> <span class='hs-varid'>x2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-sel'>_si2</span><span class='hs-layout'>,</span><span class='hs-varid'>ins2</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-sel'>_p2</span><span class='hs-layout'>,</span><span class='hs-sel'>_o2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.findTrans.challenge" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-230"></a> <span class='hs-varid'>check</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>comp</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>x1</span> <span class='hs-layout'>(</span><span class='hs-varid'>newPos</span> <span class='hs-varid'>ins1</span><span class='hs-layout'>)</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-varid'>newPos</span> <span class='hs-varid'>ins2</span><span class='hs-layout'>)</span>
<a name="line-231"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>check</span><span class='hs-varop'>==</span><span class='hs-conid'>LT</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x2</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x1</span>
<a name="line-232"></a> <span class='hs-layout'>(</span><span class='hs-varid'>first</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'>mapM</span> <span class='hs-varid'>prep</span> <span class='hs-layout'>(</span><span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>sources</span><span class='hs-layout'>)</span>
<a name="line-233"></a> <span class='hs-varid'>set</span> <span class='hs-varid'>which</span> <span class='hs-varid'>destIndex</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>foldM</span> <span class='hs-varid'>challenge</span> <span class='hs-varid'>first</span> <span class='hs-varid'>rest</span>
<a name="line-234"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>dl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>dtrans</span>
<a name="line-235"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>findTransTo</span> <span class='hs-varid'>dl</span>
<a name="line-236"></a> <span class='hs-comment'>-- findTrans part 2</span>
<a name="line-237"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>performTransTo</span> <span class='hs-layout'>(</span><span class='hs-varid'>destIndex</span><span class='hs-layout'>,</span><span class='hs-sel'>_sources</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.findTrans.performTransTo" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-238"></a> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>sourceIndex</span><span class='hs-layout'>,</span><span class='hs-sel'>_instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-sel'>_pos</span><span class='hs-layout'>,</span><span class='hs-sel'>_orbit'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>which</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>destIndex</span>
<a name="line-239"></a> <span class='hs-varid'>unless</span> <span class='hs-layout'>(</span><span class='hs-varid'>sourceIndex</span> <span class='hs-varop'>==</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-240"></a> <span class='hs-layout'>(</span><span class='hs-varid'>updateCopy</span> <span class='hs-varid'>x</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>destIndex</span><span class='hs-layout'>)</span>
<a name="line-241"></a> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>performTransTo</span> <span class='hs-varid'>dl</span>
<a name="line-242"></a> <span class='hs-comment'>-- findTrans part 3</span>
<a name="line-243"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>offset'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>offset</span> <span class='hs-keyword'>in</span> <span class='hs-varid'>seq</span> <span class='hs-varid'>offset'</span> <span class='hs-varop'>$</span> <span class='hs-varid'>next</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>did'</span> <span class='hs-varid'>dt'</span> <span class='hs-varid'>offset'</span> <span class='hs-varid'>prev'</span> <span class='hs-varid'>input'</span>
<a name="line-244"></a>
<a name="line-245"></a><span class='hs-comment'>-- The "newWinnerThenProceed" can find both a new non-empty winner and</span>
<a name="line-246"></a><span class='hs-comment'>-- a new empty winner. A new non-empty winner can cause some of the</span>
<a name="line-247"></a><span class='hs-comment'>-- NFA states that comprise the DFA state to be eliminated, and if the</span>
<a name="line-248"></a><span class='hs-comment'>-- startState is eliminated then it must then be respawned. And</span>
<a name="line-249"></a><span class='hs-comment'>-- imperative flag setting and resetting style is used.</span>
<a name="line-250"></a><span class='hs-comment'>--</span>
<a name="line-251"></a><span class='hs-comment'>-- A non-empty winner from the startState might obscure a potential</span>
<a name="line-252"></a><span class='hs-comment'>-- empty winner (form the startState at the current offset). This</span>
<a name="line-253"></a><span class='hs-comment'>-- winEmpty possibility is also checked for. (unit test pattern ".*")</span>
<a name="line-254"></a><span class='hs-comment'>-- (futher test "(.+|.+.)*" on "aa\n")</span>
<a name="line-255"></a>
<a name="line-256"></a> <span class='hs-comment'>{-# INLINE processWinner #-}</span>
<a name="line-257"></a> <span class='hs-varid'>processWinner</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>w</span> <span class='hs-varid'>offset</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.newWinnerThenProceed" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-258"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>prep</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>sourceIndex</span><span class='hs-layout'>,</span><span class='hs-varid'>instructions</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.newWinnerThenProceed.prep" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-259"></a> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>err</span> <span class='hs-str'>"newWinnerThenProceed,1"</span><span class='hs-layout'>)</span> <span class='hs-varid'>return</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>m_pos</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>sourceIndex</span>
<a name="line-260"></a> <span class='hs-varid'>startPos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>!!</span> <span class='hs-num'>0</span>
<a name="line-261"></a> <span class='hs-varid'>orbit</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>sourceIndex</span>
<a name="line-262"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>orbit'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>orbit</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>orbit</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>newOrbits</span> <span class='hs-varid'>instructions</span><span class='hs-layout'>)</span>
<a name="line-263"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>startPos</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-varid'>pos</span><span class='hs-layout'>,</span><span class='hs-varid'>orbit'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-264"></a> <span class='hs-varid'>challenge</span> <span class='hs-varid'>x1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-sel'>_si1</span><span class='hs-layout'>,</span><span class='hs-varid'>ins1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-sel'>_p1</span><span class='hs-layout'>,</span><span class='hs-sel'>_o1</span><span class='hs-layout'>)</span> <span class='hs-varid'>x2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-sel'>_si2</span><span class='hs-layout'>,</span><span class='hs-varid'>ins2</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-sel'>_p2</span><span class='hs-layout'>,</span><span class='hs-sel'>_o2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.newWinnerThenProceed.challenge" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-265"></a> <span class='hs-varid'>check</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>comp</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>x1</span> <span class='hs-layout'>(</span><span class='hs-varid'>newPos</span> <span class='hs-varid'>ins1</span><span class='hs-layout'>)</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-varid'>newPos</span> <span class='hs-varid'>ins2</span><span class='hs-layout'>)</span>
<a name="line-266"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>check</span><span class='hs-varop'>==</span><span class='hs-conid'>LT</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x2</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x1</span>
<a name="line-267"></a> <span class='hs-varid'>prep'd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>prep</span> <span class='hs-layout'>(</span><span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>toList</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-268"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>prep'd</span> <span class='hs-keyword'>of</span>
<a name="line-269"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-270"></a> <span class='hs-layout'>(</span><span class='hs-varid'>first</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'>newWinner</span> <span class='hs-varid'>offset</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>foldM</span> <span class='hs-varid'>challenge</span> <span class='hs-varid'>first</span> <span class='hs-varid'>rest</span>
<a name="line-271"></a>
<a name="line-272"></a> <span class='hs-varid'>newWinner</span> <span class='hs-varid'>preTag</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-sel'>_sourceIndex</span><span class='hs-layout'>,</span><span class='hs-varid'>winInstructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>oldPos</span><span class='hs-layout'>,</span><span class='hs-sel'>_newOrbit</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.newWinner" #-}</span> <span class='hs-keyword'>do</span>
<a name="line-273"></a> <span class='hs-varid'>newerPos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newA_</span> <span class='hs-varid'>b_tags</span>
<a name="line-274"></a> <span class='hs-varid'>copySTU</span> <span class='hs-varid'>oldPos</span> <span class='hs-varid'>newerPos</span>
<a name="line-275"></a> <span class='hs-varid'>doActions</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>newerPos</span> <span class='hs-layout'>(</span><span class='hs-varid'>newPos</span> <span class='hs-varid'>winInstructions</span><span class='hs-layout'>)</span>
<a name="line-276"></a> <span class='hs-varid'>putMQ</span> <span class='hs-layout'>(</span><span class='hs-conid'>WScratch</span> <span class='hs-varid'>newerPos</span><span class='hs-layout'>)</span> <span class='hs-varid'>winQ</span>
<a name="line-277"></a>
<a name="line-278"></a> <span class='hs-varid'>finalizeWinner</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-279"></a> <span class='hs-varid'>mWinner</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-layout'>(</span><span class='hs-varid'>mq_mWin</span> <span class='hs-varid'>winQ</span><span class='hs-layout'>)</span>
<a name="line-280"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mWinner</span> <span class='hs-keyword'>of</span>
<a name="line-281"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-282"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>winner</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>resetMQ</span> <span class='hs-varid'>winQ</span> <span class='hs-varop'>>></span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>tagsToGroupsST</span> <span class='hs-varid'>aGroups</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>winner</span><span class='hs-keyglyph'>]</span>
<a name="line-283"></a>
<a name="line-284"></a> <span class='hs-comment'>-- goNext then ends with the next statement</span>
<a name="line-285"></a> <span class='hs-varid'>next</span> <span class='hs-varid'>s1In</span> <span class='hs-varid'>s2In</span> <span class='hs-varid'>didIn</span> <span class='hs-varid'>dtIn</span> <span class='hs-varid'>offsetIn</span> <span class='hs-varid'>prevIn</span> <span class='hs-varid'>inputIn</span>
<a name="line-286"></a>
<a name="line-287"></a><a name="doActions"></a><span class='hs-comment'>{-# INLINE doActions #-}</span>
<a name="line-288"></a><span class='hs-definition'>doActions</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Tag</span><span class='hs-layout'>,</span> <span class='hs-conid'>Action</span><span class='hs-layout'>)</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'>()</span>
<a name="line-289"></a><span class='hs-definition'>doActions</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>ins</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>doAction</span> <span class='hs-varid'>ins</span> <span class='hs-keyword'>where</span>
<a name="line-290"></a> <span class='hs-varid'>postTag</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>preTag</span>
<a name="line-291"></a> <span class='hs-varid'>doAction</span> <span class='hs-layout'>(</span><span class='hs-varid'>tag</span><span class='hs-layout'>,</span><span class='hs-conid'>SetPre</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>set</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>preTag</span>
<a name="line-292"></a> <span class='hs-varid'>doAction</span> <span class='hs-layout'>(</span><span class='hs-varid'>tag</span><span class='hs-layout'>,</span><span class='hs-conid'>SetPost</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>set</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>postTag</span>
<a name="line-293"></a> <span class='hs-varid'>doAction</span> <span class='hs-layout'>(</span><span class='hs-varid'>tag</span><span class='hs-layout'>,</span><span class='hs-conid'>SetVal</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>set</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>v</span>
<a name="line-294"></a>
<a name="line-295"></a><span class='hs-comment'>----</span>
<a name="line-296"></a>
<a name="line-297"></a><a name="mkTest"></a><span class='hs-comment'>{-# INLINE mkTest #-}</span>
<a name="line-298"></a><span class='hs-definition'>mkTest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Uncons</span> <span class='hs-varid'>text</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>WhichTest</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Index</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>text</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-299"></a><span class='hs-definition'>mkTest</span> <span class='hs-varid'>isMultiline</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isMultiline</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>test_multiline</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>test_singleline</span>
<a name="line-300"></a>
<a name="line-301"></a><span class='hs-comment'>----</span>
<a name="line-302"></a>
<a name="line-303"></a><span class='hs-comment'>{- MUTABLE WINNER QUEUE -}</span>
<a name="line-304"></a>
<a name="line-305"></a><a name="MQ"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>MQ</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MQ</span> <span class='hs-layout'>{</span> <span class='hs-varid'>mq_mWin</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>STRef</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>WScratch</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-306"></a>
<a name="line-307"></a><a name="newMQ"></a><span class='hs-definition'>newMQ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>MQ</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-308"></a><span class='hs-definition'>newMQ</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-309"></a> <span class='hs-varid'>mWin</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-conid'>Nothing</span>
<a name="line-310"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>MQ</span> <span class='hs-varid'>mWin</span><span class='hs-layout'>)</span>
<a name="line-311"></a>
<a name="line-312"></a><a name="resetMQ"></a><span class='hs-definition'>resetMQ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MQ</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-313"></a><span class='hs-definition'>resetMQ</span> <span class='hs-layout'>(</span><span class='hs-conid'>MQ</span> <span class='hs-layout'>{</span><span class='hs-varid'>mq_mWin</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>mWin</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-314"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>mWin</span> <span class='hs-conid'>Nothing</span>
<a name="line-315"></a>
<a name="line-316"></a><a name="putMQ"></a><span class='hs-definition'>putMQ</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>WScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MQ</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-317"></a><span class='hs-definition'>putMQ</span> <span class='hs-varid'>ws</span> <span class='hs-layout'>(</span><span class='hs-conid'>MQ</span> <span class='hs-layout'>{</span><span class='hs-varid'>mq_mWin</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>mWin</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-318"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>mWin</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span>
<a name="line-319"></a>
<a name="line-320"></a><span class='hs-comment'>{- MUTABLE SCRATCH DATA STRUCTURES -}</span>
<a name="line-321"></a>
<a name="line-322"></a><a name="SScratch"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SScratch</span> <span class='hs-layout'>{</span> <span class='hs-sel'>_s_1</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>MScratch</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-323"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_s_2</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>MScratch</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-324"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_s_rest</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span> <span class='hs-conid'>MQ</span> <span class='hs-varid'>s</span>
<a name="line-325"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>BlankScratch</span> <span class='hs-varid'>s</span>
<a name="line-326"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>STArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Index</span><span class='hs-layout'>,</span><span class='hs-conid'>Instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>,</span><span class='hs-conid'>OrbitLog</span><span class='hs-layout'>)</span>
<a name="line-327"></a> <span class='hs-layout'>)</span>
<a name="line-328"></a> <span class='hs-layout'>}</span>
<a name="line-329"></a><a name="MScratch"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MScratch</span> <span class='hs-layout'>{</span> <span class='hs-varid'>m_pos</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>STArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-330"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>m_orbit</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>STArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Index</span> <span class='hs-conid'>OrbitLog</span><span class='hs-layout'>)</span>
<a name="line-331"></a> <span class='hs-layout'>}</span>
<a name="line-332"></a><a name="BlankScratch"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>BlankScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BlankScratch</span> <span class='hs-layout'>{</span> <span class='hs-sel'>_blank_pos</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>)</span>
<a name="line-333"></a> <span class='hs-layout'>}</span>
<a name="line-334"></a><a name="WScratch"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>WScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WScratch</span> <span class='hs-layout'>{</span> <span class='hs-varid'>w_pos</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>)</span>
<a name="line-335"></a> <span class='hs-layout'>}</span>
<a name="line-336"></a>
<a name="line-337"></a><span class='hs-comment'>{- DEBUGGING HELPERS -}</span>
<a name="line-338"></a>
<a name="line-339"></a><span class='hs-comment'>{-
<a name="line-340"></a>indent :: String -> String
<a name="line-341"></a>indent xs = ' ':' ':xs
<a name="line-342"></a>
<a name="line-343"></a>showMS :: MScratch s -> Index -> ST s String
<a name="line-344"></a>showMS s i = do
<a name="line-345"></a> ma <- m_pos s !! i
<a name="line-346"></a> mc <- m_orbit s !! i
<a name="line-347"></a> a <- case ma of
<a name="line-348"></a> Nothing -> return "No pos"
<a name="line-349"></a> Just pos -> fmap show (getAssocs pos)
<a name="line-350"></a> let c = show mc
<a name="line-351"></a> return $ unlines [ "MScratch, index = "++show i
<a name="line-352"></a> , indent a
<a name="line-353"></a> , indent c]
<a name="line-354"></a>
<a name="line-355"></a>showWS :: WScratch s -> ST s String
<a name="line-356"></a>showWS (WScratch pos) = do
<a name="line-357"></a> a <- getAssocs pos
<a name="line-358"></a> return $ unlines [ "WScratch"
<a name="line-359"></a> , indent (show a)]
<a name="line-360"></a>-}</span>
<a name="line-361"></a><span class='hs-comment'>{- CREATING INITIAL MUTABLE SCRATCH DATA STRUCTURES -}</span>
<a name="line-362"></a>
<a name="line-363"></a><a name="newA"></a><span class='hs-comment'>{-# INLINE newA #-}</span>
<a name="line-364"></a><span class='hs-definition'>newA</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>e</span> <span class='hs-layout'>(</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>Tag</span><span class='hs-layout'>,</span><span class='hs-conid'>Tag</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-365"></a><span class='hs-definition'>newA</span> <span class='hs-varid'>b_tags</span> <span class='hs-varid'>initial</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newArray</span> <span class='hs-varid'>b_tags</span> <span class='hs-varid'>initial</span>
<a name="line-366"></a>
<a name="line-367"></a><a name="newA_"></a><span class='hs-comment'>{-# INLINE newA_ #-}</span>
<a name="line-368"></a><span class='hs-definition'>newA_</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>e</span> <span class='hs-layout'>(</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>Tag</span><span class='hs-layout'>,</span><span class='hs-conid'>Tag</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-369"></a><span class='hs-definition'>newA_</span> <span class='hs-varid'>b_tags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newArray_</span> <span class='hs-varid'>b_tags</span>
<a name="line-370"></a>
<a name="line-371"></a><a name="newScratch"></a><span class='hs-definition'>newScratch</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Index</span><span class='hs-layout'>,</span><span class='hs-conid'>Index</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Tag</span><span class='hs-layout'>,</span><span class='hs-conid'>Tag</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>SScratch</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-372"></a><span class='hs-definition'>newScratch</span> <span class='hs-varid'>b_index</span> <span class='hs-varid'>b_tags</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-373"></a> <span class='hs-varid'>s1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newMScratch</span> <span class='hs-varid'>b_index</span>
<a name="line-374"></a> <span class='hs-varid'>s2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newMScratch</span> <span class='hs-varid'>b_index</span>
<a name="line-375"></a> <span class='hs-varid'>winQ</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newMQ</span>
<a name="line-376"></a> <span class='hs-varid'>blank</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fmap</span> <span class='hs-conid'>BlankScratch</span> <span class='hs-layout'>(</span><span class='hs-varid'>newA</span> <span class='hs-varid'>b_tags</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-377"></a> <span class='hs-varid'>which</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varid'>newArray</span> <span class='hs-varid'>b_index</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>,</span><span class='hs-varid'>err</span> <span class='hs-str'>"newScratch which 1"</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>err</span> <span class='hs-str'>"newScratch which 2"</span><span class='hs-layout'>,</span><span class='hs-varid'>err</span> <span class='hs-str'>"newScratch which 3"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-378"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>SScratch</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>s2</span> <span class='hs-layout'>(</span><span class='hs-varid'>winQ</span><span class='hs-layout'>,</span><span class='hs-varid'>blank</span><span class='hs-layout'>,</span><span class='hs-varid'>which</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-379"></a>
<a name="line-380"></a><a name="newMScratch"></a><span class='hs-definition'>newMScratch</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Index</span><span class='hs-layout'>,</span><span class='hs-conid'>Index</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>MScratch</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-381"></a><span class='hs-definition'>newMScratch</span> <span class='hs-varid'>b_index</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-382"></a> <span class='hs-varid'>pos's</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newArray</span> <span class='hs-varid'>b_index</span> <span class='hs-conid'>Nothing</span>
<a name="line-383"></a> <span class='hs-varid'>orbit's</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newArray</span> <span class='hs-varid'>b_index</span> <span class='hs-varid'>mempty</span>
<a name="line-384"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>MScratch</span> <span class='hs-varid'>pos's</span> <span class='hs-varid'>orbit's</span><span class='hs-layout'>)</span>
<a name="line-385"></a>
<a name="line-386"></a><span class='hs-comment'>{- COMPOSE A FUNCTION CLOSURE TO COMPARE TAG VALUES -}</span>
<a name="line-387"></a>
<a name="line-388"></a><a name="F"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>F</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>F</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>F</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-389"></a><a name="C"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>C</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Position</span>
<a name="line-390"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>IntMap</span> <span class='hs-conid'>Orbits</span><span class='hs-layout'>)</span>
<a name="line-391"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Action</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-392"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>IntMap</span> <span class='hs-conid'>Orbits</span><span class='hs-layout'>)</span>
<a name="line-393"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Action</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-394"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Ordering</span>
<a name="line-395"></a>
<a name="line-396"></a><a name="orderOf"></a><span class='hs-comment'>{-# INLINE orderOf #-}</span>
<a name="line-397"></a><span class='hs-definition'>orderOf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Action</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Action</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ordering</span>
<a name="line-398"></a><span class='hs-definition'>orderOf</span> <span class='hs-varid'>post1</span> <span class='hs-varid'>post2</span> <span class='hs-keyglyph'>=</span>
<a name="line-399"></a> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>post1</span><span class='hs-layout'>,</span><span class='hs-varid'>post2</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-400"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SetPre</span><span class='hs-layout'>,</span><span class='hs-conid'>SetPre</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EQ</span>
<a name="line-401"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SetPost</span><span class='hs-layout'>,</span><span class='hs-conid'>SetPost</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EQ</span>
<a name="line-402"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SetPre</span><span class='hs-layout'>,</span><span class='hs-conid'>SetPost</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LT</span>
<a name="line-403"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SetPost</span><span class='hs-layout'>,</span><span class='hs-conid'>SetPre</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GT</span>
<a name="line-404"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SetVal</span> <span class='hs-varid'>v1</span><span class='hs-layout'>,</span><span class='hs-conid'>SetVal</span> <span class='hs-varid'>v2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>compare</span> <span class='hs-varid'>v1</span> <span class='hs-varid'>v2</span>
<a name="line-405"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-varop'>$</span> <span class='hs-str'>"bestTrans.compareWith.choose sees incomparable "</span><span class='hs-varop'>++</span><span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>post1</span><span class='hs-layout'>,</span><span class='hs-varid'>post2</span><span class='hs-layout'>)</span>
<a name="line-406"></a>
<a name="line-407"></a><a name="ditzyComp'3"></a><span class='hs-definition'>ditzyComp'3</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>s</span><span class='hs-varop'>.</span> <span class='hs-conid'>Array</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>OP</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span> <span class='hs-varid'>s</span>
<a name="line-408"></a><span class='hs-definition'>ditzyComp'3</span> <span class='hs-varid'>aTagOP</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>comp0</span> <span class='hs-keyword'>where</span>
<a name="line-409"></a> <span class='hs-layout'>(</span><span class='hs-conid'>F</span> <span class='hs-varid'>comp1</span><span class='hs-conop'>:</span><span class='hs-varid'>compsRest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>allcomps</span> <span class='hs-num'>1</span>
<a name="line-410"></a>
<a name="line-411"></a> <span class='hs-varid'>comp0</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>C</span> <span class='hs-varid'>s</span>
<a name="line-412"></a> <span class='hs-varid'>comp0</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-sel'>_state1</span><span class='hs-layout'>,</span><span class='hs-varid'>pos1</span><span class='hs-layout'>,</span><span class='hs-sel'>_orbit1'</span><span class='hs-layout'>)</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-sel'>_state2</span><span class='hs-layout'>,</span><span class='hs-varid'>pos2</span><span class='hs-layout'>,</span><span class='hs-sel'>_orbit2'</span><span class='hs-layout'>)</span> <span class='hs-varid'>np2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-413"></a> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftM2</span> <span class='hs-varid'>compare</span> <span class='hs-layout'>(</span><span class='hs-varid'>pos2</span><span class='hs-varop'>!!</span><span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>pos1</span><span class='hs-varop'>!!</span><span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- reversed since Minimize</span>
<a name="line-414"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>c</span> <span class='hs-keyword'>of</span>
<a name="line-415"></a> <span class='hs-conid'>EQ</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>comp1</span> <span class='hs-varid'>compsRest</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span>
<a name="line-416"></a> <span class='hs-varid'>answer</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>answer</span>
<a name="line-417"></a>
<a name="line-418"></a> <span class='hs-varid'>allcomps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Tag</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>F</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>]</span>
<a name="line-419"></a> <span class='hs-varid'>allcomps</span> <span class='hs-varid'>tag</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>tag</span> <span class='hs-varop'>></span> <span class='hs-varid'>top</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>F</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>EQ</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-420"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span>
<a name="line-421"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>aTagOP</span> <span class='hs-varop'>!</span> <span class='hs-varid'>tag</span> <span class='hs-keyword'>of</span>
<a name="line-422"></a> <span class='hs-conid'>Orbit</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>F</span> <span class='hs-layout'>(</span><span class='hs-varid'>challenge_Orb</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>allcomps</span> <span class='hs-layout'>(</span><span class='hs-varid'>succ</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span>
<a name="line-423"></a> <span class='hs-conid'>Maximize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>F</span> <span class='hs-layout'>(</span><span class='hs-varid'>challenge_Max</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>allcomps</span> <span class='hs-layout'>(</span><span class='hs-varid'>succ</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span>
<a name="line-424"></a> <span class='hs-conid'>Ignore</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>F</span> <span class='hs-layout'>(</span><span class='hs-varid'>challenge_Ignore</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>allcomps</span> <span class='hs-layout'>(</span><span class='hs-varid'>succ</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span>
<a name="line-425"></a> <span class='hs-conid'>Minimize</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-str'>"allcomps Minimize"</span>
<a name="line-426"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>top</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>snd</span> <span class='hs-layout'>(</span><span class='hs-varid'>bounds</span> <span class='hs-varid'>aTagOP</span><span class='hs-layout'>)</span>
<a name="line-427"></a>
<a name="line-428"></a> <span class='hs-varid'>challenge_Ignore</span> <span class='hs-varop'>!</span><span class='hs-varid'>tag</span> <span class='hs-layout'>(</span><span class='hs-conid'>F</span> <span class='hs-varid'>next</span><span class='hs-conop'>:</span><span class='hs-varid'>comps</span><span class='hs-layout'>)</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span> <span class='hs-keyglyph'>=</span>
<a name="line-429"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>np1</span> <span class='hs-keyword'>of</span>
<a name="line-430"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>t1</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>rest1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t1</span><span class='hs-varop'>==</span><span class='hs-varid'>tag</span> <span class='hs-keyglyph'>-></span>
<a name="line-431"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>np2</span> <span class='hs-keyword'>of</span>
<a name="line-432"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>t2</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>rest2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t2</span><span class='hs-varop'>==</span><span class='hs-varid'>tag</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>rest1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>rest2</span>
<a name="line-433"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>rest1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span>
<a name="line-434"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-435"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>np2</span> <span class='hs-keyword'>of</span>
<a name="line-436"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>t2</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>rest2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t2</span><span class='hs-varop'>==</span><span class='hs-varid'>tag</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>rest2</span>
<a name="line-437"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span>
<a name="line-438"></a> <span class='hs-varid'>challenge_Ignore</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>err</span> <span class='hs-str'>"impossible 2347867"</span>
<a name="line-439"></a>
<a name="line-440"></a> <span class='hs-varid'>challenge_Max</span> <span class='hs-varop'>!</span><span class='hs-varid'>tag</span> <span class='hs-layout'>(</span><span class='hs-conid'>F</span> <span class='hs-varid'>next</span><span class='hs-conop'>:</span><span class='hs-varid'>comps</span><span class='hs-layout'>)</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-sel'>_state1</span><span class='hs-layout'>,</span><span class='hs-varid'>pos1</span><span class='hs-layout'>,</span><span class='hs-sel'>_orbit1'</span><span class='hs-layout'>)</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-sel'>_state2</span><span class='hs-layout'>,</span><span class='hs-varid'>pos2</span><span class='hs-layout'>,</span><span class='hs-sel'>_orbit2'</span><span class='hs-layout'>)</span> <span class='hs-varid'>np2</span> <span class='hs-keyglyph'>=</span>
<a name="line-441"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>np1</span> <span class='hs-keyword'>of</span>
<a name="line-442"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>t1</span><span class='hs-layout'>,</span><span class='hs-varid'>b1</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>rest1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t1</span><span class='hs-varop'>==</span><span class='hs-varid'>tag</span> <span class='hs-keyglyph'>-></span>
<a name="line-443"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>np2</span> <span class='hs-keyword'>of</span>
<a name="line-444"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>t2</span><span class='hs-layout'>,</span><span class='hs-varid'>b2</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>rest2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t2</span><span class='hs-varop'>==</span><span class='hs-varid'>tag</span> <span class='hs-keyglyph'>-></span>
<a name="line-445"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>b1</span><span class='hs-varop'>==</span><span class='hs-varid'>b2</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>rest1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>rest2</span>
<a name="line-446"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>orderOf</span> <span class='hs-varid'>b1</span> <span class='hs-varid'>b2</span><span class='hs-layout'>)</span>
<a name="line-447"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-448"></a> <span class='hs-varid'>p2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos2</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>tag</span>
<a name="line-449"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>p1</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>b1</span> <span class='hs-keyword'>of</span> <span class='hs-conid'>SetPre</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>preTag</span>
<a name="line-450"></a> <span class='hs-conid'>SetPost</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>succ</span> <span class='hs-varid'>preTag</span>
<a name="line-451"></a> <span class='hs-conid'>SetVal</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>v</span>
<a name="line-452"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>p1</span><span class='hs-varop'>==</span><span class='hs-varid'>p2</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>rest1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span>
<a name="line-453"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>compare</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span><span class='hs-layout'>)</span>
<a name="line-454"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-455"></a> <span class='hs-varid'>p1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>tag</span>
<a name="line-456"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>np2</span> <span class='hs-keyword'>of</span>
<a name="line-457"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>t2</span><span class='hs-layout'>,</span><span class='hs-varid'>b2</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>rest2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t2</span><span class='hs-varop'>==</span><span class='hs-varid'>tag</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-458"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>p2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>b2</span> <span class='hs-keyword'>of</span> <span class='hs-conid'>SetPre</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>preTag</span>
<a name="line-459"></a> <span class='hs-conid'>SetPost</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>succ</span> <span class='hs-varid'>preTag</span>
<a name="line-460"></a> <span class='hs-conid'>SetVal</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>v</span>
<a name="line-461"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>p1</span><span class='hs-varop'>==</span><span class='hs-varid'>p2</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>rest2</span>
<a name="line-462"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>compare</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span><span class='hs-layout'>)</span>
<a name="line-463"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-464"></a> <span class='hs-varid'>p2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos2</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>tag</span>
<a name="line-465"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>p1</span><span class='hs-varop'>==</span><span class='hs-varid'>p2</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span>
<a name="line-466"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>compare</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span><span class='hs-layout'>)</span>
<a name="line-467"></a> <span class='hs-varid'>challenge_Max</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>err</span> <span class='hs-str'>"impossible 9384324"</span>
<a name="line-468"></a>
<a name="line-469"></a> <span class='hs-varid'>challenge_Orb</span> <span class='hs-varop'>!</span><span class='hs-varid'>tag</span> <span class='hs-layout'>(</span><span class='hs-conid'>F</span> <span class='hs-varid'>next</span><span class='hs-conop'>:</span><span class='hs-varid'>comps</span><span class='hs-layout'>)</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-sel'>_state1</span><span class='hs-layout'>,</span><span class='hs-sel'>_pos1</span><span class='hs-layout'>,</span><span class='hs-varid'>orbit1'</span><span class='hs-layout'>)</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-sel'>_state2</span><span class='hs-layout'>,</span><span class='hs-sel'>_pos2</span><span class='hs-layout'>,</span><span class='hs-varid'>orbit2'</span><span class='hs-layout'>)</span> <span class='hs-varid'>np2</span> <span class='hs-keyglyph'>=</span>
<a name="line-470"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>s1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>orbit1'</span>
<a name="line-471"></a> <span class='hs-varid'>s2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IMap</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>tag</span> <span class='hs-varid'>orbit2'</span>
<a name="line-472"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>s1</span><span class='hs-layout'>,</span><span class='hs-varid'>s2</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-473"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span>
<a name="line-474"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>o1</span><span class='hs-layout'>,</span><span class='hs-conid'>Just</span> <span class='hs-varid'>o2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>inOrbit</span> <span class='hs-varid'>o1</span> <span class='hs-varop'>==</span> <span class='hs-varid'>inOrbit</span> <span class='hs-varid'>o2</span> <span class='hs-keyglyph'>-></span>
<a name="line-475"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>compare</span> <span class='hs-layout'>(</span><span class='hs-varid'>ordinal</span> <span class='hs-varid'>o1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>ordinal</span> <span class='hs-varid'>o2</span><span class='hs-layout'>)</span> <span class='hs-varop'>`mappend`</span>
<a name="line-476"></a> <span class='hs-varid'>comparePos</span> <span class='hs-layout'>(</span><span class='hs-varid'>viewl</span> <span class='hs-layout'>(</span><span class='hs-varid'>getOrbits</span> <span class='hs-varid'>o1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>viewl</span> <span class='hs-layout'>(</span><span class='hs-varid'>getOrbits</span> <span class='hs-varid'>o2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-477"></a> <span class='hs-conid'>EQ</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>next</span> <span class='hs-varid'>comps</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>np1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>np2</span>
<a name="line-478"></a> <span class='hs-varid'>answer</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>answer</span>
<a name="line-479"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlines</span> <span class='hs-keyglyph'>[</span> <span class='hs-str'>"challenge_Orb is too stupid to handle mismatched orbit data :"</span>
<a name="line-480"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>show</span><span class='hs-layout'>(</span><span class='hs-varid'>tag</span><span class='hs-layout'>,</span><span class='hs-varid'>preTag</span><span class='hs-layout'>,</span><span class='hs-varid'>np1</span><span class='hs-layout'>,</span><span class='hs-varid'>np2</span><span class='hs-layout'>)</span>
<a name="line-481"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>show</span> <span class='hs-varid'>s1</span>
<a name="line-482"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>show</span> <span class='hs-varid'>s2</span>
<a name="line-483"></a> <span class='hs-keyglyph'>]</span>
<a name="line-484"></a> <span class='hs-varid'>challenge_Orb</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>err</span> <span class='hs-str'>"impossible 0298347"</span>
<a name="line-485"></a>
<a name="line-486"></a><a name="comparePos"></a><span class='hs-definition'>comparePos</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>ViewL</span> <span class='hs-conid'>Position</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>ViewL</span> <span class='hs-conid'>Position</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ordering</span>
<a name="line-487"></a><span class='hs-definition'>comparePos</span> <span class='hs-conid'>EmptyL</span> <span class='hs-conid'>EmptyL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>EQ</span>
<a name="line-488"></a><span class='hs-definition'>comparePos</span> <span class='hs-conid'>EmptyL</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GT</span>
<a name="line-489"></a><span class='hs-definition'>comparePos</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>EmptyL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LT</span>
<a name="line-490"></a><span class='hs-definition'>comparePos</span> <span class='hs-layout'>(</span><span class='hs-varid'>p1</span> <span class='hs-conop'>:<</span> <span class='hs-varid'>ps1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>p2</span> <span class='hs-conop'>:<</span> <span class='hs-varid'>ps2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-491"></a> <span class='hs-varid'>compare</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>comparePos</span> <span class='hs-layout'>(</span><span class='hs-varid'>viewl</span> <span class='hs-varid'>ps1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>viewl</span> <span class='hs-varid'>ps2</span><span class='hs-layout'>)</span>
<a name="line-492"></a>
<a name="line-493"></a><span class='hs-comment'>{- CONVERT WINNERS TO MATCHARRAY -}</span>
<a name="line-494"></a>
<a name="line-495"></a><a name="tagsToGroupsST"></a><span class='hs-definition'>tagsToGroupsST</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>s</span><span class='hs-varop'>.</span> <span class='hs-conid'>Array</span> <span class='hs-conid'>GroupIndex</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>GroupInfo</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>WScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>MatchArray</span>
<a name="line-496"></a><span class='hs-definition'>tagsToGroupsST</span> <span class='hs-varid'>aGroups</span> <span class='hs-layout'>(</span><span class='hs-conid'>WScratch</span> <span class='hs-layout'>{</span><span class='hs-varid'>w_pos</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>pos</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-497"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>b_max</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>snd</span> <span class='hs-layout'>(</span><span class='hs-varid'>bounds</span> <span class='hs-layout'>(</span><span class='hs-varid'>aGroups</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-498"></a> <span class='hs-varid'>ma</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newArray</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span><span class='hs-varid'>b_max</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>,</span><span class='hs-num'>0</span><span class='hs-layout'>)</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'>STArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Int</span> <span class='hs-layout'>(</span><span class='hs-conid'>MatchOffset</span><span class='hs-layout'>,</span><span class='hs-conid'>MatchLength</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-499"></a> <span class='hs-varid'>startPos0</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>!!</span> <span class='hs-num'>0</span>
<a name="line-500"></a> <span class='hs-varid'>stopPos0</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>!!</span> <span class='hs-num'>1</span>
<a name="line-501"></a> <span class='hs-varid'>set</span> <span class='hs-varid'>ma</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>startPos0</span><span class='hs-layout'>,</span><span class='hs-varid'>stopPos0</span><span class='hs-comment'>-</span><span class='hs-varid'>startPos0</span><span class='hs-layout'>)</span>
<a name="line-502"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>act</span> <span class='hs-sel'>_this_index</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-503"></a> <span class='hs-varid'>act</span> <span class='hs-varid'>this_index</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>GroupInfo</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>parent</span> <span class='hs-varid'>start</span> <span class='hs-varid'>stop</span> <span class='hs-varid'>flagtag</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>gs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-504"></a> <span class='hs-varid'>flagVal</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>flagtag</span>
<a name="line-505"></a> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-varid'>flagVal</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>act</span> <span class='hs-varid'>this_index</span> <span class='hs-varid'>gs</span>
<a name="line-506"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-507"></a> <span class='hs-varid'>startPos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>start</span>
<a name="line-508"></a> <span class='hs-varid'>stopPos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>stop</span>
<a name="line-509"></a> <span class='hs-layout'>(</span><span class='hs-varid'>startParent</span><span class='hs-layout'>,</span><span class='hs-varid'>lengthParent</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ma</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>parent</span>
<a name="line-510"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ok</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span> <span class='hs-varop'><=</span> <span class='hs-varid'>startParent</span> <span class='hs-varop'>&&</span>
<a name="line-511"></a> <span class='hs-num'>0</span> <span class='hs-varop'><=</span> <span class='hs-varid'>lengthParent</span> <span class='hs-varop'>&&</span>
<a name="line-512"></a> <span class='hs-varid'>startParent</span> <span class='hs-varop'><=</span> <span class='hs-varid'>startPos</span> <span class='hs-varop'>&&</span>
<a name="line-513"></a> <span class='hs-varid'>stopPos</span> <span class='hs-varop'><=</span> <span class='hs-varid'>startPos</span> <span class='hs-varop'>+</span> <span class='hs-varid'>lengthParent</span><span class='hs-layout'>)</span>
<a name="line-514"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>not</span> <span class='hs-varid'>ok</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>act</span> <span class='hs-varid'>this_index</span> <span class='hs-varid'>gs</span>
<a name="line-515"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>set</span> <span class='hs-varid'>ma</span> <span class='hs-varid'>this_index</span> <span class='hs-layout'>(</span><span class='hs-varid'>startPos</span><span class='hs-layout'>,</span><span class='hs-varid'>stopPos</span><span class='hs-comment'>-</span><span class='hs-varid'>startPos</span><span class='hs-layout'>)</span>
<a name="line-516"></a> <span class='hs-varid'>forM_</span> <span class='hs-layout'>(</span><span class='hs-varid'>range</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>,</span><span class='hs-varid'>b_max</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>act</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>aGroups</span><span class='hs-varop'>!</span><span class='hs-varid'>i</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-517"></a> <span class='hs-varid'>unsafeFreeze</span> <span class='hs-varid'>ma</span>
<a name="line-518"></a>
<a name="line-519"></a><span class='hs-comment'>{- MUTABLE TAGGED TRANSITION (returning Tag-0 value) -}</span>
<a name="line-520"></a>
<a name="line-521"></a><a name="spawnAt"></a><span class='hs-comment'>{-# INLINE spawnAt #-}</span>
<a name="line-522"></a><span class='hs-comment'>-- Reset the entry at "Index", or allocate such an entry.</span>
<a name="line-523"></a><span class='hs-comment'>-- set tag 0 to the "Position"</span>
<a name="line-524"></a><span class='hs-definition'>spawnAt</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tag</span><span class='hs-layout'>,</span><span class='hs-conid'>Tag</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BlankScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Index</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MScratch</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-525"></a><span class='hs-definition'>spawnAt</span> <span class='hs-varid'>b_tags</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlankScratch</span> <span class='hs-varid'>blankPos</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-varid'>s1</span> <span class='hs-varid'>thisPos</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-526"></a> <span class='hs-varid'>oldPos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>m_pos</span> <span class='hs-varid'>s1</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>i</span>
<a name="line-527"></a> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>oldPos</span> <span class='hs-keyword'>of</span>
<a name="line-528"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-529"></a> <span class='hs-varid'>pos'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newA_</span> <span class='hs-varid'>b_tags</span>
<a name="line-530"></a> <span class='hs-varid'>set</span> <span class='hs-layout'>(</span><span class='hs-varid'>m_pos</span> <span class='hs-varid'>s1</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>pos'</span><span class='hs-layout'>)</span>
<a name="line-531"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>pos'</span>
<a name="line-532"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>pos</span>
<a name="line-533"></a> <span class='hs-varid'>copySTU</span> <span class='hs-varid'>blankPos</span> <span class='hs-varid'>pos</span>
<a name="line-534"></a> <span class='hs-varid'>set</span> <span class='hs-layout'>(</span><span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s1</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>mempty</span>
<a name="line-535"></a> <span class='hs-varid'>set</span> <span class='hs-varid'>pos</span> <span class='hs-num'>0</span> <span class='hs-varid'>thisPos</span>
<a name="line-536"></a>
<a name="line-537"></a><a name="updateCopy"></a><span class='hs-comment'>{-# INLINE updateCopy #-}</span>
<a name="line-538"></a><span class='hs-definition'>updateCopy</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Index</span><span class='hs-layout'>,</span> <span class='hs-conid'>Instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Tag</span> <span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>OrbitLog</span><span class='hs-layout'>)</span>
<a name="line-539"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Index</span>
<a name="line-540"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MScratch</span> <span class='hs-varid'>s</span>
<a name="line-541"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-542"></a> <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-543"></a><span class='hs-definition'>updateCopy</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-sel'>_i1</span><span class='hs-layout'>,</span><span class='hs-varid'>instructions</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>oldPos</span><span class='hs-layout'>,</span><span class='hs-varid'>newOrbit</span><span class='hs-layout'>)</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>s2</span> <span class='hs-varid'>i2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-544"></a> <span class='hs-varid'>b_tags</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getBounds</span> <span class='hs-varid'>oldPos</span>
<a name="line-545"></a> <span class='hs-varid'>newerPos</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span>
<a name="line-546"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newA_</span> <span class='hs-varid'>b_tags</span>
<a name="line-547"></a> <span class='hs-varid'>set</span> <span class='hs-layout'>(</span><span class='hs-varid'>m_pos</span> <span class='hs-varid'>s2</span><span class='hs-layout'>)</span> <span class='hs-varid'>i2</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-548"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>return</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>m_pos</span> <span class='hs-varid'>s2</span> <span class='hs-varop'>!!</span> <span class='hs-varid'>i2</span>
<a name="line-549"></a> <span class='hs-varid'>copySTU</span> <span class='hs-varid'>oldPos</span> <span class='hs-varid'>newerPos</span>
<a name="line-550"></a> <span class='hs-varid'>doActions</span> <span class='hs-varid'>preTag</span> <span class='hs-varid'>newerPos</span> <span class='hs-layout'>(</span><span class='hs-varid'>newPos</span> <span class='hs-varid'>instructions</span><span class='hs-layout'>)</span>
<a name="line-551"></a> <span class='hs-varid'>set</span> <span class='hs-layout'>(</span><span class='hs-varid'>m_orbit</span> <span class='hs-varid'>s2</span><span class='hs-layout'>)</span> <span class='hs-varid'>i2</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>newOrbit</span>
<a name="line-552"></a>
<a name="line-553"></a><span class='hs-comment'>{- USING memcpy TO COPY STUARRAY DATA -}</span>
<a name="line-554"></a>
<a name="line-555"></a><span class='hs-comment'>-- #ifdef __GLASGOW_HASKELL__</span>
<a name="line-556"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"memcpy"</span>
<a name="line-557"></a> <span class='hs-varid'>memcpy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-conid'>RealWorld</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-conid'>RealWorld</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-558"></a>
<a name="line-559"></a><a name="copySTU"></a><span class='hs-comment'>{-
<a name="line-560"></a>Prelude Data.Array.Base> :i STUArray
<a name="line-561"></a>data STUArray s i e
<a name="line-562"></a> = STUArray !i !i !Int (GHC.Prim.MutableByteArray# s)
<a name="line-563"></a> -- Defined in Data.Array.Base
<a name="line-564"></a>-}</span>
<a name="line-565"></a><span class='hs-comment'>-- This has been updated for ghc 6.8.3 and still works with ghc 6.10.1</span>
<a name="line-566"></a><span class='hs-comment'>{-# INLINE copySTU #-}</span>
<a name="line-567"></a><span class='hs-definition'>copySTU</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>i</span><span class='hs-layout'>,</span><span class='hs-conid'>Ix</span> <span class='hs-varid'>i</span><span class='hs-layout'>,</span><span class='hs-conid'>MArray</span> <span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>e</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>STUArray</span> <span class='hs-varid'>s</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span> <span class='hs-comment'>-- (STUArray s i e)</span>
<a name="line-568"></a><span class='hs-definition'>copySTU</span> <span class='hs-sel'>_souce</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>msource</span><span class='hs-layout'>)</span> <span class='hs-sel'>_destination</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>STUArray</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>mdest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-569"></a><span class='hs-comment'>-- do b1 <- getBounds s1</span>
<a name="line-570"></a><span class='hs-comment'>-- b2 <- getBounds s2</span>
<a name="line-571"></a><span class='hs-comment'>-- when (b1/=b2) (error ("\n\nWTF copySTU: "++show (b1,b2)))</span>
<a name="line-572"></a> <span class='hs-conid'>ST</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span>
<a name="line-573"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>sizeofMutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>msource</span> <span class='hs-keyword'>of</span> <span class='hs-layout'>{</span> <span class='hs-varid'>n</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span>
<a name="line-574"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span> <span class='hs-varid'>memcpy</span> <span class='hs-varid'>mdest</span> <span class='hs-varid'>msource</span> <span class='hs-varid'>n</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s1</span><span class='hs-cpp'>#</span> <span class='hs-keyword'>of</span> <span class='hs-layout'>{</span> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s2</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-conid'>()</span> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-575"></a> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s2</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-conid'>()</span> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span><span class='hs-layout'>}</span>
<a name="line-576"></a><span class='hs-comment'>{-
<a name="line-577"></a>#else /* !__GLASGOW_HASKELL__ */
<a name="line-578"></a>
<a name="line-579"></a>copySTU :: (MArray (STUArray s) e (S.ST s))=> STUArray s Tag e -> STUArray s Tag e -> S.ST s (STUArray s i e)
<a name="line-580"></a>copySTU source destination = do
<a name="line-581"></a> b@(start,stop) <- getBounds source
<a name="line-582"></a> b' <- getBounds destination
<a name="line-583"></a> -- traceCopy ("> copySTArray "++show b) $ do
<a name="line-584"></a> when (b/=b') (fail $ "Text.Regex.TDFA.RunMutState copySTUArray bounds mismatch"++show (b,b'))
<a name="line-585"></a> forM_ (range b) $ \index ->
<a name="line-586"></a> set destination index =<< source !! index
<a name="line-587"></a> return destination
<a name="line-588"></a>#endif /* !__GLASGOW_HASKELL__ */
<a name="line-589"></a>-}</span>
</pre></body>
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