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<title>Text/Regex/TDFA/NewDFA/Engine_NC_FA.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- | This is the non-capturing form of Text.Regex.TDFA.NewDFA.String</span>
<a name="line-2"></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_NC_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-3"></a>
<a name="line-4"></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'>unless</span><span class='hs-layout'>)</span>
<a name="line-5"></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-6"></a>
<a name="line-7"></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-varid'>newArray</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-8"></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'>ST</span><span class='hs-layout'>(</span><span class='hs-conid'>STArray</span><span class='hs-layout'>)</span>
<a name="line-9"></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-10"></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>
<a name="line-11"></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'>null</span><span class='hs-layout'>)</span>
<a name="line-12"></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'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>MArray</span><span class='hs-conid'>()</span>
<a name="line-13"></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-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-14"></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-15"></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>
<a name="line-16"></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-17"></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-18"></a>
<a name="line-19"></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-20"></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-21"></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-22"></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>
<a name="line-23"></a>
<a name="line-24"></a><span class='hs-comment'>--import Debug.Trace</span>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-comment'>-- trace :: String -> a -> a</span>
<a name="line-27"></a><span class='hs-comment'>-- trace _ a = a</span>
<a name="line-28"></a>
<a name="line-29"></a><a name="execMatch"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> ([] Char) -> [MatchArray] #-}</span>
<a name="line-30"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> (Seq Char) -> [MatchArray] #-}</span>
<a name="line-31"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> SBS.ByteString -> [MatchArray] #-}</span>
<a name="line-32"></a><span class='hs-comment'>{-# SPECIALIZE execMatch :: Regex -> Position -> Char -> LBS.ByteString -> [MatchArray] #-}</span>
<a name="line-33"></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-34"></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_dt</span><span class='hs-keyglyph'>=</span><span class='hs-varid'>dtIn</span><span class='hs-layout'>}</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-35"></a> <span class='hs-varid'>offsetIn</span> <span class='hs-sel'>_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-36"></a>
<a name="line-37"></a> <span class='hs-varid'>test</span> <span class='hs-varid'>wt</span> <span class='hs-varid'>off</span> <span class='hs-varid'>input</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>test_singleline</span> <span class='hs-varid'>wt</span> <span class='hs-varid'>off</span> <span class='hs-chr'>'\n'</span> <span class='hs-varid'>input</span>
<a name="line-38"></a>
<a name="line-39"></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-40"></a> <span class='hs-varid'>winQ</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newSTRef</span> <span class='hs-conid'>Nothing</span>
<a name="line-41"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>next</span> <span class='hs-varid'>dt</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>input</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>{-# SCC "goNext.next" #-}</span>
<a name="line-42"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>dt</span> <span class='hs-keyword'>of</span>
<a name="line-43"></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-44"></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'>input</span>
<a name="line-45"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>next</span> <span class='hs-varid'>a</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>input</span>
<a name="line-46"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>next</span> <span class='hs-varid'>b</span> <span class='hs-varid'>offset</span> <span class='hs-varid'>input</span>
<a name="line-47"></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-48"></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-49"></a> <span class='hs-varid'>writeSTRef</span> <span class='hs-varid'>winQ</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>offset</span><span class='hs-layout'>)</span>
<a name="line-50"></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-51"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>finalizeWinner</span>
<a name="line-52"></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> <span class='hs-keyword'>do</span>
<a name="line-53"></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-54"></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>
<a name="line-55"></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-56"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span>
<a name="line-57"></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>
<a name="line-58"></a> <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'>dt'</span> <span class='hs-varid'>offset'</span> <span class='hs-varid'>input'</span>
<a name="line-59"></a>
<a name="line-60"></a> <span class='hs-varid'>finalizeWinner</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-61"></a> <span class='hs-varid'>mWinner</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readSTRef</span> <span class='hs-varid'>winQ</span>
<a name="line-62"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mWinner</span> <span class='hs-keyword'>of</span>
<a name="line-63"></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-64"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>winner</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>makeGroup</span> <span class='hs-varid'>offsetIn</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-65"></a>
<a name="line-66"></a> <span class='hs-varid'>next</span> <span class='hs-varid'>dtIn</span> <span class='hs-varid'>offsetIn</span> <span class='hs-varid'>inputIn</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-comment'>----</span>
<a name="line-69"></a>
<a name="line-70"></a><span class='hs-comment'>{- CONVERT WINNERS TO MATCHARRAY -}</span>
<a name="line-71"></a>
<a name="line-72"></a><a name="makeGroup"></a><span class='hs-definition'>makeGroup</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Position</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'>MatchArray</span>
<a name="line-73"></a><span class='hs-definition'>makeGroup</span> <span class='hs-varid'>start</span> <span class='hs-varid'>stop</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-74"></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-num'>0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>start</span><span class='hs-layout'>,</span><span class='hs-varid'>stop</span><span class='hs-comment'>-</span><span class='hs-varid'>start</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'>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-75"></a> <span class='hs-varid'>unsafeFreeze</span> <span class='hs-varid'>ma</span>
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