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<title>Data/Text/Internal/Private.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE BangPatterns, Rank2Types, UnboxedTuples #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : Data.Text.Internal.Private</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) 2011 Bryan O'Sullivan</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : bos@serpentine.com</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : GHC</span>
<a name="line-11"></a>
<a name="line-12"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Private</span>
<a name="line-13"></a> <span class='hs-layout'>(</span>
<a name="line-14"></a> <span class='hs-varid'>runText</span>
<a name="line-15"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>span_</span>
<a name="line-16"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-layout'>(</span><span class='hs-conid'>ST</span><span class='hs-layout'>,</span> <span class='hs-varid'>runST</span><span class='hs-layout'>)</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</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'>text</span><span class='hs-layout'>)</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Iter</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'>iter</span><span class='hs-layout'>)</span>
<a name="line-21"></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'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>A</span>
<a name="line-22"></a>
<a name="line-23"></a><a name="span_"></a><span class='hs-definition'>span_</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Text</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-conid'>Text</span><span class='hs-layout'>,</span> <span class='hs-conid'>Text</span> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-definition'>span_</span> <span class='hs-varid'>p</span> <span class='hs-varid'>t</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Text</span> <span class='hs-varid'>arr</span> <span class='hs-varid'>off</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-varid'>hd</span><span class='hs-layout'>,</span><span class='hs-varid'>tl</span> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-25"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>hd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span> <span class='hs-varid'>arr</span> <span class='hs-varid'>off</span> <span class='hs-varid'>k</span>
<a name="line-26"></a> <span class='hs-varid'>tl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span> <span class='hs-varid'>arr</span> <span class='hs-layout'>(</span><span class='hs-varid'>off</span><span class='hs-varop'>+</span><span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>len</span><span class='hs-comment'>-</span><span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-27"></a> <span class='hs-varop'>!</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>loop</span> <span class='hs-num'>0</span>
<a name="line-28"></a> <span class='hs-varid'>loop</span> <span class='hs-varop'>!</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>i</span> <span class='hs-varop'><</span> <span class='hs-varid'>len</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>p</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>loop</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-varop'>+</span><span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-29"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span>
<a name="line-30"></a> <span class='hs-keyword'>where</span> <span class='hs-conid'>Iter</span> <span class='hs-varid'>c</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iter</span> <span class='hs-varid'>t</span> <span class='hs-varid'>i</span>
<a name="line-31"></a><span class='hs-comment'>{-# INLINE span_ #-}</span>
<a name="line-32"></a>
<a name="line-33"></a><a name="runText"></a><span class='hs-definition'>runText</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyword'>forall</span> <span class='hs-varid'>s</span><span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Text</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-conid'>Text</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Text</span>
<a name="line-34"></a><span class='hs-definition'>runText</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runST</span> <span class='hs-layout'>(</span><span class='hs-varid'>act</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varop'>!</span><span class='hs-varid'>marr</span> <span class='hs-varop'>!</span><span class='hs-varid'>len</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-35"></a> <span class='hs-varid'>arr</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeFreeze</span> <span class='hs-varid'>marr</span>
<a name="line-36"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>text</span> <span class='hs-varid'>arr</span> <span class='hs-num'>0</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span>
<a name="line-37"></a><span class='hs-comment'>{-# INLINE runText #-}</span>
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