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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE BangPatterns #-}</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.Encoding.Fusion.Common</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Tom Harper 2008-2009,</span>
<a name="line-6"></a><span class='hs-comment'>-- (c) Bryan O'Sullivan 2009,</span>
<a name="line-7"></a><span class='hs-comment'>-- (c) Duncan Coutts 2009,</span>
<a name="line-8"></a><span class='hs-comment'>-- (c) Jasper Van der Jeugt 2011</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-11"></a><span class='hs-comment'>-- Maintainer : bos@serpentine.com</span>
<a name="line-12"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-13"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-- /Warning/: this is an internal module, and does not have a stable</span>
<a name="line-16"></a><span class='hs-comment'>-- API or name. Use at your own risk!</span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>-- Fusible 'Stream'-oriented functions for converting between 'Text'</span>
<a name="line-19"></a><span class='hs-comment'>-- and several common encodings.</span>
<a name="line-20"></a>
<a name="line-21"></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'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>Fusion</span><span class='hs-varop'>.</span><span class='hs-conid'>Common</span>
<a name="line-22"></a> <span class='hs-layout'>(</span>
<a name="line-23"></a> <span class='hs-comment'>-- * Restreaming</span>
<a name="line-24"></a> <span class='hs-comment'>-- Restreaming is the act of converting from one 'Stream'</span>
<a name="line-25"></a> <span class='hs-comment'>-- representation to another.</span>
<a name="line-26"></a> <span class='hs-varid'>restreamUtf16LE</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>restreamUtf16BE</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>restreamUtf32LE</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>restreamUtf32BE</span>
<a name="line-30"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-31"></a>
<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'>Bits</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>.&.</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>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'>Fusion</span> <span class='hs-layout'>(</span><span class='hs-conid'>Step</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Stream</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-34"></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-varop'>.</span><span class='hs-conid'>Fusion</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</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'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <span class='hs-layout'>(</span><span class='hs-varid'>ord</span><span class='hs-layout'>)</span>
<a name="line-36"></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-varop'>.</span><span class='hs-conid'>Unsafe</span><span class='hs-varop'>.</span><span class='hs-conid'>Shift</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftR</span><span class='hs-layout'>)</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-38"></a>
<a name="line-39"></a><a name="restreamUtf16BE"></a><span class='hs-definition'>restreamUtf16BE</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Word8</span>
<a name="line-40"></a><span class='hs-definition'>restreamUtf16BE</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s0</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>len</span> <span class='hs-varop'>*</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-41"></a> <span class='hs-keyword'>where</span>
<a name="line-42"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-43"></a> <span class='hs-conid'>Done</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Done</span>
<a name="line-44"></a> <span class='hs-conid'>Skip</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Skip</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s'</span><span class='hs-layout'>)</span>
<a name="line-45"></a> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x</span> <span class='hs-varid'>s'</span>
<a name="line-46"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'><</span> <span class='hs-num'>0x10000</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Yield</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>n</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-47"></a> <span class='hs-conid'>RS1</span> <span class='hs-varid'>s'</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span>
<a name="line-48"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>c1</span> <span class='hs-varop'>$</span> <span class='hs-conid'>RS3</span> <span class='hs-varid'>s'</span> <span class='hs-varid'>c2</span> <span class='hs-varid'>c3</span> <span class='hs-varid'>c4</span>
<a name="line-49"></a> <span class='hs-keyword'>where</span>
<a name="line-50"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>x</span>
<a name="line-51"></a> <span class='hs-varid'>n1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n</span> <span class='hs-comment'>-</span> <span class='hs-num'>0x10000</span>
<a name="line-52"></a> <span class='hs-varid'>c1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>n1</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>18</span> <span class='hs-varop'>+</span> <span class='hs-num'>0xD8</span><span class='hs-layout'>)</span>
<a name="line-53"></a> <span class='hs-varid'>c2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>n1</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>10</span><span class='hs-layout'>)</span>
<a name="line-54"></a> <span class='hs-varid'>n2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n1</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3FF</span>
<a name="line-55"></a> <span class='hs-varid'>c3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>n2</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>8</span> <span class='hs-varop'>+</span> <span class='hs-num'>0xDC</span><span class='hs-layout'>)</span>
<a name="line-56"></a> <span class='hs-varid'>c4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n2</span>
<a name="line-57"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-58"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span>
<a name="line-59"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS3</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span>
<a name="line-60"></a> <span class='hs-comment'>{-# INLINE next #-}</span>
<a name="line-61"></a><span class='hs-comment'>{-# INLINE restreamUtf16BE #-}</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="restreamUtf16LE"></a><span class='hs-definition'>restreamUtf16LE</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Word8</span>
<a name="line-64"></a><span class='hs-definition'>restreamUtf16LE</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s0</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>len</span> <span class='hs-varop'>*</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-65"></a> <span class='hs-keyword'>where</span>
<a name="line-66"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-67"></a> <span class='hs-conid'>Done</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Done</span>
<a name="line-68"></a> <span class='hs-conid'>Skip</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Skip</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s'</span><span class='hs-layout'>)</span>
<a name="line-69"></a> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x</span> <span class='hs-varid'>s'</span>
<a name="line-70"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'><</span> <span class='hs-num'>0x10000</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Yield</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-71"></a> <span class='hs-conid'>RS1</span> <span class='hs-varid'>s'</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>shiftR</span> <span class='hs-varid'>n</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span>
<a name="line-72"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>c1</span> <span class='hs-varop'>$</span> <span class='hs-conid'>RS3</span> <span class='hs-varid'>s'</span> <span class='hs-varid'>c2</span> <span class='hs-varid'>c3</span> <span class='hs-varid'>c4</span>
<a name="line-73"></a> <span class='hs-keyword'>where</span>
<a name="line-74"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>x</span>
<a name="line-75"></a> <span class='hs-varid'>n1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n</span> <span class='hs-comment'>-</span> <span class='hs-num'>0x10000</span>
<a name="line-76"></a> <span class='hs-varid'>c2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftR</span> <span class='hs-varid'>n1</span> <span class='hs-num'>18</span> <span class='hs-varop'>+</span> <span class='hs-num'>0xD8</span><span class='hs-layout'>)</span>
<a name="line-77"></a> <span class='hs-varid'>c1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftR</span> <span class='hs-varid'>n1</span> <span class='hs-num'>10</span><span class='hs-layout'>)</span>
<a name="line-78"></a> <span class='hs-varid'>n2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n1</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3FF</span>
<a name="line-79"></a> <span class='hs-varid'>c4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftR</span> <span class='hs-varid'>n2</span> <span class='hs-num'>8</span> <span class='hs-varop'>+</span> <span class='hs-num'>0xDC</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-varid'>c3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n2</span>
<a name="line-81"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-82"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span>
<a name="line-83"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS3</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span>
<a name="line-84"></a> <span class='hs-comment'>{-# INLINE next #-}</span>
<a name="line-85"></a><span class='hs-comment'>{-# INLINE restreamUtf16LE #-}</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="restreamUtf32BE"></a><span class='hs-definition'>restreamUtf32BE</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Word8</span>
<a name="line-88"></a><span class='hs-definition'>restreamUtf32BE</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s0</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>len</span> <span class='hs-varop'>*</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-89"></a> <span class='hs-keyword'>where</span>
<a name="line-90"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-91"></a> <span class='hs-conid'>Done</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Done</span>
<a name="line-92"></a> <span class='hs-conid'>Skip</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Skip</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s'</span><span class='hs-layout'>)</span>
<a name="line-93"></a> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>c1</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS3</span> <span class='hs-varid'>s'</span> <span class='hs-varid'>c2</span> <span class='hs-varid'>c3</span> <span class='hs-varid'>c4</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-keyword'>where</span>
<a name="line-95"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>x</span>
<a name="line-96"></a> <span class='hs-varid'>c1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>shiftR</span> <span class='hs-varid'>n</span> <span class='hs-num'>24</span>
<a name="line-97"></a> <span class='hs-varid'>c2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>shiftR</span> <span class='hs-varid'>n</span> <span class='hs-num'>16</span>
<a name="line-98"></a> <span class='hs-varid'>c3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>shiftR</span> <span class='hs-varid'>n</span> <span class='hs-num'>8</span>
<a name="line-99"></a> <span class='hs-varid'>c4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span>
<a name="line-100"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-101"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span>
<a name="line-102"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS3</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span>
<a name="line-103"></a> <span class='hs-comment'>{-# INLINE next #-}</span>
<a name="line-104"></a><span class='hs-comment'>{-# INLINE restreamUtf32BE #-}</span>
<a name="line-105"></a>
<a name="line-106"></a><a name="restreamUtf32LE"></a><span class='hs-definition'>restreamUtf32LE</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Stream</span> <span class='hs-conid'>Word8</span>
<a name="line-107"></a><span class='hs-definition'>restreamUtf32LE</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s0</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s0</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>len</span> <span class='hs-varop'>*</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-108"></a> <span class='hs-keyword'>where</span>
<a name="line-109"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>next0</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-110"></a> <span class='hs-conid'>Done</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Done</span>
<a name="line-111"></a> <span class='hs-conid'>Skip</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Skip</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s'</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>c1</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS3</span> <span class='hs-varid'>s'</span> <span class='hs-varid'>c2</span> <span class='hs-varid'>c3</span> <span class='hs-varid'>c4</span><span class='hs-layout'>)</span>
<a name="line-113"></a> <span class='hs-keyword'>where</span>
<a name="line-114"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>x</span>
<a name="line-115"></a> <span class='hs-varid'>c4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>shiftR</span> <span class='hs-varid'>n</span> <span class='hs-num'>24</span>
<a name="line-116"></a> <span class='hs-varid'>c3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>shiftR</span> <span class='hs-varid'>n</span> <span class='hs-num'>16</span>
<a name="line-117"></a> <span class='hs-varid'>c2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>shiftR</span> <span class='hs-varid'>n</span> <span class='hs-num'>8</span>
<a name="line-118"></a> <span class='hs-varid'>c1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span>
<a name="line-119"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS0</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-120"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS1</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span><span class='hs-layout'>)</span>
<a name="line-121"></a> <span class='hs-varid'>next</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS3</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Yield</span> <span class='hs-varid'>x2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RS2</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span><span class='hs-layout'>)</span>
<a name="line-122"></a> <span class='hs-comment'>{-# INLINE next #-}</span>
<a name="line-123"></a><span class='hs-comment'>{-# INLINE restreamUtf32LE #-}</span>
</pre></body>
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