<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ -->
<title>Data/Text/Encoding/Utf8.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP, MagicHash #-}</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.Encoding.Utf8</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) 2008, 2009 Tom Harper,</span>
<a name="line-6"></a><span class='hs-comment'>-- (c) 2009, 2010 Bryan O'Sullivan,</span>
<a name="line-7"></a><span class='hs-comment'>-- (c) 2009 Duncan Coutts</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-10"></a><span class='hs-comment'>-- Maintainer : bos@serpentine.com, rtomharper@googlemail.com,</span>
<a name="line-11"></a><span class='hs-comment'>-- duncan@haskell.org</span>
<a name="line-12"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-13"></a><span class='hs-comment'>-- Portability : GHC</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-- Basic UTF-8 validation and character manipulation.</span>
<a name="line-16"></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'>Encoding</span><span class='hs-varop'>.</span><span class='hs-conid'>Utf8</span>
<a name="line-17"></a> <span class='hs-layout'>(</span>
<a name="line-18"></a> <span class='hs-comment'>-- Decomposition</span>
<a name="line-19"></a> <span class='hs-varid'>ord2</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ord3</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ord4</span>
<a name="line-22"></a> <span class='hs-comment'>-- Construction</span>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>chr2</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>chr3</span>
<a name="line-25"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>chr4</span>
<a name="line-26"></a> <span class='hs-comment'>-- * Validation</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>validate1</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>validate2</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>validate3</span>
<a name="line-30"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>validate4</span>
<a name="line-31"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-32"></a>
<a name="line-33"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span> <span class='hs-layout'>(</span><span class='hs-varid'>assert</span><span class='hs-layout'>)</span>
<a name="line-35"></a><span class='hs-cpp'>#endif</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'>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-37"></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'>UnsafeChar</span> <span class='hs-layout'>(</span><span class='hs-varid'>ord</span><span class='hs-layout'>)</span>
<a name="line-38"></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'>UnsafeShift</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftR</span><span class='hs-layout'>)</span>
<a name="line-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Exts</span>
<a name="line-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</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><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-41"></a>
<a name="line-42"></a><span class='hs-keyword'>default</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="between"></a><span class='hs-definition'>between</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-comment'>-- ^ byte to check</span>
<a name="line-45"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-comment'>-- ^ lower bound</span>
<a name="line-46"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-comment'>-- ^ upper bound</span>
<a name="line-47"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-48"></a><span class='hs-definition'>between</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>y</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>x</span> <span class='hs-varop'><=</span> <span class='hs-varid'>z</span>
<a name="line-49"></a><span class='hs-comment'>{-# INLINE between #-}</span>
<a name="line-50"></a>
<a name="line-51"></a><a name="ord2"></a><span class='hs-definition'>ord2</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-52"></a><span class='hs-definition'>ord2</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span>
<a name="line-53"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-54"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>0x80</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>0x07ff</span><span class='hs-layout'>)</span>
<a name="line-55"></a><span class='hs-cpp'>#endif</span>
<a name="line-56"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-layout'>,</span><span class='hs-varid'>x2</span><span class='hs-layout'>)</span>
<a name="line-57"></a> <span class='hs-keyword'>where</span>
<a name="line-58"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>c</span>
<a name="line-59"></a> <span class='hs-varid'>x1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>6</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0xC0</span>
<a name="line-60"></a> <span class='hs-varid'>x2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3F</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0x80</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="ord3"></a><span class='hs-definition'>ord3</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-63"></a><span class='hs-definition'>ord3</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span>
<a name="line-64"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-65"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>0x0800</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>0xffff</span><span class='hs-layout'>)</span>
<a name="line-66"></a><span class='hs-cpp'>#endif</span>
<a name="line-67"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-layout'>,</span><span class='hs-varid'>x2</span><span class='hs-layout'>,</span><span class='hs-varid'>x3</span><span class='hs-layout'>)</span>
<a name="line-68"></a> <span class='hs-keyword'>where</span>
<a name="line-69"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>c</span>
<a name="line-70"></a> <span class='hs-varid'>x1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0xE0</span>
<a name="line-71"></a> <span class='hs-varid'>x2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>6</span><span class='hs-layout'>)</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3F</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0x80</span>
<a name="line-72"></a> <span class='hs-varid'>x3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3F</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0x80</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="ord4"></a><span class='hs-definition'>ord4</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-75"></a><span class='hs-definition'>ord4</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span>
<a name="line-76"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-77"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>>=</span> <span class='hs-num'>0x10000</span><span class='hs-layout'>)</span>
<a name="line-78"></a><span class='hs-cpp'>#endif</span>
<a name="line-79"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-layout'>,</span><span class='hs-varid'>x2</span><span class='hs-layout'>,</span><span class='hs-varid'>x3</span><span class='hs-layout'>,</span><span class='hs-varid'>x4</span><span class='hs-layout'>)</span>
<a name="line-80"></a> <span class='hs-keyword'>where</span>
<a name="line-81"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>c</span>
<a name="line-82"></a> <span class='hs-varid'>x1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>18</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0xF0</span>
<a name="line-83"></a> <span class='hs-varid'>x2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3F</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0x80</span>
<a name="line-84"></a> <span class='hs-varid'>x3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>6</span><span class='hs-layout'>)</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3F</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0x80</span>
<a name="line-85"></a> <span class='hs-varid'>x4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-varop'>.&.</span> <span class='hs-num'>0x3F</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-num'>0x80</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="chr2"></a><span class='hs-definition'>chr2</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span>
<a name="line-88"></a><span class='hs-definition'>chr2</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x1</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x2</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>chr</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>z1</span><span class='hs-cpp'>#</span> <span class='hs-varop'>+#</span> <span class='hs-varid'>z2</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</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-varop'>!</span><span class='hs-varid'>y1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x1</span><span class='hs-cpp'>#</span>
<a name="line-91"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y2</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x2</span><span class='hs-cpp'>#</span>
<a name="line-92"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncheckedIShiftL</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0xC0</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-num'>6</span><span class='hs-cpp'>#</span>
<a name="line-93"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z2</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>y2</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0x80</span><span class='hs-cpp'>#</span>
<a name="line-94"></a><span class='hs-comment'>{-# INLINE chr2 #-}</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="chr3"></a><span class='hs-definition'>chr3</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span>
<a name="line-97"></a><span class='hs-definition'>chr3</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x1</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x2</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x3</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>chr</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>z1</span><span class='hs-cpp'>#</span> <span class='hs-varop'>+#</span> <span class='hs-varid'>z2</span><span class='hs-cpp'>#</span> <span class='hs-varop'>+#</span> <span class='hs-varid'>z3</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-98"></a> <span class='hs-keyword'>where</span>
<a name="line-99"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x1</span><span class='hs-cpp'>#</span>
<a name="line-100"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y2</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x2</span><span class='hs-cpp'>#</span>
<a name="line-101"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y3</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x3</span><span class='hs-cpp'>#</span>
<a name="line-102"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncheckedIShiftL</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0xE0</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-num'>12</span><span class='hs-cpp'>#</span>
<a name="line-103"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z2</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncheckedIShiftL</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0x80</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-num'>6</span><span class='hs-cpp'>#</span>
<a name="line-104"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z3</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>y3</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0x80</span><span class='hs-cpp'>#</span>
<a name="line-105"></a><span class='hs-comment'>{-# INLINE chr3 #-}</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="chr4"></a><span class='hs-definition'>chr4</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span>
<a name="line-108"></a><span class='hs-definition'>chr4</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x1</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x2</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x3</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W8</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x4</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-109"></a> <span class='hs-conid'>C</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>chr</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>z1</span><span class='hs-cpp'>#</span> <span class='hs-varop'>+#</span> <span class='hs-varid'>z2</span><span class='hs-cpp'>#</span> <span class='hs-varop'>+#</span> <span class='hs-varid'>z3</span><span class='hs-cpp'>#</span> <span class='hs-varop'>+#</span> <span class='hs-varid'>z4</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-110"></a> <span class='hs-keyword'>where</span>
<a name="line-111"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x1</span><span class='hs-cpp'>#</span>
<a name="line-112"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y2</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x2</span><span class='hs-cpp'>#</span>
<a name="line-113"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y3</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x3</span><span class='hs-cpp'>#</span>
<a name="line-114"></a> <span class='hs-varop'>!</span><span class='hs-varid'>y4</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>word2Int</span><span class='hs-cpp'>#</span> <span class='hs-varid'>x4</span><span class='hs-cpp'>#</span>
<a name="line-115"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncheckedIShiftL</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0xF0</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-num'>18</span><span class='hs-cpp'>#</span>
<a name="line-116"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z2</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncheckedIShiftL</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>y2</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0x80</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-num'>12</span><span class='hs-cpp'>#</span>
<a name="line-117"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z3</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncheckedIShiftL</span><span class='hs-cpp'>#</span> <span class='hs-layout'>(</span><span class='hs-varid'>y3</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0x80</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-num'>6</span><span class='hs-cpp'>#</span>
<a name="line-118"></a> <span class='hs-varop'>!</span><span class='hs-varid'>z4</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>y4</span><span class='hs-cpp'>#</span> <span class='hs-varop'>-#</span> <span class='hs-num'>0x80</span><span class='hs-cpp'>#</span>
<a name="line-119"></a><span class='hs-comment'>{-# INLINE chr4 #-}</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="validate1"></a><span class='hs-definition'>validate1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-122"></a><span class='hs-definition'>validate1</span> <span class='hs-varid'>x1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x1</span> <span class='hs-varop'><=</span> <span class='hs-num'>0x7F</span>
<a name="line-123"></a><span class='hs-comment'>{-# INLINE validate1 #-}</span>
<a name="line-124"></a>
<a name="line-125"></a><a name="validate2"></a><span class='hs-definition'>validate2</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-126"></a><span class='hs-definition'>validate2</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>x2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>between</span> <span class='hs-varid'>x1</span> <span class='hs-num'>0xC2</span> <span class='hs-num'>0xDF</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
<a name="line-127"></a><span class='hs-comment'>{-# INLINE validate2 #-}</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="validate3"></a><span class='hs-definition'>validate3</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-130"></a><span class='hs-comment'>{-# INLINE validate3 #-}</span>
<a name="line-131"></a><span class='hs-definition'>validate3</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>validate3_1</span> <span class='hs-varop'>||</span>
<a name="line-132"></a> <span class='hs-varid'>validate3_2</span> <span class='hs-varop'>||</span>
<a name="line-133"></a> <span class='hs-varid'>validate3_3</span> <span class='hs-varop'>||</span>
<a name="line-134"></a> <span class='hs-varid'>validate3_4</span>
<a name="line-135"></a> <span class='hs-keyword'>where</span>
<a name="line-136"></a> <span class='hs-varid'>validate3_1</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span> <span class='hs-varop'>==</span> <span class='hs-num'>0xE0</span><span class='hs-layout'>)</span> <span class='hs-varop'>&&</span>
<a name="line-137"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0xA0</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-138"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x3</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
<a name="line-139"></a> <span class='hs-varid'>validate3_2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>between</span> <span class='hs-varid'>x1</span> <span class='hs-num'>0xE1</span> <span class='hs-num'>0xEC</span> <span class='hs-varop'>&&</span>
<a name="line-140"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-141"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x3</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
<a name="line-142"></a> <span class='hs-varid'>validate3_3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x1</span> <span class='hs-varop'>==</span> <span class='hs-num'>0xED</span> <span class='hs-varop'>&&</span>
<a name="line-143"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0x9F</span> <span class='hs-varop'>&&</span>
<a name="line-144"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x3</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
<a name="line-145"></a> <span class='hs-varid'>validate3_4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>between</span> <span class='hs-varid'>x1</span> <span class='hs-num'>0xEE</span> <span class='hs-num'>0xEF</span> <span class='hs-varop'>&&</span>
<a name="line-146"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-147"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x3</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="validate4"></a><span class='hs-definition'>validate4</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-150"></a><span class='hs-comment'>{-# INLINE validate4 #-}</span>
<a name="line-151"></a><span class='hs-definition'>validate4</span> <span class='hs-varid'>x1</span> <span class='hs-varid'>x2</span> <span class='hs-varid'>x3</span> <span class='hs-varid'>x4</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>validate4_1</span> <span class='hs-varop'>||</span>
<a name="line-152"></a> <span class='hs-varid'>validate4_2</span> <span class='hs-varop'>||</span>
<a name="line-153"></a> <span class='hs-varid'>validate4_3</span>
<a name="line-154"></a> <span class='hs-keyword'>where</span>
<a name="line-155"></a> <span class='hs-varid'>validate4_1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x1</span> <span class='hs-varop'>==</span> <span class='hs-num'>0xF0</span> <span class='hs-varop'>&&</span>
<a name="line-156"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0x90</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-157"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x3</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-158"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x4</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
<a name="line-159"></a> <span class='hs-varid'>validate4_2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>between</span> <span class='hs-varid'>x1</span> <span class='hs-num'>0xF1</span> <span class='hs-num'>0xF3</span> <span class='hs-varop'>&&</span>
<a name="line-160"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-161"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x3</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-162"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x4</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
<a name="line-163"></a> <span class='hs-varid'>validate4_3</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x1</span> <span class='hs-varop'>==</span> <span class='hs-num'>0xF4</span> <span class='hs-varop'>&&</span>
<a name="line-164"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x2</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0x8F</span> <span class='hs-varop'>&&</span>
<a name="line-165"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x3</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span> <span class='hs-varop'>&&</span>
<a name="line-166"></a> <span class='hs-varid'>between</span> <span class='hs-varid'>x4</span> <span class='hs-num'>0x80</span> <span class='hs-num'>0xBF</span>
</pre></body>
</html>
