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<?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://code.haskell.org/~malcolm/hscolour/ -->
<title>vendor/attoparsec-0.12.1.1/Data/Attoparsec/ByteString/Internal.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE BangPatterns, GADTs, OverloadedStrings, RecordWildCards #-}</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module      :  Data.Attoparsec.ByteString.Internal</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright   :  Bryan O'Sullivan 2007-2014</span>
<a name="line-5"></a><span class='hs-comment'>-- License     :  BSD3</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer  :  bos@serpentine.com</span>
<a name="line-8"></a><span class='hs-comment'>-- Stability   :  experimental</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability :  unknown</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Simple, efficient parser combinators for 'ByteString' strings,</span>
<a name="line-12"></a><span class='hs-comment'>-- loosely based on the Parsec library.</span>
<a name="line-13"></a>
<a name="line-14"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-15"></a>    <span class='hs-layout'>(</span>
<a name="line-16"></a>    <span class='hs-comment'>-- * Parser types</span>
<a name="line-17"></a>      <span class='hs-conid'>Parser</span>
<a name="line-18"></a>    <span class='hs-layout'>,</span> <span class='hs-conid'>Result</span>
<a name="line-19"></a>
<a name="line-20"></a>    <span class='hs-comment'>-- * Running parsers</span>
<a name="line-21"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>parse</span>
<a name="line-22"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>parseOnly</span>
<a name="line-23"></a>
<a name="line-24"></a>    <span class='hs-comment'>-- * Combinators</span>
<a name="line-25"></a>    <span class='hs-layout'>,</span> <span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Combinator</span>
<a name="line-26"></a>
<a name="line-27"></a>    <span class='hs-comment'>-- * Parsing individual bytes</span>
<a name="line-28"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>satisfy</span>
<a name="line-29"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>satisfyWith</span>
<a name="line-30"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>anyWord8</span>
<a name="line-31"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>skip</span>
<a name="line-32"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>word8</span>
<a name="line-33"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>notWord8</span>
<a name="line-34"></a>
<a name="line-35"></a>    <span class='hs-comment'>-- ** Lookahead</span>
<a name="line-36"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>peekWord8</span>
<a name="line-37"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>peekWord8'</span>
<a name="line-38"></a>
<a name="line-39"></a>    <span class='hs-comment'>-- ** Byte classes</span>
<a name="line-40"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>inClass</span>
<a name="line-41"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>notInClass</span>
<a name="line-42"></a>
<a name="line-43"></a>    <span class='hs-comment'>-- * Parsing more complicated structures</span>
<a name="line-44"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>storable</span>
<a name="line-45"></a>
<a name="line-46"></a>    <span class='hs-comment'>-- * Efficient string handling</span>
<a name="line-47"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>skipWhile</span>
<a name="line-48"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>string</span>
<a name="line-49"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>stringTransform</span>
<a name="line-50"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>take</span>
<a name="line-51"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>scan</span>
<a name="line-52"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>runScanner</span>
<a name="line-53"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>takeWhile</span>
<a name="line-54"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>takeWhile1</span>
<a name="line-55"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>takeTill</span>
<a name="line-56"></a>
<a name="line-57"></a>    <span class='hs-comment'>-- ** Consume all remaining input</span>
<a name="line-58"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>takeByteString</span>
<a name="line-59"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>takeLazyByteString</span>
<a name="line-60"></a>
<a name="line-61"></a>    <span class='hs-comment'>-- * Utilities</span>
<a name="line-62"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>endOfLine</span>
<a name="line-63"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>endOfInput</span>
<a name="line-64"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>match</span>
<a name="line-65"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>atEnd</span>
<a name="line-66"></a>    <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>&lt;|&gt;</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>&lt;$&gt;</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-69"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>when</span><span class='hs-layout'>)</span>
<a name="line-70"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Buffer</span> <span class='hs-layout'>(</span><span class='hs-conid'>Buffer</span><span class='hs-layout'>,</span> <span class='hs-varid'>buffer</span><span class='hs-layout'>)</span>
<a name="line-71"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>FastSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>charClass</span><span class='hs-layout'>,</span> <span class='hs-varid'>memberWord8</span><span class='hs-layout'>)</span>
<a name="line-72"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Combinator</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>&lt;?&gt;</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-73"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-74"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Fhthagn</span> <span class='hs-layout'>(</span><span class='hs-varid'>inlinePerformIO</span><span class='hs-layout'>)</span>
<a name="line-75"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-conid'>Parser</span><span class='hs-layout'>,</span> <span class='hs-conid'>Failure</span><span class='hs-layout'>,</span> <span class='hs-conid'>Success</span><span class='hs-layout'>)</span>
<a name="line-76"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span>
<a name="line-77"></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-78"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-varid'>withForeignPtr</span><span class='hs-layout'>)</span>
<a name="line-79"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>minusPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>plusPtr</span><span class='hs-layout'>)</span>
<a name="line-80"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-layout'>(</span><span class='hs-varid'>peek</span><span class='hs-layout'>,</span> <span class='hs-varid'>sizeOf</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-81"></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-varid'>getChar</span><span class='hs-layout'>,</span> <span class='hs-varid'>succ</span><span class='hs-layout'>,</span> <span class='hs-varid'>take</span><span class='hs-layout'>,</span> <span class='hs-varid'>takeWhile</span><span class='hs-layout'>)</span>
<a name="line-82"></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'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Buffer</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Buf</span>
<a name="line-83"></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'>Attoparsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>T</span>
<a name="line-84"></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-keyword'>as</span> <span class='hs-conid'>B8</span>
<a name="line-85"></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'>B</span>
<a name="line-86"></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'>Internal</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span>
<a name="line-87"></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-keyword'>as</span> <span class='hs-conid'>L</span>
<a name="line-88"></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'>Unsafe</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span>
<a name="line-89"></a>
<a name="line-90"></a><a name="Parser"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Parser</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-91"></a><a name="Result"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Result</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IResult</span> <span class='hs-conid'>ByteString</span>
<a name="line-92"></a><a name="Failure"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Failure</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Failure</span> <span class='hs-conid'>ByteString</span> <span class='hs-conid'>Buffer</span> <span class='hs-varid'>r</span>
<a name="line-93"></a><a name="Success"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Success</span> <span class='hs-varid'>a</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Success</span> <span class='hs-conid'>ByteString</span> <span class='hs-conid'>Buffer</span> <span class='hs-varid'>a</span> <span class='hs-varid'>r</span>
<a name="line-94"></a>
<a name="line-95"></a><a name="satisfy"></a><span class='hs-comment'>-- | The parser @satisfy p@ succeeds for any byte for which the</span>
<a name="line-96"></a><span class='hs-comment'>-- predicate @p@ returns 'True'. Returns the byte that is actually</span>
<a name="line-97"></a><span class='hs-comment'>-- parsed.</span>
<a name="line-98"></a><span class='hs-comment'>--</span>
<a name="line-99"></a><span class='hs-comment'>-- &gt;digit = satisfy isDigit</span>
<a name="line-100"></a><span class='hs-comment'>-- &gt;    where isDigit w = w &gt;= 48 &amp;&amp; w &lt;= 57</span>
<a name="line-101"></a><span class='hs-definition'>satisfy</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Word8</span>
<a name="line-102"></a><span class='hs-definition'>satisfy</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-103"></a>  <span class='hs-varid'>h</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>peekWord8'</span>
<a name="line-104"></a>  <span class='hs-keyword'>if</span> <span class='hs-varid'>p</span> <span class='hs-varid'>h</span>
<a name="line-105"></a>    <span class='hs-keyword'>then</span> <span class='hs-varid'>advance</span> <span class='hs-num'>1</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>h</span>
<a name="line-106"></a>    <span class='hs-keyword'>else</span> <span class='hs-varid'>fail</span> <span class='hs-str'>"satisfy"</span>
<a name="line-107"></a><span class='hs-comment'>{-# INLINE satisfy #-}</span>
<a name="line-108"></a>
<a name="line-109"></a><a name="skip"></a><span class='hs-comment'>-- | The parser @skip p@ succeeds for any byte for which the predicate</span>
<a name="line-110"></a><span class='hs-comment'>-- @p@ returns 'True'.</span>
<a name="line-111"></a><span class='hs-comment'>--</span>
<a name="line-112"></a><span class='hs-comment'>-- &gt;skipDigit = skip isDigit</span>
<a name="line-113"></a><span class='hs-comment'>-- &gt;    where isDigit w = w &gt;= 48 &amp;&amp; w &lt;= 57</span>
<a name="line-114"></a><span class='hs-definition'>skip</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>()</span>
<a name="line-115"></a><span class='hs-definition'>skip</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-116"></a>  <span class='hs-varid'>h</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>peekWord8'</span>
<a name="line-117"></a>  <span class='hs-keyword'>if</span> <span class='hs-varid'>p</span> <span class='hs-varid'>h</span>
<a name="line-118"></a>    <span class='hs-keyword'>then</span> <span class='hs-varid'>advance</span> <span class='hs-num'>1</span>
<a name="line-119"></a>    <span class='hs-keyword'>else</span> <span class='hs-varid'>fail</span> <span class='hs-str'>"skip"</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="satisfyWith"></a><span class='hs-comment'>-- | The parser @satisfyWith f p@ transforms a byte, and succeeds if</span>
<a name="line-122"></a><span class='hs-comment'>-- the predicate @p@ returns 'True' on the transformed value. The</span>
<a name="line-123"></a><span class='hs-comment'>-- parser returns the transformed byte that was parsed.</span>
<a name="line-124"></a><span class='hs-definition'>satisfyWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-125"></a><span class='hs-definition'>satisfyWith</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-126"></a>  <span class='hs-varid'>h</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>peekWord8'</span>
<a name="line-127"></a>  <span class='hs-keyword'>let</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>h</span>
<a name="line-128"></a>  <span class='hs-keyword'>if</span> <span class='hs-varid'>p</span> <span class='hs-varid'>c</span>
<a name="line-129"></a>    <span class='hs-keyword'>then</span> <span class='hs-varid'>advance</span> <span class='hs-num'>1</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>c</span>
<a name="line-130"></a>    <span class='hs-keyword'>else</span> <span class='hs-varid'>fail</span> <span class='hs-str'>"satisfyWith"</span>
<a name="line-131"></a><span class='hs-comment'>{-# INLINE satisfyWith #-}</span>
<a name="line-132"></a>
<a name="line-133"></a><a name="storable"></a><span class='hs-definition'>storable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-134"></a><span class='hs-definition'>storable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hack</span> <span class='hs-varid'>undefined</span>
<a name="line-135"></a> <span class='hs-keyword'>where</span>
<a name="line-136"></a>  <span class='hs-varid'>hack</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>b</span>
<a name="line-137"></a>  <span class='hs-varid'>hack</span> <span class='hs-varid'>dummy</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-138"></a>    <span class='hs-layout'>(</span><span class='hs-varid'>fp</span><span class='hs-layout'>,</span><span class='hs-varid'>o</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>toForeignPtr</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>take</span> <span class='hs-layout'>(</span><span class='hs-varid'>sizeOf</span> <span class='hs-varid'>dummy</span><span class='hs-layout'>)</span>
<a name="line-139"></a>    <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>inlinePerformIO</span> <span class='hs-varop'>.</span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>fp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-140"></a>        <span class='hs-varid'>peek</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="takeWith"></a><span class='hs-comment'>-- | Consume @n@ bytes of input, but succeed only if the predicate</span>
<a name="line-143"></a><span class='hs-comment'>-- returns 'True'.</span>
<a name="line-144"></a><span class='hs-definition'>takeWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-145"></a><span class='hs-definition'>takeWith</span> <span class='hs-varid'>n0</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-146"></a>  <span class='hs-keyword'>let</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>max</span> <span class='hs-varid'>n0</span> <span class='hs-num'>0</span>
<a name="line-147"></a>  <span class='hs-varid'>s</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>ensure</span> <span class='hs-varid'>n</span>
<a name="line-148"></a>  <span class='hs-keyword'>if</span> <span class='hs-varid'>p</span> <span class='hs-varid'>s</span>
<a name="line-149"></a>    <span class='hs-keyword'>then</span> <span class='hs-varid'>advance</span> <span class='hs-varid'>n</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span>
<a name="line-150"></a>    <span class='hs-keyword'>else</span> <span class='hs-varid'>fail</span> <span class='hs-str'>"takeWith"</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="take"></a><span class='hs-comment'>-- | Consume exactly @n@ bytes of input.</span>
<a name="line-153"></a><span class='hs-definition'>take</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-154"></a><span class='hs-definition'>take</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>takeWith</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span>
<a name="line-155"></a><span class='hs-comment'>{-# INLINE take #-}</span>
<a name="line-156"></a>
<a name="line-157"></a><a name="string"></a><span class='hs-comment'>-- | @string s@ parses a sequence of bytes that identically match</span>
<a name="line-158"></a><span class='hs-comment'>-- @s@. Returns the parsed string (i.e. @s@).  This parser consumes no</span>
<a name="line-159"></a><span class='hs-comment'>-- input if it fails (even if a partial match).</span>
<a name="line-160"></a><span class='hs-comment'>--</span>
<a name="line-161"></a><span class='hs-comment'>-- /Note/: The behaviour of this parser is different to that of the</span>
<a name="line-162"></a><span class='hs-comment'>-- similarly-named parser in Parsec, as this one is all-or-nothing.</span>
<a name="line-163"></a><span class='hs-comment'>-- To illustrate the difference, the following parser will fail under</span>
<a name="line-164"></a><span class='hs-comment'>-- Parsec given an input of @\"for\"@:</span>
<a name="line-165"></a><span class='hs-comment'>--</span>
<a name="line-166"></a><span class='hs-comment'>-- &gt;string "foo" &lt;|&gt; string "for"</span>
<a name="line-167"></a><span class='hs-comment'>--</span>
<a name="line-168"></a><span class='hs-comment'>-- The reason for its failure is that the first branch is a</span>
<a name="line-169"></a><span class='hs-comment'>-- partial match, and will consume the letters @\'f\'@ and @\'o\'@</span>
<a name="line-170"></a><span class='hs-comment'>-- before failing.  In attoparsec, the above parser will /succeed/ on</span>
<a name="line-171"></a><span class='hs-comment'>-- that input, because the failed first branch will consume nothing.</span>
<a name="line-172"></a><span class='hs-definition'>string</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-173"></a><span class='hs-definition'>string</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>takeWith</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-174"></a><span class='hs-comment'>{-# INLINE string #-}</span>
<a name="line-175"></a>
<a name="line-176"></a><a name="stringTransform"></a><span class='hs-definition'>stringTransform</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>ByteString</span>
<a name="line-177"></a>                <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-178"></a><span class='hs-definition'>stringTransform</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>takeWith</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-varid'>f</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-179"></a><span class='hs-comment'>{-# INLINE stringTransform #-}</span>
<a name="line-180"></a>
<a name="line-181"></a><a name="skipWhile"></a><span class='hs-comment'>-- | Skip past input for as long as the predicate returns 'True'.</span>
<a name="line-182"></a><span class='hs-definition'>skipWhile</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>()</span>
<a name="line-183"></a><span class='hs-definition'>skipWhile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span>
<a name="line-184"></a> <span class='hs-keyword'>where</span>
<a name="line-185"></a>  <span class='hs-varid'>go</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-186"></a>    <span class='hs-varid'>t</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-conid'>B8</span><span class='hs-varop'>.</span><span class='hs-varid'>takeWhile</span> <span class='hs-varid'>p</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>get</span>
<a name="line-187"></a>    <span class='hs-varid'>continue</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>inputSpansChunks</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-188"></a>    <span class='hs-varid'>when</span> <span class='hs-varid'>continue</span> <span class='hs-varid'>go</span>
<a name="line-189"></a><span class='hs-comment'>{-# INLINE skipWhile #-}</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="takeTill"></a><span class='hs-comment'>-- | Consume input as long as the predicate returns 'False'</span>
<a name="line-192"></a><span class='hs-comment'>-- (i.e. until it returns 'True'), and return the consumed input.</span>
<a name="line-193"></a><span class='hs-comment'>--</span>
<a name="line-194"></a><span class='hs-comment'>-- This parser does not fail.  It will return an empty string if the</span>
<a name="line-195"></a><span class='hs-comment'>-- predicate returns 'True' on the first byte of input.</span>
<a name="line-196"></a><span class='hs-comment'>--</span>
<a name="line-197"></a><span class='hs-comment'>-- /Note/: Because this parser does not fail, do not use it with</span>
<a name="line-198"></a><span class='hs-comment'>-- combinators such as 'Control.Applicative.many', because such</span>
<a name="line-199"></a><span class='hs-comment'>-- parsers loop until a failure occurs.  Careless use will thus result</span>
<a name="line-200"></a><span class='hs-comment'>-- in an infinite loop.</span>
<a name="line-201"></a><span class='hs-definition'>takeTill</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-202"></a><span class='hs-definition'>takeTill</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>takeWhile</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-203"></a><span class='hs-comment'>{-# INLINE takeTill #-}</span>
<a name="line-204"></a>
<a name="line-205"></a><a name="takeWhile"></a><span class='hs-comment'>-- | Consume input as long as the predicate returns 'True', and return</span>
<a name="line-206"></a><span class='hs-comment'>-- the consumed input.</span>
<a name="line-207"></a><span class='hs-comment'>--</span>
<a name="line-208"></a><span class='hs-comment'>-- This parser does not fail.  It will return an empty string if the</span>
<a name="line-209"></a><span class='hs-comment'>-- predicate returns 'False' on the first byte of input.</span>
<a name="line-210"></a><span class='hs-comment'>--</span>
<a name="line-211"></a><span class='hs-comment'>-- /Note/: Because this parser does not fail, do not use it with</span>
<a name="line-212"></a><span class='hs-comment'>-- combinators such as 'Control.Applicative.many', because such</span>
<a name="line-213"></a><span class='hs-comment'>-- parsers loop until a failure occurs.  Careless use will thus result</span>
<a name="line-214"></a><span class='hs-comment'>-- in an infinite loop.</span>
<a name="line-215"></a><span class='hs-definition'>takeWhile</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-216"></a><span class='hs-definition'>takeWhile</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>go</span> <span class='hs-conid'>[]</span>
<a name="line-217"></a> <span class='hs-keyword'>where</span>
<a name="line-218"></a>  <span class='hs-varid'>go</span> <span class='hs-varid'>acc</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-219"></a>    <span class='hs-varid'>s</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-conid'>B8</span><span class='hs-varop'>.</span><span class='hs-varid'>takeWhile</span> <span class='hs-varid'>p</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>get</span>
<a name="line-220"></a>    <span class='hs-varid'>continue</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>inputSpansChunks</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-221"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>continue</span>
<a name="line-222"></a>      <span class='hs-keyword'>then</span> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-conop'>:</span><span class='hs-varid'>acc</span><span class='hs-layout'>)</span>
<a name="line-223"></a>      <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-conop'>:</span><span class='hs-varid'>acc</span><span class='hs-layout'>)</span>
<a name="line-224"></a><span class='hs-comment'>{-# INLINE takeWhile #-}</span>
<a name="line-225"></a>
<a name="line-226"></a><a name="takeRest"></a><span class='hs-definition'>takeRest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span>
<a name="line-227"></a><span class='hs-definition'>takeRest</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-conid'>[]</span>
<a name="line-228"></a> <span class='hs-keyword'>where</span>
<a name="line-229"></a>  <span class='hs-varid'>go</span> <span class='hs-varid'>acc</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-230"></a>    <span class='hs-varid'>input</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>wantInput</span>
<a name="line-231"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>input</span>
<a name="line-232"></a>      <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-233"></a>        <span class='hs-varid'>s</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>get</span>
<a name="line-234"></a>        <span class='hs-varid'>advance</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-235"></a>        <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-conop'>:</span><span class='hs-varid'>acc</span><span class='hs-layout'>)</span>
<a name="line-236"></a>      <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-varid'>acc</span><span class='hs-layout'>)</span>
<a name="line-237"></a>
<a name="line-238"></a><a name="takeByteString"></a><span class='hs-comment'>-- | Consume all remaining input and return it as a single string.</span>
<a name="line-239"></a><span class='hs-definition'>takeByteString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-240"></a><span class='hs-definition'>takeByteString</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>takeRest</span>
<a name="line-241"></a>
<a name="line-242"></a><a name="takeLazyByteString"></a><span class='hs-comment'>-- | Consume all remaining input and return it as a single string.</span>
<a name="line-243"></a><span class='hs-definition'>takeLazyByteString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>L</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-244"></a><span class='hs-definition'>takeLazyByteString</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>L</span><span class='hs-varop'>.</span><span class='hs-varid'>fromChunks</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>takeRest</span>
<a name="line-245"></a>
<a name="line-246"></a><a name="T"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>T</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span> <span class='hs-varid'>s</span>
<a name="line-247"></a>
<a name="line-248"></a><a name="scan_"></a><span class='hs-definition'>scan_</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-249"></a>         <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>r</span>
<a name="line-250"></a><span class='hs-definition'>scan_</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s0</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>s0</span>
<a name="line-251"></a> <span class='hs-keyword'>where</span>
<a name="line-252"></a>  <span class='hs-varid'>go</span> <span class='hs-varid'>acc</span> <span class='hs-varid'>s1</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-253"></a>    <span class='hs-keyword'>let</span> <span class='hs-varid'>scanner</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>PS</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>off</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-254"></a>          <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>fp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr0</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>do</span>
<a name="line-255"></a>            <span class='hs-keyword'>let</span> <span class='hs-varid'>start</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ptr0</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>off</span>
<a name="line-256"></a>                <span class='hs-varid'>end</span>   <span class='hs-keyglyph'>=</span> <span class='hs-varid'>start</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>len</span>
<a name="line-257"></a>                <span class='hs-varid'>inner</span> <span class='hs-varid'>ptr</span> <span class='hs-varop'>!</span><span class='hs-varid'>s</span>
<a name="line-258"></a>                  <span class='hs-keyglyph'>|</span> <span class='hs-varid'>ptr</span> <span class='hs-varop'>&lt;</span> <span class='hs-varid'>end</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-259"></a>                    <span class='hs-varid'>w</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>ptr</span>
<a name="line-260"></a>                    <span class='hs-keyword'>case</span> <span class='hs-varid'>p</span> <span class='hs-varid'>s</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>of</span>
<a name="line-261"></a>                      <span class='hs-conid'>Just</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>inner</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptr</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>s'</span>
<a name="line-262"></a>                      <span class='hs-keyword'>_</span>       <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>done</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptr</span> <span class='hs-varop'>`minusPtr`</span> <span class='hs-varid'>start</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-263"></a>                  <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>done</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptr</span> <span class='hs-varop'>`minusPtr`</span> <span class='hs-varid'>start</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-264"></a>                <span class='hs-varid'>done</span> <span class='hs-varop'>!</span><span class='hs-varid'>i</span> <span class='hs-varop'>!</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span> <span class='hs-varid'>i</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-265"></a>            <span class='hs-varid'>inner</span> <span class='hs-varid'>start</span> <span class='hs-varid'>s1</span>
<a name="line-266"></a>    <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>get</span>
<a name="line-267"></a>    <span class='hs-keyword'>let</span> <span class='hs-conid'>T</span> <span class='hs-varid'>i</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inlinePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>scanner</span> <span class='hs-varid'>bs</span>
<a name="line-268"></a>        <span class='hs-varop'>!</span><span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeTake</span> <span class='hs-varid'>i</span> <span class='hs-varid'>bs</span>
<a name="line-269"></a>    <span class='hs-varid'>continue</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>inputSpansChunks</span> <span class='hs-varid'>i</span>
<a name="line-270"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>continue</span>
<a name="line-271"></a>      <span class='hs-keyword'>then</span> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span><span class='hs-conop'>:</span><span class='hs-varid'>acc</span><span class='hs-layout'>)</span> <span class='hs-varid'>s'</span>
<a name="line-272"></a>      <span class='hs-keyword'>else</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s'</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span><span class='hs-conop'>:</span><span class='hs-varid'>acc</span><span class='hs-layout'>)</span>
<a name="line-273"></a><span class='hs-comment'>{-# INLINE scan_ #-}</span>
<a name="line-274"></a>
<a name="line-275"></a><a name="scan"></a><span class='hs-comment'>-- | A stateful scanner.  The predicate consumes and transforms a</span>
<a name="line-276"></a><span class='hs-comment'>-- state argument, and each transformed state is passed to successive</span>
<a name="line-277"></a><span class='hs-comment'>-- invocations of the predicate on each byte of the input until one</span>
<a name="line-278"></a><span class='hs-comment'>-- returns 'Nothing' or the input ends.</span>
<a name="line-279"></a><span class='hs-comment'>--</span>
<a name="line-280"></a><span class='hs-comment'>-- This parser does not fail.  It will return an empty string if the</span>
<a name="line-281"></a><span class='hs-comment'>-- predicate returns 'Nothing' on the first byte of input.</span>
<a name="line-282"></a><span class='hs-comment'>--</span>
<a name="line-283"></a><span class='hs-comment'>-- /Note/: Because this parser does not fail, do not use it with</span>
<a name="line-284"></a><span class='hs-comment'>-- combinators such as 'Control.Applicative.many', because such</span>
<a name="line-285"></a><span class='hs-comment'>-- parsers loop until a failure occurs.  Careless use will thus result</span>
<a name="line-286"></a><span class='hs-comment'>-- in an infinite loop.</span>
<a name="line-287"></a><span class='hs-definition'>scan</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-288"></a><span class='hs-definition'>scan</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>scan_</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>chunks</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-289"></a>  <span class='hs-keyword'>case</span> <span class='hs-varid'>chunks</span> <span class='hs-keyword'>of</span>
<a name="line-290"></a>    <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-291"></a>    <span class='hs-varid'>xs</span>  <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>xs</span>
<a name="line-292"></a><span class='hs-comment'>{-# INLINE scan #-}</span>
<a name="line-293"></a>
<a name="line-294"></a><a name="runScanner"></a><span class='hs-comment'>-- | Like 'scan', but generalized to return the final state of the</span>
<a name="line-295"></a><span class='hs-comment'>-- scanner.</span>
<a name="line-296"></a><span class='hs-definition'>runScanner</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-297"></a><span class='hs-definition'>runScanner</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>scan_</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-298"></a><span class='hs-comment'>{-# INLINE runScanner #-}</span>
<a name="line-299"></a>
<a name="line-300"></a><a name="takeWhile1"></a><span class='hs-comment'>-- | Consume input as long as the predicate returns 'True', and return</span>
<a name="line-301"></a><span class='hs-comment'>-- the consumed input.</span>
<a name="line-302"></a><span class='hs-comment'>--</span>
<a name="line-303"></a><span class='hs-comment'>-- This parser requires the predicate to succeed on at least one byte</span>
<a name="line-304"></a><span class='hs-comment'>-- of input: it will fail if the predicate never returns 'True' or if</span>
<a name="line-305"></a><span class='hs-comment'>-- there is no input left.</span>
<a name="line-306"></a><span class='hs-definition'>takeWhile1</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-307"></a><span class='hs-definition'>takeWhile1</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-308"></a>  <span class='hs-layout'>(</span><span class='hs-varop'>`when`</span> <span class='hs-varid'>demandInput</span><span class='hs-layout'>)</span> <span class='hs-varop'>=&lt;&lt;</span> <span class='hs-varid'>endOfChunk</span>
<a name="line-309"></a>  <span class='hs-varid'>s</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-conid'>B8</span><span class='hs-varop'>.</span><span class='hs-varid'>takeWhile</span> <span class='hs-varid'>p</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>get</span>
<a name="line-310"></a>  <span class='hs-keyword'>let</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span>
<a name="line-311"></a>  <span class='hs-keyword'>if</span> <span class='hs-varid'>len</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
<a name="line-312"></a>    <span class='hs-keyword'>then</span> <span class='hs-varid'>fail</span> <span class='hs-str'>"takeWhile1"</span>
<a name="line-313"></a>    <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-314"></a>      <span class='hs-varid'>advance</span> <span class='hs-varid'>len</span>
<a name="line-315"></a>      <span class='hs-varid'>eoc</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>endOfChunk</span>
<a name="line-316"></a>      <span class='hs-keyword'>if</span> <span class='hs-varid'>eoc</span>
<a name="line-317"></a>        <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-varop'>&lt;&gt;</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>takeWhile</span> <span class='hs-varid'>p</span>
<a name="line-318"></a>        <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span>
<a name="line-319"></a>
<a name="line-320"></a><a name="inClass"></a><span class='hs-comment'>-- | Match any byte in a set.</span>
<a name="line-321"></a><span class='hs-comment'>--</span>
<a name="line-322"></a><span class='hs-comment'>-- &gt;vowel = inClass "aeiou"</span>
<a name="line-323"></a><span class='hs-comment'>--</span>
<a name="line-324"></a><span class='hs-comment'>-- Range notation is supported.</span>
<a name="line-325"></a><span class='hs-comment'>--</span>
<a name="line-326"></a><span class='hs-comment'>-- &gt;halfAlphabet = inClass "a-nA-N"</span>
<a name="line-327"></a><span class='hs-comment'>--</span>
<a name="line-328"></a><span class='hs-comment'>-- To add a literal @\'-\'@ to a set, place it at the beginning or end</span>
<a name="line-329"></a><span class='hs-comment'>-- of the string.</span>
<a name="line-330"></a><span class='hs-definition'>inClass</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-331"></a><span class='hs-definition'>inClass</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>`memberWord8`</span> <span class='hs-varid'>mySet</span><span class='hs-layout'>)</span>
<a name="line-332"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>mySet</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>charClass</span> <span class='hs-varid'>s</span>
<a name="line-333"></a>          <span class='hs-comment'>{-# NOINLINE mySet #-}</span>
<a name="line-334"></a><span class='hs-comment'>{-# INLINE inClass #-}</span>
<a name="line-335"></a>
<a name="line-336"></a><a name="notInClass"></a><span class='hs-comment'>-- | Match any byte not in a set.</span>
<a name="line-337"></a><span class='hs-definition'>notInClass</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-338"></a><span class='hs-definition'>notInClass</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>inClass</span> <span class='hs-varid'>s</span>
<a name="line-339"></a><span class='hs-comment'>{-# INLINE notInClass #-}</span>
<a name="line-340"></a>
<a name="line-341"></a><a name="anyWord8"></a><span class='hs-comment'>-- | Match any byte.</span>
<a name="line-342"></a><span class='hs-definition'>anyWord8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Word8</span>
<a name="line-343"></a><span class='hs-definition'>anyWord8</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>satisfy</span> <span class='hs-varop'>$</span> <span class='hs-varid'>const</span> <span class='hs-conid'>True</span>
<a name="line-344"></a><span class='hs-comment'>{-# INLINE anyWord8 #-}</span>
<a name="line-345"></a>
<a name="line-346"></a><a name="word8"></a><span class='hs-comment'>-- | Match a specific byte.</span>
<a name="line-347"></a><span class='hs-definition'>word8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Word8</span>
<a name="line-348"></a><span class='hs-definition'>word8</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>satisfy</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;?&gt;</span> <span class='hs-varid'>show</span> <span class='hs-varid'>c</span>
<a name="line-349"></a><span class='hs-comment'>{-# INLINE word8 #-}</span>
<a name="line-350"></a>
<a name="line-351"></a><a name="notWord8"></a><span class='hs-comment'>-- | Match any byte except the given one.</span>
<a name="line-352"></a><span class='hs-definition'>notWord8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Word8</span>
<a name="line-353"></a><span class='hs-definition'>notWord8</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>satisfy</span> <span class='hs-layout'>(</span><span class='hs-varop'>/=</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;?&gt;</span> <span class='hs-str'>"not "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>c</span>
<a name="line-354"></a><span class='hs-comment'>{-# INLINE notWord8 #-}</span>
<a name="line-355"></a>
<a name="line-356"></a><a name="peekWord8"></a><span class='hs-comment'>-- | Match any byte, to perform lookahead. Returns 'Nothing' if end of</span>
<a name="line-357"></a><span class='hs-comment'>-- input has been reached. Does not consume any input.</span>
<a name="line-358"></a><span class='hs-comment'>--</span>
<a name="line-359"></a><span class='hs-comment'>-- /Note/: Because this parser does not fail, do not use it with</span>
<a name="line-360"></a><span class='hs-comment'>-- combinators such as 'Control.Applicative.many', because such</span>
<a name="line-361"></a><span class='hs-comment'>-- parsers loop until a failure occurs.  Careless use will thus result</span>
<a name="line-362"></a><span class='hs-comment'>-- in an infinite loop.</span>
<a name="line-363"></a><span class='hs-definition'>peekWord8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-364"></a><span class='hs-definition'>peekWord8</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>pos_</span><span class='hs-layout'>)</span> <span class='hs-varid'>more</span> <span class='hs-sel'>_lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-365"></a>  <span class='hs-keyword'>case</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>of</span>
<a name="line-366"></a>    <span class='hs-keyword'>_</span><span class='hs-keyglyph'>|</span> <span class='hs-varid'>pos_</span> <span class='hs-varop'>&lt;</span> <span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-367"></a>       <span class='hs-keyword'>let</span> <span class='hs-varop'>!</span><span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeIndex</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos_</span>
<a name="line-368"></a>       <span class='hs-keyword'>in</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-369"></a>     <span class='hs-keyglyph'>|</span> <span class='hs-varid'>more</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Complete</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-370"></a>       <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-conid'>Nothing</span>
<a name="line-371"></a>     <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-372"></a>       <span class='hs-keyword'>let</span> <span class='hs-varid'>succ'</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varop'>!</span><span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeIndex</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos_</span>
<a name="line-373"></a>                                 <span class='hs-keyword'>in</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-374"></a>           <span class='hs-varid'>lose'</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-conid'>Nothing</span>
<a name="line-375"></a>       <span class='hs-keyword'>in</span> <span class='hs-varid'>prompt</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose'</span> <span class='hs-varid'>succ'</span>
<a name="line-376"></a><span class='hs-comment'>{-# INLINE peekWord8 #-}</span>
<a name="line-377"></a>
<a name="line-378"></a><a name="peekWord8'"></a><span class='hs-comment'>-- | Match any byte, to perform lookahead.  Does not consume any</span>
<a name="line-379"></a><span class='hs-comment'>-- input, but will fail if end of input has been reached.</span>
<a name="line-380"></a><span class='hs-definition'>peekWord8'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Word8</span>
<a name="line-381"></a><span class='hs-definition'>peekWord8'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-382"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>lengthAtLeast</span> <span class='hs-varid'>pos</span> <span class='hs-num'>1</span> <span class='hs-varid'>t</span>
<a name="line-383"></a>    <span class='hs-keyword'>then</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-layout'>(</span><span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeIndex</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromPos</span> <span class='hs-varid'>pos</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-384"></a>    <span class='hs-keyword'>else</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>succ'</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-varid'>bs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeHead</span> <span class='hs-varid'>bs'</span>
<a name="line-385"></a>         <span class='hs-keyword'>in</span> <span class='hs-varid'>ensureSuspended</span> <span class='hs-num'>1</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ'</span>
<a name="line-386"></a><span class='hs-comment'>{-# INLINE peekWord8' #-}</span>
<a name="line-387"></a>
<a name="line-388"></a><a name="endOfLine"></a><span class='hs-comment'>-- | Match either a single newline character @\'\\n\'@, or a carriage</span>
<a name="line-389"></a><span class='hs-comment'>-- return followed by a newline character @\"\\r\\n\"@.</span>
<a name="line-390"></a><span class='hs-definition'>endOfLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>()</span>
<a name="line-391"></a><span class='hs-definition'>endOfLine</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>word8</span> <span class='hs-num'>10</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;|&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>string</span> <span class='hs-str'>"\r\n"</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-392"></a>
<a name="line-393"></a><a name="failK"></a><span class='hs-comment'>-- | Terminal failure continuation.</span>
<a name="line-394"></a><span class='hs-definition'>failK</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Failure</span> <span class='hs-varid'>a</span>
<a name="line-395"></a><span class='hs-definition'>failK</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>pos</span><span class='hs-layout'>)</span> <span class='hs-sel'>_more</span> <span class='hs-varid'>stack</span> <span class='hs-varid'>msg</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Fail</span> <span class='hs-layout'>(</span><span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeDrop</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varid'>stack</span> <span class='hs-varid'>msg</span>
<a name="line-396"></a><span class='hs-comment'>{-# INLINE failK #-}</span>
<a name="line-397"></a>
<a name="line-398"></a><a name="successK"></a><span class='hs-comment'>-- | Terminal success continuation.</span>
<a name="line-399"></a><span class='hs-definition'>successK</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Success</span> <span class='hs-varid'>a</span> <span class='hs-varid'>a</span>
<a name="line-400"></a><span class='hs-definition'>successK</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>pos</span><span class='hs-layout'>)</span> <span class='hs-sel'>_more</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Done</span> <span class='hs-layout'>(</span><span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeDrop</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-401"></a><span class='hs-comment'>{-# INLINE successK #-}</span>
<a name="line-402"></a>
<a name="line-403"></a><a name="parse"></a><span class='hs-comment'>-- | Run a parser.</span>
<a name="line-404"></a><span class='hs-definition'>parse</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Result</span> <span class='hs-varid'>a</span>
<a name="line-405"></a><span class='hs-definition'>parse</span> <span class='hs-varid'>m</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>runParser</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>buffer</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-conid'>Incomplete</span> <span class='hs-varid'>failK</span> <span class='hs-varid'>successK</span>
<a name="line-406"></a><span class='hs-comment'>{-# INLINE parse #-}</span>
<a name="line-407"></a>
<a name="line-408"></a><a name="parseOnly"></a><span class='hs-comment'>-- | Run a parser that cannot be resupplied via a 'Partial' result.</span>
<a name="line-409"></a><span class='hs-comment'>--</span>
<a name="line-410"></a><span class='hs-comment'>-- This function does not force a parser to consume all of its input.</span>
<a name="line-411"></a><span class='hs-comment'>-- Instead, any residual input will be discarded.  To force a parser</span>
<a name="line-412"></a><span class='hs-comment'>-- to consume all of its input, use something like this:</span>
<a name="line-413"></a><span class='hs-comment'>--</span>
<a name="line-414"></a><span class='hs-comment'>-- @</span>
<a name="line-415"></a><span class='hs-comment'>--'parseOnly' (myParser 'Control.Applicative.&lt;*' 'endOfInput')</span>
<a name="line-416"></a><span class='hs-comment'>-- @</span>
<a name="line-417"></a><span class='hs-definition'>parseOnly</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-varid'>a</span>
<a name="line-418"></a><span class='hs-definition'>parseOnly</span> <span class='hs-varid'>m</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>runParser</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>buffer</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-conid'>Complete</span> <span class='hs-varid'>failK</span> <span class='hs-varid'>successK</span> <span class='hs-keyword'>of</span>
<a name="line-419"></a>                  <span class='hs-conid'>Fail</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>err</span>
<a name="line-420"></a>                  <span class='hs-conid'>Done</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>a</span>     <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Right</span> <span class='hs-varid'>a</span>
<a name="line-421"></a>                  <span class='hs-keyword'>_</span>            <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>error</span> <span class='hs-str'>"parseOnly: impossible error!"</span>
<a name="line-422"></a><span class='hs-comment'>{-# INLINE parseOnly #-}</span>
<a name="line-423"></a>
<a name="line-424"></a><a name="get"></a><span class='hs-definition'>get</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-425"></a><span class='hs-definition'>get</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-sel'>_lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-426"></a>  <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-layout'>(</span><span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>unsafeDrop</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromPos</span> <span class='hs-varid'>pos</span><span class='hs-layout'>)</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-427"></a><span class='hs-comment'>{-# INLINE get #-}</span>
<a name="line-428"></a>
<a name="line-429"></a><a name="endOfChunk"></a><span class='hs-definition'>endOfChunk</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Bool</span>
<a name="line-430"></a><span class='hs-definition'>endOfChunk</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-sel'>_lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-431"></a>  <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromPos</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-432"></a><span class='hs-comment'>{-# INLINE endOfChunk #-}</span>
<a name="line-433"></a>
<a name="line-434"></a><a name="inputSpansChunks"></a><span class='hs-definition'>inputSpansChunks</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Bool</span>
<a name="line-435"></a><span class='hs-definition'>inputSpansChunks</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos_</span> <span class='hs-varid'>more</span> <span class='hs-sel'>_lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-436"></a>  <span class='hs-keyword'>let</span> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pos_</span> <span class='hs-varop'>+</span> <span class='hs-conid'>Pos</span> <span class='hs-varid'>i</span>
<a name="line-437"></a>  <span class='hs-keyword'>in</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>fromPos</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>&lt;</span> <span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>t</span> <span class='hs-varop'>||</span> <span class='hs-varid'>more</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Complete</span>
<a name="line-438"></a>     <span class='hs-keyword'>then</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-conid'>False</span>
<a name="line-439"></a>     <span class='hs-keyword'>else</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>lose'</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-conid'>False</span>
<a name="line-440"></a>              <span class='hs-varid'>succ'</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-conid'>True</span>
<a name="line-441"></a>          <span class='hs-keyword'>in</span> <span class='hs-varid'>prompt</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose'</span> <span class='hs-varid'>succ'</span>
<a name="line-442"></a><span class='hs-comment'>{-# INLINE inputSpansChunks #-}</span>
<a name="line-443"></a>
<a name="line-444"></a><a name="advance"></a><span class='hs-definition'>advance</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>()</span>
<a name="line-445"></a><span class='hs-definition'>advance</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-sel'>_lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-446"></a>  <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-varid'>pos</span> <span class='hs-varop'>+</span> <span class='hs-conid'>Pos</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varid'>more</span> <span class='hs-conid'>()</span>
<a name="line-447"></a><span class='hs-comment'>{-# INLINE advance #-}</span>
<a name="line-448"></a>
<a name="line-449"></a><a name="ensureSuspended"></a><span class='hs-definition'>ensureSuspended</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Buffer</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Pos</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>More</span>
<a name="line-450"></a>                <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Failure</span> <span class='hs-varid'>r</span>
<a name="line-451"></a>                <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Success</span> <span class='hs-conid'>ByteString</span> <span class='hs-varid'>r</span>
<a name="line-452"></a>                <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Result</span> <span class='hs-varid'>r</span>
<a name="line-453"></a><span class='hs-definition'>ensureSuspended</span> <span class='hs-varid'>n</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>=</span>
<a name="line-454"></a>    <span class='hs-varid'>runParser</span> <span class='hs-layout'>(</span><span class='hs-varid'>demandInput</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>go</span><span class='hs-layout'>)</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ</span>
<a name="line-455"></a>  <span class='hs-keyword'>where</span> <span class='hs-varid'>go</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-varid'>lose'</span> <span class='hs-varid'>succ'</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-456"></a>          <span class='hs-keyword'>if</span> <span class='hs-varid'>lengthAtLeast</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>n</span> <span class='hs-varid'>t'</span>
<a name="line-457"></a>          <span class='hs-keyword'>then</span> <span class='hs-varid'>succ'</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-layout'>(</span><span class='hs-varid'>substring</span> <span class='hs-varid'>pos</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varid'>t'</span><span class='hs-layout'>)</span>
<a name="line-458"></a>          <span class='hs-keyword'>else</span> <span class='hs-varid'>runParser</span> <span class='hs-layout'>(</span><span class='hs-varid'>demandInput</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>go</span><span class='hs-layout'>)</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-varid'>lose'</span> <span class='hs-varid'>succ'</span>
<a name="line-459"></a>
<a name="line-460"></a><a name="ensure"></a><span class='hs-comment'>-- | If at least @n@ elements of input are available, return the</span>
<a name="line-461"></a><span class='hs-comment'>-- current input, otherwise fail.</span>
<a name="line-462"></a><span class='hs-definition'>ensure</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ByteString</span>
<a name="line-463"></a><span class='hs-definition'>ensure</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-464"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>lengthAtLeast</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>n</span> <span class='hs-varid'>t</span>
<a name="line-465"></a>    <span class='hs-keyword'>then</span> <span class='hs-varid'>succ</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-layout'>(</span><span class='hs-varid'>substring</span> <span class='hs-varid'>pos</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-466"></a>    <span class='hs-comment'>-- The uncommon case is kept out-of-line to reduce code size:</span>
<a name="line-467"></a>    <span class='hs-keyword'>else</span> <span class='hs-varid'>ensureSuspended</span> <span class='hs-varid'>n</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ</span>
<a name="line-468"></a><span class='hs-comment'>-- Non-recursive so the bounds check can be inlined:</span>
<a name="line-469"></a><span class='hs-comment'>{-# INLINE ensure #-}</span>
<a name="line-470"></a>
<a name="line-471"></a><a name="match"></a><span class='hs-comment'>-- | Return both the result of a parse and the portion of the input</span>
<a name="line-472"></a><span class='hs-comment'>-- that was consumed while it was being parsed.</span>
<a name="line-473"></a><span class='hs-definition'>match</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Parser</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-474"></a><span class='hs-definition'>match</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-475"></a>  <span class='hs-keyword'>let</span> <span class='hs-varid'>succ'</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span>
<a name="line-476"></a>        <span class='hs-varid'>succ</span> <span class='hs-varid'>t'</span> <span class='hs-varid'>pos'</span> <span class='hs-varid'>more'</span> <span class='hs-layout'>(</span><span class='hs-varid'>substring</span> <span class='hs-varid'>pos</span> <span class='hs-layout'>(</span><span class='hs-varid'>pos'</span><span class='hs-comment'>-</span><span class='hs-varid'>pos</span><span class='hs-layout'>)</span> <span class='hs-varid'>t'</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-477"></a>  <span class='hs-keyword'>in</span> <span class='hs-varid'>runParser</span> <span class='hs-varid'>p</span> <span class='hs-varid'>t</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>more</span> <span class='hs-varid'>lose</span> <span class='hs-varid'>succ'</span>
<a name="line-478"></a>
<a name="line-479"></a><a name="lengthAtLeast"></a><span class='hs-definition'>lengthAtLeast</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Pos</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Buffer</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-480"></a><span class='hs-definition'>lengthAtLeast</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>pos</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>bs</span> <span class='hs-varop'>&gt;=</span> <span class='hs-varid'>pos</span> <span class='hs-varop'>+</span> <span class='hs-varid'>n</span>
<a name="line-481"></a><span class='hs-comment'>{-# INLINE lengthAtLeast #-}</span>
<a name="line-482"></a>
<a name="line-483"></a><a name="substring"></a><span class='hs-definition'>substring</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Pos</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Pos</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Buffer</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>ByteString</span>
<a name="line-484"></a><span class='hs-definition'>substring</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>pos</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pos</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Buf</span><span class='hs-varop'>.</span><span class='hs-varid'>substring</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>n</span>
<a name="line-485"></a><span class='hs-comment'>{-# INLINE substring #-}</span>
</pre></body>
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