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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Data-Attoparsec-ByteString-Char8.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">attoparsec-0.13.0.1: Fast combinator parsing for bytestrings and text</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Copyright</th><td>Bryan O'Sullivan 2007-2015</td></tr><tr><th>License</th><td>BSD3</td></tr><tr><th>Maintainer</th><td>bos@serpentine.com</td></tr><tr><th>Stability</th><td>experimental</td></tr><tr><th>Portability</th><td>unknown</td></tr><tr><th>Safe Haskell</th><td>Trustworthy</td></tr><tr><th>Language</th><td>Haskell98</td></tr></table><p class="caption">Data.Attoparsec.ByteString.Char8</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">Character encodings</a></li><li><a href="#g:2">Parser types</a></li><li><a href="#g:3">Running parsers</a><ul><li><a href="#g:4">Result conversion</a></li></ul></li><li><a href="#g:5">Parsing individual characters</a><ul><li><a href="#g:6">Lookahead</a></li><li><a href="#g:7">Special character parsers</a></li><li><a href="#g:8">Fast predicates</a><ul><li><a href="#g:9">Character classes</a></li></ul></li></ul></li><li><a href="#g:10">Efficient string handling</a><ul><li><a href="#g:11">String combinators</a></li><li><a href="#g:12">Consume all remaining input</a></li></ul></li><li><a href="#g:13">Text parsing</a></li><li><a href="#g:14">Numeric parsers</a></li><li><a href="#g:15">Combinators</a></li><li><a href="#g:16">State observation and manipulation functions</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>Simple, efficient, character-oriented combinator parsing for
<code><a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></code> strings, loosely based on the Parsec library.</p></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">type</span> <a href="#t:Parser">Parser</a> = <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:Result">Result</a> = <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><span class="keyword">data</span> <a href="#t:IResult">IResult</a> i r<ul class="subs"><li>= <a href="#v:Fail">Fail</a> i [<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a>] <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a></li><li>| <a href="#v:Partial">Partial</a> (i -> <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r)</li><li>| <a href="#v:Done">Done</a> i r</li></ul></li><li class="src short"><a href="#v:compareResults">compareResults</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a> i, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a> r) => <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r -> <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:parse">parse</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> a</li><li class="src short"><a href="#v:feed">feed</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Monoid.html#t:Monoid">Monoid</a> i => <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r -> i -> <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r</li><li class="src short"><a href="#v:parseOnly">parseOnly</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Either.html#t:Either">Either</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> a</li><li class="src short"><a href="#v:parseWith">parseWith</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:Monad">Monad</a> m => m <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> m (<a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> a)</li><li class="src short"><a href="#v:parseTest">parseTest</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Show.html#t:Show">Show</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/System-IO.html#t:IO">IO</a> ()</li><li class="src short"><a href="#v:maybeResult">maybeResult</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> r -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> r</li><li class="src short"><a href="#v:eitherResult">eitherResult</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> r -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Either.html#t:Either">Either</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> r</li><li class="src short"><a href="#v:char">char</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:char8">char8</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a></li><li class="src short"><a href="#v:anyChar">anyChar</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:notChar">notChar</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:satisfy">satisfy</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:peekChar">peekChar</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a>)</li><li class="src short"><a href="#v:peekChar-39-">peekChar'</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:digit">digit</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:letter_iso8859_15">letter_iso8859_15</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:letter_ascii">letter_ascii</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:space">space</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:isDigit">isDigit</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isDigit_w8">isDigit_w8</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isAlpha_iso8859_15">isAlpha_iso8859_15</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isAlpha_ascii">isAlpha_ascii</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isSpace">isSpace</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isSpace_w8">isSpace_w8</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:inClass">inClass</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:notInClass">notInClass</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:string">string</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:stringCI">stringCI</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:skipSpace">skipSpace</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> ()</li><li class="src short"><a href="#v:skipWhile">skipWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> ()</li><li class="src short"><a href="#v:take">take</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:scan">scan</a> :: s -> (s -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> s) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:takeWhile">takeWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:takeWhile1">takeWhile1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:takeTill">takeTill</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:.-42--62-">(.*>)</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a</li><li class="src short"><a href="#v:-60--42-.">(<*.)</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a</li><li class="src short"><a href="#v:takeByteString">takeByteString</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:takeLazyByteString">takeLazyByteString</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString-Lazy.html#t:ByteString">ByteString</a></li><li class="src short"><a href="#v:endOfLine">endOfLine</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> ()</li><li class="src short"><a href="#v:isEndOfLine">isEndOfLine</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isHorizontalSpace">isHorizontalSpace</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:decimal">decimal</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Integral">Integral</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a</li><li class="src short"><a href="#v:hexadecimal">hexadecimal</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Integral">Integral</a> a, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bits.html#t:Bits">Bits</a> a) => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a</li><li class="src short"><a href="#v:signed">signed</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Num">Num</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a</li><li class="src short"><a href="#v:double">double</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Double">Double</a></li><li class="src short"><span class="keyword">data</span> <a href="#t:Number">Number</a><ul class="subs"><li>= <a href="#v:I">I</a> !<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Integer">Integer</a></li><li>| <a href="#v:D">D</a> !<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Double">Double</a></li></ul></li><li class="src short"><a href="#v:number">number</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></li><li class="src short"><a href="#v:rational">rational</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Fractional">Fractional</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a</li><li class="src short"><a href="#v:scientific">scientific</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/libghc-scientific-doc/html/Data-Scientific.html#t:Scientific">Scientific</a></li><li class="src short"><a href="#v:try">try</a> :: <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a -> <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a</li><li class="src short"><a href="#v:-60--63--62-">(<?>)</a> :: <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> -> <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a</li><li class="src short"><a href="#v:choice">choice</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => [f a] -> f a</li><li class="src short"><a href="#v:count">count</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:Monad">Monad</a> m => <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a> -> m a -> m [a]</li><li class="src short"><a href="#v:option">option</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => a -> f a -> f a</li><li class="src short"><a href="#v:many-39-">many'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m [a]</li><li class="src short"><a href="#v:many1">many1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f [a]</li><li class="src short"><a href="#v:many1-39-">many1'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m [a]</li><li class="src short"><a href="#v:manyTill">manyTill</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f b -> f [a]</li><li class="src short"><a href="#v:manyTill-39-">manyTill'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m b -> m [a]</li><li class="src short"><a href="#v:sepBy">sepBy</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f s -> f [a]</li><li class="src short"><a href="#v:sepBy-39-">sepBy'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m s -> m [a]</li><li class="src short"><a href="#v:sepBy1">sepBy1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f s -> f [a]</li><li class="src short"><a href="#v:sepBy1-39-">sepBy1'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m s -> m [a]</li><li class="src short"><a href="#v:skipMany">skipMany</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f ()</li><li class="src short"><a href="#v:skipMany1">skipMany1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f ()</li><li class="src short"><a href="#v:eitherP">eitherP</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f b -> f (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Either.html#t:Either">Either</a> a b)</li><li class="src short"><a href="#v:match">match</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a>, a)</li><li class="src short"><a href="#v:endOfInput">endOfInput</a> :: <span class="keyword">forall</span> t. <a href="Data-Attoparsec-Internal-Types.html#t:Chunk">Chunk</a> t => <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> t ()</li><li class="src short"><a href="#v:atEnd">atEnd</a> :: <a href="Data-Attoparsec-Internal-Types.html#t:Chunk">Chunk</a> t => <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> t <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a></li></ul></div><div id="interface"><h1 id="g:1">Character encodings</h1><div class="doc"><p>This module is intended for parsing text that is
represented using an 8-bit character set, e.g. ASCII or
ISO-8859-15. It <em>does not</em> make any attempt to deal with character
encodings, multibyte characters, or wide characters. In
particular, all attempts to use characters above code point U+00FF
will give wrong answers.</p><p>Code points below U+0100 are simply translated to and from their
numeric values, so e.g. the code point U+00A4 becomes the byte
<code>0xA4</code> (which is the Euro symbol in ISO-8859-15, but the generic
currency sign in ISO-8859-1). Haskell <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a></code> values above U+00FF
are truncated, so e.g. U+1D6B7 is truncated to the byte <code>0xB7</code>.</p></div><h1 id="g:2">Parser types</h1><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:Parser" class="def">Parser</a> = <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Internal.html#Parser" class="link">Source</a></p></div><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:Result" class="def">Result</a> = <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Internal.html#Result" class="link">Source</a></p></div><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:IResult" class="def">IResult</a> i r <a href="src/Data-Attoparsec-Internal-Types.html#IResult" class="link">Source</a></p><div class="doc"><p>The result of a parse. This is parameterised over the type <code>i</code>
of string that was processed.</p><p>This type is an instance of <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Functor.html#t:Functor">Functor</a></code>, where <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Functor.html#v:fmap">fmap</a></code> transforms the
value in a <code><a href="Data-Attoparsec-ByteString-Char8.html#v:Done">Done</a></code> result.</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:Fail" class="def">Fail</a> i [<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a>] <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a></td><td class="doc"><p>The parse failed. The <code>i</code> parameter is the input that had
not yet been consumed when the failure occurred. The
<code>[</code><code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a></code><code>]</code> is a list of contexts in which the error
occurred. The <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a></code> is the message describing the error, if
any.</p></td></tr><tr><td class="src"><a name="v:Partial" class="def">Partial</a> (i -> <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r)</td><td class="doc"><p>Supply this continuation with more input so that the parser
can resume. To indicate that no more input is available, pass
an empty string to the continuation.</p><p><strong>Note</strong>: if you get a <code><a href="Data-Attoparsec-ByteString-Char8.html#v:Partial">Partial</a></code> result, do not call its
continuation more than once.</p></td></tr><tr><td class="src"><a name="v:Done" class="def">Done</a> i r</td><td class="doc"><p>The parse succeeded. The <code>i</code> parameter is the input that had
not yet been consumed (if any) when the parse succeeded.</p></td></tr></table></div><div class="subs instances"><p id="control.i:IResult" class="caption collapser" onclick="toggleSection('i:IResult')">Instances</p><div id="section.i:IResult" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Functor.html#t:Functor">Functor</a> (<a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i)</span> <a href="src/Data-Attoparsec-Internal-Types.html#line-87" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left">(<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Show.html#t:Show">Show</a> i, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Show.html#t:Show">Show</a> r) => <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Show.html#t:Show">Show</a> (<a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r)</span> <a href="src/Data-Attoparsec-Internal-Types.html#line-72" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left">(<a href="file:///usr/share/doc/ghc-doc/html/libraries/deepseq-1.4.1.1/Control-DeepSeq.html#t:NFData">NFData</a> i, <a href="file:///usr/share/doc/ghc-doc/html/libraries/deepseq-1.4.1.1/Control-DeepSeq.html#t:NFData">NFData</a> r) => <a href="file:///usr/share/doc/ghc-doc/html/libraries/deepseq-1.4.1.1/Control-DeepSeq.html#t:NFData">NFData</a> (<a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r)</span> <a href="src/Data-Attoparsec-Internal-Types.html#line-81" class="link">Source</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:compareResults" class="def">compareResults</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a> i, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a> r) => <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r -> <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-Internal.html#compareResults" class="link">Source</a></p><div class="doc"><p>Compare two <code><a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a></code> values for equality.</p><p>If both <code><a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a></code>s are <code><a href="Data-Attoparsec-ByteString-Char8.html#v:Partial">Partial</a></code>, the result will be <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#v:Nothing">Nothing</a></code>, as
they are incomplete and hence their equality cannot be known.
(This is why there is no <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a></code> instance for <code><a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a></code>.)</p></div></div><h1 id="g:3">Running parsers</h1><div class="top"><p class="src"><a name="v:parse" class="def">parse</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> a <a href="src/Data-Attoparsec-ByteString-Internal.html#parse" class="link">Source</a></p><div class="doc"><p>Run a parser.</p></div></div><div class="top"><p class="src"><a name="v:feed" class="def">feed</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Monoid.html#t:Monoid">Monoid</a> i => <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r -> i -> <a href="Data-Attoparsec-ByteString-Char8.html#t:IResult">IResult</a> i r <a href="src/Data-Attoparsec-Combinator.html#feed" class="link">Source</a></p><div class="doc"><p>If a parser has returned a <code><a href="T.html#v:Partial">Partial</a></code> result, supply it with more
input.</p></div></div><div class="top"><p class="src"><a name="v:parseOnly" class="def">parseOnly</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Either.html#t:Either">Either</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> a <a href="src/Data-Attoparsec-ByteString-Internal.html#parseOnly" class="link">Source</a></p><div class="doc"><p>Run a parser that cannot be resupplied via a <code><a href="Data-Attoparsec-ByteString-Char8.html#v:Partial">Partial</a></code> result.</p><p>This function does not force a parser to consume all of its input.
Instead, any residual input will be discarded. To force a parser
to consume all of its input, use something like this:</p><pre><code><a href="Data-Attoparsec-ByteString-Char8.html#v:parseOnly">parseOnly</a></code> (myParser <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-60--42-"><*</a></code> <code><a href="Data-Attoparsec-ByteString-Char8.html#v:endOfInput">endOfInput</a></code>)
</pre></div></div><div class="top"><p class="src"><a name="v:parseWith" class="def">parseWith</a> <a href="src/Data-Attoparsec-ByteString.html#parseWith" class="link">Source</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:Monad">Monad</a> m</td><td class="doc empty"> </td></tr><tr><td class="src">=> m <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></td><td class="doc"><p>An action that will be executed to provide the parser
with more input, if necessary. The action must return an
<code><a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#v:empty">empty</a></code> string when there is no more input available.</p></td></tr><tr><td class="src">-> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a</td><td class="doc empty"> </td></tr><tr><td class="src">-> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></td><td class="doc"><p>Initial input for the parser.</p></td></tr><tr><td class="src">-> m (<a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> a)</td><td class="doc empty"> </td></tr></table></div><div class="doc"><p>Run a parser with an initial input string, and a monadic action
that can supply more input if needed.</p></div></div><div class="top"><p class="src"><a name="v:parseTest" class="def">parseTest</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Show.html#t:Show">Show</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/System-IO.html#t:IO">IO</a> () <a href="src/Data-Attoparsec-ByteString.html#parseTest" class="link">Source</a></p><div class="doc"><p>Run a parser and print its result to standard output.</p></div></div><h2 id="g:4">Result conversion</h2><div class="top"><p class="src"><a name="v:maybeResult" class="def">maybeResult</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> r -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> r <a href="src/Data-Attoparsec-ByteString.html#maybeResult" class="link">Source</a></p><div class="doc"><p>Convert a <code><a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a></code> value to a <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a></code> value. A <code><a href="Data-Attoparsec-ByteString-Char8.html#v:Partial">Partial</a></code> result
is treated as failure.</p></div></div><div class="top"><p class="src"><a name="v:eitherResult" class="def">eitherResult</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a> r -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Either.html#t:Either">Either</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> r <a href="src/Data-Attoparsec-ByteString.html#eitherResult" class="link">Source</a></p><div class="doc"><p>Convert a <code><a href="Data-Attoparsec-ByteString-Char8.html#t:Result">Result</a></code> value to an <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Either.html#t:Either">Either</a></code> value. A <code><a href="Data-Attoparsec-ByteString-Char8.html#v:Partial">Partial</a></code>
result is treated as failure.</p></div></div><h1 id="g:5">Parsing individual characters</h1><div class="top"><p class="src"><a name="v:char" class="def">char</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#char" class="link">Source</a></p><div class="doc"><p>Match a specific character.</p></div></div><div class="top"><p class="src"><a name="v:char8" class="def">char8</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#char8" class="link">Source</a></p><div class="doc"><p>Match a specific character, but return its <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a></code> value.</p></div></div><div class="top"><p class="src"><a name="v:anyChar" class="def">anyChar</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#anyChar" class="link">Source</a></p><div class="doc"><p>Match any character.</p></div></div><div class="top"><p class="src"><a name="v:notChar" class="def">notChar</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#notChar" class="link">Source</a></p><div class="doc"><p>Match any character except the given one.</p></div></div><div class="top"><p class="src"><a name="v:satisfy" class="def">satisfy</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#satisfy" class="link">Source</a></p><div class="doc"><p>The parser <code>satisfy p</code> succeeds for any byte for which the
predicate <code>p</code> returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:True">True</a></code>. Returns the byte that is actually
parsed.</p><pre>digit = satisfy isDigit
where isDigit c = c >= '0' && c <= '9'</pre></div></div><h2 id="g:6">Lookahead</h2><div class="top"><p class="src"><a name="v:peekChar" class="def">peekChar</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a>) <a href="src/Data-Attoparsec-ByteString-Char8.html#peekChar" class="link">Source</a></p><div class="doc"><p>Match any character, to perform lookahead. Returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#v:Nothing">Nothing</a></code> if
end of input has been reached. Does not consume any input.</p><p><em>Note</em>: Because this parser does not fail, do not use it with
combinators such as <code>many</code>, because such parsers loop until a
failure occurs. Careless use will thus result in an infinite loop.</p></div></div><div class="top"><p class="src"><a name="v:peekChar-39-" class="def">peekChar'</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#peekChar%27" class="link">Source</a></p><div class="doc"><p>Match any character, to perform lookahead. Does not consume any
input, but will fail if end of input has been reached.</p></div></div><h2 id="g:7">Special character parsers</h2><div class="top"><p class="src"><a name="v:digit" class="def">digit</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#digit" class="link">Source</a></p><div class="doc"><p>Parse a single digit.</p></div></div><div class="top"><p class="src"><a name="v:letter_iso8859_15" class="def">letter_iso8859_15</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#letter_iso8859_15" class="link">Source</a></p><div class="doc"><p>Match a letter, in the ISO-8859-15 encoding.</p></div></div><div class="top"><p class="src"><a name="v:letter_ascii" class="def">letter_ascii</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#letter_ascii" class="link">Source</a></p><div class="doc"><p>Match a letter, in the ASCII encoding.</p></div></div><div class="top"><p class="src"><a name="v:space" class="def">space</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#space" class="link">Source</a></p><div class="doc"><p>Parse a space character.</p><p><em>Note</em>: This parser only gives correct answers for the ASCII
encoding. For instance, it does not recognise U+00A0 (non-breaking
space) as a space character, even though it is a valid ISO-8859-15
byte.</p></div></div><h2 id="g:8">Fast predicates</h2><div class="top"><p class="src"><a name="v:isDigit" class="def">isDigit</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isDigit" class="link">Source</a></p><div class="doc"><p>A fast digit predicate.</p></div></div><div class="top"><p class="src"><a name="v:isDigit_w8" class="def">isDigit_w8</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isDigit_w8" class="link">Source</a></p><div class="doc"><p>A fast digit predicate.</p></div></div><div class="top"><p class="src"><a name="v:isAlpha_iso8859_15" class="def">isAlpha_iso8859_15</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isAlpha_iso8859_15" class="link">Source</a></p><div class="doc"><p>A fast alphabetic predicate for the ISO-8859-15 encoding</p><p><em>Note</em>: For all character encodings other than ISO-8859-15, and
almost all Unicode code points above U+00A3, this predicate gives
<em>wrong answers</em>.</p></div></div><div class="top"><p class="src"><a name="v:isAlpha_ascii" class="def">isAlpha_ascii</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isAlpha_ascii" class="link">Source</a></p><div class="doc"><p>A fast alphabetic predicate for the ASCII encoding</p><p><em>Note</em>: For all character encodings other than ASCII, and
almost all Unicode code points above U+007F, this predicate gives
<em>wrong answers</em>.</p></div></div><div class="top"><p class="src"><a name="v:isSpace" class="def">isSpace</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isSpace" class="link">Source</a></p><div class="doc"><p>Fast predicate for matching ASCII space characters.</p><p><em>Note</em>: This predicate only gives correct answers for the ASCII
encoding. For instance, it does not recognise U+00A0 (non-breaking
space) as a space character, even though it is a valid ISO-8859-15
byte. For a Unicode-aware and only slightly slower predicate,
use <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#v:isSpace">isSpace</a></code></p></div></div><div class="top"><p class="src"><a name="v:isSpace_w8" class="def">isSpace_w8</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isSpace_w8" class="link">Source</a></p><div class="doc"><p>Fast <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a></code> predicate for matching ASCII space characters.</p></div></div><h3 id="g:9">Character classes</h3><div class="top"><p class="src"><a name="v:inClass" class="def">inClass</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#inClass" class="link">Source</a></p><div class="doc"><p>Match any character in a set.</p><pre>vowel = inClass "aeiou"</pre><p>Range notation is supported.</p><pre>halfAlphabet = inClass "a-nA-N"</pre><p>To add a literal '-' to a set, place it at the beginning or end
of the string.</p></div></div><div class="top"><p class="src"><a name="v:notInClass" class="def">notInClass</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#notInClass" class="link">Source</a></p><div class="doc"><p>Match any character not in a set.</p></div></div><h1 id="g:10">Efficient string handling</h1><div class="top"><p class="src"><a name="v:string" class="def">string</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Internal.html#string" class="link">Source</a></p><div class="doc"><p><code>string s</code> parses a sequence of bytes that identically match
<code>s</code>. Returns the parsed string (i.e. <code>s</code>). This parser consumes no
input if it fails (even if a partial match).</p><p><em>Note</em>: The behaviour of this parser is different to that of the
similarly-named parser in Parsec, as this one is all-or-nothing.
To illustrate the difference, the following parser will fail under
Parsec given an input of <code>"for"</code>:</p><pre>string "foo" <|> string "for"</pre><p>The reason for its failure is that the first branch is a
partial match, and will consume the letters <code>'f'</code> and <code>'o'</code>
before failing. In attoparsec, the above parser will <em>succeed</em> on
that input, because the failed first branch will consume nothing.</p></div></div><div class="top"><p class="src"><a name="v:stringCI" class="def">stringCI</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Internal.html#stringCI" class="link">Source</a></p><div class="doc"><p>Satisfy a literal string, ignoring case.</p></div></div><div class="top"><p class="src"><a name="v:skipSpace" class="def">skipSpace</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> () <a href="src/Data-Attoparsec-ByteString-Char8.html#skipSpace" class="link">Source</a></p><div class="doc"><p>Skip over white space.</p></div></div><div class="top"><p class="src"><a name="v:skipWhile" class="def">skipWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> () <a href="src/Data-Attoparsec-ByteString-Char8.html#skipWhile" class="link">Source</a></p><div class="doc"><p>Skip past input for as long as the predicate returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:True">True</a></code>.</p></div></div><div class="top"><p class="src"><a name="v:take" class="def">take</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Internal.html#take" class="link">Source</a></p><div class="doc"><p>Consume exactly <code>n</code> bytes of input.</p></div></div><div class="top"><p class="src"><a name="v:scan" class="def">scan</a> :: s -> (s -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#t:Maybe">Maybe</a> s) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#scan" class="link">Source</a></p><div class="doc"><p>A stateful scanner. The predicate consumes and transforms a
state argument, and each transformed state is passed to successive
invocations of the predicate on each byte of the input until one
returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#v:Nothing">Nothing</a></code> or the input ends.</p><p>This parser does not fail. It will return an empty string if the
predicate returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Maybe.html#v:Nothing">Nothing</a></code> on the first byte of input.</p><p><em>Note</em>: Because this parser does not fail, do not use it with
combinators such as <code>many</code>, because such parsers loop until a
failure occurs. Careless use will thus result in an infinite loop.</p></div></div><div class="top"><p class="src"><a name="v:takeWhile" class="def">takeWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#takeWhile" class="link">Source</a></p><div class="doc"><p>Consume input as long as the predicate returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:True">True</a></code>, and return
the consumed input.</p><p>This parser does not fail. It will return an empty string if the
predicate returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:False">False</a></code> on the first byte of input.</p><p><em>Note</em>: Because this parser does not fail, do not use it with
combinators such as <code>many</code>, because such parsers loop until a
failure occurs. Careless use will thus result in an infinite loop.</p></div></div><div class="top"><p class="src"><a name="v:takeWhile1" class="def">takeWhile1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#takeWhile1" class="link">Source</a></p><div class="doc"><p>Consume input as long as the predicate returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:True">True</a></code>, and return
the consumed input.</p><p>This parser requires the predicate to succeed on at least one byte
of input: it will fail if the predicate never returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:True">True</a></code> or if
there is no input left.</p></div></div><div class="top"><p class="src"><a name="v:takeTill" class="def">takeTill</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Char.html#t:Char">Char</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a>) -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#takeTill" class="link">Source</a></p><div class="doc"><p>Consume input as long as the predicate returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:False">False</a></code>
(i.e. until it returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:True">True</a></code>), and return the consumed input.</p><p>This parser does not fail. It will return an empty string if the
predicate returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#v:True">True</a></code> on the first byte of input.</p><p><em>Note</em>: Because this parser does not fail, do not use it with
combinators such as <code>many</code>, because such parsers loop until a
failure occurs. Careless use will thus result in an infinite loop.</p></div></div><h2 id="g:11">String combinators</h2><div class="doc"><p>If you enable the <code>OverloadedStrings</code> language extension, you can
use the <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-42--62-">*></a></code> and <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-60--42-"><*</a></code> combinators to simplify the common task of
matching a statically known string, then immediately parsing
something else.</p><p>Instead of writing something like this:</p><pre><code><a href="Data-Attoparsec-ByteString-Char8.html#v:string">string</a></code> "foo" <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-42--62-">*></a></code> wibble
</pre><p>Using <code>OverloadedStrings</code>, you can omit the explicit use of
<code><a href="Data-Attoparsec-ByteString-Char8.html#v:string">string</a></code>, and write a more compact version:</p><pre>"foo" <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-42--62-">*></a></code> wibble
</pre><p>(Note: the <code><a href="Data-Attoparsec-ByteString-Char8.html#v:.-42--62-">.*></a></code> and <code><a href="Data-Attoparsec-ByteString-Char8.html#v:-60--42-."><*.</a></code> combinators that were originally
provided for this purpose are obsolete and unnecessary, and will be
removed in the next major version.)</p></div><div class="top"><p class="src"><a name="v:.-42--62-" class="def">(.*>)</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a <a href="src/Data-Attoparsec-ByteString-Char8.html#.%2A%3E" class="link">Source</a></p><div class="doc"><div class="warning"><p>Deprecated: This is no longer necessary, and will be removed. Use <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-42--62-">*></a></code> instead.</p></div><p><em>Obsolete</em>. A type-specialized version of <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-42--62-">*></a></code> for
<code><a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></code>. Use <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-42--62-">*></a></code> instead.</p></div></div><div class="top"><p class="src"><a name="v:-60--42-." class="def">(<*.)</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a <a href="src/Data-Attoparsec-ByteString-Char8.html#%3C%2A." class="link">Source</a></p><div class="doc"><div class="warning"><p>Deprecated: This is no longer necessary, and will be removed. Use <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-60--42-"><*</a></code> instead.</p></div><p><em>Obsolete</em>. A type-specialized version of <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-60--42-"><*</a></code> for
<code><a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a></code>. Use <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#v:-60--42-"><*</a></code> instead.</p></div></div><h2 id="g:12">Consume all remaining input</h2><div class="top"><p class="src"><a name="v:takeByteString" class="def">takeByteString</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Internal.html#takeByteString" class="link">Source</a></p><div class="doc"><p>Consume all remaining input and return it as a single string.</p></div></div><div class="top"><p class="src"><a name="v:takeLazyByteString" class="def">takeLazyByteString</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString-Lazy.html#t:ByteString">ByteString</a> <a href="src/Data-Attoparsec-ByteString-Internal.html#takeLazyByteString" class="link">Source</a></p><div class="doc"><p>Consume all remaining input and return it as a single string.</p></div></div><h1 id="g:13">Text parsing</h1><div class="top"><p class="src"><a name="v:endOfLine" class="def">endOfLine</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> () <a href="src/Data-Attoparsec-ByteString-Internal.html#endOfLine" class="link">Source</a></p><div class="doc"><p>Match either a single newline character <code>'\n'</code>, or a carriage
return followed by a newline character <code>"\r\n"</code>.</p></div></div><div class="top"><p class="src"><a name="v:isEndOfLine" class="def">isEndOfLine</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isEndOfLine" class="link">Source</a></p><div class="doc"><p>A predicate that matches either a carriage return <code>'\r'</code> or
newline <code>'\n'</code> character.</p></div></div><div class="top"><p class="src"><a name="v:isHorizontalSpace" class="def">isHorizontalSpace</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Word.html#t:Word8">Word8</a> -> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#isHorizontalSpace" class="link">Source</a></p><div class="doc"><p>A predicate that matches either a space <code>' '</code> or horizontal tab
<code>'\t'</code> character.</p></div></div><h1 id="g:14">Numeric parsers</h1><div class="top"><p class="src"><a name="v:decimal" class="def">decimal</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Integral">Integral</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a <a href="src/Data-Attoparsec-ByteString-Char8.html#decimal" class="link">Source</a></p><div class="doc"><p>Parse and decode an unsigned decimal number.</p></div></div><div class="top"><p class="src"><a name="v:hexadecimal" class="def">hexadecimal</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Integral">Integral</a> a, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bits.html#t:Bits">Bits</a> a) => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a <a href="src/Data-Attoparsec-ByteString-Char8.html#hexadecimal" class="link">Source</a></p><div class="doc"><p>Parse and decode an unsigned hexadecimal number. The hex digits
<code>'a'</code> through <code>'f'</code> may be upper or lower case.</p><p>This parser does not accept a leading <code>"0x"</code> string.</p></div></div><div class="top"><p class="src"><a name="v:signed" class="def">signed</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Num">Num</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a <a href="src/Data-Attoparsec-ByteString-Char8.html#signed" class="link">Source</a></p><div class="doc"><p>Parse a number with an optional leading <code>'+'</code> or <code>'-'</code> sign
character.</p></div></div><div class="top"><p class="src"><a name="v:double" class="def">double</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Double">Double</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#double" class="link">Source</a></p><div class="doc"><p>Parse a rational number.</p><p>This parser accepts an optional leading sign character, followed by
at least one decimal digit. The syntax similar to that accepted by
the <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Read.html#v:read">read</a></code> function, with the exception that a trailing <code>'.'</code> or
<code>'e'</code> <em>not</em> followed by a number is not consumed.</p><p>Examples with behaviour identical to <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Read.html#v:read">read</a></code>, if you feed an empty
continuation to the first result:</p><pre>rational "3" == Done 3.0 ""
rational "3.1" == Done 3.1 ""
rational "3e4" == Done 30000.0 ""
rational "3.1e4" == Done 31000.0, ""</pre><p>Examples with behaviour identical to <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Read.html#v:read">read</a></code>:</p><pre>rational ".3" == Fail "input does not start with a digit"
rational "e3" == Fail "input does not start with a digit"</pre><p>Examples of differences from <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Read.html#v:read">read</a></code>:</p><pre>rational "3.foo" == Done 3.0 ".foo"
rational "3e" == Done 3.0 "e"</pre><p>This function does not accept string representations of "NaN" or
"Infinity".</p></div></div><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:Number" class="def">Number</a> <a href="src/Data-Attoparsec-Number.html#Number" class="link">Source</a></p><div class="doc"><p>A numeric type that can represent integers accurately, and
floating point numbers to the precision of a <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Double">Double</a></code>.</p><p><em>Note</em>: this type is deprecated, and will be removed in the next
major release. Use the <code><a href="file:///usr/share/doc/libghc-scientific-doc/html/Data-Scientific.html#v:Scientific">Scientific</a></code> type instead.</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:I" class="def">I</a> !<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Integer">Integer</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:D" class="def">D</a> !<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Double">Double</a></td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:Number" class="caption collapser" onclick="toggleSection('i:Number')">Instances</p><div id="section.i:Number" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-56" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Fractional">Fractional</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-109" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Data.html#t:Data">Data</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-36" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Num">Num</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-79" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Ord.html#t:Ord">Ord</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-63" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Real">Real</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-104" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:RealFrac">RealFrac</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-121" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Text-Show.html#t:Show">Show</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-39" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="file:///usr/share/doc/ghc-doc/html/libraries/deepseq-1.4.1.1/Control-DeepSeq.html#t:NFData">NFData</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a></span> <a href="src/Data-Attoparsec-Number.html#line-43" class="link">Source</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:number" class="def">number</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="Data-Attoparsec-ByteString-Char8.html#t:Number">Number</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#number" class="link">Source</a></p><div class="doc"><div class="warning"><p>Deprecated: Use <code><a href="Data-Attoparsec-ByteString-Char8.html#v:scientific">scientific</a></code> instead.</p></div><p>Parse a number, attempting to preserve both speed and precision.</p><p>The syntax accepted by this parser is the same as for <code><a href="Data-Attoparsec-ByteString-Char8.html#v:double">double</a></code>.</p></div></div><div class="top"><p class="src"><a name="v:rational" class="def">rational</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Fractional">Fractional</a> a => <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a <a href="src/Data-Attoparsec-ByteString-Char8.html#rational" class="link">Source</a></p><div class="doc"><p>Parse a rational number.</p><p>The syntax accepted by this parser is the same as for <code><a href="Data-Attoparsec-ByteString-Char8.html#v:double">double</a></code>.</p><p><em>Note</em>: this parser is not safe for use with inputs from untrusted
sources. An input with a suitably large exponent such as
<code>"1e1000000000"</code> will cause a huge <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Prelude.html#t:Integer">Integer</a></code> to be allocated,
resulting in what is effectively a denial-of-service attack.</p><p>In most cases, it is better to use <code><a href="Data-Attoparsec-ByteString-Char8.html#v:double">double</a></code> or <code><a href="Data-Attoparsec-ByteString-Char8.html#v:scientific">scientific</a></code>
instead.</p></div></div><div class="top"><p class="src"><a name="v:scientific" class="def">scientific</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> <a href="file:///usr/share/doc/libghc-scientific-doc/html/Data-Scientific.html#t:Scientific">Scientific</a> <a href="src/Data-Attoparsec-ByteString-Char8.html#scientific" class="link">Source</a></p><div class="doc"><p>Parse a scientific number.</p><p>The syntax accepted by this parser is the same as for <code><a href="Data-Attoparsec-ByteString-Char8.html#v:double">double</a></code>.</p></div></div><h1 id="g:15">Combinators</h1><div class="top"><p class="src"><a name="v:try" class="def">try</a> :: <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a -> <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a <a href="src/Data-Attoparsec-Combinator.html#try" class="link">Source</a></p><div class="doc"><p>Attempt a parse, and if it fails, rewind the input so that no
input appears to have been consumed.</p><p>This combinator is provided for compatibility with Parsec.
attoparsec parsers always backtrack on failure.</p></div></div><div class="top"><p class="src"><a name="v:-60--63--62-" class="def">(<?>)</a> <span class="fixity">infix 0</span><span class="rightedge"></span> <a href="src/Data-Attoparsec-Combinator.html#%3C%3F%3E" class="link">Source</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a</td><td class="doc empty"> </td></tr><tr><td class="src">-> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-String.html#t:String">String</a></td><td class="doc"><p>the name to use if parsing fails</p></td></tr><tr><td class="src">-> <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> i a</td><td class="doc empty"> </td></tr></table></div><div class="doc"><p>Name the parser, in case failure occurs.</p></div></div><div class="top"><p class="src"><a name="v:choice" class="def">choice</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => [f a] -> f a <a href="src/Data-Attoparsec-Combinator.html#choice" class="link">Source</a></p><div class="doc"><p><code>choice ps</code> tries to apply the actions in the list <code>ps</code> in order,
until one of them succeeds. Returns the value of the succeeding
action.</p></div></div><div class="top"><p class="src"><a name="v:count" class="def">count</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:Monad">Monad</a> m => <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a> -> m a -> m [a] <a href="src/Data-Attoparsec-Combinator.html#count" class="link">Source</a></p><div class="doc"><p>Apply the given action repeatedly, returning every result.</p></div></div><div class="top"><p class="src"><a name="v:option" class="def">option</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => a -> f a -> f a <a href="src/Data-Attoparsec-Combinator.html#option" class="link">Source</a></p><div class="doc"><p><code>option x p</code> tries to apply action <code>p</code>. If <code>p</code> fails without
consuming input, it returns the value <code>x</code>, otherwise the value
returned by <code>p</code>.</p><pre>priority = option 0 (digitToInt <$> digit)</pre></div></div><div class="top"><p class="src"><a name="v:many-39-" class="def">many'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m [a] <a href="src/Data-Attoparsec-Combinator.html#many%27" class="link">Source</a></p><div class="doc"><p><code>many' p</code> applies the action <code>p</code> <em>zero</em> or more times. Returns a
list of the returned values of <code>p</code>. The value returned by <code>p</code> is
forced to WHNF.</p><pre> word = many' letter</pre></div></div><div class="top"><p class="src"><a name="v:many1" class="def">many1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f [a] <a href="src/Data-Attoparsec-Combinator.html#many1" class="link">Source</a></p><div class="doc"><p><code>many1 p</code> applies the action <code>p</code> <em>one</em> or more times. Returns a
list of the returned values of <code>p</code>.</p><pre> word = many1 letter</pre></div></div><div class="top"><p class="src"><a name="v:many1-39-" class="def">many1'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m [a] <a href="src/Data-Attoparsec-Combinator.html#many1%27" class="link">Source</a></p><div class="doc"><p><code>many1' p</code> applies the action <code>p</code> <em>one</em> or more times. Returns a
list of the returned values of <code>p</code>. The value returned by <code>p</code> is
forced to WHNF.</p><pre> word = many1' letter</pre></div></div><div class="top"><p class="src"><a name="v:manyTill" class="def">manyTill</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f b -> f [a] <a href="src/Data-Attoparsec-Combinator.html#manyTill" class="link">Source</a></p><div class="doc"><p><code>manyTill p end</code> applies action <code>p</code> <em>zero</em> or more times until
action <code>end</code> succeeds, and returns the list of values returned by
<code>p</code>. This can be used to scan comments:</p><pre> simpleComment = string "<!--" *> manyTill anyChar (string "-->")</pre><p>(Note the overlapping parsers <code>anyChar</code> and <code>string "-->"</code>.
While this will work, it is not very efficient, as it will cause a
lot of backtracking.)</p></div></div><div class="top"><p class="src"><a name="v:manyTill-39-" class="def">manyTill'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m b -> m [a] <a href="src/Data-Attoparsec-Combinator.html#manyTill%27" class="link">Source</a></p><div class="doc"><p><code>manyTill' p end</code> applies action <code>p</code> <em>zero</em> or more times until
action <code>end</code> succeeds, and returns the list of values returned by
<code>p</code>. This can be used to scan comments:</p><pre> simpleComment = string "<!--" *> manyTill' anyChar (string "-->")</pre><p>(Note the overlapping parsers <code>anyChar</code> and <code>string "-->"</code>.
While this will work, it is not very efficient, as it will cause a
lot of backtracking.)</p><p>The value returned by <code>p</code> is forced to WHNF.</p></div></div><div class="top"><p class="src"><a name="v:sepBy" class="def">sepBy</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f s -> f [a] <a href="src/Data-Attoparsec-Combinator.html#sepBy" class="link">Source</a></p><div class="doc"><p><code>sepBy p sep</code> applies <em>zero</em> or more occurrences of <code>p</code>, separated
by <code>sep</code>. Returns a list of the values returned by <code>p</code>.</p><pre>commaSep p = p `sepBy` (char ',')</pre></div></div><div class="top"><p class="src"><a name="v:sepBy-39-" class="def">sepBy'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m s -> m [a] <a href="src/Data-Attoparsec-Combinator.html#sepBy%27" class="link">Source</a></p><div class="doc"><p><code>sepBy' p sep</code> applies <em>zero</em> or more occurrences of <code>p</code>, separated
by <code>sep</code>. Returns a list of the values returned by <code>p</code>. The value
returned by <code>p</code> is forced to WHNF.</p><pre>commaSep p = p `sepBy'` (char ',')</pre></div></div><div class="top"><p class="src"><a name="v:sepBy1" class="def">sepBy1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f s -> f [a] <a href="src/Data-Attoparsec-Combinator.html#sepBy1" class="link">Source</a></p><div class="doc"><p><code>sepBy1 p sep</code> applies <em>one</em> or more occurrences of <code>p</code>, separated
by <code>sep</code>. Returns a list of the values returned by <code>p</code>.</p><pre>commaSep p = p `sepBy1` (char ',')</pre></div></div><div class="top"><p class="src"><a name="v:sepBy1-39-" class="def">sepBy1'</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m => m a -> m s -> m [a] <a href="src/Data-Attoparsec-Combinator.html#sepBy1%27" class="link">Source</a></p><div class="doc"><p><code>sepBy1' p sep</code> applies <em>one</em> or more occurrences of <code>p</code>, separated
by <code>sep</code>. Returns a list of the values returned by <code>p</code>. The value
returned by <code>p</code> is forced to WHNF.</p><pre>commaSep p = p `sepBy1'` (char ',')</pre></div></div><div class="top"><p class="src"><a name="v:skipMany" class="def">skipMany</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f () <a href="src/Data-Attoparsec-Combinator.html#skipMany" class="link">Source</a></p><div class="doc"><p>Skip zero or more instances of an action.</p></div></div><div class="top"><p class="src"><a name="v:skipMany1" class="def">skipMany1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f () <a href="src/Data-Attoparsec-Combinator.html#skipMany1" class="link">Source</a></p><div class="doc"><p>Skip one or more instances of an action.</p></div></div><div class="top"><p class="src"><a name="v:eitherP" class="def">eitherP</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Applicative.html#t:Alternative">Alternative</a> f => f a -> f b -> f (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Either.html#t:Either">Either</a> a b) <a href="src/Data-Attoparsec-Combinator.html#eitherP" class="link">Source</a></p><div class="doc"><p>Combine two alternatives.</p></div></div><div class="top"><p class="src"><a name="v:match" class="def">match</a> :: <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> a -> <a href="Data-Attoparsec-ByteString-Char8.html#t:Parser">Parser</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/bytestring-0.10.6.0/Data-ByteString.html#t:ByteString">ByteString</a>, a) <a href="src/Data-Attoparsec-ByteString-Internal.html#match" class="link">Source</a></p><div class="doc"><p>Return both the result of a parse and the portion of the input
that was consumed while it was being parsed.</p></div></div><h1 id="g:16">State observation and manipulation functions</h1><div class="top"><p class="src"><a name="v:endOfInput" class="def">endOfInput</a> :: <span class="keyword">forall</span> t. <a href="Data-Attoparsec-Internal-Types.html#t:Chunk">Chunk</a> t => <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> t () <a href="src/Data-Attoparsec-Internal.html#endOfInput" class="link">Source</a></p><div class="doc"><p>Match only if all input has been consumed.</p></div></div><div class="top"><p class="src"><a name="v:atEnd" class="def">atEnd</a> :: <a href="Data-Attoparsec-Internal-Types.html#t:Chunk">Chunk</a> t => <a href="Data-Attoparsec-Internal-Types.html#t:Parser">Parser</a> t <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Attoparsec-Internal.html#atEnd" class="link">Source</a></p><div class="doc"><p>Return an indication of whether the end of input has been
reached.</p></div></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.16.1</p></div></body></html>
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