<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ -->
<title>src/Haddock/Interface/ParseModuleHeader.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a>
<a name="line-2"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : Haddock.Interface.ParseModuleHeader</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Simon Marlow 2006, Isaac Dupree 2009</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-like</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : haddock@projects.haskell.org</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-11"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-12"></a>
<a name="line-13"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Haddock</span><span class='hs-varop'>.</span><span class='hs-conid'>Interface</span><span class='hs-varop'>.</span><span class='hs-conid'>ParseModuleHeader</span> <span class='hs-layout'>(</span><span class='hs-varid'>parseModuleHeader</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Haddock</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Haddock</span><span class='hs-varop'>.</span><span class='hs-conid'>Lex</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Haddock</span><span class='hs-varop'>.</span><span class='hs-conid'>Parse</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>RdrName</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-24"></a><span class='hs-comment'>-- Parsing module headers</span>
<a name="line-25"></a>
<a name="line-26"></a><a name="parseModuleHeader"></a><span class='hs-comment'>-- NB. The headers must be given in the order Module, Description,</span>
<a name="line-27"></a><span class='hs-comment'>-- Copyright, License, Maintainer, Stability, Portability, except that</span>
<a name="line-28"></a><span class='hs-comment'>-- any or all may be omitted.</span>
<a name="line-29"></a><span class='hs-definition'>parseModuleHeader</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-conid'>HaddockModInfo</span> <span class='hs-conid'>RdrName</span><span class='hs-layout'>,</span> <span class='hs-conid'>Doc</span> <span class='hs-conid'>RdrName</span><span class='hs-layout'>)</span>
<a name="line-30"></a><span class='hs-definition'>parseModuleHeader</span> <span class='hs-varid'>str0</span> <span class='hs-keyglyph'>=</span>
<a name="line-31"></a> <span class='hs-keyword'>let</span>
<a name="line-32"></a> <span class='hs-varid'>getKey</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-33"></a> <span class='hs-varid'>getKey</span> <span class='hs-varid'>key</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>parseKey</span> <span class='hs-varid'>key</span> <span class='hs-varid'>str</span> <span class='hs-keyword'>of</span>
<a name="line-34"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span><span class='hs-varid'>str</span><span class='hs-layout'>)</span>
<a name="line-35"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span><span class='hs-layout'>,</span><span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>value</span><span class='hs-layout'>,</span><span class='hs-varid'>rest</span><span class='hs-layout'>)</span>
<a name="line-36"></a>
<a name="line-37"></a> <span class='hs-layout'>(</span><span class='hs-sel'>_moduleOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"Module"</span> <span class='hs-varid'>str0</span>
<a name="line-38"></a> <span class='hs-layout'>(</span><span class='hs-varid'>descriptionOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"Description"</span> <span class='hs-varid'>str1</span>
<a name="line-39"></a> <span class='hs-layout'>(</span><span class='hs-sel'>_copyrightOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"Copyright"</span> <span class='hs-varid'>str2</span>
<a name="line-40"></a> <span class='hs-layout'>(</span><span class='hs-sel'>_licenseOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"License"</span> <span class='hs-varid'>str3</span>
<a name="line-41"></a> <span class='hs-layout'>(</span><span class='hs-sel'>_licenceOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str5</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"Licence"</span> <span class='hs-varid'>str4</span>
<a name="line-42"></a> <span class='hs-layout'>(</span><span class='hs-varid'>maintainerOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str6</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"Maintainer"</span> <span class='hs-varid'>str5</span>
<a name="line-43"></a> <span class='hs-layout'>(</span><span class='hs-varid'>stabilityOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str7</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"Stability"</span> <span class='hs-varid'>str6</span>
<a name="line-44"></a> <span class='hs-layout'>(</span><span class='hs-varid'>portabilityOpt</span><span class='hs-layout'>,</span><span class='hs-varid'>str8</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getKey</span> <span class='hs-str'>"Portability"</span> <span class='hs-varid'>str7</span>
<a name="line-45"></a>
<a name="line-46"></a> <span class='hs-varid'>description1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Doc</span> <span class='hs-conid'>RdrName</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-47"></a> <span class='hs-varid'>description1</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>descriptionOpt</span> <span class='hs-keyword'>of</span>
<a name="line-48"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-conid'>Nothing</span>
<a name="line-49"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>description</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>parseString</span> <span class='hs-varop'>.</span> <span class='hs-varid'>tokenise</span> <span class='hs-varop'>$</span> <span class='hs-varid'>description</span> <span class='hs-keyword'>of</span>
<a name="line-50"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-layout'>(</span><span class='hs-str'>"Cannot parse Description: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>description</span><span class='hs-layout'>)</span>
<a name="line-51"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>doc</span><span class='hs-layout'>)</span>
<a name="line-52"></a> <span class='hs-keyword'>in</span>
<a name="line-53"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>description1</span> <span class='hs-keyword'>of</span>
<a name="line-54"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>mess</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-varid'>mess</span>
<a name="line-55"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>docOpt</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>parseParas</span> <span class='hs-varop'>.</span> <span class='hs-varid'>tokenise</span> <span class='hs-varop'>$</span> <span class='hs-varid'>str8</span> <span class='hs-keyword'>of</span>
<a name="line-56"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-str'>"Cannot parse header documentation paragraphs"</span>
<a name="line-57"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-layout'>(</span><span class='hs-conid'>HaddockModInfo</span> <span class='hs-layout'>{</span>
<a name="line-58"></a> <span class='hs-varid'>hmi_description</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>docOpt</span><span class='hs-layout'>,</span>
<a name="line-59"></a> <span class='hs-varid'>hmi_portability</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>portabilityOpt</span><span class='hs-layout'>,</span>
<a name="line-60"></a> <span class='hs-varid'>hmi_stability</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>stabilityOpt</span><span class='hs-layout'>,</span>
<a name="line-61"></a> <span class='hs-varid'>hmi_maintainer</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maintainerOpt</span>
<a name="line-62"></a> <span class='hs-layout'>}</span><span class='hs-layout'>,</span> <span class='hs-varid'>doc</span><span class='hs-layout'>)</span>
<a name="line-63"></a>
<a name="line-64"></a><a name="parseKey"></a><span class='hs-comment'>-- | This function is how we read keys.</span>
<a name="line-65"></a><span class='hs-comment'>--</span>
<a name="line-66"></a><span class='hs-comment'>-- all fields in the header are optional and have the form</span>
<a name="line-67"></a><span class='hs-comment'>--</span>
<a name="line-68"></a><span class='hs-comment'>-- [spaces1][field name][spaces] ":"</span>
<a name="line-69"></a><span class='hs-comment'>-- [text]"\n" ([spaces2][space][text]"\n" | [spaces]"\n")*</span>
<a name="line-70"></a><span class='hs-comment'>-- where each [spaces2] should have [spaces1] as a prefix.</span>
<a name="line-71"></a><span class='hs-comment'>--</span>
<a name="line-72"></a><span class='hs-comment'>-- Thus for the key "Description",</span>
<a name="line-73"></a><span class='hs-comment'>--</span>
<a name="line-74"></a><span class='hs-comment'>-- > Description : this is a</span>
<a name="line-75"></a><span class='hs-comment'>-- > rather long</span>
<a name="line-76"></a><span class='hs-comment'>-- ></span>
<a name="line-77"></a><span class='hs-comment'>-- > description</span>
<a name="line-78"></a><span class='hs-comment'>-- ></span>
<a name="line-79"></a><span class='hs-comment'>-- > The module comment starts here</span>
<a name="line-80"></a><span class='hs-comment'>--</span>
<a name="line-81"></a><span class='hs-comment'>-- the value will be "this is a .. description" and the rest will begin</span>
<a name="line-82"></a><span class='hs-comment'>-- at "The module comment".</span>
<a name="line-83"></a><span class='hs-definition'>parseKey</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-84"></a><span class='hs-definition'>parseKey</span> <span class='hs-varid'>key</span> <span class='hs-varid'>toParse0</span> <span class='hs-keyglyph'>=</span>
<a name="line-85"></a> <span class='hs-keyword'>do</span>
<a name="line-86"></a> <span class='hs-keyword'>let</span>
<a name="line-87"></a> <span class='hs-layout'>(</span><span class='hs-varid'>spaces0</span><span class='hs-layout'>,</span><span class='hs-varid'>toParse1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-varid'>toParse0</span>
<a name="line-88"></a>
<a name="line-89"></a> <span class='hs-varid'>indentation</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>spaces0</span>
<a name="line-90"></a> <span class='hs-varid'>afterKey0</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>extractPrefix</span> <span class='hs-varid'>key</span> <span class='hs-varid'>toParse1</span>
<a name="line-91"></a> <span class='hs-keyword'>let</span>
<a name="line-92"></a> <span class='hs-varid'>afterKey1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-varid'>afterKey0</span>
<a name="line-93"></a> <span class='hs-varid'>afterColon0</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>afterKey1</span> <span class='hs-keyword'>of</span>
<a name="line-94"></a> <span class='hs-chr'>':'</span><span class='hs-conop'>:</span><span class='hs-varid'>afterColon</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>afterColon</span>
<a name="line-95"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-96"></a> <span class='hs-keyword'>let</span>
<a name="line-97"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>afterColon1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-varid'>afterColon0</span>
<a name="line-98"></a>
<a name="line-99"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>scanKey</span> <span class='hs-conid'>True</span> <span class='hs-varid'>indentation</span> <span class='hs-varid'>afterColon1</span><span class='hs-layout'>)</span>
<a name="line-100"></a> <span class='hs-keyword'>where</span>
<a name="line-101"></a> <span class='hs-varid'>scanKey</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-102"></a> <span class='hs-varid'>scanKey</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span><span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-103"></a> <span class='hs-varid'>scanKey</span> <span class='hs-varid'>isFirst</span> <span class='hs-varid'>indentation</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span>
<a name="line-104"></a> <span class='hs-keyword'>let</span>
<a name="line-105"></a> <span class='hs-layout'>(</span><span class='hs-varid'>nextLine</span><span class='hs-layout'>,</span><span class='hs-varid'>rest1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractNextLine</span> <span class='hs-varid'>str</span>
<a name="line-106"></a>
<a name="line-107"></a> <span class='hs-varid'>accept</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isFirst</span> <span class='hs-varop'>||</span> <span class='hs-varid'>sufficientIndentation</span> <span class='hs-varop'>||</span> <span class='hs-varid'>allSpaces</span>
<a name="line-108"></a>
<a name="line-109"></a> <span class='hs-varid'>sufficientIndentation</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>extractPrefix</span> <span class='hs-varid'>indentation</span> <span class='hs-varid'>nextLine</span> <span class='hs-keyword'>of</span>
<a name="line-110"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isSpace</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-111"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span>
<a name="line-112"></a>
<a name="line-113"></a> <span class='hs-varid'>allSpaces</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-varid'>nextLine</span> <span class='hs-keyword'>of</span>
<a name="line-114"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-115"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span>
<a name="line-116"></a> <span class='hs-keyword'>in</span>
<a name="line-117"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>accept</span>
<a name="line-118"></a> <span class='hs-keyword'>then</span>
<a name="line-119"></a> <span class='hs-keyword'>let</span>
<a name="line-120"></a> <span class='hs-layout'>(</span><span class='hs-varid'>scanned1</span><span class='hs-layout'>,</span><span class='hs-varid'>rest2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>scanKey</span> <span class='hs-conid'>False</span> <span class='hs-varid'>indentation</span> <span class='hs-varid'>rest1</span>
<a name="line-121"></a>
<a name="line-122"></a> <span class='hs-varid'>scanned2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>scanned1</span> <span class='hs-keyword'>of</span>
<a name="line-123"></a> <span class='hs-str'>""</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>allSpaces</span> <span class='hs-keyword'>then</span> <span class='hs-str'>""</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>nextLine</span>
<a name="line-124"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>nextLine</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>scanned1</span>
<a name="line-125"></a> <span class='hs-keyword'>in</span>
<a name="line-126"></a> <span class='hs-layout'>(</span><span class='hs-varid'>scanned2</span><span class='hs-layout'>,</span><span class='hs-varid'>rest2</span><span class='hs-layout'>)</span>
<a name="line-127"></a> <span class='hs-keyword'>else</span>
<a name="line-128"></a> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span><span class='hs-varid'>str</span><span class='hs-layout'>)</span>
<a name="line-129"></a>
<a name="line-130"></a> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-131"></a> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span><span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-132"></a> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>cs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-133"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isSpace</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span>
<a name="line-134"></a> <span class='hs-keyword'>let</span>
<a name="line-135"></a> <span class='hs-layout'>(</span><span class='hs-varid'>spaces1</span><span class='hs-layout'>,</span><span class='hs-varid'>cs1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractLeadingSpaces</span> <span class='hs-varid'>cs</span>
<a name="line-136"></a> <span class='hs-keyword'>in</span>
<a name="line-137"></a> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>spaces1</span><span class='hs-layout'>,</span><span class='hs-varid'>cs1</span><span class='hs-layout'>)</span>
<a name="line-138"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-139"></a>
<a name="line-140"></a> <span class='hs-varid'>extractNextLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-141"></a> <span class='hs-varid'>extractNextLine</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span><span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-142"></a> <span class='hs-varid'>extractNextLine</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>cs</span><span class='hs-layout'>)</span>
<a name="line-143"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\n'</span> <span class='hs-keyglyph'>=</span>
<a name="line-144"></a> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span><span class='hs-varid'>cs</span><span class='hs-layout'>)</span>
<a name="line-145"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>=</span>
<a name="line-146"></a> <span class='hs-keyword'>let</span>
<a name="line-147"></a> <span class='hs-layout'>(</span><span class='hs-varid'>line</span><span class='hs-layout'>,</span><span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractNextLine</span> <span class='hs-varid'>cs</span>
<a name="line-148"></a> <span class='hs-keyword'>in</span>
<a name="line-149"></a> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>line</span><span class='hs-layout'>,</span><span class='hs-varid'>rest</span><span class='hs-layout'>)</span>
<a name="line-150"></a>
<a name="line-151"></a> <span class='hs-comment'>-- comparison is case-insensitive.</span>
<a name="line-152"></a> <span class='hs-varid'>extractPrefix</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>String</span>
<a name="line-153"></a> <span class='hs-varid'>extractPrefix</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>s</span>
<a name="line-154"></a> <span class='hs-varid'>extractPrefix</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-155"></a> <span class='hs-varid'>extractPrefix</span> <span class='hs-layout'>(</span><span class='hs-varid'>c1</span><span class='hs-conop'>:</span><span class='hs-varid'>cs1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>c2</span><span class='hs-conop'>:</span><span class='hs-varid'>cs2</span><span class='hs-layout'>)</span>
<a name="line-156"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>toUpper</span> <span class='hs-varid'>c1</span> <span class='hs-varop'>==</span> <span class='hs-varid'>toUpper</span> <span class='hs-varid'>c2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extractPrefix</span> <span class='hs-varid'>cs1</span> <span class='hs-varid'>cs2</span>
<a name="line-157"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-158"></a>
</pre></body>
</html>
distrib
>
Fedora
>
14
>
x86_64
>
media
>
updates
>
by-pkgid
>
33ad064c4b642ed30353356a1d094330
>
files
>
96
