<?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/Apply.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-keyword'>module</span> <span class='hs-conid'>Apply</span><span class='hs-layout'>(</span><span class='hs-varid'>applyHint</span><span class='hs-layout'>,</span> <span class='hs-varid'>applyHintStr</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HSE</span><span class='hs-varop'>.</span><span class='hs-conid'>All</span>
<a name="line-5"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Hint</span><span class='hs-varop'>.</span><span class='hs-conid'>All</span>
<a name="line-6"></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-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Ord</span>
<a name="line-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Settings</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Idea</span>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Util</span>
<a name="line-13"></a>
<a name="line-14"></a>
<a name="line-15"></a><a name="applyHint"></a><span class='hs-definition'>applyHint</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseFlags</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Setting</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Idea</span><span class='hs-keyglyph'>]</span>
<a name="line-16"></a><span class='hs-definition'>applyHint</span> <span class='hs-varid'>flags</span> <span class='hs-varid'>s</span> <span class='hs-varid'>file</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-17"></a> <span class='hs-varid'>src</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readFileEncoding</span> <span class='hs-layout'>(</span><span class='hs-varid'>encoding</span> <span class='hs-varid'>flags</span><span class='hs-layout'>)</span> <span class='hs-varid'>file</span>
<a name="line-18"></a> <span class='hs-varid'>applyHintStr</span> <span class='hs-varid'>flags</span> <span class='hs-varid'>s</span> <span class='hs-varid'>file</span> <span class='hs-varid'>src</span>
<a name="line-19"></a>
<a name="line-20"></a>
<a name="line-21"></a><a name="applyHintStr"></a><span class='hs-definition'>applyHintStr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseFlags</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Setting</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Idea</span><span class='hs-keyglyph'>]</span>
<a name="line-22"></a><span class='hs-definition'>applyHintStr</span> <span class='hs-varid'>flags</span> <span class='hs-varid'>s</span> <span class='hs-varid'>file</span> <span class='hs-varid'>src</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-23"></a> <span class='hs-varid'>res</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>parseString</span> <span class='hs-varid'>flags</span><span class='hs-layout'>{</span><span class='hs-varid'>infixes</span><span class='hs-keyglyph'>=</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Infix</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>}</span> <span class='hs-varid'>file</span> <span class='hs-varid'>src</span>
<a name="line-24"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>res</span> <span class='hs-keyword'>of</span>
<a name="line-25"></a> <span class='hs-conid'>ParseFailed</span> <span class='hs-varid'>sl</span> <span class='hs-varid'>msg</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>length</span> <span class='hs-varid'>src</span> <span class='hs-varop'>`seq`</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>classify</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>parseFailed</span> <span class='hs-varid'>flags</span> <span class='hs-varid'>sl</span> <span class='hs-varid'>msg</span> <span class='hs-varid'>src</span>
<a name="line-26"></a> <span class='hs-conid'>ParseOk</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-27"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>settings</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapMaybe</span> <span class='hs-varid'>readPragma</span> <span class='hs-varop'>$</span> <span class='hs-varid'>moduleDecls</span> <span class='hs-varid'>m</span>
<a name="line-28"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>classify</span> <span class='hs-varop'>$</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-varid'>settings</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>parseOk</span> <span class='hs-layout'>(</span><span class='hs-varid'>allHints</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-29"></a>
<a name="line-30"></a>
<a name="line-31"></a><a name="parseFailed"></a><span class='hs-definition'>parseFailed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseFlags</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcLoc</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'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Idea</span><span class='hs-keyglyph'>]</span>
<a name="line-32"></a><span class='hs-definition'>parseFailed</span> <span class='hs-varid'>flags</span> <span class='hs-varid'>sl</span> <span class='hs-varid'>msg</span> <span class='hs-varid'>src</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-33"></a> <span class='hs-comment'>-- figure out the best line number to grab context from, by reparsing</span>
<a name="line-34"></a> <span class='hs-layout'>(</span><span class='hs-varid'>str2</span><span class='hs-layout'>,</span><span class='hs-varid'>pr2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>parseString</span> <span class='hs-layout'>(</span><span class='hs-varid'>parseFlagsNoLocations</span> <span class='hs-varid'>flags</span><span class='hs-layout'>)</span> <span class='hs-str'>""</span> <span class='hs-varid'>src</span>
<a name="line-35"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ctxt</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>pr2</span> <span class='hs-keyword'>of</span>
<a name="line-36"></a> <span class='hs-conid'>ParseFailed</span> <span class='hs-varid'>sl2</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>context</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcLine</span> <span class='hs-varid'>sl2</span><span class='hs-layout'>)</span> <span class='hs-varid'>str2</span>
<a name="line-37"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>context</span> <span class='hs-layout'>(</span><span class='hs-varid'>srcLine</span> <span class='hs-varid'>sl</span><span class='hs-layout'>)</span> <span class='hs-varid'>src</span>
<a name="line-38"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ParseError</span> <span class='hs-conid'>Warning</span> <span class='hs-str'>"Parse error"</span> <span class='hs-varid'>sl</span> <span class='hs-varid'>msg</span> <span class='hs-varid'>ctxt</span><span class='hs-keyglyph'>]</span>
<a name="line-39"></a>
<a name="line-40"></a>
<a name="line-41"></a><a name="context"></a><span class='hs-definition'>context</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-42"></a><span class='hs-definition'>context</span> <span class='hs-varid'>lineNo</span> <span class='hs-varid'>src</span> <span class='hs-keyglyph'>=</span>
<a name="line-43"></a> <span class='hs-varid'>unlines</span> <span class='hs-varop'>$</span> <span class='hs-varid'>trimBy</span> <span class='hs-layout'>(</span><span class='hs-varid'>all</span> <span class='hs-varid'>isSpace</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-44"></a> <span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span><span class='hs-layout'>)</span> <span class='hs-varid'>ticks</span> <span class='hs-varop'>$</span> <span class='hs-varid'>take</span> <span class='hs-num'>5</span> <span class='hs-varop'>$</span> <span class='hs-varid'>drop</span> <span class='hs-layout'>(</span><span class='hs-varid'>lineNo</span> <span class='hs-comment'>-</span> <span class='hs-num'>3</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>src</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>""</span><span class='hs-keyglyph'>]</span>
<a name="line-45"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>ticks</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>" "</span><span class='hs-layout'>,</span><span class='hs-str'>" "</span><span class='hs-layout'>,</span><span class='hs-str'>"> "</span><span class='hs-layout'>,</span><span class='hs-str'>" "</span><span class='hs-layout'>,</span><span class='hs-str'>" "</span><span class='hs-keyglyph'>]</span>
<a name="line-46"></a>
<a name="line-47"></a>
<a name="line-48"></a><a name="parseOk"></a><span class='hs-definition'>parseOk</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Hint</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Module_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Idea</span><span class='hs-keyglyph'>]</span>
<a name="line-49"></a><span class='hs-definition'>parseOk</span> <span class='hs-varid'>h</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span>
<a name="line-50"></a> <span class='hs-varid'>order</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ModuHint</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>h</span><span class='hs-layout'>,</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>h</span> <span class='hs-varid'>nm</span> <span class='hs-varid'>m</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span>
<a name="line-51"></a> <span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>order</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromNamed</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>decHints</span><span class='hs-layout'>,</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>h</span> <span class='hs-varid'>d</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>moduleDecls</span> <span class='hs-varid'>m</span><span class='hs-keyglyph'>]</span>
<a name="line-52"></a> <span class='hs-keyword'>where</span>
<a name="line-53"></a> <span class='hs-varid'>decHints</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>h</span> <span class='hs-varid'>nm</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DeclHint</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>h</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- partially apply</span>
<a name="line-54"></a> <span class='hs-varid'>order</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span><span class='hs-layout'>{</span><span class='hs-varid'>func</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>moduleName</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span><span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sortBy</span> <span class='hs-layout'>(</span><span class='hs-varid'>comparing</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span>
<a name="line-55"></a> <span class='hs-varid'>nm</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>moduleScope</span> <span class='hs-varid'>m</span>
<a name="line-56"></a>
<a name="line-57"></a>
<a name="line-58"></a><a name="allHints"></a><span class='hs-definition'>allHints</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Setting</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Hint</span><span class='hs-keyglyph'>]</span>
<a name="line-59"></a><span class='hs-definition'>allHints</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dynamicHints</span> <span class='hs-varid'>xs</span> <span class='hs-conop'>:</span> <span class='hs-varid'>map</span> <span class='hs-varid'>f</span> <span class='hs-varid'>builtin</span>
<a name="line-60"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>builtin</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nub</span> <span class='hs-varop'>$</span> <span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span><span class='hs-keyword'>if</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-str'>"All"</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>staticHints</span> <span class='hs-keyword'>else</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Builtin</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>xs</span><span class='hs-keyglyph'>]</span>
<a name="line-61"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Unknown builtin hints: HLint.Builtin."</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>x</span> <span class='hs-varid'>staticHints</span>
<a name="line-62"></a>
<a name="line-63"></a>
<a name="line-64"></a><a name="classify"></a><span class='hs-definition'>classify</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Setting</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Idea</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Idea</span>
<a name="line-65"></a><span class='hs-definition'>classify</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span><span class='hs-layout'>{</span><span class='hs-varid'>severity</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldl'</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>severity</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filter</span> <span class='hs-varid'>isClassify</span> <span class='hs-varid'>xs</span><span class='hs-layout'>}</span>
<a name="line-66"></a> <span class='hs-keyword'>where</span>
<a name="line-67"></a> <span class='hs-comment'>-- figure out if we need to change the severity</span>
<a name="line-68"></a> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Idea</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Severity</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Setting</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Severity</span>
<a name="line-69"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span> <span class='hs-varid'>r</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>matchHint</span> <span class='hs-layout'>(</span><span class='hs-varid'>hintS</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>hint</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>matchFunc</span> <span class='hs-layout'>(</span><span class='hs-varid'>funcS</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>func_</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>severityS</span> <span class='hs-varid'>c</span>
<a name="line-70"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span>
<a name="line-71"></a>
<a name="line-72"></a> <span class='hs-varid'>func_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isParseError</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span><span class='hs-str'>""</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>func</span> <span class='hs-varid'>x</span>
<a name="line-73"></a> <span class='hs-varid'>matchHint</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>~=</span><span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-varid'>matchFunc</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-layout'>,</span><span class='hs-varid'>x2</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y1</span><span class='hs-layout'>,</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x1</span><span class='hs-varop'>~=</span><span class='hs-varid'>y1</span><span class='hs-layout'>)</span> <span class='hs-varop'>&&</span> <span class='hs-layout'>(</span><span class='hs-varid'>x2</span><span class='hs-varop'>~=</span><span class='hs-varid'>y2</span><span class='hs-layout'>)</span>
<a name="line-75"></a> <span class='hs-varid'>x</span> <span class='hs-varop'>~=</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>null</span> <span class='hs-varid'>x</span> <span class='hs-varop'>||</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>y</span>
</pre></body>
</html>
