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<title>System/Console/CmdArgs/Implicit/Reader.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE PatternGuards #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Console</span><span class='hs-varop'>.</span><span class='hs-conid'>CmdArgs</span><span class='hs-varop'>.</span><span class='hs-conid'>Implicit</span><span class='hs-varop'>.</span><span class='hs-conid'>Reader</span><span class='hs-layout'>(</span><span class='hs-conid'>Reader</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>reader</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
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<a name="line-5"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Generics</span><span class='hs-varop'>.</span><span class='hs-conid'>Any</span>
<a name="line-6"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Generics</span><span class='hs-varop'>.</span><span class='hs-conid'>Any</span><span class='hs-varop'>.</span><span class='hs-conid'>Prelude</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>A</span>
<a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Console</span><span class='hs-varop'>.</span><span class='hs-conid'>CmdArgs</span><span class='hs-varop'>.</span><span class='hs-conid'>Explicit</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'>Char</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'>Int</span>
<a name="line-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span>
<a name="line-11"></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-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
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<a name="line-15"></a><a name="Reader"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Reader</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Reader</span>
<a name="line-16"></a> <span class='hs-layout'>{</span><span class='hs-varid'>readerHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-17"></a> <span class='hs-layout'>,</span><span class='hs-varid'>readerBool</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span>
<a name="line-18"></a> <span class='hs-layout'>,</span><span class='hs-varid'>readerParts</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-19"></a> <span class='hs-layout'>,</span><span class='hs-varid'>readerRead</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Any</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-conid'>Any</span>
<a name="line-20"></a> <span class='hs-layout'>}</span>
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<a name="line-22"></a><a name="readerRead_"></a><span class='hs-comment'>-- reader tries to use the first argument to readerRead, but reader_ doesn't</span>
<a name="line-23"></a><span class='hs-definition'>readerRead_</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readerRead</span> <span class='hs-varid'>r</span> <span class='hs-varop'>$</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Invariant broken: reader/reader_"</span>
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<a name="line-25"></a>
<a name="line-26"></a><a name="reader"></a><span class='hs-definition'>reader</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Any</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Reader</span>
<a name="line-27"></a><span class='hs-definition'>reader</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>isList</span> <span class='hs-varid'>x</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>isString</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-28"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>reader_</span> <span class='hs-varop'>$</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-varid'>x</span>
<a name="line-29"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>r</span><span class='hs-layout'>{</span><span class='hs-varid'>readerRead</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>o</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>append</span> <span class='hs-varid'>o</span> <span class='hs-varop'>.</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>list_</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>readerRead_</span> <span class='hs-varid'>r</span> <span class='hs-varid'>s</span><span class='hs-layout'>}</span>
<a name="line-30"></a><span class='hs-definition'>reader</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reader_</span> <span class='hs-varid'>x</span>
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<a name="line-33"></a><a name="reader_"></a><span class='hs-definition'>reader_</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Any</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Reader</span>
<a name="line-34"></a><span class='hs-definition'>reader_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>isString</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Reader</span> <span class='hs-str'>"ITEM"</span> <span class='hs-conid'>False</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Right</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Any</span>
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<a name="line-37"></a><span class='hs-definition'>reader_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>typeName</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-str'>"Bool"</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Reader</span> <span class='hs-str'>"BOOL"</span> <span class='hs-conid'>True</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span>
<a name="line-38"></a> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Could not read as boolean, "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Right</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Any</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>parseBool</span> <span class='hs-varid'>s</span>
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<a name="line-41"></a><span class='hs-definition'>reader_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>res</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>catMaybes</span>
<a name="line-42"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>f</span> <span class='hs-str'>"INT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Integer</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"NUM"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Float</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"NUM"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Double</span><span class='hs-layout'>)</span>
<a name="line-43"></a> <span class='hs-layout'>,</span><span class='hs-varid'>f</span> <span class='hs-str'>"INT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Int</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"INT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Int8</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"INT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Int16</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"INT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Int32</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"INT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Int64</span><span class='hs-layout'>)</span>
<a name="line-44"></a> <span class='hs-layout'>,</span><span class='hs-varid'>f</span> <span class='hs-str'>"NAT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Word</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"NAT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"NAT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Word16</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"NAT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Word32</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span> <span class='hs-str'>"NAT"</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>Word64</span><span class='hs-layout'>)</span>
<a name="line-45"></a> <span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>res</span>
<a name="line-46"></a> <span class='hs-keyword'>where</span>
<a name="line-47"></a> <span class='hs-varid'>ty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>typeOf</span> <span class='hs-varid'>x</span>
<a name="line-48"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>hlp</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>typeOf</span> <span class='hs-layout'>(</span><span class='hs-conid'>Any</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>ty</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-49"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Reader</span> <span class='hs-varid'>hlp</span> <span class='hs-conid'>False</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>reads</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-50"></a> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-str'>""</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Any</span> <span class='hs-varop'>$</span> <span class='hs-varid'>x</span> <span class='hs-varop'>`asTypeOf`</span> <span class='hs-varid'>t</span>
<a name="line-51"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Could not read as type "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeOf</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Any</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>", "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>s</span>
<a name="line-52"></a>
<a name="line-53"></a>
<a name="line-54"></a><span class='hs-definition'>reader_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>isList</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-55"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>reader_</span> <span class='hs-varop'>$</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-varid'>x</span>
<a name="line-56"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>r</span><span class='hs-layout'>{</span><span class='hs-varid'>readerRead</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>list_</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>readerRead_</span> <span class='hs-varid'>r</span><span class='hs-layout'>}</span>
<a name="line-57"></a>
<a name="line-58"></a>
<a name="line-59"></a><span class='hs-definition'>reader_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>isMaybe</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-60"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>reader_</span> <span class='hs-varop'>$</span> <span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>fromMaybe</span> <span class='hs-varid'>x</span>
<a name="line-61"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>r</span><span class='hs-layout'>{</span><span class='hs-varid'>readerRead</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-conid'>A</span><span class='hs-varop'>.</span><span class='hs-varid'>just_</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>readerRead_</span> <span class='hs-varid'>r</span><span class='hs-layout'>}</span>
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<a name="line-63"></a>
<a name="line-64"></a><span class='hs-definition'>reader_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isAlgType</span> <span class='hs-varid'>x</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>length</span> <span class='hs-varid'>xs</span> <span class='hs-varop'>></span> <span class='hs-num'>1</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>all</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-varop'>.</span> <span class='hs-varid'>arity</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-65"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Reader</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toUpper</span> <span class='hs-varop'>$</span> <span class='hs-varid'>typeShell</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeName</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-str'>"Bool"</span><span class='hs-layout'>)</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>rd</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span>
<a name="line-66"></a> <span class='hs-keyword'>where</span>
<a name="line-67"></a> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>compose0</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ctors</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-68"></a>
<a name="line-69"></a> <span class='hs-varid'>rd</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Could not read, expected one of: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>unwords</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-70"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>find</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fst</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Right</span> <span class='hs-varid'>x</span>
<a name="line-71"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ys</span> <span class='hs-varop'>></span> <span class='hs-num'>1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Ambiguous read, could be any of: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>unwords</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-72"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>$</span> <span class='hs-varid'>head</span> <span class='hs-varid'>ys</span>
<a name="line-73"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>isPrefixOf</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fst</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-74"></a>
<a name="line-75"></a>
<a name="line-76"></a><span class='hs-definition'>reader_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isAlgType</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ctors</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>compose0</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-77"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>children</span> <span class='hs-varid'>x</span>
<a name="line-78"></a> <span class='hs-varid'>rs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>reader_</span> <span class='hs-varid'>cs</span>
<a name="line-79"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>readerParts</span> <span class='hs-varid'>rs</span>
<a name="line-80"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Reader</span> <span class='hs-layout'>(</span><span class='hs-varid'>uncommas</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>readerHelp</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>readerBool</span> <span class='hs-varid'>rs</span> <span class='hs-varop'>==</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>True</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span> <span class='hs-varop'>$</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span>
<a name="line-81"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commas</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>in</span>
<a name="line-82"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>n</span> <span class='hs-varop'>==</span> <span class='hs-num'>1</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>recompose</span> <span class='hs-varid'>x</span> <span class='hs-varop'>.</span> <span class='hs-varid'>return</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>readerRead_</span> <span class='hs-layout'>(</span><span class='hs-varid'>head</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-num'>1</span> <span class='hs-varop'>.</span> <span class='hs-varid'>readerParts</span><span class='hs-layout'>)</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-83"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ss</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>n</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Left</span> <span class='hs-str'>"Incorrect number of commas for fields"</span>
<a name="line-84"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>recompose</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sequenceEither</span> <span class='hs-varop'>$</span> <span class='hs-varid'>zipWith</span> <span class='hs-varid'>readerRead_</span> <span class='hs-varid'>rs</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>uncommas</span> <span class='hs-varop'>$</span> <span class='hs-varid'>takes</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>readerParts</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ss</span>
<a name="line-85"></a>
<a name="line-86"></a>
<a name="line-87"></a><span class='hs-definition'>reader_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-88"></a>
<a name="line-89"></a>
<a name="line-90"></a><a name="uncommas"></a><span class='hs-definition'>uncommas</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>","</span>
<a name="line-91"></a><a name="commas"></a><span class='hs-definition'>commas</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lines</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</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-chr'>','</span> <span class='hs-keyword'>then</span> <span class='hs-chr'>'\n'</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-92"></a>
<a name="line-93"></a>
<a name="line-94"></a><a name="takes"></a><span class='hs-definition'>takes</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-95"></a><span class='hs-definition'>takes</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-conop'>:</span><span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:</span> <span class='hs-varid'>takes</span> <span class='hs-varid'>is</span> <span class='hs-varid'>b</span>
<a name="line-96"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitAt</span> <span class='hs-varid'>i</span> <span class='hs-varid'>xs</span>
<a name="line-97"></a>
<a name="line-98"></a><a name="sequenceEither"></a><span class='hs-definition'>sequenceEither</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Right</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-99"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Left</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>x</span>
<a name="line-100"></a> <span class='hs-varid'>f</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Left</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>x</span>
<a name="line-101"></a> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Right</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Right</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Right</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
</pre></body>
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distrib
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Fedora
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i386
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