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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : PPHelpers</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : HWT Group (c) 2004, haskelldb-users@lists.sourceforge.net</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : haskelldb-users@lists.sourceforge.net</span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : non-portable</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Various functions used when pretty printing stuff</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>DBSpec</span><span class='hs-varop'>.</span><span class='hs-conid'>PPHelpers</span> <span class='hs-keyword'>where</span>
<a name="line-16"></a><span class='hs-comment'>-- no explicit export, we want ALL of it</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <span class='hs-layout'>(</span><span class='hs-varid'>toLower</span><span class='hs-layout'>,</span> <span class='hs-varid'>toUpper</span><span class='hs-layout'>,</span> <span class='hs-varid'>isAlpha</span><span class='hs-layout'>,</span> <span class='hs-varid'>isAlphaNum</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>PrettyPrint</span><span class='hs-varop'>.</span><span class='hs-conid'>HughesPJ</span>
<a name="line-20"></a>
<a name="line-21"></a><a name="newline"></a><span class='hs-definition'>newline</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'\n'</span>
<a name="line-22"></a>
<a name="line-23"></a><a name="ppComment"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-24"></a><span class='hs-comment'>-- Comment that looks like this</span>
<a name="line-25"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-26"></a><span class='hs-definition'>ppComment</span> <span class='hs-varid'>txt</span>
<a name="line-27"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commentLine</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>vcat</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>commentText</span> <span class='hs-varid'>txt</span><span class='hs-layout'>)</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>commentLine</span>
<a name="line-28"></a> <span class='hs-keyword'>where</span>
<a name="line-29"></a> <span class='hs-varid'>commentLine</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span> <span class='hs-layout'>(</span><span class='hs-varid'>replicate</span> <span class='hs-num'>75</span> <span class='hs-chr'>'-'</span><span class='hs-layout'>)</span>
<a name="line-30"></a> <span class='hs-varid'>commentText</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span> <span class='hs-layout'>(</span><span class='hs-str'>"-- "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="fileName"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-33"></a><span class='hs-comment'>-- Create valid Names</span>
<a name="line-34"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-35"></a><span class='hs-definition'>fileName</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>elem</span> <span class='hs-chr'>'.'</span> <span class='hs-varid'>baseName</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>name</span> <span class='hs-varop'>++</span> <span class='hs-str'>".hs"</span>
<a name="line-36"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>name</span>
<a name="line-37"></a> <span class='hs-keyword'>where</span>
<a name="line-38"></a> <span class='hs-varid'>baseName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverse</span> <span class='hs-layout'>(</span><span class='hs-varid'>takeWhile</span> <span class='hs-layout'>(</span><span class='hs-varop'>/=</span><span class='hs-chr'>'\\'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-39"></a>
<a name="line-40"></a>
<a name="line-41"></a><a name="MakeIdentifiers"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MakeIdentifiers</span> <span class='hs-keyglyph'>=</span>
<a name="line-42"></a> <span class='hs-conid'>MakeIdentifiers</span>
<a name="line-43"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>moduleName</span><span class='hs-layout'>,</span> <span class='hs-varid'>identifier</span><span class='hs-layout'>,</span> <span class='hs-varid'>toType</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-layout'>}</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="mkIdentPreserving"></a><span class='hs-definition'>mkIdentPreserving</span> <span class='hs-keyglyph'>=</span>
<a name="line-46"></a> <span class='hs-conid'>MakeIdentifiers</span>
<a name="line-47"></a> <span class='hs-layout'>{</span>
<a name="line-48"></a> <span class='hs-varid'>moduleName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkChars</span> <span class='hs-varop'>.</span> <span class='hs-varid'>checkUpper</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-varid'>identifier</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkChars</span> <span class='hs-varop'>.</span> <span class='hs-varid'>checkKeyword</span> <span class='hs-varop'>.</span> <span class='hs-varid'>checkLower</span><span class='hs-layout'>,</span>
<a name="line-50"></a> <span class='hs-varid'>toType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkChars</span> <span class='hs-varop'>.</span> <span class='hs-varid'>checkKeyword</span> <span class='hs-varop'>.</span> <span class='hs-varid'>checkUpper</span>
<a name="line-51"></a> <span class='hs-layout'>}</span>
<a name="line-52"></a>
<a name="line-53"></a><a name="mkIdentCamelCase"></a><span class='hs-definition'>mkIdentCamelCase</span> <span class='hs-keyglyph'>=</span>
<a name="line-54"></a> <span class='hs-conid'>MakeIdentifiers</span>
<a name="line-55"></a> <span class='hs-layout'>{</span>
<a name="line-56"></a> <span class='hs-varid'>moduleName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkChars</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toUpperCamelCase</span><span class='hs-layout'>,</span>
<a name="line-57"></a> <span class='hs-varid'>identifier</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkChars</span> <span class='hs-varop'>.</span> <span class='hs-varid'>checkKeyword</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toLowerCamelCase</span><span class='hs-layout'>,</span>
<a name="line-58"></a> <span class='hs-varid'>toType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkChars</span> <span class='hs-varop'>.</span> <span class='hs-varid'>checkKeyword</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toUpperCamelCase</span>
<a name="line-59"></a> <span class='hs-layout'>}</span>
<a name="line-60"></a>
<a name="line-61"></a>
<a name="line-62"></a><a name="toLowerCamelCase"></a><span class='hs-definition'>toLowerCamelCase</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-63"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span> <span class='hs-conop'>:</span> <span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>split</span> <span class='hs-layout'>(</span><span class='hs-chr'>'_'</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>dropWhile</span> <span class='hs-layout'>(</span><span class='hs-chr'>'_'</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>s</span>
<a name="line-64"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>checkLower</span> <span class='hs-varid'>h</span> <span class='hs-conop'>:</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>checkUpperDef</span> <span class='hs-chr'>'_'</span><span class='hs-layout'>)</span> <span class='hs-varid'>rest</span>
<a name="line-65"></a><span class='hs-definition'>toLowerCamelCase</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span>
<a name="line-66"></a> <span class='hs-varid'>error</span> <span class='hs-str'>"toLowerCamelCase: identifier must be non-empty"</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="toUpperCamelCase"></a><span class='hs-definition'>toUpperCamelCase</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-69"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>h</span> <span class='hs-conop'>:</span> <span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>split</span> <span class='hs-layout'>(</span><span class='hs-chr'>'_'</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>dropWhile</span> <span class='hs-layout'>(</span><span class='hs-chr'>'_'</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>s</span>
<a name="line-70"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>checkUpper</span> <span class='hs-varid'>h</span> <span class='hs-conop'>:</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>checkUpperDef</span> <span class='hs-chr'>'_'</span><span class='hs-layout'>)</span> <span class='hs-varid'>rest</span>
<a name="line-71"></a><span class='hs-definition'>toUpperCamelCase</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span>
<a name="line-72"></a> <span class='hs-varid'>error</span> <span class='hs-str'>"toUpperCamelCase: identifier must be non-empty"</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="split"></a><span class='hs-comment'>{- |
<a name="line-75"></a>Generalization of 'words' and 'lines' to any separating character set.
<a name="line-76"></a>-}</span>
<a name="line-77"></a><span class='hs-definition'>split</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-78"></a><span class='hs-definition'>split</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span>
<a name="line-79"></a> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-varid'>x</span> <span class='hs-varid'>yt</span><span class='hs-keyglyph'>@</span> <span class='hs-keyglyph'>~</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>p</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-conop'>:</span><span class='hs-varid'>yt</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>y</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>[]</span><span class='hs-keyglyph'>]</span>
<a name="line-80"></a>
<a name="line-81"></a><a name="checkChars"></a><span class='hs-definition'>checkChars</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>replace</span> <span class='hs-varid'>s</span>
<a name="line-82"></a> <span class='hs-keyword'>where</span>
<a name="line-83"></a> <span class='hs-varid'>replace</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isAlphaNum</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span>
<a name="line-84"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-chr'>'_'</span>
<a name="line-85"></a>
<a name="line-86"></a><a name="checkKeyword"></a><span class='hs-definition'>checkKeyword</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>elem</span> <span class='hs-varid'>s</span> <span class='hs-varid'>keywords</span> <span class='hs-keyglyph'>=</span> <span class='hs-chr'>'x'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>s</span>
<a name="line-87"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-88"></a> <span class='hs-keyword'>where</span>
<a name="line-89"></a> <span class='hs-varid'>keywords</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-str'>"module"</span><span class='hs-layout'>,</span> <span class='hs-str'>"where"</span><span class='hs-layout'>,</span> <span class='hs-str'>"import"</span>
<a name="line-90"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"infix"</span><span class='hs-layout'>,</span> <span class='hs-str'>"infixr"</span><span class='hs-layout'>,</span> <span class='hs-str'>"infixl"</span>
<a name="line-91"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"type"</span><span class='hs-layout'>,</span> <span class='hs-str'>"newtype"</span><span class='hs-layout'>,</span> <span class='hs-str'>"data"</span>
<a name="line-92"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"deriving"</span>
<a name="line-93"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"class"</span><span class='hs-layout'>,</span> <span class='hs-str'>"instance"</span>
<a name="line-94"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"do"</span><span class='hs-layout'>,</span> <span class='hs-str'>"return"</span>
<a name="line-95"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"let"</span><span class='hs-layout'>,</span> <span class='hs-str'>"in"</span>
<a name="line-96"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"case"</span><span class='hs-layout'>,</span> <span class='hs-str'>"of"</span>
<a name="line-97"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"if"</span><span class='hs-layout'>,</span> <span class='hs-str'>"then"</span><span class='hs-layout'>,</span> <span class='hs-str'>"else"</span>
<a name="line-98"></a> <span class='hs-layout'>,</span> <span class='hs-str'>"id"</span><span class='hs-layout'>,</span> <span class='hs-str'>"zip"</span><span class='hs-layout'>,</span><span class='hs-str'>"baseTable"</span>
<a name="line-99"></a> <span class='hs-keyglyph'>]</span>
<a name="line-100"></a>
<a name="line-101"></a><a name="checkUpper"></a><span class='hs-definition'>checkUpper</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Empty name from database?"</span>
<a name="line-102"></a><span class='hs-definition'>checkUpper</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkUpperDef</span> <span class='hs-chr'>'X'</span> <span class='hs-varid'>s</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="checkLower"></a><span class='hs-definition'>checkLower</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Empty name from database?"</span>
<a name="line-105"></a><span class='hs-definition'>checkLower</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>checkLowerDef</span> <span class='hs-chr'>'x'</span> <span class='hs-varid'>s</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="checkUpperDef"></a><span class='hs-definition'>checkUpperDef</span> <span class='hs-keyword'>_</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-108"></a><span class='hs-definition'>checkUpperDef</span> <span class='hs-varid'>d</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</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>
<a name="line-109"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isAlpha</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toUpper</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span>
<a name="line-110"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>s</span> <span class='hs-comment'>-- isDigit?</span>
<a name="line-111"></a>
<a name="line-112"></a><a name="checkLowerDef"></a><span class='hs-definition'>checkLowerDef</span> <span class='hs-keyword'>_</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-113"></a><span class='hs-definition'>checkLowerDef</span> <span class='hs-varid'>d</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</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>
<a name="line-114"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isAlpha</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span>
<a name="line-115"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>s</span> <span class='hs-comment'>-- isDigit?</span>
</pre></body>
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