<?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/Data/Typeable/TypeRepLib.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <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 : Data.Typeable.TypeRepLib</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) SAM Group, KTH/ICT/ECS 2007-2008</span> <a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span> <a name="line-6"></a><span class='hs-comment'>-- </span> <a name="line-7"></a><span class='hs-comment'>-- Maintainer : forsyde-dev@ict.kth.se</span> <a name="line-8"></a><span class='hs-comment'>-- Stability : experimental</span> <a name="line-9"></a><span class='hs-comment'>-- Portability : portable</span> <a name="line-10"></a><span class='hs-comment'>--</span> <a name="line-11"></a><span class='hs-comment'>-- This module provides basic functions related to Data.Typeables's 'TypeRep'.</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-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Typeable</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeRepLib</span> <span class='hs-layout'>(</span><span class='hs-varid'>unArrowT</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-15"></a> <a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Typeable</span> <a name="line-17"></a> <a name="line-18"></a> <a name="line-19"></a><a name="unArrowT"></a><span class='hs-comment'>-- | Obtains the arguments and return type of a given 'TypeRep' </span> <a name="line-20"></a><span class='hs-comment'>-- (normally a function)</span> <a name="line-21"></a><span class='hs-comment'>-- together with its 'Context' (non-empty if the type is polymorphic)</span> <a name="line-22"></a><span class='hs-definition'>unArrowT</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TypeRep</span> <span class='hs-comment'>-- ^ TypeRep to observe </span> <a name="line-23"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>TypeRep</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>TypeRep</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ (args 'TypeRep', ret 'TypeRep')</span> <a name="line-24"></a><span class='hs-definition'>unArrowT</span> <span class='hs-varid'>rep</span> <a name="line-25"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>repCon</span> <span class='hs-varop'>==</span> <span class='hs-varid'>arrowTyCon</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>args'</span><span class='hs-layout'>,</span> <span class='hs-varid'>ret'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unArrowT</span> <span class='hs-varid'>arrowArg2</span> <a name="line-26"></a> <span class='hs-keyword'>in</span> <span class='hs-layout'>(</span><span class='hs-varid'>arrowArg1</span><span class='hs-conop'>:</span><span class='hs-varid'>args'</span><span class='hs-layout'>,</span> <span class='hs-varid'>ret'</span><span class='hs-layout'>)</span> <a name="line-27"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</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'>rep</span><span class='hs-layout'>)</span> <a name="line-28"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>repCon</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>~</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>arrowArg1</span><span class='hs-layout'>,</span><span class='hs-varid'>arrowArg2</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitTyConApp</span> <span class='hs-varid'>rep</span> <a name="line-29"></a> <a name="line-30"></a><a name="arrowTyCon"></a><span class='hs-definition'>arrowTyCon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>TyCon</span> <a name="line-31"></a><span class='hs-definition'>arrowTyCon</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeRepTyCon</span><span class='hs-varop'>.</span><span class='hs-varid'>typeOf</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> </pre></body> </html>