<?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://code.haskell.org/~malcolm/hscolour/ -->
<title>src/full/Agda/Compiler/HaskellTypes.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-- | Translating Agda types to Haskell types. Used to ensure that imported</span>
<a name="line-4"></a><span class='hs-comment'>-- Haskell functions have the right type.</span>
<a name="line-5"></a>
<a name="line-6"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Compiler</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellTypes</span> <span class='hs-keyword'>where</span>
<a name="line-7"></a>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</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'>Char</span>
<a name="line-11"></a>
<a name="line-12"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Common</span>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-14"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Builtin</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Pretty</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Reduce</span>
<a name="line-18"></a><span class='hs-comment'>-- import Agda.TypeChecking.Rules.Builtin.Coinduction</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Substitute</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>TypeChecking</span><span class='hs-varop'>.</span><span class='hs-conid'>Free</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Impossible</span>
<a name="line-23"></a>
<a name="line-24"></a><span class='hs-cpp'>#include "../undefined.h"</span>
<a name="line-25"></a>
<a name="line-26"></a><a name="HaskellKind"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>HaskellKind</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-27"></a>
<a name="line-28"></a><a name="hsStar"></a><span class='hs-definition'>hsStar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HaskellKind</span>
<a name="line-29"></a><span class='hs-definition'>hsStar</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"*"</span>
<a name="line-30"></a>
<a name="line-31"></a><a name="hsKFun"></a><span class='hs-definition'>hsKFun</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HaskellKind</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellKind</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellKind</span>
<a name="line-32"></a><span class='hs-definition'>hsKFun</span> <span class='hs-varid'>k</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"("</span> <span class='hs-varop'>++</span> <span class='hs-varid'>k</span> <span class='hs-varop'>++</span> <span class='hs-str'>" -> "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>l</span> <span class='hs-varop'>++</span> <span class='hs-str'>")"</span>
<a name="line-33"></a>
<a name="line-34"></a><a name="hsFun"></a><span class='hs-definition'>hsFun</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HaskellKind</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellKind</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellKind</span>
<a name="line-35"></a><span class='hs-definition'>hsFun</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"("</span> <span class='hs-varop'>++</span> <span class='hs-varid'>a</span> <span class='hs-varop'>++</span> <span class='hs-str'>" -> "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>b</span> <span class='hs-varop'>++</span> <span class='hs-str'>")"</span>
<a name="line-36"></a>
<a name="line-37"></a><a name="hsUnit"></a><span class='hs-definition'>hsUnit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HaskellType</span>
<a name="line-38"></a><span class='hs-definition'>hsUnit</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"()"</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="hsVar"></a><span class='hs-definition'>hsVar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Name</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellType</span>
<a name="line-41"></a><span class='hs-definition'>hsVar</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"x"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>encode</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-42"></a> <span class='hs-keyword'>where</span>
<a name="line-43"></a> <span class='hs-varid'>okChars</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'a'</span><span class='hs-keyglyph'>..</span><span class='hs-chr'>'z'</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'A'</span><span class='hs-keyglyph'>..</span><span class='hs-chr'>'Y'</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-str'>"_'"</span>
<a name="line-44"></a> <span class='hs-varid'>encode</span> <span class='hs-chr'>'Z'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"ZZ"</span>
<a name="line-45"></a> <span class='hs-varid'>encode</span> <span class='hs-varid'>c</span>
<a name="line-46"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>c</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>okChars</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-47"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Z"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromEnum</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-48"></a>
<a name="line-49"></a>
<a name="line-50"></a><a name="hsApp"></a><span class='hs-definition'>hsApp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>HaskellType</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellType</span>
<a name="line-51"></a><span class='hs-definition'>hsApp</span> <span class='hs-varid'>d</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>d</span>
<a name="line-52"></a><span class='hs-definition'>hsApp</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>as</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"("</span> <span class='hs-varop'>++</span> <span class='hs-varid'>unwords</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>")"</span>
<a name="line-53"></a>
<a name="line-54"></a><a name="hsForall"></a><span class='hs-definition'>hsForall</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellType</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HaskellType</span>
<a name="line-55"></a><span class='hs-definition'>hsForall</span> <span class='hs-varid'>x</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"(forall "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-str'>". "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>a</span> <span class='hs-varop'>++</span> <span class='hs-str'>")"</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="notAHaskellKind"></a><span class='hs-definition'>notAHaskellKind</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Type</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-varid'>a</span>
<a name="line-58"></a><span class='hs-definition'>notAHaskellKind</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-59"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fsep</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pwords</span> <span class='hs-str'>"The type"</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>prettyTCM</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span>
<a name="line-60"></a> <span class='hs-varid'>pwords</span> <span class='hs-str'>"cannot be translated to a Haskell kind."</span>
<a name="line-61"></a> <span class='hs-varid'>typeError</span> <span class='hs-varop'>$</span> <span class='hs-conid'>GenericError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show</span> <span class='hs-varid'>err</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="notAHaskellType"></a><span class='hs-definition'>notAHaskellType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Type</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-varid'>a</span>
<a name="line-64"></a><span class='hs-definition'>notAHaskellType</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-65"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fsep</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pwords</span> <span class='hs-str'>"The type"</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>prettyTCM</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span>
<a name="line-66"></a> <span class='hs-varid'>pwords</span> <span class='hs-str'>"cannot be translated to a Haskell type."</span>
<a name="line-67"></a> <span class='hs-varid'>typeError</span> <span class='hs-varop'>$</span> <span class='hs-conid'>GenericError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show</span> <span class='hs-varid'>err</span>
<a name="line-68"></a>
<a name="line-69"></a><a name="getHsType"></a><span class='hs-definition'>getHsType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>QName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>HaskellType</span>
<a name="line-70"></a><span class='hs-definition'>getHsType</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-71"></a> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>compiledHaskell</span> <span class='hs-varop'>.</span> <span class='hs-varid'>defCompiledRep</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getConstInfo</span> <span class='hs-varid'>x</span>
<a name="line-72"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>of</span>
<a name="line-73"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>HsType</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>t</span>
<a name="line-74"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>HsDefn</span> <span class='hs-varid'>t</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>hsUnit</span>
<a name="line-75"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>notAHaskellType</span> <span class='hs-layout'>(</span><span class='hs-conid'>El</span> <span class='hs-conid'>Prop</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Def</span> <span class='hs-varid'>x</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-76"></a>
<a name="line-77"></a><a name="getHsVar"></a><span class='hs-definition'>getHsVar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Nat</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>HaskellCode</span>
<a name="line-78"></a><span class='hs-definition'>getHsVar</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hsVar</span> <span class='hs-varop'><$></span> <span class='hs-varid'>nameOfBV</span> <span class='hs-varid'>i</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="isHaskellKind"></a><span class='hs-definition'>isHaskellKind</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Type</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>Bool</span>
<a name="line-81"></a><span class='hs-definition'>isHaskellKind</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span>
<a name="line-82"></a> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>True</span> <span class='hs-varop'><$></span> <span class='hs-varid'>haskellKind</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'>`catchError`</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>False</span>
<a name="line-83"></a>
<a name="line-84"></a><a name="haskellKind"></a><span class='hs-definition'>haskellKind</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Type</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>HaskellKind</span>
<a name="line-85"></a><span class='hs-definition'>haskellKind</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-86"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>reduce</span> <span class='hs-varid'>a</span>
<a name="line-87"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>unEl</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span>
<a name="line-88"></a> <span class='hs-conid'>Sort</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>hsStar</span>
<a name="line-89"></a> <span class='hs-conid'>Pi</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>hsKFun</span> <span class='hs-varop'><$></span> <span class='hs-varid'>haskellKind</span> <span class='hs-layout'>(</span><span class='hs-varid'>unDom</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'><*></span> <span class='hs-varid'>underAbstraction</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>haskellKind</span>
<a name="line-90"></a> <span class='hs-conid'>Def</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-91"></a> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>compiledHaskell</span> <span class='hs-varop'>.</span> <span class='hs-varid'>defCompiledRep</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getConstInfo</span> <span class='hs-varid'>d</span>
<a name="line-92"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>of</span>
<a name="line-93"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>HsType</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>hsStar</span>
<a name="line-94"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>notAHaskellKind</span> <span class='hs-varid'>a</span>
<a name="line-95"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>notAHaskellKind</span> <span class='hs-varid'>a</span>
<a name="line-96"></a>
<a name="line-97"></a><span class='hs-comment'>-- | Note that @Inf a b@, where @Inf@ is the INFINITY builtin, is</span>
<a name="line-98"></a><span class='hs-comment'>-- translated to @<translation of b>@ (assuming that all coinductive</span>
<a name="line-99"></a><span class='hs-comment'>-- builtins are defined).</span>
<a name="line-100"></a><span class='hs-comment'>--</span>
<a name="line-101"></a><span class='hs-comment'>-- Note that if @haskellType@ supported universe polymorphism then the</span>
<a name="line-102"></a><span class='hs-comment'>-- special treatment of INFINITY might not be needed.</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="haskellType"></a><span class='hs-definition'>haskellType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Type</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TCM</span> <span class='hs-conid'>HaskellType</span>
<a name="line-105"></a><span class='hs-definition'>haskellType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftTCM</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromType</span>
<a name="line-106"></a> <span class='hs-keyword'>where</span>
<a name="line-107"></a> <span class='hs-varid'>fromArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromTerm</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unArg</span><span class='hs-layout'>)</span>
<a name="line-108"></a> <span class='hs-varid'>fromType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromTerm</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unEl</span>
<a name="line-109"></a> <span class='hs-varid'>fromTerm</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-110"></a> <span class='hs-varid'>v</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>reduce</span> <span class='hs-varid'>v</span>
<a name="line-111"></a> <span class='hs-varid'>reportSLn</span> <span class='hs-str'>"compile.haskell.type"</span> <span class='hs-num'>50</span> <span class='hs-varop'>$</span> <span class='hs-str'>"toHaskellType "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>v</span>
<a name="line-112"></a> <span class='hs-varid'>kit</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftTCM</span> <span class='hs-varid'>coinductionKit</span>
<a name="line-113"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>notAHaskellType</span> <span class='hs-layout'>(</span><span class='hs-conid'>El</span> <span class='hs-conid'>Prop</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span>
<a name="line-114"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>v</span> <span class='hs-keyword'>of</span>
<a name="line-115"></a> <span class='hs-conid'>Var</span> <span class='hs-varid'>x</span> <span class='hs-varid'>args</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>hsApp</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getHsVar</span> <span class='hs-varid'>x</span> <span class='hs-varop'><*></span> <span class='hs-varid'>fromArgs</span> <span class='hs-varid'>args</span>
<a name="line-116"></a> <span class='hs-conid'>Def</span> <span class='hs-varid'>d</span> <span class='hs-varid'>args</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>d</span> <span class='hs-varop'>==</span> <span class='hs-layout'>(</span><span class='hs-varid'>nameOfInf</span> <span class='hs-varop'><$></span> <span class='hs-varid'>kit</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-117"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>args</span> <span class='hs-keyword'>of</span>
<a name="line-118"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fromTerm</span> <span class='hs-layout'>(</span><span class='hs-varid'>unArg</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-119"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span>
<a name="line-120"></a> <span class='hs-conid'>Def</span> <span class='hs-varid'>d</span> <span class='hs-varid'>args</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>hsApp</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getHsType</span> <span class='hs-varid'>d</span> <span class='hs-varop'><*></span> <span class='hs-varid'>fromArgs</span> <span class='hs-varid'>args</span>
<a name="line-121"></a> <span class='hs-conid'>Pi</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span>
<a name="line-122"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>isBinderUsed</span> <span class='hs-varid'>b</span> <span class='hs-comment'>-- Andreas, 2012-04-03. Q: could we rely on Abs/NoAbs instead of again checking freeness of variable?</span>
<a name="line-123"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>underAbstraction</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span>
<a name="line-124"></a> <span class='hs-varid'>hsForall</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getHsVar</span> <span class='hs-num'>0</span> <span class='hs-varop'><*></span>
<a name="line-125"></a> <span class='hs-layout'>(</span><span class='hs-varid'>hsFun</span> <span class='hs-varop'><$></span> <span class='hs-varid'>fromType</span> <span class='hs-layout'>(</span><span class='hs-varid'>unDom</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'><*></span> <span class='hs-varid'>fromType</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-126"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>hsFun</span> <span class='hs-varop'><$></span> <span class='hs-varid'>fromType</span> <span class='hs-layout'>(</span><span class='hs-varid'>unDom</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'><*></span> <span class='hs-varid'>fromType</span> <span class='hs-layout'>(</span><span class='hs-varid'>absApp</span> <span class='hs-varid'>b</span> <span class='hs-sel'>__IMPOSSIBLE__</span><span class='hs-layout'>)</span>
<a name="line-127"></a> <span class='hs-conid'>Con</span> <span class='hs-varid'>c</span> <span class='hs-varid'>args</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>hsApp</span> <span class='hs-varop'><$></span> <span class='hs-varid'>getHsType</span> <span class='hs-varid'>c</span> <span class='hs-varop'><*></span> <span class='hs-varid'>fromArgs</span> <span class='hs-varid'>args</span>
<a name="line-128"></a> <span class='hs-conid'>Lam</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span>
<a name="line-129"></a> <span class='hs-conid'>Level</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>hsUnit</span>
<a name="line-130"></a> <span class='hs-conid'>Lit</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>hsUnit</span>
<a name="line-131"></a> <span class='hs-conid'>Sort</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>hsUnit</span>
<a name="line-132"></a> <span class='hs-conid'>Shared</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fromTerm</span> <span class='hs-varop'>$</span> <span class='hs-varid'>derefPtr</span> <span class='hs-varid'>p</span>
<a name="line-133"></a> <span class='hs-conid'>MetaV</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span>
<a name="line-134"></a> <span class='hs-conid'>DontCare</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>err</span>
</pre></body>
</html>
