<?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>System/Console/CmdArgs/Helper.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE RecordWildCards, TypeSynonymInstances, FlexibleInstances #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-- | Module for implementing CmdArgs helpers. A CmdArgs helper is an external program,</span>
<a name="line-4"></a><span class='hs-comment'>-- that helps a user construct the command line arguments. To use a helper set the</span>
<a name="line-5"></a><span class='hs-comment'>-- environment variable @$CMDARGS_HELPER@ (or @$CMDARGS_HELPER_/YOURPROGRAM/@) to</span>
<a name="line-6"></a><span class='hs-comment'>-- one of:</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- * @echo /foo/@ will cause @/foo/@ to be used as the command arguments.</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-- * @cmdargs-browser@ will cause a web browser to appear to help entering the arguments.</span>
<a name="line-11"></a><span class='hs-comment'>-- For this command to work, you will need to install the @cmdargs-browser@ package:</span>
<a name="line-12"></a><span class='hs-comment'>-- <<a href="http://hackage.haskell.org/package/cmdargs-browser">http://hackage.haskell.org/package/cmdargs-browser</a>></span>
<a name="line-13"></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'>Helper</span><span class='hs-layout'>(</span>
<a name="line-14"></a> <span class='hs-comment'>-- * Called by the main program</span>
<a name="line-15"></a> <span class='hs-varid'>execute</span><span class='hs-layout'>,</span>
<a name="line-16"></a> <span class='hs-comment'>-- * Called by the helper program</span>
<a name="line-17"></a> <span class='hs-conid'>Unknown</span><span class='hs-layout'>,</span> <span class='hs-varid'>receive</span><span class='hs-layout'>,</span> <span class='hs-varid'>reply</span><span class='hs-layout'>,</span> <span class='hs-varid'>comment</span>
<a name="line-18"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-19"></a><span class='hs-comment'>-- Should really be under Explicit, but want to export it top-level as Helper</span>
<a name="line-20"></a>
<a name="line-21"></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><span class='hs-varop'>.</span><span class='hs-conid'>Type</span>
<a name="line-22"></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><span class='hs-varop'>.</span><span class='hs-conid'>SplitJoin</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Process</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-26"></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-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IORef</span>
<a name="line-28"></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-29"></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-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Exit</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span>
<a name="line-33"></a>
<a name="line-34"></a>
<a name="line-35"></a><a name="hOut"></a><span class='hs-definition'>hOut</span> <span class='hs-varid'>h</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-36"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>h</span> <span class='hs-varid'>x</span>
<a name="line-37"></a> <span class='hs-varid'>hFlush</span> <span class='hs-varid'>h</span>
<a name="line-38"></a>
<a name="line-39"></a>
<a name="line-40"></a><a name="execute"></a><span class='hs-comment'>-- | Run a remote command line entry.</span>
<a name="line-41"></a><span class='hs-definition'>execute</span>
<a name="line-42"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Name of the command to run, e.g. @echo argument@, @cmdargs-browser@</span>
<a name="line-43"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mode</span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- ^ Mode to run remotely</span>
<a name="line-44"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Initial set of command line flags (not supported by all helpers)</span>
<a name="line-45"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Either</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-layout'>)</span> <span class='hs-comment'>-- ^ Either an error message, or a list of flags to use</span>
<a name="line-46"></a><span class='hs-definition'>execute</span> <span class='hs-varid'>cmd</span> <span class='hs-varid'>mode</span> <span class='hs-varid'>args</span>
<a name="line-47"></a> <span class='hs-keyglyph'>|</span> <span class='hs-str'>"echo"</span> <span class='hs-varop'>==</span> <span class='hs-varid'>takeWhile</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>isSpace</span><span class='hs-layout'>)</span> <span class='hs-varid'>cmd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>splitArgs</span> <span class='hs-varop'>$</span> <span class='hs-varid'>drop</span> <span class='hs-num'>4</span> <span class='hs-varid'>cmd</span>
<a name="line-48"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withBuffering</span> <span class='hs-varid'>stdout</span> <span class='hs-conid'>NoBuffering</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-49"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>hin</span><span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>hout</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>createProcess</span> <span class='hs-layout'>(</span><span class='hs-varid'>shell</span> <span class='hs-varid'>cmd</span><span class='hs-layout'>)</span><span class='hs-layout'>{</span><span class='hs-varid'>std_in</span><span class='hs-keyglyph'>=</span><span class='hs-conid'>CreatePipe</span><span class='hs-layout'>,</span> <span class='hs-varid'>std_out</span><span class='hs-keyglyph'>=</span><span class='hs-conid'>CreatePipe</span><span class='hs-layout'>}</span>
<a name="line-50"></a> <span class='hs-comment'>-- none of the buffering seems necessary in practice, but better safe than sorry</span>
<a name="line-51"></a> <span class='hs-varid'>hSetBuffering</span> <span class='hs-varid'>hin</span> <span class='hs-conid'>LineBuffering</span>
<a name="line-52"></a> <span class='hs-varid'>hSetBuffering</span> <span class='hs-varid'>hout</span> <span class='hs-conid'>LineBuffering</span>
<a name="line-53"></a> <span class='hs-layout'>(</span><span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-varid'>ans</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>saveMode</span> <span class='hs-varid'>mode</span>
<a name="line-54"></a> <span class='hs-varid'>hOut</span> <span class='hs-varid'>hin</span> <span class='hs-varid'>m</span>
<a name="line-55"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>ans</span> <span class='hs-varid'>hin</span> <span class='hs-varid'>hout</span>
<a name="line-56"></a> <span class='hs-keyword'>where</span>
<a name="line-57"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>ans</span> <span class='hs-varid'>hin</span> <span class='hs-varid'>hout</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-58"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hGetLine</span> <span class='hs-varid'>hout</span>
<a name="line-59"></a> <span class='hs-keyword'>if</span> <span class='hs-str'>"Result "</span> <span class='hs-varop'>`isPrefixOf`</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span>
<a name="line-60"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>read</span> <span class='hs-varop'>$</span> <span class='hs-varid'>drop</span> <span class='hs-num'>7</span> <span class='hs-varid'>x</span>
<a name="line-61"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>if</span> <span class='hs-str'>"Send "</span> <span class='hs-varop'>`isPrefixOf`</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-62"></a> <span class='hs-varid'>hOut</span> <span class='hs-varid'>hin</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>ans</span> <span class='hs-layout'>(</span><span class='hs-varid'>drop</span> <span class='hs-num'>5</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-63"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>ans</span> <span class='hs-varid'>hin</span> <span class='hs-varid'>hout</span>
<a name="line-64"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>if</span> <span class='hs-str'>"#"</span> <span class='hs-varop'>`isPrefixOf`</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-65"></a> <span class='hs-varid'>hOut</span> <span class='hs-varid'>stdout</span> <span class='hs-varid'>x</span>
<a name="line-66"></a> <span class='hs-varid'>loop</span> <span class='hs-varid'>ans</span> <span class='hs-varid'>hin</span> <span class='hs-varid'>hout</span>
<a name="line-67"></a> <span class='hs-keyword'>else</span>
<a name="line-68"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Unexpected message from program: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>x</span>
<a name="line-69"></a>
<a name="line-70"></a>
<a name="line-71"></a><a name="withBuffering"></a><span class='hs-definition'>withBuffering</span> <span class='hs-varid'>hndl</span> <span class='hs-varid'>mode</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bracket</span>
<a name="line-72"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span> <span class='hs-varid'>old</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hGetBuffering</span> <span class='hs-varid'>hndl</span><span class='hs-layout'>;</span> <span class='hs-varid'>hSetBuffering</span> <span class='hs-varid'>hndl</span> <span class='hs-varid'>mode</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>old</span><span class='hs-layout'>)</span>
<a name="line-73"></a> <span class='hs-layout'>(</span><span class='hs-varid'>hSetBuffering</span> <span class='hs-varid'>hndl</span><span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varid'>act</span><span class='hs-layout'>)</span>
<a name="line-75"></a>
<a name="line-76"></a>
<a name="line-77"></a><a name="Unknown"></a><span class='hs-comment'>-- | Unknown value, representing the values stored within the 'Mode' structure. While the values</span>
<a name="line-78"></a><a name="Unknown"></a><span class='hs-comment'>-- are not observable, they behave identically to the original values.</span>
<a name="line-79"></a><a name="Unknown"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Unknown</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Unknown</span> <span class='hs-layout'>{</span><span class='hs-varid'>fromUnknown</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Value</span><span class='hs-layout'>}</span> <span class='hs-comment'>-- wrap Value so the Pack instance doesn't leak</span>
<a name="line-80"></a>
<a name="line-81"></a>
<a name="line-82"></a><a name="receive"></a><span class='hs-comment'>-- | Receive information about the mode to display.</span>
<a name="line-83"></a><span class='hs-definition'>receive</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Mode</span> <span class='hs-conid'>Unknown</span><span class='hs-layout'>)</span>
<a name="line-84"></a><span class='hs-definition'>receive</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-85"></a> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getLine</span>
<a name="line-86"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>remap2</span> <span class='hs-conid'>Unknown</span> <span class='hs-varid'>fromUnknown</span> <span class='hs-varop'>$</span> <span class='hs-varid'>loadMode</span> <span class='hs-varid'>m</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>msg</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-87"></a> <span class='hs-varid'>hOut</span> <span class='hs-varid'>stdout</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Send "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>msg</span>
<a name="line-88"></a> <span class='hs-varid'>getLine</span>
<a name="line-89"></a>
<a name="line-90"></a>
<a name="line-91"></a><a name="reply"></a><span class='hs-comment'>-- | Send a reply with either an error, or a list of flags to use. This function exits the helper program.</span>
<a name="line-92"></a><span class='hs-definition'>reply</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-93"></a><span class='hs-definition'>reply</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-94"></a> <span class='hs-varid'>hOut</span> <span class='hs-varid'>stdout</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Result "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>x</span>
<a name="line-95"></a> <span class='hs-varid'>exitWith</span> <span class='hs-conid'>ExitSuccess</span>
<a name="line-96"></a>
<a name="line-97"></a>
<a name="line-98"></a><a name="comment"></a><span class='hs-comment'>-- | Send a comment which will be displayed on the calling console, mainly useful for debugging.</span>
<a name="line-99"></a><span class='hs-definition'>comment</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-conid'>()</span>
<a name="line-100"></a><span class='hs-definition'>comment</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hOut</span> <span class='hs-varid'>stdout</span> <span class='hs-varop'>$</span> <span class='hs-str'>"# "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>x</span>
<a name="line-101"></a>
<a name="line-102"></a>
<a name="line-103"></a><span class='hs-comment'>---------------------------------------------------------------------</span>
<a name="line-104"></a><span class='hs-comment'>-- IO MAP</span>
<a name="line-105"></a>
<a name="line-106"></a><a name="IOMap"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>IOMap</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IOMap</span> <span class='hs-layout'>(</span><span class='hs-conid'>IORef</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="newIOMap"></a><span class='hs-definition'>newIOMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>IOMap</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-109"></a><span class='hs-definition'>newIOMap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-conid'>IOMap</span> <span class='hs-varop'>$</span> <span class='hs-varid'>newIORef</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="addIOMap"></a><span class='hs-definition'>addIOMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IOMap</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span>
<a name="line-112"></a><span class='hs-definition'>addIOMap</span> <span class='hs-layout'>(</span><span class='hs-conid'>IOMap</span> <span class='hs-varid'>ref</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>atomicModifyIORef</span> <span class='hs-varid'>ref</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span><span class='hs-varop'>+</span><span class='hs-num'>1</span> <span class='hs-keyword'>in</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>j</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-varid'>j</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>j</span><span class='hs-layout'>)</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="getIOMap"></a><span class='hs-definition'>getIOMap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IOMap</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-115"></a><span class='hs-definition'>getIOMap</span> <span class='hs-layout'>(</span><span class='hs-conid'>IOMap</span> <span class='hs-varid'>ref</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readIORef</span> <span class='hs-varid'>ref</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromJust</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>i</span> <span class='hs-varid'>xs</span>
<a name="line-116"></a>
<a name="line-117"></a>
<a name="line-118"></a><span class='hs-comment'>---------------------------------------------------------------------</span>
<a name="line-119"></a><span class='hs-comment'>-- SERIALISE A MODE</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="Value"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Value</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Value</span> <span class='hs-conid'>Int</span>
<a name="line-122"></a>
<a name="line-123"></a>
<a name="line-124"></a><a name="toValue"></a><span class='hs-comment'>{-# NOINLINE toValue #-}</span>
<a name="line-125"></a><span class='hs-definition'>toValue</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Mode</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mode</span> <span class='hs-conid'>Value</span>
<a name="line-126"></a><span class='hs-comment'>-- fairly safe, use of a table and pointers from one process to another, but referentially transparent</span>
<a name="line-127"></a><span class='hs-definition'>toValue</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-128"></a> <span class='hs-comment'>-- the ref accumulates, so is a space leak</span>
<a name="line-129"></a> <span class='hs-comment'>-- but it will all disappear after the helper goes, so not too much of an issue</span>
<a name="line-130"></a> <span class='hs-varid'>mp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newIOMap</span>
<a name="line-131"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>embed</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-conid'>Value</span> <span class='hs-varop'>$</span> <span class='hs-varid'>addIOMap</span> <span class='hs-varid'>mp</span> <span class='hs-varid'>x</span>
<a name="line-132"></a> <span class='hs-varid'>proj</span> <span class='hs-layout'>(</span><span class='hs-conid'>Value</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getIOMap</span> <span class='hs-varid'>mp</span> <span class='hs-varid'>x</span>
<a name="line-133"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>remap2</span> <span class='hs-varid'>embed</span> <span class='hs-varid'>proj</span> <span class='hs-varid'>x</span>
<a name="line-134"></a>
<a name="line-135"></a>
<a name="line-136"></a><a name="saveMode"></a><span class='hs-definition'>saveMode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Mode</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- (value, ask questions from stdin)</span>
<a name="line-137"></a><span class='hs-definition'>saveMode</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-138"></a> <span class='hs-varid'>mp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newIOMap</span>
<a name="line-139"></a> <span class='hs-varid'>res</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>add</span> <span class='hs-varid'>mp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toValue</span> <span class='hs-varid'>m</span>
<a name="line-140"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>res</span><span class='hs-layout'>,</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>show</span> <span class='hs-varop'>.</span> <span class='hs-varid'>get</span> <span class='hs-varid'>mp</span> <span class='hs-varop'>.</span> <span class='hs-varid'>read</span><span class='hs-layout'>)</span>
<a name="line-141"></a> <span class='hs-keyword'>where</span>
<a name="line-142"></a> <span class='hs-varid'>add</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IOMap</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Pack</span>
<a name="line-143"></a> <span class='hs-varid'>add</span> <span class='hs-varid'>mp</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>transformM</span> <span class='hs-varid'>x</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-144"></a> <span class='hs-conid'>Func</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoShow</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>addIOMap</span> <span class='hs-varid'>mp</span> <span class='hs-varid'>f</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>FuncId</span> <span class='hs-varid'>i</span>
<a name="line-145"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-146"></a>
<a name="line-147"></a> <span class='hs-varid'>get</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IOMap</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span><span class='hs-conid'>Pack</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Pack</span>
<a name="line-148"></a> <span class='hs-varid'>get</span> <span class='hs-varid'>mp</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-149"></a> <span class='hs-varid'>f</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getIOMap</span> <span class='hs-varid'>mp</span> <span class='hs-varid'>i</span>
<a name="line-150"></a> <span class='hs-varid'>add</span> <span class='hs-varid'>mp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span>
<a name="line-151"></a>
<a name="line-152"></a>
<a name="line-153"></a><a name="loadMode"></a><span class='hs-definition'>loadMode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mode</span> <span class='hs-conid'>Value</span> <span class='hs-comment'>-- given serialised, question asker, give me a value</span>
<a name="line-154"></a><span class='hs-definition'>loadMode</span> <span class='hs-varid'>x</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>rep</span> <span class='hs-varop'>$</span> <span class='hs-varid'>read</span> <span class='hs-varid'>x</span>
<a name="line-155"></a> <span class='hs-keyword'>where</span>
<a name="line-156"></a> <span class='hs-varid'>rep</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span>
<a name="line-157"></a> <span class='hs-varid'>rep</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>transform</span> <span class='hs-varid'>x</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-158"></a> <span class='hs-conid'>FuncId</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Func</span> <span class='hs-varop'>$</span> <span class='hs-conid'>NoShow</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>rep</span> <span class='hs-varop'>$</span> <span class='hs-varid'>read</span> <span class='hs-varop'>$</span> <span class='hs-varid'>f</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span><span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-159"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>x</span>
<a name="line-160"></a>
<a name="line-161"></a>
<a name="line-162"></a><span class='hs-comment'>-- Support data types</span>
<a name="line-163"></a>
<a name="line-164"></a><a name="Pack"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>Pack</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-165"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>List</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Pack</span><span class='hs-keyglyph'>]</span>
<a name="line-166"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Char</span> <span class='hs-conid'>Char</span>
<a name="line-167"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Int</span> <span class='hs-conid'>Int</span>
<a name="line-168"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Func</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoShow</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-169"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>FuncId</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Never passed to pack/unpack, always transfromed away by saveMode/loadMode</span>
<a name="line-170"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>String</span> <span class='hs-conid'>String</span>
<a name="line-171"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>None</span> <span class='hs-comment'>-- ^ Never generated, only used for reading in bad cases</span>
<a name="line-172"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span><span class='hs-conid'>Read</span><span class='hs-layout'>)</span>
<a name="line-173"></a>
<a name="line-174"></a><a name="NoShow"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>NoShow</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NoShow</span> <span class='hs-varid'>a</span>
<a name="line-175"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Show</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoShow</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <span class='hs-comment'>-- deliberately leave the methods unimplemented</span>
<a name="line-176"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Read</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoShow</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <span class='hs-comment'>-- deliberately leave the methods unimplemented</span>
<a name="line-177"></a>
<a name="line-178"></a>
<a name="line-179"></a><a name="transformM"></a><span class='hs-definition'>transformM</span><span class='hs-layout'>,</span> <span class='hs-varid'>descendM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>Pack</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>Pack</span>
<a name="line-180"></a><span class='hs-definition'>transformM</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varop'>=<<</span> <span class='hs-varid'>descendM</span> <span class='hs-layout'>(</span><span class='hs-varid'>transformM</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span>
<a name="line-181"></a><a name="descendM"></a><span class='hs-definition'>descendM</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</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'>uniplate</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>in</span> <span class='hs-varid'>liftM</span> <span class='hs-varid'>b</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-182"></a>
<a name="line-183"></a><a name="transform"></a><span class='hs-definition'>transform</span><span class='hs-layout'>,</span> <span class='hs-varid'>descend</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span>
<a name="line-184"></a><span class='hs-definition'>transform</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>descend</span> <span class='hs-layout'>(</span><span class='hs-varid'>transform</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-185"></a><a name="descend"></a><span class='hs-definition'>descend</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uniplate</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>in</span> <span class='hs-varid'>b</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-186"></a>
<a name="line-187"></a><a name="uniplate"></a><span class='hs-definition'>uniplate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Pack</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Pack</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span><span class='hs-layout'>)</span>
<a name="line-188"></a><span class='hs-definition'>uniplate</span> <span class='hs-layout'>(</span><span class='hs-conid'>List</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-conid'>List</span><span class='hs-layout'>)</span>
<a name="line-189"></a><span class='hs-definition'>uniplate</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ctor</span> <span class='hs-varid'>x</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-varid'>map</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>ys</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ctor</span> <span class='hs-varid'>x</span> <span class='hs-varop'>.</span> <span class='hs-varid'>zip</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><span class='hs-layout'>)</span>
<a name="line-190"></a><span class='hs-definition'>uniplate</span> <span class='hs-varid'>x</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'>const</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-191"></a>
<a name="line-192"></a>
<a name="line-193"></a><a name="Packer"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-194"></a> <span class='hs-varid'>pack</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pack</span>
<a name="line-195"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Pack</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-196"></a>
<a name="line-197"></a><a name="add"></a><span class='hs-definition'>add</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>pack</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-198"></a><a name="ctor"></a><span class='hs-definition'>ctor</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ctor</span> <span class='hs-varid'>y</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <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'>xs</span>
<a name="line-199"></a><span class='hs-definition'>ctor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-200"></a><a name="get"></a><span class='hs-definition'>get</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-conid'>None</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span>
<a name="line-201"></a>
<a name="line-202"></a>
<a name="line-203"></a><span class='hs-comment'>-- General instances</span>
<a name="line-204"></a>
<a name="line-205"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>where</span>
<a name="line-206"></a> <span class='hs-varid'>pack</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ys</span> <span class='hs-varop'>==</span> <span class='hs-varid'>length</span> <span class='hs-varid'>zs</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>String</span> <span class='hs-varid'>zs</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>List</span> <span class='hs-varid'>ys</span>
<a name="line-207"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>pack</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-208"></a> <span class='hs-varid'>zs</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'>Char</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ys</span><span class='hs-keyglyph'>]</span>
<a name="line-209"></a>
<a name="line-210"></a> <span class='hs-varid'>unpack</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpack</span> <span class='hs-varop'>$</span> <span class='hs-conid'>List</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>xs</span>
<a name="line-211"></a> <span class='hs-varid'>unpack</span> <span class='hs-layout'>(</span><span class='hs-conid'>List</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>unpack</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-212"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-213"></a>
<a name="line-214"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-215"></a> <span class='hs-varid'>pack</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Func</span> <span class='hs-varop'>$</span> <span class='hs-conid'>NoShow</span> <span class='hs-varop'>$</span> <span class='hs-varid'>pack</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unpack</span>
<a name="line-216"></a> <span class='hs-varid'>unpack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Func</span> <span class='hs-layout'>(</span><span class='hs-conid'>NoShow</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpack</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>pack</span>
<a name="line-217"></a>
<a name="line-218"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-conid'>Value</span> <span class='hs-keyword'>where</span>
<a name="line-219"></a> <span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Value</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pack</span> <span class='hs-varid'>x</span>
<a name="line-220"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Value</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span>
<a name="line-221"></a>
<a name="line-222"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-conid'>Char</span> <span class='hs-keyword'>where</span>
<a name="line-223"></a> <span class='hs-varid'>pack</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Char</span>
<a name="line-224"></a> <span class='hs-varid'>unpack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Char</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-225"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-chr'>' '</span>
<a name="line-226"></a>
<a name="line-227"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-conid'>Int</span> <span class='hs-keyword'>where</span>
<a name="line-228"></a> <span class='hs-varid'>pack</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-229"></a> <span class='hs-varid'>unpack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-230"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span><span class='hs-num'>1</span>
<a name="line-231"></a>
<a name="line-232"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</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-keyword'>where</span>
<a name="line-233"></a> <span class='hs-varid'>pack</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-conid'>Ctor</span> <span class='hs-str'>"(,)"</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"fst"</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>add</span> <span class='hs-str'>"snd"</span> <span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span>
<a name="line-234"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>get</span> <span class='hs-str'>"fst"</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-varid'>get</span> <span class='hs-str'>"snd"</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-235"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"(,)"</span> <span class='hs-varid'>x</span>
<a name="line-236"></a>
<a name="line-237"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-238"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"Nothing"</span> <span class='hs-conid'>[]</span>
<a name="line-239"></a> <span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"Just"</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"fromJust"</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-240"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Ctor</span> <span class='hs-str'>"Just"</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>get</span> <span class='hs-str'>"fromJust"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"Just"</span> <span class='hs-varid'>x</span>
<a name="line-241"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-242"></a>
<a name="line-243"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-layout'>(</span><span class='hs-conid'>Either</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-244"></a> <span class='hs-varid'>pack</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'>Ctor</span> <span class='hs-str'>"Left"</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"fromLeft"</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-245"></a> <span class='hs-varid'>pack</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-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"Right"</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"fromRight"</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-246"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Ctor</span> <span class='hs-str'>"Left"</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-varid'>get</span> <span class='hs-str'>"fromLeft"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"Left"</span> <span class='hs-varid'>x</span>
<a name="line-247"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Ctor</span> <span class='hs-str'>"Right"</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span> <span class='hs-varid'>get</span> <span class='hs-str'>"fromRight"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"Right"</span> <span class='hs-varid'>x</span>
<a name="line-248"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unpack</span> <span class='hs-conid'>None</span>
<a name="line-249"></a>
<a name="line-250"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-conid'>Bool</span> <span class='hs-keyword'>where</span>
<a name="line-251"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"True"</span> <span class='hs-conid'>[]</span>
<a name="line-252"></a> <span class='hs-varid'>pack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"False"</span> <span class='hs-conid'>[]</span>
<a name="line-253"></a> <span class='hs-varid'>unpack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ctor</span> <span class='hs-str'>"True"</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-254"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-255"></a>
<a name="line-256"></a>
<a name="line-257"></a><span class='hs-comment'>-- CmdArgs specific</span>
<a name="line-258"></a>
<a name="line-259"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-layout'>(</span><span class='hs-conid'>Group</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-260"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>Group</span><span class='hs-layout'>{</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"Group"</span>
<a name="line-261"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"groupUnnamed"</span> <span class='hs-varid'>groupUnnamed</span>
<a name="line-262"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"groupHidden"</span> <span class='hs-varid'>groupHidden</span>
<a name="line-263"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"groupNamed"</span> <span class='hs-varid'>groupNamed</span><span class='hs-keyglyph'>]</span>
<a name="line-264"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"Group"</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>in</span> <span class='hs-conid'>Group</span>
<a name="line-265"></a> <span class='hs-layout'>{</span><span class='hs-varid'>groupUnnamed</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"groupUnnamed"</span> <span class='hs-varid'>y</span>
<a name="line-266"></a> <span class='hs-layout'>,</span><span class='hs-varid'>groupHidden</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"groupHidden"</span> <span class='hs-varid'>y</span>
<a name="line-267"></a> <span class='hs-layout'>,</span><span class='hs-varid'>groupNamed</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"groupNamed"</span> <span class='hs-varid'>y</span><span class='hs-layout'>}</span>
<a name="line-268"></a>
<a name="line-269"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-layout'>(</span><span class='hs-conid'>Mode</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-270"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>Mode</span><span class='hs-layout'>{</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"Mode"</span>
<a name="line-271"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeGroupModes"</span> <span class='hs-varid'>modeGroupModes</span>
<a name="line-272"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeNames"</span> <span class='hs-varid'>modeNames</span>
<a name="line-273"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeHelp"</span> <span class='hs-varid'>modeHelp</span>
<a name="line-274"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeHelpSuffix"</span> <span class='hs-varid'>modeHelpSuffix</span>
<a name="line-275"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeArgs"</span> <span class='hs-varid'>modeArgs</span>
<a name="line-276"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeGroupFlags"</span> <span class='hs-varid'>modeGroupFlags</span>
<a name="line-277"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeValue"</span> <span class='hs-varid'>modeValue</span>
<a name="line-278"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeCheck"</span> <span class='hs-varid'>modeCheck</span>
<a name="line-279"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"modeReform"</span> <span class='hs-varid'>modeReform</span><span class='hs-keyglyph'>]</span>
<a name="line-280"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"Mode"</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>in</span> <span class='hs-conid'>Mode</span>
<a name="line-281"></a> <span class='hs-layout'>{</span><span class='hs-varid'>modeGroupModes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeGroupModes"</span> <span class='hs-varid'>y</span>
<a name="line-282"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeNames</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeNames"</span> <span class='hs-varid'>y</span>
<a name="line-283"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeHelp"</span> <span class='hs-varid'>y</span>
<a name="line-284"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeHelpSuffix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeHelpSuffix"</span> <span class='hs-varid'>y</span>
<a name="line-285"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeArgs"</span> <span class='hs-varid'>y</span>
<a name="line-286"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeGroupFlags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeGroupFlags"</span> <span class='hs-varid'>y</span>
<a name="line-287"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeValue</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeValue"</span> <span class='hs-varid'>y</span>
<a name="line-288"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeCheck</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeCheck"</span> <span class='hs-varid'>y</span>
<a name="line-289"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modeReform</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"modeReform"</span> <span class='hs-varid'>y</span><span class='hs-layout'>}</span>
<a name="line-290"></a>
<a name="line-291"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-layout'>(</span><span class='hs-conid'>Flag</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-292"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>Flag</span><span class='hs-layout'>{</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"Flag"</span>
<a name="line-293"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"flagNames"</span> <span class='hs-varid'>flagNames</span>
<a name="line-294"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"flagInfo"</span> <span class='hs-varid'>flagInfo</span>
<a name="line-295"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"flagType"</span> <span class='hs-varid'>flagType</span>
<a name="line-296"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"flagHelp"</span> <span class='hs-varid'>flagHelp</span>
<a name="line-297"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"flagValue"</span> <span class='hs-varid'>flagValue</span><span class='hs-keyglyph'>]</span>
<a name="line-298"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"Flag"</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>in</span> <span class='hs-conid'>Flag</span>
<a name="line-299"></a> <span class='hs-layout'>{</span><span class='hs-varid'>flagNames</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"flagNames"</span> <span class='hs-varid'>y</span>
<a name="line-300"></a> <span class='hs-layout'>,</span><span class='hs-varid'>flagInfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"flagInfo"</span> <span class='hs-varid'>y</span>
<a name="line-301"></a> <span class='hs-layout'>,</span><span class='hs-varid'>flagType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"flagType"</span> <span class='hs-varid'>y</span>
<a name="line-302"></a> <span class='hs-layout'>,</span><span class='hs-varid'>flagHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"flagHelp"</span> <span class='hs-varid'>y</span>
<a name="line-303"></a> <span class='hs-layout'>,</span><span class='hs-varid'>flagValue</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"flagValue"</span> <span class='hs-varid'>y</span><span class='hs-layout'>}</span>
<a name="line-304"></a>
<a name="line-305"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Packer</span> <span class='hs-layout'>(</span><span class='hs-conid'>Arg</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-306"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>Arg</span><span class='hs-layout'>{</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"Arg"</span>
<a name="line-307"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"argType"</span> <span class='hs-varid'>argType</span>
<a name="line-308"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"argRequire"</span> <span class='hs-varid'>argRequire</span>
<a name="line-309"></a> <span class='hs-layout'>,</span><span class='hs-varid'>add</span> <span class='hs-str'>"argValue"</span> <span class='hs-varid'>argValue</span><span class='hs-keyglyph'>]</span>
<a name="line-310"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ctor</span> <span class='hs-str'>"Arg"</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>in</span> <span class='hs-conid'>Arg</span>
<a name="line-311"></a> <span class='hs-layout'>{</span><span class='hs-varid'>argType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"argType"</span> <span class='hs-varid'>y</span>
<a name="line-312"></a> <span class='hs-layout'>,</span><span class='hs-varid'>argRequire</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"argRequire"</span> <span class='hs-varid'>y</span>
<a name="line-313"></a> <span class='hs-layout'>,</span><span class='hs-varid'>argValue</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>get</span> <span class='hs-str'>"argValue"</span> <span class='hs-varid'>y</span><span class='hs-layout'>}</span>
<a name="line-314"></a>
<a name="line-315"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Packer</span> <span class='hs-conid'>FlagInfo</span> <span class='hs-keyword'>where</span>
<a name="line-316"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>FlagReq</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"FlagReq"</span> <span class='hs-conid'>[]</span>
<a name="line-317"></a> <span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-conid'>FlagOpt</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"FlagOpt"</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"fromFlagOpt"</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-318"></a> <span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-conid'>FlagOptRare</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"FlagOptRare"</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>add</span> <span class='hs-str'>"fromFlagOpt"</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-319"></a> <span class='hs-varid'>pack</span> <span class='hs-conid'>FlagNone</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ctor</span> <span class='hs-str'>"FlagNone"</span> <span class='hs-conid'>[]</span>
<a name="line-320"></a> <span class='hs-varid'>unpack</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Ctor</span> <span class='hs-varid'>name</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>name</span> <span class='hs-keyword'>of</span>
<a name="line-321"></a> <span class='hs-str'>"FlagReq"</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FlagReq</span>
<a name="line-322"></a> <span class='hs-str'>"FlagOpt"</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FlagOpt</span> <span class='hs-varop'>$</span> <span class='hs-varid'>get</span> <span class='hs-str'>"fromFlagOpt"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctor</span> <span class='hs-varid'>name</span> <span class='hs-varid'>x</span>
<a name="line-323"></a> <span class='hs-str'>"FlagOptRare"</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FlagOpt</span> <span class='hs-varop'>$</span> <span class='hs-varid'>get</span> <span class='hs-str'>"fromFlagOpt"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctor</span> <span class='hs-varid'>name</span> <span class='hs-varid'>x</span>
<a name="line-324"></a> <span class='hs-varid'>unpack</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FlagNone</span>
</pre></body>
</html>
distrib
>
Fedora
>
17
>
i386
>
media
>
updates
>
by-pkgid
>
a754cb499dfee5e1f453d3b6cc13d4c8
>
files
>
153
