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<pre><a name="line-1"></a><span class='hs-comment'>{-
<a name="line-2"></a>Copyright (C) 2004-2008 John Goerzen <jgoerzen@complete.org>
<a name="line-3"></a>
<a name="line-4"></a>This program is free software; you can redistribute it and/or modify
<a name="line-5"></a>it under the terms of the GNU Lesser General Public License as published by
<a name="line-6"></a>the Free Software Foundation; either version 2.1 of the License, or
<a name="line-7"></a>(at your option) any later version.
<a name="line-8"></a>
<a name="line-9"></a>This program is distributed in the hope that it will be useful,
<a name="line-10"></a>but WITHOUT ANY WARRANTY; without even the implied warranty of
<a name="line-11"></a>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<a name="line-12"></a>GNU Lesser General Public License for more details.
<a name="line-13"></a>
<a name="line-14"></a>You should have received a copy of the GNU Lesser General Public License
<a name="line-15"></a>along with this program; if not, write to the Free Software
<a name="line-16"></a>Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
<a name="line-17"></a>-}</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-comment'>{- |
<a name="line-20"></a> Module : Data.ConfigFile.Parser
<a name="line-21"></a> Copyright : Copyright (C) 2004-2008 John Goerzen
<a name="line-22"></a> License : GNU LGPL, version 2.1 or above
<a name="line-23"></a>
<a name="line-24"></a> Maintainer : John Goerzen <jgoerzen@complete.org>
<a name="line-25"></a> Stability : provisional
<a name="line-26"></a> Portability: portable
<a name="line-27"></a>
<a name="line-28"></a>Parser support for "Data.ConfigFile". This module is not intended to be
<a name="line-29"></a>used directly by your programs.
<a name="line-30"></a>
<a name="line-31"></a>Copyright (c) 2004-2008 John Goerzen, jgoerzen\@complete.org
<a name="line-32"></a>-}</span>
<a name="line-33"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ConfigFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Parser</span>
<a name="line-34"></a><span class='hs-layout'>(</span>
<a name="line-35"></a> <span class='hs-varid'>parse_string</span><span class='hs-layout'>,</span> <span class='hs-varid'>parse_file</span><span class='hs-layout'>,</span> <span class='hs-varid'>parse_handle</span><span class='hs-layout'>,</span> <span class='hs-varid'>interpmain</span><span class='hs-layout'>,</span> <span class='hs-conid'>ParseOutput</span>
<a name="line-36"></a> <span class='hs-varop'>--satisfyG,</span>
<a name="line-37"></a> <span class='hs-varop'>--main</span>
<a name="line-38"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span>
<a name="line-40"></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><span class='hs-layout'>(</span><span class='hs-varid'>throwError</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadError</span><span class='hs-layout'>)</span>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ConfigFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Lexer</span>
<a name="line-43"></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-layout'>(</span><span class='hs-conid'>Handle</span><span class='hs-layout'>,</span> <span class='hs-varid'>hGetContents</span><span class='hs-layout'>)</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span>
<a name="line-45"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ConfigFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-48"></a><span class='hs-comment'>-- Exported funcs</span>
<a name="line-49"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-50"></a>
<a name="line-51"></a><a name="parse_string"></a><span class='hs-definition'>parse_string</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span>
<a name="line-52"></a> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ParseOutput</span>
<a name="line-53"></a><span class='hs-definition'>parse_string</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span>
<a name="line-54"></a> <span class='hs-varid'>detokenize</span> <span class='hs-str'>"(string)"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>parse</span> <span class='hs-varid'>loken</span> <span class='hs-str'>"(string)"</span> <span class='hs-varid'>s</span>
<a name="line-55"></a>
<a name="line-56"></a><a name="parse_file"></a><span class='hs-comment'>--parse_file :: FilePath -> IO (CPResult ParseOutput)</span>
<a name="line-57"></a><span class='hs-definition'>parse_file</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-conid'>ParseOutput</span><span class='hs-layout'>)</span>
<a name="line-58"></a><span class='hs-definition'>parse_file</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span>
<a name="line-59"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>o</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>parseFromFile</span> <span class='hs-varid'>loken</span> <span class='hs-varid'>f</span>
<a name="line-60"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>detokenize</span> <span class='hs-varid'>f</span> <span class='hs-varid'>o</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="parse_handle"></a><span class='hs-comment'>--parse_handle :: Handle -> IO (CPResult ParseOutput)</span>
<a name="line-63"></a><span class='hs-definition'>parse_handle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadError</span> <span class='hs-conid'>CPError</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Handle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-conid'>ParseOutput</span><span class='hs-layout'>)</span>
<a name="line-64"></a><span class='hs-definition'>parse_handle</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span>
<a name="line-65"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hGetContents</span> <span class='hs-varid'>h</span>
<a name="line-66"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>o</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parse</span> <span class='hs-varid'>loken</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-67"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>detokenize</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-varid'>o</span>
<a name="line-68"></a>
<a name="line-69"></a><a name="detokenize"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-70"></a><span class='hs-comment'>-- Private funcs</span>
<a name="line-71"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-72"></a><span class='hs-definition'>detokenize</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadError</span> <span class='hs-layout'>(</span><span class='hs-conid'>CPErrorData</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>SourceName</span>
<a name="line-73"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>GeneralizedToken</span> <span class='hs-conid'>CPTok</span><span class='hs-keyglyph'>]</span>
<a name="line-74"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ParseOutput</span>
<a name="line-75"></a><span class='hs-definition'>detokenize</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span>
<a name="line-76"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>conv</span> <span class='hs-varid'>msg</span> <span class='hs-layout'>(</span><span class='hs-conid'>Left</span> <span class='hs-varid'>err</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>throwError</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-conid'>ParseError</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>err</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>msg</span><span class='hs-layout'>)</span>
<a name="line-77"></a> <span class='hs-varid'>conv</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Right</span> <span class='hs-varid'>val</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>val</span>
<a name="line-78"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>conv</span> <span class='hs-str'>"lexer"</span> <span class='hs-varid'>l</span>
<a name="line-79"></a> <span class='hs-varid'>conv</span> <span class='hs-str'>"parser"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>runParser</span> <span class='hs-varid'>main</span> <span class='hs-conid'>()</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>r</span>
<a name="line-80"></a>
<a name="line-81"></a><a name="main"></a><span class='hs-definition'>main</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GeneralizedTokenParser</span> <span class='hs-conid'>CPTok</span> <span class='hs-conid'>()</span> <span class='hs-conid'>ParseOutput</span>
<a name="line-82"></a><span class='hs-definition'>main</span> <span class='hs-keyglyph'>=</span>
<a name="line-83"></a> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sectionlist</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span><span class='hs-layout'>}</span>
<a name="line-84"></a> <span class='hs-varop'><|></span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span>
<a name="line-85"></a> <span class='hs-varid'>o</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optionlist</span>
<a name="line-86"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sectionlist</span>
<a name="line-87"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-str'>"DEFAULT"</span><span class='hs-layout'>,</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>s</span>
<a name="line-88"></a> <span class='hs-layout'>)</span>
<a name="line-89"></a> <span class='hs-varop'><|></span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>o</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optionlist</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>"DEFAULT"</span><span class='hs-layout'>,</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span>
<a name="line-90"></a> <span class='hs-varop'><?></span> <span class='hs-str'>"Error parsing config file tokens"</span>
<a name="line-91"></a>
<a name="line-92"></a><a name="sectionlist"></a><span class='hs-definition'>sectionlist</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GeneralizedTokenParser</span> <span class='hs-conid'>CPTok</span> <span class='hs-conid'>()</span> <span class='hs-conid'>ParseOutput</span>
<a name="line-93"></a><span class='hs-definition'>sectionlist</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>eof</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span><span class='hs-layout'>}</span>
<a name="line-94"></a> <span class='hs-varop'><|></span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span>
<a name="line-95"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sectionhead</span>
<a name="line-96"></a> <span class='hs-varid'>eof</span>
<a name="line-97"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-98"></a> <span class='hs-layout'>)</span>
<a name="line-99"></a> <span class='hs-varop'><|></span> <span class='hs-keyword'>do</span>
<a name="line-100"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>section</span>
<a name="line-101"></a> <span class='hs-varid'>sl</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sectionlist</span>
<a name="line-102"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-conop'>:</span> <span class='hs-varid'>sl</span><span class='hs-layout'>)</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="section"></a><span class='hs-definition'>section</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GeneralizedTokenParser</span> <span class='hs-conid'>CPTok</span> <span class='hs-conid'>()</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</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'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-105"></a><span class='hs-definition'>section</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>sh</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sectionhead</span><span class='hs-layout'>;</span> <span class='hs-varid'>ol</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optionlist</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>sh</span><span class='hs-layout'>,</span> <span class='hs-varid'>ol</span><span class='hs-layout'>)</span><span class='hs-layout'>}</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="sectionhead"></a><span class='hs-definition'>sectionhead</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GeneralizedTokenParser</span> <span class='hs-conid'>CPTok</span> <span class='hs-conid'>()</span> <span class='hs-conid'>String</span>
<a name="line-108"></a><span class='hs-definition'>sectionhead</span> <span class='hs-keyglyph'>=</span>
<a name="line-109"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>wf</span> <span class='hs-layout'>(</span><span class='hs-conid'>NEWSECTION</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span>
<a name="line-110"></a> <span class='hs-varid'>wf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-111"></a> <span class='hs-keyword'>in</span>
<a name="line-112"></a> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>tokeng</span> <span class='hs-varid'>wf</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>strip</span> <span class='hs-varid'>s</span><span class='hs-layout'>}</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="optionlist"></a><span class='hs-definition'>optionlist</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GeneralizedTokenParser</span> <span class='hs-conid'>CPTok</span> <span class='hs-conid'>()</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'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-115"></a><span class='hs-definition'>optionlist</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>many1</span> <span class='hs-varid'>coption</span>
<a name="line-116"></a>
<a name="line-117"></a><a name="coption"></a><span class='hs-definition'>coption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GeneralizedTokenParser</span> <span class='hs-conid'>CPTok</span> <span class='hs-conid'>()</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-layout'>)</span>
<a name="line-118"></a><span class='hs-definition'>coption</span> <span class='hs-keyglyph'>=</span>
<a name="line-119"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>wf</span> <span class='hs-layout'>(</span><span class='hs-conid'>NEWOPTION</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span>
<a name="line-120"></a> <span class='hs-varid'>wf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-121"></a> <span class='hs-varid'>wfx</span> <span class='hs-layout'>(</span><span class='hs-conid'>EXTENSIONLINE</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>x</span>
<a name="line-122"></a> <span class='hs-varid'>wfx</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-123"></a> <span class='hs-keyword'>in</span>
<a name="line-124"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>o</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>tokeng</span> <span class='hs-varid'>wf</span>
<a name="line-125"></a> <span class='hs-varid'>l</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tokeng</span> <span class='hs-varid'>wfx</span>
<a name="line-126"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>strip</span> <span class='hs-layout'>(</span><span class='hs-varid'>fst</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>valmerge</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>snd</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-127"></a>
<a name="line-128"></a><a name="valmerge"></a><span class='hs-definition'>valmerge</span> <span class='hs-keyglyph'>::</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'>String</span>
<a name="line-129"></a><span class='hs-definition'>valmerge</span> <span class='hs-varid'>vallist</span> <span class='hs-keyglyph'>=</span>
<a name="line-130"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>vl2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>strip</span> <span class='hs-varid'>vallist</span>
<a name="line-131"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>join</span> <span class='hs-str'>"\n"</span> <span class='hs-varid'>vl2</span>
<a name="line-132"></a>
<a name="line-133"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-134"></a><span class='hs-comment'>-- Interpolation</span>
<a name="line-135"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-136"></a>
<a name="line-137"></a><a name="interpval"></a><span class='hs-definition'>interpval</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-138"></a><span class='hs-definition'>interpval</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-139"></a> <span class='hs-varid'>string</span> <span class='hs-str'>"%("</span>
<a name="line-140"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varid'>many1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>")"</span><span class='hs-layout'>)</span> <span class='hs-varop'><?></span> <span class='hs-str'>"interpolation name"</span>
<a name="line-141"></a> <span class='hs-varid'>string</span> <span class='hs-str'>")s"</span> <span class='hs-varop'><?></span> <span class='hs-str'>"end of interpolation name"</span>
<a name="line-142"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>s</span>
<a name="line-143"></a>
<a name="line-144"></a><a name="percentval"></a><span class='hs-definition'>percentval</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-145"></a><span class='hs-definition'>percentval</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-146"></a> <span class='hs-varid'>string</span> <span class='hs-str'>"%%"</span>
<a name="line-147"></a> <span class='hs-varid'>return</span> <span class='hs-str'>"%"</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="interpother"></a><span class='hs-definition'>interpother</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-150"></a><span class='hs-definition'>interpother</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-151"></a> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"%"</span>
<a name="line-152"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-153"></a>
<a name="line-154"></a><a name="interptok"></a><span class='hs-definition'>interptok</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'>Either</span> <span class='hs-conid'>CPError</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-155"></a><span class='hs-definition'>interptok</span> <span class='hs-varid'>lookupfunc</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>try</span> <span class='hs-varid'>percentval</span><span class='hs-layout'>)</span>
<a name="line-156"></a> <span class='hs-varop'><|></span> <span class='hs-varid'>interpother</span>
<a name="line-157"></a> <span class='hs-varop'><|></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>interpval</span>
<a name="line-158"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>lookupfunc</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-159"></a> <span class='hs-conid'>Left</span> <span class='hs-layout'>(</span><span class='hs-conid'>InterpolationError</span> <span class='hs-varid'>x</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'>fail</span> <span class='hs-varid'>x</span>
<a name="line-160"></a> <span class='hs-conid'>Left</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"unresolvable interpolation reference to \""</span> <span class='hs-varop'>++</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\""</span>
<a name="line-161"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-162"></a>
<a name="line-163"></a>
<a name="line-164"></a><a name="interpmain"></a><span class='hs-definition'>interpmain</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>CPError</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-165"></a><span class='hs-definition'>interpmain</span> <span class='hs-varid'>lookupfunc</span> <span class='hs-keyglyph'>=</span>
<a name="line-166"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>manyTill</span> <span class='hs-layout'>(</span><span class='hs-varid'>interptok</span> <span class='hs-varid'>lookupfunc</span><span class='hs-layout'>)</span> <span class='hs-varid'>eof</span>
<a name="line-167"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>concat</span> <span class='hs-varid'>r</span>
</pre></body>
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