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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE GeneralizedNewtypeDeriving #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-
<a name="line-3"></a>Copyright (C) 2010 John MacFarlane <jgm@berkeley.edu>
<a name="line-4"></a>
<a name="line-5"></a>This program is free software; you can redistribute it and/or modify
<a name="line-6"></a>it under the terms of the GNU General Public License as published by
<a name="line-7"></a>the Free Software Foundation; either version 2 of the License, or
<a name="line-8"></a>(at your option) any later version.
<a name="line-9"></a>
<a name="line-10"></a>This program is distributed in the hope that it will be useful,
<a name="line-11"></a>but WITHOUT ANY WARRANTY; without even the implied warranty of
<a name="line-12"></a>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<a name="line-13"></a>GNU General Public License for more details.
<a name="line-14"></a>
<a name="line-15"></a>You should have received a copy of the GNU General Public License
<a name="line-16"></a>along with this program; if not, write to the Free Software
<a name="line-17"></a>Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111(-1)307 USA
<a name="line-18"></a>-}</span>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-comment'>{- |
<a name="line-21"></a> Module : Text.Pandoc.Pretty
<a name="line-22"></a> Copyright : Copyright (C) 2010 John MacFarlane
<a name="line-23"></a> License : GNU GPL, version 2 or above
<a name="line-24"></a>
<a name="line-25"></a> Maintainer : John MacFarlane <jgm@berkeley.edu>
<a name="line-26"></a> Stability : alpha
<a name="line-27"></a> Portability : portable
<a name="line-28"></a>
<a name="line-29"></a>A prettyprinting library for the production of text documents,
<a name="line-30"></a>including wrapped text, indentated blocks, and tables.
<a name="line-31"></a>-}</span>
<a name="line-32"></a>
<a name="line-33"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Pandoc</span><span class='hs-varop'>.</span><span class='hs-conid'>Pretty</span> <span class='hs-layout'>(</span>
<a name="line-34"></a> <span class='hs-conid'>Doc</span>
<a name="line-35"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>render</span>
<a name="line-36"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>cr</span>
<a name="line-37"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>blankline</span>
<a name="line-38"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>space</span>
<a name="line-39"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>text</span>
<a name="line-40"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>char</span>
<a name="line-41"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prefixed</span>
<a name="line-42"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>flush</span>
<a name="line-43"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>nest</span>
<a name="line-44"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hang</span>
<a name="line-45"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>nowrap</span>
<a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>offset</span>
<a name="line-47"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>height</span>
<a name="line-48"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>lblock</span>
<a name="line-49"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>cblock</span>
<a name="line-50"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rblock</span>
<a name="line-51"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'><></span><span class='hs-layout'>)</span>
<a name="line-52"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'><+></span><span class='hs-layout'>)</span>
<a name="line-53"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>$$</span><span class='hs-layout'>)</span>
<a name="line-54"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>$+$</span><span class='hs-layout'>)</span>
<a name="line-55"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isEmpty</span>
<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>empty</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>cat</span>
<a name="line-58"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hcat</span>
<a name="line-59"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hsep</span>
<a name="line-60"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>vcat</span>
<a name="line-61"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>vsep</span>
<a name="line-62"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inside</span>
<a name="line-63"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>braces</span>
<a name="line-64"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>brackets</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>parens</span>
<a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>quotes</span>
<a name="line-67"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>doubleQuotes</span>
<a name="line-68"></a> <span class='hs-layout'>)</span>
<a name="line-69"></a>
<a name="line-70"></a><span class='hs-keyword'>where</span>
<a name="line-71"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>DList</span> <span class='hs-layout'>(</span><span class='hs-conid'>DList</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromList</span><span class='hs-layout'>,</span> <span class='hs-varid'>toList</span><span class='hs-layout'>,</span> <span class='hs-varid'>cons</span><span class='hs-layout'>,</span> <span class='hs-varid'>singleton</span><span class='hs-layout'>)</span>
<a name="line-72"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>intercalate</span><span class='hs-layout'>)</span>
<a name="line-73"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span>
<a name="line-74"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span>
<a name="line-75"></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'>State</span>
<a name="line-76"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <span class='hs-layout'>(</span><span class='hs-varid'>isSpace</span><span class='hs-layout'>)</span>
<a name="line-77"></a>
<a name="line-78"></a><a name="RenderState"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Monoid</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span>
<a name="line-79"></a> <span class='hs-conid'>RenderState</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RenderState</span><span class='hs-layout'>{</span>
<a name="line-80"></a> <span class='hs-varid'>output</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ In reverse order</span>
<a name="line-81"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prefix</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-82"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>usePrefix</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span>
<a name="line-83"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>lineLength</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ 'Nothing' means no wrapping</span>
<a name="line-84"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-85"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newlines</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Number of preceding newlines</span>
<a name="line-86"></a> <span class='hs-layout'>}</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="DocState"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>DocState</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>State</span> <span class='hs-layout'>(</span><span class='hs-conid'>RenderState</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-conid'>()</span>
<a name="line-89"></a>
<a name="line-90"></a><a name="D"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>D</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Text</span> <span class='hs-conid'>Int</span> <span class='hs-conid'>String</span>
<a name="line-91"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Block</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-92"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Prefixed</span> <span class='hs-conid'>String</span> <span class='hs-conid'>Doc</span>
<a name="line-93"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Flush</span> <span class='hs-conid'>Doc</span>
<a name="line-94"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BreakingSpace</span>
<a name="line-95"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CarriageReturn</span>
<a name="line-96"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NewLine</span>
<a name="line-97"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BlankLine</span>
<a name="line-98"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="Doc"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-layout'>{</span> <span class='hs-varid'>unDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DList</span> <span class='hs-conid'>D</span> <span class='hs-layout'>}</span>
<a name="line-101"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monoid</span><span class='hs-layout'>)</span>
<a name="line-102"></a>
<a name="line-103"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Show</span> <span class='hs-conid'>Doc</span> <span class='hs-keyword'>where</span>
<a name="line-104"></a> <span class='hs-varid'>show</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>render</span> <span class='hs-conid'>Nothing</span>
<a name="line-105"></a>
<a name="line-106"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IsString</span> <span class='hs-conid'>Doc</span> <span class='hs-keyword'>where</span>
<a name="line-107"></a> <span class='hs-varid'>fromString</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span>
<a name="line-108"></a>
<a name="line-109"></a><a name="isEmpty"></a><span class='hs-comment'>-- | True if the document is empty.</span>
<a name="line-110"></a><span class='hs-definition'>isEmpty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-111"></a><span class='hs-definition'>isEmpty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>null</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unDoc</span>
<a name="line-112"></a>
<a name="line-113"></a><a name="empty"></a><span class='hs-comment'>-- | The empty document.</span>
<a name="line-114"></a><span class='hs-definition'>empty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span>
<a name="line-115"></a><span class='hs-definition'>empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-116"></a>
<a name="line-117"></a><a name="<>"></a><span class='hs-comment'>-- | @a <> b@ is the result of concatenating @a@ with @b@.</span>
<a name="line-118"></a><span class='hs-layout'>(</span><span class='hs-varop'><></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-119"></a><span class='hs-layout'>(</span><span class='hs-varop'><></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mappend</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="cat"></a><span class='hs-comment'>-- | Concatenate a list of 'Doc's.</span>
<a name="line-122"></a><span class='hs-definition'>cat</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Doc</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-123"></a><span class='hs-definition'>cat</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mconcat</span>
<a name="line-124"></a>
<a name="line-125"></a><a name="hcat"></a><span class='hs-comment'>-- | Same as 'cat'.</span>
<a name="line-126"></a><span class='hs-definition'>hcat</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Doc</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-127"></a><span class='hs-definition'>hcat</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mconcat</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="<+>"></a><span class='hs-comment'>-- | Concatenate a list of 'Doc's, putting breakable spaces</span>
<a name="line-130"></a><span class='hs-comment'>-- between them.</span>
<a name="line-131"></a><span class='hs-layout'>(</span><span class='hs-varop'><+></span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-132"></a><span class='hs-layout'>(</span><span class='hs-varop'><+></span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEmpty</span> <span class='hs-varid'>x</span>
<a name="line-133"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>y</span>
<a name="line-134"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEmpty</span> <span class='hs-varid'>y</span>
<a name="line-135"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>x</span>
<a name="line-136"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>x</span> <span class='hs-varop'><></span> <span class='hs-varid'>space</span> <span class='hs-varop'><></span> <span class='hs-varid'>y</span>
<a name="line-137"></a>
<a name="line-138"></a><a name="hsep"></a><span class='hs-comment'>-- | Same as 'cat', but putting breakable spaces between the</span>
<a name="line-139"></a><span class='hs-comment'>-- 'Doc's.</span>
<a name="line-140"></a><span class='hs-definition'>hsep</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Doc</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-141"></a><span class='hs-definition'>hsep</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varop'><+></span><span class='hs-layout'>)</span> <span class='hs-varid'>empty</span>
<a name="line-142"></a>
<a name="line-143"></a><a name="$$"></a><span class='hs-comment'>-- | @a $$ b@ puts @a@ above @b@.</span>
<a name="line-144"></a><span class='hs-layout'>(</span><span class='hs-varop'>$$</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-145"></a><span class='hs-layout'>(</span><span class='hs-varop'>$$</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEmpty</span> <span class='hs-varid'>x</span>
<a name="line-146"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>y</span>
<a name="line-147"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEmpty</span> <span class='hs-varid'>y</span>
<a name="line-148"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>x</span>
<a name="line-149"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>x</span> <span class='hs-varop'><></span> <span class='hs-varid'>cr</span> <span class='hs-varop'><></span> <span class='hs-varid'>y</span>
<a name="line-150"></a>
<a name="line-151"></a><a name="$+$"></a><span class='hs-comment'>-- | @a $$ b@ puts @a@ above @b@, with a blank line between.</span>
<a name="line-152"></a><span class='hs-layout'>(</span><span class='hs-varop'>$+$</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-153"></a><span class='hs-layout'>(</span><span class='hs-varop'>$+$</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEmpty</span> <span class='hs-varid'>x</span>
<a name="line-154"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>y</span>
<a name="line-155"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEmpty</span> <span class='hs-varid'>y</span>
<a name="line-156"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>x</span>
<a name="line-157"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>x</span> <span class='hs-varop'><></span> <span class='hs-varid'>blankline</span> <span class='hs-varop'><></span> <span class='hs-varid'>y</span>
<a name="line-158"></a>
<a name="line-159"></a><a name="vcat"></a><span class='hs-comment'>-- | List version of '$$'.</span>
<a name="line-160"></a><span class='hs-definition'>vcat</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Doc</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-161"></a><span class='hs-definition'>vcat</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varop'>$$</span><span class='hs-layout'>)</span> <span class='hs-varid'>empty</span>
<a name="line-162"></a>
<a name="line-163"></a><a name="vsep"></a><span class='hs-comment'>-- | List version of '$+$'.</span>
<a name="line-164"></a><span class='hs-definition'>vsep</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Doc</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-165"></a><span class='hs-definition'>vsep</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varop'>$+$</span><span class='hs-layout'>)</span> <span class='hs-varid'>empty</span>
<a name="line-166"></a>
<a name="line-167"></a><a name="outp"></a><span class='hs-definition'>outp</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsString</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Monoid</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-168"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DocState</span> <span class='hs-varid'>a</span>
<a name="line-169"></a><span class='hs-definition'>outp</span> <span class='hs-varid'>off</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>off</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-170"></a> <span class='hs-varid'>st'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-171"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>rawpref</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefix</span> <span class='hs-varid'>st'</span>
<a name="line-172"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>column</span> <span class='hs-varid'>st'</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>usePrefix</span> <span class='hs-varid'>st'</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'>rawpref</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-173"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>pref</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>$</span> <span class='hs-varid'>dropWhile</span> <span class='hs-varid'>isSpace</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>rawpref</span>
<a name="line-174"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span><span class='hs-layout'>{</span> <span class='hs-varid'>output</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromString</span> <span class='hs-varid'>pref</span> <span class='hs-conop'>:</span> <span class='hs-varid'>output</span> <span class='hs-varid'>st</span>
<a name="line-175"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>column</span> <span class='hs-varid'>st</span> <span class='hs-varop'>+</span> <span class='hs-varid'>length</span> <span class='hs-varid'>pref</span> <span class='hs-layout'>}</span>
<a name="line-176"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>off</span> <span class='hs-varop'><</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-177"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span> <span class='hs-layout'>{</span> <span class='hs-varid'>output</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromString</span> <span class='hs-varid'>s</span> <span class='hs-conop'>:</span> <span class='hs-varid'>output</span> <span class='hs-varid'>st</span>
<a name="line-178"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-179"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newlines</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newlines</span> <span class='hs-varid'>st</span> <span class='hs-varop'>+</span> <span class='hs-num'>1</span> <span class='hs-layout'>}</span>
<a name="line-180"></a><span class='hs-definition'>outp</span> <span class='hs-varid'>off</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-181"></a> <span class='hs-varid'>st'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-182"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>pref</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefix</span> <span class='hs-varid'>st'</span>
<a name="line-183"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>column</span> <span class='hs-varid'>st'</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>usePrefix</span> <span class='hs-varid'>st'</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'>pref</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-184"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span><span class='hs-layout'>{</span> <span class='hs-varid'>output</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromString</span> <span class='hs-varid'>pref</span> <span class='hs-conop'>:</span> <span class='hs-varid'>output</span> <span class='hs-varid'>st</span>
<a name="line-185"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>column</span> <span class='hs-varid'>st</span> <span class='hs-varop'>+</span> <span class='hs-varid'>length</span> <span class='hs-varid'>pref</span> <span class='hs-layout'>}</span>
<a name="line-186"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span><span class='hs-layout'>{</span> <span class='hs-varid'>output</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromString</span> <span class='hs-varid'>s</span> <span class='hs-conop'>:</span> <span class='hs-varid'>output</span> <span class='hs-varid'>st</span>
<a name="line-187"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>column</span> <span class='hs-varid'>st</span> <span class='hs-varop'>+</span> <span class='hs-varid'>off</span>
<a name="line-188"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newlines</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span> <span class='hs-layout'>}</span>
<a name="line-189"></a>
<a name="line-190"></a><a name="render"></a><span class='hs-comment'>-- | Renders a 'Doc'. @render (Just n)@ will use</span>
<a name="line-191"></a><span class='hs-comment'>-- a line length of @n@ to reflow text on breakable spaces.</span>
<a name="line-192"></a><span class='hs-comment'>-- @render Nothing@ will not reflow text.</span>
<a name="line-193"></a><span class='hs-definition'>render</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monoid</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>IsString</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-194"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-195"></a><span class='hs-definition'>render</span> <span class='hs-varid'>linelen</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromString</span> <span class='hs-varop'>.</span> <span class='hs-varid'>mconcat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>.</span> <span class='hs-varid'>output</span> <span class='hs-varop'>$</span>
<a name="line-196"></a> <span class='hs-varid'>execState</span> <span class='hs-layout'>(</span><span class='hs-varid'>renderDoc</span> <span class='hs-varid'>doc</span><span class='hs-layout'>)</span> <span class='hs-varid'>startingState</span>
<a name="line-197"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>startingState</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RenderState</span><span class='hs-layout'>{</span>
<a name="line-198"></a> <span class='hs-varid'>output</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-199"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-200"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>usePrefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-201"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>lineLength</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>linelen</span>
<a name="line-202"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-203"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newlines</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>2</span> <span class='hs-layout'>}</span>
<a name="line-204"></a>
<a name="line-205"></a><a name="renderDoc"></a><span class='hs-definition'>renderDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsString</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Monoid</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-206"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DocState</span> <span class='hs-varid'>a</span>
<a name="line-207"></a><span class='hs-definition'>renderDoc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderList</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toList</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unDoc</span>
<a name="line-208"></a>
<a name="line-209"></a><a name="renderList"></a><span class='hs-definition'>renderList</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsString</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Monoid</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-210"></a> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>D</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DocState</span> <span class='hs-varid'>a</span>
<a name="line-211"></a><span class='hs-definition'>renderList</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-212"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span> <span class='hs-varid'>off</span> <span class='hs-varid'>s</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-213"></a> <span class='hs-varid'>outp</span> <span class='hs-varid'>off</span> <span class='hs-varid'>s</span>
<a name="line-214"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-215"></a>
<a name="line-216"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prefixed</span> <span class='hs-varid'>pref</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-217"></a> <span class='hs-varid'>st</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-218"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>oldPref</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefix</span> <span class='hs-varid'>st</span>
<a name="line-219"></a> <span class='hs-varid'>put</span> <span class='hs-varid'>st</span><span class='hs-layout'>{</span> <span class='hs-varid'>prefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefix</span> <span class='hs-varid'>st</span> <span class='hs-varop'>++</span> <span class='hs-varid'>pref</span> <span class='hs-layout'>}</span>
<a name="line-220"></a> <span class='hs-varid'>renderDoc</span> <span class='hs-varid'>d</span>
<a name="line-221"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span><span class='hs-layout'>{</span> <span class='hs-varid'>prefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oldPref</span> <span class='hs-layout'>}</span>
<a name="line-222"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-223"></a>
<a name="line-224"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>Flush</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-225"></a> <span class='hs-varid'>st</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-226"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>oldUsePrefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>usePrefix</span> <span class='hs-varid'>st</span>
<a name="line-227"></a> <span class='hs-varid'>put</span> <span class='hs-varid'>st</span><span class='hs-layout'>{</span> <span class='hs-varid'>usePrefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span> <span class='hs-layout'>}</span>
<a name="line-228"></a> <span class='hs-varid'>renderDoc</span> <span class='hs-varid'>d</span>
<a name="line-229"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span><span class='hs-layout'>{</span> <span class='hs-varid'>usePrefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oldUsePrefix</span> <span class='hs-layout'>}</span>
<a name="line-230"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-231"></a>
<a name="line-232"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlankLine</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-233"></a> <span class='hs-varid'>st</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-234"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>output</span> <span class='hs-varid'>st</span> <span class='hs-keyword'>of</span>
<a name="line-235"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>newlines</span> <span class='hs-varid'>st</span> <span class='hs-varop'>></span> <span class='hs-num'>1</span> <span class='hs-varop'>||</span> <span class='hs-varid'>null</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-236"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>column</span> <span class='hs-varid'>st</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-237"></a> <span class='hs-varid'>outp</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-str'>"\n"</span>
<a name="line-238"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-239"></a> <span class='hs-varid'>outp</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-str'>"\n"</span>
<a name="line-240"></a> <span class='hs-varid'>outp</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-str'>"\n"</span>
<a name="line-241"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-242"></a>
<a name="line-243"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>CarriageReturn</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-244"></a> <span class='hs-varid'>st</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-245"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>newlines</span> <span class='hs-varid'>st</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span> <span class='hs-varop'>||</span> <span class='hs-varid'>null</span> <span class='hs-varid'>xs</span>
<a name="line-246"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-247"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-248"></a> <span class='hs-varid'>outp</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-str'>"\n"</span>
<a name="line-249"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-250"></a>
<a name="line-251"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>NewLine</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-252"></a> <span class='hs-varid'>outp</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-str'>"\n"</span>
<a name="line-253"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-254"></a>
<a name="line-255"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BreakingSpace</span> <span class='hs-conop'>:</span> <span class='hs-conid'>CarriageReturn</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>CarriageReturn</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-256"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BreakingSpace</span> <span class='hs-conop'>:</span> <span class='hs-conid'>NewLine</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>NewLine</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-257"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BreakingSpace</span> <span class='hs-conop'>:</span> <span class='hs-conid'>BlankLine</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlankLine</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-258"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BreakingSpace</span> <span class='hs-conop'>:</span> <span class='hs-conid'>BreakingSpace</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BreakingSpace</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-259"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>BreakingSpace</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-260"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>isText</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>_</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-261"></a> <span class='hs-varid'>isText</span> <span class='hs-layout'>(</span><span class='hs-conid'>Block</span> <span class='hs-keyword'>_</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-262"></a> <span class='hs-varid'>isText</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-263"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>isBreakingSpace</span> <span class='hs-conid'>BreakingSpace</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-264"></a> <span class='hs-varid'>isBreakingSpace</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-265"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>xs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dropWhile</span> <span class='hs-varid'>isBreakingSpace</span> <span class='hs-varid'>xs</span>
<a name="line-266"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>next</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>takeWhile</span> <span class='hs-varid'>isText</span> <span class='hs-varid'>xs'</span>
<a name="line-267"></a> <span class='hs-varid'>st</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-268"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>off</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>offsetOf</span> <span class='hs-varid'>next</span>
<a name="line-269"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>lineLength</span> <span class='hs-varid'>st</span> <span class='hs-keyword'>of</span>
<a name="line-270"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>column</span> <span class='hs-varid'>st</span> <span class='hs-varop'>+</span> <span class='hs-num'>1</span> <span class='hs-varop'>+</span> <span class='hs-varid'>off</span> <span class='hs-varop'>></span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-271"></a> <span class='hs-varid'>outp</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-str'>"\n"</span>
<a name="line-272"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs'</span>
<a name="line-273"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-274"></a> <span class='hs-varid'>outp</span> <span class='hs-num'>1</span> <span class='hs-str'>" "</span>
<a name="line-275"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs'</span>
<a name="line-276"></a>
<a name="line-277"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-varid'>b1</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Block</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-conop'>:</span> <span class='hs-varid'>b2</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Block</span><span class='hs-layout'>{</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-keyglyph'>=</span>
<a name="line-278"></a> <span class='hs-varid'>renderList</span> <span class='hs-layout'>(</span><span class='hs-varid'>mergeBlocks</span> <span class='hs-conid'>False</span> <span class='hs-varid'>b1</span> <span class='hs-varid'>b2</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-279"></a>
<a name="line-280"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-varid'>b1</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Block</span><span class='hs-layout'>{</span><span class='hs-layout'>}</span> <span class='hs-conop'>:</span> <span class='hs-conid'>BreakingSpace</span> <span class='hs-conop'>:</span> <span class='hs-varid'>b2</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Block</span><span class='hs-layout'>{</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-keyglyph'>=</span>
<a name="line-281"></a> <span class='hs-varid'>renderList</span> <span class='hs-layout'>(</span><span class='hs-varid'>mergeBlocks</span> <span class='hs-conid'>True</span> <span class='hs-varid'>b1</span> <span class='hs-varid'>b2</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-282"></a>
<a name="line-283"></a><span class='hs-definition'>renderList</span> <span class='hs-layout'>(</span><span class='hs-conid'>Block</span> <span class='hs-varid'>width</span> <span class='hs-varid'>lns</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-284"></a> <span class='hs-varid'>st</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>get</span>
<a name="line-285"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>oldPref</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefix</span> <span class='hs-varid'>st</span>
<a name="line-286"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>column</span> <span class='hs-varid'>st</span> <span class='hs-comment'>-</span> <span class='hs-varid'>length</span> <span class='hs-varid'>oldPref</span> <span class='hs-keyword'>of</span>
<a name="line-287"></a> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>></span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span><span class='hs-layout'>{</span> <span class='hs-varid'>prefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oldPref</span> <span class='hs-varop'>++</span> <span class='hs-varid'>replicate</span> <span class='hs-varid'>n</span> <span class='hs-chr'>' '</span> <span class='hs-layout'>}</span>
<a name="line-288"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-289"></a> <span class='hs-varid'>renderDoc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>blockToDoc</span> <span class='hs-varid'>width</span> <span class='hs-varid'>lns</span>
<a name="line-290"></a> <span class='hs-varid'>modify</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span><span class='hs-layout'>{</span> <span class='hs-varid'>prefix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oldPref</span> <span class='hs-layout'>}</span>
<a name="line-291"></a> <span class='hs-varid'>renderList</span> <span class='hs-varid'>xs</span>
<a name="line-292"></a>
<a name="line-293"></a><a name="mergeBlocks"></a><span class='hs-definition'>mergeBlocks</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>D</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>D</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>D</span>
<a name="line-294"></a><span class='hs-definition'>mergeBlocks</span> <span class='hs-varid'>addSpace</span> <span class='hs-layout'>(</span><span class='hs-conid'>Block</span> <span class='hs-varid'>w1</span> <span class='hs-varid'>lns1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Block</span> <span class='hs-varid'>w2</span> <span class='hs-varid'>lns2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-295"></a> <span class='hs-conid'>Block</span> <span class='hs-layout'>(</span><span class='hs-varid'>w1</span> <span class='hs-varop'>+</span> <span class='hs-varid'>w2</span> <span class='hs-varop'>+</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>addSpace</span> <span class='hs-keyword'>then</span> <span class='hs-num'>1</span> <span class='hs-keyword'>else</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-296"></a> <span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>l1</span> <span class='hs-varid'>l2</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pad</span> <span class='hs-varid'>w1</span> <span class='hs-varid'>l1</span> <span class='hs-varop'>++</span> <span class='hs-varid'>l2</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>lns1</span> <span class='hs-varop'>++</span> <span class='hs-varid'>empties</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>sp</span> <span class='hs-varid'>lns2</span> <span class='hs-varop'>++</span> <span class='hs-varid'>empties</span><span class='hs-layout'>)</span>
<a name="line-297"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>empties</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>abs</span> <span class='hs-varop'>$</span> <span class='hs-varid'>length</span> <span class='hs-varid'>lns1</span> <span class='hs-comment'>-</span> <span class='hs-varid'>length</span> <span class='hs-varid'>lns2</span><span class='hs-layout'>)</span> <span class='hs-str'>""</span>
<a name="line-298"></a> <span class='hs-varid'>pad</span> <span class='hs-varid'>n</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span> <span class='hs-comment'>-</span> <span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-chr'>' '</span>
<a name="line-299"></a> <span class='hs-varid'>sp</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-300"></a> <span class='hs-varid'>sp</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>addSpace</span> <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-chr'>' '</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>xs</span>
<a name="line-301"></a><span class='hs-definition'>mergeBlocks</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"mergeBlocks tried on non-Block!"</span>
<a name="line-302"></a>
<a name="line-303"></a><a name="blockToDoc"></a><span class='hs-definition'>blockToDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</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'>Doc</span>
<a name="line-304"></a><span class='hs-definition'>blockToDoc</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>lns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span> <span class='hs-varop'>$</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varid'>lns</span>
<a name="line-305"></a>
<a name="line-306"></a><a name="offsetOf"></a><span class='hs-definition'>offsetOf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>D</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-307"></a><span class='hs-definition'>offsetOf</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span> <span class='hs-varid'>o</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>o</span>
<a name="line-308"></a><span class='hs-definition'>offsetOf</span> <span class='hs-layout'>(</span><span class='hs-conid'>Block</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>w</span>
<a name="line-309"></a><span class='hs-definition'>offsetOf</span> <span class='hs-conid'>BreakingSpace</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-310"></a><span class='hs-definition'>offsetOf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-311"></a>
<a name="line-312"></a><a name="text"></a><span class='hs-comment'>-- | A literal string.</span>
<a name="line-313"></a><span class='hs-definition'>text</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-314"></a><span class='hs-definition'>text</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toChunks</span>
<a name="line-315"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>toChunks</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DList</span> <span class='hs-conid'>D</span>
<a name="line-316"></a> <span class='hs-varid'>toChunks</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-317"></a> <span class='hs-varid'>toChunks</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>break</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-chr'>'\n'</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-318"></a> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>NewLine</span> <span class='hs-varop'>`cons`</span> <span class='hs-varid'>toChunks</span> <span class='hs-varid'>ys</span>
<a name="line-319"></a> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Text</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-varop'>`cons`</span>
<a name="line-320"></a> <span class='hs-conid'>NewLine</span> <span class='hs-varop'>`cons`</span> <span class='hs-varid'>toChunks</span> <span class='hs-varid'>ys</span>
<a name="line-321"></a> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>singleton</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Text</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-322"></a>
<a name="line-323"></a><a name="char"></a><span class='hs-comment'>-- | A character.</span>
<a name="line-324"></a><span class='hs-definition'>char</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-325"></a><span class='hs-definition'>char</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-326"></a>
<a name="line-327"></a><a name="space"></a><span class='hs-comment'>-- | A breaking (reflowable) space.</span>
<a name="line-328"></a><span class='hs-definition'>space</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span>
<a name="line-329"></a><span class='hs-definition'>space</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>singleton</span> <span class='hs-conid'>BreakingSpace</span>
<a name="line-330"></a>
<a name="line-331"></a><a name="cr"></a><span class='hs-comment'>-- | A carriage return. Does nothing if we're at the beginning of</span>
<a name="line-332"></a><span class='hs-comment'>-- a line; otherwise inserts a newline.</span>
<a name="line-333"></a><span class='hs-definition'>cr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span>
<a name="line-334"></a><span class='hs-definition'>cr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>singleton</span> <span class='hs-conid'>CarriageReturn</span>
<a name="line-335"></a>
<a name="line-336"></a><a name="blankline"></a><span class='hs-comment'>-- | Inserts a blank line unless one exists already.</span>
<a name="line-337"></a><span class='hs-comment'>-- (@blankline <> blankline@ has the same effect as @blankline@.</span>
<a name="line-338"></a><span class='hs-comment'>-- If you want multiple blank lines, use @text "\\n\\n"@.</span>
<a name="line-339"></a><span class='hs-definition'>blankline</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span>
<a name="line-340"></a><span class='hs-definition'>blankline</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>singleton</span> <span class='hs-conid'>BlankLine</span>
<a name="line-341"></a>
<a name="line-342"></a><a name="prefixed"></a><span class='hs-comment'>-- | Uses the specified string as a prefix for every line of</span>
<a name="line-343"></a><span class='hs-comment'>-- the inside document (except the first, if not at the beginning</span>
<a name="line-344"></a><span class='hs-comment'>-- of the line).</span>
<a name="line-345"></a><span class='hs-definition'>prefixed</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-346"></a><span class='hs-definition'>prefixed</span> <span class='hs-varid'>pref</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>singleton</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Prefixed</span> <span class='hs-varid'>pref</span> <span class='hs-varid'>doc</span>
<a name="line-347"></a>
<a name="line-348"></a><a name="flush"></a><span class='hs-comment'>-- | Makes a 'Doc' flush against the left margin.</span>
<a name="line-349"></a><span class='hs-definition'>flush</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-350"></a><span class='hs-definition'>flush</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>singleton</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Flush</span> <span class='hs-varid'>doc</span>
<a name="line-351"></a>
<a name="line-352"></a><a name="nest"></a><span class='hs-comment'>-- | Indents a 'Doc' by the specified number of spaces.</span>
<a name="line-353"></a><span class='hs-definition'>nest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-354"></a><span class='hs-definition'>nest</span> <span class='hs-varid'>ind</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>replicate</span> <span class='hs-varid'>ind</span> <span class='hs-chr'>' '</span><span class='hs-layout'>)</span>
<a name="line-355"></a>
<a name="line-356"></a><a name="hang"></a><span class='hs-comment'>-- | A hanging indent. @hang ind start doc@ prints @start@,</span>
<a name="line-357"></a><span class='hs-comment'>-- then @doc@, leaving an indent of @ind@ spaces on every</span>
<a name="line-358"></a><span class='hs-comment'>-- line but the first.</span>
<a name="line-359"></a><span class='hs-definition'>hang</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-360"></a><span class='hs-definition'>hang</span> <span class='hs-varid'>ind</span> <span class='hs-varid'>start</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>start</span> <span class='hs-varop'><></span> <span class='hs-varid'>nest</span> <span class='hs-varid'>ind</span> <span class='hs-varid'>doc</span>
<a name="line-361"></a>
<a name="line-362"></a><a name="nowrap"></a><span class='hs-comment'>-- | Makes a 'Doc' non-reflowable.</span>
<a name="line-363"></a><span class='hs-definition'>nowrap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-364"></a><span class='hs-definition'>nowrap</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromList</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>replaceSpace</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toList</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unDoc</span> <span class='hs-varid'>doc</span>
<a name="line-365"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>replaceSpace</span> <span class='hs-conid'>BreakingSpace</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Text</span> <span class='hs-num'>1</span> <span class='hs-str'>" "</span>
<a name="line-366"></a> <span class='hs-varid'>replaceSpace</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-367"></a>
<a name="line-368"></a><a name="offset"></a><span class='hs-comment'>-- | Returns the width of a 'Doc'.</span>
<a name="line-369"></a><span class='hs-definition'>offset</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-370"></a><span class='hs-definition'>offset</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lines</span> <span class='hs-varop'>.</span> <span class='hs-varid'>render</span> <span class='hs-conid'>Nothing</span> <span class='hs-varop'>$</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>of</span>
<a name="line-371"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-num'>0</span>
<a name="line-372"></a> <span class='hs-varid'>os</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>maximum</span> <span class='hs-varid'>os</span>
<a name="line-373"></a>
<a name="line-374"></a><a name="block"></a><span class='hs-definition'>block</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'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-375"></a><span class='hs-definition'>block</span> <span class='hs-varid'>filler</span> <span class='hs-varid'>width</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Doc</span> <span class='hs-varop'>.</span> <span class='hs-varid'>singleton</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Block</span> <span class='hs-varid'>width</span> <span class='hs-varop'>.</span>
<a name="line-376"></a> <span class='hs-varid'>map</span> <span class='hs-varid'>filler</span> <span class='hs-varop'>.</span> <span class='hs-varid'>chop</span> <span class='hs-varid'>width</span> <span class='hs-varop'>.</span> <span class='hs-varid'>render</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>width</span><span class='hs-layout'>)</span>
<a name="line-377"></a>
<a name="line-378"></a><a name="lblock"></a><span class='hs-comment'>-- | @lblock n d@ is a block of width @n@ characters, with</span>
<a name="line-379"></a><span class='hs-comment'>-- text derived from @d@ and aligned to the left.</span>
<a name="line-380"></a><span class='hs-definition'>lblock</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-381"></a><span class='hs-definition'>lblock</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>block</span> <span class='hs-varid'>id</span>
<a name="line-382"></a>
<a name="line-383"></a><a name="rblock"></a><span class='hs-comment'>-- | Like 'lblock' but aligned to the right.</span>
<a name="line-384"></a><span class='hs-definition'>rblock</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-385"></a><span class='hs-definition'>rblock</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>block</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-comment'>-</span> <span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-chr'>' '</span> <span class='hs-varop'>++</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span>
<a name="line-386"></a>
<a name="line-387"></a><a name="cblock"></a><span class='hs-comment'>-- | Like 'lblock' but aligned centered.</span>
<a name="line-388"></a><span class='hs-definition'>cblock</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-389"></a><span class='hs-definition'>cblock</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>block</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-comment'>-</span> <span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>`div`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-chr'>' '</span> <span class='hs-varop'>++</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>w</span>
<a name="line-390"></a>
<a name="line-391"></a><a name="height"></a><span class='hs-comment'>-- | Returns the height of a block or other 'Doc'.</span>
<a name="line-392"></a><span class='hs-definition'>height</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-393"></a><span class='hs-definition'>height</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lines</span> <span class='hs-varop'>.</span> <span class='hs-varid'>render</span> <span class='hs-conid'>Nothing</span>
<a name="line-394"></a>
<a name="line-395"></a><a name="chop"></a><span class='hs-definition'>chop</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</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><span class='hs-keyglyph'>]</span>
<a name="line-396"></a><span class='hs-definition'>chop</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-397"></a><span class='hs-definition'>chop</span> <span class='hs-varid'>n</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>break</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-chr'>'\n'</span><span class='hs-layout'>)</span> <span class='hs-varid'>cs</span> <span class='hs-keyword'>of</span>
<a name="line-398"></a> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>len</span> <span class='hs-varop'><=</span> <span class='hs-varid'>n</span>
<a name="line-399"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>ys</span> <span class='hs-keyword'>of</span>
<a name="line-400"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>xs</span><span class='hs-keyglyph'>]</span>
<a name="line-401"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>xs</span><span class='hs-layout'>,</span> <span class='hs-str'>""</span><span class='hs-keyglyph'>]</span>
<a name="line-402"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-varid'>zs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>xs</span> <span class='hs-conop'>:</span> <span class='hs-varid'>chop</span> <span class='hs-varid'>n</span> <span class='hs-varid'>zs</span>
<a name="line-403"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>take</span> <span class='hs-varid'>n</span> <span class='hs-varid'>xs</span> <span class='hs-conop'>:</span> <span class='hs-varid'>chop</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-varid'>drop</span> <span class='hs-varid'>n</span> <span class='hs-varid'>xs</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-404"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>xs</span>
<a name="line-405"></a>
<a name="line-406"></a><a name="inside"></a><span class='hs-comment'>-- | Encloses a 'Doc' inside a start and end 'Doc'.</span>
<a name="line-407"></a><span class='hs-definition'>inside</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-408"></a><span class='hs-definition'>inside</span> <span class='hs-varid'>start</span> <span class='hs-varid'>end</span> <span class='hs-varid'>contents</span> <span class='hs-keyglyph'>=</span>
<a name="line-409"></a> <span class='hs-varid'>start</span> <span class='hs-varop'><></span> <span class='hs-varid'>contents</span> <span class='hs-varop'><></span> <span class='hs-varid'>end</span>
<a name="line-410"></a>
<a name="line-411"></a><a name="braces"></a><span class='hs-comment'>-- | Puts a 'Doc' in curly braces.</span>
<a name="line-412"></a><span class='hs-definition'>braces</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-413"></a><span class='hs-definition'>braces</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inside</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'{'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'}'</span><span class='hs-layout'>)</span>
<a name="line-414"></a>
<a name="line-415"></a><a name="brackets"></a><span class='hs-comment'>-- | Puts a 'Doc' in square brackets.</span>
<a name="line-416"></a><span class='hs-definition'>brackets</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-417"></a><span class='hs-definition'>brackets</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inside</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'['</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>']'</span><span class='hs-layout'>)</span>
<a name="line-418"></a>
<a name="line-419"></a><a name="parens"></a><span class='hs-comment'>-- | Puts a 'Doc' in parentheses.</span>
<a name="line-420"></a><span class='hs-definition'>parens</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-421"></a><span class='hs-definition'>parens</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inside</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'('</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>')'</span><span class='hs-layout'>)</span>
<a name="line-422"></a>
<a name="line-423"></a><a name="quotes"></a><span class='hs-comment'>-- | Wraps a 'Doc' in single quotes.</span>
<a name="line-424"></a><span class='hs-definition'>quotes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-425"></a><span class='hs-definition'>quotes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inside</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'\''</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'\''</span><span class='hs-layout'>)</span>
<a name="line-426"></a>
<a name="line-427"></a><a name="doubleQuotes"></a><span class='hs-comment'>-- | Wraps a 'Doc' in double quotes.</span>
<a name="line-428"></a><span class='hs-definition'>doubleQuotes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Doc</span>
<a name="line-429"></a><span class='hs-definition'>doubleQuotes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inside</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'"'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'"'</span><span class='hs-layout'>)</span>
</pre></body>
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