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<title>Blaze/ByteString/Builder/Internal/Types.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP, BangPatterns, Rank2Types, MonoPatBinds #-}</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Blaze.ByteString.Builder.Internal.Types</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) 2010 Simon Meier</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span>
<a name="line-6"></a><span class='hs-comment'>-- </span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : Simon Meier <iridcode@gmail.com></span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : tested on GHC only</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Core types and functions for the 'Builder' monoid and the 'Put' monad based</span>
<a name="line-12"></a><span class='hs-comment'>-- based on the 'blaze-builder' library by Jasper van der Jeugt and Simon</span>
<a name="line-13"></a><span class='hs-comment'>-- Meier.</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Blaze</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-keyword'>where</span>
<a name="line-16"></a>
<a name="line-17"></a><span class='hs-cpp'>#ifdef APPLICATIVE_IN_BASE</span>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span>
<a name="line-19"></a><span class='hs-cpp'>#endif</span>
<a name="line-20"></a>
<a name="line-21"></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-22"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>S</span>
<a name="line-23"></a>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-27"></a><span class='hs-comment'>-- The core: BuildSteps</span>
<a name="line-28"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-29"></a>
<a name="line-30"></a><a name="BufRange"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BufRange</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="BuildSignal"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span>
<a name="line-33"></a> <span class='hs-conid'>Done</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-34"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BufferFull</span>
<a name="line-35"></a> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span>
<a name="line-36"></a> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-37"></a> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>BuildStep</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-38"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>InsertByteString</span>
<a name="line-39"></a> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-40"></a> <span class='hs-varop'>!</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-41"></a> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>BuildStep</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="BuildStep"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>BuildStep</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span>
<a name="line-44"></a> <span class='hs-conid'>BuildStep</span> <span class='hs-layout'>{</span> <span class='hs-varid'>runBuildStep</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-comment'>-- Hiding the implementation of 'BuildStep's</span>
<a name="line-47"></a>
<a name="line-48"></a><a name="done"></a><span class='hs-definition'>done</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span>
<a name="line-49"></a><span class='hs-definition'>done</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Done</span>
<a name="line-50"></a>
<a name="line-51"></a><a name="bufferFull"></a><span class='hs-definition'>bufferFull</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span>
<a name="line-52"></a><span class='hs-definition'>bufferFull</span> <span class='hs-varid'>size</span> <span class='hs-varid'>op</span> <span class='hs-varid'>step</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BufferFull</span> <span class='hs-varid'>size</span> <span class='hs-varid'>op</span> <span class='hs-layout'>(</span><span class='hs-varid'>buildStep</span> <span class='hs-varid'>step</span><span class='hs-layout'>)</span>
<a name="line-53"></a>
<a name="line-54"></a><a name="insertByteString"></a><span class='hs-definition'>insertByteString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span>
<a name="line-55"></a><span class='hs-definition'>insertByteString</span> <span class='hs-varid'>op</span> <span class='hs-varid'>bs</span> <span class='hs-varid'>step</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InsertByteString</span> <span class='hs-varid'>op</span> <span class='hs-varid'>bs</span> <span class='hs-layout'>(</span><span class='hs-varid'>buildStep</span> <span class='hs-varid'>step</span><span class='hs-layout'>)</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="buildStep"></a><span class='hs-definition'>buildStep</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuildStep</span> <span class='hs-varid'>a</span>
<a name="line-58"></a><span class='hs-definition'>buildStep</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BuildStep</span>
<a name="line-59"></a>
<a name="line-60"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-61"></a><span class='hs-comment'>-- The 'Builder' Monoid and the 'Put' Monad</span>
<a name="line-62"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-63"></a>
<a name="line-64"></a><a name="Builder"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Builder</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Builder</span> <span class='hs-layout'>{</span>
<a name="line-65"></a> <span class='hs-varid'>unBuilder</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>r</span><span class='hs-varop'>.</span> <span class='hs-conid'>BuildStep</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuildStep</span> <span class='hs-varid'>r</span>
<a name="line-66"></a> <span class='hs-layout'>}</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monoid</span> <span class='hs-conid'>Builder</span> <span class='hs-keyword'>where</span>
<a name="line-69"></a> <span class='hs-varid'>mempty</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Builder</span> <span class='hs-varid'>id</span>
<a name="line-70"></a> <span class='hs-comment'>{-# INLINE mempty #-}</span>
<a name="line-71"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Builder</span> <span class='hs-varid'>b1</span><span class='hs-layout'>)</span> <span class='hs-varop'>`mappend`</span> <span class='hs-layout'>(</span><span class='hs-conid'>Builder</span> <span class='hs-varid'>b2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Builder</span> <span class='hs-varop'>$</span> <span class='hs-varid'>b1</span> <span class='hs-varop'>.</span> <span class='hs-varid'>b2</span>
<a name="line-72"></a> <span class='hs-comment'>{-# INLINE mappend #-}</span>
<a name="line-73"></a> <span class='hs-varid'>mconcat</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-varid'>mappend</span> <span class='hs-varid'>mempty</span>
<a name="line-74"></a> <span class='hs-comment'>{-# INLINE mconcat #-}</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="Put"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Put</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-layout'>{</span>
<a name="line-77"></a> <span class='hs-varid'>unPut</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>r</span><span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuildStep</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BuildStep</span> <span class='hs-varid'>r</span>
<a name="line-78"></a> <span class='hs-layout'>}</span>
<a name="line-79"></a>
<a name="line-80"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-conid'>Put</span> <span class='hs-keyword'>where</span>
<a name="line-81"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Put</span> <span class='hs-varid'>put</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>put</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>k</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-82"></a> <span class='hs-comment'>{-# INLINE fmap #-}</span>
<a name="line-83"></a>
<a name="line-84"></a><span class='hs-cpp'>#ifdef APPLICATIVE_IN_BASE</span>
<a name="line-85"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Applicative</span> <span class='hs-conid'>Put</span> <span class='hs-keyword'>where</span>
<a name="line-86"></a> <span class='hs-varid'>pure</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>k</span> <span class='hs-varid'>x</span>
<a name="line-87"></a> <span class='hs-comment'>{-# INLINE pure #-}</span>
<a name="line-88"></a> <span class='hs-varid'>f</span> <span class='hs-varop'><*></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>f'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>a'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>k</span> <span class='hs-layout'>(</span><span class='hs-varid'>f'</span> <span class='hs-varid'>a'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-89"></a> <span class='hs-comment'>{-# INLINE (<*>) #-}</span>
<a name="line-90"></a> <span class='hs-varid'>a</span> <span class='hs-varop'><*</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>a'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>k</span> <span class='hs-varid'>a'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-91"></a> <span class='hs-comment'>{-# INLINE (<*) #-}</span>
<a name="line-92"></a> <span class='hs-varid'>a</span> <span class='hs-varop'>*></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>b</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-93"></a> <span class='hs-comment'>{-# INLINE (*>) #-}</span>
<a name="line-94"></a><span class='hs-cpp'>#endif</span>
<a name="line-95"></a>
<a name="line-96"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monad</span> <span class='hs-conid'>Put</span> <span class='hs-keyword'>where</span>
<a name="line-97"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>k</span> <span class='hs-varid'>x</span>
<a name="line-98"></a> <span class='hs-comment'>{-# INLINE return #-}</span>
<a name="line-99"></a> <span class='hs-varid'>m</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>m'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>m'</span><span class='hs-layout'>)</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-100"></a> <span class='hs-comment'>{-# INLINE (>>=) #-}</span>
<a name="line-101"></a> <span class='hs-varid'>m</span> <span class='hs-varop'>>></span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unPut</span> <span class='hs-varid'>n</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-102"></a> <span class='hs-comment'>{-# INLINE (>>) #-}</span>
<a name="line-103"></a>
<a name="line-104"></a>
<a name="line-105"></a><span class='hs-comment'>-- Creation from concrete 'BuildStep's</span>
<a name="line-106"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="putBuildStepCont"></a><span class='hs-definition'>putBuildStepCont</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyword'>forall</span> <span class='hs-varid'>r</span><span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-109"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-110"></a> <span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Put</span> <span class='hs-varid'>a</span>
<a name="line-111"></a><span class='hs-definition'>putBuildStepCont</span> <span class='hs-varid'>step</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varid'>step'</span>
<a name="line-112"></a> <span class='hs-keyword'>where</span>
<a name="line-113"></a> <span class='hs-varid'>step'</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BuildStep</span> <span class='hs-varop'>$</span> <span class='hs-varid'>step</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>runBuildStep</span> <span class='hs-layout'>(</span><span class='hs-varid'>k</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-114"></a>
<a name="line-115"></a>
<a name="line-116"></a><a name="fromBuildStepCont"></a><span class='hs-definition'>fromBuildStepCont</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyword'>forall</span> <span class='hs-varid'>r</span><span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-117"></a> <span class='hs-layout'>(</span><span class='hs-conid'>BufRange</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>BuildSignal</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-118"></a> <span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Builder</span>
<a name="line-119"></a><span class='hs-definition'>fromBuildStepCont</span> <span class='hs-varid'>step</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Builder</span> <span class='hs-varid'>step'</span>
<a name="line-120"></a> <span class='hs-keyword'>where</span>
<a name="line-121"></a> <span class='hs-varid'>step'</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BuildStep</span> <span class='hs-varop'>$</span> <span class='hs-varid'>step</span> <span class='hs-layout'>(</span><span class='hs-varid'>runBuildStep</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-122"></a>
<a name="line-123"></a>
<a name="line-124"></a>
<a name="line-125"></a><span class='hs-comment'>-- Conversion between Put and Builder</span>
<a name="line-126"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-127"></a>
<a name="line-128"></a><a name="putBuilder"></a><span class='hs-comment'>-- | Put the given builder.</span>
<a name="line-129"></a><span class='hs-definition'>putBuilder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Builder</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Put</span> <span class='hs-conid'>()</span>
<a name="line-130"></a><span class='hs-definition'>putBuilder</span> <span class='hs-layout'>(</span><span class='hs-conid'>Builder</span> <span class='hs-varid'>build</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Put</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>build</span> <span class='hs-layout'>(</span><span class='hs-varid'>k</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-131"></a>
<a name="line-132"></a>
<a name="line-133"></a><a name="fromPut"></a><span class='hs-comment'>-- | Ignore the value of a put and only exploit its output side effect.</span>
<a name="line-134"></a><span class='hs-definition'>fromPut</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Put</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Builder</span>
<a name="line-135"></a><span class='hs-definition'>fromPut</span> <span class='hs-layout'>(</span><span class='hs-conid'>Put</span> <span class='hs-varid'>put</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Builder</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>k</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>put</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-136"></a>
<a name="line-137"></a>
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