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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP, ForeignFunctionInterface #-}</span>
<a name="line-2"></a><span class='hs-comment'>-- We cannot actually specify all the language pragmas, see ghc ticket #</span>
<a name="line-3"></a><span class='hs-comment'>-- If we could, these are what they would be:</span>
<a name="line-4"></a><span class='hs-comment'>{- LANGUAGE UnliftedFFITypes, MagicHash,
<a name="line-5"></a> UnboxedTuples, DeriveDataTypeable -}</span>
<a name="line-6"></a><span class='hs-comment'>{-# OPTIONS_HADDOCK hide #-}</span>
<a name="line-7"></a>
<a name="line-8"></a><span class='hs-comment'>-- |</span>
<a name="line-9"></a><span class='hs-comment'>-- Module : Data.ByteString.Internal</span>
<a name="line-10"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-11"></a><span class='hs-comment'>-- Maintainer : Don Stewart <dons@galois.com></span>
<a name="line-12"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-13"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-- A module containing semi-public 'ByteString' internals. This exposes the</span>
<a name="line-16"></a><span class='hs-comment'>-- 'ByteString' representation and low level construction functions. As such</span>
<a name="line-17"></a><span class='hs-comment'>-- all the functions in this module are unsafe. The API is also not stable.</span>
<a name="line-18"></a><span class='hs-comment'>--</span>
<a name="line-19"></a><span class='hs-comment'>-- Where possible application should instead use the functions from the normal</span>
<a name="line-20"></a><span class='hs-comment'>-- public interface modules, such as "Data.ByteString.Unsafe". Packages that</span>
<a name="line-21"></a><span class='hs-comment'>-- extend the ByteString system at a low level will need to use this module.</span>
<a name="line-22"></a><span class='hs-comment'>--</span>
<a name="line-23"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span> <span class='hs-layout'>(</span>
<a name="line-24"></a>
<a name="line-25"></a> <span class='hs-comment'>-- * The @ByteString@ type and representation</span>
<a name="line-26"></a> <span class='hs-conid'>ByteString</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- instances: Eq, Ord, Show, Read, Data, Typeable</span>
<a name="line-27"></a>
<a name="line-28"></a> <span class='hs-comment'>-- * Low level introduction and elimination</span>
<a name="line-29"></a> <span class='hs-varid'>create</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Int -> (Ptr Word8 -> IO ()) -> IO ByteString</span>
<a name="line-30"></a> <span class='hs-varid'>createAndTrim</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Int -> (Ptr Word8 -> IO Int) -> IO ByteString</span>
<a name="line-31"></a> <span class='hs-varid'>createAndTrim'</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Int -> (Ptr Word8 -> IO (Int, Int, a)) -> IO (ByteString, a)</span>
<a name="line-32"></a> <span class='hs-varid'>unsafeCreate</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Int -> (Ptr Word8 -> IO ()) -> ByteString</span>
<a name="line-33"></a> <span class='hs-varid'>mallocByteString</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Int -> IO (ForeignPtr a)</span>
<a name="line-34"></a>
<a name="line-35"></a> <span class='hs-comment'>-- * Conversion to and from ForeignPtrs</span>
<a name="line-36"></a> <span class='hs-varid'>fromForeignPtr</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: ForeignPtr Word8 -> Int -> Int -> ByteString</span>
<a name="line-37"></a> <span class='hs-varid'>toForeignPtr</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: ByteString -> (ForeignPtr Word8, Int, Int)</span>
<a name="line-38"></a>
<a name="line-39"></a> <span class='hs-comment'>-- * Utilities</span>
<a name="line-40"></a> <span class='hs-varid'>inlinePerformIO</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: IO a -> a</span>
<a name="line-41"></a> <span class='hs-varid'>nullForeignPtr</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: ForeignPtr Word8</span>
<a name="line-42"></a>
<a name="line-43"></a> <span class='hs-comment'>-- * Standard C Functions</span>
<a name="line-44"></a> <span class='hs-varid'>c_strlen</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: CString -> IO CInt</span>
<a name="line-45"></a> <span class='hs-varid'>c_free_finalizer</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: FunPtr (Ptr Word8 -> IO ())</span>
<a name="line-46"></a>
<a name="line-47"></a> <span class='hs-varid'>memchr</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> Word8 -> CSize -> IO Ptr Word8</span>
<a name="line-48"></a> <span class='hs-varid'>memcmp</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> Ptr Word8 -> CSize -> IO CInt</span>
<a name="line-49"></a> <span class='hs-varid'>memcpy</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> Ptr Word8 -> CSize -> IO ()</span>
<a name="line-50"></a> <span class='hs-varid'>memset</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> Word8 -> CSize -> IO (Ptr Word8)</span>
<a name="line-51"></a>
<a name="line-52"></a> <span class='hs-comment'>-- * cbits functions</span>
<a name="line-53"></a> <span class='hs-varid'>c_reverse</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> Ptr Word8 -> CInt -> IO ()</span>
<a name="line-54"></a> <span class='hs-varid'>c_intersperse</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> Ptr Word8 -> CInt -> Word8 -> IO ()</span>
<a name="line-55"></a> <span class='hs-varid'>c_maximum</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> CInt -> IO Word8</span>
<a name="line-56"></a> <span class='hs-varid'>c_minimum</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> CInt -> IO Word8</span>
<a name="line-57"></a> <span class='hs-varid'>c_count</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr Word8 -> CInt -> Word8 -> IO CInt</span>
<a name="line-58"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ < 611</span>
<a name="line-59"></a> <span class='hs-comment'>-- * Internal GHC magic</span>
<a name="line-60"></a> <span class='hs-varid'>memcpy_ptr_baoff</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- :: Ptr a -> RawBuffer -> CInt -> CSize -> IO (Ptr ())</span>
<a name="line-61"></a><span class='hs-cpp'>#endif</span>
<a name="line-62"></a>
<a name="line-63"></a> <span class='hs-comment'>-- * Chars</span>
<a name="line-64"></a> <span class='hs-varid'>w2c</span><span class='hs-layout'>,</span> <span class='hs-varid'>c2w</span><span class='hs-layout'>,</span> <span class='hs-varid'>isSpaceWord8</span><span class='hs-layout'>,</span> <span class='hs-varid'>isSpaceChar8</span>
<a name="line-65"></a>
<a name="line-66"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>withForeignPtr</span><span class='hs-layout'>)</span>
<a name="line-69"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span><span class='hs-layout'>,</span> <span class='hs-conid'>FunPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>plusPtr</span><span class='hs-layout'>)</span>
<a name="line-70"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-71"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CSize</span><span class='hs-layout'>,</span> <span class='hs-conid'>CULong</span><span class='hs-layout'>)</span>
<a name="line-72"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-conid'>CString</span><span class='hs-layout'>)</span>
<a name="line-73"></a>
<a name="line-74"></a><span class='hs-cpp'>#ifndef __NHC__</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'>Exception</span> <span class='hs-layout'>(</span><span class='hs-varid'>assert</span><span class='hs-layout'>)</span>
<a name="line-76"></a><span class='hs-cpp'>#endif</span>
<a name="line-77"></a>
<a name="line-78"></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'>ord</span><span class='hs-layout'>)</span>
<a name="line-79"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>)</span>
<a name="line-80"></a>
<a name="line-81"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__)</span>
<a name="line-82"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Typeable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-83"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 610</span>
<a name="line-84"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span> <span class='hs-layout'>(</span><span class='hs-conid'>Data</span><span class='hs-layout'>)</span>
<a name="line-85"></a><span class='hs-cpp'>#else</span>
<a name="line-86"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Generics</span> <span class='hs-layout'>(</span><span class='hs-conid'>Data</span><span class='hs-layout'>)</span>
<a name="line-87"></a><span class='hs-cpp'>#endif</span>
<a name="line-88"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span> <span class='hs-layout'>(</span><span class='hs-varid'>realWorld</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span><span class='hs-varid'>unsafeChr</span><span class='hs-layout'>)</span>
<a name="line-89"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 611</span>
<a name="line-90"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-91"></a><span class='hs-cpp'>#else</span>
<a name="line-92"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IOBase</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-layout'>(</span><span class='hs-conid'>IO</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-conid'>RawBuffer</span><span class='hs-layout'>)</span>
<a name="line-93"></a><span class='hs-cpp'>#endif</span>
<a name="line-94"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 611</span>
<a name="line-95"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeDupablePerformIO</span><span class='hs-layout'>)</span>
<a name="line-96"></a><span class='hs-cpp'>#elif __GLASGOW_HASKELL__ >= 608</span>
<a name="line-97"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IOBase</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeDupablePerformIO</span><span class='hs-layout'>)</span>
<a name="line-98"></a><span class='hs-cpp'>#else</span>
<a name="line-99"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IOBase</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span><span class='hs-layout'>)</span>
<a name="line-100"></a><span class='hs-cpp'>#endif</span>
<a name="line-101"></a><span class='hs-cpp'>#else</span>
<a name="line-102"></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'>chr</span><span class='hs-layout'>)</span>
<a name="line-103"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span><span class='hs-layout'>)</span>
<a name="line-104"></a><span class='hs-cpp'>#endif</span>
<a name="line-105"></a>
<a name="line-106"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 605 && !defined(SLOW_FOREIGN_PTR)</span>
<a name="line-107"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-varid'>mallocPlainForeignPtrBytes</span><span class='hs-layout'>)</span>
<a name="line-108"></a><span class='hs-cpp'>#else</span>
<a name="line-109"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-varid'>mallocForeignPtrBytes</span><span class='hs-layout'>)</span>
<a name="line-110"></a><span class='hs-cpp'>#endif</span>
<a name="line-111"></a>
<a name="line-112"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__>=605</span>
<a name="line-113"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span><span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-114"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span> <span class='hs-layout'>(</span><span class='hs-varid'>nullAddr</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-115"></a><span class='hs-cpp'>#else</span>
<a name="line-116"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>nullPtr</span><span class='hs-layout'>)</span>
<a name="line-117"></a><span class='hs-cpp'>#endif</span>
<a name="line-118"></a>
<a name="line-119"></a><span class='hs-cpp'>#if __HUGS__</span>
<a name="line-120"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Hugs</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-varid'>newForeignPtr_</span><span class='hs-layout'>)</span>
<a name="line-121"></a><span class='hs-cpp'>#elif __GLASGOW_HASKELL__<=604</span>
<a name="line-122"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-varid'>newForeignPtr_</span><span class='hs-layout'>)</span>
<a name="line-123"></a><span class='hs-cpp'>#endif</span>
<a name="line-124"></a>
<a name="line-125"></a><span class='hs-comment'>-- CFILES stuff is Hugs only</span>
<a name="line-126"></a><span class='hs-comment'>{-# CFILES cbits/fpstring.c #-}</span>
<a name="line-127"></a>
<a name="line-128"></a><span class='hs-comment'>-- An alternative to Control.Exception (assert) for nhc98</span>
<a name="line-129"></a><span class='hs-cpp'>#ifdef __NHC__</span>
<a name="line-130"></a><span class='hs-cpp'>#define assert assertS "__FILE__ : __LINE__"</span>
<a name="line-131"></a><a name="assertS"></a><span class='hs-definition'>assertS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-132"></a><span class='hs-definition'>assertS</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>id</span>
<a name="line-133"></a><span class='hs-definition'>assertS</span> <span class='hs-varid'>s</span> <span class='hs-conid'>False</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-layout'>(</span><span class='hs-str'>"assertion failed at "</span><span class='hs-varop'>++</span><span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-134"></a><span class='hs-cpp'>#endif</span>
<a name="line-135"></a>
<a name="line-136"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-137"></a><span class='hs-comment'>--</span>
<a name="line-138"></a><span class='hs-comment'>-- Useful macros, until we have bang patterns</span>
<a name="line-139"></a><span class='hs-comment'>--</span>
<a name="line-140"></a>
<a name="line-141"></a><span class='hs-cpp'>#define STRICT1(f) f a | a `seq` False = undefined</span>
<a name="line-142"></a><span class='hs-cpp'>#define STRICT2(f) f a b | a `seq` b `seq` False = undefined</span>
<a name="line-143"></a><span class='hs-cpp'>#define STRICT3(f) f a b c | a `seq` b `seq` c `seq` False = undefined</span>
<a name="line-144"></a><span class='hs-cpp'>#define STRICT4(f) f a b c d | a `seq` b `seq` c `seq` d `seq` False = undefined</span>
<a name="line-145"></a><span class='hs-cpp'>#define STRICT5(f) f a b c d e | a `seq` b `seq` c `seq` d `seq` e `seq` False = undefined</span>
<a name="line-146"></a>
<a name="line-147"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="ByteString"></a><span class='hs-comment'>-- | A space-efficient representation of a Word8 vector, supporting many</span>
<a name="line-150"></a><a name="ByteString"></a><span class='hs-comment'>-- efficient operations. A 'ByteString' contains 8-bit characters only.</span>
<a name="line-151"></a><a name="ByteString"></a><span class='hs-comment'>--</span>
<a name="line-152"></a><a name="ByteString"></a><span class='hs-comment'>-- Instances of Eq, Ord, Read, Show, Data, Typeable</span>
<a name="line-153"></a><a name="ByteString"></a><span class='hs-comment'>--</span>
<a name="line-154"></a><a name="ByteString"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PS</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- payload</span>
<a name="line-155"></a> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span> <span class='hs-comment'>-- offset</span>
<a name="line-156"></a> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span> <span class='hs-comment'>-- length</span>
<a name="line-157"></a>
<a name="line-158"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__)</span>
<a name="line-159"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Data</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-160"></a><span class='hs-cpp'>#endif</span>
<a name="line-161"></a>
<a name="line-162"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Show</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-163"></a> <span class='hs-varid'>showsPrec</span> <span class='hs-varid'>p</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showsPrec</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>unpackWith</span> <span class='hs-varid'>w2c</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span>
<a name="line-164"></a>
<a name="line-165"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Read</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-166"></a> <span class='hs-varid'>readsPrec</span> <span class='hs-varid'>p</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>packWith</span> <span class='hs-varid'>c2w</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readsPrec</span> <span class='hs-varid'>p</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>]</span>
<a name="line-167"></a>
<a name="line-168"></a><a name="unpackWith"></a><span class='hs-comment'>-- | /O(n)/ Converts a 'ByteString' to a '[a]', using a conversion function.</span>
<a name="line-169"></a><span class='hs-definition'>unpackWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-170"></a><span class='hs-definition'>unpackWith</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-171"></a><span class='hs-definition'>unpackWith</span> <span class='hs-varid'>k</span> <span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inlinePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span>
<a name="line-172"></a> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
<a name="line-173"></a> <span class='hs-keyword'>where</span>
<a name="line-174"></a> <span class='hs-conid'>STRICT3</span><span class='hs-layout'>(</span><span class='hs-varid'>go</span><span class='hs-layout'>)</span>
<a name="line-175"></a> <span class='hs-varid'>go</span> <span class='hs-varid'>p</span> <span class='hs-num'>0</span> <span class='hs-varid'>acc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>k</span> <span class='hs-varid'>e</span> <span class='hs-conop'>:</span> <span class='hs-varid'>acc</span><span class='hs-layout'>)</span>
<a name="line-176"></a> <span class='hs-varid'>go</span> <span class='hs-varid'>p</span> <span class='hs-varid'>n</span> <span class='hs-varid'>acc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>p</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>go</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>k</span> <span class='hs-varid'>e</span> <span class='hs-conop'>:</span> <span class='hs-varid'>acc</span><span class='hs-layout'>)</span>
<a name="line-177"></a><span class='hs-comment'>{-# INLINE unpackWith #-}</span>
<a name="line-178"></a>
<a name="line-179"></a><a name="packWith"></a><span class='hs-comment'>-- | /O(n)/ Convert a '[a]' into a 'ByteString' using some</span>
<a name="line-180"></a><span class='hs-comment'>-- conversion function</span>
<a name="line-181"></a><span class='hs-definition'>packWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>ByteString</span>
<a name="line-182"></a><span class='hs-definition'>packWith</span> <span class='hs-varid'>k</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeCreate</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>str</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>go</span> <span class='hs-varid'>p</span> <span class='hs-varid'>str</span>
<a name="line-183"></a> <span class='hs-keyword'>where</span>
<a name="line-184"></a> <span class='hs-conid'>STRICT2</span><span class='hs-layout'>(</span><span class='hs-varid'>go</span><span class='hs-layout'>)</span>
<a name="line-185"></a> <span class='hs-varid'>go</span> <span class='hs-keyword'>_</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-186"></a> <span class='hs-varid'>go</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</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'>poke</span> <span class='hs-varid'>p</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-varop'>>></span> <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-comment'>-- less space than pokeElemOff</span>
<a name="line-187"></a><span class='hs-comment'>{-# INLINE packWith #-}</span>
<a name="line-188"></a>
<a name="line-189"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="nullForeignPtr"></a><span class='hs-comment'>-- | The 0 pointer. Used to indicate the empty Bytestring.</span>
<a name="line-192"></a><span class='hs-definition'>nullForeignPtr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-193"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__>=605</span>
<a name="line-194"></a><span class='hs-definition'>nullForeignPtr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-varid'>nullAddr</span><span class='hs-cpp'>#</span> <span class='hs-varid'>undefined</span> <span class='hs-comment'>--TODO: should ForeignPtrContents be strict?</span>
<a name="line-195"></a><span class='hs-cpp'>#else</span>
<a name="line-196"></a><span class='hs-definition'>nullForeignPtr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>newForeignPtr_</span> <span class='hs-varid'>nullPtr</span>
<a name="line-197"></a><span class='hs-comment'>{-# NOINLINE nullForeignPtr #-}</span>
<a name="line-198"></a><span class='hs-cpp'>#endif</span>
<a name="line-199"></a>
<a name="line-200"></a><span class='hs-comment'>-- ---------------------------------------------------------------------</span>
<a name="line-201"></a><span class='hs-comment'>-- Low level constructors</span>
<a name="line-202"></a>
<a name="line-203"></a><a name="fromForeignPtr"></a><span class='hs-comment'>-- | /O(1)/ Build a ByteString from a ForeignPtr.</span>
<a name="line-204"></a><span class='hs-comment'>--</span>
<a name="line-205"></a><span class='hs-comment'>-- If you do not need the offset parameter then you do should be using</span>
<a name="line-206"></a><span class='hs-comment'>-- 'Data.ByteString.Unsafe.unsafePackCStringLen' or</span>
<a name="line-207"></a><span class='hs-comment'>-- 'Data.ByteString.Unsafe.unsafePackCStringFinalizer' instead.</span>
<a name="line-208"></a><span class='hs-comment'>--</span>
<a name="line-209"></a><span class='hs-definition'>fromForeignPtr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span>
<a name="line-210"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Offset</span>
<a name="line-211"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Length</span>
<a name="line-212"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span>
<a name="line-213"></a><span class='hs-definition'>fromForeignPtr</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PS</span> <span class='hs-varid'>fp</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span>
<a name="line-214"></a><span class='hs-comment'>{-# INLINE fromForeignPtr #-}</span>
<a name="line-215"></a>
<a name="line-216"></a><a name="toForeignPtr"></a><span class='hs-comment'>-- | /O(1)/ Deconstruct a ForeignPtr from a ByteString</span>
<a name="line-217"></a><span class='hs-definition'>toForeignPtr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-conid'>Word8</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ (ptr, offset, length)</span>
<a name="line-218"></a><span class='hs-definition'>toForeignPtr</span> <span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span>
<a name="line-219"></a><span class='hs-comment'>{-# INLINE toForeignPtr #-}</span>
<a name="line-220"></a>
<a name="line-221"></a><a name="unsafeCreate"></a><span class='hs-comment'>-- | A way of creating ByteStrings outside the IO monad. The @Int@</span>
<a name="line-222"></a><span class='hs-comment'>-- argument gives the final size of the ByteString. Unlike</span>
<a name="line-223"></a><span class='hs-comment'>-- 'createAndTrim' the ByteString is not reallocated if the final size</span>
<a name="line-224"></a><span class='hs-comment'>-- is less than the estimated size.</span>
<a name="line-225"></a><span class='hs-definition'>unsafeCreate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteString</span>
<a name="line-226"></a><span class='hs-definition'>unsafeCreate</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeDupablePerformIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>create</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-227"></a><span class='hs-comment'>{-# INLINE unsafeCreate #-}</span>
<a name="line-228"></a>
<a name="line-229"></a><span class='hs-cpp'>#if !defined(__GLASGOW_HASKELL__) || __GLASGOW_HASKELL__ < 608</span>
<a name="line-230"></a><a name="unsafeDupablePerformIO"></a><span class='hs-comment'>-- for Hugs </span>
<a name="line-231"></a><span class='hs-definition'>unsafeDupablePerformIO</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-232"></a><span class='hs-definition'>unsafeDupablePerformIO</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span>
<a name="line-233"></a><span class='hs-cpp'>#endif</span>
<a name="line-234"></a>
<a name="line-235"></a><a name="create"></a><span class='hs-comment'>-- | Create ByteString of size @l@ and use action @f@ to fill it's contents.</span>
<a name="line-236"></a><span class='hs-definition'>create</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ByteString</span>
<a name="line-237"></a><span class='hs-definition'>create</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-238"></a> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocByteString</span> <span class='hs-varid'>l</span>
<a name="line-239"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>fp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-240"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>PS</span> <span class='hs-varid'>fp</span> <span class='hs-num'>0</span> <span class='hs-varid'>l</span>
<a name="line-241"></a><span class='hs-comment'>{-# INLINE create #-}</span>
<a name="line-242"></a>
<a name="line-243"></a><a name="createAndTrim"></a><span class='hs-comment'>-- | Given the maximum size needed and a function to make the contents</span>
<a name="line-244"></a><span class='hs-comment'>-- of a ByteString, createAndTrim makes the 'ByteString'. The generating</span>
<a name="line-245"></a><span class='hs-comment'>-- function is required to return the actual final size (<= the maximum</span>
<a name="line-246"></a><span class='hs-comment'>-- size), and the resulting byte array is realloced to this size.</span>
<a name="line-247"></a><span class='hs-comment'>--</span>
<a name="line-248"></a><span class='hs-comment'>-- createAndTrim is the main mechanism for creating custom, efficient</span>
<a name="line-249"></a><span class='hs-comment'>-- ByteString functions, using Haskell or C functions to fill the space.</span>
<a name="line-250"></a><span class='hs-comment'>--</span>
<a name="line-251"></a><span class='hs-definition'>createAndTrim</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ByteString</span>
<a name="line-252"></a><span class='hs-definition'>createAndTrim</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-253"></a> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocByteString</span> <span class='hs-varid'>l</span>
<a name="line-254"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>fp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-255"></a> <span class='hs-varid'>l'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-256"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>l'</span> <span class='hs-varop'><=</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>l'</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>l</span>
<a name="line-257"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-conid'>PS</span> <span class='hs-varid'>fp</span> <span class='hs-num'>0</span> <span class='hs-varid'>l</span>
<a name="line-258"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>create</span> <span class='hs-varid'>l'</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>memcpy</span> <span class='hs-varid'>p'</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>l'</span><span class='hs-layout'>)</span>
<a name="line-259"></a><span class='hs-comment'>{-# INLINE createAndTrim #-}</span>
<a name="line-260"></a>
<a name="line-261"></a><a name="createAndTrim'"></a><span class='hs-definition'>createAndTrim'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-262"></a><span class='hs-definition'>createAndTrim'</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-263"></a> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mallocByteString</span> <span class='hs-varid'>l</span>
<a name="line-264"></a> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>fp</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-265"></a> <span class='hs-layout'>(</span><span class='hs-varid'>off</span><span class='hs-layout'>,</span> <span class='hs-varid'>l'</span><span class='hs-layout'>,</span> <span class='hs-varid'>res</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-266"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>l'</span> <span class='hs-varop'><=</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>l'</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>l</span>
<a name="line-267"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-layout'>(</span><span class='hs-conid'>PS</span> <span class='hs-varid'>fp</span> <span class='hs-num'>0</span> <span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-varid'>res</span><span class='hs-layout'>)</span>
<a name="line-268"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>create</span> <span class='hs-varid'>l'</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p'</span> <span class='hs-keyglyph'>-></span>
<a name="line-269"></a> <span class='hs-varid'>memcpy</span> <span class='hs-varid'>p'</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>`plusPtr`</span> <span class='hs-varid'>off</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>l'</span><span class='hs-layout'>)</span>
<a name="line-270"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span><span class='hs-layout'>,</span> <span class='hs-varid'>res</span><span class='hs-layout'>)</span>
<a name="line-271"></a>
<a name="line-272"></a><a name="mallocByteString"></a><span class='hs-comment'>-- | Wrapper of mallocForeignPtrBytes with faster implementation</span>
<a name="line-273"></a><span class='hs-comment'>-- for GHC 6.5 builds newer than 06/06/06</span>
<a name="line-274"></a><span class='hs-definition'>mallocByteString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ForeignPtr</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-275"></a><span class='hs-definition'>mallocByteString</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-276"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 605 && !defined(SLOW_FOREIGN_PTR)</span>
<a name="line-277"></a> <span class='hs-varid'>mallocPlainForeignPtrBytes</span> <span class='hs-varid'>l</span>
<a name="line-278"></a><span class='hs-cpp'>#else</span>
<a name="line-279"></a> <span class='hs-varid'>mallocForeignPtrBytes</span> <span class='hs-varid'>l</span>
<a name="line-280"></a><span class='hs-cpp'>#endif</span>
<a name="line-281"></a><span class='hs-comment'>{-# INLINE mallocByteString #-}</span>
<a name="line-282"></a>
<a name="line-283"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-284"></a>
<a name="line-285"></a><a name="w2c"></a><span class='hs-comment'>-- | Conversion between 'Word8' and 'Char'. Should compile to a no-op.</span>
<a name="line-286"></a><span class='hs-definition'>w2c</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Char</span>
<a name="line-287"></a><span class='hs-cpp'>#if !defined(__GLASGOW_HASKELL__)</span>
<a name="line-288"></a><span class='hs-definition'>w2c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>chr</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromIntegral</span>
<a name="line-289"></a><span class='hs-cpp'>#else</span>
<a name="line-290"></a><span class='hs-definition'>w2c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeChr</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromIntegral</span>
<a name="line-291"></a><span class='hs-cpp'>#endif</span>
<a name="line-292"></a><span class='hs-comment'>{-# INLINE w2c #-}</span>
<a name="line-293"></a>
<a name="line-294"></a><a name="c2w"></a><span class='hs-comment'>-- | Unsafe conversion between 'Char' and 'Word8'. This is a no-op and</span>
<a name="line-295"></a><span class='hs-comment'>-- silently truncates to 8 bits Chars > '\255'. It is provided as</span>
<a name="line-296"></a><span class='hs-comment'>-- convenience for ByteString construction.</span>
<a name="line-297"></a><span class='hs-definition'>c2w</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span>
<a name="line-298"></a><span class='hs-definition'>c2w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>.</span> <span class='hs-varid'>ord</span>
<a name="line-299"></a><span class='hs-comment'>{-# INLINE c2w #-}</span>
<a name="line-300"></a>
<a name="line-301"></a><a name="isSpaceWord8"></a><span class='hs-comment'>-- | Selects words corresponding to white-space characters in the Latin-1 range</span>
<a name="line-302"></a><span class='hs-comment'>-- ordered by frequency. </span>
<a name="line-303"></a><span class='hs-definition'>isSpaceWord8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-304"></a><span class='hs-definition'>isSpaceWord8</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span>
<a name="line-305"></a> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-num'>0x20</span> <span class='hs-varop'>||</span>
<a name="line-306"></a> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-num'>0x0A</span> <span class='hs-varop'>||</span> <span class='hs-comment'>-- LF, \n</span>
<a name="line-307"></a> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-num'>0x09</span> <span class='hs-varop'>||</span> <span class='hs-comment'>-- HT, \t</span>
<a name="line-308"></a> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-num'>0x0C</span> <span class='hs-varop'>||</span> <span class='hs-comment'>-- FF, \f</span>
<a name="line-309"></a> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-num'>0x0D</span> <span class='hs-varop'>||</span> <span class='hs-comment'>-- CR, \r</span>
<a name="line-310"></a> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-num'>0x0B</span> <span class='hs-varop'>||</span> <span class='hs-comment'>-- VT, \v</span>
<a name="line-311"></a> <span class='hs-varid'>w</span> <span class='hs-varop'>==</span> <span class='hs-num'>0xA0</span> <span class='hs-comment'>-- spotted by QC..</span>
<a name="line-312"></a><span class='hs-comment'>{-# INLINE isSpaceWord8 #-}</span>
<a name="line-313"></a>
<a name="line-314"></a><a name="isSpaceChar8"></a><span class='hs-comment'>-- | Selects white-space characters in the Latin-1 range</span>
<a name="line-315"></a><span class='hs-definition'>isSpaceChar8</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-316"></a><span class='hs-definition'>isSpaceChar8</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span>
<a name="line-317"></a> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>' '</span> <span class='hs-varop'>||</span>
<a name="line-318"></a> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\t'</span> <span class='hs-varop'>||</span>
<a name="line-319"></a> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\n'</span> <span class='hs-varop'>||</span>
<a name="line-320"></a> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\r'</span> <span class='hs-varop'>||</span>
<a name="line-321"></a> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\f'</span> <span class='hs-varop'>||</span>
<a name="line-322"></a> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\v'</span> <span class='hs-varop'>||</span>
<a name="line-323"></a> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\xa0'</span>
<a name="line-324"></a><span class='hs-comment'>{-# INLINE isSpaceChar8 #-}</span>
<a name="line-325"></a>
<a name="line-326"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-327"></a>
<a name="line-328"></a><a name="inlinePerformIO"></a><span class='hs-comment'>-- | Just like unsafePerformIO, but we inline it. Big performance gains as</span>
<a name="line-329"></a><span class='hs-comment'>-- it exposes lots of things to further inlining. /Very unsafe/. In</span>
<a name="line-330"></a><span class='hs-comment'>-- particular, you should do no memory allocation inside an</span>
<a name="line-331"></a><span class='hs-comment'>-- 'inlinePerformIO' block. On Hugs this is just @unsafePerformIO@.</span>
<a name="line-332"></a><span class='hs-comment'>--</span>
<a name="line-333"></a><span class='hs-comment'>{-# INLINE inlinePerformIO #-}</span>
<a name="line-334"></a><span class='hs-definition'>inlinePerformIO</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-335"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__)</span>
<a name="line-336"></a><span class='hs-definition'>inlinePerformIO</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>m</span> <span class='hs-varid'>realWorld</span><span class='hs-cpp'>#</span> <span class='hs-keyword'>of</span> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>r</span> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>r</span>
<a name="line-337"></a><span class='hs-cpp'>#else</span>
<a name="line-338"></a><span class='hs-definition'>inlinePerformIO</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span>
<a name="line-339"></a><span class='hs-cpp'>#endif</span>
<a name="line-340"></a>
<a name="line-341"></a><span class='hs-comment'>-- ---------------------------------------------------------------------</span>
<a name="line-342"></a><span class='hs-comment'>-- </span>
<a name="line-343"></a><span class='hs-comment'>-- Standard C functions</span>
<a name="line-344"></a><span class='hs-comment'>--</span>
<a name="line-345"></a>
<a name="line-346"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"string.h strlen"</span> <span class='hs-varid'>c_strlen</span>
<a name="line-347"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CSize</span>
<a name="line-348"></a>
<a name="line-349"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"static stdlib.h &free"</span> <span class='hs-varid'>c_free_finalizer</span>
<a name="line-350"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FunPtr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-351"></a>
<a name="line-352"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"string.h memchr"</span> <span class='hs-varid'>c_memchr</span>
<a name="line-353"></a> <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'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</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-354"></a>
<a name="line-355"></a><a name="memchr"></a><span class='hs-definition'>memchr</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'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</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-356"></a><span class='hs-definition'>memchr</span> <span class='hs-varid'>p</span> <span class='hs-varid'>w</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c_memchr</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-357"></a>
<a name="line-358"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"string.h memcmp"</span> <span class='hs-varid'>memcmp</span>
<a name="line-359"></a> <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'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-360"></a>
<a name="line-361"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"string.h memcpy"</span> <span class='hs-varid'>c_memcpy</span>
<a name="line-362"></a> <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'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</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-363"></a>
<a name="line-364"></a><a name="memcpy"></a><span class='hs-definition'>memcpy</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'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-365"></a><span class='hs-definition'>memcpy</span> <span class='hs-varid'>p</span> <span class='hs-varid'>q</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c_memcpy</span> <span class='hs-varid'>p</span> <span class='hs-varid'>q</span> <span class='hs-varid'>s</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-366"></a>
<a name="line-367"></a><span class='hs-comment'>{-
<a name="line-368"></a>foreign import ccall unsafe "string.h memmove" c_memmove
<a name="line-369"></a> :: Ptr Word8 -> Ptr Word8 -> CSize -> IO (Ptr Word8)
<a name="line-370"></a>
<a name="line-371"></a>memmove :: Ptr Word8 -> Ptr Word8 -> CSize -> IO ()
<a name="line-372"></a>memmove p q s = do c_memmove p q s
<a name="line-373"></a> return ()
<a name="line-374"></a>-}</span>
<a name="line-375"></a>
<a name="line-376"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"string.h memset"</span> <span class='hs-varid'>c_memset</span>
<a name="line-377"></a> <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'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</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-378"></a>
<a name="line-379"></a><a name="memset"></a><span class='hs-definition'>memset</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'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</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-380"></a><span class='hs-definition'>memset</span> <span class='hs-varid'>p</span> <span class='hs-varid'>w</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c_memset</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-381"></a>
<a name="line-382"></a><span class='hs-comment'>-- ---------------------------------------------------------------------</span>
<a name="line-383"></a><span class='hs-comment'>--</span>
<a name="line-384"></a><span class='hs-comment'>-- Uses our C code</span>
<a name="line-385"></a><span class='hs-comment'>--</span>
<a name="line-386"></a>
<a name="line-387"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"static fpstring.h fps_reverse"</span> <span class='hs-varid'>c_reverse</span>
<a name="line-388"></a> <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'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CULong</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-389"></a>
<a name="line-390"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"static fpstring.h fps_intersperse"</span> <span class='hs-varid'>c_intersperse</span>
<a name="line-391"></a> <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'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CULong</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-392"></a>
<a name="line-393"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"static fpstring.h fps_maximum"</span> <span class='hs-varid'>c_maximum</span>
<a name="line-394"></a> <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'>CULong</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word8</span>
<a name="line-395"></a>
<a name="line-396"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"static fpstring.h fps_minimum"</span> <span class='hs-varid'>c_minimum</span>
<a name="line-397"></a> <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'>CULong</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Word8</span>
<a name="line-398"></a>
<a name="line-399"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"static fpstring.h fps_count"</span> <span class='hs-varid'>c_count</span>
<a name="line-400"></a> <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'>CULong</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CULong</span>
<a name="line-401"></a>
<a name="line-402"></a><span class='hs-comment'>-- ---------------------------------------------------------------------</span>
<a name="line-403"></a><span class='hs-comment'>-- Internal GHC Haskell magic</span>
<a name="line-404"></a>
<a name="line-405"></a><span class='hs-cpp'>#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ < 611</span>
<a name="line-406"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"__hscore_memcpy_src_off"</span>
<a name="line-407"></a> <span class='hs-varid'>memcpy_ptr_baoff</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RawBuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span>
<a name="line-408"></a><span class='hs-cpp'>#endif</span>
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