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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE BangPatterns, CPP, ForeignFunctionInterface, MagicHash, Rank2Types,
<a name="line-2"></a> RecordWildCards, UnboxedTuples, UnliftedFFITypes #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-unused-matches #-}</span>
<a name="line-4"></a><span class='hs-comment'>-- |</span>
<a name="line-5"></a><span class='hs-comment'>-- Module : Data.Text.Array</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) 2009, 2010, 2011 Bryan O'Sullivan</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-9"></a><span class='hs-comment'>-- Maintainer : bos@serpentine.com, rtomharper@googlemail.com,</span>
<a name="line-10"></a><span class='hs-comment'>-- duncan@haskell.org</span>
<a name="line-11"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-12"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-- Packed, unboxed, heap-resident arrays. Suitable for performance</span>
<a name="line-15"></a><span class='hs-comment'>-- critical use, both in terms of large data quantities and high</span>
<a name="line-16"></a><span class='hs-comment'>-- speed.</span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>-- This module is intended to be imported @qualified@, to avoid name</span>
<a name="line-19"></a><span class='hs-comment'>-- clashes with "Prelude" functions, e.g.</span>
<a name="line-20"></a><span class='hs-comment'>--</span>
<a name="line-21"></a><span class='hs-comment'>-- > import qualified Data.Text.Array as A</span>
<a name="line-22"></a><span class='hs-comment'>--</span>
<a name="line-23"></a><span class='hs-comment'>-- The names in this module resemble those in the 'Data.Array' family</span>
<a name="line-24"></a><span class='hs-comment'>-- of modules, but are shorter due to the assumption of qualifid</span>
<a name="line-25"></a><span class='hs-comment'>-- naming.</span>
<a name="line-26"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span>
<a name="line-27"></a> <span class='hs-layout'>(</span>
<a name="line-28"></a> <span class='hs-comment'>-- * Types</span>
<a name="line-29"></a> <span class='hs-conid'>Array</span><span class='hs-layout'>(</span><span class='hs-varid'>aBA</span><span class='hs-layout'>)</span>
<a name="line-30"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>MArray</span><span class='hs-layout'>(</span><span class='hs-varid'>maBA</span><span class='hs-layout'>)</span>
<a name="line-31"></a>
<a name="line-32"></a> <span class='hs-comment'>-- * Functions</span>
<a name="line-33"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>copyM</span>
<a name="line-34"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>copyI</span>
<a name="line-35"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>empty</span>
<a name="line-36"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>equal</span>
<a name="line-37"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-38"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>length</span>
<a name="line-39"></a><span class='hs-cpp'>#endif</span>
<a name="line-40"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>run</span>
<a name="line-41"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>run2</span>
<a name="line-42"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>toList</span>
<a name="line-43"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeFreeze</span>
<a name="line-44"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeIndex</span>
<a name="line-45"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>new</span>
<a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unsafeWrite</span>
<a name="line-47"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-50"></a><span class='hs-comment'>-- This fugly hack is brought by GHC's apparent reluctance to deal</span>
<a name="line-51"></a><span class='hs-comment'>-- with MagicHash and UnboxedTuples when inferring types. Eek!</span>
<a name="line-52"></a><span class='hs-cpp'># define CHECK_BOUNDS(_func_,_len_,_k_) \</span>
<a name="line-53"></a><span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-sel'>_k_</span><span class='hs-layout'>)</span> <span class='hs-varop'><</span> <span class='hs-num'>0</span> <span class='hs-varop'>||</span> <span class='hs-layout'>(</span><span class='hs-sel'>_k_</span><span class='hs-layout'>)</span> <span class='hs-varop'>>=</span> <span class='hs-layout'>(</span><span class='hs-sel'>_len_</span><span class='hs-layout'>)</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>error</span> <span class='hs-layout'>(</span><span class='hs-str'>"Data.Text.Array."</span> <span class='hs-varop'>++</span> <span class='hs-layout'>(</span><span class='hs-sel'>_func_</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>": bounds error, offset "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-sel'>_k_</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>", length "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-sel'>_len_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span>
<a name="line-54"></a><span class='hs-cpp'>#else</span>
<a name="line-55"></a><span class='hs-cpp'># define CHECK_BOUNDS(_func_,_len_,_k_)</span>
<a name="line-56"></a><span class='hs-cpp'>#endif</span>
<a name="line-57"></a>
<a name="line-58"></a><span class='hs-cpp'>#include "MachDeps.h"</span>
<a name="line-59"></a>
<a name="line-60"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-61"></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-62"></a><span class='hs-cpp'>#endif</span>
<a name="line-63"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 702</span>
<a name="line-64"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeIOToST</span><span class='hs-layout'>)</span>
<a name="line-65"></a><span class='hs-cpp'>#else</span>
<a name="line-66"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeIOToST</span><span class='hs-layout'>)</span>
<a name="line-67"></a><span class='hs-cpp'>#endif</span>
<a name="line-68"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Bits</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>.&.</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>xor</span><span class='hs-layout'>)</span>
<a name="line-69"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span> <span class='hs-layout'>(</span><span class='hs-varid'>inlinePerformIO</span><span class='hs-layout'>)</span>
<a name="line-70"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>UnsafeShift</span> <span class='hs-layout'>(</span><span class='hs-varid'>shiftL</span><span class='hs-layout'>,</span> <span class='hs-varid'>shiftR</span><span class='hs-layout'>)</span>
<a name="line-71"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 703</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'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>CSize</span><span class='hs-layout'>(</span><span class='hs-conid'>CSize</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-73"></a><span class='hs-cpp'>#else</span>
<a name="line-74"></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>
<a name="line-75"></a><span class='hs-cpp'>#endif</span>
<a name="line-76"></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-conid'>ByteArray</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-77"></a> <span class='hs-varid'>indexWord16Array</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-varid'>newByteArray</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span>
<a name="line-78"></a> <span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-varid'>writeWord16Array</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-79"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>ST</span> <span class='hs-layout'>(</span><span class='hs-conid'>ST</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>runST</span><span class='hs-layout'>)</span>
<a name="line-80"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word16</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-81"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span><span class='hs-layout'>,</span> <span class='hs-varid'>read</span><span class='hs-layout'>)</span>
<a name="line-82"></a>
<a name="line-83"></a><a name="Array"></a><span class='hs-comment'>-- | Immutable array type.</span>
<a name="line-84"></a><a name="Array"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Array</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Array</span> <span class='hs-layout'>{</span>
<a name="line-85"></a> <span class='hs-varid'>aBA</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteArray</span><span class='hs-cpp'>#</span>
<a name="line-86"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-87"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>aLen</span> <span class='hs-keyglyph'>::</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span> <span class='hs-comment'>-- length (in units of Word16, not bytes)</span>
<a name="line-88"></a><span class='hs-cpp'>#endif</span>
<a name="line-89"></a> <span class='hs-layout'>}</span>
<a name="line-90"></a>
<a name="line-91"></a><a name="MArray"></a><span class='hs-comment'>-- | Mutable array type, for use in the ST monad.</span>
<a name="line-92"></a><a name="MArray"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MArray</span> <span class='hs-layout'>{</span>
<a name="line-93"></a> <span class='hs-varid'>maBA</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span>
<a name="line-94"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-95"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>maLen</span> <span class='hs-keyglyph'>::</span> <span class='hs-comment'>{-# UNPACK #-}</span> <span class='hs-varop'>!</span><span class='hs-conid'>Int</span> <span class='hs-comment'>-- length (in units of Word16, not bytes)</span>
<a name="line-96"></a><span class='hs-cpp'>#endif</span>
<a name="line-97"></a> <span class='hs-layout'>}</span>
<a name="line-98"></a>
<a name="line-99"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-100"></a><a name="IArray"></a><span class='hs-comment'>-- | Operations supported by all arrays.</span>
<a name="line-101"></a><a name="IArray"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>IArray</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-102"></a> <span class='hs-comment'>-- | Return the length of an array.</span>
<a name="line-103"></a> <span class='hs-varid'>length</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-104"></a>
<a name="line-105"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IArray</span> <span class='hs-conid'>Array</span> <span class='hs-keyword'>where</span>
<a name="line-106"></a> <span class='hs-varid'>length</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>aLen</span>
<a name="line-107"></a> <span class='hs-comment'>{-# INLINE length #-}</span>
<a name="line-108"></a>
<a name="line-109"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IArray</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-110"></a> <span class='hs-varid'>length</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maLen</span>
<a name="line-111"></a> <span class='hs-comment'>{-# INLINE length #-}</span>
<a name="line-112"></a><span class='hs-cpp'>#endif</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="new"></a><span class='hs-comment'>-- | Create an uninitialized mutable array.</span>
<a name="line-115"></a><span class='hs-definition'>new</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>s</span><span class='hs-varop'>.</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-116"></a><span class='hs-definition'>new</span> <span class='hs-varid'>n</span>
<a name="line-117"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'><</span> <span class='hs-num'>0</span> <span class='hs-varop'>||</span> <span class='hs-varid'>n</span> <span class='hs-varop'>.&.</span> <span class='hs-varid'>highBit</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Data.Text.Array.new: size overflow"</span>
<a name="line-118"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ST</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span>
<a name="line-119"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>newByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>len</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s1</span><span class='hs-cpp'>#</span> <span class='hs-keyword'>of</span>
<a name="line-120"></a> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s2</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-varid'>marr</span><span class='hs-cpp'>#</span> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s2</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-conid'>MArray</span> <span class='hs-varid'>marr</span><span class='hs-cpp'>#</span>
<a name="line-121"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-122"></a> <span class='hs-varid'>n</span>
<a name="line-123"></a><span class='hs-cpp'>#endif</span>
<a name="line-124"></a> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-125"></a> <span class='hs-keyword'>where</span> <span class='hs-varop'>!</span><span class='hs-layout'>(</span><span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-varid'>len</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bytesInArray</span> <span class='hs-varid'>n</span>
<a name="line-126"></a> <span class='hs-varid'>highBit</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maxBound</span> <span class='hs-varop'>`xor`</span> <span class='hs-layout'>(</span><span class='hs-varid'>maxBound</span> <span class='hs-varop'>`shiftR`</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-127"></a><span class='hs-comment'>{-# INLINE new #-}</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="unsafeFreeze"></a><span class='hs-comment'>-- | Freeze a mutable array. Do not mutate the 'MArray' afterwards!</span>
<a name="line-130"></a><span class='hs-definition'>unsafeFreeze</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Array</span>
<a name="line-131"></a><span class='hs-definition'>unsafeFreeze</span> <span class='hs-conid'>MArray</span><span class='hs-layout'>{</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ST</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span>
<a name="line-132"></a> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-conid'>Array</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span> <span class='hs-varid'>maBA</span><span class='hs-layout'>)</span>
<a name="line-133"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-134"></a> <span class='hs-varid'>maLen</span>
<a name="line-135"></a><span class='hs-cpp'>#endif</span>
<a name="line-136"></a> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-137"></a><span class='hs-comment'>{-# INLINE unsafeFreeze #-}</span>
<a name="line-138"></a>
<a name="line-139"></a><a name="bytesInArray"></a><span class='hs-comment'>-- | Indicate how many bytes would be used for an array of the given</span>
<a name="line-140"></a><span class='hs-comment'>-- size.</span>
<a name="line-141"></a><span class='hs-definition'>bytesInArray</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-142"></a><span class='hs-definition'>bytesInArray</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n</span> <span class='hs-varop'>`shiftL`</span> <span class='hs-num'>1</span>
<a name="line-143"></a><span class='hs-comment'>{-# INLINE bytesInArray #-}</span>
<a name="line-144"></a>
<a name="line-145"></a><a name="unsafeIndex"></a><span class='hs-comment'>-- | Unchecked read of an immutable array. May return garbage or</span>
<a name="line-146"></a><span class='hs-comment'>-- crash on an out-of-bounds access.</span>
<a name="line-147"></a><span class='hs-definition'>unsafeIndex</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Array</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word16</span>
<a name="line-148"></a><span class='hs-definition'>unsafeIndex</span> <span class='hs-conid'>Array</span><span class='hs-layout'>{</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>}</span> <span class='hs-varid'>i</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-varid'>i</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-149"></a> <span class='hs-conid'>CHECK_BOUNDS</span><span class='hs-layout'>(</span><span class='hs-str'>"unsafeIndex"</span><span class='hs-layout'>,</span><span class='hs-varid'>aLen</span><span class='hs-layout'>,</span><span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-150"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>indexWord16Array</span><span class='hs-cpp'>#</span> <span class='hs-varid'>aBA</span> <span class='hs-varid'>i</span><span class='hs-cpp'>#</span> <span class='hs-keyword'>of</span> <span class='hs-varid'>r</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>W16</span><span class='hs-cpp'>#</span> <span class='hs-varid'>r</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-151"></a><span class='hs-comment'>{-# INLINE unsafeIndex #-}</span>
<a name="line-152"></a>
<a name="line-153"></a><a name="unsafeWrite"></a><span class='hs-comment'>-- | Unchecked write of a mutable array. May return garbage or crash</span>
<a name="line-154"></a><span class='hs-comment'>-- on an out-of-bounds access.</span>
<a name="line-155"></a><span class='hs-definition'>unsafeWrite</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word16</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-156"></a><span class='hs-definition'>unsafeWrite</span> <span class='hs-conid'>MArray</span><span class='hs-layout'>{</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>}</span> <span class='hs-varid'>i</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>I</span><span class='hs-cpp'>#</span> <span class='hs-varid'>i</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W16</span><span class='hs-cpp'>#</span> <span class='hs-varid'>e</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ST</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s1</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span>
<a name="line-157"></a> <span class='hs-conid'>CHECK_BOUNDS</span><span class='hs-layout'>(</span><span class='hs-str'>"unsafeWrite"</span><span class='hs-layout'>,</span><span class='hs-varid'>maLen</span><span class='hs-layout'>,</span><span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-158"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>writeWord16Array</span><span class='hs-cpp'>#</span> <span class='hs-varid'>maBA</span> <span class='hs-varid'>i</span><span class='hs-cpp'>#</span> <span class='hs-varid'>e</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s1</span><span class='hs-cpp'>#</span> <span class='hs-keyword'>of</span>
<a name="line-159"></a> <span class='hs-varid'>s2</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s2</span><span class='hs-cpp'>#</span><span class='hs-layout'>,</span> <span class='hs-conid'>()</span> <span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-160"></a><span class='hs-comment'>{-# INLINE unsafeWrite #-}</span>
<a name="line-161"></a>
<a name="line-162"></a><a name="toList"></a><span class='hs-comment'>-- | Convert an immutable array to a list.</span>
<a name="line-163"></a><span class='hs-definition'>toList</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Array</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Word16</span><span class='hs-keyglyph'>]</span>
<a name="line-164"></a><span class='hs-definition'>toList</span> <span class='hs-varid'>ary</span> <span class='hs-varid'>off</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>loop</span> <span class='hs-num'>0</span>
<a name="line-165"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>loop</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>i</span> <span class='hs-varop'><</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeIndex</span> <span class='hs-varid'>ary</span> <span class='hs-layout'>(</span><span class='hs-varid'>off</span><span class='hs-varop'>+</span><span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>loop</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-166"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-167"></a>
<a name="line-168"></a><a name="empty"></a><span class='hs-comment'>-- | An empty immutable array.</span>
<a name="line-169"></a><span class='hs-definition'>empty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Array</span>
<a name="line-170"></a><span class='hs-definition'>empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runST</span> <span class='hs-layout'>(</span><span class='hs-varid'>new</span> <span class='hs-num'>0</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>unsafeFreeze</span><span class='hs-layout'>)</span>
<a name="line-171"></a>
<a name="line-172"></a><a name="run"></a><span class='hs-comment'>-- | Run an action in the ST monad and return an immutable array of</span>
<a name="line-173"></a><span class='hs-comment'>-- its result.</span>
<a name="line-174"></a><span class='hs-definition'>run</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyword'>forall</span> <span class='hs-varid'>s</span><span class='hs-varop'>.</span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Array</span>
<a name="line-175"></a><span class='hs-definition'>run</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runST</span> <span class='hs-layout'>(</span><span class='hs-varid'>k</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>unsafeFreeze</span><span class='hs-layout'>)</span>
<a name="line-176"></a>
<a name="line-177"></a><a name="run2"></a><span class='hs-comment'>-- | Run an action in the ST monad and return an immutable array of</span>
<a name="line-178"></a><span class='hs-comment'>-- its result paired with whatever else the action returns.</span>
<a name="line-179"></a><span class='hs-definition'>run2</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyword'>forall</span> <span class='hs-varid'>s</span><span class='hs-varop'>.</span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>MArray</span> <span class='hs-varid'>s</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-layout'>(</span><span class='hs-conid'>Array</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-180"></a><span class='hs-definition'>run2</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runST</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span>
<a name="line-181"></a> <span class='hs-layout'>(</span><span class='hs-varid'>marr</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>k</span>
<a name="line-182"></a> <span class='hs-varid'>arr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>unsafeFreeze</span> <span class='hs-varid'>marr</span>
<a name="line-183"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-184"></a>
<a name="line-185"></a><a name="copyM"></a><span class='hs-comment'>-- | Copy some elements of a mutable array.</span>
<a name="line-186"></a><span class='hs-definition'>copyM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span> <span class='hs-comment'>-- ^ Destination</span>
<a name="line-187"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Destination offset</span>
<a name="line-188"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span> <span class='hs-comment'>-- ^ Source</span>
<a name="line-189"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Source offset</span>
<a name="line-190"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Count</span>
<a name="line-191"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-192"></a><span class='hs-definition'>copyM</span> <span class='hs-varid'>dest</span> <span class='hs-varid'>didx</span> <span class='hs-varid'>src</span> <span class='hs-varid'>sidx</span> <span class='hs-varid'>count</span>
<a name="line-193"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>count</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-194"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span>
<a name="line-195"></a><span class='hs-cpp'>#if defined(ASSERTS)</span>
<a name="line-196"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>sidx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>count</span> <span class='hs-varop'><=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>src</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span>
<a name="line-197"></a> <span class='hs-varid'>assert</span> <span class='hs-layout'>(</span><span class='hs-varid'>didx</span> <span class='hs-varop'>+</span> <span class='hs-varid'>count</span> <span class='hs-varop'><=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>dest</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span>
<a name="line-198"></a><span class='hs-cpp'>#endif</span>
<a name="line-199"></a> <span class='hs-varid'>unsafeIOToST</span> <span class='hs-varop'>$</span> <span class='hs-varid'>memcpyM</span> <span class='hs-layout'>(</span><span class='hs-varid'>maBA</span> <span class='hs-varid'>dest</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>didx</span><span class='hs-layout'>)</span>
<a name="line-200"></a> <span class='hs-layout'>(</span><span class='hs-varid'>maBA</span> <span class='hs-varid'>src</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sidx</span><span class='hs-layout'>)</span>
<a name="line-201"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>count</span><span class='hs-layout'>)</span>
<a name="line-202"></a><span class='hs-comment'>{-# INLINE copyM #-}</span>
<a name="line-203"></a>
<a name="line-204"></a><a name="copyI"></a><span class='hs-comment'>-- | Copy some elements of an immutable array.</span>
<a name="line-205"></a><span class='hs-definition'>copyI</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MArray</span> <span class='hs-varid'>s</span> <span class='hs-comment'>-- ^ Destination</span>
<a name="line-206"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Destination offset</span>
<a name="line-207"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Array</span> <span class='hs-comment'>-- ^ Source</span>
<a name="line-208"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Source offset</span>
<a name="line-209"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ First offset in destination /not/ to</span>
<a name="line-210"></a> <span class='hs-comment'>-- copy (i.e. /not/ length)</span>
<a name="line-211"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ST</span> <span class='hs-varid'>s</span> <span class='hs-conid'>()</span>
<a name="line-212"></a><span class='hs-definition'>copyI</span> <span class='hs-varid'>dest</span> <span class='hs-varid'>i0</span> <span class='hs-varid'>src</span> <span class='hs-varid'>j0</span> <span class='hs-varid'>top</span>
<a name="line-213"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>i0</span> <span class='hs-varop'>>=</span> <span class='hs-varid'>top</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-214"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeIOToST</span> <span class='hs-varop'>$</span>
<a name="line-215"></a> <span class='hs-varid'>memcpyI</span> <span class='hs-layout'>(</span><span class='hs-varid'>maBA</span> <span class='hs-varid'>dest</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>i0</span><span class='hs-layout'>)</span>
<a name="line-216"></a> <span class='hs-layout'>(</span><span class='hs-varid'>aBA</span> <span class='hs-varid'>src</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>j0</span><span class='hs-layout'>)</span>
<a name="line-217"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>top</span><span class='hs-comment'>-</span><span class='hs-varid'>i0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-218"></a><span class='hs-comment'>{-# INLINE copyI #-}</span>
<a name="line-219"></a>
<a name="line-220"></a><a name="equal"></a><span class='hs-comment'>-- | Compare portions of two arrays for equality. No bounds checking</span>
<a name="line-221"></a><span class='hs-comment'>-- is performed.</span>
<a name="line-222"></a><span class='hs-definition'>equal</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Array</span> <span class='hs-comment'>-- ^ First</span>
<a name="line-223"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Offset into first</span>
<a name="line-224"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Array</span> <span class='hs-comment'>-- ^ Second</span>
<a name="line-225"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Offset into second</span>
<a name="line-226"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Count</span>
<a name="line-227"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-228"></a><span class='hs-definition'>equal</span> <span class='hs-varid'>arrA</span> <span class='hs-varid'>offA</span> <span class='hs-varid'>arrB</span> <span class='hs-varid'>offB</span> <span class='hs-varid'>count</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>inlinePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-229"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>memcmp</span> <span class='hs-layout'>(</span><span class='hs-varid'>aBA</span> <span class='hs-varid'>arrA</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>offA</span><span class='hs-layout'>)</span>
<a name="line-230"></a> <span class='hs-layout'>(</span><span class='hs-varid'>aBA</span> <span class='hs-varid'>arrB</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>offB</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>count</span><span class='hs-layout'>)</span>
<a name="line-231"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>i</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
<a name="line-232"></a><span class='hs-comment'>{-# INLINE equal #-}</span>
<a name="line-233"></a>
<a name="line-234"></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'>"_hs_text_memcpy"</span> <span class='hs-varid'>memcpyI</span>
<a name="line-235"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteArray</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</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-236"></a>
<a name="line-237"></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'>"_hs_text_memcmp"</span> <span class='hs-varid'>memcmp</span>
<a name="line-238"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ByteArray</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ByteArray</span><span class='hs-cpp'>#</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</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-239"></a>
<a name="line-240"></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'>"_hs_text_memcpy"</span> <span class='hs-varid'>memcpyM</span>
<a name="line-241"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MutableByteArray</span><span class='hs-cpp'>#</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span>
<a name="line-242"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
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