зеркало из https://github.com/mozilla/gecko-dev.git
116 строки
3.0 KiB
C++
116 строки
3.0 KiB
C++
//==========================================================================
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/*
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* Copyright (c) 1995 Taligent, Inc. All Rights Reserved.
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* @version 1.0 23/10/96
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* @author Helena Shih
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* Based on Taligent international support for java
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*/
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#ifndef _CMPBYTEA
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#define _CMPBYTEA
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#ifndef _PTYPES
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#include "ptypes.h"
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#endif
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//====================================
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// class CompactByteArray
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// Provides a compact way to store information that is indexed by Unicode values,
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// such as character properties, types, keyboard values, etc.
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// The ATypes are used by value, so should be small, integers or pointers.
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//====================================
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#ifdef NLS_MAC
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#pragma export on
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#endif
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class T_UTILITY_API CompactByteArray {
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public:
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static const t_int32 kUnicodeCount;
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static const t_int32 kBlockShift;
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static const t_int32 kBlockCount;
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static const t_int32 kIndexShift;
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static const t_int32 kIndexCount;
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static const t_uint32 kBlockMask;
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CompactByteArray(t_int8 defaultValue);
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CompactByteArray(t_uint16 *indexArray, t_int8 *newValues, t_int32 count);
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CompactByteArray(const CompactByteArray& that);
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~CompactByteArray();
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CompactByteArray& operator=(const CompactByteArray& that);
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// Returns TRUE if the creation of the compact array fails.
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t_bool isBogus() const;
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// Get is inline for speed
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t_int8 get(UniChar index);
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// Set automatically expands the array if it is compacted.
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void set(UniChar index, t_int8 value);
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void set(UniChar start, UniChar end, t_int8 value);
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// Compact the array.
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// The value of cycle determines how large the overlap can be.
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// A cycle of 1 is the most compacted, but takes the most time to do.
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// If values stored in the array tend to repeat in cycles of, say, 16,
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// then using that will be faster than cycle = 1, and get almost the
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// same compression.
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void compact (t_uint32 cycle = 1/* default = 1 */);
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// Expanded takes the array back to a 65536 element array
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void expand();
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// Print UniChar Array : Debug only
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void printIndex(t_int32 start, t_int32 count);
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void printPlainArray(t_int32 start,t_int32 count, const UniChar* tempIndex);
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// # of elements in the indexed array
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t_int32 getCount();
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void setCount(t_int32 n);
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const t_int8* getArray();
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const t_uint16* getIndex();
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protected:
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t_int32 findOverlappingPosition(t_uint32 start,
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const UniChar *tempIndex,
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t_int32 tempIndexCount,
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t_uint32 cycle);
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private:
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static const t_bool debugShowOverlap;
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static const t_uint32 debugShowOverlapLimit;
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static const t_bool debugTrace;
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static const t_bool debugSmall;
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static const t_uint32 debugSmallLimit;
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t_int8 NLS_HUGE * fArray;
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t_uint16* fIndex;
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t_int32 fCount;
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t_bool fCompact;
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t_bool fBogus;
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};
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#ifdef NLS_MAC
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#pragma export off
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#endif
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inline t_int8
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CompactByteArray::get(UniChar c)
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{
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return (fArray[(fIndex[c >> kBlockShift] & 0xFFFF)
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+ (c & kBlockMask)]);
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}
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inline t_bool
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CompactByteArray::isBogus() const { return fBogus; }
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#endif
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