gecko-dev/modules/libnls/headers/cmpinta.h

138 строки
3.9 KiB
C
Исходник Обычный вид История

1998-05-27 06:02:27 +04:00
//==========================================================================
/*
* Copyright (c) 1995 Taligent, Inc. All Rights Reserved.
* @version 1.0 23/10/96
* @author Helena Shih
* Based on Taligent international support for java
*/
//===============================================================================
//
// File cmpinta.h
//
// Modification History:
//
// Date Name Description
// 2/5/97 aliu Added CompactIntArray streamIn and streamOut methods.
// 05/07/97 helena Added isBogus()
//===============================================================================
#ifndef _CMPINTA
#define _CMPINTA
#include <stdio.h>
#ifndef _PTYPES
#include "ptypes.h"
#endif
//====================================
// class CompactIntArray
// Provides a compact way to store information that is indexed by Unicode values,
// such as character properties, types, keyboard values, etc.
// The ATypes are used by value, so should be small, integers or pointers.
//====================================
#ifdef NLS_MAC
#pragma export on
#endif
class T_UTILITY_API CompactIntArray {
public:
static const t_int32 kUnicodeCount;
static const t_int32 kBlockShift;
static const t_int32 kBlockCount;
static const t_int32 kIndexShift;
static const t_int32 kIndexCount;
static const t_uint32 kBlockMask;
CompactIntArray(t_int32 defaultValue);
CompactIntArray(t_uint16 *indexArray, t_int32 *newValues, t_int32 count);
CompactIntArray(const CompactIntArray& that);
~CompactIntArray();
CompactIntArray& operator=(const CompactIntArray& that);
// Returns TRUE if the creation of the compact array fails.
t_bool isBogus() const;
// Get is inline for speed
t_int32 get(UniChar index);
// Set automatically expands the array if it is compacted.
void set(UniChar index, t_int32 value);
void set(UniChar start, UniChar end, t_int32 value);
// Compact the array.
// The value of cycle determines how large the overlap can be.
// A cycle of 1 is the most compacted, but takes the most time to do.
// If values stored in the array tend to repeat in cycles of, say, 16,
// then using that will be faster than cycle = 1, and get almost the
// same compression.
void compact (t_uint32 cycle = 1/* default = 1 */);
// Expanded takes the array back to a 65536 element array
void expand();
// Print Unichar Array : Debug only
void printIndex(t_int32 start, t_int32 count);
void printPlainArray(t_int32 start,t_int32 count, const UniChar* tempIndex);
// # of elements in the indexed array
t_int32 getCount();
void setCount(t_int32 n);
const t_int32* getArray();
const t_uint16* getIndex();
/**
* The streamIn and streamOut methods read and write objects of this
* class as binary, platform-dependent data in the iostream. The stream
* must be in ios::binary mode for this to work. These methods are not
* intended for general public use; they are used by the framework to improve
* performance by storing certain objects in binary files.
*/
void streamOut(FILE* os) const;
void streamIn(FILE* is);
protected:
t_int32 findOverlappingPosition(t_uint32 start,
const UniChar *tempIndex,
t_int32 tempIndexCount,
t_uint32 cycle);
private:
static const t_bool debugShowOverlap;
static const t_uint32 debugShowOverlapLimit;
static const t_bool debugTrace;
static const t_bool debugSmall;
static const t_uint32 debugSmallLimit;
t_int32 NLS_HUGE * fArray;
t_uint16* fIndex;
t_int32 fCount;
t_bool fCompact;
t_bool fBogus;
};
#ifdef NLS_MAC
#pragma export off
#endif
inline t_int32
CompactIntArray::get(UniChar c)
{
return (fArray[(fIndex[c >> kBlockShift] & 0xFFFF)
+ (c & kBlockMask)]);
}
inline t_bool
CompactIntArray::isBogus() const { return fBogus; }
#endif