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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
* Copyright (C) 1999-2003, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: scrptrun.h
*
* created on: 10/17/2001
* created by: Eric R. Mader
*/
#ifndef __SCRPTRUN_H
#define __SCRPTRUN_H
#include "unicode/utypes.h"
#include "unicode/uobject.h"
#include "unicode/uscript.h"
U_NAMESPACE_BEGIN
struct ScriptRecord
{
UChar32 startChar;
UChar32 endChar;
UScriptCode scriptCode;
};
struct ParenStackEntry
{
int32_t pairIndex;
UScriptCode scriptCode;
};
class ScriptRun : public UObject {
public:
ScriptRun();
ScriptRun(const char16_t chars[], int32_t length);
ScriptRun(const char16_t chars[], int32_t start, int32_t length);
void reset();
void reset(int32_t start, int32_t count);
void reset(const char16_t chars[], int32_t start, int32_t length);
int32_t getScriptStart();
int32_t getScriptEnd();
UScriptCode getScriptCode();
UBool next();
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 2.2
*/
virtual inline UClassID getDynamicClassID() const override { return getStaticClassID(); }
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 2.2
*/
static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
private:
static UBool sameScript(int32_t scriptOne, int32_t scriptTwo);
int32_t charStart;
int32_t charLimit;
const char16_t *charArray;
int32_t scriptStart;
int32_t scriptEnd;
UScriptCode scriptCode;
ParenStackEntry parenStack[128];
int32_t parenSP;
static int8_t highBit(int32_t value);
static int32_t getPairIndex(UChar32 ch);
static UChar32 pairedChars[];
static const int32_t pairedCharCount;
static const int32_t pairedCharPower;
static const int32_t pairedCharExtra;
/**
* The address of this static class variable serves as this class's ID
* for ICU "poor man's RTTI".
*/
static const char fgClassID;
};
inline ScriptRun::ScriptRun()
{
reset(nullptr, 0, 0);
}
inline ScriptRun::ScriptRun(const char16_t chars[], int32_t length)
{
reset(chars, 0, length);
}
inline ScriptRun::ScriptRun(const char16_t chars[], int32_t start, int32_t length)
{
reset(chars, start, length);
}
inline int32_t ScriptRun::getScriptStart()
{
return scriptStart;
}
inline int32_t ScriptRun::getScriptEnd()
{
return scriptEnd;
}
inline UScriptCode ScriptRun::getScriptCode()
{
return scriptCode;
}
inline void ScriptRun::reset()
{
scriptStart = charStart;
scriptEnd = charStart;
scriptCode = USCRIPT_INVALID_CODE;
parenSP = -1;
}
inline void ScriptRun::reset(int32_t start, int32_t length)
{
charStart = start;
charLimit = start + length;
reset();
}
inline void ScriptRun::reset(const char16_t chars[], int32_t start, int32_t length)
{
charArray = chars;
reset(start, length);
}
U_NAMESPACE_END
#endif
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