/*
*******************************************************************************
*
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* the Software without restriction, including without limitation the rights to
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*******************************************************************************
* file name: scrptrun.h
*
* created on: 10/17/2001
* created by: Eric R. Mader
*/
#pragma once
#include <config_options.h>
#include <sal/config.h>
#include <vcl/dllapi.h>
#include <unicode/uobject.h>
#include <unicode/uscript.h>
#include <vector>
namespace vcl
{
struct ParenStackEntry
{
int32_t pairIndex;
UScriptCode scriptCode;
ParenStackEntry()
: pairIndex(0)
, scriptCode(USCRIPT_INVALID_CODE)
{
}
};
class UNLESS_MERGELIBS(VCL_DLLPUBLIC) ScriptRun final :
public icu::UObject
{
public:
ScriptRun(
const UChar chars[], int32_t length);
void reset();
void reset(int32_t start, int32_t count);
void reset(
const UChar chars[], int32_t start, int32_t length);
int32_t getScriptStart()
const;
int32_t getScriptEnd()
const;
UScriptCode getScriptCode()
const;
UBool next();
/**
s * ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 2.2
*/
virtual UClassID getDynamicClassID()
const override {
return getStaticClassID(); }
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 2.2
*/
static UClassID getStaticClassID()
{
return static_cast<UClassID>(
const_cast<
char*>(&fgClassID));
}
private:
int32_t charStart;
int32_t charLimit;
const UChar* charArray;
int32_t scriptStart;
int32_t scriptEnd;
UScriptCode scriptCode;
std::vector<ParenStackEntry> parenStack;
int32_t parenSP;
/**
* 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(
const UChar chars[], int32_t length)
{
parenStack.reserve(128);
reset(chars, 0, length);
}
inline int32_t ScriptRun::getScriptStart()
const {
return scriptStart; }
inline int32_t ScriptRun::getScriptEnd()
const {
return scriptEnd; }
inline UScriptCode ScriptRun::getScriptCode()
const {
return scriptCode; }
inline void ScriptRun::reset()
{
scriptStart = charStart;
scriptEnd = charStart;
scriptCode = USCRIPT_INVALID_CODE;
parenSP = -1;
parenStack.clear();
}
inline void ScriptRun::reset(int32_t start, int32_t length)
{
charStart = start;
charLimit = start + length;
reset();
}
inline void ScriptRun::reset(
const UChar chars[], int32_t start, int32_t length)
{
charArray = chars;
reset(start, length);
}
}
