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// © 2021 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
#ifndef LSTMBE_H
#define LSTMBE_H
#include <_foundation_unicode/utypes.h>
#if !UCONFIG_NO_BREAK_ITERATION
#include <_foundation_unicode/uniset.h>
#include <_foundation_unicode/ures.h>
#include <_foundation_unicode/utext.h>
#include <_foundation_unicode/utypes.h>
#include "brkeng.h"
#include "dictbe.h"
#include "uvectr32.h"
U_NAMESPACE_BEGIN
class Vectorizer;
struct LSTMData;
/*******************************************************************
* LSTMBreakEngine
*/
/**
* <p>LSTMBreakEngine is a kind of DictionaryBreakEngine that uses a
* LSTM to determine language-specific breaks.</p>
*
* <p>After it is constructed a LSTMBreakEngine may be shared between
* threads without synchronization.</p>
*/
class LSTMBreakEngine : public DictionaryBreakEngine {
public:
/**
* <p>Constructor.</p>
*/
LSTMBreakEngine(const LSTMData* data, const UnicodeSet& set, UErrorCode &status);
/**
* <p>Virtual destructor.</p>
*/
virtual ~LSTMBreakEngine();
virtual const char16_t* name() const;
protected:
/**
* <p>Divide up a range of known dictionary characters handled by this break engine.</p>
*
* @param text A UText representing the text
* @param rangeStart The start of the range of dictionary characters
* @param rangeEnd The end of the range of dictionary characters
* @param foundBreaks Output of C array of int32_t break positions, or 0
* @param status Information on any errors encountered.
* @return The number of breaks found
*/
virtual int32_t divideUpDictionaryRange(UText *text,
int32_t rangeStart,
int32_t rangeEnd,
UVector32 &foundBreaks,
UBool isPhraseBreaking,
UErrorCode& status) const override;
private:
const LSTMData* fData;
const Vectorizer* fVectorizer;
};
U_CAPI const LanguageBreakEngine* U_EXPORT2 CreateLSTMBreakEngine(
UScriptCode script, const LSTMData* data, UErrorCode& status);
U_CAPI const LSTMData* U_EXPORT2 CreateLSTMData(
UResourceBundle* rb, UErrorCode& status);
U_CAPI const LSTMData* U_EXPORT2 CreateLSTMDataForScript(
UScriptCode script, UErrorCode& status);
U_CAPI void U_EXPORT2 DeleteLSTMData(const LSTMData* data);
U_CAPI const char16_t* U_EXPORT2 LSTMDataName(const LSTMData* data);
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_BREAK_ITERATION */
#endif /* LSTMBE_H */
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