1999-08-16 21:50:52 +00:00
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/*
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*****************************************************************************************
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1999-11-22 21:47:27 +00:00
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* Copyright <EFBFBD> {1997-1999}, International Business Machines Corporation and others. All Rights Reserved.
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1999-08-16 21:50:52 +00:00
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* *
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*****************************************************************************************
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*
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* File UNICDCM.H
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*
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* UnicodeClassMapping maps characters to state change inputs for WordBreakTable.
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*
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* @package Text and International
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* @category Text Scanning
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*
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* Modification History:
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*
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* Date Name Description
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* 02/18/97 aliu Converted from OpenClass.
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* 05/06/97 aliu Made SpecialMapping an array of objects instead of pointers,
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* to help out non-compliant compilers.
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*****************************************************************************************
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*/
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#ifndef UNICDCM_H
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#define UNICDCM_H
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#include "spclmap.h"
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1999-12-28 23:57:50 +00:00
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#include "unicode/unicode.h"
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1999-08-16 21:50:52 +00:00
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/**
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* This class maps characters to state change inputs for
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* WordBreakTable. If the character appears in the exception list,
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* the mapping there is retuned, otherwise the mapping returned by
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* IUnicode::type is returned.
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*
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* Note in this implementation characters from 0x0040 to 0x009f always use the
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* mapping returned by IUnicode::type and never the exception list.
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*/
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class UnicodeClassMapping {
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public:
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// For convenience
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typedef TextBoundaryData::Type Type;
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/**
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* Create a mapping given a mapping from categories and a list
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* of exceptions. Both the mapping list and exceptionChars list must
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* be sorted in ascending order.
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*/
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UnicodeClassMapping(Type* mappedValue,
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int32_t mappedValue_length,
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const SpecialMapping* exceptionChars,
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int32_t exceptionChars_length,
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const bool_t* hasException,
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Type* asiiValues );
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/**
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* Map a character to a state change input for WordBreakTable.
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* @param ch the character to map.
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* @return the mapped value.
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*/
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Type mappedChar(UChar ch) const;
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private:
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const bool_t *fHasException;
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const Type* fMappedValue;
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const int32_t fMappedValue_length;
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const SpecialMapping* fExceptionChars;
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const int32_t fExceptionChars_length;
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const Type* fAsciiValues;
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};
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#endif // _UNICDCM
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//eof
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