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/* CFCharacterSetPriv.h
Copyright (c) 1998-2019, Apple Inc. and the Swift project authors
Portions Copyright (c) 2014-2019, Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See http://swift.org/LICENSE.txt for license information
See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
*/
#if !defined(__COREFOUNDATION_CFCHARACTERSETPRIV__)
#define __COREFOUNDATION_CFCHARACTERSETPRIV__ 1
#include "CFCharacterSet.h"
CF_EXTERN_C_BEGIN
/*!
@function CFCharacterSetIsSurrogateHighCharacter
Reports whether or not the character is a high surrogate.
@param character The character to be checked.
@result true, if character is a high surrogate, otherwise false.
*/
CF_INLINE Boolean CFCharacterSetIsSurrogateHighCharacter(UniChar character) {
return ((character >= 0xD800UL) && (character <= 0xDBFFUL) ? true : false);
}
/*!
@function CFCharacterSetIsSurrogateLowCharacter
Reports whether or not the character is a low surrogate.
@param character The character to be checked.
@result true, if character is a low surrogate, otherwise false.
*/
CF_INLINE Boolean CFCharacterSetIsSurrogateLowCharacter(UniChar character) {
return ((character >= 0xDC00UL) && (character <= 0xDFFFUL) ? true : false);
}
/*!
@function CFCharacterSetGetLongCharacterForSurrogatePair
Returns the UTF-32 value corresponding to the surrogate pair passed in.
@param surrogateHigh The high surrogate character. If this parameter
is not a valid high surrogate character, the behavior is undefined.
@param surrogateLow The low surrogate character. If this parameter
is not a valid low surrogate character, the behavior is undefined.
@result The UTF-32 value for the surrogate pair.
*/
CF_INLINE UTF32Char CFCharacterSetGetLongCharacterForSurrogatePair(UniChar surrogateHigh, UniChar surrogateLow) {
return (UTF32Char)(((surrogateHigh - 0xD800UL) << 10) + (surrogateLow - 0xDC00UL) + 0x0010000UL);
}
/* Check to see if the character represented by the surrogate pair surrogateHigh & surrogateLow is in the chraracter set */
CF_EXPORT Boolean CFCharacterSetIsSurrogatePairMember(CFCharacterSetRef theSet, UniChar surrogateHigh, UniChar surrogateLow) ;
/* Keyed-coding support
*/
typedef CF_ENUM(CFIndex, CFCharacterSetKeyedCodingType) {
kCFCharacterSetKeyedCodingTypeBitmap = 1,
kCFCharacterSetKeyedCodingTypeBuiltin = 2,
kCFCharacterSetKeyedCodingTypeRange = 3,
kCFCharacterSetKeyedCodingTypeString = 4,
kCFCharacterSetKeyedCodingTypeBuiltinAndBitmap = 5
};
CF_EXPORT CFCharacterSetKeyedCodingType _CFCharacterSetGetKeyedCodingType(CFCharacterSetRef cset);
CF_EXPORT CFCharacterSetPredefinedSet _CFCharacterSetGetKeyedCodingBuiltinType(CFCharacterSetRef cset);
CF_EXPORT CFRange _CFCharacterSetGetKeyedCodingRange(CFCharacterSetRef cset);
CF_EXPORT CFStringRef _CFCharacterSetCreateKeyedCodingString(CFCharacterSetRef cset);
CF_EXPORT bool _CFCharacterSetIsInverted(CFCharacterSetRef cset);
CF_EXPORT void _CFCharacterSetSetIsInverted(CFCharacterSetRef cset, bool flag);
/* For use ONLY by CoreText, contact the Foundation team before using.
*/
CF_EXPORT void _CFCharacterSetCompact(CFMutableCharacterSetRef cset);
CF_EXPORT void _CFCharacterSetFast(CFMutableCharacterSetRef cset);
CF_EXTERN_C_END
#endif /* ! __COREFOUNDATION_CFCHARACTERSETPRIV__ */
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