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Diffstat (limited to 'intl/icu/source/common/uenumimp.h')
-rw-r--r-- | intl/icu/source/common/uenumimp.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/intl/icu/source/common/uenumimp.h b/intl/icu/source/common/uenumimp.h new file mode 100644 index 000000000..5d01f01ac --- /dev/null +++ b/intl/icu/source/common/uenumimp.h @@ -0,0 +1,155 @@ +// Copyright (C) 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* +* Copyright (C) 2002-2006, International Business Machines +* Corporation and others. All Rights Reserved. +* +******************************************************************************* +* file name: uenumimp.h +* encoding: US-ASCII +* tab size: 8 (not used) +* indentation:2 +* +* created on: 2002jul08 +* created by: Vladimir Weinstein +*/ + +#ifndef __UENUMIMP_H +#define __UENUMIMP_H + +#include "unicode/uenum.h" + +U_CDECL_BEGIN + +/** + * following are the type declarations for + * implementations of APIs. If any of these + * functions are NULL, U_UNSUPPORTED_ERROR + * is returned. If close is NULL, the enumeration + * object is going to be released. + * Initial error checking is done in the body + * of API function, so the implementations + * need not to check the initial error condition. + */ + +/** + * Function type declaration for uenum_close(). + * + * This function should cleanup the enumerator object + * + * @param en enumeration to be closed + */ +typedef void U_CALLCONV +UEnumClose(UEnumeration *en); + +/** + * Function type declaration for uenum_count(). + * + * This function should count the number of elements + * in this enumeration + * + * @param en enumeration to be counted + * @param status pointer to UErrorCode variable + * @return number of elements in enumeration + */ +typedef int32_t U_CALLCONV +UEnumCount(UEnumeration *en, UErrorCode *status); + +/** + * Function type declaration for uenum_unext(). + * + * This function returns the next element as a UChar *, + * or NULL after all elements haven been enumerated. + * + * @param en enumeration + * @param resultLength pointer to result length + * @param status pointer to UErrorCode variable + * @return next element as UChar *, + * or NULL after all elements haven been enumerated + */ +typedef const UChar* U_CALLCONV +UEnumUNext(UEnumeration* en, + int32_t* resultLength, + UErrorCode* status); + +/** + * Function type declaration for uenum_next(). + * + * This function returns the next element as a char *, + * or NULL after all elements haven been enumerated. + * + * @param en enumeration + * @param resultLength pointer to result length + * @param status pointer to UErrorCode variable + * @return next element as char *, + * or NULL after all elements haven been enumerated + */ +typedef const char* U_CALLCONV +UEnumNext(UEnumeration* en, + int32_t* resultLength, + UErrorCode* status); + +/** + * Function type declaration for uenum_reset(). + * + * This function should reset the enumeration + * object + * + * @param en enumeration + * @param status pointer to UErrorCode variable + */ +typedef void U_CALLCONV +UEnumReset(UEnumeration* en, + UErrorCode* status); + + +struct UEnumeration { + /* baseContext. For the base class only. Don't touch! */ + void *baseContext; + + /* context. Use it for what you need */ + void *context; + + /** + * these are functions that will + * be used for APIs + */ + /* called from uenum_close */ + UEnumClose *close; + /* called from uenum_count */ + UEnumCount *count; + /* called from uenum_unext */ + UEnumUNext *uNext; + /* called from uenum_next */ + UEnumNext *next; + /* called from uenum_reset */ + UEnumReset *reset; +}; + +U_CDECL_END + +/* This is the default implementation for uenum_unext(). + * It automatically converts the char * string to UChar *. + * Don't call this directly. This is called internally by uenum_unext + * when a UEnumeration is defined with 'uNext' pointing to this + * function. + */ +U_CAPI const UChar* U_EXPORT2 +uenum_unextDefault(UEnumeration* en, + int32_t* resultLength, + UErrorCode* status); + +/* This is the default implementation for uenum_next(). + * It automatically converts the UChar * string to char *. + * Don't call this directly. This is called internally by uenum_next + * when a UEnumeration is defined with 'next' pointing to this + * function. + */ +U_CAPI const char* U_EXPORT2 +uenum_nextDefault(UEnumeration* en, + int32_t* resultLength, + UErrorCode* status); + +#endif |