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Diffstat (limited to 'deps/icu-small/source/common/lsr.h')
-rw-r--r-- | deps/icu-small/source/common/lsr.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/deps/icu-small/source/common/lsr.h b/deps/icu-small/source/common/lsr.h new file mode 100644 index 0000000000..db6cf938f4 --- /dev/null +++ b/deps/icu-small/source/common/lsr.h @@ -0,0 +1,72 @@ +// © 2019 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html#License + +// lsr.h +// created: 2019may08 Markus W. Scherer + +#ifndef __LSR_H__ +#define __LSR_H__ + +#include "unicode/utypes.h" +#include "unicode/uobject.h" +#include "cstring.h" + +U_NAMESPACE_BEGIN + +struct LSR final : public UMemory { + static constexpr int32_t REGION_INDEX_LIMIT = 1001 + 26 * 26; + + const char *language; + const char *script; + const char *region; + char *owned = nullptr; + /** Index for region, 0 if ill-formed. @see indexForRegion */ + int32_t regionIndex = 0; + /** Only set for LSRs that will be used in a hash table. */ + int32_t hashCode = 0; + + LSR() : language("und"), script(""), region("") {} + + /** Constructor which aliases all subtag pointers. */ + LSR(const char *lang, const char *scr, const char *r) : + language(lang), script(scr), region(r), + regionIndex(indexForRegion(region)) {} + /** + * Constructor which prepends the prefix to the language and script, + * copies those into owned memory, and aliases the region. + */ + LSR(char prefix, const char *lang, const char *scr, const char *r, UErrorCode &errorCode); + LSR(LSR &&other) U_NOEXCEPT; + LSR(const LSR &other) = delete; + inline ~LSR() { + // Pure inline code for almost all instances. + if (owned != nullptr) { + deleteOwned(); + } + } + + LSR &operator=(LSR &&other) U_NOEXCEPT; + LSR &operator=(const LSR &other) = delete; + + /** + * Returns a positive index (>0) for a well-formed region code. + * Do not rely on a particular region->index mapping; it may change. + * Returns 0 for ill-formed strings. + */ + static int32_t indexForRegion(const char *region); + + UBool operator==(const LSR &other) const; + + inline UBool operator!=(const LSR &other) const { + return !operator==(other); + } + + LSR &setHashCode(); + +private: + void deleteOwned(); +}; + +U_NAMESPACE_END + +#endif // __LSR_H__ |