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// © 2019 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// 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;
static constexpr int32_t EXPLICIT_LSR = 7;
static constexpr int32_t EXPLICIT_LANGUAGE = 4;
static constexpr int32_t EXPLICIT_SCRIPT = 2;
static constexpr int32_t EXPLICIT_REGION = 1;
static constexpr int32_t IMPLICIT_LSR = 0;
static constexpr int32_t DONT_CARE_FLAGS = 0;
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;
int32_t flags = 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, int32_t f) :
language(lang), script(scr), region(r),
regionIndex(indexForRegion(region)), flags(f) {}
/**
* 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, int32_t f,
UErrorCode &errorCode);
LSR(LSR &&other) noexcept;
LSR(const LSR &other) = delete;
inline ~LSR() {
// Pure inline code for almost all instances.
if (owned != nullptr) {
deleteOwned();
}
}
LSR &operator=(LSR &&other) 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 isEquivalentTo(const LSR &other) const;
bool operator==(const LSR &other) const;
inline bool operator!=(const LSR &other) const {
return !operator==(other);
}
LSR &setHashCode();
private:
void deleteOwned();
};
U_NAMESPACE_END
#endif // __LSR_H__
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