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// © 2021 and later: Unicode, Inc. and others.
// License & terms of use: https://www.unicode.org/copyright.html
// emojiprops.h
// created: 2021sep03 Markus W. Scherer
#ifndef __EMOJIPROPS_H__
#define __EMOJIPROPS_H__
#include "unicode/utypes.h"
#include "unicode/ucptrie.h"
#include "unicode/udata.h"
#include "unicode/uobject.h"
#include "uset_imp.h"
U_NAMESPACE_BEGIN
class EmojiProps : public UMemory {
public:
// @internal
EmojiProps(UErrorCode &errorCode) { load(errorCode); }
~EmojiProps();
static const EmojiProps *getSingleton(UErrorCode &errorCode);
static UBool hasBinaryProperty(UChar32 c, UProperty which);
static UBool hasBinaryProperty(const char16_t *s, int32_t length, UProperty which);
void addPropertyStarts(const USetAdder *sa, UErrorCode &errorCode) const;
void addStrings(const USetAdder *sa, UProperty which, UErrorCode &errorCode) const;
enum {
// Byte offsets from the start of the data, after the generic header,
// in ascending order.
// UCPTrie=CodePointTrie, follows the indexes
IX_CPTRIE_OFFSET,
IX_RESERVED1,
IX_RESERVED2,
IX_RESERVED3,
// UCharsTrie=CharsTrie
IX_BASIC_EMOJI_TRIE_OFFSET,
IX_EMOJI_KEYCAP_SEQUENCE_TRIE_OFFSET,
IX_RGI_EMOJI_MODIFIER_SEQUENCE_TRIE_OFFSET,
IX_RGI_EMOJI_FLAG_SEQUENCE_TRIE_OFFSET,
IX_RGI_EMOJI_TAG_SEQUENCE_TRIE_OFFSET,
IX_RGI_EMOJI_ZWJ_SEQUENCE_TRIE_OFFSET,
IX_RESERVED10,
IX_RESERVED11,
IX_RESERVED12,
IX_TOTAL_SIZE,
// Not initially byte offsets.
IX_RESERVED14,
IX_RESERVED15,
IX_COUNT // 16
};
// Properties in the code point trie.
enum {
// https://www.unicode.org/reports/tr51/#Emoji_Properties
BIT_EMOJI,
BIT_EMOJI_PRESENTATION,
BIT_EMOJI_MODIFIER,
BIT_EMOJI_MODIFIER_BASE,
BIT_EMOJI_COMPONENT,
BIT_EXTENDED_PICTOGRAPHIC,
// https://www.unicode.org/reports/tr51/#Emoji_Sets
BIT_BASIC_EMOJI
};
private:
static UBool U_CALLCONV
isAcceptable(void *context, const char *type, const char *name, const UDataInfo *pInfo);
/** Input i: One of the IX_..._TRIE_OFFSET indexes into the data file indexes[] array. */
static int32_t getStringTrieIndex(int32_t i) {
return i - IX_BASIC_EMOJI_TRIE_OFFSET;
}
void load(UErrorCode &errorCode);
UBool hasBinaryPropertyImpl(UChar32 c, UProperty which) const;
UBool hasBinaryPropertyImpl(const char16_t *s, int32_t length, UProperty which) const;
UDataMemory *memory = nullptr;
UCPTrie *cpTrie = nullptr;
const char16_t *stringTries[6] = { nullptr, nullptr, nullptr, nullptr, nullptr, nullptr };
};
U_NAMESPACE_END
#endif // __EMOJIPROPS_H__
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