// © 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__