{"id":45457,"date":"2022-12-14T08:25:57","date_gmt":"2022-11-01T06:28:08","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45457-2\/"},"modified":"2024-04-29T05:12:58","modified_gmt":"2024-04-28T21:12:58","slug":"45457-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45457-2\/","title":{"rendered":""},"content":{"rendered":"

C\u8a00\u8a9e\u3068\u4e92\u63db\u6027\u304c\u3042\u308c\u3070\u3001rust\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092Swift\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3068link\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001enum\u306e\u5404Variant\u304c\u30c7\u30fc\u30bf\u3092\u6301\u3063\u3066\u3044\u305f\u5834\u5408\u306f\u3001\u3069\u3046\u3057\u307e\u3059\u304b? C\u8a00\u8a9e\u3067\u306fenum\u306e\u5404Variant\u306b\u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3057\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u305d\u306elink\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306f\u3053\u3061\u3089<\/p>\n

 <\/p>\n

rust\u3067\u66f8\u304b\u308c\u305fenum\u3092\u7528\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n

#[repr(C)]<\/span>\r\npub<\/span> enum<\/span> NiwakaEnum<\/span> {<\/span>\r\n    Variant1<\/span>(<\/span>i32<\/span>,<\/span> u32<\/span>),<\/span>\r\n    Variant2<\/span>,<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u3053\u308c\u3068\u30e1\u30e2\u30ea\u306e\u914d\u7f6e\u304c\u7b49\u4fa1\u306a\u8868\u73fe\u3092Swift\u3067\u7528\u610f\u3059\u308b\u306b\u306f\u3001<\/p>\n
\/\/\u3053\u308c\u306f\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002<\/span>\r\ntypedef<\/span> enum<\/span> NiwakaEnumTag<\/span> {<\/span> Variant1<\/span>,<\/span> Variant2<\/span>}<\/span> NiwakaEnumTag<\/span>;<\/span>\r\ntypedef<\/span> struct<\/span> NiwakaVariant1Fields<\/span>{<\/span>\r\n    int32_t<\/span> _0<\/span>;<\/span>\r\n    uint32_t<\/span> _1<\/span>;<\/span>\r\n}<\/span> NiwakaVariant1Fields<\/span>;<\/span>\r\nunion<\/span> NiwakaEnumFields<\/span> {<\/span> NiwakaVariant1Fields<\/span> Variant1<\/span>;};<\/span>\r\ntypedef<\/span> struct<\/span> NiwakaEnum<\/span> {<\/span> NiwakaEnumTag<\/span> tag<\/span>;<\/span> union<\/span> NiwakaEnumFields<\/span> payload<\/span>;}<\/span> NiwakaEnum<\/span>;<\/span>\r\n<\/code><\/pre>\n
Swift\u306estruct NiwakaEnum\u304c\u3001Rust\u306eenum NiwakaEnum\u3068\u30e1\u30e2\u30ea\u8868\u73fe\u304c\u540c\u3058\u3067\u3059\u3002\u8a66\u3057\u306b\u3001Rust\u5074\u3067\u7528\u610f\u3057\u305f\u95a2\u6570\u306b\u3001struct NiwakaEnum\u3092\u6e21\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
#[no_mangle]<\/span>\r\npub<\/span> extern<\/span> \"C\"<\/span> fn<\/span> print_niwaka_enum<\/span>(<\/span>niwaka_enum<\/span>:<\/span> NiwakaEnum<\/span>)<\/span> {<\/span>\r\n    match<\/span> niwaka_enum<\/span> {<\/span>\r\n        NiwakaEnum<\/span>::<\/span>Variant1<\/span>(<\/span>value_i32<\/span>,<\/span> value_u32<\/span>)<\/span> =><\/span> println!<\/span>(<\/span>\"NiwakaEnum::Variant1({}, {})\"<\/span>,<\/span> value_i32<\/span>,<\/span> value_u32<\/span>),<\/span>\r\n        NiwakaEnum<\/span>::<\/span>Variant2<\/span> =><\/span> println!<\/span>(<\/span>\"NiwakaEnum::Variant2\"<\/span>)<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u3053\u308c\u3092Swift\u5074\u3067(\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30c4\u30fc\u30eb\u9069\u7528\u3057\u3066\u307e\u305b\u3093\u3002\u30d9\u30bf\u66f8\u304d\u3067\u3059\u307f\u307e\u305b\u3093\u3002)<\/p>\n
print_niwaka_enum<\/span>(<\/span>NiwakaEnum<\/span>(<\/span>tag<\/span>:<\/span> Variant1<\/span>,<\/span> payload<\/span>:<\/span> NiwakaEnumFields<\/span>(<\/span>Variant1<\/span>:<\/span> NiwakaVariant1Fields<\/span>(<\/span>_0<\/span>:<\/span> 10<\/span>,<\/span> _1<\/span>:<\/span> 100<\/span>))))<\/span>\r\n<\/code><\/pre>\n
\u5b9f\u884c\u7d50\u679c\u306f\u3001<\/p>\n
NiwakaEnum::Variant1(10, 100)\r\n<\/code><\/pre>\n
\u3067\u3059\u3002<\/p>\n
\u306a\u305c\u540c\u3058\u306a\u306e\u304b?<\/h2>\n
\u8a73\u7d30\u306f\u3001Enums With Fields\u3068Using Imported C Structs and Unions in Swift\u3092\u8aad\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u53c2\u8003<\/h2>\n
Enums With Fields
\nUsing Imported C Structs and Unions in Swift<\/p>\n","protected":false},"excerpt":{"rendered":"
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