{"payload":{"feedbackUrl":"https://github.com/orgs/community/discussions/53140","repo":{"id":427836269,"defaultBranch":"master","name":"swift-bridge","ownerLogin":"chinedufn","currentUserCanPush":false,"isFork":false,"isEmpty":false,"createdAt":"2021-11-14T04:24:28.000Z","ownerAvatar":"https://avatars.githubusercontent.com/u/2099811?v=4","public":true,"private":false,"isOrgOwned":false},"refInfo":{"name":"","listCacheKey":"v0:1714360816.0","currentOid":""},"activityList":{"items":[{"before":"717fcef70d3c293c2fd8b962ad678da18b10a3c3","after":"34ce1ffb6bc5a54730bf60cf177042e1f4e479ff","ref":"refs/heads/master","pushedAt":"2024-06-21T08:59:10.000Z","pushType":"pr_merge","commitsCount":1,"pusher":{"login":"chinedufn","name":"Chinedu Francis Nwafili","path":"/chinedufn","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/2099811?s=80&v=4"},"commit":{"message":"Suppress dead_code warning when returning `-> Result<*, TransparentType>` (#278)\n\nIn Rust 1.79.0, dead code warnings are emitted from enums where the compiler does not infer that wrapped data is used, even when the enum has been annotated with `#[repr(C]`. This warning triggers in `swift-bridge` when defining transparent structs or enums that will be returned in error results.\r\n\r\nThis appears to be a regression in the `dead_code` rustc lint. Pending upstream fixes to rustc, this change to `swift-bridge` annotates generated result enums with `#[allow(unused)]`.\r\n\r\nFixes #270\r\n\r\n```\r\nerror: field `0` is never read\r\n   |\r\n1  | #[swift_bridge::bridge]\r\n   | ----------------------- field in this variant\r\n...\r\n3  |     enum ResultTransparentEnum {\r\n   |          ^^^^^^^^^^^^^^^^^^^^^\r\n   |\r\nhelp: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field\r\n   |\r\n3  |     enum () {\r\n   |          ~~\r\n```\r\n\r\n## Example bridge\r\n\r\nThe following bridge code is the minimal reproduction case:\r\n\r\n``` rust\r\n#[swift_bridge::bridge]\r\nmod ffi {\r\n    #[swift_bridge(swift_repr = \"struct\")]\r\n    struct TransparentErrorStruct(pub String);\r\n\r\n    extern \"Rust\" {\r\n        fn rust_func_returns_result_transparent_struct(\r\n            succeed: bool\r\n        ) -> Result<(), TransparentErrorStruct>;\r\n    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`add_custom_target` API).\r\n\r\n## Notes\r\n\r\nOne caveat of the current implementation is that one would have to duplicate the crate name in the invocation line (the first argument).\r\n\r\nThis is fine for cases like mine, where this would be taken from the build system anyway, but it may not be handy for other cases.\r\n\r\nThe package name can be automatically deduced if one's running in the correct directory (the package root).\r\nIn this case, we can parse the `cargo read-manifest` output and get the name from there.\r\n\r\nThis would require a new dependency, though (`serde_json`), so I decided not to do this just yet, but if this sounds okay to you, I'll go ahead and implement this as well.\r\n\r\n## Examples\r\n\r\nSingle file:\r\n```shell\r\nswift-bridge-cli parse-bridges --crate-name my-awesome-crate -f src/lib.rs -o generated\r\n```\r\n\r\nMultiple files:\r\n```shell\r\nswift-bridge-cli parse-bridges --crate-name my-superb-crate \\\r\n-f src/lib.rs \\\r\n-f src/some_other_file.rs \\\r\n-o generated\r\n```","shortMessageHtmlLink":"Add parse-bridges CLI subcommand (<a class=\"issue-link js-issue-link\" data-error-text=\"Failed to load title\" data-id=\"2290484037\" data-permission-text=\"Title is private\" data-url=\"https://github.com/chinedufn/swift-bridge/issues/274\" data-hovercard-type=\"pull_request\" data-hovercard-url=\"/chinedufn/swift-bridge/pull/274/hovercard\" href=\"https://github.com/chinedufn/swift-bridge/pull/274\">#274</a>)"}},{"before":"87dbea3c28d4a96d9195bd3a70fdecfd85fd8f5c","after":"ef01d21001914b79e0384627535098e15f87f096","ref":"refs/heads/master","pushedAt":"2024-04-29T03:20:19.000Z","pushType":"push","commitsCount":1,"pusher":{"login":"chinedufn","name":"Chinedu Francis 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`Option<SwiftType>` to\r\n`extern \"Rust\"` functions.\r\n\r\nFor example, the following bridge module would lead to memory leaks:\r\n\r\n```rust\r\n#[swift_bridge::bridge]\r\nmod ffi {\r\n    extern \"Swift\" {\r\n        type SomeSwiftType;\r\n    }\r\n\r\n    extern \"Rust\" {\r\n        fn rust_fn_takes_swift_type(arg: Option<SomeSwiftType>);\r\n    }\r\n}\r\n```\r\n\r\nWhen the above `rust_fn_takes_swift_type` function was called the\r\n`SomeSwiftType` would be retained twice.\r\n\r\nWhen the Rust side later freed `SomeSwiftType` the retain count would\r\ndrop from 2 to 1.\r\n\r\nSince there was still 1 retain, `SomeSwiftType` would never get freed.\r\n\r\n## Impact\r\n\r\nSupport for passing `Option<SomeSwiftType>` from Swift to Rust was\r\nintroduced earlier today.\r\n\r\nThis functionality was released in `swift-bridge = \"0.1.54\"`.\r\n\r\nW will be deploying `swift-bridge = \"0.1.55\" today. \"0.1.55\" will\r\ncontain a fix for the leak.\r\n\r\nBecause support for `Option<SomeSwiftType>` was released today, and the\r\nfix will be released today, it should be unlikely that anyone has\r\nexperienced this leak.\r\n\r\nWe will yank \"0.1.54\" from \"crates.io\".\r\n\r\nAll users (probably zero) that are bridging `Option<SomeSwiftType>` should\r\nupgrade from \"0.1.54\" to \"0.1.55\" to.\r\n\r\n## Solution\r\n\r\nThis commit does the following:\r\n\r\n- When passing ownership of a Swift type from Swift to Rust we now\r\n  increment the retain count by one. Before this commit we were\r\n  incrementing it by two.\r\n\r\n- When passing ownership of a Swift type from Rust to Swift we avoid\r\n  calling the the Rust handle's `Drop` implementation. We avoid this by\r\n  using `std::mem::forget`.\r\n  This ensures that the retain count does not get decremented.\r\n\r\n- When passing ownership of a Swift type from Rust to Swift the Swift\r\n  side does not increment the retain count.\r\n\r\nWith all of the above we should now be able to:\r\n\r\n- Create an `Option<SwiftType>` Swift type on the Swift side\r\n\r\n- Pass ownership of the `Option<SwiftType> to Rust. The retain count is now 1.\r\n\r\n- Pass ownership back to Swift. The retain count is still 1.\r\n\r\nBefore this commit, when passing an `Option<SwiftType>` it was:\r\n\r\n- Create a Swift type on the Swift side\r\n\r\n- Pass `Option<SwiftType>` to Rust. Retain count is now 2\r\n\r\n- Rust passes ownership back to Swift. Retain count is now 1\r\n\r\n- Retain count never hits 0. 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Before this commit we were\n  incrementing it by two.\n\n- When passing ownership of a Swift type from Rust to Swift we avoid\n  calling the the Rust handle's `Drop` implementation. We avoid this by\n  using `std::mem::forget`.\n  This ensures that the retain count does not get decremented.\n\n- When passing ownership of a Swift type from Rust to Swift the Swift\n  side does not increment the retain count.\n\nWith all of the above we should now be able to:\n\n- Create an `Option<SwiftType>` Swift type on the Swift side\n\n- Pass ownership of the `Option<SwiftType> to Rust. The retain count is now 1.\n\n- Pass ownership back to Swift. The retain count is still 1.\n\nBefore this commit, when passing an `Option<SwiftType>` it was:\n\n- Create a Swift type on the Swift side\n\n- Pass `Option<SwiftType>` to Rust. Retain count is now 2\n\n- Rust passes ownership back to Swift. Retain count is now 1\n\n- Retain count never hits 0. 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fn opt_str_function(arg: Option<&str>);\r\n    }\r\n}\r\n```\r\n\r\nNote that you can not yet return `-> Option<&str>` from Swift.\r\n\r\nThis is an uncommon use case, so we're waiting until someone actually\r\nneeds it.","shortMessageHtmlLink":"Swift Option&lt;String&gt; and Option&lt;&amp;str&gt; (<a class=\"issue-link js-issue-link\" data-error-text=\"Failed to load title\" data-id=\"2206973451\" data-permission-text=\"Title is private\" data-url=\"https://github.com/chinedufn/swift-bridge/issues/264\" data-hovercard-type=\"pull_request\" data-hovercard-url=\"/chinedufn/swift-bridge/pull/264/hovercard\" href=\"https://github.com/chinedufn/swift-bridge/pull/264\">#264</a>)"}},{"before":"9311e42d1011e6e4604f7cb7fa8cc32e8d68d3ce","after":"4987f157e6ee9b63bdeadc451ec3b131687f8927","ref":"refs/heads/option-string","pushedAt":"2024-03-26T00:34:05.000Z","pushType":"force_push","commitsCount":0,"pusher":{"login":"chinedufn","name":"Chinedu Francis 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waiting until someone actually\nneeds it.","shortMessageHtmlLink":"Swift Option&lt;String&gt; and Option&lt;&amp;str&gt;"}},{"before":"ebd943574b72488636d026a105db98e5ad48f7f5","after":"021f042af92de93e4d27da313bc03fc10bfd1c54","ref":"refs/heads/option-string","pushedAt":"2024-03-26T00:21:25.000Z","pushType":"force_push","commitsCount":0,"pusher":{"login":"chinedufn","name":"Chinedu Francis Nwafili","path":"/chinedufn","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/2099811?s=80&v=4"},"commit":{"message":"Swift Option<String> and Option<&str>\n\nThis commit adds support for passing `Option<String>` to and from\n`extern \"Swift\"` functions, as well as for passing `Option<&str>` to\nextern \"Swift\" functions.\n\nFor example, the following is now possible:\n\n```rust\n#[swift_bridge::bridge]\nmod ffi {\n    extern \"Swift\" {\n        fn opt_string_function(arg: Option<String>) -> Option<String>;\n\n        fn opt_str_function(arg: Option<&str>);\n    }\n}\n```\n\nNote that you can not yet return `-> Option<&str>` from Swift.\n\nThis is an uncommon use case, so we're waiting until someone actually\nneeds it.","shortMessageHtmlLink":"Swift Option&lt;String&gt; and Option&lt;&amp;str&gt;"}},{"before":null,"after":"ebd943574b72488636d026a105db98e5ad48f7f5","ref":"refs/heads/option-string","pushedAt":"2024-03-26T00:21:02.000Z","pushType":"branch_creation","commitsCount":0,"pusher":{"login":"chinedufn","name":"Chinedu Francis Nwafili","path":"/chinedufn","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/2099811?s=80&v=4"},"commit":{"message":"Swift Option<String> and Option<&str>\n\nThis commit adds support for passing `Option<String>` to and from\n`extern \"Swift\" functions, as well as for passing `Option<&str>` to\nextern \"Swift\" functions.\n\nFor example, the following is now possible:\n\n```rust\n#[swift_bridge::bridge]\nmod ffi {\n    extern \"Swift\" {\n        fn opt_string_function(arg: Option<String>) -> Option<String>;\n\n        fn opt_str_function(arg: Option<&str>);\n    }\n}\n```\n\nNote that you can not yet return `-> Option<&str>` from Swift.\n\nThis is an uncommon use case, so we're waiting until someone actually\nneeds it.","shortMessageHtmlLink":"Swift Option&lt;String&gt; and Option&lt;&amp;str&gt;"}},{"before":"dd5bef56af28db4f1a1244d86115def6abede931","after":"53b118d17f2f1a2922e969de528b99a2ffbc7dde","ref":"refs/heads/master","pushedAt":"2024-03-15T00:55:20.000Z","pushType":"pr_merge","commitsCount":1,"pusher":{"login":"chinedufn","name":"Chinedu Francis Nwafili","path":"/chinedufn","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/2099811?s=80&v=4"},"commit":{"message":"Add test cases for Option<&T> and fix rust codegen (#257)\n\nAdd test cases for Option<&T> and fix rust codegen\r\n\r\nCurrently swift-bridge only has tests for Option<T> - this adds test\r\ncases for Option<&T> and fixes a bug in rust codegen that does not\r\ncorrectly translate Option<&T>.\r\n\r\nThis is now possible:\r\n\r\n```rust\r\nmod ffi {\r\n  extern \"Rust\" {\r\n    type SomeType;\r\n\r\n    fn my_func(arg: Option<&SomeType>) -> Option<&SomeType>;\r\n  }\r\n}\r\n```","shortMessageHtmlLink":"Add test cases for Option&lt;&amp;T&gt; and fix rust codegen (<a class=\"issue-link js-issue-link\" data-error-text=\"Failed to load title\" data-id=\"2185193933\" data-permission-text=\"Title is private\" data-url=\"https://github.com/chinedufn/swift-bridge/issues/257\" data-hovercard-type=\"pull_request\" data-hovercard-url=\"/chinedufn/swift-bridge/pull/257/hovercard\" href=\"https://github.com/chinedufn/swift-bridge/pull/257\">#257</a>)"}},{"before":"fc78618dc56c86fcd2e01c443e33ca50180f756f","after":null,"ref":"refs/heads/fix-improper-ctypes-warning","pushedAt":"2024-03-08T02:43:56.000Z","pushType":"branch_deletion","commitsCount":0,"pusher":{"login":"chinedufn","name":"Chinedu Francis 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module:\r\n\r\n```rust\r\n#[swift_bridge::bridge]\r\nmod ffi {\r\n    struct SharedStruct {\r\n        field: String\r\n    }\r\n\r\n    extern \"Swift\" {\r\n        fn swift_func() -> SharedStruct;\r\n    }\r\n}\r\n```\r\n\r\nwould lead to the following warning:\r\n\r\n```console\r\nwarning: `extern` block uses type `RustString`, which is not FFI-safe\r\n --> my_file.rs:4:12\r\n  |\r\n4 |     struct SharedStruct {\r\n  |            ^^^^^^^^^^^^ not FFI-safe\r\n  |\r\n  = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct\r\n  = note: this struct has unspecified layout\r\n  = note: `#[warn(improper_ctypes)]` on by default\r\n```\r\n\r\nThis warning was a bit misleading in that it made it seem like the\r\n`RustString` needed a `#[repr(C)]` annotation.\r\n\r\nThe real issue was that the generated FFI representation type:\r\n\r\n```rust\r\n#[repr(C)]\r\nstruct __swift_bridge__SharedStruct {\r\n    field: *mut std::string::RustString\r\n}\r\n```\r\nwas triggering a warning because the Rust compiler can't know that the\r\nnon-FFI safe `std::string::RustString` is not being dereferenced on the\r\nSwift side.","shortMessageHtmlLink":"Fix <code>improper_ctypes</code> warning (<a class=\"issue-link js-issue-link\" data-error-text=\"Failed to load title\" data-id=\"2175141143\" data-permission-text=\"Title is private\" data-url=\"https://github.com/chinedufn/swift-bridge/issues/254\" data-hovercard-type=\"pull_request\" data-hovercard-url=\"/chinedufn/swift-bridge/pull/254/hovercard\" href=\"https://github.com/chinedufn/swift-bridge/pull/254\">#254</a>)"}},{"before":"edac4cf9908d1874d514e91cdca82d6482c1c3db","after":"fc78618dc56c86fcd2e01c443e33ca50180f756f","ref":"refs/heads/fix-improper-ctypes-warning","pushedAt":"2024-03-08T02:31:52.000Z","pushType":"force_push","commitsCount":0,"pusher":{"login":"chinedufn","name":"Chinedu Francis Nwafili","path":"/chinedufn","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/2099811?s=80&v=4"},"commit":{"message":"Fix `improper_ctypes` warning\n\nThis commit fixes an `improper_ctypes` warning when bridging transparent\nstructs that contain non FFI safe types.\n\nWhile transparent structs that contained non FFI safe types were being\npassed in an FFI safe way before this commit, the Rust compiler could\nnot know that what we were doing was FFI safe.\n\nThis commit uses `#[allow(improper_ctypes)]` to silence the lint.\n\n## Illustration\n\nBefore this commit the following bridge module:\n\n```rust\n#[swift_bridge::bridge]\nmod ffi {\n    struct SharedStruct {\n        field: String\n    }\n\n    extern \"Swift\" {\n        fn swift_func() -> SharedStruct;\n    }\n}\n```\n\nwould lead to the following warning:\n\n```console\nwarning: `extern` block uses type `RustString`, which is not FFI-safe\n --> my_file.rs:4:12\n  |\n4 |     struct SharedStruct {\n  |            ^^^^^^^^^^^^ not FFI-safe\n  |\n  = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct\n  = note: this struct has unspecified layout\n  = note: `#[warn(improper_ctypes)]` on by default\n```\n\nThis warning was a bit misleading in that it made it seem like the\n`RustString` needed a `#[repr(C)]` annotation.\n\nThe real issue was that the generated FFI representation type:\n\n```rust\n#[repr(C)]\nstruct __swift_bridge__SharedStruct {\n    field: *mut std::string::RustString\n}\n```\nwas triggering a warning because the Rust compiler can't know that the\nnon-FFI safe `std::string::RustString` is not being dereferenced on the\nSwift side.","shortMessageHtmlLink":"Fix <code>improper_ctypes</code> warning"}},{"before":"bcd17dceac53e10d32415f7fddbd7d59d113802d","after":"edac4cf9908d1874d514e91cdca82d6482c1c3db","ref":"refs/heads/fix-improper-ctypes-warning","pushedAt":"2024-03-08T02:25:16.000Z","pushType":"force_push","commitsCount":0,"pusher":{"login":"chinedufn","name":"Chinedu Francis Nwafili","path":"/chinedufn","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/2099811?s=80&v=4"},"commit":{"message":"Fix `improper_ctypes` warning\n\nThis commit fixes an `improper_ctypes` warning when bridging transparent\nstructs that contain non FFI safe types.\n\nWhile transparent structs that contained non FFI safe types were being\npassed in an FFI safe way before this commit, the Rust compiler could\nnot know that what we were doing was FFI safe.\n\nThis commit uses `#[allow(improper_ctypes)]` to silence the lint.\n\n## Illustration\n\nBefore this commit the following bridge module:\n\n```rust\n#[swift_bridge::bridge]\nmod ffi {\n    struct SharedStruct {\n        field: String\n    }\n\n    extern \"Swift\" {\n        fn swift_func() -> SharedStruct;\n    }\n}\n```\n\nwould lead to the following warning:\n\n```console\nwarning: `extern` block uses type `RustString`, which is not FFI-safe\n --> my_file.rs:4:12\n  |\n4 |     struct SharedStruct {\n  |            ^^^^^^^^^^^^ not FFI-safe\n  |\n  = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct\n  = note: this struct has unspecified layout\n  = note: `#[warn(improper_ctypes)]` on by default\n```\n\nThis warning was a bit misleading in that it made it seem like the\n`RustString` needed a `#[repr(C)]` annotation.\n\nThe real issue was that the generated FFI representation type:\n\n```rust\n#[repr(C)]\nstruct __swift_bridge__SharedStruct {\n    field: *mut std::string::RustString\n}\n```\nwas triggering a warning because the Rust compiler can't know that the\nnon-FFI safe `std::string::RustString` is not being dereferenced on the\nSwift side.","shortMessageHtmlLink":"Fix <code>improper_ctypes</code> warning"}}],"hasNextPage":true,"hasPreviousPage":false,"activityType":"all","actor":null,"timePeriod":"all","sort":"DESC","perPage":30,"cursor":"djE6ks8AAAAEa2SV8wA","startCursor":null,"endCursor":null}},"title":"Activity · chinedufn/swift-bridge"}