diff options
Diffstat (limited to 'third_party/rust/objc_exception')
| -rw-r--r-- | third_party/rust/objc_exception/.cargo-checksum.json | 1 | ||||
| -rw-r--r-- | third_party/rust/objc_exception/Cargo.toml | 25 | ||||
| -rw-r--r-- | third_party/rust/objc_exception/build.rs | 7 | ||||
| -rw-r--r-- | third_party/rust/objc_exception/extern/exception.m | 21 | ||||
| -rw-r--r-- | third_party/rust/objc_exception/src/lib.rs | 100 |
5 files changed, 0 insertions, 154 deletions
diff --git a/third_party/rust/objc_exception/.cargo-checksum.json b/third_party/rust/objc_exception/.cargo-checksum.json deleted file mode 100644 index ac8ccd308e..0000000000 --- a/third_party/rust/objc_exception/.cargo-checksum.json +++ /dev/null @@ -1 +0,0 @@ -{"files":{"Cargo.toml":"4c7727c5464280a94b263b3fbabd775838ce86794834b1adab9bfeefc8a2b731","build.rs":"6734724a6f3c46150f5a6a2adf07b9003ae6f1627fa0ee8fcafa28e9d4aafc15","extern/exception.m":"a6ee21d820126e98ee49ac34db1a6770cfd01f0fb0f71d03127e7eeff91a47c5","src/lib.rs":"24f3b04002dbf24397cc4fd2da7045d49c8b3a06101bab1918d007f7ae9b2207"},"package":"ad970fb455818ad6cba4c122ad012fae53ae8b4795f86378bce65e4f6bab2ca4"}
\ No newline at end of file diff --git a/third_party/rust/objc_exception/Cargo.toml b/third_party/rust/objc_exception/Cargo.toml deleted file mode 100644 index 7cdfacb7f7..0000000000 --- a/third_party/rust/objc_exception/Cargo.toml +++ /dev/null @@ -1,25 +0,0 @@ -# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO -# -# When uploading crates to the registry Cargo will automatically -# "normalize" Cargo.toml files for maximal compatibility -# with all versions of Cargo and also rewrite `path` dependencies -# to registry (e.g., crates.io) dependencies -# -# If you believe there's an error in this file please file an -# issue against the rust-lang/cargo repository. If you're -# editing this file be aware that the upstream Cargo.toml -# will likely look very different (and much more reasonable) - -[package] -name = "objc_exception" -version = "0.1.2" -authors = ["Steven Sheldon"] -build = "build.rs" -exclude = [".gitignore"] -description = "Rust interface for Objective-C's throw and try/catch statements." -documentation = "http://ssheldon.github.io/rust-objc/objc_exception/" -keywords = ["objective-c", "osx", "ios"] -license = "MIT" -repository = "http://github.com/SSheldon/rust-objc-exception" -[build-dependencies.cc] -version = "1" diff --git a/third_party/rust/objc_exception/build.rs b/third_party/rust/objc_exception/build.rs deleted file mode 100644 index ba728b6e16..0000000000 --- a/third_party/rust/objc_exception/build.rs +++ /dev/null @@ -1,7 +0,0 @@ -extern crate cc; - -fn main() { - cc::Build::new() - .file("extern/exception.m") - .compile("libexception.a"); -} diff --git a/third_party/rust/objc_exception/extern/exception.m b/third_party/rust/objc_exception/extern/exception.m deleted file mode 100644 index 700439ecf7..0000000000 --- a/third_party/rust/objc_exception/extern/exception.m +++ /dev/null @@ -1,21 +0,0 @@ -#include <objc/objc.h> -#include <objc/NSObject.h> - -void RustObjCExceptionThrow(id exception) { - @throw exception; -} - -int RustObjCExceptionTryCatch(void (*try)(void *), void *context, id *error) { - @try { - try(context); - if (error) { - *error = nil; - } - return 0; - } @catch (id exception) { - if (error) { - *error = [exception retain]; - } - return 1; - } -} diff --git a/third_party/rust/objc_exception/src/lib.rs b/third_party/rust/objc_exception/src/lib.rs deleted file mode 100644 index d381f60c70..0000000000 --- a/third_party/rust/objc_exception/src/lib.rs +++ /dev/null @@ -1,100 +0,0 @@ -//! Rust interface for Objective-C's `@throw` and `@try`/`@catch` statements. - -use std::mem; -use std::os::raw::{c_int, c_void}; -use std::ptr; - -#[link(name = "objc", kind = "dylib")] -extern { } - -extern { - fn RustObjCExceptionThrow(exception: *mut c_void); - fn RustObjCExceptionTryCatch(try: extern fn(*mut c_void), - context: *mut c_void, error: *mut *mut c_void) -> c_int; -} - -/// An opaque type representing any Objective-C object thrown as an exception. -pub enum Exception { } - -/// Throws an Objective-C exception. -/// The argument must be a pointer to an Objective-C object. -/// -/// Unsafe because this unwinds from Objective-C. -pub unsafe fn throw(exception: *mut Exception) -> ! { - RustObjCExceptionThrow(exception as *mut _); - unreachable!(); -} - -unsafe fn try_no_ret<F>(closure: F) -> Result<(), *mut Exception> - where F: FnOnce() { - extern fn try_objc_execute_closure<F>(closure: &mut Option<F>) - where F: FnOnce() { - // This is always passed Some, so it's safe to unwrap - let closure = closure.take().unwrap(); - closure(); - } - - let f: extern fn(&mut Option<F>) = try_objc_execute_closure; - let f: extern fn(*mut c_void) = mem::transmute(f); - // Wrap the closure in an Option so it can be taken - let mut closure = Some(closure); - let context = &mut closure as *mut _ as *mut c_void; - - let mut exception = ptr::null_mut(); - let success = RustObjCExceptionTryCatch(f, context, &mut exception); - - if success == 0 { - Ok(()) - } else { - Err(exception as *mut _) - } -} - -/// Tries to execute the given closure and catches an Objective-C exception -/// if one is thrown. -/// -/// Returns a `Result` that is either `Ok` if the closure succeeded without an -/// exception being thrown, or an `Err` with a pointer to an exception if one -/// was thrown. The exception is retained and so must be released. -/// -/// Unsafe because this encourages unwinding through the closure from -/// Objective-C, which is not safe. -pub unsafe fn try<F, R>(closure: F) -> Result<R, *mut Exception> - where F: FnOnce() -> R { - let mut value = None; - let result = { - let value_ref = &mut value; - try_no_ret(move || { - *value_ref = Some(closure()); - }) - }; - // If the try succeeded, this was set so it's safe to unwrap - result.map(|_| value.unwrap()) -} - -#[cfg(test)] -mod tests { - use std::ptr; - use super::{throw, try}; - - #[test] - fn test_try() { - unsafe { - let s = "Hello".to_string(); - let result = try(move || { - if s.len() > 0 { - throw(ptr::null_mut()); - } - s.len() - }); - assert!(result.unwrap_err() == ptr::null_mut()); - - let mut s = "Hello".to_string(); - let result = try(move || { - s.push_str(", World!"); - s - }); - assert!(result.unwrap() == "Hello, World!"); - } - } -} |