Add simple NSProcessInfo

Author: madsmtm

objc2-foundation/CHANGELOG.md

@@ -16,6 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 * Added `NSRange` methods `new`, `is_empty`, `contains` and `end`.
 * Added `NSThread` object.
 * Added `is_multi_threaded` and `is_main_thread` helper functions.
+* Added `NSProcessInfo` object.
 
 ### Changed
 * **BREAKING**: Removed the following helper traits in favor of inherent

objc2-foundation/src/lib.rs

@@ -28,6 +28,7 @@ pub use self::data::{NSData, NSMutableData};
 pub use self::dictionary::NSDictionary;
 pub use self::enumerator::{NSEnumerator, NSFastEnumeration, NSFastEnumerator};
 pub use self::object::NSObject;
+pub use self::process_info::NSProcessInfo;
 pub use self::range::NSRange;
 pub use self::string::NSString;
 pub use self::thread::{is_main_thread, is_multi_threaded, NSThread};
@@ -51,6 +52,7 @@ mod data;
 mod dictionary;
 mod enumerator;
 mod object;
+mod process_info;
 mod range;
 mod string;
 mod thread;

objc2-foundation/src/process_info.rs

@@ -0,0 +1,35 @@
+use core::ptr::NonNull;
+
+use objc2::msg_send;
+use objc2::rc::{Id, Shared};
+
+use crate::{NSObject, NSString};
+
+object! {
+    /// A collection of information about the current process.
+    ///
+    /// See [Apple's documentation](https://developer.apple.com/documentation/foundation/nsprocessinfo?language=objc).
+    unsafe pub struct NSProcessInfo: NSObject;
+
+    // TODO: This contains a lot more important functionality!
+}
+
+// The documentation explicitly states:
+// > NSProcessInfo is thread-safe in macOS 10.7 and later.
+unsafe impl Send for NSProcessInfo {}
+unsafe impl Sync for NSProcessInfo {}
+
+impl NSProcessInfo {
+    pub fn process_info() -> Id<NSProcessInfo, Shared> {
+        // currentThread is @property(strong), what does that mean?
+        let obj: *mut Self = unsafe { msg_send![Self::class(), processInfo] };
+        let obj = unsafe { NonNull::new_unchecked(obj) };
+        unsafe { Id::retain(obj) }
+    }
+
+    pub fn process_name(&self) -> Id<NSString, Shared> {
+        let obj: *mut NSString = unsafe { msg_send![Self::class(), processName] };
+        let obj = NonNull::new(obj).unwrap();
+        unsafe { Id::retain(obj) }
+    }
+}