Struct objc2::exception::Exception

pub struct Exception(/* private fields */);

An Objective-C exception.

While highly recommended that any exceptions you intend to throw are subclasses of NSException, this is not required by the runtime (similar to how Rust can panic with arbitary payloads using panic_any).

Methods from Deref<Target = AnyObject>

pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

pub unsafe fn get_ivar<T: Encode>(&self, name: &str) -> &T

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

Trait Implementations

impl AsRef<AnyObject> for Exception

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl Debug for Exception

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for Exception

type Target = AnyObject

The resulting type after dereferencing.

fn deref(&self) -> &AnyObject

Dereferences the value.

impl Display for Exception

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Exception

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports.

impl RefEncode for Exception

const ENCODING_REF: Encoding = Encoding::Object

The Objective-C type-encoding for a reference of this type.

impl Message for Exception

impl RefUnwindSafe for Exception

impl UnwindSafe for Exception