pub enum Argument<Id> {
Int(i32),
Uint(u32),
Fixed(i32),
Str(Box<CString, Global>),
Object(Id),
NewId(Id),
Array(Box<Vec<u8, Global>, Global>),
Fd(i32),
}
Expand description
Enum of possible argument of the protocol
Variants
Int(i32)
An integer argument. Represented by a i32
.
Uint(u32)
An unsigned integer argument. Represented by a u32
.
Fixed(i32)
A signed fixed point number with 1/256 precision
Str(Box<CString, Global>)
CString
The value is boxed to reduce the stack size of Argument. The performance
impact is negligible as string
arguments are pretty rare in the protocol.
Object(Id)
Id of a wayland object
NewId(Id)
Id of a newly created wayland object
Array(Box<Vec<u8, Global>, Global>)
Vec
The value is boxed to reduce the stack size of Argument. The performance
impact is negligible as array
arguments are pretty rare in the protocol.
Fd(i32)
A file descriptor argument. Represented by a RawFd
.
Implementations
Retrieve the type of a given argument instance
Trait Implementations
Auto Trait Implementations
impl<Id> RefUnwindSafe for Argument<Id> where
Id: RefUnwindSafe,
impl<Id> UnwindSafe for Argument<Id> where
Id: UnwindSafe,
Blanket Implementations
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more