Struct abi_stable::type_layout::tagging::Tag [−][src]
#[repr(C)]pub struct Tag { /* fields omitted */ }
Expand description
Tag is a dynamically typed data structure used to encode extra properties about a type in its layout constant.
For more information look at the module-level documentation
Implementations
Converts the Tag
into a CheckableTag
,
so as to check Tag
s for compatibility.
Trait Implementations
Gets the type layout of Self
(the type that implements ExtraChecks) Read more
fn check_compatibility(
&self,
_layout_containing_self: &'static TypeLayout,
layout_containing_other: &'static TypeLayout,
checker: TypeCheckerMut<'_>
) -> RResult<(), ExtraChecksError>
fn check_compatibility(
&self,
_layout_containing_self: &'static TypeLayout,
layout_containing_other: &'static TypeLayout,
checker: TypeCheckerMut<'_>
) -> RResult<(), ExtraChecksError>
Checks that self
is compatible another type which implements ExtraChecks. Read more
Returns the TypeLayout
s owned or referenced by self
. Read more
fn combine(
&self,
_other: ExtraChecksRef<'_>,
_checker: TypeCheckerMut<'_>
) -> RResult<ROption<ExtraChecksBox>, ExtraChecksError>
fn combine(
&self,
_other: ExtraChecksRef<'_>,
_checker: TypeCheckerMut<'_>
) -> RResult<ROption<ExtraChecksBox>, ExtraChecksError>
Combines this ExtraChecks trait object with another one. Read more
type StaticEquivalent = _static_Tag
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
type IsNonZeroType = False
type IsNonZeroType = False
Whether this type has a single invalid bit-pattern. Read more
The layout of the type provided by implementors.
const
-equivalents of the associated types.
Auto Trait Implementations
impl RefUnwindSafe for Tag
impl UnwindSafe for Tag
Blanket Implementations
Mutably borrows from an owned value. Read more
type ROwned = T
type ROwned = T
The owned type, stored in RCow::Owned
fn downcast_with_layout<F, R, E>(
layout_containing_other: &'static TypeLayout,
checker: TypeCheckerMut<'_>,
f: F
) -> RResult<R, ExtraChecksError> where
Self: 'static,
F: FnOnce(&Self, TypeCheckerMut<'_>) -> Result<R, E>,
E: Send + Sync + ErrorTrait + 'static,
fn downcast_with_layout<F, R, E>(
layout_containing_other: &'static TypeLayout,
checker: TypeCheckerMut<'_>,
f: F
) -> RResult<R, ExtraChecksError> where
Self: 'static,
F: FnOnce(&Self, TypeCheckerMut<'_>) -> Result<R, E>,
E: Send + Sync + ErrorTrait + 'static,
Accesses the ExtraChecks
field in layout_containing_other
, downcasted into Self
. Read more
fn downcast_with_object<F, R, E>(
other: ExtraChecksRef<'_>,
checker: TypeCheckerMut<'_>,
f: F
) -> RResult<R, ExtraChecksError> where
F: FnOnce(&Self, TypeCheckerMut<'_>) -> Result<R, E>,
E: Send + Sync + ErrorTrait + 'static,
fn downcast_with_object<F, R, E>(
other: ExtraChecksRef<'_>,
checker: TypeCheckerMut<'_>,
f: F
) -> RResult<R, ExtraChecksError> where
F: FnOnce(&Self, TypeCheckerMut<'_>) -> Result<R, E>,
E: Send + Sync + ErrorTrait + 'static,
Allows one to access other
downcast into Self
. Read more
type ForSelf = WithMetadata_<T, T>
type ForSelf = WithMetadata_<T, T>
This is always WithMetadata_<Self, Self>
Compares the address of self
with the address of other
. Read more
Emulates the pipeline operator, allowing method syntax in more places. Read more
The same as piped
except that the function takes &Self
Useful for functions that take &Self
instead of Self
. Read more
The same as piped
, except that the function takes &mut Self
.
Useful for functions that take &mut Self
instead of Self
. Read more
Mutates self using a closure taking self by mutable reference, passing it along the method chain. Read more
Observes the value of self, passing it along unmodified. Useful in long method chains. Read more
Performs a conversion with Into
.
using the turbofish .into_::<_>()
syntax. Read more
Performs a reference to reference conversion with AsRef
,
using the turbofish .as_ref_::<_>()
syntax. Read more
Performs a mutable reference to mutable reference conversion with AsMut
,
using the turbofish .as_mut_::<_>()
syntax. Read more
unsafe fn transmute_element<T>(
self
) -> <Self as CanTransmuteElement<T>>::TransmutedPtr where
Self: CanTransmuteElement<T>,
unsafe fn transmute_element<T>(
self
) -> <Self as CanTransmuteElement<T>>::TransmutedPtr where
Self: CanTransmuteElement<T>,
Transmutes the element type of this pointer.. Read more
type Type = T
type Type = T
This is always Self
.
Converts a value back to the original type.
Converts a mutable reference back to the original type.
Converts a box back to the original type.
Converts an Arc back to the original type. Read more
Converts an Rc back to the original type. Read more
Converts a value back to the original type.
Converts a reference back to the original type.
Converts a mutable reference back to the original type.
Converts a box back to the original type.
Converts an Arc back to the original type.
Converts an Rc back to the original type.