#[non_exhaustive]pub enum CopyProtectionAction {
Passthrough,
Strip,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against CopyProtectionAction
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let copyprotectionaction = unimplemented!();
match copyprotectionaction {
CopyProtectionAction::Passthrough => { /* ... */ },
CopyProtectionAction::Strip => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when copyprotectionaction
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant CopyProtectionAction::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
CopyProtectionAction::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant CopyProtectionAction::NewFeature
is defined.
Specifically, when copyprotectionaction
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on CopyProtectionAction::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms. The action to take on copy and redistribution control XDS packets. If you select PASSTHROUGH, packets will not be changed. If you select STRIP, any packets will be removed in output captions.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Passthrough
Strip
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl CopyProtectionAction
impl CopyProtectionAction
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for CopyProtectionAction
impl AsRef<str> for CopyProtectionAction
source§impl Clone for CopyProtectionAction
impl Clone for CopyProtectionAction
source§fn clone(&self) -> CopyProtectionAction
fn clone(&self) -> CopyProtectionAction
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for CopyProtectionAction
impl Debug for CopyProtectionAction
source§impl Display for CopyProtectionAction
impl Display for CopyProtectionAction
source§impl From<&str> for CopyProtectionAction
impl From<&str> for CopyProtectionAction
source§impl FromStr for CopyProtectionAction
impl FromStr for CopyProtectionAction
source§impl Hash for CopyProtectionAction
impl Hash for CopyProtectionAction
source§impl Ord for CopyProtectionAction
impl Ord for CopyProtectionAction
source§fn cmp(&self, other: &CopyProtectionAction) -> Ordering
fn cmp(&self, other: &CopyProtectionAction) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for CopyProtectionAction
impl PartialEq for CopyProtectionAction
source§fn eq(&self, other: &CopyProtectionAction) -> bool
fn eq(&self, other: &CopyProtectionAction) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for CopyProtectionAction
impl PartialOrd for CopyProtectionAction
source§fn partial_cmp(&self, other: &CopyProtectionAction) -> Option<Ordering>
fn partial_cmp(&self, other: &CopyProtectionAction) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for CopyProtectionAction
impl StructuralPartialEq for CopyProtectionAction
Auto Trait Implementations§
impl Freeze for CopyProtectionAction
impl RefUnwindSafe for CopyProtectionAction
impl Send for CopyProtectionAction
impl Sync for CopyProtectionAction
impl Unpin for CopyProtectionAction
impl UnwindSafe for CopyProtectionAction
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more