#[non_exhaustive]pub enum WorkflowState {
Assigned,
Deferred,
InProgress,
New,
Resolved,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against WorkflowState
, 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 workflowstate = unimplemented!();
match workflowstate {
WorkflowState::Assigned => { /* ... */ },
WorkflowState::Deferred => { /* ... */ },
WorkflowState::InProgress => { /* ... */ },
WorkflowState::New => { /* ... */ },
WorkflowState::Resolved => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when workflowstate
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant WorkflowState::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
WorkflowState::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 WorkflowState::NewFeature
is defined.
Specifically, when workflowstate
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on WorkflowState::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.
Variants (Non-exhaustive)ยง
This enum is marked as non-exhaustive
Assigned
Deferred
InProgress
New
Resolved
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.
Implementationsยง
Sourceยงimpl WorkflowState
impl WorkflowState
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 Implementationsยง
Sourceยงimpl AsRef<str> for WorkflowState
impl AsRef<str> for WorkflowState
Sourceยงimpl Clone for WorkflowState
impl Clone for WorkflowState
Sourceยงfn clone(&self) -> WorkflowState
fn clone(&self) -> WorkflowState
1.0.0 ยท Sourceยงfn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSourceยงimpl Debug for WorkflowState
impl Debug for WorkflowState
Sourceยงimpl Display for WorkflowState
impl Display for WorkflowState
Sourceยงimpl From<&str> for WorkflowState
impl From<&str> for WorkflowState
Sourceยงimpl FromStr for WorkflowState
impl FromStr for WorkflowState
Sourceยงimpl Hash for WorkflowState
impl Hash for WorkflowState
Sourceยงimpl Ord for WorkflowState
impl Ord for WorkflowState
Sourceยงfn cmp(&self, other: &WorkflowState) -> Ordering
fn cmp(&self, other: &WorkflowState) -> Ordering
1.21.0 ยท Sourceยงfn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Sourceยงimpl PartialEq for WorkflowState
impl PartialEq for WorkflowState
Sourceยงimpl PartialOrd for WorkflowState
impl PartialOrd for WorkflowState
impl Eq for WorkflowState
impl StructuralPartialEq for WorkflowState
Auto Trait Implementationsยง
impl Freeze for WorkflowState
impl RefUnwindSafe for WorkflowState
impl Send for WorkflowState
impl Sync for WorkflowState
impl Unpin for WorkflowState
impl UnwindSafe for WorkflowState
Blanket Implementationsยง
Sourceยงimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Sourceยงfn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Sourceยงimpl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Sourceยงimpl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
Sourceยงimpl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Sourceยงimpl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Sourceยงfn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.Sourceยงimpl<T> Instrument for T
impl<T> Instrument for T
Sourceยงfn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Sourceยงfn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Sourceยงimpl<T> IntoEither for T
impl<T> IntoEither for T
Sourceยงfn 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 moreSourceยงfn 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 moreSourceยงimpl<T> Paint for Twhere
T: ?Sized,
impl<T> Paint for Twhere
T: ?Sized,
Sourceยงfn fg(&self, value: Color) -> Painted<&T>
fn fg(&self, value: Color) -> Painted<&T>
Returns a styled value derived from self
with the foreground set to
value
.
This method should be used rarely. Instead, prefer to use color-specific
builder methods like red()
and
green()
, which have the same functionality but are
pithier.
ยงExample
Set foreground color to white using fg()
:
use yansi::{Paint, Color};
painted.fg(Color::White);
Set foreground color to white using white()
.
use yansi::Paint;
painted.white();
Sourceยงfn bright_black(&self) -> Painted<&T>
fn bright_black(&self) -> Painted<&T>
Sourceยงfn bright_red(&self) -> Painted<&T>
fn bright_red(&self) -> Painted<&T>
Sourceยงfn bright_green(&self) -> Painted<&T>
fn bright_green(&self) -> Painted<&T>
Sourceยงfn bright_yellow(&self) -> Painted<&T>
fn bright_yellow(&self) -> Painted<&T>
Sourceยงfn bright_blue(&self) -> Painted<&T>
fn bright_blue(&self) -> Painted<&T>
Sourceยงfn bright_magenta(&self) -> Painted<&T>
fn bright_magenta(&self) -> Painted<&T>
Sourceยงfn bright_cyan(&self) -> Painted<&T>
fn bright_cyan(&self) -> Painted<&T>
Sourceยงfn bright_white(&self) -> Painted<&T>
fn bright_white(&self) -> Painted<&T>
Sourceยงfn bg(&self, value: Color) -> Painted<&T>
fn bg(&self, value: Color) -> Painted<&T>
Returns a styled value derived from self
with the background set to
value
.
This method should be used rarely. Instead, prefer to use color-specific
builder methods like on_red()
and
on_green()
, which have the same functionality but
are pithier.
ยงExample
Set background color to red using fg()
:
use yansi::{Paint, Color};
painted.bg(Color::Red);
Set background color to red using on_red()
.
use yansi::Paint;
painted.on_red();
Sourceยงfn on_primary(&self) -> Painted<&T>
fn on_primary(&self) -> Painted<&T>
Sourceยงfn on_magenta(&self) -> Painted<&T>
fn on_magenta(&self) -> Painted<&T>
Sourceยงfn on_bright_black(&self) -> Painted<&T>
fn on_bright_black(&self) -> Painted<&T>
Sourceยงfn on_bright_red(&self) -> Painted<&T>
fn on_bright_red(&self) -> Painted<&T>
Sourceยงfn on_bright_green(&self) -> Painted<&T>
fn on_bright_green(&self) -> Painted<&T>
Sourceยงfn on_bright_yellow(&self) -> Painted<&T>
fn on_bright_yellow(&self) -> Painted<&T>
Sourceยงfn on_bright_blue(&self) -> Painted<&T>
fn on_bright_blue(&self) -> Painted<&T>
Sourceยงfn on_bright_magenta(&self) -> Painted<&T>
fn on_bright_magenta(&self) -> Painted<&T>
Sourceยงfn on_bright_cyan(&self) -> Painted<&T>
fn on_bright_cyan(&self) -> Painted<&T>
Sourceยงfn on_bright_white(&self) -> Painted<&T>
fn on_bright_white(&self) -> Painted<&T>
Sourceยงfn attr(&self, value: Attribute) -> Painted<&T>
fn attr(&self, value: Attribute) -> Painted<&T>
Enables the styling Attribute
value
.
This method should be used rarely. Instead, prefer to use
attribute-specific builder methods like bold()
and
underline()
, which have the same functionality
but are pithier.
ยงExample
Make text bold using attr()
:
use yansi::{Paint, Attribute};
painted.attr(Attribute::Bold);
Make text bold using using bold()
.
use yansi::Paint;
painted.bold();
Sourceยงfn rapid_blink(&self) -> Painted<&T>
fn rapid_blink(&self) -> Painted<&T>
Sourceยงfn quirk(&self, value: Quirk) -> Painted<&T>
fn quirk(&self, value: Quirk) -> Painted<&T>
Enables the yansi
Quirk
value
.
This method should be used rarely. Instead, prefer to use quirk-specific
builder methods like mask()
and
wrap()
, which have the same functionality but are
pithier.
ยงExample
Enable wrapping using .quirk()
:
use yansi::{Paint, Quirk};
painted.quirk(Quirk::Wrap);
Enable wrapping using wrap()
.
use yansi::Paint;
painted.wrap();
Sourceยงfn clear(&self) -> Painted<&T>
๐Deprecated since 1.0.1: renamed to resetting()
due to conflicts with Vec::clear()
.
The clear()
method will be removed in a future release.
fn clear(&self) -> Painted<&T>
resetting()
due to conflicts with Vec::clear()
.
The clear()
method will be removed in a future release.Sourceยงfn whenever(&self, value: Condition) -> Painted<&T>
fn whenever(&self, value: Condition) -> Painted<&T>
Conditionally enable styling based on whether the Condition
value
applies. Replaces any previous condition.
See the crate level docs for more details.
ยงExample
Enable styling painted
only when both stdout
and stderr
are TTYs:
use yansi::{Paint, Condition};
painted.red().on_yellow().whenever(Condition::STDOUTERR_ARE_TTY);