#[non_exhaustive]pub enum UndefinedBehavior {
Lenient,
Chainable,
Strict,
}
Expand description
Defines the behavior of undefined values in the engine.
At present there are three types of behaviors available which mirror the behaviors that Jinja2 provides out of the box.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Lenient
The default, somewhat lenient undefined behavior.
- printing: allowed (returns empty string)
- iteration: allowed (returns empty array)
- attribute access of undefined values: fails
Chainable
Like Lenient
, but also allows chaining of undefined lookups.
- printing: allowed (returns empty string)
- iteration: allowed (returns empty array)
- attribute access of undefined values: allowed (returns
undefined
)
Strict
Complains very quickly about undefined values.
- printing: fails
- iteration: fails
- attribute access of undefined values: fails
Trait Implementations§
source§impl Clone for UndefinedBehavior
impl Clone for UndefinedBehavior
source§fn clone(&self) -> UndefinedBehavior
fn clone(&self) -> UndefinedBehavior
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for UndefinedBehavior
impl Debug for UndefinedBehavior
source§impl Default for UndefinedBehavior
impl Default for UndefinedBehavior
source§fn default() -> UndefinedBehavior
fn default() -> UndefinedBehavior
source§impl PartialEq for UndefinedBehavior
impl PartialEq for UndefinedBehavior
impl Copy for UndefinedBehavior
impl Eq for UndefinedBehavior
impl StructuralPartialEq for UndefinedBehavior
Auto Trait Implementations§
impl Freeze for UndefinedBehavior
impl RefUnwindSafe for UndefinedBehavior
impl Send for UndefinedBehavior
impl Sync for UndefinedBehavior
impl Unpin for UndefinedBehavior
impl UnwindSafe for UndefinedBehavior
Blanket Implementations§
source§impl<T> AsAny for Twhere
T: Any,
impl<T> AsAny for Twhere
T: Any,
fn as_any_ref(&self) -> &(dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
source§impl<'a, T, E> AsTaggedExplicit<'a, E> for Twhere
T: 'a,
impl<'a, T, E> AsTaggedExplicit<'a, E> for Twhere
T: 'a,
source§impl<'a, T, E> AsTaggedImplicit<'a, E> for Twhere
T: 'a,
impl<'a, T, E> AsTaggedImplicit<'a, E> for Twhere
T: 'a,
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)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 moresource§impl<T> Paint for Twhere
T: ?Sized,
impl<T> Paint for Twhere
T: ?Sized,
source§fn 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.
§Example
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();
source§fn bright_black(&self) -> Painted<&T>
fn bright_black(&self) -> Painted<&T>
Returns self
with the
fg()
set to
Color::BrightBlack
.
§Example
println!("{}", value.bright_black());
source§fn bright_red(&self) -> Painted<&T>
fn bright_red(&self) -> Painted<&T>
source§fn bright_green(&self) -> Painted<&T>
fn bright_green(&self) -> Painted<&T>
Returns self
with the
fg()
set to
Color::BrightGreen
.
§Example
println!("{}", value.bright_green());
source§fn bright_yellow(&self) -> Painted<&T>
fn bright_yellow(&self) -> Painted<&T>
Returns self
with the
fg()
set to
Color::BrightYellow
.
§Example
println!("{}", value.bright_yellow());
source§fn bright_blue(&self) -> Painted<&T>
fn bright_blue(&self) -> Painted<&T>
source§fn bright_magenta(&self) -> Painted<&T>
fn bright_magenta(&self) -> Painted<&T>
Returns self
with the
fg()
set to
Color::BrightMagenta
.
§Example
println!("{}", value.bright_magenta());
source§fn bright_cyan(&self) -> Painted<&T>
fn bright_cyan(&self) -> Painted<&T>
source§fn bright_white(&self) -> Painted<&T>
fn bright_white(&self) -> Painted<&T>
Returns self
with the
fg()
set to
Color::BrightWhite
.
§Example
println!("{}", value.bright_white());
source§fn 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.
§Example
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();
source§fn on_primary(&self) -> Painted<&T>
fn on_primary(&self) -> Painted<&T>
source§fn on_magenta(&self) -> Painted<&T>
fn on_magenta(&self) -> Painted<&T>
source§fn on_bright_black(&self) -> Painted<&T>
fn on_bright_black(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightBlack
.
§Example
println!("{}", value.on_bright_black());
source§fn on_bright_red(&self) -> Painted<&T>
fn on_bright_red(&self) -> Painted<&T>
source§fn on_bright_green(&self) -> Painted<&T>
fn on_bright_green(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightGreen
.
§Example
println!("{}", value.on_bright_green());
source§fn on_bright_yellow(&self) -> Painted<&T>
fn on_bright_yellow(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightYellow
.
§Example
println!("{}", value.on_bright_yellow());
source§fn on_bright_blue(&self) -> Painted<&T>
fn on_bright_blue(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightBlue
.
§Example
println!("{}", value.on_bright_blue());
source§fn on_bright_magenta(&self) -> Painted<&T>
fn on_bright_magenta(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightMagenta
.
§Example
println!("{}", value.on_bright_magenta());
source§fn on_bright_cyan(&self) -> Painted<&T>
fn on_bright_cyan(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightCyan
.
§Example
println!("{}", value.on_bright_cyan());
source§fn on_bright_white(&self) -> Painted<&T>
fn on_bright_white(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightWhite
.
§Example
println!("{}", value.on_bright_white());
source§fn 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.
§Example
Make text bold using attr()
:
use yansi::{Paint, Attribute};
painted.attr(Attribute::Bold);
Make text bold using using bold()
.
use yansi::Paint;
painted.bold();
source§fn underline(&self) -> Painted<&T>
fn underline(&self) -> Painted<&T>
Returns self
with the
attr()
set to
Attribute::Underline
.
§Example
println!("{}", value.underline());
source§fn rapid_blink(&self) -> Painted<&T>
fn rapid_blink(&self) -> Painted<&T>
Returns self
with the
attr()
set to
Attribute::RapidBlink
.
§Example
println!("{}", value.rapid_blink());
source§fn 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.
§Example
Enable wrapping using .quirk()
:
use yansi::{Paint, Quirk};
painted.quirk(Quirk::Wrap);
Enable wrapping using wrap()
.
use yansi::Paint;
painted.wrap();
source§fn clear(&self) -> Painted<&T>
👎Deprecated 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.source§fn 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.
§Example
Enable styling painted
only when both stdout
and stderr
are TTYs:
use yansi::{Paint, Condition};
painted.red().on_yellow().whenever(Condition::STDOUTERR_ARE_TTY);