Enum TryHandler

Source

pub enum TryHandler {
    Catch(ErrorHandler),
    Finally(ErrorHandler),
    RunningFinally,
}

Expand description

An entry on the handler stack maintained while evaluating a try expression.

Entries are pushed in the order they are set up, so the innermost handler is always on top. When control flow unwinds out of a try body (an error, return, exit, break, or continue), the evaluator pops entries from the top until one takes over.

Variants§

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Catch(ErrorHandler)

A catch block. Only errors are directed here; other unwinding just discards the entry.

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Finally(ErrorHandler)

A finally block that has not run yet. Every kind of unwinding is directed here first, and resumes once the block finishes.

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RunningFinally

A finally block that is currently running. It replaces the TryHandler::Finally entry for the duration of the block so that unwinding out of the block itself (for example a return inside finally) knows to abandon whatever the block was going to resume.

TryHandler

Enum TryHandler Copy item path

Variants§

Catch(ErrorHandler)

Finally(ErrorHandler)

RunningFinally

Trait Implementations§

impl Clone for TryHandler

fn clone(&self) -> Self

fn clone_from(&mut self, source: &Self)

impl Copy for TryHandler

impl Debug for TryHandler

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations§

impl Freeze for TryHandler

impl RefUnwindSafe for TryHandler

impl Send for TryHandler

impl Sync for TryHandler

impl Unpin for TryHandler

impl UnsafeUnpin for TryHandler

impl UnwindSafe for TryHandler

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> CloneToUninit for Twhere T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘwhere F: FnOnce(&Self) -> bool,

impl<T> IntoSpanned for T

fn into_spanned(self, span: Span) -> Spanned<T>

impl<D> OwoColorize for D

fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>where C: Color,

fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>where C: Color,

fn black(&self) -> FgColorDisplay<'_, Black, Self>

fn on_black(&self) -> BgColorDisplay<'_, Black, Self>

fn red(&self) -> FgColorDisplay<'_, Red, Self>

fn on_red(&self) -> BgColorDisplay<'_, Red, Self>

fn green(&self) -> FgColorDisplay<'_, Green, Self>

fn on_green(&self) -> BgColorDisplay<'_, Green, Self>

fn yellow(&self) -> FgColorDisplay<'_, Yellow, Self>

fn on_yellow(&self) -> BgColorDisplay<'_, Yellow, Self>

fn blue(&self) -> FgColorDisplay<'_, Blue, Self>

fn on_blue(&self) -> BgColorDisplay<'_, Blue, Self>

fn magenta(&self) -> FgColorDisplay<'_, Magenta, Self>

fn on_magenta(&self) -> BgColorDisplay<'_, Magenta, Self>

fn purple(&self) -> FgColorDisplay<'_, Magenta, Self>

fn on_purple(&self) -> BgColorDisplay<'_, Magenta, Self>

fn cyan(&self) -> FgColorDisplay<'_, Cyan, Self>

fn on_cyan(&self) -> BgColorDisplay<'_, Cyan, Self>

fn white(&self) -> FgColorDisplay<'_, White, Self>

fn on_white(&self) -> BgColorDisplay<'_, White, Self>

fn default_color(&self) -> FgColorDisplay<'_, Default, Self>

fn on_default_color(&self) -> BgColorDisplay<'_, Default, Self>

fn bright_black(&self) -> FgColorDisplay<'_, BrightBlack, Self>

fn on_bright_black(&self) -> BgColorDisplay<'_, BrightBlack, Self>

fn bright_red(&self) -> FgColorDisplay<'_, BrightRed, Self>

fn on_bright_red(&self) -> BgColorDisplay<'_, BrightRed, Self>

fn bright_green(&self) -> FgColorDisplay<'_, BrightGreen, Self>

fn on_bright_green(&self) -> BgColorDisplay<'_, BrightGreen, Self>

fn bright_yellow(&self) -> FgColorDisplay<'_, BrightYellow, Self>

fn on_bright_yellow(&self) -> BgColorDisplay<'_, BrightYellow, Self>

fn bright_blue(&self) -> FgColorDisplay<'_, BrightBlue, Self>

fn on_bright_blue(&self) -> BgColorDisplay<'_, BrightBlue, Self>

fn bright_magenta(&self) -> FgColorDisplay<'_, BrightMagenta, Self>

fn on_bright_magenta(&self) -> BgColorDisplay<'_, BrightMagenta, Self>

fn bright_purple(&self) -> FgColorDisplay<'_, BrightMagenta, Self>

fn on_bright_purple(&self) -> BgColorDisplay<'_, BrightMagenta, Self>

fn bright_cyan(&self) -> FgColorDisplay<'_, BrightCyan, Self>

fn on_bright_cyan(&self) -> BgColorDisplay<'_, BrightCyan, Self>

fn bright_white(&self) -> FgColorDisplay<'_, BrightWhite, Self>

fn on_bright_white(&self) -> BgColorDisplay<'_, BrightWhite, Self>

Enum TryHandler

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

impl<T, U> Into<U> for T
where U: From<T>,

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>
where C: Color,

fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>
where C: Color,

fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

fn on_color<Color>(&self, color: Color) -> BgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

impl<T> ToOwned for T
where T: Clone,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,