Enum wasmi::Trap

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pub enum Trap {
    Code(TrapCode),
    Host(Box<dyn HostError + 'static, Global>),
}

Expand description

Error type which can be thrown by wasm code or by host environment.

Under some conditions, wasm execution may produce a Trap, which immediately aborts execution. Traps can’t be handled by WebAssembly code, but are reported to the embedder.

Variants

`Code(TrapCode)`

Traps during Wasm execution.

`Host(Box<dyn HostError + 'static, Global>)`

Traps and errors during host execution.

Implementations

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impl Trap

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pub fn host(host_error: U) -> Trap where
U: HostError,

Wraps the host error in a Trap.

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pub fn is_host(&self) -> bool

Returns true if self trap originating from host code.

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pub fn code(&self) -> Option<TrapCode>

Returns the TrapCode traps originating from Wasm execution.

Trait Implementations

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impl Debug for Trap

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

Formats the value using the given formatter. Read more

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impl Display for Trap

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

Formats the value using the given formatter. Read more

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impl Error for Trap

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fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any. Read more

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fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred. Read more

1.0.0 · source

fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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fn provide(&'a self, req: &mut Demand<'a>)

🔬 This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports. Read more

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impl From<Trap> for Error

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fn from(e: Trap) -> Error

Converts to this type from the input type.

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impl From<Trap> for ResumableError

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fn from(trap: Trap) -> Self

Converts to this type from the input type.

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impl From<TrapCode> for Trap

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fn from(error: TrapCode) -> Trap

Converts to this type from the input type.

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impl From for Trap where
U: HostError,

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fn from(e: U) -> Trap

Converts to this type from the input type.

Auto Trait Implementations

impl !RefUnwindSafe for Trap

impl Send for Trap

impl Sync for Trap

impl Unpin for Trap

impl !UnwindSafe for Trap

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> Downcast for T where
T: Any,

fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

impl<T> DowncastSync for T where
T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToString for T where
T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Enum wasmi::Trap

Variants

Code(TrapCode)

Host(Box<dyn HostError + 'static, Global>)

Implementations

impl Trap

pub fn host<U>(host_error: U) -> Trap where U: HostError,

pub fn is_host(&self) -> bool

pub fn code(&self) -> Option<TrapCode>

Trait Implementations

impl Debug for Trap

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

impl Display for Trap

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

impl Error for Trap

fn description(&self) -> &str

fn source(&self) -> Option<&(dyn Error + 'static)>

fn backtrace(&self) -> Option<&Backtrace>

fn cause(&self) -> Option<&dyn Error>

fn provide(&'a self, req: &mut Demand<'a>)

impl From<Trap> for Error

fn from(e: Trap) -> Error

impl From<Trap> for ResumableError

fn from(trap: Trap) -> Self

impl From<TrapCode> for Trap

fn from(error: TrapCode) -> Trap

impl<U> From<U> for Trap where U: HostError,

fn from(e: U) -> Trap

Auto Trait Implementations

impl !RefUnwindSafe for Trap

impl Send for Trap

impl Sync for Trap

impl Unpin for Trap

impl !UnwindSafe for Trap

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> Downcast for T where T: Any,

fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

fn as_any(&self) -> &(dyn Any + 'static)

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

impl<T> DowncastSync for T where T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> ToString for T where T: Display + ?Sized,

default fn to_string(&self) -> String

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

`Code(TrapCode)`

`Host(Box<dyn HostError + 'static, Global>)`

pub fn host<U>(host_error: U) -> Trap where
U: HostError,

impl<U> From<U> for Trap where
U: HostError,

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> Downcast for T where
T: Any,

impl<T> DowncastSync for T where
T: Any + Send + Sync,

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

impl<T> ToString for T where
T: Display + ?Sized,

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

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