Struct wasmer_engine::RuntimeError

pub struct RuntimeError { /* fields omitted */ }

A struct representing an aborted instruction execution, with a message indicating the cause.

Implementations

impl RuntimeError

pub fn new<I: Into<String>>(message: I) -> Self

Creates a new generic RuntimeError with the given message.

Example

let trap = wasmer_engine::RuntimeError::new("unexpected error");
assert_eq!("unexpected error", trap.message());

pub fn from_trap(trap: Trap) -> Self

Create a new RuntimeError from a Trap.

pub fn raise(error: Box<dyn Error + Send + Sync>) -> !

Raises a custom user Error

pub fn message(&self) -> String

Returns a reference the message stored in Trap.

pub fn trace(&self) -> &[FrameInfo]

Returns a list of function frames in WebAssembly code that led to this trap happening.

pub fn downcast<T: Error + 'static>(self) -> Result<T, Self>

Attempts to downcast the RuntimeError to a concrete type.

pub fn to_trap(self) -> Option<TrapCode>

Returns trap code, if it’s a Trap

pub fn is<T: Error + 'static>(&self) -> bool

Returns true if the RuntimeError is the same as T

Trait Implementations

impl Clone for RuntimeError

fn clone(&self) -> RuntimeError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RuntimeError

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

Formats the value using the given formatter.

impl Display for RuntimeError

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

Formats the value using the given formatter.

impl Error for RuntimeError

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

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

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

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

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

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<Trap> for RuntimeError

fn from(trap: Trap) -> Self

Performs the conversion.