Enum VMError

pub enum VMError {
    Return {
        flags: ReturnFlags,
        data: Option<Bytes>,
    },
    Export(ExportError),
    OutOfGas,
    Trap(TrapCode),
    Internal(InternalHostError),
    Execute(ExecuteError),
}

The outcome of a call. We can fold all errors into this type and return it from the host functions and remove Outcome type.

Variants

Return

Fields

flags: ReturnFlags

data: Option<Bytes>

Export(ExportError)

OutOfGas

Trap(TrapCode)

Error while executing Wasm: traps, memory access errors, etc.

NOTE: for supporting multiple different backends we may want to abstract this a bit and extract memory access errors, trap codes, and unify error reporting.

Internal(InternalHostError)

Execute(ExecuteError)

Implementations

impl VMError

pub fn into_output_data(self) -> Option<Bytes>

Returns the output data if the error is a Return error.

Trait Implementations

impl Debug for VMError

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

Formats the value using the given formatter.

impl Display for VMError

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

Formats the value using the given formatter.

impl Error for VMError

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

Returns the lower-level source of this error, if any.

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

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl From<ExecuteError> for VMError

fn from(source: ExecuteError) -> Self

Converts to this type from the input type.

impl From<InternalHostError> for VMError

fn from(source: InternalHostError) -> Self

Converts to this type from the input type.