Enum RuntimeError 

pub enum RuntimeError {
    AllocationTooLarge,
    InvalidAlignment,
    AllocationFailed,
    DeallocateInvalidAddress,
    FunctionNotFound(String),
    NotAFunction(String),
    MissingMemory,
    NotMemory,
    InvalidString(FromUtf8Error),
    InvalidNumber(TryFromIntError),
    InvalidVariant {
        type_name: &'static str,
        discriminant: i64,
    },
    Custom(Error),
}

Errors that can occur when using a Wasm runtime.

Variants

AllocationTooLarge

Attempt to allocate a buffer larger than i32::MAX.

InvalidAlignment

Attempt to allocate a buffer that’s aligned to an invalid boundary.

AllocationFailed

Call to cabi_realloc returned a negative value instead of a valid address.

DeallocateInvalidAddress

Attempt to deallocate an address that’s after i32::MAX.

FunctionNotFound(String)

Attempt to load a function not exported from a module.

NotAFunction(String)

Attempt to load a function with a name that’s used for a different import in the module.

MissingMemory

Attempt to load the memory export from a module that doesn’t export it.

NotMemory

Attempt to load the memory export from a module that exports it as something else.

InvalidString(FromUtf8Error)

Attempt to load a string from a sequence of bytes that doesn’t contain a UTF-8 string.

InvalidNumber(TryFromIntError)

Attempt to create a GuestPointer from an invalid address representation.

InvalidVariant

Attempt to load an enum type but the discriminant doesn’t match any of the variants.

Fields

type_name: &'static str

The enum type that failed being loaded.

discriminant: i64

The invalid discriminant that was received.

Custom(Error)

A custom error reported by one of the Wasm host’s function handlers.

Trait Implementations

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, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for RuntimeError

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<FromUtf8Error> for RuntimeError

fn from(source: FromUtf8Error) -> Self

Converts to this type from the input type.

impl From<TryFromIntError> for RuntimeError

fn from(source: TryFromIntError) -> Self

Converts to this type from the input type.