Enum DeviceError 

pub enum DeviceError {
    UnknownGate(String),
    UnknownWire(usize),
    WrongQubitCount {
        gate: String,
        expected: usize,
        actual: usize,
    },
    WrongParamCount {
        gate: String,
        expected: usize,
        actual: usize,
    },
    UnsupportedQubitCount(usize),
    SimulationFailed(String),
    JsonError(String),
}

Errors that can occur in the PennyLane device backend.

Variants

UnknownGate(String)

A gate name is not supported by this device

UnknownWire(usize)

A wire index has no mapping to a qubit

WrongQubitCount

Wrong number of qubit arguments for a gate

Fields

gate: String

Gate name

expected: usize

Expected count

actual: usize

Actual count

WrongParamCount

Wrong number of parameter arguments for a gate

Fields

gate: String

Gate name

expected: usize

Expected count

actual: usize

Actual count

UnsupportedQubitCount(usize)

The circuit qubit count is not supported by the simulator

SimulationFailed(String)

Simulation failed with an error message

JsonError(String)

JSON serialization/deserialization error

Trait Implementations

impl Debug for DeviceError

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

Formats the value using the given formatter.

impl Display for DeviceError

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

Formats the value using the given formatter.

impl Error for DeviceError

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.