Enum Error 

#[non_exhaustive]
pub enum Error {
    Transport(TransportError),
    Backend(Box<dyn Error + Sync + Send>),
    ScpiCommand {
        command: String,
        message: String,
    },
    Timeout,
    Unsupported(&'static str),
    DeviceNotFound {
        address: String,
    },
    UnsupportedKind {
        address: String,
        kind: InstrumentKind,
        supported: Vec<InstrumentKind>,
    },
    Parse(String),
    SessionLimit {
        address: String,
    },
    InvalidAddress(String),
    MockExhausted,
    MockMismatch {
        expected: String,
        actual: String,
    },
    Comm {
        address: String,
        command: Option<String>,
        attempts: u32,
        source: Box<dyn Error + Sync + Send>,
    },
}

Core error type — VISA-free; backend errors are boxed.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Transport(TransportError)

Backend(Box<dyn Error + Sync + Send>)

ScpiCommand

Fields

command: String

message: String

Timeout

Unsupported(&'static str)

DeviceNotFound

Fields

address: String

UnsupportedKind

Fields

address: String

kind: InstrumentKind

supported: Vec<InstrumentKind>

Parse(String)

SessionLimit

Fields

address: String

InvalidAddress(String)

MockExhausted

MockMismatch

Fields

expected: String

actual: String

Comm

Fields

address: String

command: Option<String>

attempts: u32

source: Box<dyn Error + Sync + Send>

Implementations

impl Error

pub fn backend(err: impl Error + Send + Sync + 'static) -> Error

Wraps a backend-specific error (e.g. visa_rs::Error) into the core error type.

pub fn with_comm_context( self, address: impl Into<String>, command: Option<&str>, attempts: u32, ) -> Error

Attaches device address and command context to a communication error.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<TransportError> for Error

fn from(source: TransportError) -> Error

Converts to this type from the input type.