Enum QasmError 

#[non_exhaustive]
pub enum QasmError {
    UnsupportedGate(String),
    ParseError {
        line: usize,
        message: String,
    },
    UndefinedRegister(String),
    QubitIndexOutOfRange {
        register: String,
        index: usize,
        size: usize,
    },
    InvalidParameter {
        gate: String,
        message: String,
    },
    WrongParameterCount {
        gate: String,
        expected: usize,
        actual: usize,
    },
    WrongQubitCount {
        gate: String,
        expected: usize,
        actual: usize,
    },
    FormatError(Error),
    EmptyCircuit,
    ExpressionError(String),
}

Errors that can occur during QASM 2.0 operations

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.

UnsupportedGate(String)

The gate is not supported in QASM 2.0

ParseError

The QASM input is syntactically invalid

Fields

line: usize

Line number where the error occurred (1-indexed)

message: String

Human-readable error description

UndefinedRegister(String)

A register referenced in the QASM was not declared

QubitIndexOutOfRange

A qubit index is out of range for its register

Fields

register: String

Register name

index: usize

Attempted index

size: usize

Register size

InvalidParameter

An invalid or unsupported gate parameter was encountered

Fields

gate: String

Gate name

message: String

Error description

WrongParameterCount

Wrong number of parameters for a gate

Fields

gate: String

Gate name

expected: usize

Expected count

actual: usize

Actual count

WrongQubitCount

Wrong number of qubits for a gate

Fields

gate: String

Gate name

expected: usize

Expected count

actual: usize

Actual count

FormatError(Error)

A string formatting error during export

EmptyCircuit

No qubits in circuit (cannot determine register size)

ExpressionError(String)

An expression in the QASM could not be evaluated

Implementations

impl QasmError

pub fn parse(line: usize, message: impl Into<String>) -> Self

Create a parse error with position information

Trait Implementations

impl Debug for QasmError

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

Formats the value using the given formatter.

impl Display for QasmError

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

Formats the value using the given formatter.

impl Error for QasmError

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<Error> for QasmError

fn from(source: Error) -> Self

Converts to this type from the input type.