Enum EvaluationError 

#[non_exhaustive]
pub enum EvaluationError {
    UndefinedVariable {
        name: String,
    },
    TypeMismatch {
        expected: String,
        found: String,
    },
    DivisionByZero,
    FunctionNotFound {
        name: String,
    },
    WrongArity {
        name: String,
        expected: usize,
        got: usize,
    },
    JitCompilationError {
        message: String,
    },
    UnsupportedOperation {
        message: String,
    },
}

Errors that can occur during expression evaluation.

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.

UndefinedVariable

A variable referenced in the expression was not provided.

Fields

name: String

Name of the undefined variable.

TypeMismatch

A type mismatch occurred (e.g. integer where float was expected).

Fields

expected: String

Expected type description.

found: String

Actual type description.

DivisionByZero

Division by zero.

FunctionNotFound

A user-defined function was not found in the registry.

Fields

name: String

Name of the missing function.

WrongArity

A function was called with the wrong number of arguments.

Fields

name: String

Name of the function.

expected: usize

Expected number of arguments.

got: usize

Actual number of arguments.

JitCompilationError

JIT compilation failed.

Fields

message: String

Description of the compilation failure.

UnsupportedOperation

The requested operation is not supported for this domain.

Fields

message: String

Description of the unsupported operation.

Trait Implementations

impl Clone for EvaluationError

fn clone(&self) -> EvaluationError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EvaluationError

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

Formats the value using the given formatter.

impl Display for EvaluationError

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

Formats the value using the given formatter.

impl Error for EvaluationError

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 PartialEq for EvaluationError

fn eq(&self, other: &EvaluationError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for EvaluationError