Enum EvaluationErrorKind 

pub enum EvaluationErrorKind {
    UndefinedFunction {
        name: String,
    },
    ArgumentCount {
        expected: Option<u32>,
        actual: Option<u32>,
    },
    TypeError {
        detail: String,
    },
    Other,
}

Classifies the specific failure mode of an evaluation error.

This allows consumers to programmatically handle different error types without parsing error message strings.

Variants

UndefinedFunction

Expression called a function that is not defined.

Common when using extension functions in strict mode, or typos in function names.

Fields

name: String

The function name that was not found.

ArgumentCount

Wrong number of arguments passed to a function.

Fields

expected: Option<u32>

Expected number of arguments (if parseable).

actual: Option<u32>

Actual number of arguments (if parseable).

TypeError

Argument type does not match what the function expects.

Fields

detail: String

Description of the type mismatch.

Other

Any other evaluation failure.

Trait Implementations

impl Clone for EvaluationErrorKind

fn clone(&self) -> EvaluationErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EvaluationErrorKind

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

Formats the value using the given formatter.

impl Display for EvaluationErrorKind

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

Formats the value using the given formatter.

impl PartialEq for EvaluationErrorKind

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for EvaluationErrorKind

impl StructuralPartialEq for EvaluationErrorKind