Enum EvaluationError

pub enum EvaluationError {
    VariableNotFound(Box<ErrorContext>),
    TypeMismatch(Box<ErrorContext>),
    UnsupportedOperator(Box<ErrorContext>),
    ParseError(Box<ErrorContext>),
    IndexOutOfBounds(Box<ErrorContext>),
    FieldNotFound(Box<ErrorContext>),
}

Variants

VariableNotFound(Box<ErrorContext>)

A variable specified in the expression cannot be found.

TypeMismatch(Box<ErrorContext>)

Mismatch between expected and actual types during evaluation.

UnsupportedOperator(Box<ErrorContext>)

An operator is used with incompatible types.

ParseError(Box<ErrorContext>)

A value fails to parse into an expected type.

IndexOutOfBounds(Box<ErrorContext>)

An index is out of bounds during array access in a path.

FieldNotFound(Box<ErrorContext>)

A field/key is not found during object access in a path.

Implementations

impl EvaluationError

pub fn variable_not_found( variable_name: impl Into<String>, source: Option<Box<dyn Error + Send + Sync + 'static>>, metadata: Option<HashMap<String, String>>, ) -> Self

Creates a new VariableNotFound error. The message for the ErrorContext should be the name of the variable.

pub fn type_mismatch( message: impl Into<String>, source: Option<Box<dyn Error + Send + Sync + 'static>>, metadata: Option<HashMap<String, String>>, ) -> Self

Creates a new TypeMismatch error. The message for ErrorContext should describe the type mismatch.

pub fn unsupported_operator( message: impl Into<String>, source: Option<Box<dyn Error + Send + Sync + 'static>>, metadata: Option<HashMap<String, String>>, ) -> Self

Creates a new UnsupportedOperator error. The message for ErrorContext should describe why the operator is unsupported, e.g., “‘=’ for types String and Number”.

pub fn parse_error( message: impl Into<String>, source: Option<Box<dyn Error + Send + Sync + 'static>>, metadata: Option<HashMap<String, String>>, ) -> Self

Creates a new ParseError error. The message for ErrorContext should describe the parsing failure.

pub fn index_out_of_bounds( message: impl Into<String>, source: Option<Box<dyn Error + Send + Sync + 'static>>, metadata: Option<HashMap<String, String>>, ) -> Self

Creates a new IndexOutOfBounds error. The message for ErrorContext should describe the out-of-bounds access.

pub fn field_not_found( message: impl Into<String>, source: Option<Box<dyn Error + Send + Sync + 'static>>, metadata: Option<HashMap<String, String>>, ) -> Self

Creates a new FieldNotFound error. The message for ErrorContext should describe the missing field.

Trait Implementations

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 TraceableError for EvaluationError

fn trace_id(&self) -> String

Returns the trace ID for this error