Enum EvaluationError 

pub enum EvaluationError {
    EntityDoesNotExist(EntityDoesNotExistError),
    EntityAttrDoesNotExist(EntityAttrDoesNotExistError),
    RecordAttrDoesNotExist(RecordAttrDoesNotExistError),
    FailedExtensionFunctionLookup(ExtensionFunctionLookupError),
    TypeError(TypeError),
    WrongNumArguments(WrongNumArgumentsError),
    IntegerOverflow(IntegerOverflowError),
    UnlinkedSlot(UnlinkedSlotError),
    FailedExtensionFunctionExecution(ExtensionFunctionExecutionError),
    NonValue(NonValueError),
    RecursionLimit(RecursionLimitError),
}

Enumeration of the possible errors that can occur during evaluation

Variants

EntityDoesNotExist(EntityDoesNotExistError)

Tried to lookup an entity UID, but it didn’t exist in the provided entities

EntityAttrDoesNotExist(EntityAttrDoesNotExistError)

Tried to get an attribute or tag, but the specified entity didn’t have that attribute or tag

RecordAttrDoesNotExist(RecordAttrDoesNotExistError)

Tried to get an attribute of a (non-entity) record, but that record didn’t have that attribute

FailedExtensionFunctionLookup(ExtensionFunctionLookupError)

An error occurred when looking up an extension function

TypeError(TypeError)

Tried to evaluate an operation on values with incorrect types for that operation

WrongNumArguments(WrongNumArgumentsError)

Wrong number of arguments provided to an extension function

IntegerOverflow(IntegerOverflowError)

Overflow during an integer operation

UnlinkedSlot(UnlinkedSlotError)

Not all template slots were linked

FailedExtensionFunctionExecution(ExtensionFunctionExecutionError)

Evaluation error thrown by an extension function

NonValue(NonValueError)

This error is raised if an expression contains unknowns and cannot be reduced to a Value. In order to return partial results, use the partial evaluation APIs instead.

RecursionLimit(RecursionLimitError)

Maximum recursion limit reached for expression evaluation

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 Diagnostic for EvaluationError

fn code(&self) -> Option<Box<dyn Display + '_>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn help(&self) -> Option<Box<dyn Display + '_>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn related(&self) -> Option<Box<dyn Iterator<Item = &dyn Diagnostic> + '_>>

Additional related Diagnostics.

fn url(&self) -> Option<Box<dyn Display + '_>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

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 From<EntityAttrDoesNotExistError> for EvaluationError

fn from(source: EntityAttrDoesNotExistError) -> Self

Converts to this type from the input type.

impl From<EntityDoesNotExistError> for EvaluationError

fn from(source: EntityDoesNotExistError) -> Self

Converts to this type from the input type.

impl From<EvaluationError> for ConcretizationError

fn from(source: EvaluationError) -> Self

Converts to this type from the input type.

impl From<EvaluationError> for ContextCreationError

fn from(source: EvaluationError) -> Self

Converts to this type from the input type.

impl From<ExtensionFunctionExecutionError> for EvaluationError

fn from(source: ExtensionFunctionExecutionError) -> Self

Converts to this type from the input type.

impl From<ExtensionFunctionLookupError> for EvaluationError

fn from(source: ExtensionFunctionLookupError) -> Self

Converts to this type from the input type.

impl From<IntegerOverflowError> for EvaluationError

fn from(source: IntegerOverflowError) -> Self

Converts to this type from the input type.

impl From<NonValueError> for EvaluationError

fn from(source: NonValueError) -> Self

Converts to this type from the input type.

impl From<RecordAttrDoesNotExistError> for EvaluationError

fn from(source: RecordAttrDoesNotExistError) -> Self

Converts to this type from the input type.

impl From<RecursionLimitError> for EvaluationError

fn from(source: RecursionLimitError) -> Self

Converts to this type from the input type.

impl From<TypeError> for EvaluationError

fn from(source: TypeError) -> Self

Converts to this type from the input type.

impl From<UnlinkedSlotError> for EvaluationError

fn from(source: UnlinkedSlotError) -> Self

Converts to this type from the input type.

impl From<WrongNumArgumentsError> for EvaluationError

fn from(source: WrongNumArgumentsError) -> Self

Converts to this type from the input type.

impl PartialEq for EvaluationError

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

impl StructuralPartialEq for EvaluationError