Enum ReflectError

pub enum ReflectError {
    NoSuchVariant {
        enum_type: EnumType,
    },
    WrongShape {
        expected: &'static Shape,
        actual: &'static Shape,
    },
    WasNotA {
        expected: &'static str,
        actual: &'static Shape,
    },
    UninitializedField {
        shape: &'static Shape,
        field_name: &'static str,
    },
    UninitializedEnumField {
        shape: &'static Shape,
        field_name: &'static str,
        variant_name: &'static str,
    },
    UninitializedValue {
        shape: &'static Shape,
    },
    InvariantViolation {
        invariant: &'static str,
    },
    MissingCharacteristic {
        shape: &'static Shape,
        characteristic: Characteristic,
    },
    OperationFailed {
        shape: &'static Shape,
        operation: &'static str,
    },
    FieldError {
        shape: &'static Shape,
        field_error: FieldError,
    },
    MissingPushPointee {
        shape: &'static Shape,
    },
    Unknown,
    TryFromError {
        src_shape: &'static Shape,
        dst_shape: &'static Shape,
        inner: TryFromError,
    },
    DefaultAttrButNoDefaultImpl {
        shape: &'static Shape,
    },
    Unsized {
        shape: &'static Shape,
        operation: &'static str,
    },
    ArrayNotFullyInitialized {
        shape: &'static Shape,
        pushed_count: usize,
        expected_size: usize,
    },
    ArrayIndexOutOfBounds {
        shape: &'static Shape,
        index: usize,
        size: usize,
    },
    InvalidOperation {
        operation: &'static str,
        reason: &'static str,
    },
    NoActiveFrame,
}

Errors that can occur when reflecting on types.

Variants

NoSuchVariant

Tried to set an enum to a variant that does not exist

Fields

enum_type: EnumType

The enum definition containing all known variants.

WrongShape

Tried to get the wrong shape out of a value — e.g. we were manipulating a String, but .get() was called with a u64 or something.

Fields

expected: &'static Shape

The expected shape of the value.

actual: &'static Shape

The actual shape of the value.

WasNotA

Attempted to perform an operation that expected a struct or something

Fields

expected: &'static str

The name of the expected type.

actual: &'static Shape

The type we got instead

UninitializedField

A field was not initialized during build

Fields

shape: &'static Shape

The shape containing the field

field_name: &'static str

The name of the field that wasn’t initialized

UninitializedEnumField

A field in an enum variant was not initialized during build

Fields

shape: &'static Shape

The enum shape

field_name: &'static str

The name of the field that wasn’t initialized

variant_name: &'static str

The name of the variant containing the field

UninitializedValue

A scalar value was not initialized during build

Fields

shape: &'static Shape

The scalar shape

InvariantViolation

An invariant of the reflection system was violated.

Fields

invariant: &'static str

The invariant that was violated.

MissingCharacteristic

Attempted to set a value to its default, but the value doesn’t implement Default.

Fields

shape: &'static Shape

The shape of the value that doesn’t implement Default.

characteristic: Characteristic

The characteristic that is missing.

OperationFailed

An operation failed for a given shape

Fields

shape: &'static Shape

The shape of the value for which the operation failed.

operation: &'static str

The name of the operation that failed.

FieldError

An error occurred when attempting to access or modify a field.

Fields

shape: &'static Shape

The shape of the value containing the field.

field_error: FieldError

The specific error that occurred with the field.

MissingPushPointee

Indicates that we try to access a field on an Arc<T>, for example, and the field might exist on the T, but you need to do begin_smart_ptr first when using the WIP API.

Fields

shape: &'static Shape

The smart pointer (Arc<T>, Box<T> etc.) shape on which field was caleld

Unknown

An unknown error occurred.

TryFromError

An error occured while putting

Fields

src_shape: &'static Shape

The shape of the value being converted from.

dst_shape: &'static Shape

The shape of the value being converted to.

inner: TryFromError

The inner error

DefaultAttrButNoDefaultImpl

A shape has a default attribute, but no implementation of the Default trait.

Fields

shape: &'static Shape

The shape of the value that has a default attribute but no default implementation.

Unsized

The type is unsized

Fields

shape: &'static Shape

The shape for the type that is unsized

operation: &'static str

The operation we were trying to perform

ArrayNotFullyInitialized

Array not fully initialized during build

Fields

shape: &'static Shape

The shape of the array

pushed_count: usize

The number of elements pushed

expected_size: usize

The expected array size

ArrayIndexOutOfBounds

Array index out of bounds

Fields

shape: &'static Shape

The shape of the array

index: usize

The index that was out of bounds

size: usize

The array size

InvalidOperation

Invalid operation for the current state

Fields

operation: &'static str

The operation that was attempted

reason: &'static str

The reason why it failed

NoActiveFrame

No active frame in Partial

Trait Implementations

impl Clone for ReflectError

fn clone(&self) -> ReflectError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReflectError

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

Formats the value using the given formatter.

impl Display for ReflectError

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

Formats the value using the given formatter.

impl Error for ReflectError

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.