Enum IntrospectionError

pub enum IntrospectionError {
    BadDepth,
    UnknownKey,
    NoChildren,
    IndexOutOfRange,
    AlreadyAtTop,
}

Ways in which introspection may fail

Variants

BadDepth

The given depth value is invalid. At start of introspection, max depth value is 0, and fields of the root object are introspected. If a field is selected, a new level is expanded and max depth value is 1.

UnknownKey

The given key was not found

NoChildren

An attempt was made to select/expand a node which has no children.

IndexOutOfRange

An attempt was made to select/expand a child with an index greater or equal to the number of children.

AlreadyAtTop

An attempt was made to back up when already at the top.

Trait Implementations

impl Clone for IntrospectionError

fn clone(&self) -> IntrospectionError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for IntrospectionError

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

Formats the value using the given formatter.

impl PartialEq for IntrospectionError

fn eq(&self, other: &IntrospectionError) -> 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 Copy for IntrospectionError

impl Eq for IntrospectionError

impl StructuralPartialEq for IntrospectionError