Enum DialogStackError

pub enum DialogStackError {
    InvalidDuringEventHandling,
    StackIsEmpty,
    TypeMismatch,
}

Errors for some operations.

Variants

InvalidDuringEventHandling

During event-handling the top dialog is taken from the stack to avoid problems if this ever recurses. Some operations are not available during this time.

StackIsEmpty

No dialogs on the stack.

TypeMismatch

Downcasting error.

Trait Implementations

impl Clone for DialogStackError

fn clone(&self) -> DialogStackError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DialogStackError

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

Formats the value using the given formatter.

impl Display for DialogStackError

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

Formats the value using the given formatter.

impl Error for DialogStackError

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 PartialEq for DialogStackError

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

impl Eq for DialogStackError

impl StructuralPartialEq for DialogStackError