Enum ParseHeaderError 

#[non_exhaustive]
pub enum ParseHeaderError {
    ChannelState(ParseChannelStateError),
    CallState(ParseCallStateError),
    AnswerState(ParseAnswerStateError),
    CallDirection(ParseCallDirectionError),
    HangupCause(ParseHangupCauseError),
    GatewayRegState(ParseGatewayRegStateError),
    LoopbackLeg(ParseLoopbackLegError),
    Priority(ParsePriorityError),
    Timetable(ParseTimetableError),
    SipStatusCode(ParseIntError),
}

The union a caller reaches when ?-ing several typed HeaderLookup accessors into one error type.

Each accessor returns its own parser’s error; a function calling more than one of them has nothing to name in its return type without this. Display and source both defer to the inner error, so nothing is lost by going through it.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ChannelState(ParseChannelStateError)

From channel_state and its siblings.

CallState(ParseCallStateError)

From call_state.

AnswerState(ParseAnswerStateError)

From answer_state.

CallDirection(ParseCallDirectionError)

From call_direction.

HangupCause(ParseHangupCauseError)

From hangup_cause.

GatewayRegState(ParseGatewayRegStateError)

From gateway_reg_state.

LoopbackLeg(ParseLoopbackLegError)

From loopback_leg.

Priority(ParsePriorityError)

From priority.

Timetable(ParseTimetableError)

From caller_timetable and other_leg_timetable.

SipStatusCode(ParseIntError)

From sip_status_code, whose header parses as a plain integer.

Constructed by name, never through ?: ParseIntError belongs to no header, and a From for it would relabel every unrelated integer parse in the caller as this one.

Trait Implementations

impl Clone for ParseHeaderError

fn clone(&self) -> ParseHeaderError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseHeaderError

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

Formats the value using the given formatter.

impl Display for ParseHeaderError

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

Formats the value using the given formatter.

impl Eq for ParseHeaderError

impl Error for ParseHeaderError

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<ParseAnswerStateError> for ParseHeaderError

fn from(e: ParseAnswerStateError) -> Self

Converts to this type from the input type.

impl From<ParseCallDirectionError> for ParseHeaderError

fn from(e: ParseCallDirectionError) -> Self

Converts to this type from the input type.

impl From<ParseCallStateError> for ParseHeaderError

fn from(e: ParseCallStateError) -> Self

Converts to this type from the input type.

impl From<ParseChannelStateError> for ParseHeaderError

fn from(e: ParseChannelStateError) -> Self

Converts to this type from the input type.

impl From<ParseGatewayRegStateError> for ParseHeaderError

fn from(e: ParseGatewayRegStateError) -> Self

Converts to this type from the input type.

impl From<ParseHangupCauseError> for ParseHeaderError

fn from(e: ParseHangupCauseError) -> Self

Converts to this type from the input type.

impl From<ParseLoopbackLegError> for ParseHeaderError

fn from(e: ParseLoopbackLegError) -> Self

Converts to this type from the input type.

impl From<ParsePriorityError> for ParseHeaderError

Available on crate feature esl only.

fn from(e: ParsePriorityError) -> Self

Converts to this type from the input type.

impl From<ParseTimetableError> for ParseHeaderError

fn from(e: ParseTimetableError) -> Self

Converts to this type from the input type.

impl PartialEq for ParseHeaderError

fn eq(&self, other: &ParseHeaderError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ParseHeaderError