Enum MusicError 

#[non_exhaustive]
pub enum MusicError {
    BrokenData(String),
    UnknownKey(String),
    UnknownNote(String),
    UnknownNumeral(String),
    UnsupportedChord(String),
    UnknownScale(String),
}

A failure of the music dictionary or of one of its parsers.

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.

BrokenData(String)

The embedded data does not parse or breaks a rule.

UnknownKey(String)

A key name the grammar does not accept.

UnknownNote(String)

A note name the grammar does not accept, or a pitch outside 0 to 127.

UnknownNumeral(String)

A Roman numeral the grammar does not accept.

UnsupportedChord(String)

A chord symbol outside the dictionary.

UnknownScale(String)

A scale id outside the dictionary.

Trait Implementations

impl Clone for MusicError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MusicError

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

Formats the value using the given formatter.

impl Display for MusicError

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

Formats the value using the given formatter.

impl Eq for MusicError

impl Error for MusicError

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 MusicError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MusicError