Enum MusicError 

pub enum MusicError {
    NegativeDuration,
    NegativeOnset,
    InvalidTempo,
    InvalidTimeSignature,
    NonMonophonicMelody,
    InvalidTimeRange,
    InvalidPpq,
    InvalidLaneTarget {
        lane: String,
        target: String,
    },
    InvalidPianoRollGrid,
    PianoRollLaneCellMismatch {
        lane: String,
        lane_kind: String,
        cell_kind: String,
    },
}

Error returned when a musical value violates a model invariant.

Variants

NegativeDuration

A duration was negative.

NegativeOnset

An onset position was negative.

InvalidTempo

A tempo was zero or otherwise non-positive.

InvalidTimeSignature

A time signature had a zero denominator.

NonMonophonicMelody

A melody contained overlapping voices instead of a single line.

InvalidTimeRange

A play range ended before it started.

InvalidPpq

A play pulses-per-quarter resolution was zero.

InvalidLaneTarget

A lane targeted something incompatible with its event kind.

Fields

lane: String

Name of the offending lane.

target: String

The invalid target the lane referenced.

InvalidPianoRollGrid

A piano-roll grid had a non-positive ticks-per-quarter or step.

PianoRollLaneCellMismatch

A piano-roll lane held a cell kind it cannot accept.

Fields

lane: String

Name of the offending lane.

lane_kind: String

Kind of the lane.

cell_kind: String

Kind of the cell that did not fit the lane.

Trait Implementations

impl Clone for MusicError

fn clone(&self) -> MusicError

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, __formatter: &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 From<MusicError> for ConversionError

fn from(source: MusicError) -> Self

Converts to this type from the input type.

impl PartialEq for MusicError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MusicError