This commit is contained in:
Max Bradbury 2022-09-27 08:43:12 +01:00
parent 8148e3f725
commit a7c020f785
1 changed files with 63 additions and 0 deletions

63
src/note.rs Normal file
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use core::fmt;
use std::fmt::Formatter;
#[derive(Clone, Debug, PartialEq)]
pub enum RelativeNote {
C,
CSharp,
D,
DSharp,
E,
F,
FSharp,
G,
GSharp,
A,
ASharp,
B,
}
#[derive(Clone, Debug, PartialEq)]
pub struct Note {
relative: RelativeNote,
octave: u8, // upper limit? 8?
}
impl fmt::Display for Note {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
write!(
f,
"{}{}",
match self.relative {
RelativeNote::C => "C",
RelativeNote::CSharp => "C#",
RelativeNote::D => "D",
RelativeNote::DSharp => "D#",
RelativeNote::E => "E",
RelativeNote::F => "F",
RelativeNote::FSharp => "F#",
RelativeNote::G => "G",
RelativeNote::GSharp => "G#",
RelativeNote::A => "A",
RelativeNote::ASharp => "A#",
RelativeNote::B => "B",
},
self.octave
)
}
}
#[cfg(test)]
mod test {
use crate::note::{Note, RelativeNote};
#[test]
fn c4() {
assert_eq!(Note { relative: RelativeNote::C, octave: 4 }.to_string(), "C4");
}
#[test]
fn a_sharp_0() {
assert_eq!(Note { relative: RelativeNote::ASharp, octave: 0 }.to_string(), "A#0");
}
}