Sha256: 6964fea5005951c46e16c51d330c1900c21e206c21e33941c43c4e0689054c4a
Contents?: true
Size: 779 Bytes
Versions: 25
Compression:
Stored size: 779 Bytes
Contents
class HeadMusic::Accidental
ACCIDENTAL_SEMITONES = {
'#' => 1,
'##' => 2,
'b' => -1,
'bb' => -2
}
attr_reader :string
def self.get(identifier)
for_symbol(identifier) || for_interval(identifier)
end
def self.for_symbol(identifier)
@accidentals ||= {}
@accidentals[identifier.to_s] ||= new(identifier.to_s) if ACCIDENTAL_SEMITONES.keys.include?(identifier.to_s)
end
def self.for_interval(semitones)
@accidentals ||= {}
@accidentals[semitones.to_i] ||= ACCIDENTAL_SEMITONES.key(semitones.to_i)
end
def initialize(string)
@string = string
end
def to_s
string
end
def ==(value)
to_s == value.to_s
end
def semitones
ACCIDENTAL_SEMITONES.fetch(string, 0)
end
private_class_method :new
end
Version data entries
25 entries across 25 versions & 1 rubygems