13 class Chord(): 13 class Chord(): 14 def __init__(self, value, duration=.5, chord_type="major", octave=5): 14 def __init__(self, value, duration=.5, chord_type="major", octave=5): 15 self.value = value 15 self.value = value 16 self.duration = duration 16 self.duration = duration 17 self.chord_type = chord_type 17 self.chord_type = chord_type 18 self.octave = octave 18 self.octave = octave 19 def __repr__(self): 19 def __repr__(self): 20 return "Chord %s %s %s" % (self.value, self.duration, self.chord_type, s | 20 return "Chord %s %d %s %s" % (self.value, self.duration, self.chord_type 21 21 22 class Rest(): 22 class Rest(): 23 def __init__(self, duration=.25): 23 def __init__(self, duration=.25): 24 self.duration = duration 24 self.duration = duration 25 def __repr__(self): 25 def __repr__(self): 26 return "Rest node %s" % self.duration 26 return "Rest node %s" % self.duration 27 27 ................................................................................................................................................................................ 33 "BASENOTE", 33 "BASENOTE", 34 "ACCIDENTAL", 34 "ACCIDENTAL", 35 "REST", 35 "REST", 36 "OCTAVE", 36 "OCTAVE", 37 "CHORD_TYPE", 37 "CHORD_TYPE", 38 "PAREN", 38 "PAREN", 39 "SYNCOPATE", 39 "SYNCOPATE", > 40 "NODE", 40 ) 41 ) 41 42 42 t_ignore = " |" 43 t_ignore = " |" 43 44 44 #t_BASENOTE = r"[A-Ga-g]" < 45 t_BASENOTE = r"I+V?|VI*|i+v?|vi*" 45 t_BASENOTE = r"I+V?|VI*|i+v?|vi*" 46 t_ACCIDENTAL = r"\^{1,2}|_{1,2}|=" 46 t_ACCIDENTAL = r"\^{1,2}|_{1,2}|=" 47 t_REST = r"z" 47 t_REST = r"z" 48 t_OCTAVE = r"'+|,+" 48 t_OCTAVE = r"'+|,+" 49 t_CHORD_TYPE = r"m|7|m7|0|o|\+|mb5|sus|sus4|maj7|mmaj7|7sus4|dim|dim7|7b5|m7 | 49 t_CHORD_TYPE = r"m|7|m7|0|o|mb5|sus|sus4|maj7|mmaj7|7sus4|dim|dim7|7b5|m7b5| 50 t_PAREN = "\(|\)" 50 t_PAREN = "\(|\)" 51 t_SYNCOPATE = "\+|-" 51 t_SYNCOPATE = "\+|-" > 52 # t_NODE = "\w*(?!(([Vv][Ii]{0,3})|([Ii][Vv]?)))\w+" > 53 t_NODE = "\S+" 52 54 53 def t_NOTE_LENGTH(t): 55 def t_NOTE_LENGTH(t): 54 r"/?\d+" 56 r"/?\d+" 55 multiplier = float(t.value.strip("/")) 57 multiplier = float(t.value.strip("/")) 56 if t.value.startswith("/"): 58 if t.value.startswith("/"): 57 multiplier = 1/multiplier 59 multiplier = 1/multiplier 58 t.value = multiplier 60 t.value = multiplier ................................................................................................................................................................................ 67 69 68 # Parse (yacc) 70 # Parse (yacc) 69 71 70 def p_note_list(p): 72 def p_note_list(p): 71 '''score : score note 73 '''score : score note 72 | score chord 74 | score chord 73 | score rest 75 | score rest > 76 | score node 74 ''' 77 ''' 75 p[0] = p[1] + [p[2]] 78 p[0] = p[1] + [p[2]] 76 79 77 def p_score(p): 80 def p_score(p): 78 '''score : note 81 '''score : note 79 | chord 82 | chord 80 | rest 83 | rest 81 ''' 84 ''' 82 p[0] = [p[1]] 85 p[0] = [p[1]] 83 86 > 87 > 88 def p_node(p): > 89 '''node : NODE > 90 ''' > 91 p[0] = p[1] > 92 84 93 85 def p_chord_length(p): 94 def p_chord_length(p): 86 ''' chord : chord NOTE_LENGTH 95 ''' chord : chord NOTE_LENGTH 87 ''' 96 ''' 88 new_note = p[1] 97 new_note = p[1] 89 new_note.duration = p[2] 98 new_note.duration = p[2] 90 p[0] = new_note 99 p[0] = new_note ................................................................................................................................................................................ 101 def p_chord(p): 110 def p_chord(p): 102 '''chord : PAREN note PAREN 111 '''chord : PAREN note PAREN 103 | PAREN note CHORD_TYPE PAREN 112 | PAREN note CHORD_TYPE PAREN 104 ''' 113 ''' 105 pitch = p[2].value 114 pitch = p[2].value 106 pitch = pitch.upper() 115 pitch = pitch.upper() 107 p[0] = Chord(value=pitch, octave=default_octave) 116 p[0] = Chord(value=pitch, octave=default_octave) 108 if len(p) > 3: | 117 if len(p) > 4: 109 p[0].chord_type = p[3] 118 p[0].chord_type = p[3] 110 119 111 120 112 def p_note_syncopate(p): 121 def p_note_syncopate(p): 113 ''' note : note SYNCOPATE 122 ''' note : note SYNCOPATE 114 ''' 123 ''' 115 note.syncopate = p[2] | 124 p[1].syncopate = p[2] > 125 p[0] = p[1] 116 126 117 127 118 def p_accidental(p): 128 def p_accidental(p): 119 '''note : ACCIDENTAL note 129 '''note : ACCIDENTAL note 120 ''' 130 ''' 121 p[2].accidental = p[1] 131 p[2].accidental = p[1] 122 p[0] = p[2] 132 p[0] = p[2]