spiffyscore

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Differences From Artifact [3a88b8ab43]:

To Artifact [9c47a4ff24]:


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#!/usr/bin/env python

from ply import lex, yacc
class Note():
    def __init__(self, value, duration=.25, octave=8):
        self.value = value
        self.duration = duration
        self.octave = octave
        self.accidental = None
    def __repr__(self):
        return "Note %s %s %s" % (self.value, self.duration, self.octave)

class Chord():
    def __init__(self, value, duration=.5, chord_type="major"):
        self.value = value
        self.duration = duration
        self.chord_type = chord_type

    def __repr__(self):
        return "Chord %s %s %s" % (self.value, self.duration, self.chord_type)


class Rest():
    def __init__(self, duration=.25):
        self.duration = duration
    def __repr__(self):
        return "Rest node %s" % self.duration


def parse(score):
    # Tokenize (lex)
    tokens = (
        "NOTE_LENGTH",
        "BASENOTE",
        "ACCIDENTAL",
        "REST",
        "OCTAVE",













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#!/usr/bin/env python

from ply import lex, yacc
class Note():
    def __init__(self, value, duration=.25, octave=8):
        self.value = value
        self.duration = duration
        self.octave = octave
        self.accidental = None
    def __repr__(self):
        return "Note %s %s %s" % (self.value, self.duration, self.octave)

class Chord():
    def __init__(self, value, duration=.5, chord_type="major", octave=5):
        self.value = value
        self.duration = duration
        self.chord_type = chord_type
        self.octave = octave
    def __repr__(self):
        return "Chord %s %s %s" % (self.value, self.duration, self.chord_type, self.octave)


class Rest():
    def __init__(self, duration=.25):
        self.duration = duration
    def __repr__(self):
        return "Rest node %s" % self.duration


def parse(score, default_octave=8):
    # Tokenize (lex)
    tokens = (
        "NOTE_LENGTH",
        "BASENOTE",
        "ACCIDENTAL",
        "REST",
        "OCTAVE",
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    def p_chord(p):
        '''chord : QUOTE pitch QUOTE
                | QUOTE pitch CHORD_TYPE QUOTE
        '''
        pitch = p[2].value
        pitch = pitch.upper()
        p[0] = Chord(value=pitch)
        if len(p) > 3:
            p[0].chord_type = p[3]


    def p_accidental(p):
        '''pitch : ACCIDENTAL pitch
        '''
        p[2].accidental = p[1]
        p[0] = p[2]

    def p_octave(p):
        '''pitch : pitch OCTAVE
        '''
        count = len(p[2])
        increment_or_decrement = 1 if p[2][0] == "," else -1
        octave = 8 + (count * increment_or_decrement)
        p[1].octave = octave
        p[0] = p[1]

    def p_pitch(p):
        '''pitch : BASENOTE
        '''
        p[0] = Note(p[1])

    def p_rest(p):
        ''' rest : REST
                | REST NOTE_LENGTH
        '''
        p[0] = Rest()
        if len(p) > 2:
            p[0].duration = p[2]

    def p_error(p):
        print "Syntax error at '%s' of element type %s" % (p.value, p.type)
        
    yacc.yacc()

    #print yacc.parse("GFG B'AB,, | g/2fg gab | GFG BAB | d2A AFD")
    return yacc.parse(score)







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    def p_chord(p):
        '''chord : QUOTE pitch QUOTE
                | QUOTE pitch CHORD_TYPE QUOTE
        '''
        pitch = p[2].value
        pitch = pitch.upper()
        p[0] = Chord(value=pitch, octave=default_octave)
        if len(p) > 3:
            p[0].chord_type = p[3]


    def p_accidental(p):
        '''pitch : ACCIDENTAL pitch
        '''
        p[2].accidental = p[1]
        p[0] = p[2]

    def p_pitch_octave(p):
        '''pitch : pitch OCTAVE
        '''
        count = len(p[2])
        increment_or_decrement = 1 if p[2].startswith("'") else -1
        p[1].octave += (count * increment_or_decrement)

        p[0] = p[1]

    def p_pitch(p):
        '''pitch : BASENOTE
        '''
        p[0] = Note(p[1], octave=default_octave)

    def p_rest(p):
        ''' rest : REST
                | REST NOTE_LENGTH
        '''
        p[0] = Rest()
        if len(p) > 2:
            p[0].duration = p[2]

    def p_error(p):
        raise Exception("Syntax error at '%s' of element type %s" % (p.value, p.type))
        
    yacc.yacc()

    #print yacc.parse("GFG B'AB,, | g/2fg gab | GFG BAB | d2A AFD")
    return yacc.parse(score)