Package jazzparser :: Package formalisms :: Package music_halfspan :: Module syntax :: Class Sign

Class Sign

          object --+    
                   |    
base.syntax.SignBase --+
                       |
                      Sign

A CCG category and its associated semantics: a CCG sign.

Keeps a note of which rules have been applied and which other signs they were applied to, so that the parser can avoid re-applying the same rule to the same inputs again.

This overrides the base sign implementation with a few formalism-specific things.

Instance Methods

[hide private]

__init__(self, *args, **kwargs)
x.__init__(...) initializes x; see help(type(x)) for signature

source code

copy(self)

source code

apply_lexical_features(self, features)
Given a dictionary of features, applies any changes to this sign that need to be made before it is added to the chart on the basis of surface-level features (e.g.

source code

__str__(self)
str(x)

source code

format_result(self)
Format the sign as a string for display in a list of results.

source code

set_time(self, time)
Must be implemented by subclasses.

source code

set_duration(self, duration)
Must be implemented by subclasses.

source code

Inherited from base.syntax.SignBase: __eq__, __hash__, __ne__, __repr__, check_rule_applied, format_latex_result, note_rule_applied, to_latex

Inherited from object: __delattr__, __format__, __getattribute__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, *args, **kwargs)
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Parameters:

formalism - the formalism of the subclass.
category - the top level node of the category instance.
semantics - the semantics part of the sign
derivation_trace - a derivation trace to store how the sign was derived (optional).

Overrides: object.__init__

(inherited documentation)

copy(self)

source code

Overrides: base.syntax.SignBase.copy

apply_lexical_features(self, features)

source code

Given a dictionary of features, applies any changes to this sign that need to be made before it is added to the chart on the basis of surface-level features (e.g. pitch, time).

Overrides: base.syntax.SignBase.apply_lexical_features: (inherited documentation)

str(self)
(Informal representation operator)

source code

str(x)

Overrides: object.__str__: (inherited documentation)

format_result(self)

source code

Format the sign as a string for display in a list of results. By default, this just uses the class' str(), but subclasses may provide an alternative format if required (you may want signs to look different in results and in, e.g., chart representation).

Overrides: base.syntax.SignBase.format_result: (inherited documentation)

set_time(self, time)

source code

Must be implemented by subclasses. Adds timing information to components such that the start time of the whole sign is encoded as the given time.

Overrides: base.syntax.SignBase.set_time: (inherited documentation)

set_duration(self, duration)

source code

Must be implemented by subclasses. Adds duration information to all components that store durations.

Overrides: base.syntax.SignBase.set_duration: (inherited documentation)

Class Sign

__init__(self, *args, **kwargs) (Constructor)

copy(self)

apply_lexical_features(self, features)

__str__(self) (Informal representation operator)

format_result(self)

set_time(self, time)

set_duration(self, duration)

init(self, *args, **kwargs)
(Constructor)

str(self)
(Informal representation operator)