# Tai Sakuma <tai.sakuma@gmail.com>
import itertools
##__________________________________________________________________||
class Base:
"""The base class of the classes All and Any
"""
def __init__(self, name, selections):
self.name = name
self.selections = list(selections)
self._repr_pairs = [
('name', self.name),
('selections', self.selections),
]
def __repr__(self):
return '{}({})'.format(
self.__class__.__name__,
', '.join(['{}={!r}'.format(n, v) for n, v in self._repr_pairs]),
)
def __str__(self):
nwidth = max(len(n) for n, _ in self._repr_pairs)
nwidth += 4
nwidth_nested = 12
lines = [
'{}:'.format(self.__class__.__name__),
'{:>{}}: {!r}'.format('name', nwidth, self.name),
'{:>{}}:'.format('selections', nwidth),
]
nested_lines = list(itertools.chain(*[str(s).split('\n') for s in self.selections]))
lines.extend(
['{}{}'.format(' '*nwidth_nested, str(l)) for l in nested_lines]
)
return '\n'.join(lines)
def add(self, selection):
self.selections.append(selection)
def begin(self, event):
for s in self.selections:
if hasattr(s, 'begin'): s.begin(event)
def event(self, event):
return self(event)
def end(self):
for s in self.selections:
if hasattr(s, 'end'): s.end()
##__________________________________________________________________||
[docs]class All(Base):
"""select events that meet all conditions
"""
[docs] def __init__(self, name='All', selections=[ ]):
if name is None:
name = 'All'
super(All, self).__init__(name, selections)
def __call__(self, event):
for s in self.selections:
if not s(event):
return False
return True
##__________________________________________________________________||
[docs]class Any(Base):
"""select events that meet any of the conditions
"""
[docs] def __init__(self, name='Any', selections=[ ]):
if name is None:
name = 'Any'
super(Any, self).__init__(name, selections)
def __call__(self, event):
for s in self.selections:
if s(event):
return True
return False
##__________________________________________________________________||
[docs]class Not:
"""select events that do NOT pass the selection
"""
[docs] def __init__(self, selection, name='Not'):
if name is None:
name = 'Not'
self.name = name
self.selection = selection
def __repr__(self):
return '{}(name={!r}, selection={!r})'.format(
self.__class__.__name__,
self.name,
self.selection
)
def begin(self, event):
if hasattr(self.selection, 'begin'):
self.selection.begin(event)
def __call__(self, event):
return not self.selection(event)
def event(self, event):
return self(event)
def end(self):
if hasattr(self.selection, 'end'):
self.selection.end()
##__________________________________________________________________||