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# Copyright (C) 2012 Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
class Blob(object):
@staticmethod
def create_blob(morph):
if morph.kind == 'stratum':
return Stratum(morph)
elif morph.kind == 'chunk':
return Chunk(morph)
elif morph.kind == 'system':
return System(morph)
else:
raise TypeError('Morphology %s has an unknown type: %s' %
(morph.filename, morph.kind))
def __init__(self, morph):
self.parents = []
self.morph = morph
self.dependencies = []
self.dependents = []
def add_parent(self, parent):
if not parent in self.parents:
self.parents.append(parent)
def remove_parent(self, parent):
if parent in self.parents:
self.parents.remove(parent)
def add_dependency(self, other):
if not other in self.dependencies:
self.dependencies.append(other)
if not self in other.dependents:
other.dependents.append(self)
def remove_dependency(self, other):
self.dependencies.remove(other)
other.dependents.remove(self)
def depends_on(self, other):
return other in self.dependencies
@property
def chunks(self):
if self.morph.chunks:
return self.morph.chunks
else:
return { self.morph.name: ['.'] }
def __eq__(self, other):
return self.morph == other.morph
def __hash__(self):
return hash(self.morph)
def __str__(self): # pragma: no cover
return str(self.morph)
class Chunk(Blob):
pass
class Stratum(Blob):
pass
class System(Blob):
pass
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