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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.
import morphlib
class Source(object):
'''Represent the source to be built.
Has the following properties:
* ``repo`` -- the git repository which contains the source
* ``original_ref`` -- the git ref provided by the user or a morphology
* ``sha1`` -- the absolute git commit id for the revision we use
* ``morphology`` -- the in-memory representation of the morphology we use
* ``filename`` -- basename of the morphology filename
* ``dependencies`` -- list of Sources for build dependencies for us
* ``dependents`` -- list of Source for whom we are a build dependency
The ``dependencies`` and ``dependents`` lists MUST be modified by
the ``add_dependencies`` and ``add_dependent`` methods only.
'''
def __init__(self, repo, original_ref, sha1, morphology, filename):
assert isinstance(morphology, morphlib.morph2.Morphology)
self.repo = repo
self.original_ref = original_ref
self.sha1 = sha1
self.morphology = morphology
self.filename = filename
self.dependencies = []
self.dependents = []
def add_dependency(self, source):
'''Add ``source`` to the dependency list.'''
if source not in self.dependencies:
self.dependencies.append(source)
source.dependents.append(self)
def depends_on(self, source):
'''Do we depend on ``source``?'''
return source in self.dependencies
def __str__(self): # pragma: no cover
return '%s|%s|%s' % (self.repo, self.original_ref, self.filename)
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