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# Copyright (C) 2012, 2013, 2014-2015 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, see <http://www.gnu.org/licenses/>.
class Artifact(object):
'''Represent a build result generated from a source.
Has the following properties:
* ``source`` -- the source from which the artifact is built
* ``name`` -- the name of the artifact
* ``dependents`` -- list of Sources that need this Artifact to be built
'''
def __init__(self, source, name):
self.source = source
self.name = name
self.dependents = []
def basename(self): # pragma: no cover
return '%s.%s' % (self.source.basename(), str(self.name))
def metadata_basename(self, metadata_name): # pragma: no cover
return '%s.%s' % (self.basename(), metadata_name)
def __str__(self): # pragma: no cover
return '%s|%s' % (self.source, self.name)
def __repr__(self): # pragma: no cover
return 'Artifact(%s)' % str(self)
def walk(self): # pragma: no cover
'''Return list of an artifact and its build dependencies.
The artifacts are returned in depth-first order: an artifact
is returned only after all of its dependencies.
'''
done = set()
def depth_first(a):
if a not in done:
done.add(a)
for dep in a.source.dependencies:
for ret in depth_first(dep):
yield ret
yield a
return list(depth_first(self))
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