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"""scons.Node.Python
Python nodes.
"""
#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import SCons.Node
class ValueNodeInfo(SCons.Node.NodeInfoBase):
pass
class ValueBuildInfo(SCons.Node.BuildInfoBase):
pass
class Value(SCons.Node.Node):
"""A class for Python variables, typically passed on the command line
or generated by a script, but not from a file or some other source.
"""
NodeInfo = ValueNodeInfo
BuildInfo = ValueBuildInfo
def __init__(self, value):
SCons.Node.Node.__init__(self)
self.value = value
def __str__(self):
return repr(self.value)
def build(self):
"""A "builder" for Values."""
pass
current = SCons.Node.Node.children_are_up_to_date
def is_under(self, dir):
# Make Value nodes get built regardless of
# what directory scons was run from. Value nodes
# are outside the filesystem:
return 1
def get_contents(self):
"""The contents of a Value are the concatenation
of all the contents of its sources with the node's value itself."""
contents = str(self.value)
for kid in self.children(None):
contents = contents + kid.get_contents()
return contents
def get_csig(self, calc=None):
"""Because we're a Python value node and don't have a real
timestamp, we get to ignore the calculator and just use the
value contents."""
try:
binfo = self.binfo
except AttributeError:
binfo = self.binfo = self.new_binfo()
try:
return binfo.ninfo.csig
except AttributeError:
binfo.ninfo.csig = self.get_contents()
self.store_info(binfo)
return binfo.ninfo.csig
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