On Thu, Oct 4, 2012 at 9:31 AM, Left Right <olegsivo...@gmail.com> wrote:
> Builder.py:537
>
> def _execute(self, env, target, source, overwarn={}, executor_kw={}):
> # We now assume that target and source are lists or None.
> if self.src_builder:
> source = self.src_builder_sources(env, source, overwarn)
>
> Hi. I've ran into this (what seems to be a bug) while trying to find
> the builder of a created file node.
>
> It looks like for you this test is never true. Because if the
> src_builder was a builder object, it would be implementing a
> __nonzero__ method, which throws:
> InternalError: Do not test for the Node.builder attribute directly;
> use Node.has_builder() instead
>
> I ran into this eventually by trying to assign to src_builder property
> of a builder (this is something where I'm blur, but can't find any
> other way to link a file node to its builder). So that when I call
> _execute, self.src_builder exists, but can't be used inside condition.
> :|
>
> I'm most certain I don't quite understand yet how exactly to do what I
> need (so, I probably shouldn't even get there), just stumbled over
> this thing by accident.
>
>
> ====================
>
> The question: suppose I have a generator function like this:
>
> def asGenerator(source, target, env, for_signature):
> print "source: %s" % source[0].get_path()
> print "abs dir: %s" % source[0].src_builder
>
> Suppose I have created a file node (which is source[0].get_path()) like so:
>
> class FlashBuilderBase(BuilderBase):
> """
> An extension needed to run Flash() target with no arguments
> """
> def __init__(self, # long list of arguments...
> **overrides):
> self.fb_project_settings = None
> self.fd_project_settings = None
> return super(FlashBuilderBase, self).__init__(# same arguments
> once again...
> **overrides)
>
> def _execute(self, env, target, source, overwarn={}, executor_kw={}):
> # ...
> self.fb_project = # some info I need about the project file ...
> if not target:
> target = # some code to find the target ...
>
> if not source:
> source = target # this is the file, which later becomes
> the source[0] in asGenerator
>
> return super(FlashBuilderBase, self)._execute(
> env, target, source, overwarn, executor_kw)
>
> Now, I have to get reference this builder (FlashBuilderBase) from
> source[0] in asGenerator - how'd I do that?
You seem to be very confused, if you're that deep into the internals
and undocumented methods. :-)
Can you back up a few steps and say what you're trying to do? (Note
that you say you're creating a File Node, but the code you show is for
a subclass of Builder, which is pretty odd.) Have you been through
Chapter 18 of the User's Guide?
http://www.scons.org/doc/production/HTML/scons-user/c3621.html
--
Gary
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