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- # ex:ts=4:sw=4:sts=4:et
- # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
- #
- #
- # Copyright (C) 2006 Holger Hans Peter Freyther
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License version 2 as
- # published by the Free Software Foundation.
- #
- # 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.
- """
- What is a method pool?
- BitBake has a global method scope where .bb, .inc and .bbclass
- files can install methods. These methods are parsed from strings.
- To avoid recompiling and executing these string we introduce
- a method pool to do this task.
- This pool will be used to compile and execute the functions. It
- will be smart enough to
- """
- from bb.utils import better_compile, better_exec
- from bb import error
- # A dict of modules we have handled
- # it is the number of .bbclasses + x in size
- _parsed_methods = { }
- _parsed_fns = { }
- def insert_method(modulename, code, fn):
- """
- Add code of a module should be added. The methods
- will be simply added, no checking will be done
- """
- comp = better_compile(code, "<bb>", fn )
- better_exec(comp, __builtins__, code, fn)
- # now some instrumentation
- code = comp.co_names
- for name in code:
- if name in ['None', 'False']:
- continue
- elif name in _parsed_fns and not _parsed_fns[name] == modulename:
- error( "Error Method already seen: %s in' %s' now in '%s'" % (name, _parsed_fns[name], modulename))
- else:
- _parsed_fns[name] = modulename
- def check_insert_method(modulename, code, fn):
- """
- Add the code if it wasnt added before. The module
- name will be used for that
- Variables:
- @modulename a short name e.g. base.bbclass
- @code The actual python code
- @fn The filename from the outer file
- """
- if not modulename in _parsed_methods:
- return insert_method(modulename, code, fn)
- _parsed_methods[modulename] = 1
- def parsed_module(modulename):
- """
- Inform me file xyz was parsed
- """
- return modulename in _parsed_methods
- def get_parsed_dict():
- """
- shortcut
- """
- return _parsed_methods
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