# 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