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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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