tiramisu/autolib.py

95 lines
3.7 KiB
Python

# Copyright (C) 2012 Team tiramisu (see README for all contributors)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# The original `Config` design model is unproudly borrowed from
# the rough gus of pypy: pypy: http://codespeak.net/svn/pypy/dist/pypy/config/
# the whole pypy projet is under MIT licence
# ____________________________________________________________
"enables us to carry out a calculation and return an option's value"
from tiramisu.error import DisabledOptionError, SpecialOwnersError
# ____________________________________________________________
# automatic Option object
special_owners = ['auto', 'fill']
def special_owner_factory(name, owner, value,
callback, callback_params=None, config=None):
# in case of an 'auto' and a 'fill' without a value,
# we have to carry out a calculation
return calc_factory(name, callback, callback_params, config)
def calc_factory(name, callback, callback_params, config):
# FIXME we have to know the exact status of the config
# not to disrupt it
# config.freeze()
if callback_params is None:
callback_params = {}
tcparams = {}
one_is_multi = False
len_multi = 0
for key, value in callback_params.items():
if type(value) == tuple:
path, check_disabled = value
try:
opt_value = getattr(config, path)
opt = config.unwrap_from_path(path)
except DisabledOptionError, e:
if chek_disabled:
continue
raise DisabledOptionError(e)
is_multi = opt.is_multi()
if is_multi:
if opt_value != None:
len_value = len(opt_value)
if len_multi != 0 and len_multi != len_value:
raise SpecialOwnersError('unable to carry out a calculation, '
'option values with multi types must have same length for: '
+ name)
len_multi = len_value
one_is_multi = True
tcparams[key] = (opt_value, is_multi)
else:
tcparams[key] = (value, False)
if one_is_multi:
ret = []
for incr in range(len_multi):
tcp = {}
for key, couple in tcparams.items():
value, ismulti = couple
if ismulti and value != None:
tcp[key] = value[incr]
else:
tcp[key] = value
ret.append(calculate(name, callback, tcp))
return ret
else:
tcp = {}
for key, couple in tcparams.items():
tcp[key] = couple[0]
return calculate(name, callback, tcp)
def calculate(name, callback, tcparams):
try:
# XXX not only creole...
from creole import eosfunc
return getattr(eosfunc, callback)(**tcparams)
except AttributeError, err:
import traceback
traceback.print_exc()
raise SpecialOwnersError("callback: {0} return error {1} for "
"option: {2}".format(callback, str(err), name))