1 # Copyright (C) 2012 Team tiramisu (see README for all contributors)
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 2 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program; if not, write to the Free Software
15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 # The original `Config` design model is unproudly borrowed from
18 # the rough gus of pypy: pypy: http://codespeak.net/svn/pypy/dist/pypy/config/
19 # the whole pypy projet is under MIT licence
20 # ____________________________________________________________
21 "enables us to carry out a calculation and return an option's value"
22 from tiramisu.error import DisabledOptionError, SpecialOwnersError
23 # ____________________________________________________________
24 # automatic Option object
25 special_owners = ['auto', 'fill']
27 def special_owner_factory(name, owner, value,
28 callback, callback_params=None, config=None):
29 # in case of an 'auto' and a 'fill' without a value,
30 # we have to carry out a calculation
31 return calc_factory(name, callback, callback_params, config)
33 def calc_factory(name, callback, callback_params, config):
34 # FIXME we have to know the exact status of the config
37 if callback_params is None:
42 for key, value in callback_params.items():
43 if type(value) == tuple:
44 path, check_disabled = value
46 opt_value = getattr(config, path)
47 opt = config.unwrap_from_path(path)
48 except DisabledOptionError, e:
51 raise DisabledOptionError(e)
52 is_multi = opt.is_multi()
55 len_value = len(opt_value)
56 if len_multi != 0 and len_multi != len_value:
57 raise SpecialOwnersError('unable to carry out a calculation, '
58 'option values with multi types must have same length for: '
62 tcparams[key] = (opt_value, is_multi)
64 tcparams[key] = (value, False)
68 for incr in range(len_multi):
70 for key, couple in tcparams.items():
71 value, ismulti = couple
72 if ismulti and value != None:
73 tcp[key] = value[incr]
76 ret.append(calculate(name, callback, tcp))
80 for key, couple in tcparams.items():
82 return calculate(name, callback, tcp)
84 def calculate(name, callback, tcparams):
86 # XXX not only creole...
87 from creole import eosfunc
88 return getattr(eosfunc, callback)(**tcparams)
89 except AttributeError, err:
92 raise SpecialOwnersError("callback: {0} return error {1} for "
93 "option: {2}".format(callback, str(err), name))