1 # Copyright (C) 2012-2013 Team tiramisu (see AUTHORS 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 PropertiesOptionError, ConfigError
23 from tiramisu.i18n import _
24 # ____________________________________________________________
25 # automatic Option object
26 #def special_owner_factory(name, owner, value,
27 # callback, callback_params=None, config=None):
28 # # in case of an 'auto' and a 'fill' without a value,
29 # # we have to carry out a calculation
30 # return calc_factory(name, callback, callback_params, config)
33 def carry_out_calculation(name, config, callback, callback_params, index=None):
34 "a function that carries out a calculation for an option's value"
35 #callback, callback_params = option.getcallback()
36 #if callback_params is None:
37 # callback_params = {}
42 for key, values in callback_params.items():
44 if type(value) == tuple:
45 path, check_disabled = value
49 raise ConfigError(_('no config specified but needed'))
51 opt_value = config._getattr(path, force_permissive=True)
52 opt = config.unwrap_from_path(path)
53 except PropertiesOptionError, err:
56 raise PropertiesOptionError(err, err.proptype)
57 is_multi = opt.impl_is_multi()
59 if opt_value is not None:
60 len_value = len(opt_value)
61 if len_multi != 0 and len_multi != len_value:
62 raise ConfigError('unable to carry out a '
63 'calculation, option values with'
64 ' multi types must have same '
65 'length for: ' + name)
68 tcparams.setdefault(key, []).append((opt_value, is_multi))
70 tcparams.setdefault(key, []).append((value, False))
77 range_ = range(len_multi)
81 for key, couples in tcparams.items():
82 for couple in couples:
83 value, ismulti = couple
84 if ismulti and value is not None:
86 params.append(value[incr])
89 tcp[key] = value[incr]
97 calc = calculate(name, callback, params, tcp)
101 if isinstance(calc, list):
110 for key, couples in tcparams.items():
111 for couple in couples:
117 return calculate(name, callback, params, tcp)
120 def calculate(name, callback, params, tcparams):
121 """wrapper that launches the 'callback'
123 :param callback: callback name
124 :param params: in the callback's arity, the unnamed parameters
125 :param tcparams: in the callback's arity, the named parameters
128 return callback(*params, **tcparams)