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# coding: UTF-8
# Copyright 2009 Thomas Jourdan
#
# 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 3 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#_CONSTRAINT = 'constraint'
INT_1_OF_N = 11
INT_M_OF_N = 12
INT_RANGE = 13
FLOAT_RANGE = 22
STRING_1_OF_N = 31
STRING_M_OF_N = 32
class ConstraintPool(object):
"""ConstraintPool is a singleton.
Use ConstraintPool.get_pool() to get an instance.
"""
_constraintpool = None
_known_keys = None
def __init__(self):
self._overwrite = {}
self._my_defaults()
@staticmethod
def get_pool():
if ConstraintPool._constraintpool == None:
ConstraintPool._constraintpool = ConstraintPool()
return ConstraintPool._constraintpool
def _generate_key(self, class_key, attribute_key):
"""
pre: class_key is not None
pre: attribute_key is not None
"""
return class_key + '/' + attribute_key
def get(self, caller, attribute_key):
"""
#pre: 'cdef' in dir(caller) or 'base_cdef' in dir(caller)
pre: True if 'cdef' not in dir(caller) else caller.cdef is not None and len(caller.cdef) > 0
pre: True if 'base_cdef' not in dir(caller) else caller.base_cdef is not None and len(caller.base_cdef) > 0
pre: caller.path is not None
pre: attribute_key is not None
post: __return__ is not None
"""
primary_key = self._generate_key(caller.path, attribute_key)
secondary_key = self._generate_key('*', attribute_key)
result = None
if self._overwrite.has_key(primary_key):
result = self._overwrite[primary_key]
# print '>> over', primary_key, result
elif self._overwrite.has_key(secondary_key):
result = self._overwrite[secondary_key]
# print '>> over', primary_key, result
else:
if 'cdef' in dir(caller):
result = self._search_constraint(caller.cdef, attribute_key)
if result is None and 'base_cdef' in dir(caller):
result = self._search_constraint(caller.base_cdef, attribute_key)
# print '>> cdef', primary_key, result
if result is not None:
self._add_key(primary_key)
return result
def _search_constraint(self, caller, attribute_key):
result = None
for definition in caller:
if definition['bind'] == attribute_key:
if definition['domain'] == INT_1_OF_N:
result = [x[1] for x in definition['enum']]
if definition['domain'] == INT_M_OF_N:
result = [x[1] for x in definition['enum']]
if definition['domain'] == INT_RANGE:
result = (definition['min'], definition['max'])
if definition['domain'] == FLOAT_RANGE:
result = (definition['min'], definition['max'])
if definition['domain'] == STRING_1_OF_N:
result = definition['enum']
if definition['domain'] == STRING_M_OF_N:
result = definition['enum']
return result
def is_overwritten(self, caller, attribute_key):
return False
def set(self, class_key, attribute_key, constraint):
"""
pre: class_key is not None
pre: class_key.startswith('/') or class_key.startswith('*')
pre: attribute_key is not None
pre: constraint is not None
"""
primary_key = self._generate_key(class_key, attribute_key)
self._overwrite[primary_key] = constraint
def clear_all(self):
"""
"""
self._overwrite = {}
def listknown_keys(self):
"""
"""
return [] if ConstraintPool._known_keys is None \
else ConstraintPool._known_keys
def _add_key(self, key):
"""
"""
# file_path = '/dev/shm/minmal_known_keys.mkey'
# if ConstraintPool._known_keys is None:
# ConstraintPool._known_keys = model_population.read_file(file_path)
if ConstraintPool._known_keys is None:
ConstraintPool._known_keys = []
if key not in ConstraintPool._known_keys:
ConstraintPool._known_keys.append(key)
# model_population.write_file(file_path, ConstraintPool._known_keys)
def _my_defaults(self):
#TODO read from persistence, provide an constraint editor
# self.set('*', 'layertypeconstraint', ['markovchain', ])
# self.set('*', 'colorconstraint', ['colorconstraint_none', ])
# self.set('*', 'layertypeconstraint', ['voronoidiagram', 'markovchain', ])
# self.set('*', 'stamptypeconstraint', ['svg',])
# self.set('*', 'stamptypeconstraint', ['glyph',])
# self.set('*', 'glyphcategoryconstraint', ['Sc','Po',])
# self.set('*', 'themeconstraint', ['cybernetic_serendipity',])
# self.set('*', 'samplertypeconstraint', ['squaregrid',])
# self.set('*', 'number_of_statesconstraint', (5, 5))
# self.set('*', 'tilesconstraint', (3, 3))
# self.set('/Protozoon', 'layertypeconstraint', ['image', 'letterpress', 'markovchain', 'filledspline', 'voronoidiagram', ])
# self.set('/Protozoon', 'layertypeconstraint', ['referencepattern', 'image', 'letterpress', 'markovchain', ])
# self.set('/Protozoon', 'layertypeconstraint', ['filledspline', 'letterpress', 'markovchain', ])
# self.set('/Protozoon', 'layertypeconstraint', ['filledspline', ])
# self.set('/Protozoon', 'layertypeconstraint', ['voronoidiagram', ])
# self.set('/Protozoon', 'layertypeconstraint', ['referencepattern'])
# self.set('/Protozoon', 'layertypeconstraint', ['image', ])
# self.set('/Protozoon', 'layertypeconstraint', ['markovchain', ])
# self.set('/Protozoon', 'layertypeconstraint', ['letterpress', ])
# self.set('/Protozoon', 'mergertypeconstraint', ['layermask', ])
# self.set('/Protozoon', 'mergertypeconstraint', ['flip', ])
# self.set('/Protozoon', 'mergertypeconstraint', ['flip', 'rectangulartile', 'mask', 'straight', 'border', ])
# self.set('/Protozoon', 'mergertypeconstraint', ['alphaimage', ])
pass
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