/usr/lib/python2.7/dist-packages/trytond/pyson.py is in tryton-server 3.4.0-3+deb8u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#this repository contains the full copyright notices and license terms.
try:
import simplejson as json
except ImportError:
import json
import datetime
from dateutil.relativedelta import relativedelta
from functools import reduce
class PYSON(object):
def pyson(self):
raise NotImplementedError
def types(self):
raise NotImplementedError
@staticmethod
def eval(dct, context):
raise NotImplementedError
def __invert__(self):
if self.types() != set([bool]):
return Not(Bool(self))
else:
return Not(self)
def __and__(self, other):
if (isinstance(other, PYSON)
and other.types() != set([bool])):
other = Bool(other)
if (isinstance(self, And)
and not isinstance(self, Or)):
self._statements.append(other)
return self
if self.types() != set([bool]):
return And(Bool(self), other)
else:
return And(self, other)
def __or__(self, other):
if (isinstance(other, PYSON)
and other.types() != set([bool])):
other = Bool(other)
if isinstance(self, Or):
self._statements.append(other)
return self
if self.types() != set([bool]):
return Or(Bool(self), other)
else:
return Or(self, other)
def __eq__(self, other):
return Equal(self, other)
def __ne__(self, other):
return Not(Equal(self, other))
def __gt__(self, other):
return Greater(self, other)
def __ge__(self, other):
return Greater(self, other, True)
def __lt__(self, other):
return Less(self, other)
def __le__(self, other):
return Less(self, other, True)
def get(self, k, d=''):
return Get(self, k, d)
def in_(self, obj):
return In(self, obj)
def contains(self, k):
return In(k, self)
class PYSONEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, PYSON):
return obj.pyson()
elif isinstance(obj, datetime.date):
if isinstance(obj, datetime.datetime):
return DateTime(obj.year, obj.month, obj.day,
obj.hour, obj.minute, obj.second, obj.microsecond
).pyson()
else:
return Date(obj.year, obj.month, obj.day).pyson()
return super(PYSONEncoder, self).default(obj)
class PYSONDecoder(json.JSONDecoder):
def __init__(self, context=None):
self.__context = context or {}
super(PYSONDecoder, self).__init__(object_hook=self._object_hook)
def _object_hook(self, dct):
if '__class__' in dct:
klass = globals().get(dct['__class__'])
if klass and hasattr(klass, 'eval'):
return klass.eval(dct, self.__context)
return dct
class Eval(PYSON):
def __init__(self, value, default=''):
super(Eval, self).__init__()
self._value = value
self._default = default
def pyson(self):
return {
'__class__': 'Eval',
'v': self._value,
'd': self._default,
}
def types(self):
if isinstance(self._default, PYSON):
return self._default.types()
else:
return set([type(self._default)])
@staticmethod
def eval(dct, context):
return context.get(dct['v'], dct['d'])
class Not(PYSON):
def __init__(self, value):
super(Not, self).__init__()
if isinstance(value, PYSON):
assert value.types() == set([bool]), 'value must be boolean'
else:
assert isinstance(value, bool), 'value must be boolean'
self._value = value
def pyson(self):
return {
'__class__': 'Not',
'v': self._value,
}
def types(self):
return set([bool])
@staticmethod
def eval(dct, context):
return not dct['v']
class Bool(PYSON):
def __init__(self, value):
super(Bool, self).__init__()
self._value = value
def pyson(self):
return {
'__class__': 'Bool',
'v': self._value,
}
def types(self):
return set([bool])
@staticmethod
def eval(dct, context):
return bool(dct['v'])
class And(PYSON):
def __init__(self, *statements):
super(And, self).__init__()
for statement in statements:
if isinstance(statement, PYSON):
assert statement.types() == set([bool]), \
'statement must be boolean'
else:
assert isinstance(statement, bool), \
'statement must be boolean'
assert len(statements) >= 2, 'must have at least 2 statements'
self._statements = list(statements)
def pyson(self):
return {
'__class__': 'And',
's': self._statements,
}
def types(self):
return set([bool])
@staticmethod
def eval(dct, context):
return bool(reduce(lambda x, y: x and y, dct['s']))
class Or(And):
def pyson(self):
res = super(Or, self).pyson()
res['__class__'] = 'Or'
return res
@staticmethod
def eval(dct, context):
return bool(reduce(lambda x, y: x or y, dct['s']))
class Equal(PYSON):
def __init__(self, statement1, statement2):
super(Equal, self).__init__()
if isinstance(statement1, PYSON):
types1 = statement1.types()
else:
types1 = set([type(statement1)])
if isinstance(statement2, PYSON):
types2 = statement2.types()
else:
types2 = set([type(statement2)])
assert types1 == types2, 'statements must have the same type'
self._statement1 = statement1
self._statement2 = statement2
def pyson(self):
return {
'__class__': 'Equal',
's1': self._statement1,
's2': self._statement2,
}
def types(self):
return set([bool])
@staticmethod
def eval(dct, context):
return dct['s1'] == dct['s2']
class Greater(PYSON):
def __init__(self, statement1, statement2, equal=False):
super(Greater, self).__init__()
for i in (statement1, statement2):
if isinstance(i, PYSON):
assert i.types().issubset(set([int, long, float])), \
'statement must be an integer or a float'
else:
assert isinstance(i, (int, long, float)), \
'statement must be an integer or a float'
if isinstance(equal, PYSON):
assert equal.types() == set([bool])
else:
assert isinstance(equal, bool)
self._statement1 = statement1
self._statement2 = statement2
self._equal = equal
def pyson(self):
return {
'__class__': 'Greater',
's1': self._statement1,
's2': self._statement2,
'e': self._equal,
}
def types(self):
return set([bool])
@staticmethod
def _convert(dct):
for i in ('s1', 's2'):
if not isinstance(dct[i], (int, long, float)):
dct = dct.copy()
dct[i] = float(dct[i])
return dct
@staticmethod
def eval(dct, context):
dct = Greater._convert(dct)
if dct['e']:
return dct['s1'] >= dct['s2']
else:
return dct['s1'] > dct['s2']
class Less(Greater):
def pyson(self):
res = super(Less, self).pyson()
res['__class__'] = 'Less'
return res
@staticmethod
def eval(dct, context):
dct = Less._convert(dct)
if dct['e']:
return dct['s1'] <= dct['s2']
else:
return dct['s1'] < dct['s2']
class If(PYSON):
def __init__(self, condition, then_statement, else_statement=None):
super(If, self).__init__()
if isinstance(condition, PYSON):
assert condition.types() == set([bool]), \
'condition must be boolean'
else:
assert isinstance(condition, bool), 'condition must be boolean'
if isinstance(then_statement, PYSON):
then_types = then_statement.types()
else:
then_types = set([type(then_statement)])
if isinstance(else_statement, PYSON):
assert then_types == else_statement.types(), \
'then and else statements must be the same type'
else:
assert then_types == set([type(else_statement)]), \
'then and else statements must be the same type'
self._condition = condition
self._then_statement = then_statement
self._else_statement = else_statement
def pyson(self):
return {
'__class__': 'If',
'c': self._condition,
't': self._then_statement,
'e': self._else_statement,
}
def types(self):
if isinstance(self._then_statement, PYSON):
return self._then_statement.types()
else:
return set([type(self._then_statement)])
@staticmethod
def eval(dct, context):
if dct['c']:
return dct['t']
else:
return dct['e']
class Get(PYSON):
def __init__(self, obj, key, default=''):
super(Get, self).__init__()
if isinstance(obj, PYSON):
assert obj.types() == set([dict]), 'obj must be a dict'
else:
assert isinstance(obj, dict), 'obj must be a dict'
self._obj = obj
if isinstance(key, PYSON):
assert key.types() == set([str]), 'key must be a string'
else:
assert type(key) == str, 'key must be a string'
self._key = key
self._default = default
def pyson(self):
return {
'__class__': 'Get',
'v': self._obj,
'k': self._key,
'd': self._default,
}
def types(self):
if isinstance(self._default, PYSON):
return self._default.types()
else:
return set([type(self._default)])
@staticmethod
def eval(dct, context):
return dct['v'].get(dct['k'], dct['d'])
class In(PYSON):
def __init__(self, key, obj):
super(In, self).__init__()
if isinstance(key, PYSON):
assert key.types().issubset(set([str, int, long])), \
'key must be a string or an integer or a long'
else:
assert type(key) in [str, int, long], \
'key must be a string or an integer or a long'
if isinstance(obj, PYSON):
assert obj.types().issubset(set([dict, list])), \
'obj must be a dict or a list'
if obj.types() == set([dict]):
assert type(key) == str, 'key must be a string'
else:
assert type(obj) in [dict, list]
if type(obj) == dict:
assert type(key) == str, 'key must be a string'
self._key = key
self._obj = obj
def pyson(self):
return {
'__class__': 'In',
'k': self._key,
'v': self._obj,
}
def types(self):
return set([bool])
@staticmethod
def eval(dct, context):
return dct['k'] in dct['v']
class Date(PYSON):
def __init__(self, year=None, month=None, day=None,
delta_years=0, delta_months=0, delta_days=0):
super(Date, self).__init__()
for i in (year, month, day, delta_years, delta_months, delta_days):
if isinstance(i, PYSON):
assert i.types().issubset(set([int, long, type(None)])), \
'%s must be an integer or None' % (i,)
else:
assert isinstance(i, (int, long, type(None))), \
'%s must be an integer or None' % (i,)
self._year = year
self._month = month
self._day = day
self._delta_years = delta_years
self._delta_months = delta_months
self._delta_days = delta_days
def pyson(self):
return {
'__class__': 'Date',
'y': self._year,
'M': self._month,
'd': self._day,
'dy': self._delta_years,
'dM': self._delta_months,
'dd': self._delta_days,
}
def types(self):
return set([datetime.date])
@staticmethod
def eval(dct, context):
return datetime.date.today() + relativedelta(
year=dct['y'],
month=dct['M'],
day=dct['d'],
years=dct['dy'],
months=dct['dM'],
days=dct['dd'],
)
class DateTime(Date):
def __init__(self, year=None, month=None, day=None,
hour=None, minute=None, second=None, microsecond=None,
delta_years=0, delta_months=0, delta_days=0,
delta_hours=0, delta_minutes=0, delta_seconds=0,
delta_microseconds=0):
super(DateTime, self).__init__(year=year, month=month, day=day,
delta_years=delta_years, delta_months=delta_months,
delta_days=delta_days)
for i in (hour, minute, second, microsecond,
delta_hours, delta_minutes, delta_seconds, delta_microseconds):
if isinstance(i, PYSON):
assert i.types() == set([int, long, type(None)]), \
'%s must be an integer or None' % (i,)
else:
assert isinstance(i, (int, long, type(None))), \
'%s must be an integer or None' % (i,)
self._hour = hour
self._minute = minute
self._second = second
self._microsecond = microsecond
self._delta_hours = delta_hours
self._delta_minutes = delta_minutes
self._delta_seconds = delta_seconds
self._delta_microseconds = delta_microseconds
def pyson(self):
res = super(DateTime, self).pyson()
res['__class__'] = 'DateTime'
res['h'] = self._hour
res['m'] = self._minute
res['s'] = self._second
res['ms'] = self._microsecond
res['dh'] = self._delta_hours
res['dm'] = self._delta_minutes
res['ds'] = self._delta_seconds
res['dms'] = self._delta_microseconds
return res
def types(self):
return set([datetime.datetime])
@staticmethod
def eval(dct, context):
return datetime.datetime.now() + relativedelta(
year=dct['y'],
month=dct['M'],
day=dct['d'],
hour=dct['h'],
minute=dct['m'],
second=dct['s'],
microsecond=dct['ms'],
years=dct['dy'],
months=dct['dM'],
days=dct['dd'],
hours=dct['dh'],
minutes=dct['dm'],
seconds=dct['ds'],
microseconds=dct['dms'],
)
class Len(PYSON):
def __init__(self, value):
super(Len, self).__init__()
if isinstance(value, PYSON):
assert value.types().issubset(set([dict, list, str])), \
'value must be a dict or a list or a string'
else:
assert type(value) in [dict, list, str], \
'value must be a dict or list or a string'
self._value = value
def pyson(self):
return {
'__class__': 'Len',
'v': self._value,
}
def types(self):
return set([int, long])
@staticmethod
def eval(dct, context):
return len(dct['v'])
class Id(PYSON):
"""The database id for filesystem id"""
def __init__(self, module, fs_id):
super(Id, self).__init__()
self._module = module
self._fs_id = fs_id
def pyson(self):
from trytond.pool import Pool
ModelData = Pool().get('ir.model.data')
return ModelData.get_id(self._module, self._fs_id)
def types(self):
return set([int])
CONTEXT = {
'Eval': Eval,
'Not': Not,
'Bool': Bool,
'And': And,
'Or': Or,
'Equal': Equal,
'Greater': Greater,
'Less': Less,
'If': If,
'Get': Get,
'In': In,
'Date': Date,
'DateTime': DateTime,
'Len': Len,
}
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