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📁 ..
📄 __init__.py(7.9 KB)
📄 __init__.pyc(9.31 KB)
📄 __init__.pyo(9.31 KB)
📄 attributes.py(55.94 KB)
📄 attributes.pyc(55.59 KB)
📄 attributes.pyo(55.32 KB)
📄 base.py(14.32 KB)
📄 base.pyc(15.11 KB)
📄 base.pyo(15.11 KB)
📄 collections.py(51.18 KB)
📄 collections.pyc(62.31 KB)
📄 collections.pyo(62.1 KB)
📄 dependency.py(45.11 KB)
📄 dependency.pyc(28.68 KB)
📄 dependency.pyo(28.59 KB)
📄 deprecated_interfaces.py(17.83 KB)
📄 deprecated_interfaces.pyc(21.11 KB)
📄 deprecated_interfaces.pyo(21.11 KB)
📄 descriptor_props.py(24.95 KB)
📄 descriptor_props.pyc(28.1 KB)
📄 descriptor_props.pyo(28.1 KB)
📄 dynamic.py(12.84 KB)
📄 dynamic.pyc(14.42 KB)
📄 dynamic.pyo(14.42 KB)
📄 evaluator.py(4.7 KB)
📄 evaluator.pyc(7.19 KB)
📄 evaluator.pyo(7.19 KB)
📄 events.py(83.09 KB)
📄 events.pyc(91.58 KB)
📄 events.pyo(91.58 KB)
📄 exc.py(5.31 KB)
📄 exc.pyc(7.75 KB)
📄 exc.pyo(7.75 KB)
📄 identity.py(10.01 KB)
📄 identity.pyc(14.76 KB)
📄 identity.pyo(14.76 KB)
📄 instrumentation.py(17.1 KB)
📄 instrumentation.pyc(20.65 KB)
📄 instrumentation.pyo(20.57 KB)
📄 interfaces.py(21.56 KB)
📄 interfaces.pyc(26.11 KB)
📄 interfaces.pyo(26.11 KB)
📄 loading.py(25.29 KB)
📄 loading.pyc(15.28 KB)
📄 loading.pyo(15.28 KB)
📄 mapper.py(116.54 KB)
📄 mapper.pyc(92.81 KB)
📄 mapper.pyo(92.66 KB)
📄 path_registry.py(7.57 KB)
📄 path_registry.pyc(12.58 KB)
📄 path_registry.pyo(12.58 KB)
📄 persistence.py(52.41 KB)
📄 persistence.pyc(41.25 KB)
📄 persistence.pyo(41.25 KB)
📄 properties.py(10.21 KB)
📄 properties.pyc(11.3 KB)
📄 properties.pyo(11.3 KB)
📄 query.py(150.98 KB)
📄 query.pyc(143.06 KB)
📄 query.pyo(143.02 KB)
📄 relationships.py(115.47 KB)
📄 relationships.pyc(100.36 KB)
📄 relationships.pyo(100.33 KB)
📄 scoping.py(6.27 KB)
📄 scoping.pyc(7.5 KB)
📄 scoping.pyo(7.5 KB)
📄 session.py(117.07 KB)
📄 session.pyc(110.77 KB)
📄 session.pyo(110.6 KB)
📄 state.py(26.85 KB)
📄 state.pyc(28.61 KB)
📄 state.pyo(28.61 KB)
📄 strategies.py(60.93 KB)
📄 strategies.pyc(45.88 KB)
📄 strategies.pyo(45.54 KB)
📄 strategy_options.py(35.07 KB)
📄 strategy_options.pyc(36.87 KB)
📄 strategy_options.pyo(36.87 KB)
📄 sync.py(5.32 KB)
📄 sync.pyc(4.48 KB)
📄 sync.pyo(4.48 KB)
📄 unitofwork.py(23.43 KB)
📄 unitofwork.pyc(23.57 KB)
📄 unitofwork.pyo(23.49 KB)
📄 util.py(37.64 KB)
📄 util.pyc(38.09 KB)
📄 util.pyo(37.94 KB)

Editing: evaluator.py

# orm/evaluator.py
# Copyright (C) 2005-2017 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php

import operator
from ..sql import operators

class UnevaluatableError(Exception):
    pass

_straight_ops = set(getattr(operators, op)
                    for op in ('add', 'mul', 'sub',
                               'div',
                               'mod', 'truediv',
                               'lt', 'le', 'ne', 'gt', 'ge', 'eq'))

_notimplemented_ops = set(getattr(operators, op)
                          for op in ('like_op', 'notlike_op', 'ilike_op',
                                     'notilike_op', 'between_op', 'in_op',
                                     'notin_op', 'endswith_op', 'concat_op'))

class EvaluatorCompiler(object):
    def __init__(self, target_cls=None):
        self.target_cls = target_cls

def process(self, clause):
        meth = getattr(self, "visit_%s" % clause.__visit_name__, None)
        if not meth:
            raise UnevaluatableError(
                "Cannot evaluate %s" % type(clause).__name__)
        return meth(clause)

def visit_grouping(self, clause):
        return self.process(clause.element)

def visit_null(self, clause):
        return lambda obj: None

def visit_false(self, clause):
        return lambda obj: False

def visit_true(self, clause):
        return lambda obj: True

def visit_column(self, clause):
        if 'parentmapper' in clause._annotations:
            parentmapper = clause._annotations['parentmapper']
            if self.target_cls and not issubclass(
                    self.target_cls, parentmapper.class_):
                raise UnevaluatableError(
                    "Can't evaluate criteria against alternate class %s" %
                    parentmapper.class_
                )
            key = parentmapper._columntoproperty[clause].key
        else:
            key = clause.key

get_corresponding_attr = operator.attrgetter(key)
        return lambda obj: get_corresponding_attr(obj)

def visit_clauselist(self, clause):
        evaluators = list(map(self.process, clause.clauses))
        if clause.operator is operators.or_:
            def evaluate(obj):
                has_null = False
                for sub_evaluate in evaluators:
                    value = sub_evaluate(obj)
                    if value:
                        return True
                    has_null = has_null or value is None
                if has_null:
                    return None
                return False
        elif clause.operator is operators.and_:
            def evaluate(obj):
                for sub_evaluate in evaluators:
                    value = sub_evaluate(obj)
                    if not value:
                        if value is None:
                            return None
                        return False
                return True
        else:
            raise UnevaluatableError(
                "Cannot evaluate clauselist with operator %s" %
                clause.operator)

return evaluate

def visit_binary(self, clause):
        eval_left, eval_right = list(map(self.process,
                                         [clause.left, clause.right]))
        operator = clause.operator
        if operator is operators.is_:
            def evaluate(obj):
                return eval_left(obj) == eval_right(obj)
        elif operator is operators.isnot:
            def evaluate(obj):
                return eval_left(obj) != eval_right(obj)
        elif operator in _straight_ops:
            def evaluate(obj):
                left_val = eval_left(obj)
                right_val = eval_right(obj)
                if left_val is None or right_val is None:
                    return None
                return operator(eval_left(obj), eval_right(obj))
        else:
            raise UnevaluatableError(
                "Cannot evaluate %s with operator %s" %
                (type(clause).__name__, clause.operator))
        return evaluate

def visit_unary(self, clause):
        eval_inner = self.process(clause.element)
        if clause.operator is operators.inv:
            def evaluate(obj):
                value = eval_inner(obj)
                if value is None:
                    return None
                return not value
            return evaluate
        raise UnevaluatableError(
            "Cannot evaluate %s with operator %s" %
            (type(clause).__name__, clause.operator))

def visit_bindparam(self, clause):
        if clause.callable:
            val = clause.callable()
        else:
            val = clause.value
        return lambda obj: val

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Editing: evaluator.py

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