# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Created on Jul 27, 2019
#
# @author: ballance
from vsc.model.constraint_model import ConstraintModel
[docs]class ConstraintScopeModel(ConstraintModel):
def __init__(self, constraints = None):
super().__init__()
if constraints is not None:
self.constraint_l = constraints
else:
self.constraint_l = []
[docs] def addConstraint(self, c) -> ConstraintModel:
self.constraint_l.append(c)
return c
[docs] def build(self, btor, soft=False):
ret = None
for c in self.constraint_l:
if ret is None:
ret = c.build(btor, soft)
else:
b = c.build(btor, soft)
if b is not None:
ret = btor.And(ret, b)
if ret is None:
# An empty block defaults to 'true'
ret = btor.Const(1, 1)
return ret
[docs] def get_nodes(self, node_l):
for c in self.constraint_l:
c.get_nodes(node_l)
[docs] def accept(self, visitor):
visitor.visit_constraint_scope(self)
[docs] def clone(self, deep=False)->'ConstraintModel':
ret = ConstraintScopeModel()
if deep:
for c in self.constraint_l:
ret.constraint_l.append(c.clone(deep))
return ret