# 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 28, 2019
#
#@author: ballance
from vsc.model.constraint_scope_model import ConstraintScopeModel
from vsc.model.expr_model import ExprModel
[docs]class ConstraintImpliesModel(ConstraintScopeModel):
def __init__(self, cond, constraints=None):
super().__init__(constraints)
self.cond = cond
[docs] def build(self, btor, soft=False):
cond = ExprModel.toBool(btor, self.cond.build(btor))
body = super().build(btor, soft)
return btor.Implies(cond, body)
[docs] def get_nodes(self, node_l):
node_l.append(self.node)
[docs] def accept(self, visitor):
visitor.visit_constraint_implies(self)
[docs] def clone(self, deep=False)->'ConstraintModel':
ret = ConstraintImpliesModel(self.cond)
if deep:
for c in self.constraint_l:
ret.constraint_l.append(c.clone(deep))
return ret