Source code for vsc.model.constraint_model

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# Created on Jul 27, 2019
#
# @author: ballance

from pyboolector import BoolectorNode

[docs] class ConstraintModel(object): """Base class for all constraint models""" def __init__(self): self.node = None self.srcinfo = None pass
[docs] def dispose(self): self.node = None
[docs] def build(self, btor, soft=False)->BoolectorNode: raise Exception("build unimplemented for constraint " + str(type(self)))
[docs] def get_nodes(self, node_l): raise Exception("get_node unimplemented")
[docs] @staticmethod def and_nodelist(node_l, btor): """Creates a boolean AND across a list of expression nodes""" ret = None ret_valid = False for n in node_l: if ret_valid: ret = btor.And(ret, n) else: ret = n ret_valid = True return ret
[docs] def accept(self, visitor): raise NotImplementedError("" + str(self) + "::accept unimplemented")
[docs] def clone(self, deep=False)->'ConstraintModel': raise NotImplementedError("clone not implemented by " + str(type(self)))