def main(self, ctl: Control, files: Sequence[str]):
'''
Register the difference constraint propagator, and then ground and
solve.
'''
ctl.register_propagator(self._propagator)
ctl.add("base", [], THEORY)
if not files:
files = ["-"]
self._rewrite(ctl, files)
ctl.ground([("base", [])])
if self._minimize is None:
ctl.solve(on_model=self._propagator.on_model)
else:
ctl.add("bound", ["b", "v"], "&diff(head) { v-0 } <= b.")
while cast(SolveResult,
ctl.solve(on_model=self._on_model)).satisfiable:
print("Found new bound: {}".format(self._bound))
if self._bound is None:
break
ctl.ground([
("bound",
[Number(cast(int, self._bound) - 1), self._minimize])
])
if self._bound is not None:
print("Optimum found")
def main(self, ctl: Control, files: Sequence[str]):
"""
The main function called with a Control object and a list of files
passed on the command line.
"""
if not files:
files = ["-"]
check: List[ast.AST] = []
with ProgramBuilder(ctl) as bld:
trans = Transformer(bld, check)
parse_files(files, trans.add)
ctl.register_propagator(CheckPropagator(check))
ctl.ground([("base", [])])
ctl.solve()