def synthesize(spec, symbolic=False):
"""Return strategy satisfying the specification C{spec}.
@type spec: L{GRSpec} or C{str} in structured slugs syntax.
@return: If realizable return synthesized strategy, otherwise C{None}.
@rtype: C{networkx.DiGraph}
"""
if isinstance(spec, GRSpec):
struct = translate(spec, 'slugs')
else:
struct = spec
import slugs
s = slugs.convert_to_slugsin(struct, True)
with tempfile.NamedTemporaryFile(delete=False) as fin:
fin.write(s)
logger.info('\n\n structured slugs:\n\n {struct}'.format(
struct=struct) + '\n\n slugs in:\n\n {s}\n'.format(s=s))
realizable, out = _call_slugs(fin.name, synth=True, symbolic=symbolic)
if not realizable:
return None
os.unlink(fin.name)
# collect int vars
vrs = dict(spec.sys_vars)
vrs.update(spec.env_vars)
dout = json.loads(out)
g = nx.DiGraph()
dvars = dout['variables']
for stru, d in dout['nodes'].iteritems():
u = int(stru)
state = dict(zip(dvars, d['state']))
g.add_node(u, state=state)
for v in d['trans']:
g.add_edge(u, v)
h = nx.DiGraph()
for u, d in g.nodes_iter(data=True):
bit_state = d['state']
int_state = _bitfields_to_ints(bit_state, vrs)
h.add_node(u, state=int_state)
for u, v in g.edges_iter():
h.add_edge(u, v)
logger.debug(
('loaded strategy with vertices:\n {v}\n'
'and edges:\n {e}\n').format(
v='\n '.join(str(x) for x in h.nodes(data=True)),
e=h.edges()))
return h
def synthesize(spec, symbolic=False):
"""Return strategy satisfying the specification C{spec}.
@type spec: L{GRSpec} or C{str} in structured slugs syntax.
@return: If realizable return synthesized strategy, otherwise C{None}.
@rtype: C{networkx.DiGraph}
"""
if isinstance(spec, GRSpec):
struct = translate(spec, 'slugs')
else:
struct = spec
import slugs
s = slugs.convert_to_slugsin(struct, True)
with tempfile.NamedTemporaryFile(delete=False) as fin:
fin.write(s)
logger.info('\n\n structured slugs:\n\n {struct}'.format(struct=struct) +
'\n\n slugs in:\n\n {s}\n'.format(s=s))
realizable, out = _call_slugs(fin.name, synth=True, symbolic=symbolic)
if not realizable:
return None
os.unlink(fin.name)
# collect int vars
vrs = dict(spec.sys_vars)
vrs.update(spec.env_vars)
dout = json.loads(out)
g = nx.DiGraph()
dvars = dout['variables']
for stru, d in dout['nodes'].iteritems():
u = int(stru)
state = dict(zip(dvars, d['state']))
g.add_node(u, state=state)
for v in d['trans']:
g.add_edge(u, v)
h = nx.DiGraph()
for u, d in g.nodes_iter(data=True):
bit_state = d['state']
int_state = _bitfields_to_ints(bit_state, vrs)
h.add_node(u, state=int_state)
for u, v in g.edges_iter():
h.add_edge(u, v)
logger.debug(('loaded strategy with vertices:\n {v}\n'
'and edges:\n {e}\n').format(v='\n '.join(
str(x) for x in h.nodes(data=True)),
e=h.edges()))
return h
def check_realizable(spec):
"""Decide realizability of specification.
Consult the documentation of L{synthesize} about parameters.
@return: True if realizable, False if not, or an error occurs.
"""
if isinstance(spec, GRSpec):
struct = translate(spec, 'slugs')
else:
struct = spec
s = slugs.convert_to_slugsin(struct, True)
with tempfile.NamedTemporaryFile(delete=False) as fin:
fin.write(s)
logger.info('\n\n structured slugs:\n\n {struct}'.format(
struct=struct) + '\n\n slugs in:\n\n {s}\n'.format(s=s))
realizable, out = _call_slugs(fin.name, synth=False)
return realizable
def check_realizable(spec):
"""Decide realizability of specification.
Consult the documentation of L{synthesize} about parameters.
@return: True if realizable, False if not, or an error occurs.
"""
if isinstance(spec, GRSpec):
struct = translate(spec, 'slugs')
else:
struct = spec
s = slugs.convert_to_slugsin(struct, True)
with tempfile.NamedTemporaryFile(delete=False) as fin:
fin.write(s)
logger.info('\n\n structured slugs:\n\n {struct}'.format(struct=struct) +
'\n\n slugs in:\n\n {s}\n'.format(s=s))
realizable, out = _call_slugs(fin.name, synth=False)
return realizable
