def __init__(self, time, init_fact): self.time = time self.fact = init_fact # nested list if self.fact[0] == 'not': self.type = 'NEGATED_BOOLEAN' self.value = False self.predicate = tuple(self.fact[1]) self.atom = conditions.Atom(self.fact[1][0], [conditions.parse_term(term) for term in self.fact[1][1:]]) elif self.fact[0] == '=': if f_expression.isFloat(self.fact[2]): self.type = 'NUMERICAL_FUNCTION' self.value = float(self.fact[2]) self.predicate = tuple(self.fact[1]) self.atom = f_expression.parse_assignment(fact) else: self.type = 'OBJECT_FUNCTION' self.value = self.fact[2] self.predicate = tuple(self.fact[1]) function = conditions.parse_term(self.fact[1]) terms = function.args terms.append(conditions.parse_term(self.fact[2])) atomname = conditions.function_predicate_name(function.name) self.atom = conditions.Atom(atomname, terms) else: self.type = 'BOOLEAN' self.value = True self.atom = conditions.Atom(self.fact[0], [conditions.parse_term(term) for term in self.fact[1:]]) self.predicate = tuple(self.fact)
def parse(domain_pddl, task_pddl):
domain_name, requirements, constants, predicates, types, functions, actions, durative_actions, axioms \
= parse_domain(domain_pddl)
task_name, task_domain_name, objects, init, goal = parse_task(task_pddl)
assert domain_name == task_domain_name
objects = constants + objects
init += [conditions.Atom("=", (conditions.parse_term(obj.name), conditions.parse_term(obj.name)))
for obj in objects]
return Task(domain_name, task_name, requirements, types, objects,
predicates, init, goal, actions, durative_actions, axioms, Task.FUNCTION_SYMBOLS)
def parse(domain_pddl, task_pddl):
domain_name, requirements, constants, predicates, types, functions, actions, durative_actions, axioms \
= parse_domain(domain_pddl)
task_name, task_domain_name, objects, init, goal, metric = parse_task(task_pddl)
assert domain_name == task_domain_name
objects = constants + objects
init += [conditions.Atom("=", (conditions.parse_term(obj.name), conditions.parse_term(obj.name)))
for obj in objects]
return Task(domain_name, task_name, requirements, types, objects,
predicates, init, goal, metric, actions, durative_actions, axioms, Task.FUNCTION_SYMBOLS)
def parse_task(task_pddl):
iterator = iter(task_pddl)
assert iterator.next() == "define"
problem_line = iterator.next()
assert problem_line[0] == "problem" and len(problem_line) == 2
yield problem_line[1]
domain_line = iterator.next()
assert domain_line[0] == ":domain" and len(domain_line) == 2
yield domain_line[1]
objects_opt = iterator.next()
if objects_opt[0] == ":objects":
yield pddl_types.parse_typed_list(objects_opt[1:])
init = iterator.next()
else:
yield []
init = objects_opt
assert init[0] == ":init"
initial = []
for fact in init[1:]:
if fact[0] == "=":
if conditions.is_function_comparison(fact): # numeric function
initial.append(f_expression.parse_assignment(fact))
else: # object function
function = conditions.parse_term(fact[1])
terms = function.args
terms.append(conditions.parse_term(fact[2]))
atomname = conditions.function_predicate_name(function.name)
initial.append(conditions.Atom(atomname, terms))
else:
initial.append(
conditions.Atom(
fact[0],
[conditions.parse_term(term) for term in fact[1:]]))
yield initial
goal = iterator.next()
assert goal[0] == ":goal" and len(goal) == 2
yield conditions.parse_condition(goal[1])
metric_defined = False
for entry in iterator:
if entry[0] == ":metric":
metric_defined = True
# if entry[2][0] in ["total-time", "total-cost"] :
metric = (entry[1], entry[2])
yield metric
if not metric_defined:
metric = ()
yield metric
def parse_init_fact(fact):
if fact[0] == "=":
if conditions.is_function_comparison(fact): # numeric function
return f_expression.parse_assignment(fact)
else: # object function
function = conditions.parse_term(fact[1])
terms = function.args
terms.append(conditions.parse_term(fact[2]))
atomname = conditions.function_predicate_name(function.name)
return conditions.Atom(atomname, terms)
else:
return conditions.Atom(fact[0], [conditions.parse_term(term) for term in fact[1:]])
def parse(domain_pddl, task_pddl):
domain_name, requirements, oplinit, constants, predicates, types, functions, actions, durative_actions, axioms, modules, subplan_generators \
= parse_domain(domain_pddl)
task_name, task_domain_name, module_inits, module_exits, objects, init, timed_init, goal = parse_task(task_pddl)
assert domain_name == task_domain_name
objects = constants + objects
if timed_init:
timed_initials.compile_away(predicates, durative_actions, init, goal, timed_init)
init += [conditions.Atom("=", (conditions.parse_term(obj.name), conditions.parse_term(obj.name)))
for obj in objects]
return Task(domain_name, task_name, requirements, oplinit, types, objects, modules,
predicates, init, goal, actions, durative_actions, axioms, Task.FUNCTION_SYMBOLS, subplan_generators, module_inits, module_exits)
def parse_expression(exp, durative=False):
if isinstance(exp, list):
alist = exp
operator_or_functionsymbol = alist[0]
if operator_or_functionsymbol in ("+","/","*","-"):
args = [parse_expression(arg,durative) for arg in alist[1:]]
operator = operator_or_functionsymbol
elif operator_or_functionsymbol == "?duration":
return DurationVariable()
else:
return PrimitiveNumericExpression(operator_or_functionsymbol,
[conditions.parse_term(arg) for arg in alist[1:]])
if operator == "+":
return Sum(args)
elif operator == "/":
assert len(args) == 2
return Quotient(args)
elif operator == "*":
return Product(args)
else:
if len(args) == 1:
return AdditiveInverse(args)
else:
assert len(args) == 2
return Difference(args)
elif isFloat(exp):
return NumericConstant(string.atof(exp))
elif exp == "?duration":
return DurationVariable()
else:
return PrimitiveNumericExpression(exp,[])
def parse_expression(exp, durative=False):
if isinstance(exp, list):
alist = exp
operator_or_functionsymbol = alist[0]
if operator_or_functionsymbol in ("+","/","*","-"):
args = [parse_expression(arg,durative) for arg in alist[1:]]
operator = operator_or_functionsymbol
elif operator_or_functionsymbol == "?duration":
return DurationVariable()
else:
return PrimitiveNumericExpression(operator_or_functionsymbol,
[conditions.parse_term(arg) for arg in alist[1:]])
if operator == "+":
return Sum(args)
elif operator == "/":
assert len(args) == 2
return Quotient(args)
elif operator == "*":
return Product(args)
else:
if len(args) == 1:
return AdditiveInverse(args)
else:
assert len(args) == 2
return Difference(args)
elif isFloat(exp):
return NumericConstant(string.atof(exp))
elif exp == "?duration":
return DurationVariable()
else:
return PrimitiveNumericExpression(exp,[])
def parse(domain_pddl, task_pddl):
domain_name, requirements, oplinit, constants, predicates, types, functions, actions, durative_actions, axioms, modules, subplan_generators \
= parse_domain(domain_pddl)
task_name, task_domain_name, module_inits, module_exits, objects, init, goal = parse_task(
task_pddl)
assert domain_name == task_domain_name
objects = constants + objects
init += [
conditions.Atom("=", (conditions.parse_term(
obj.name), conditions.parse_term(obj.name))) for obj in objects
]
return Task(domain_name, task_name, requirements, oplinit, types,
objects, modules, predicates, init, goal, actions,
durative_actions, axioms, Task.FUNCTION_SYMBOLS,
subplan_generators, module_inits, module_exits)
def parse_cond_effect(alist, durative=False):
tag = alist[0]
if tag == "and":
return ConjunctiveEffect([parse_cond_effect(eff, durative) for eff in alist[1:]])
elif tag in ("scale-up", "scale-down", "increase", "decrease"):
return ConjunctiveEffect([f_expression.parse_assignment(alist, durative)])
elif tag == "assign":
symbol = alist[1]
if isinstance(symbol, list):
symbol = symbol[0]
if tasks.Task.FUNCTION_SYMBOLS.get(symbol, "object") == "number":
return ConjunctiveEffect([f_expression.parse_assignment(alist, durative)])
else:
return ConjunctiveEffect(
[ObjectFunctionAssignment(conditions.parse_term(alist[1]), conditions.parse_term(alist[2]))])
else:
return ConjunctiveEffect([conditions.parse_condition(alist)])
def parse_expression(exp):
if isinstance(exp, list):
functionsymbol = exp[0]
return PrimitiveNumericExpression(functionsymbol,
[conditions.parse_term(arg) for arg in exp[1:]])
elif exp.replace(".","").isdigit():
return NumericConstant(string.atof(exp))
else:
return PrimitiveNumericExpression(exp,[])
def parse_expression(exp):
if isinstance(exp, list):
functionsymbol = exp[0]
return PrimitiveNumericExpression(functionsymbol,
[conditions.parse_term(arg) for arg in exp[1:]])
elif exp.replace(".","").isdigit():
return NumericConstant(string.atof(exp))
else:
return PrimitiveNumericExpression(exp,[])
def parse_task(task_pddl):
iterator = iter(task_pddl)
assert iterator.next() == "define"
problem_line = iterator.next()
assert problem_line[0] == "problem" and len(problem_line) == 2
yield problem_line[1]
domain_line = iterator.next()
assert domain_line[0] == ":domain" and len(domain_line) == 2
yield domain_line[1]
objects_opt = iterator.next()
if objects_opt[0] == ":objects":
yield pddl_types.parse_typed_list(objects_opt[1:])
init = iterator.next()
else:
yield []
init = objects_opt
assert init[0] == ":init"
initial = []
for fact in init[1:]:
if fact[0] == "=":
if conditions.is_function_comparison(fact): # numeric function
initial.append(f_expression.parse_assignment(fact))
else: # object function
function = conditions.parse_term(fact[1])
terms = function.args
terms.append(conditions.parse_term(fact[2]))
atomname = conditions.function_predicate_name(function.name)
initial.append(conditions.Atom(atomname, terms))
else:
initial.append(conditions.Atom(fact[0], [conditions.parse_term(term) for term in fact[1:]]))
yield initial
goal = iterator.next()
assert goal[0] == ":goal" and len(goal) == 2
yield conditions.parse_condition(goal[1])
for entry in iterator:
if entry[0] == ":metric" and entry[1]=="minimize":
if entry[2][0] in ["total-time", "total-cost"] :
continue
assert False, entry
def parse_expression(exp):
if isinstance(exp, list):
functionsymbol = exp[0]
return PrimitiveNumericExpression(
functionsymbol, [conditions.parse_term(arg) for arg in exp[1:]])
elif exp.replace(".", "").isdigit():
return NumericConstant(string.atof(exp))
elif exp[0] == "-":
raise ValueError("Negative numbers are not supported")
else:
return PrimitiveNumericExpression(exp, [])
def parse_expression(exp):
if isinstance(exp, list):
functionsymbol = exp[0]
return PrimitiveNumericExpression(functionsymbol,
[conditions.parse_term(arg) for arg in exp[1:]])
elif exp.replace(".","").isdigit():
return NumericConstant(string.atof(exp))
elif exp[0] == "-":
raise ValueError("Negative numbers are not supported")
else:
return PrimitiveNumericExpression(exp,[])
def parse_cond_effect(alist, durative=False):
tag = alist[0]
if tag == "and":
return ConjunctiveEffect([parse_cond_effect(eff,durative) for eff in alist[1:]])
elif tag in ("scale-up", "scale-down", "increase", "decrease"):
return ConjunctiveEffect([f_expression.parse_assignment(alist,durative)])
elif tag == "assign":
symbol = alist[1]
if isinstance(symbol,list):
symbol = symbol[0]
if tasks.Task.FUNCTION_SYMBOLS.get(symbol,"object")=="number":
return ConjunctiveEffect([f_expression.parse_assignment(alist,durative)])
else:
return ConjunctiveEffect([ObjectFunctionAssignment(conditions.parse_term(alist[1]),conditions.parse_term(alist[2]))])
else:
return ConjunctiveEffect([conditions.parse_condition(alist)])
def parse_task(task_pddl):
iterator = iter(task_pddl)
assert iterator.next() == "define"
problem_line = iterator.next()
assert problem_line[0] == "problem" and len(problem_line) == 2
yield problem_line[1]
domain_line = iterator.next()
assert domain_line[0] == ":domain" and len(domain_line) == 2
yield domain_line[1]
module_opt = iterator.next()
if module_opt[0] == ":moduleoptions":
yield [modules.ModuleInit.parse(mi) for mi in module_opt[1:]]
module_exit_opt = iterator.next()
else:
yield []
module_exit_opt = module_opt
if module_exit_opt[0] == ":moduleexitoptions":
yield [modules.ModuleExit.parse(mi) for mi in module_exit_opt[1:]]
objects_opt = iterator.next()
else:
yield []
objects_opt = module_exit_opt
if objects_opt[0] == ":objects":
yield pddl_types.parse_typed_list(objects_opt[1:])
init = iterator.next()
else:
yield []
init = objects_opt
assert init[0] == ":init"
initial = []
for fact in init[1:]:
if fact[0] == "=":
if conditions.is_function_comparison(fact): # numeric function
initial.append(f_expression.parse_assignment(fact))
else: # object function
function = conditions.parse_term(fact[1])
terms = function.args
terms.append(conditions.parse_term(fact[2]))
atomname = conditions.function_predicate_name(function.name)
initial.append(conditions.Atom(atomname, terms))
else:
initial.append(
conditions.Atom(
fact[0],
[conditions.parse_term(term) for term in fact[1:]]))
yield initial
goal = iterator.next()
assert goal[0] == ":goal" and len(goal) == 2
yield conditions.parse_condition(goal[1])
for entry in iterator:
if entry[0] == ":metric" and entry[1] == "minimize":
if entry[2][0] in ["total-time", "total-cost"]:
continue
assert False, "Can only minimize total-time or total-cost, got: " + str(
entry)
