Z3
Public Member Functions | Data Fields
FuncEntry Class Reference

Public Member Functions

def __init__ (self, entry, ctx)
 
def __deepcopy__ (self, memo={})
 
def __del__ (self)
 
def num_args (self)
 
def arg_value (self, idx)
 
def value (self)
 
def as_list (self)
 
def __repr__ (self)
 

Data Fields

 entry
 
 ctx
 

Detailed Description

Store the value of the interpretation of a function in a particular point.

Definition at line 5663 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  entry,
  ctx 
)

Definition at line 5666 of file z3py.py.

5666  def __init__(self, entry, ctx):
5667  self.entry = entry
5668  self.ctx = ctx
5669  Z3_func_entry_inc_ref(self.ctx.ref(), self.entry)
5670 
void Z3_API Z3_func_entry_inc_ref(Z3_context c, Z3_func_entry e)
Increment the reference counter of the given Z3_func_entry object.

◆ __del__()

def __del__ (   self)

Definition at line 5674 of file z3py.py.

5674  def __del__(self):
5675  if self.ctx.ref() is not None:
5676  Z3_func_entry_dec_ref(self.ctx.ref(), self.entry)
5677 
void Z3_API Z3_func_entry_dec_ref(Z3_context c, Z3_func_entry e)
Decrement the reference counter of the given Z3_func_entry object.

Member Function Documentation

◆ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 5671 of file z3py.py.

5671  def __deepcopy__(self, memo={}):
5672  return FuncEntry(self.entry, self.ctx)
5673 

◆ __repr__()

def __repr__ (   self)

Definition at line 5768 of file z3py.py.

5768  def __repr__(self):
5769  return repr(self.as_list())
5770 

◆ arg_value()

def arg_value (   self,
  idx 
)
Return the value of argument `idx`.

>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e
[1, 2, 20]
>>> e.num_args()
2
>>> e.arg_value(0)
1
>>> e.arg_value(1)
2
>>> try:
...   e.arg_value(2)
... except IndexError:
...   print("index error")
index error

Definition at line 5696 of file z3py.py.

5696  def arg_value(self, idx):
5697  """Return the value of argument `idx`.
5698 
5699  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5700  >>> s = Solver()
5701  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5702  >>> s.check()
5703  sat
5704  >>> m = s.model()
5705  >>> f_i = m[f]
5706  >>> f_i.num_entries()
5707  1
5708  >>> e = f_i.entry(0)
5709  >>> e
5710  [1, 2, 20]
5711  >>> e.num_args()
5712  2
5713  >>> e.arg_value(0)
5714  1
5715  >>> e.arg_value(1)
5716  2
5717  >>> try:
5718  ... e.arg_value(2)
5719  ... except IndexError:
5720  ... print("index error")
5721  index error
5722  """
5723  if idx >= self.num_args():
5724  raise IndexError
5725  return _to_expr_ref(Z3_func_entry_get_arg(self.ctx.ref(), self.entry, idx), self.ctx)
5726 
Z3_ast Z3_API Z3_func_entry_get_arg(Z3_context c, Z3_func_entry e, unsigned i)
Return an argument of a Z3_func_entry object.

◆ as_list()

def as_list (   self)
Return entry `self` as a Python list.
>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e.as_list()
[1, 2, 20]

Definition at line 5749 of file z3py.py.

5749  def as_list(self):
5750  """Return entry `self` as a Python list.
5751  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5752  >>> s = Solver()
5753  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5754  >>> s.check()
5755  sat
5756  >>> m = s.model()
5757  >>> f_i = m[f]
5758  >>> f_i.num_entries()
5759  1
5760  >>> e = f_i.entry(0)
5761  >>> e.as_list()
5762  [1, 2, 20]
5763  """
5764  args = [ self.arg_value(i) for i in range(self.num_args())]
5765  args.append(self.value())
5766  return args
5767 
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:3244

◆ num_args()

def num_args (   self)
Return the number of arguments in the given entry.

>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e.num_args()
2

Definition at line 5678 of file z3py.py.

Referenced by AstRef.__bool__().

5678  def num_args(self):
5679  """Return the number of arguments in the given entry.
5680 
5681  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5682  >>> s = Solver()
5683  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5684  >>> s.check()
5685  sat
5686  >>> m = s.model()
5687  >>> f_i = m[f]
5688  >>> f_i.num_entries()
5689  1
5690  >>> e = f_i.entry(0)
5691  >>> e.num_args()
5692  2
5693  """
5694  return int(Z3_func_entry_get_num_args(self.ctx.ref(), self.entry))
5695 
unsigned Z3_API Z3_func_entry_get_num_args(Z3_context c, Z3_func_entry e)
Return the number of arguments in a Z3_func_entry object.

◆ value()

def value (   self)
Return the value of the function at point `self`.

>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e
[1, 2, 20]
>>> e.num_args()
2
>>> e.value()
20

Definition at line 5727 of file z3py.py.

5727  def value(self):
5728  """Return the value of the function at point `self`.
5729 
5730  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5731  >>> s = Solver()
5732  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5733  >>> s.check()
5734  sat
5735  >>> m = s.model()
5736  >>> f_i = m[f]
5737  >>> f_i.num_entries()
5738  1
5739  >>> e = f_i.entry(0)
5740  >>> e
5741  [1, 2, 20]
5742  >>> e.num_args()
5743  2
5744  >>> e.value()
5745  20
5746  """
5747  return _to_expr_ref(Z3_func_entry_get_value(self.ctx.ref(), self.entry), self.ctx)
5748 
Z3_ast Z3_API Z3_func_entry_get_value(Z3_context c, Z3_func_entry e)
Return the value of this point.

Field Documentation

◆ ctx

ctx

Definition at line 5668 of file z3py.py.

Referenced by Probe.__call__(), Fixedpoint.__deepcopy__(), Optimize.__deepcopy__(), ApplyResult.__deepcopy__(), Tactic.__deepcopy__(), Probe.__deepcopy__(), Fixedpoint.__del__(), Optimize.__del__(), ApplyResult.__del__(), Tactic.__del__(), Probe.__del__(), Probe.__eq__(), Probe.__ge__(), ApplyResult.__getitem__(), Probe.__gt__(), Probe.__le__(), ApplyResult.__len__(), Probe.__lt__(), Probe.__ne__(), Fixedpoint.add_cover(), Fixedpoint.add_rule(), Optimize.add_soft(), Tactic.apply(), ApplyResult.as_expr(), Fixedpoint.assert_exprs(), Optimize.assert_exprs(), Optimize.assertions(), Optimize.check(), Optimize.from_file(), Optimize.from_string(), Fixedpoint.get_answer(), Fixedpoint.get_assertions(), Fixedpoint.get_cover_delta(), Fixedpoint.get_ground_sat_answer(), Fixedpoint.get_num_levels(), Fixedpoint.get_rule_names_along_trace(), Fixedpoint.get_rules(), Fixedpoint.get_rules_along_trace(), Fixedpoint.help(), Optimize.help(), Tactic.help(), Optimize.maximize(), Optimize.minimize(), Optimize.model(), Optimize.objectives(), Fixedpoint.param_descrs(), Optimize.param_descrs(), Tactic.param_descrs(), Fixedpoint.parse_file(), Fixedpoint.parse_string(), Fixedpoint.pop(), Optimize.pop(), Fixedpoint.push(), Optimize.push(), Fixedpoint.query(), Fixedpoint.query_from_lvl(), Fixedpoint.reason_unknown(), Optimize.reason_unknown(), Fixedpoint.register_relation(), Fixedpoint.set(), Optimize.set(), Fixedpoint.set_predicate_representation(), Fixedpoint.sexpr(), Optimize.sexpr(), ApplyResult.sexpr(), Tactic.solver(), Fixedpoint.statistics(), Optimize.statistics(), Solver.to_smt2(), Fixedpoint.to_string(), Optimize.unsat_core(), and Fixedpoint.update_rule().

◆ entry

entry

Definition at line 5667 of file z3py.py.