Z3
Public Member Functions | Data Fields
ParamsRef Class Reference

Parameter Sets. More...

Public Member Functions

def __init__ (self, ctx=None, params=None)
 
def __deepcopy__ (self, memo={})
 
def __del__ (self)
 
def set (self, name, val)
 
def __repr__ (self)
 
def validate (self, ds)
 

Data Fields

 ctx
 
 params
 

Detailed Description

Parameter Sets.

Set of parameters used to configure Solvers, Tactics and Simplifiers in Z3.

Consider using the function `args2params` to create instances of this object.

Definition at line 4700 of file z3py.py.

Constructor & Destructor Documentation

§ __init__()

def __init__ (   self,
  ctx = None,
  params = None 
)

Definition at line 4705 of file z3py.py.

4705  def __init__(self, ctx=None, params=None):
4706  self.ctx = _get_ctx(ctx)
4707  if params is None:
4708  self.params = Z3_mk_params(self.ctx.ref())
4709  else:
4710  self.params = params
4711  Z3_params_inc_ref(self.ctx.ref(), self.params)
4712 
Z3_params Z3_API Z3_mk_params(Z3_context c)
Create a Z3 (empty) parameter set. Starting at Z3 4.0, parameter sets are used to configure many comp...
void Z3_API Z3_params_inc_ref(Z3_context c, Z3_params p)
Increment the reference counter of the given parameter set.

§ __del__()

def __del__ (   self)

Definition at line 4716 of file z3py.py.

4716  def __del__(self):
4717  if self.ctx.ref() is not None:
4718  Z3_params_dec_ref(self.ctx.ref(), self.params)
4719 
void Z3_API Z3_params_dec_ref(Z3_context c, Z3_params p)
Decrement the reference counter of the given parameter set.

Member Function Documentation

§ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 4713 of file z3py.py.

4713  def __deepcopy__(self, memo={}):
4714  return ParamsRef(self.ctx, self.params)
4715 

§ __repr__()

def __repr__ (   self)

Definition at line 4737 of file z3py.py.

4737  def __repr__(self):
4738  return Z3_params_to_string(self.ctx.ref(), self.params)
4739 
Z3_string Z3_API Z3_params_to_string(Z3_context c, Z3_params p)
Convert a parameter set into a string. This function is mainly used for printing the contents of a pa...

§ set()

def set (   self,
  name,
  val 
)
Set parameter name with value val.

Definition at line 4720 of file z3py.py.

4720  def set(self, name, val):
4721  """Set parameter name with value val."""
4722  if __debug__:
4723  _z3_assert(isinstance(name, str), "parameter name must be a string")
4724  name_sym = to_symbol(name, self.ctx)
4725  if isinstance(val, bool):
4726  Z3_params_set_bool(self.ctx.ref(), self.params, name_sym, val)
4727  elif _is_int(val):
4728  Z3_params_set_uint(self.ctx.ref(), self.params, name_sym, val)
4729  elif isinstance(val, float):
4730  Z3_params_set_double(self.ctx.ref(), self.params, name_sym, val)
4731  elif isinstance(val, str):
4732  Z3_params_set_symbol(self.ctx.ref(), self.params, name_sym, to_symbol(val, self.ctx))
4733  else:
4734  if __debug__:
4735  _z3_assert(False, "invalid parameter value")
4736 
void Z3_API Z3_params_set_uint(Z3_context c, Z3_params p, Z3_symbol k, unsigned v)
Add a unsigned parameter k with value v to the parameter set p.
def to_symbol(s, ctx=None)
Definition: z3py.py:101
void Z3_API Z3_params_set_double(Z3_context c, Z3_params p, Z3_symbol k, double v)
Add a double parameter k with value v to the parameter set p.
void Z3_API Z3_params_set_symbol(Z3_context c, Z3_params p, Z3_symbol k, Z3_symbol v)
Add a symbol parameter k with value v to the parameter set p.
void Z3_API Z3_params_set_bool(Z3_context c, Z3_params p, Z3_symbol k, Z3_bool v)
Add a Boolean parameter k with value v to the parameter set p.

§ validate()

def validate (   self,
  ds 
)

Definition at line 4740 of file z3py.py.

4740  def validate(self, ds):
4741  _z3_assert(isinstance(ds, ParamDescrsRef), "parameter description set expected")
4742  Z3_params_validate(self.ctx.ref(), self.params, ds.descr)
4743 
void Z3_API Z3_params_validate(Z3_context c, Z3_params p, Z3_param_descrs d)
Validate the parameter set p against the parameter description set d.

Field Documentation

§ ctx

ctx

Definition at line 4706 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(), ApplyResult.convert_model(), 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(), and Fixedpoint.update_rule().

§ params

params

Definition at line 4708 of file z3py.py.