Z3
Public Member Functions | Data Fields
ParamsRef Class Reference

Parameter Sets. More...

Public Member Functions

def __init__ (self, ctx=None)
 
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 4606 of file z3py.py.

Constructor & Destructor Documentation

§ __init__()

def __init__ (   self,
  ctx = None 
)

Definition at line 4611 of file z3py.py.

4611  def __init__(self, ctx=None):
4612  self.ctx = _get_ctx(ctx)
4613  self.params = Z3_mk_params(self.ctx.ref())
4614  Z3_params_inc_ref(self.ctx.ref(), self.params)
4615 
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 4616 of file z3py.py.

4616  def __del__(self):
4617  if self.ctx.ref() is not None:
4618  Z3_params_dec_ref(self.ctx.ref(), self.params)
4619 
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

§ __repr__()

def __repr__ (   self)

Definition at line 4637 of file z3py.py.

4637  def __repr__(self):
4638  return Z3_params_to_string(self.ctx.ref(), self.params)
4639 
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 4620 of file z3py.py.

4620  def set(self, name, val):
4621  """Set parameter name with value val."""
4622  if __debug__:
4623  _z3_assert(isinstance(name, str), "parameter name must be a string")
4624  name_sym = to_symbol(name, self.ctx)
4625  if isinstance(val, bool):
4626  Z3_params_set_bool(self.ctx.ref(), self.params, name_sym, val)
4627  elif _is_int(val):
4628  Z3_params_set_uint(self.ctx.ref(), self.params, name_sym, val)
4629  elif isinstance(val, float):
4630  Z3_params_set_double(self.ctx.ref(), self.params, name_sym, val)
4631  elif isinstance(val, str):
4632  Z3_params_set_symbol(self.ctx.ref(), self.params, name_sym, to_symbol(val, self.ctx))
4633  else:
4634  if __debug__:
4635  _z3_assert(False, "invalid parameter value")
4636 
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:100
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 4640 of file z3py.py.

4640  def validate(self, ds):
4641  _z3_assert(isinstance(ds, ParamDescrsRef), "parameter description set expected")
4642  Z3_params_validate(self.ctx.ref(), self.params, ds.descr)
4643 
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

§ params

params

Definition at line 4613 of file z3py.py.