FuncInterp Class Reference

Inheritance diagram for FuncInterp:

Public Member Functions
	__init__ (self, f, ctx)
	__del__ (self)
	else_value (self)
	num_entries (self)
	arity (self)
	entry (self, idx)
	translate (self, other_ctx)
	__copy__ (self)
	__deepcopy__ (self, memo={})
	as_list (self)
	__repr__ (self)
Public Member Functions inherited from Z3PPObject
	use_pp (self)

Data Fields
	f = f
	ctx = ctx
	model

Additional Inherited Members
Protected Member Functions inherited from Z3PPObject
	_repr_html_ (self)

Detailed Description

Stores the interpretation of a function in a Z3 model.

Definition at line 6865 of file z3py.py.

Constructor & Destructor Documentation

__init__()

__init__	(		self,
			f,
			ctx )

Definition at line 6868 of file z3py.py.

    def __init__(self, f, ctx):
        self.f = f
        self.ctx = ctx
        if self.f is not None:
            Z3_func_interp_inc_ref(self.ctx.ref(), self.f)
 

__del__()

__del__

(

self

)

Definition at line 6874 of file z3py.py.

    def __del__(self):
        if self.f is not None and self.ctx.ref() is not None and Z3_func_interp_dec_ref is not None:
            Z3_func_interp_dec_ref(self.ctx.ref(), self.f)
 

Member Function Documentation

__copy__()

__copy__

(

self

)

Definition at line 6956 of file z3py.py.

    def __copy__(self):
        return self.translate(self.ctx)
 

__deepcopy__()

__deepcopy__	(		self,
			memo = {} )

Definition at line 6959 of file z3py.py.

    def __deepcopy__(self, memo={}):
        return self.translate(self.ctx)
 

__repr__()

__repr__

(

self

)

Definition at line 6979 of file z3py.py.

    def __repr__(self):
        return obj_to_string(self)
 
 

arity()

arity

(

self

)

Return the number of arguments for each entry in the function interpretation `self`.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f].arity()
1

Definition at line 6917 of file z3py.py.

    def arity(self):
        """Return the number of arguments for each entry in the function interpretation `self`.
 
        >>> f = Function('f', IntSort(), IntSort())
        >>> s = Solver()
        >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
        >>> s.check()
        sat
        >>> m = s.model()
        >>> m[f].arity()
        1
        """
        return int(Z3_func_interp_get_arity(self.ctx.ref(), self.f))
 

as_list()

as_list

(

self

)

Return the function interpretation as a Python list.
>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].as_list()
[[2, 0], 1]

Definition at line 6962 of file z3py.py.

    def as_list(self):
        """Return the function interpretation as a Python list.
        >>> f = Function('f', IntSort(), IntSort())
        >>> s = Solver()
        >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
        >>> s.check()
        sat
        >>> m = s.model()
        >>> m[f]
        [2 -> 0, else -> 1]
        >>> m[f].as_list()
        [[2, 0], 1]
        """
        r = [self.entry(i).as_list() for i in range(self.num_entries())]
        r.append(self.else_value())
        return r
 

Referenced by as_list().

else_value()

else_value

(

self

)

Return the `else` value for a function interpretation.
Return None if Z3 did not specify the `else` value for
this object.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].else_value()
1

Definition at line 6878 of file z3py.py.

    def else_value(self):
        """
        Return the `else` value for a function interpretation.
        Return None if Z3 did not specify the `else` value for
        this object.
 
        >>> f = Function('f', IntSort(), IntSort())
        >>> s = Solver()
        >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
        >>> s.check()
        sat
        >>> m = s.model()
        >>> m[f]
        [2 -> 0, else -> 1]
        >>> m[f].else_value()
        1
        """
        r = Z3_func_interp_get_else(self.ctx.ref(), self.f)
        if r:
            return _to_expr_ref(r, self.ctx)
        else:
            return None
 

Referenced by as_list().

entry()

entry	(		self,
			idx )

Return an entry at position `idx < self.num_entries()` in the function interpretation `self`.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].num_entries()
1
>>> m[f].entry(0)
[2, 0]

Definition at line 6931 of file z3py.py.

    def entry(self, idx):
        """Return an entry at position `idx < self.num_entries()` in the function interpretation `self`.
 
        >>> f = Function('f', IntSort(), IntSort())
        >>> s = Solver()
        >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
        >>> s.check()
        sat
        >>> m = s.model()
        >>> m[f]
        [2 -> 0, else -> 1]
        >>> m[f].num_entries()
        1
        >>> m[f].entry(0)
        [2, 0]
        """
        if idx >= self.num_entries():
            raise IndexError
        return FuncEntry(Z3_func_interp_get_entry(self.ctx.ref(), self.f, idx), self.ctx)
 

Referenced by as_list().

num_entries()

num_entries

(

self

)

Return the number of entries/points in the function interpretation `self`.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].num_entries()
1

Definition at line 6901 of file z3py.py.

    def num_entries(self):
        """Return the number of entries/points in the function interpretation `self`.
 
        >>> f = Function('f', IntSort(), IntSort())
        >>> s = Solver()
        >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
        >>> s.check()
        sat
        >>> m = s.model()
        >>> m[f]
        [2 -> 0, else -> 1]
        >>> m[f].num_entries()
        1
        """
        return int(Z3_func_interp_get_num_entries(self.ctx.ref(), self.f))
 

Referenced by as_list(), and entry().

translate()

translate	(		self,
			other_ctx )

Copy model 'self' to context 'other_ctx'.

Definition at line 6951 of file z3py.py.

    def translate(self, other_ctx):
        """Copy model 'self' to context 'other_ctx'.
        """
        return ModelRef(Z3_model_translate(self.ctx.ref(), self.model, other_ctx.ref()), other_ctx)
 

Referenced by __copy__(), ModelRef.__copy__(), __deepcopy__(), and ModelRef.__deepcopy__().

Field Documentation

ctx

ctx = ctx

Definition at line 6870 of file z3py.py.

Referenced by __copy__(), ModelRef.__copy__(), __deepcopy__(), ModelRef.__deepcopy__(), Statistics.__deepcopy__(), __del__(), ModelRef.__del__(), Solver.__del__(), Statistics.__del__(), ModelRef.__getitem__(), Statistics.__getitem__(), ModelRef.__len__(), Statistics.__len__(), Statistics.__repr__(), arity(), Solver.assert_and_track(), Solver.assert_exprs(), Solver.check(), ModelRef.decls(), else_value(), entry(), ModelRef.eval(), ModelRef.get_interp(), Statistics.get_key_value(), ModelRef.get_sort(), ModelRef.get_universe(), Statistics.keys(), Solver.model(), num_entries(), Solver.num_scopes(), ModelRef.num_sorts(), Solver.pop(), ModelRef.project(), ModelRef.project_with_witness(), Solver.push(), Solver.reset(), Solver.set(), ModelRef.sexpr(), and ModelRef.translate().

f

f = f

Definition at line 6869 of file z3py.py.

Referenced by __del__(), arity(), else_value(), entry(), and num_entries().

model

model

Definition at line 6954 of file z3py.py.

Referenced by ModelRef.__del__(), ModelRef.__getitem__(), ModelRef.__len__(), ModelRef.decls(), ModelRef.eval(), ModelRef.get_interp(), ModelRef.get_sort(), ModelRef.get_universe(), ModelRef.num_sorts(), ModelRef.project(), ModelRef.project_with_witness(), ModelRef.sexpr(), ModelRef.translate(), and ModelRef.update_value().