FuncEntry Class Reference

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

Data Fields
	entry = entry
	ctx = ctx

Detailed Description

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

Definition at line 6360 of file z3py.py.

Constructor & Destructor Documentation

__init__()

__init__	(		self,
			entry,
			ctx )

Definition at line 6363 of file z3py.py.

    def __init__(self, entry, ctx):
        self.entry = entry
        self.ctx = ctx
        Z3_func_entry_inc_ref(self.ctx.ref(), self.entry)
 

__del__()

__del__

(

self

)

Definition at line 6371 of file z3py.py.

    def __del__(self):
        if self.ctx.ref() is not None and Z3_func_entry_dec_ref is not None:
            Z3_func_entry_dec_ref(self.ctx.ref(), self.entry)
 

Member Function Documentation

__deepcopy__()

__deepcopy__	(		self,
			memo = {} )

Definition at line 6368 of file z3py.py.

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

__repr__()

__repr__

(

self

)

Definition at line 6465 of file z3py.py.

    def __repr__(self):
        return repr(self.as_list())
 
 

arg_value()

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 6393 of file z3py.py.

    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
        """
        if idx >= self.num_args():
            raise IndexError
        return _to_expr_ref(Z3_func_entry_get_arg(self.ctx.ref(), self.entry, idx), self.ctx)
 

Referenced by as_list().

as_list()

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 6446 of file z3py.py.

    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]
        """
        args = [self.arg_value(i) for i in range(self.num_args())]
        args.append(self.value())
        return args
 

Referenced by __repr__().

num_args()

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 6375 of file z3py.py.

    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
        """
        return int(Z3_func_entry_get_num_args(self.ctx.ref(), self.entry))
 

Referenced by AstRef.__bool__(), arg_value(), and as_list().

value()

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 6424 of file z3py.py.

    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
        """
        return _to_expr_ref(Z3_func_entry_get_value(self.ctx.ref(), self.entry), self.ctx)
 

Referenced by as_list().

Field Documentation

ctx

ctx = ctx

Definition at line 6365 of file z3py.py.

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

entry

entry = entry

Definition at line 6364 of file z3py.py.

Referenced by __deepcopy__(), __del__(), arg_value(), FuncInterp.as_list(), num_args(), and value().