Z3
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UserPropagateBase Class Reference

Public Member Functions

 __init__ (self, s, ctx=None)
 __del__ (self)
 ctx (self)
 ctx_ref (self)
 add_fixed (self, fixed)
 add_created (self, created)
 add_final (self, final)
 add_eq (self, eq)
 add_diseq (self, diseq)
 add_decide (self, decide)
 push (self)
 pop (self, num_scopes)
 fresh (self, new_ctx)
 add (self, e)
 next_split (self, t, idx, phase)
 propagate (self, e, ids, eqs=[])
 conflict (self, deps=[], eqs=[])

Data Fields

 solver = s
 fresh_ctx = None
 cb = None
 id = _prop_closures.insert(self)
 fixed = None
 final = None
 eq = None
 diseq = None
 decide = None
 created = None

Protected Attributes

 _ctx = None

Detailed Description

Definition at line 11810 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

__init__ ( self,
s,
ctx = None )

Definition at line 11819 of file z3py.py.

11819 def __init__(self, s, ctx=None):
11820 assert s is None or ctx is None
11821 ensure_prop_closures()
11822 self.solver = s
11823 self._ctx = None
11824 self.fresh_ctx = None
11825 self.cb = None
11826 self.id = _prop_closures.insert(self)
11827 self.fixed = None
11828 self.final = None
11829 self.eq = None
11830 self.diseq = None
11831 self.decide = None
11832 self.created = None
11833 if ctx:
11834 self.fresh_ctx = ctx
11835 if s:
11836 Z3_solver_propagate_init(self.ctx_ref(),
11837 s.solver,
11838 ctypes.c_void_p(self.id),
11839 _user_prop_push,
11840 _user_prop_pop,
11841 _user_prop_fresh)
11842
void Z3_API Z3_solver_propagate_init(Z3_context c, Z3_solver s, void *user_context, Z3_push_eh push_eh, Z3_pop_eh pop_eh, Z3_fresh_eh fresh_eh)
register a user-propagator with the solver.

◆ __del__()

__del__ ( self)

Definition at line 11843 of file z3py.py.

11843 def __del__(self):
11844 if self._ctx:
11845 self._ctx.ctx = None
11846

Member Function Documentation

◆ add()

add ( self,
e )

Definition at line 11907 of file z3py.py.

11907 def add(self, e):
11908 assert not self._ctx
11909 if self.solver:
11910 Z3_solver_propagate_register(self.ctx_ref(), self.solver.solver, e.ast)
11911 else:
11912 Z3_solver_propagate_register_cb(self.ctx_ref(), ctypes.c_void_p(self.cb), e.ast)
11913
void Z3_API Z3_solver_propagate_register_cb(Z3_context c, Z3_solver_callback cb, Z3_ast e)
register an expression to propagate on with the solver. Only expressions of type Bool and type Bit-Ve...
void Z3_API Z3_solver_propagate_register(Z3_context c, Z3_solver s, Z3_ast e)
register an expression to propagate on with the solver. Only expressions of type Bool and type Bit-Ve...

◆ add_created()

add_created ( self,
created )

Definition at line 11863 of file z3py.py.

11863 def add_created(self, created):
11864 assert not self.created
11865 assert not self._ctx
11866 if self.solver:
11867 Z3_solver_propagate_created(self.ctx_ref(), self.solver.solver, _user_prop_created)
11868 self.created = created
11869
void Z3_API Z3_solver_propagate_created(Z3_context c, Z3_solver s, Z3_created_eh created_eh)
register a callback when a new expression with a registered function is used by the solver The regist...

◆ add_decide()

add_decide ( self,
decide )

Definition at line 11891 of file z3py.py.

11891 def add_decide(self, decide):
11892 assert not self.decide
11893 assert not self._ctx
11894 if self.solver:
11895 Z3_solver_propagate_decide(self.ctx_ref(), self.solver.solver, _user_prop_decide)
11896 self.decide = decide
11897
void Z3_API Z3_solver_propagate_decide(Z3_context c, Z3_solver s, Z3_decide_eh decide_eh)
register a callback when the solver decides to split on a registered expression. The callback may cha...

◆ add_diseq()

add_diseq ( self,
diseq )

Definition at line 11884 of file z3py.py.

11884 def add_diseq(self, diseq):
11885 assert not self.diseq
11886 assert not self._ctx
11887 if self.solver:
11888 Z3_solver_propagate_diseq(self.ctx_ref(), self.solver.solver, _user_prop_diseq)
11889 self.diseq = diseq
11890
void Z3_API Z3_solver_propagate_diseq(Z3_context c, Z3_solver s, Z3_eq_eh eq_eh)
register a callback on expression dis-equalities.

◆ add_eq()

add_eq ( self,
eq )

Definition at line 11877 of file z3py.py.

11877 def add_eq(self, eq):
11878 assert not self.eq
11879 assert not self._ctx
11880 if self.solver:
11881 Z3_solver_propagate_eq(self.ctx_ref(), self.solver.solver, _user_prop_eq)
11882 self.eq = eq
11883
void Z3_API Z3_solver_propagate_eq(Z3_context c, Z3_solver s, Z3_eq_eh eq_eh)
register a callback on expression equalities.

◆ add_final()

add_final ( self,
final )

Definition at line 11870 of file z3py.py.

11870 def add_final(self, final):
11871 assert not self.final
11872 assert not self._ctx
11873 if self.solver:
11874 Z3_solver_propagate_final(self.ctx_ref(), self.solver.solver, _user_prop_final)
11875 self.final = final
11876
void Z3_API Z3_solver_propagate_final(Z3_context c, Z3_solver s, Z3_final_eh final_eh)
register a callback on final check. This provides freedom to the propagator to delay actions or imple...

◆ add_fixed()

add_fixed ( self,
fixed )

Definition at line 11856 of file z3py.py.

11856 def add_fixed(self, fixed):
11857 assert not self.fixed
11858 assert not self._ctx
11859 if self.solver:
11860 Z3_solver_propagate_fixed(self.ctx_ref(), self.solver.solver, _user_prop_fixed)
11861 self.fixed = fixed
11862
void Z3_API Z3_solver_propagate_fixed(Z3_context c, Z3_solver s, Z3_fixed_eh fixed_eh)
register a callback for when an expression is bound to a fixed value. The supported expression types ...

◆ conflict()

conflict ( self,
deps = [],
eqs = [] )

Definition at line 11933 of file z3py.py.

11933 def conflict(self, deps = [], eqs = []):
11934 self.propagate(BoolVal(False, self.ctx()), deps, eqs)

◆ ctx()

ctx ( self)

Definition at line 11847 of file z3py.py.

11847 def ctx(self):
11848 if self.fresh_ctx:
11849 return self.fresh_ctx
11850 else:
11851 return self.solver.ctx
11852

◆ ctx_ref()

ctx_ref ( self)

Definition at line 11853 of file z3py.py.

11853 def ctx_ref(self):
11854 return self.ctx().ref()
11855

◆ fresh()

fresh ( self,
new_ctx )

Definition at line 11904 of file z3py.py.

11904 def fresh(self, new_ctx):
11905 raise Z3Exception("fresh needs to be overwritten")
11906

◆ next_split()

next_split ( self,
t,
idx,
phase )

Definition at line 11919 of file z3py.py.

11919 def next_split(self, t, idx, phase):
11920 return Z3_solver_next_split(self.ctx_ref(), ctypes.c_void_p(self.cb), t.ast, idx, phase)
11921
bool Z3_API Z3_solver_next_split(Z3_context c, Z3_solver_callback cb, Z3_ast t, unsigned idx, Z3_lbool phase)

◆ pop()

pop ( self,
num_scopes )

Definition at line 11901 of file z3py.py.

11901 def pop(self, num_scopes):
11902 raise Z3Exception("pop needs to be overwritten")
11903

◆ propagate()

propagate ( self,
e,
ids,
eqs = [] )

Definition at line 11925 of file z3py.py.

11925 def propagate(self, e, ids, eqs=[]):
11926 _ids, num_fixed = _to_ast_array(ids)
11927 num_eqs = len(eqs)
11928 _lhs, _num_lhs = _to_ast_array([x for x, y in eqs])
11929 _rhs, _num_rhs = _to_ast_array([y for x, y in eqs])
11930 return Z3_solver_propagate_consequence(e.ctx.ref(), ctypes.c_void_p(
11931 self.cb), num_fixed, _ids, num_eqs, _lhs, _rhs, e.ast)
11932
bool Z3_API Z3_solver_propagate_consequence(Z3_context c, Z3_solver_callback cb, unsigned num_fixed, Z3_ast const *fixed, unsigned num_eqs, Z3_ast const *eq_lhs, Z3_ast const *eq_rhs, Z3_ast conseq)
propagate a consequence based on fixed values and equalities. A client may invoke it during the pro...

◆ push()

push ( self)

Definition at line 11898 of file z3py.py.

11898 def push(self):
11899 raise Z3Exception("push needs to be overwritten")
11900

Field Documentation

◆ _ctx

_ctx = None
protected

Definition at line 11823 of file z3py.py.

◆ cb

cb = None

Definition at line 11825 of file z3py.py.

◆ created

created = None

Definition at line 11832 of file z3py.py.

◆ decide

decide = None

Definition at line 11831 of file z3py.py.

◆ diseq

diseq = None

Definition at line 11830 of file z3py.py.

◆ eq

eq = None

Definition at line 11829 of file z3py.py.

Referenced by AstRef.__eq__(), and SortRef.cast().

◆ final

final = None

Definition at line 11828 of file z3py.py.

◆ fixed

fixed = None

Definition at line 11827 of file z3py.py.

◆ fresh_ctx

fresh_ctx = None

Definition at line 11824 of file z3py.py.

◆ id

id = _prop_closures.insert(self)

Definition at line 11826 of file z3py.py.

◆ solver

solver = s

Definition at line 11822 of file z3py.py.