Z3
 
Loading...
Searching...
No Matches
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 11806 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

__init__ ( self,
s,
ctx = None )

Definition at line 11815 of file z3py.py.

11815 def __init__(self, s, ctx=None):
11816 assert s is None or ctx is None
11817 ensure_prop_closures()
11818 self.solver = s
11819 self._ctx = None
11820 self.fresh_ctx = None
11821 self.cb = None
11822 self.id = _prop_closures.insert(self)
11823 self.fixed = None
11824 self.final = None
11825 self.eq = None
11826 self.diseq = None
11827 self.decide = None
11828 self.created = None
11829 if ctx:
11830 self.fresh_ctx = ctx
11831 if s:
11832 Z3_solver_propagate_init(self.ctx_ref(),
11833 s.solver,
11834 ctypes.c_void_p(self.id),
11835 _user_prop_push,
11836 _user_prop_pop,
11837 _user_prop_fresh)
11838
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 11839 of file z3py.py.

11839 def __del__(self):
11840 if self._ctx:
11841 self._ctx.ctx = None
11842

Member Function Documentation

◆ add()

add ( self,
e )

Definition at line 11903 of file z3py.py.

11903 def add(self, e):
11904 assert not self._ctx
11905 if self.solver:
11906 Z3_solver_propagate_register(self.ctx_ref(), self.solver.solver, e.ast)
11907 else:
11908 Z3_solver_propagate_register_cb(self.ctx_ref(), ctypes.c_void_p(self.cb), e.ast)
11909
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 11859 of file z3py.py.

11859 def add_created(self, created):
11860 assert not self.created
11861 assert not self._ctx
11862 if self.solver:
11863 Z3_solver_propagate_created(self.ctx_ref(), self.solver.solver, _user_prop_created)
11864 self.created = created
11865
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 11887 of file z3py.py.

11887 def add_decide(self, decide):
11888 assert not self.decide
11889 assert not self._ctx
11890 if self.solver:
11891 Z3_solver_propagate_decide(self.ctx_ref(), self.solver.solver, _user_prop_decide)
11892 self.decide = decide
11893
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 11880 of file z3py.py.

11880 def add_diseq(self, diseq):
11881 assert not self.diseq
11882 assert not self._ctx
11883 if self.solver:
11884 Z3_solver_propagate_diseq(self.ctx_ref(), self.solver.solver, _user_prop_diseq)
11885 self.diseq = diseq
11886
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 11873 of file z3py.py.

11873 def add_eq(self, eq):
11874 assert not self.eq
11875 assert not self._ctx
11876 if self.solver:
11877 Z3_solver_propagate_eq(self.ctx_ref(), self.solver.solver, _user_prop_eq)
11878 self.eq = eq
11879
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 11866 of file z3py.py.

11866 def add_final(self, final):
11867 assert not self.final
11868 assert not self._ctx
11869 if self.solver:
11870 Z3_solver_propagate_final(self.ctx_ref(), self.solver.solver, _user_prop_final)
11871 self.final = final
11872
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 11852 of file z3py.py.

11852 def add_fixed(self, fixed):
11853 assert not self.fixed
11854 assert not self._ctx
11855 if self.solver:
11856 Z3_solver_propagate_fixed(self.ctx_ref(), self.solver.solver, _user_prop_fixed)
11857 self.fixed = fixed
11858
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 11929 of file z3py.py.

11929 def conflict(self, deps = [], eqs = []):
11930 self.propagate(BoolVal(False, self.ctx()), deps, eqs)

◆ ctx()

ctx ( self)

Definition at line 11843 of file z3py.py.

11843 def ctx(self):
11844 if self.fresh_ctx:
11845 return self.fresh_ctx
11846 else:
11847 return self.solver.ctx
11848

◆ ctx_ref()

ctx_ref ( self)

Definition at line 11849 of file z3py.py.

11849 def ctx_ref(self):
11850 return self.ctx().ref()
11851

◆ fresh()

fresh ( self,
new_ctx )

Definition at line 11900 of file z3py.py.

11900 def fresh(self, new_ctx):
11901 raise Z3Exception("fresh needs to be overwritten")
11902

◆ next_split()

next_split ( self,
t,
idx,
phase )

Definition at line 11915 of file z3py.py.

11915 def next_split(self, t, idx, phase):
11916 return Z3_solver_next_split(self.ctx_ref(), ctypes.c_void_p(self.cb), t.ast, idx, phase)
11917
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 11897 of file z3py.py.

11897 def pop(self, num_scopes):
11898 raise Z3Exception("pop needs to be overwritten")
11899

◆ propagate()

propagate ( self,
e,
ids,
eqs = [] )

Definition at line 11921 of file z3py.py.

11921 def propagate(self, e, ids, eqs=[]):
11922 _ids, num_fixed = _to_ast_array(ids)
11923 num_eqs = len(eqs)
11924 _lhs, _num_lhs = _to_ast_array([x for x, y in eqs])
11925 _rhs, _num_rhs = _to_ast_array([y for x, y in eqs])
11926 return Z3_solver_propagate_consequence(e.ctx.ref(), ctypes.c_void_p(
11927 self.cb), num_fixed, _ids, num_eqs, _lhs, _rhs, e.ast)
11928
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 11894 of file z3py.py.

11894 def push(self):
11895 raise Z3Exception("push needs to be overwritten")
11896

Field Documentation

◆ _ctx

_ctx = None
protected

Definition at line 11819 of file z3py.py.

◆ cb

cb = None

Definition at line 11821 of file z3py.py.

◆ created

created = None

Definition at line 11828 of file z3py.py.

◆ decide

decide = None

Definition at line 11827 of file z3py.py.

◆ diseq

diseq = None

Definition at line 11826 of file z3py.py.

◆ eq

eq = None

Definition at line 11825 of file z3py.py.

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

◆ final

final = None

Definition at line 11824 of file z3py.py.

◆ fixed

fixed = None

Definition at line 11823 of file z3py.py.

◆ fresh_ctx

fresh_ctx = None

Definition at line 11820 of file z3py.py.

◆ id

id = _prop_closures.insert(self)

Definition at line 11822 of file z3py.py.

◆ solver

solver = s

Definition at line 11818 of file z3py.py.