def is_aliasing(self):
if not self._init: return False
if not self.is_static or not self.is_final: return False
fld_a = None
if self._init.kind == C.E.DOT:
rcv_ty = exp.typ_of_e(None, self._init.le)
fld_a = clazz.find_fld(rcv_ty, self._init.re.id)
elif self._init.kind == C.E.ID:
fld_a = clazz.find_fld(self._clazz.name, self._init.id)
return fld_a != None
def typ(self, mtd):
curried = lambda e: e.typ(mtd)
if self.kind == C.E.ANNO:
anno = self.anno
if anno.name in [C.A.NEW, C.A.OBJ]: return anno.typ
elif anno.name in [C.A.CMP, C.A.CMP_STR]: return C.J.i
elif self.kind == C.E.C:
if self.c == C.J.N: return C.J.OBJ
elif self.c in [C.J.TRUE, C.J.FALSE]: return C.J.z
else: return C.J.i
elif self.kind == C.E.ID:
if hasattr(self, "ty"): return self.ty
v = self.id
try:
return mtd.vars[v]
except (AttributeError, KeyError):
if util.is_class_name(v): return v
elif util.is_str(v): return C.J.STR
elif util.is_char(v): return C.J.c
else:
fld = None
if mtd: fld = clazz.find_fld(mtd.clazz.name, v)
if fld: return fld.typ
else: return C.J.OBJ
elif self.kind == C.E.UOP:
return C.J.i
elif self.kind == C.E.BOP:
return C.J.i
elif self.kind == C.E.DOT:
# with package names, e.g., javax.swing.SwingUtilities
# also, avoid constant, e.g., KeyEvent.VK_*
if util.is_class_name(self.re.id) and class_lookup(self.re.id):
return self.re.id
else:
rcv_ty = curried(self.le)
if self.re.id == C.J.THIS: # ClassName.this
return rcv_ty
else: # instance field
fld = clazz.find_fld(rcv_ty, self.re.id)
return fld.typ
elif self.kind == C.E.IDX:
typ = curried(self.e)
return typ[:-2] # trim last "[]"
elif self.kind == C.E.NEW:
return curried(self.e)
elif self.kind == C.E.CALL:
arg_typs = map(curried, self.a)
if self.f.kind == C.E.DOT:
# inner class's <init>, e.g., ViewGroup.LayoutParams(...)
if util.is_class_name(self.f.re.id):
return unicode(self.f)
else: # rcv.mid
rcv_ty = curried(self.f.le)
mname = self.f.re.id
mtd_callees = clazz.find_mtds_by_sig(
rcv_ty, mname, arg_typs)
if mtd_callees:
# TODO: check all found types are compatible or return least upper bound
return mtd_callees[0].typ
else:
raise Exception("unresolved call: {}".format(
str(self)))
else: # mid
mname = self.f.id
if mname in C.typ_arrays:
return C.J.i
elif util.is_class_name(mname): # <init>
return mname
elif mname == C.J.SUP and mtd.is_init: # super() inside <init>
return mtd.clazz.sup
else:
if mname == C.J.SUP: # super(...)
mtd_callees = clazz.find_mtds_by_sig(
mtd.clazz.sup, mtd.name, mtd.param_typs)
else: # member methods
mtd_callees = clazz.find_mtds_by_sig(
mtd.clazz.name, mname, arg_typs)
if mtd_callees:
# TODO: check all found types are compatible or return least upper bound
return mtd_callees[0].typ
else:
raise Exception("unresolved call: {}".format(
str(self)))
elif self.kind == C.E.CAST:
return curried(self.ty)
else: # HOLE, GEN
return C.J.i
def typ(self, mtd):
curried = lambda e: e.typ(mtd)
if self.kind == C.E.ANNO:
anno = self.anno
if anno.name in [C.A.NEW, C.A.OBJ]:
return anno.typ
elif anno.name in [C.A.CMP, C.A.CMP_STR]:
return C.J.i
elif self.kind == C.E.C:
if self.c == C.J.N:
return C.J.OBJ
elif self.c in [C.J.TRUE, C.J.FALSE]:
return C.J.z
else:
return C.J.i
elif self.kind == C.E.ID:
if hasattr(self, "ty"):
return self.ty
v = self.id
try:
return mtd.vars[v]
except (AttributeError, KeyError):
if util.is_class_name(v):
return v
elif util.is_str(v):
return C.J.STR
elif util.is_char(v):
return C.J.c
else:
fld = None
if mtd:
fld = clazz.find_fld(mtd.clazz.name, v)
if fld:
return fld.typ
else:
return C.J.OBJ
elif self.kind == C.E.UOP:
return C.J.i
elif self.kind == C.E.BOP:
return C.J.i
elif self.kind == C.E.DOT:
# with package names, e.g., javax.swing.SwingUtilities
# also, avoid constant, e.g., KeyEvent.VK_*
if util.is_class_name(self.re.id) and class_lookup(self.re.id):
return self.re.id
else:
rcv_ty = curried(self.le)
if self.re.id == C.J.THIS: # ClassName.this
return rcv_ty
else: # instance field
fld = clazz.find_fld(rcv_ty, self.re.id)
return fld.typ
elif self.kind == C.E.IDX:
typ = curried(self.e)
return typ[:-2] # trim last "[]"
elif self.kind == C.E.NEW:
return curried(self.e)
elif self.kind == C.E.CALL:
arg_typs = map(curried, self.a)
if self.f.kind == C.E.DOT:
# inner class's <init>, e.g., ViewGroup.LayoutParams(...)
if util.is_class_name(self.f.re.id):
return unicode(self.f)
else: # rcv.mid
rcv_ty = curried(self.f.le)
mname = self.f.re.id
mtd_callees = clazz.find_mtds_by_sig(rcv_ty, mname, arg_typs)
if mtd_callees:
# TODO: check all found types are compatible or return least upper bound
return mtd_callees[0].typ
else:
raise Exception("unresolved call: {}".format(str(self)))
else: # mid
mname = self.f.id
if mname in C.typ_arrays:
return C.J.i
elif util.is_class_name(mname): # <init>
return mname
elif mname == C.J.SUP and mtd.is_init: # super() inside <init>
return mtd.clazz.sup
else:
if mname == C.J.SUP: # super(...)
mtd_callees = clazz.find_mtds_by_sig(mtd.clazz.sup, mtd.name, mtd.param_typs)
else: # member methods
mtd_callees = clazz.find_mtds_by_sig(mtd.clazz.name, mname, arg_typs)
if mtd_callees:
# TODO: check all found types are compatible or return least upper bound
return mtd_callees[0].typ
else:
raise Exception("unresolved call: {}".format(str(self)))
elif self.kind == C.E.CAST:
return curried(self.ty)
else: # HOLE, GEN
return C.J.i