def testExport2(self):
"""Repeated theorems."""
pt1 = ProofTerm.assume(Term.mk_equals(x, y))
pt2 = ProofTerm.reflexive(f)
pt3 = ProofTerm.combination(pt2, pt1) # f x = f y
pt4 = ProofTerm.combination(pt3, pt1) # f x x = f y y
prf = pt4.export()
self.assertEqual(len(prf.items), 4)
self.assertEqual(thy.check_proof(prf), pt4.th)
def get_proof_term(self, thy, t):
if t.ty != Term.COMB:
raise ConvException()
pt1 = self.cv1.get_proof_term(thy, t.fun)
pt2 = self.cv2.get_proof_term(thy, t.arg)
# Obtain some savings if one of pt1 and pt2 is reflexivity:
if pt1.th.is_reflexive():
return ProofTerm.arg_combination(thy, pt1.prop.rhs, pt2)
elif pt2.th.is_reflexive():
return ProofTerm.fun_combination(thy, pt2.prop.rhs, pt1)
else:
return ProofTerm.combination(pt1, pt2)
def get_proof_term(self, thy, x, pts):
assert pts[0].prop.is_equals(), "fun_combination"
return ProofTerm.combination(pts[0], refl(x))
def get_proof_term(self, thy, f, pts):
assert pts[0].prop.is_equals(), "arg_combination"
return ProofTerm.combination(refl(f), pts[0])