def test___init__(self):
NamedOpetope.Typing(NamedOpetope.Term(NamedOpetope.Variable("a", 0)),
NamedOpetope.Type([NamedOpetope.Term()]))
NamedOpetope.Typing(
NamedOpetope.Term(NamedOpetope.Variable("f", 1)),
NamedOpetope.Type([
NamedOpetope.Term(NamedOpetope.Variable("a", 0)),
NamedOpetope.Term()
]))
with self.assertRaises(DerivationError):
NamedOpetope.Typing(
NamedOpetope.Term(NamedOpetope.Variable("a", 1)),
NamedOpetope.Type([NamedOpetope.Term()]))
with self.assertRaises(DerivationError):
NamedOpetope.Typing(
NamedOpetope.Term(NamedOpetope.Variable("f", 2)),
NamedOpetope.Type([
NamedOpetope.Term(NamedOpetope.Variable("a", 0)),
NamedOpetope.Term()
]))
with self.assertRaises(DerivationError):
NamedOpetope.Typing(
NamedOpetope.Term(NamedOpetope.Variable("f", 0)),
NamedOpetope.Type([
NamedOpetope.Term(NamedOpetope.Variable("a", 0)),
NamedOpetope.Term()
]))
def test___add__(self):
with self.assertRaises(DerivationError):
self.ctx5 + NamedOpetope.Typing(self.term1, self.typing1)
with self.assertRaises(DerivationError):
self.ctx5 + NamedOpetope.Typing(self.term2, self.typing2)
with self.assertRaises(DerivationError):
self.ctx5 + NamedOpetope.Typing(self.term3, self.typing3)
with self.assertRaises(DerivationError):
self.ctx5 + NamedOpetope.Typing(self.term4, self.typing4)
term = NamedOpetope.Term(NamedOpetope.Variable("x", 2))
term[NamedOpetope.Variable("a", 1)] = NamedOpetope.Term(
NamedOpetope.Variable("y", 2))
typing = NamedOpetope.Typing(term, self.typing3)
with self.assertRaises(DerivationError):
self.ctx5 + typing
def repres(seq: NamedOpetope.Sequent) -> NamedOpetope.OCMT:
"""
The :math:`\\textbf{OptSet${}^!$}` :math:`\\texttt{repr}` rule.
"""
if not seq.typing.term.isVariable():
raise DerivationError(
"repr rule",
"Opt! sequent expected to type a variable, typing {term}",
term=repr(seq.typing.term))
res = NamedOpetope.OCMT(deepcopy(seq.theory), deepcopy(seq.context))
# new context
for typing in seq.context:
v = typing.term.variable
if v is None:
raise RuntimeError("[repres rule] The premiss context types an "
"invalid / null term. In valid proof trees, "
"this should not happen")
for i in range(1, v.dimension + 1):
res.context += NamedOpetope.Typing(
NamedOpetope.Term(res.target(v, i)),
NamedOpetope.Type(typing.type.terms[i:]))
# new theory
for tup in seq.context.graftTuples():
b, a = tup
res.theory += (res.target(a), b)
for a in res.context.variables():
if a.dimension >= 2 and not res.source(a).degenerate:
s = res.source(a).variable
if s is None:
raise RuntimeError(
"[repres rule] The premiss context types "
"the variable {a} of dimension {dim}, "
"whose first source is invalid / null. In "
"valid proof trees, this should not happen".format(
a=str(a), dim=a.dimension))
res.theory += (res.target(a, 2), res.target(s))
for a in seq.context.variables():
for k in range(0, a.dimension - 1):
if res.source(res.target(a, k)).degenerate:
c = res.source(res.target(a, k)).variable
if c is None:
raise RuntimeError("[repres rule] The premiss context "
"types the variable {var} of dimension "
"{dim}, whose first source is invalid "
"/ null. In valid proof trees, this "
"should not happen".format(
var=str(res.target(a, k)),
dim=res.target(a, k).dimension))
res.theory += (res.target(a, k + 2), c)
# identification of targets
tmp = deepcopy(res.theory)
for cls in tmp.classes:
elems = list(cls)
dim = elems[0].dimension
for i in range(1, len(cls)):
for k in range(1, dim + 1):
res.theory += (res.target(elems[0],
k), res.target(elems[i], k))
return res
def pd(ocmt: NamedOpetope.OCMT, name: str) -> NamedOpetope.Sequent:
"""
The :math:`\\textbf{OptSet${}^!_m$}` :math:`\\texttt{pd}` rule.
Introduces the trivial non degenerate pasting diagram on a given variable.
"""
var = ocmt.context[name]
t = NamedOpetope.Typing(NamedOpetope.Term(var), ocmt.context.typeOf(var))
return NamedOpetope.Sequent(deepcopy(ocmt.theory), deepcopy(ocmt.context),
t)
def point(name: str) -> NamedOpetope.OCMT:
"""
The :math:`\\textbf{OptSet${}^!_m$}` :math:`\\texttt{point}` rule.
Introduces a :math:`0`-variable with name ``x``.
"""
t = NamedOpetope.Typing(NamedOpetope.Term(NamedOpetope.Variable(name, 0)),
NamedOpetope.Type([NamedOpetope.Term()]))
return NamedOpetope.OCMT(NamedOpetope.EquationalTheory(),
NamedOpetope.Context() + t)
def setUp(self):
self.term1 = NamedOpetope.Term(NamedOpetope.Variable("a", 0))
self.term2 = NamedOpetope.Term(NamedOpetope.Variable("f", 1))
self.term3 = NamedOpetope.Term(NamedOpetope.Variable("α", 2))
self.term4 = NamedOpetope.Term(NamedOpetope.Variable("A", 3))
self.typing1 = NamedOpetope.Type([NamedOpetope.Term()])
self.typing2 = NamedOpetope.Type([self.term1, NamedOpetope.Term()])
self.typing3 = NamedOpetope.Type(
[self.term2, self.term1,
NamedOpetope.Term()])
self.typing4 = NamedOpetope.Type(
[self.term3, self.term2, self.term1,
NamedOpetope.Term()])
self.ctx1 = NamedOpetope.Context()
self.ctx2 = self.ctx1 + NamedOpetope.Typing(self.term1, self.typing1)
self.ctx3 = self.ctx2 + NamedOpetope.Typing(self.term2, self.typing2)
self.ctx4 = self.ctx3 + NamedOpetope.Typing(self.term3, self.typing3)
self.ctx5 = self.ctx4 + NamedOpetope.Typing(self.term4, self.typing4)
def degen(ocmt: NamedOpetope.OCMT, name: str) -> NamedOpetope.Sequent:
"""
The :math:`\\textbf{OptSet${}^!_m$}` :math:`\\texttt{degen}` rule.
Introduces the degenerate pasting diagram on a given variable.
"""
var = ocmt.context[name]
type = ocmt.context.typeOf(var)
t = NamedOpetope.Typing(
NamedOpetope.Term(var, True),
NamedOpetope.Type([NamedOpetope.Term(var)] + type.terms))
return NamedOpetope.Sequent(deepcopy(ocmt.theory), deepcopy(ocmt.context),
t)
def shift(seq: NamedOpetope.Sequent, name: str) -> NamedOpetope.OCMT:
"""
The :math:`\\textbf{OptSet${}^!_m$}` :math:`\\texttt{shift}` rule.
Takes a sequent ``seq`` typing a term ``t`` and introduces
a new variable ``x`` having ``t`` as :math:`1`-source.
"""
n = seq.typing.term.dimension
var = NamedOpetope.Variable(name, n + 1)
if var in seq.context:
raise DerivationError(
"shift rule",
"NamedOpetope.Variable {var} already typed in context",
var=name)
typing = NamedOpetope.Typing(
NamedOpetope.Term(var),
NamedOpetope.Type([seq.typing.term] + seq.typing.type.terms))
res = NamedOpetope.OCMT(deepcopy(seq.theory),
deepcopy(seq.context) + typing)
# targets of new variable
for i in range(1, n + 2):
res.context += NamedOpetope.Typing(
NamedOpetope.Term(res.target(var, i)),
NamedOpetope.Type(typing.type.terms[i:]))
# additional theory
termVar = seq.typing.term.variable
if termVar is None:
raise RuntimeError(
"[shift rule] Premiss sequent types an invalid term. In valid "
"proof trees, this should not happen")
if seq.typing.term.degenerate:
for i in range(n):
res.theory += (res.target(var, i + 2), res.target(termVar, i))
elif n >= 1:
seq.theory += (res.target(var, 2), res.target(termVar))
for gt in seq.typing.term.graftTuples():
seq.theory += (res.target(gt[1]), gt[0])
return res
def setUp(self):
self.a1 = NamedOpetope.Variable("a1", 0)
self.b1 = NamedOpetope.Variable("b1", 0)
self.c1 = NamedOpetope.Variable("c1", 0)
self.a2 = NamedOpetope.Variable("a2", 0)
self.b2 = NamedOpetope.Variable("b2", 0)
self.c2 = NamedOpetope.Variable("c2", 0)
self.f = NamedOpetope.Variable("f", 1)
self.g = NamedOpetope.Variable("g", 1)
self.h = NamedOpetope.Variable("h", 1)
self.i = NamedOpetope.Variable("h", 1)
ctx = NamedOpetope.Context() + \
NamedOpetope.Typing(
NamedOpetope.Term(self.a1),
NamedOpetope.Type([NamedOpetope.Term()])) + \
NamedOpetope.Typing(
NamedOpetope.Term(self.b1),
NamedOpetope.Type([NamedOpetope.Term()])) + \
NamedOpetope.Typing(
NamedOpetope.Term(self.c1),
NamedOpetope.Type([NamedOpetope.Term()])) + \
NamedOpetope.Typing(
NamedOpetope.Term(self.f),
NamedOpetope.Type(
[NamedOpetope.Term(self.a2),
NamedOpetope.Term()])) + \
NamedOpetope.Typing(
NamedOpetope.Term(self.g),
NamedOpetope.Type(
[NamedOpetope.Term(self.b2), NamedOpetope.Term()])) + \
NamedOpetope.Typing(
NamedOpetope.Term(self.h),
NamedOpetope.Type(
[NamedOpetope.Term(self.c2), NamedOpetope.Term()]))
eqth = NamedOpetope.EquationalTheory() + \
(self.b1, self.b2) + \
(self.c1, self.c2) + \
(self.h, self.i)
self.sequent = NamedOpetope.Sequent(eqth, ctx, None)
self.fg = self.sequent.graft(NamedOpetope.Term(self.g), self.b2,
NamedOpetope.Term(self.f))
self.gh = self.sequent.graft(NamedOpetope.Term(self.h), self.c2,
NamedOpetope.Term(self.g))
self.fgh1 = self.sequent.graft(self.gh, self.b2,
NamedOpetope.Term(self.f))
self.fgh2 = self.sequent.graft(NamedOpetope.Term(self.h), self.c2,
self.fg)
