minor refactor

This commit is contained in:
rhiannon morris 2024-04-18 11:49:19 +02:00
parent 7f72ed56fb
commit c9f66bb6af

View file

@ -30,6 +30,10 @@ export %inline
mode : Has EqModeState fs => Eff fs EqMode
mode = get
private %inline
withEqual : Has EqModeState fs => Eff fs a -> Eff fs a
withEqual = local_ Equal
parameters (loc : Loc) (ctx : EqContext n)
private %inline
@ -242,7 +246,7 @@ namespace Term
(E _, _) => wrongType t.loc ctx ty t
_ => wrongType s.loc ctx ty s
compare0' defs ctx sg ty@(Pi {qty, arg, res, _}) s t = local_ Equal $
compare0' defs ctx sg ty@(Pi {qty, arg, res, _}) s t = withEqual $
-- Γ ⊢ A empty
-- -------------------------------------------
-- Γ ⊢ (λ x ⇒ s) = (λ x ⇒ t) ⇐ (π·x : A) → B
@ -276,7 +280,7 @@ namespace Term
eta loc e (S _ (N _)) = clashT loc ctx ty s t
eta _ e (S _ (Y b)) = compare0 defs ctx' sg res.term (toLamBody e) b
compare0' defs ctx sg ty@(Sig {fst, snd, _}) s t = local_ Equal $
compare0' defs ctx sg ty@(Sig {fst, snd, _}) s t = withEqual $
case (s, t) of
-- Γ ⊢ s₁ = t₁ ⇐ A Γ ⊢ s₂ = t₂ ⇐ B{s₁/x}
-- --------------------------------------------
@ -302,7 +306,7 @@ namespace Term
compare0 defs ctx sg (sub1 snd (Ann s fst s.loc)) (E $ Snd e e.loc) t
SOne => clashT loc ctx ty s t
compare0' defs ctx sg ty@(Enum cases _) s t = local_ Equal $
compare0' defs ctx sg ty@(Enum cases _) s t = withEqual $
-- η for empty & singleton enums
if length (SortedSet.toList cases) <= 1 then pure () else
case (s, t) of
@ -327,7 +331,7 @@ namespace Term
-- Γ ⊢ e = f ⇐ Eq [i ⇒ A] s t
pure ()
compare0' defs ctx sg nat@(NAT {}) s t = local_ Equal $
compare0' defs ctx sg nat@(NAT {}) s t = withEqual $
case (s, t) of
-- ---------------
-- Γ ⊢ n = n ⇐
@ -354,7 +358,7 @@ namespace Term
(E _, t) => wrongType t.loc ctx nat t
(s, _) => wrongType s.loc ctx nat s
compare0' defs ctx sg str@(STRING {}) s t = local_ Equal $
compare0' defs ctx sg str@(STRING {}) s t = withEqual $
case (s, t) of
(Str x _, Str y _) => unless (x == y) $ clashT s.loc ctx str s t
@ -367,7 +371,7 @@ namespace Term
(E _, _) => wrongType t.loc ctx str t
_ => wrongType s.loc ctx str s
compare0' defs ctx sg bty@(BOX q ty {}) s t = local_ Equal $
compare0' defs ctx sg bty@(BOX q ty {}) s t = withEqual $
case (s, t) of
-- Γ ⊢ s = t ⇐ A
-- -----------------------
@ -445,7 +449,7 @@ compareType' defs ctx (Eq {ty = sTy, l = sl, r = sr, _})
compareType defs (extendDim sTy.name Zero ctx) sTy.zero tTy.zero
compareType defs (extendDim sTy.name One ctx) sTy.one tTy.one
ty <- bigger sTy tTy
local_ Equal $ do
withEqual $ do
Term.compare0 defs ctx SZero ty.zero sl tl
Term.compare0 defs ctx SZero ty.one sr tr
@ -545,8 +549,8 @@ namespace Elim
try act = lift $ catch putError $ lift act {fs' = EqualElim}
private %inline
nested : Eff EqualInner a -> Eff EqualElim (Either Error a)
nested act = lift $ runExcept act
succeeds : Eff EqualInner a -> Eff EqualElim Bool
succeeds act = lift $ map isRight $ runExcept act
private covering %inline
clashE : (defs : Definitions) -> (ctx : EqContext n) -> (sg : SQty) ->
@ -618,16 +622,14 @@ namespace Elim
-- Ψ | Γ ⊢ coe (𝑖 ⇒ A) @p @q s ⇝ (s ∷ A1/𝑖) ⇒ A1/𝑖
--
-- it's here so that whnf doesn't have to depend on the equality checker
compare0Inner' defs ctx sg (Coe ty p q val loc) f _ _ = do
tyEq <- nested $ local_ Equal $ compareType defs ctx ty.zero ty.one
if isRight tyEq
compare0Inner' defs ctx sg (Coe ty p q val loc) f _ _ =
if !(succeeds $ withEqual $ compareType defs ctx ty.zero ty.one)
then compare0Inner defs ctx sg (Ann val (dsub1 ty q) loc) f
else clashE defs ctx sg (Coe ty p q val loc) f
-- symmetric version of the above
compare0Inner' defs ctx sg e (Coe ty p q val loc) _ _ = do
tyEq <- nested $ local_ Equal $ compareType defs ctx ty.zero ty.one
if isRight tyEq
compare0Inner' defs ctx sg e (Coe ty p q val loc) _ _ =
if !(succeeds $ withEqual $ compareType defs ctx ty.zero ty.one)
then compare0Inner defs ctx sg e (Ann val (dsub1 ty q) loc)
else clashE defs ctx sg e (Coe ty p q val loc)
@ -659,7 +661,7 @@ namespace Elim
-- = caseπ f return R of { (x, y) ⇒ t } ⇒ Q[e/p]
compare0Inner' defs ctx sg (CasePair epi e eret ebody eloc)
(CasePair fpi f fret fbody floc) ne nf =
local_ Equal $ do
withEqual $ do
ety <- compare0Inner defs ctx sg e f
(fst, snd) <- expectSig defs ctx sg eloc ety
let [< x, y] = ebody.names
@ -678,7 +680,7 @@ namespace Elim
-- ------------------------------
-- Ψ | Γ ⊢ fst e = fst f ⇒ A
compare0Inner' defs ctx sg (Fst e eloc) (Fst f floc) ne nf =
local_ Equal $ do
withEqual $ do
ety <- compare0Inner defs ctx sg e f
fst <$> expectSig defs ctx sg eloc ety
compare0Inner' defs ctx sg e@(Fst {}) f _ _ =
@ -688,7 +690,7 @@ namespace Elim
-- ------------------------------------
-- Ψ | Γ ⊢ snd e = snd f ⇒ B[fst e/x]
compare0Inner' defs ctx sg (Snd e eloc) (Snd f floc) ne nf =
local_ Equal $ do
withEqual $ do
ety <- compare0Inner defs ctx sg e f
(_, tsnd) <- expectSig defs ctx sg eloc ety
pure $ sub1 tsnd (Fst e eloc)
@ -703,7 +705,7 @@ namespace Elim
-- = caseπ f return R of { '𝐚ᵢ ⇒ tᵢ } ⇒ Q[e/x]
compare0Inner' defs ctx sg (CaseEnum epi e eret earms eloc)
(CaseEnum fpi f fret farms floc) ne nf =
local_ Equal $ do
withEqual $ do
ety <- compare0Inner defs ctx sg e f
try $
compareType defs (extendTy0 eret.name ety ctx) eret.term fret.term
@ -726,7 +728,7 @@ namespace Elim
-- ⇒ Q[e/x]
compare0Inner' defs ctx sg (CaseNat epi epi' e eret ezer esuc eloc)
(CaseNat fpi fpi' f fret fzer fsuc floc) ne nf =
local_ Equal $ do
withEqual $ do
ety <- compare0Inner defs ctx sg e f
let [< p, ih] = esuc.names
try $ do
@ -750,7 +752,7 @@ namespace Elim
-- = caseπ f return R of { [x] ⇒ t } ⇒ Q[e/x]
compare0Inner' defs ctx sg (CaseBox epi e eret ebody eloc)
(CaseBox fpi f fret fbody floc) ne nf =
local_ Equal $ do
withEqual $ do
ety <- compare0Inner defs ctx sg e f
(q, ty) <- expectBOX defs ctx sg eloc ety
try $ do
@ -776,7 +778,7 @@ namespace Elim
compare0Inner' defs ctx sg (TypeCase ty1 ret1 arms1 def1 eloc)
(TypeCase ty2 ret2 arms2 def2 floc) ne _ =
case sg `decEq` SZero of
Yes Refl => local_ Equal $ do
Yes Refl => withEqual $ do
ety <- compare0Inner defs ctx SZero ty1 ty2
u <- expectTYPE defs ctx SZero eloc ety
try $ do