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type checking EPatt

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krasimir
2017-03-06 16:24:58 +00:00
parent a0d6a4f9a4
commit 6c5cfa7750
1 changed files with 16 additions and 1 deletions
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17
src/compiler/GF/Compile/TypeCheck/ConcreteNew.hs
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@@ -238,6 +238,13 @@ tcRho ge scope (Strs ss) mb_ty = do
tcRho ge scope (EPattType ty) mb_ty = do tcRho ge scope (EPattType ty) mb_ty = do
(ty, _) <- tcRho ge scope ty (Just vtypeType) (ty, _) <- tcRho ge scope ty (Just vtypeType)
instSigma ge scope (EPattType ty) vtypeType mb_ty instSigma ge scope (EPattType ty) vtypeType mb_ty
tcRho ge scope (EPatt p) mb_ty = do
ty <- case mb_ty of
Nothing -> do i <- newMeta scope vtypeType
return (VMeta i (scopeEnv scope) [])
Just ty -> unifyPatt ge scope ty
tcPatt ge scope p ty
return (EPatt p, ty)
tcRho gr scope t _ = unimplemented ("tcRho "++show t) tcRho gr scope t _ = unimplemented ("tcRho "++show t)
tcCases ge scope [] p_ty mb_res_ty = return ([],mb_res_ty) tcCases ge scope [] p_ty mb_res_ty = return ([],mb_res_ty)
@@ -508,12 +515,20 @@ unifyTbl :: GlobalEnv -> Scope -> Rho -> TcM (Sigma, Rho)
unifyTbl ge scope (VTblType arg res) = unifyTbl ge scope (VTblType arg res) =
return (arg,res) return (arg,res)
unifyTbl ge scope tau = do unifyTbl ge scope tau = do
let mk_val ty = VMeta ty [] [] let mk_val ty = VMeta ty (scopeEnv scope) []
arg <- fmap mk_val $ newMeta scope vtypePType arg <- fmap mk_val $ newMeta scope vtypePType
res <- fmap mk_val $ newMeta scope vtypeType res <- fmap mk_val $ newMeta scope vtypeType
unify ge scope tau (VTblType arg res) unify ge scope tau (VTblType arg res)
return (arg,res) return (arg,res)
unifyPatt ge scope (VPattType ty) =
return ty
unifyPatt ge scope ty = do
i <- newMeta scope vtypeType
let ty = VMeta i (scopeEnv scope) []
unify ge scope ty (VPattType ty)
return ty
unify ge scope (VApp f1 vs1) (VApp f2 vs2) unify ge scope (VApp f1 vs1) (VApp f2 vs2)
| f1 == f2 = sequence_ (zipWith (unify ge scope) vs1 vs2) | f1 == f2 = sequence_ (zipWith (unify ge scope) vs1 vs2)
unify ge scope (VCApp f1 vs1) (VCApp f2 vs2) unify ge scope (VCApp f1 vs1) (VCApp f2 vs2)