1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
% Filename: %M%
% Version : %I%
% Date : %G%
%
\section[TcParQuals]{TcParQuals}
\begin{code}
module TcParQuals ( tcParQuals , tcPidPats , tcPidExprs ) where
#include "HsVersions.h"
import TcMonad -- typechecking monad machinery
import TcMonadFns
import AbsSyn -- the stuff being typechecked
import AbsPrel ( boolTy, mkProcessorTy, mkPodTy ,
toDomainId, fromDomainId
)
import AbsUniType
import Id ( mkInstId )
import Inst ( InstOrigin(..) )
import E
import LIE
import TcExpr ( tcExpr , tcExprs )
import TcPat ( tcPat , tcPats )
import Unify
import Util
\end{code}
\begin{code}
tcParQuals :: E -> RenamedParQuals -> TcM (TypecheckedParQuals,LIE)
tcParQuals e (AndParQuals quals1 quals2)
= (tcParQuals e quals1) `thenTc` (\ (quals1',lie1) ->
(tcParQuals e quals2) `thenTc` (\ (quals2',lie2) ->
returnTc (AndParQuals quals1' quals2', lie1 `plusLIE` lie2) ))
tcParQuals e (ParFilter expr)
= (tcExpr e expr) `thenTc` (\ (expr',lie,ty) ->
(unifyTauTy ty boolTy (ParFilterCtxt expr)) `thenTc_`
returnTc (ParFilter expr',lie) )
tcParQuals e (DrawnGenIn pats pat expr)
= (tcPidPats e pats) `thenTc` (\ (pats',convs,lie1,patsTy) ->
(tcPat e pat) `thenTc` (\ (pat' ,patTy, lie2) ->
(tcExpr e expr) `thenTc` (\ (expr',lie3,exprTy) ->
(unifyTauTy exprTy
(mkPodTy (mkProcessorTy patsTy patTy))
(DrawnCtxt pats pat expr)) `thenTc_`
returnTc (DrawnGenOut pats' convs pat' expr',
plusLIE (plusLIE lie1 lie2) lie3 ) )))
tcParQuals e (IndexGen exprs pat expr)
= (tcPidExprs e exprs) `thenTc` (\ (exprs',lie1,exprsTy) ->
(tcPat e pat) `thenTc` (\ (pat',patTy, lie2) ->
(tcExpr e expr) `thenTc` (\ (expr',lie3,exprTy) ->
(unifyTauTy exprTy
(mkPodTy (mkProcessorTy exprsTy patTy))
(IndexCtxt exprs pat expr)) `thenTc_`
returnTc (IndexGen exprs' pat' expr',
plusLIE (plusLIE lie1 lie2) lie3) )))
\end{code}
\begin{code}
tcPidExprs:: E -> [RenamedExpr] -> TcM ([TypecheckedExpr],LIE,[TauType])
tcPidExprs e exprs
= tcExprs e exprs `thenTc` (\ (exprs',lie,tys)->
getSrcLocTc `thenNF_Tc` (\ loc ->
listNF_Tc (map (getFromDomain loc) tys) `thenNF_Tc` (\ fromDomains ->
returnTc (zipWith mkConversion fromDomains exprs',
mkLIE fromDomains `plusLIE` lie,tys)
)))
where
getFromDomain loc ty
= newMethod (OccurrenceOf toDomainId loc) fromDomainId [ty]
mkConversion fromDom expr
= App (Var (mkInstId fromDom)) expr
\end{code}
\begin{code}
tcPidPats ::E ->[RenamedPat]->TcM ([TypecheckedPat], -- Expression
[TypecheckedExpr], -- Conversion fns
LIE,
[UniType])
tcPidPats e pats
= tcPats e pats `thenTc` (\ (pats',tys,lie)->
getSrcLocTc `thenNF_Tc` (\ loc ->
listNF_Tc (map (getToDomain loc) tys) `thenNF_Tc` (\ toDomains ->
returnTc (pats',map mkConversion toDomains,
mkLIE toDomains `plusLIE` lie,tys)
)))
where
getToDomain loc ty= newMethod (OccurrenceOf toDomainId loc) toDomainId [ty]
mkConversion toDom= Var (mkInstId toDom)
\end{code}
|
