|
1
|
1 module atton-master-meta-sample where
|
|
|
2
|
|
|
3 open import Data.Nat
|
|
|
4 open import Data.Unit
|
|
|
5 open import Function
|
|
|
6 Int = ℕ
|
|
|
7
|
|
|
8 record Context : Set where
|
|
|
9 field
|
|
|
10 a : Int
|
|
|
11 b : Int
|
|
|
12 c : Int
|
|
|
13
|
|
|
14 open import subtype Context as N
|
|
|
15
|
|
|
16 record Meta : Set where
|
|
|
17 field
|
|
|
18 context : Context
|
|
|
19 c' : Int
|
|
|
20 next : N.CodeSegment Context Context
|
|
|
21
|
|
|
22 open import subtype Meta as M
|
|
|
23
|
|
|
24 instance
|
|
|
25 _ : N.DataSegment Context
|
|
|
26 _ = record { get = id ; set = (\_ c -> c) }
|
|
|
27 _ : M.DataSegment Context
|
|
|
28 _ = record { get = (\m -> Meta.context m) ;
|
|
|
29 set = (\m c -> record m {context = c}) }
|
|
|
30 _ : M.DataSegment Meta
|
|
|
31 _ = record { get = id ; set = (\_ m -> m) }
|
|
|
32
|
|
|
33
|
|
|
34 liftContext : {X Y : Set} {{_ : N.DataSegment X}} {{_ : N.DataSegment Y}} -> N.CodeSegment X Y -> N.CodeSegment Context Context
|
|
|
35 liftContext {{x}} {{y}} (N.cs f) = N.cs (\c -> N.DataSegment.set y c (f (N.DataSegment.get x c)))
|
|
|
36
|
|
|
37 liftMeta : {X Y : Set} {{_ : M.DataSegment X}} {{_ : M.DataSegment Y}} -> N.CodeSegment X Y -> M.CodeSegment X Y
|
|
|
38 liftMeta (N.cs f) = M.cs f
|
|
|
39
|
|
|
40
|
|
|
41 gotoMeta : {I O : Set} {{_ : N.DataSegment I}} {{_ : N.DataSegment O}} -> M.CodeSegment Meta Meta -> N.CodeSegment I O -> Meta -> Meta
|
|
|
42 gotoMeta mCode code m = M.exec mCode (record m {next = (liftContext code)})
|
|
|
43
|
|
|
44 push : M.CodeSegment Meta Meta
|
|
|
45 push = M.cs (\m -> M.exec (liftMeta (Meta.next m)) (record m {c' = Context.c (Meta.context m)}))
|
|
|
46
|
|
|
47
|
|
|
48 record ds0 : Set where
|
|
|
49 field
|
|
|
50 a : Int
|
|
|
51 b : Int
|
|
|
52
|
|
|
53 record ds1 : Set where
|
|
|
54 field
|
|
|
55 c : Int
|
|
|
56
|
|
|
57 instance
|
|
|
58 _ : N.DataSegment ds0
|
|
|
59 _ = record { set = (\c d -> record c {a = (ds0.a d) ; b = (ds0.b d)})
|
|
|
60 ; get = (\c -> record { a = (Context.a c) ; b = (Context.b c)})}
|
|
|
61 _ : N.DataSegment ds1
|
|
|
62 _ = record { set = (\c d -> record c {c = (ds1.c d)})
|
|
|
63 ; get = (\c -> record { c = (Context.c c)})}
|
|
|
64
|
|
|
65 cs2 : N.CodeSegment ds1 ds1
|
|
|
66 cs2 = N.cs id
|
|
|
67
|
|
|
68 cs1 : N.CodeSegment ds1 ds1
|
|
|
69 cs1 = N.cs (\d -> N.goto cs2 d)
|
|
|
70
|
|
|
71 cs0 : N.CodeSegment ds0 ds1
|
|
|
72 cs0 = N.cs (\d -> N.goto cs1 (record {c = (ds0.a d) + (ds0.b d)}))
|
|
|
73
|
|
|
74
|
|
|
75 main : Meta
|
|
|
76 main = gotoMeta push cs0 (record {context = (record {a = 100 ; b = 50 ; c = 70}) ; c' = 0 ; next = (N.cs id)})
|
|
|
77 -- record {context = record {a = 100 ; b = 50 ; c = 150} ; c' = 70 ; next = (N.cs id)}
|
