blob: 158de035845b2fcfa043433b788d940d029902c7 (
plain)
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
|
module PGF.ByteCode(CodeLabel, Instr(..), ppCode, ppInstr) where
import PGF.CId
import Text.PrettyPrint
type CodeLabel = Int
data Instr
= ENTER
| EVAL_ARG_VAR {-# UNPACK #-} !Int
| EVAL_FREE_VAR {-# UNPACK #-} !Int
| CASE CId {-# UNPACK #-} !CodeLabel
| CASE_INT Int {-# UNPACK #-} !CodeLabel
| CASE_STR String {-# UNPACK #-} !CodeLabel
| CASE_FLT Double {-# UNPACK #-} !CodeLabel
| ALLOC {-# UNPACK #-} !Int
| PUT_CONSTR CId
| PUT_FUN CId
| PUT_CLOSURE {-# UNPACK #-} !CodeLabel
| PUT_INT {-# UNPACK #-} !Int
| PUT_STR String
| PUT_FLT {-# UNPACK #-} !Double
| SET_VALUE {-# UNPACK #-} !Int
| SET_ARG_VAR {-# UNPACK #-} !Int
| SET_FREE_VAR {-# UNPACK #-} !Int
| SET_PAD
| PUSH_VALUE {-# UNPACK #-} !Int
| PUSH_ARG_VAR {-# UNPACK #-} !Int
| PUSH_FREE_VAR {-# UNPACK #-} !Int
| TAIL_CALL CId
| FAIL
| UPDATE
| RET {-# UNPACK #-} !Int
ppCode :: Int -> [[Instr]] -> Doc
ppCode l [] = empty
ppCode l (is:iss) = ppLabel l <+> vcat (map ppInstr is) $$ ppCode (l+1) iss
ppInstr (ENTER ) = text "ENTER"
ppInstr (EVAL_ARG_VAR n) = text "EVAL_ARG_VAR " <+> int n
ppInstr (EVAL_FREE_VAR n) = text "EVAL_FREE_VAR" <+> int n
ppInstr (CASE id l ) = text "CASE " <+> ppCId id <+> ppLabel l
ppInstr (CASE_INT n l ) = text "CASE_INT " <+> int n <+> ppLabel l
ppInstr (CASE_STR str l ) = text "CASE_STR " <+> text (show str) <+> ppLabel l
ppInstr (CASE_FLT d l ) = text "CASE_FLT " <+> double d <+> ppLabel l
ppInstr (ALLOC n) = text "ALLOC " <+> int n
ppInstr (PUT_CONSTR id) = text "PUT_CONSTR " <+> ppCId id
ppInstr (PUT_FUN id) = text "PUT_FUN " <+> ppCId id
ppInstr (PUT_CLOSURE l) = text "PUT_CLOSURE " <+> ppLabel l
ppInstr (PUT_INT n ) = text "PUT_INT " <+> int n
ppInstr (PUT_STR str ) = text "PUT_STR " <+> text (show str)
ppInstr (PUT_FLT d ) = text "PUT_FLT " <+> double d
ppInstr (SET_VALUE n) = text "SET_VALUE " <+> int n
ppInstr (SET_ARG_VAR n) = text "SET_ARG_VAR " <+> int n
ppInstr (SET_FREE_VAR n) = text "SET_FREE_VAR " <+> int n
ppInstr (SET_PAD ) = text "SET_PAD"
ppInstr (PUSH_VALUE n) = text "PUSH_VALUE " <+> int n
ppInstr (PUSH_ARG_VAR n) = text "PUSH_ARG_VAR " <+> int n
ppInstr (PUSH_FREE_VAR n) = text "PUSH_FREE_VAR" <+> int n
ppInstr (TAIL_CALL id) = text "TAIL_CALL " <+> ppCId id
ppInstr (FAIL ) = text "FAIL"
ppInstr (UPDATE ) = text "UPDATE"
ppInstr (RET n) = text "RET " <+> int n
ppLabel l = text (let s = show l in replicate (3-length s) '0' ++ s)
|
