blob: 0d23044d5cd68ee67781fdc748d1d9d73327dca5 (
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
|
{-|
Module : VeriFuzz.Graph.Random
Description : Code generation directly from DAG.
Copyright : (c) 2018-2019, Yann Herklotz Grave
License : BSD-3
Maintainer : ymherklotz [at] gmail [dot] com
Stability : experimental
Portability : POSIX
Define the code generation directly from the random DAG.
-}
module VeriFuzz.Graph.CodeGen
( generate
) where
import Data.Foldable (fold)
import Data.Graph.Inductive (Graph, LNode, Node, indeg, labNodes,
nodes, outdeg, pre)
import Data.Maybe (fromMaybe)
import Data.Text (Text)
import qualified Data.Text as T
import VeriFuzz.Circuit
import VeriFuzz.Internal.Gen
import VeriFuzz.Internal.Shared
toOperator :: Gate -> Text
toOperator And = " & "
toOperator Or = " | "
toOperator Xor = " ^ "
statList :: Gate -> [Node] -> Maybe Text
statList g n = toStr <$> safe tail n
where
toStr = fold . fmap ((<> toOperator g) . fromNode)
lastEl :: [Node] -> Maybe Text
lastEl n = fromNode <$> safe head n
toStmnt :: (Graph gr) => gr Gate e -> LNode Gate -> Text
toStmnt graph (n, g) =
fromMaybe T.empty $ Just " assign " <> Just (fromNode n)
<> Just " = " <> statList g nodeL <> lastEl nodeL <> Just ";\n"
where
nodeL = pre graph n
generate :: (Graph gr) => gr Gate e -> Text
generate graph =
"module generated_module(\n"
<> fold (imap " input wire " ",\n" inp)
<> T.intercalate ",\n" (imap " output wire " "" out)
<> ");\n"
<> fold (toStmnt graph <$> labNodes graph)
<> "endmodule\n\nmodule main;\n initial\n begin\n "
<> "$display(\"Hello, world\");\n $finish;\n "
<> "end\nendmodule"
where
inp = inputs graph
out = outputs graph
imap b e = fmap ((\s -> b <> s <> e) . fromNode)
|
