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{-|
Module : VeriFuzz.Circuit.Internal
Description : Internal helpers for generation.
Copyright : (c) 2018-2019, Yann Herklotz
License : BSD-3
Maintainer : ymherklotz [at] gmail [dot] com
Stability : experimental
Portability : POSIX
Internal helpers for generation.
-}
module VeriFuzz.Circuit.Internal
( fromNode
, filterGr
, only
, inputs
, outputs
)
where
import Data.Graph.Inductive (Graph, Node)
import qualified Data.Graph.Inductive as G
import qualified Data.Text as T
fromNode :: Int -> T.Text
fromNode node = T.pack $ "w" <> show node
filterGr :: (Graph gr) => gr n e -> (Node -> Bool) -> [Node]
filterGr graph f = filter f $ G.nodes graph
only
:: (Graph gr)
=> gr n e
-> (gr n e -> Node -> Int)
-> (gr n e -> Node -> Int)
-> Node
-> Bool
only graph fun1 fun2 n = fun1 graph n == 0 && fun2 graph n /= 0
inputs :: (Graph gr) => gr n e -> [Node]
inputs graph = filterGr graph $ only graph G.indeg G.outdeg
outputs :: (Graph gr) => gr n e -> [Node]
outputs graph = filterGr graph $ only graph G.outdeg G.indeg
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