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{-|
Module : VeriFuzz.Internal.Gen
Description : Internal helpers for generation.
Copyright : (c) 2018-2019, Yann Herklotz Grave
License : BSD-3
Maintainer : ymherklotz [at] gmail [dot] com
Stability : experimental
Portability : POSIX
Internal helpers for generation.
-}
module VeriFuzz.Internal.Gen 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
|
