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-- |
-- Module : Verismith.Circuit.Base
-- Description : Base types for the circuit module.
-- Copyright : (c) 2019, Yann Herklotz Grave
-- License : GPL-3
-- Maintainer : yann [at] yannherklotz [dot] com
-- Stability : experimental
-- Portability : POSIX
--
-- Base types for the circuit module.
module Verismith.Circuit.Base
( Gate (..),
Circuit (..),
CNode (..),
CEdge (..),
)
where
import Data.Graph.Inductive (Gr, LEdge, LNode)
import System.Random
-- | The types for all the gates.
data Gate
= And
| Or
| Xor
deriving (Show, Eq, Enum, Bounded, Ord)
-- | Newtype for the Circuit which implements a Graph from fgl.
newtype Circuit = Circuit {getCircuit :: Gr Gate ()}
-- | Newtype for a node in the circuit, which is an 'LNode Gate'.
newtype CNode = CNode {getCNode :: LNode Gate}
-- | Newtype for a named edge which is empty, as it does not need a label.
newtype CEdge = CEdge {getCEdge :: LEdge ()}
instance Random Gate where
randomR (a, b) g =
case randomR (fromEnum a, fromEnum b) g of
(x, g') -> (toEnum x, g')
random = randomR (minBound, maxBound)
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