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module Library.GraphPart (
GraphPart,
graphPart,
makeGraphPart,
nodes,
edges,
inputNode,
outputNode,
inputLab,
outputLab,
graphAdd,
graphAddList,
graphDel,
size,
addedSize,
overlap,
join
) where
import Data.Maybe
import Data.List
import Data.Map( Map )
import qualified Data.Map as Map
import Data.Graph.Inductive.Graph( Node, LNode, Edge, LEdge )
import qualified Data.Graph.Inductive.Graph as Graph
import Data.Graph.Inductive.Tree
import Library.ProofGraph
data GraphPart = GraphPart { getGraph :: Gr String (Int,Int)
, getInput :: Maybe (Node,Int)
, getOutput :: Maybe (Node,Int) }
graphPart :: [LNode String] -> [LEdge (Int,Int)] -> Maybe (Node,Int) -> Maybe (Node,Int) -> GraphPart
graphPart nodes edges =
let graph = checkDupe (Graph.mkGraph nodes edges)
in GraphPart graph
makeGraphPart :: PGraph -> Maybe (Node,Int) -> Maybe (Node,Int) -> GraphPart
makeGraphPart = GraphPart
nodes :: GraphPart -> [LNode String]
nodes = Graph.labNodes . getGraph
edges :: GraphPart -> [LEdge (Int,Int)]
edges = Graph.labEdges . getGraph
inputNode :: GraphPart -> Maybe Node
inputNode gpart = do
input <- getInput gpart
return (fst input)
outputNode :: GraphPart -> Maybe Node
outputNode gpart = do
output <- getOutput gpart
return (fst output)
inputLab :: GraphPart -> Maybe Int
inputLab gpart = do
input <- getInput gpart
return (snd input)
outputLab :: GraphPart -> Maybe Int
outputLab gpart = do
output <- getOutput gpart
return (snd output)
graphAddImp :: GraphPart -> Maybe (Node,Int) -> [(Node,Int)] -> PGraph -> PGraph
graphAddImp gpart i o graph =
let (resolved, dict) = resolveNodeClash graph (getGraph gpart)
base = (Graph.insEdges (Graph.labEdges resolved)) . (Graph.insNodes (Graph.labNodes resolved)) $ graph
inputAdded = if (isNothing i || isNothing (getInput gpart))
then base
else Graph.insEdge (fromJust (Map.lookup (fst . fromJust . getInput $ gpart) dict),
fst . fromJust $ i,
(snd . fromJust . getInput $ gpart, snd . fromJust $ i)) base
outputAdded = if (o == [] || isNothing (getOutput gpart))
then inputAdded
else let outEdge = map (\(x,y) -> (x, fromJust (Map.lookup (fst . fromJust . getOutput $ gpart) dict),
(y, snd . fromJust . getOutput $ gpart))) o
in Graph.insEdges outEdge inputAdded
graph' = outputAdded
in graph'
graphAdd :: GraphPart -> Maybe (Node,Int) -> [(Node,Int)] -> PGraph -> PGraph
graphAdd gpart i o graph =
let graph' = graphAddImp gpart i o graph
in checkDupe graph'
graphAddList :: [(GraphPart, Maybe (Node,Int), [(Node,Int)])] -> PGraph -> PGraph
graphAddList partList graph =
let graph' = foldl' (\g (x,y,z) -> graphAddImp x y z g) graph partList
in checkDupe graph'
graphDel :: GraphPart -> PGraph -> PGraph
graphDel gpart graph =
let n = map fst . nodes $ gpart
e = map (\(a,b,_) -> (a,b)) . edges $ gpart
in (Graph.delNodes n) . (Graph.delEdges e) $ graph
size :: GraphPart -> Int
size = Graph.noNodes . getGraph
addedSize :: GraphPart -> Maybe (Node,Int) -> [(Node,Int)] -> PGraph -> Int
addedSize gpart i o graph =
let oldSize = Graph.noNodes graph
newSize = Graph.noNodes (graphAdd gpart i o graph)
in newSize - oldSize
overlap :: GraphPart -> GraphPart -> Int
overlap one two =
let added = Graph.noNodes (graphAdd one Nothing [] (getGraph two))
total = Graph.noNodes (getGraph one) + Graph.noNodes (getGraph two)
in total - added
join :: GraphPart -> GraphPart -> GraphPart
join one two | (isJust (getOutput one) && isJust (getInput two)) =
let (resolved, dict) = resolveNodeClash (getGraph one) (getGraph two)
base = (Graph.insEdges (Graph.labEdges resolved)) . (Graph.insNodes (Graph.labNodes resolved)) . getGraph $ one
from = (\(x,y) -> (fromJust (Map.lookup x dict), y)) . fromJust . getInput $ two
to = fromJust . getOutput $ one
ioEdge = (fst from, fst to, (snd from, snd to))
newOutput = (\(x,y) -> (fromJust (Map.lookup x dict), y)) . fromJust . getOutput $ two
in makeGraphPart (checkDupe (Graph.insEdge ioEdge base)) (getInput one) (Just newOutput)
|
