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module DotRender(
writeDotRun
) where
import Data.List
import Data.Maybe
import Dot
import Resolver.Log
import Resolver.PrettyPrint
import Resolver.Types
import System.IO
import Text.Printf
import Types
import qualified Data.Set as Set
inBounds :: Params -> Integer -> Bool
inBounds params n = let first = maybe 0 id (firstStep params) in
n >= first && maybe True (\max -> n < first + max) (maxSteps params)
choiceText :: LinkChoice -> String
choiceText (LinkChoice (InstallVersion ver _ _)) = "Install " ++ pp ver
choiceText (LinkChoice (BreakSoftDep d)) = "Break " ++ pp d
choiceText Unknown = "(...)"
dotChoiceLabel :: LinkChoice -> String
dotChoiceLabel lc@(LinkChoice c) = choiceText lc
dotChoiceLabel Unknown = ""
inferTargetFormat :: Params -> TargetFormat
inferTargetFormat (Params { targetFormat = fmt,
dotOutput = output }) =
case fmt of
Nothing -> PS
Just fmt' -> fmt'
cloudImage :: Params -> String
cloudImage params =
case inferTargetFormat params of
PS -> "cloud.eps"
PNG -> "cloud.png"
dotStepNode :: Params -> ProcessingStep -> Node
dotStepNode params step = node (name $ printf "step%d" (stepOrder step))
<<< set "label" (printf "Step: %d\nScore: %d\nTier: %s"
(stepOrder step)
(solScore $ stepSol step)
(show $ solTier $ stepSol step))
<<< Set.null (solBrokenDeps (stepSol step)) `thenDo`
set "style" "filled" `andAlso`
set "peripheries" "2" `andAlso`
set "fillColor" "lightgrey"
-- Generate nodes for any successors that were not processed in the
-- render.
dotUnprocessedSuccs :: Params -> ProcessingStep -> [Node]
dotUnprocessedSuccs params step = unprocessed ++ excluded
where unprocessed = [ node (name $ printf "step%dunproc%d" (stepOrder step) stepNum)
<<< set "label" (printf "Unprocessed\nScore: %d\nTier: %s"
(solScore succSol)
(show $ solTier succSol))
<<< set "style" "dashed"
<<< Set.null (solBrokenDeps (stepSol step)) `thenDo`
set "style" "dashed,filled" `andAlso`
set "peripheries" "2" `andAlso`
set "fillcolor" "lightgrey"
| ((Unprocessed { successorChoice = succChoice,
successorSolution = succSol }),
stepNum)
<- zip (stepSuccessors step) ([0..] :: [Integer]) ]
excluded = [ node (name $ printf "step%d" (stepOrder step))
<<< set "label" (printf "Step %d+\n%d nodes..." (stepOrder step) (stepBranchSize step))
<<< set "shape" "plaintext"
<<< set "image" (cloudImage params)
| (Successor { successorStep = step }) <- stepSuccessors step,
not $ inBounds params (stepOrder step) ]
-- | If the parent of the given step (or of one of its
-- backpropagations) was excluded from the render, build and return a
-- node for it.
--
-- TODO: should show links between excluded nodes, etc...that will
-- need a bit of an overhaul though.
dotExcludedIndices :: Params -> ProcessingStep -> [Integer]
dotExcludedIndices params step =
(maybeToList $ do (ParentLink {parentLinkParent = parentStep}) <- stepPredecessor step
(if inBounds params $ stepOrder parentStep
then fail "Not an excluded step."
else return $ stepOrder parentStep))
++
[ parentStepNum
| Backpropagation {
backpropagationStep =
ProcessingStep {
stepOrder = parentStepNum
} } <- stepBackpropagations step,
not $ inBounds params parentStepNum ]
dotExcludedParentNode :: Params -> Integer -> Node
dotExcludedParentNode params stepNum = node (name $ printf "step%d" stepNum)
<<< set "label" (printf "Step %d" stepNum)
<<< set "shape" "plaintext"
<<< set "image" (cloudImage params)
dotPromotions params step =
if not $ showPromotions params
then []
else [ node (name $ printf "step%dpromotion%d" (stepOrder step) promotionNum)
<<< set "label" (makeLabel promotion)
<<< set "shape" "oval"
| (promotion, promotionNum) <- zip (Set.toList $ stepPromotions step) ([0..] :: [Integer]) ]
++
[ node (name $ printf "step%dbackprop%d" (stepOrder step) backpropNum)
<<< set "label" (makeLabel $ backpropagationPromotion backprop)
<<< set "shape" "oval"
| (backprop, backpropNum) <- zip (stepBackpropagations step) ([0..] :: [Integer]) ]
where makeLabel p = if Set.size (promotionChoices p) <= 5
then printf "%s\n%s"
(show $ promotionTier p)
(concat $ intersperse "\n"
[pp c | c <- Set.toList $ promotionChoices p])
else printf "(T%s: %d choices)"
(show $ promotionTier p)
(Set.size $ promotionChoices p)
dotEdges params step = cutIncoming ++ processed ++ unprocessed ++ promotions ++ backprops
where processed = [ edge (node (name $ printf "step%d" (stepOrder step)))
(node (name $ printf "step%d" (stepOrder step')))
<<< set "label" (dotChoiceLabel succChoice)
<<< forced `thenDo`
-- This gives us an arrow drawn with two
-- parallel lines.
set "color" "black:black"
| Successor { successorStep = step',
successorChoice = succChoice,
successorForced = forced } <- stepSuccessors step ]
unprocessed = [ edge (node (name $ printf "step%d" (stepOrder step)))
(node (name $ printf "step%dunproc%d" (stepOrder step) stepNum))
<<< set "label" (dotChoiceLabel succChoice)
<<< forced `thenDo` set "color" "black:black"
| ((Unprocessed { successorChoice = succChoice,
successorForced = forced }), stepNum)
<- zip (stepSuccessors step) ([0..] :: [Integer]) ]
promotions = if (not $ showPromotions params) || (Set.null $ stepPromotions step)
then []
else [ edge (node (name $ printf "step%d" (stepOrder step)))
(node (name $ printf "step%dpromotion%d" (stepOrder step) promotionNum))
| promotionNum <- [0..((Set.size $ stepPromotions step) - 1)] ]
backprops = let attrs = set "color" "red" `andAlso`
set "style" "dashed" `andAlso`
set "constraint" "false" in
if (not $ showPromotions params) || (null $ stepBackpropagations step)
then []
-- Temporal edges to backpropagations.
else [edge (node (name $ printf "step%d" (stepOrder step)))
(node (name $ printf "step%dbackprop0" (stepOrder step)))
<<< attrs]
++
[edge (node (name $ printf "step%dbackprop%d" (stepOrder step) backpropNum))
(node (name $ printf "step%dbackprop%d" (stepOrder step) (backpropNum + 1)))
<<< attrs
| backpropNum <- [0..((length $ stepBackpropagations step) - 2)] ]
++
-- Structural edges to backpropagations.
[ edge (node (name $ printf "step%d" (stepOrder $ backpropagationStep backprop)))
(node (name $ printf "step%dbackprop%d" (stepOrder step) backpropNum))
| (backprop, backpropNum) <- zip (stepBackpropagations step) ([0..] :: [Integer]) ]
cutIncoming = [ edge (node (name $ printf "step%d" (stepOrder parentStep)))
(node (name $ printf "step%d" (stepOrder step)))
<<< set "label" (dotChoiceLabel choice)
<<< forced `thenDo` set "color" "black:black"
| ParentLink { parentLinkAction = choice,
parentLinkForced = forced,
parentLinkParent = parentStep }
<- maybeToList $ stepPredecessor step,
not $ inBounds params $ stepOrder parentStep ]
dotOrderEdges steps =
[ edge (node (name $ printf "step%d" (stepOrder step1)))
(node (name $ printf "step%d" (stepOrder step2)))
<<< set "constraint" "false"
<<< set "style" "dotted"
<<< set "color" "blue"
| (step1, step2) <- zip steps (drop 1 steps) ]
renderDot :: Params -> [ProcessingStep] -> Digraph
renderDot params steps =
let droppedSteps = maybe steps (\n -> genericDrop n steps) (firstStep params)
truncatedSteps = maybe droppedSteps (\n -> genericTake n droppedSteps) (maxSteps params) in
if null truncatedSteps
then error "No steps to render."
else let stepNodes = map (dotStepNode params) truncatedSteps
unprocessed = concat $ map (dotUnprocessedSuccs params) truncatedSteps
excludedParentIndices = concat $ map (dotExcludedIndices params) truncatedSteps
excludedParentIndicesUnique = Set.toList $ Set.fromList excludedParentIndices
excludedParents = map (dotExcludedParentNode params) excludedParentIndicesUnique
promotions = concat $ map (dotPromotions params) truncatedSteps
stepEdges = concat $ map (dotEdges params) truncatedSteps
orderEdges = dotOrderEdges truncatedSteps in
digraph (stepNodes ++ excludedParents ++
unprocessed ++ promotions) (stepEdges ++ orderEdges)
writeDotRun params steps outputFile =
do let dot = renderDot params steps
withFile outputFile WriteMode $ \h ->
hPutStrLn h (show dot)
|
