Copyright	Andy Gill
License	BSD3
Maintainer	Andy Gill <andygill@ku.edu>
Stability	unstable
Portability	portable
Safe Haskell	Safe
Language	Haskell98

Text.Dot

Contents

Dot
Nodes
Edges
Showing a graph
Other combinators
Simple netlist generation

Description

This module provides a simple interface for building .dot graph files, for input into the dot and graphviz tools. It includes a monadic interface for building graphs.

Synopsis

Dot

data Dot a Source #

Instances

Monad Dot Source #
Methods (>>=) :: Dot a -> (a -> Dot b) -> Dot b # (>>) :: Dot a -> Dot b -> Dot b # return :: a -> Dot a # fail :: String -> Dot a #
Functor Dot Source #
Methods fmap :: (a -> b) -> Dot a -> Dot b # (<$) :: a -> Dot b -> Dot a #
Applicative Dot Source #
Methods pure :: a -> Dot a # (<>) :: Dot (a -> b) -> Dot a -> Dot b # liftA2 :: (a -> b -> c) -> Dot a -> Dot b -> Dot c # (>) :: Dot a -> Dot b -> Dot b # (<*) :: Dot a -> Dot b -> Dot a #

Nodes

node :: [(String, String)] -> Dot NodeId Source #

node takes a list of attributes, generates a new node, and gives a NodeId.

data NodeId Source #

Instances

Show NodeId Source #
Methods showsPrec :: Int -> NodeId -> ShowS # show :: NodeId -> String # showList :: [NodeId] -> ShowS #

userNodeId :: Int -> NodeId Source #

userNodeId allows a user to use their own (Int-based) node id's, without needing to remap them.

userNode :: NodeId -> [(String, String)] -> Dot () Source #

userNode takes a NodeId, and adds some attributes to that node.

Edges

edge :: NodeId -> NodeId -> [(String, String)] -> Dot () Source #

edge generates an edge between two NodeIds, with attributes.

edge' :: NodeId -> Maybe String -> NodeId -> Maybe String -> [(String, String)] -> Dot () Source #

edge generates an edge between two NodeIds, with optional node sub-labels, and attributes.

(.->.) :: NodeId -> NodeId -> Dot () Source #

.->. generates an edge between two NodeIds.

Showing a graph

showDot :: Dot a -> String Source #

Other combinators

scope :: Dot a -> Dot a Source #

scope groups a subgraph together; in dot these are the subgraphs inside "{" and "}".

attribute :: (String, String) -> Dot () Source #

attribute gives a attribute to the current scope.

share :: [(String, String)] -> [NodeId] -> Dot () Source #

share is when a set of nodes share specific attributes. Usually used for layout tweaking.

same :: [NodeId] -> Dot () Source #

same provides a combinator for a common pattern; a set of NodeIds with the same rank.

cluster :: Dot a -> Dot (NodeId, a) Source #

cluster builds an explicit, internally named subgraph (called cluster).

Simple netlist generation

netlistGraph Source #

Arguments

:: Ord a
=> (b -> [(String, String)])	Attributes for each node
-> (b -> [a])	Out edges leaving each node
-> [(a, b)]	The netlist
-> Dot ()

netlistGraph generates a simple graph from a netlist.