Maintainer	Ivan.Miljenovic@gmail.com

Data.GraphViz.Types

Description

This module defines the overall types and methods that interact with them for the GraphViz library. The specifications are based loosely upon the information available at: http://graphviz.org/doc/info/lang.html

Synopsis

Documentation

data DotGraph Source

The internal representation of a graph in Dot form.

Constructors

DotGraph
Fields strictGraph :: Bool directedGraph :: Bool graphID :: Maybe GraphID graphAttributes :: [Attribute] graphNodes :: [DotNode] graphEdges :: [DotEdge]

Instances

Eq DotGraph
Read DotGraph
Show DotGraph
Parseable DotGraph

data GraphID Source

Constructors

Str String
Num Double
QStr QuotedString
HTML URL

Instances

Eq GraphID
Read GraphID
Show GraphID
Parseable GraphID

data DotNode Source

A node in DotGraph is either a singular node, or a cluster containing nodes (or more clusters) within it. At the moment, clusters are not parsed.

Constructors

DotNode
Fields nodeID :: Int nodeAttributes :: [Attribute]
DotCluster
Fields clusterID :: String clusterAttributes :: [Attribute] clusterElems :: [DotNode]

Instances

Eq DotNode
Read DotNode
Show DotNode
Parseable DotNode

data DotEdge Source

An edge in DotGraph.

Constructors

DotEdge
Fields edgeHeadNodeID :: Int edgeTailNodeID :: Int edgeAttributes :: [Attribute] directedEdge :: Bool

Instances

Eq DotEdge
Read DotEdge
Show DotEdge
Parseable DotEdge

parseDotGraph :: Parse DotGraph Source

Parse a limited subset of the Dot language to form a DotGraph (that is, the caveats listed in Data.GraphViz.Attributes aside, Dot graphs are parsed if they match the layout of DotGraph).

setID :: GraphID -> DotGraph -> DotGraph Source

makeStrict :: DotGraph -> DotGraph Source

A strict graph disallows multiple edges.

isValidGraph :: DotGraph -> Bool Source

Check if all the Attributes are being used correctly.

invalidAttributes :: DotGraph -> ([Attribute], [(DotNode, Attribute)], [(DotEdge, Attribute)])Source

Return all those Attributes which aren't being used properly.