class RGL::MutableGraph::MutableGraphParser

Used to parse a subset of GraphML into an RGL graph implementation.

Public Class Methods

new(graph) click to toggle source

First resets graph to be empty and stores a reference for use with tag_start.

   # File lib/rgl/graphxml.rb
31 def initialize(graph)
32   @graph = graph
33   @graph.remove_vertices(@graph.vertices)
34 end

Public Instance Methods

tag_start(name, attrs) click to toggle source

Processes incoming edge and node elements from GraphML in order to populate the graph given to new.

   # File lib/rgl/graphxml.rb
39 def tag_start(name, attrs)
40   case name
41     when 'edge'
42       @graph.add_edge(attrs['source'], attrs['target'])
43     when 'node'
44       @graph.add_vertex(attrs['id'])
45   end
46 end