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, line 31
def initialize(graph)
  @graph = graph
  @graph.remove_vertices(@graph.vertices)
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, line 39
def tag_start(name, attrs)
  case name
    when 'edge'
      @graph.add_edge(attrs['source'], attrs['target'])
    when 'node'
      @graph.add_vertex(attrs['id'])
  end
end