class RGL::MutableGraph::MutableGraphParser
Used to parse a subset of GraphML into an RGL graph implementation.
Public Class Methods
new(graph)
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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)
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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