Class: GraphViz::Parser::Edge

Inherits:
Treetop::Runtime::SyntaxNode
  • Object
show all
Defined in:
lib/graphviz/parser.rb

Instance Method Summary collapse

Instance Method Details

#create_edge(one, two, edge_options, context) ⇒ Object 



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# File 'lib/graphviz/parser.rb', line 142

def create_edge( one, two, edge_options, context )
  # Create edge
  edge = context.graph.add_edge( one, two )
  
  # Add global options
  context.options[:edge].each do |k, v|
    edge[k] = v
  end
  
  # Add custom options
  edge_options.each do |k, v|
    edge[k] = v
  end
  
  # Save edge
  context.edges << edge
end

#create_node(name, context) ⇒ Object 



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# File 'lib/graphviz/parser.rb', line 128

def create_node( name, context )
  # puts "  NEED TO CREATE NODE : #{name}"
  # Create the node
  node = context.graph.add_node( name )
  
  # Add global options
  context.options[:node].each do |k, v|
    node[k] = v
  end
  
  # Save node
  context.nodes[name] = node
end

#eval(context) ⇒ Object 



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# File 'lib/graphviz/parser.rb', line 160

def eval( context )
  one_name = node_one.text_value.gsub( /"/, "" )
  two_name = node_two.text_value.gsub( /"/, "" )
  # puts "EDGE"
  # puts "NODE ONE = #{one_name}"
  # puts "NODE TWO = #{two_name}"
  # puts "OPTIONS = "
  
  # Get or create node one
  one = context.nodes[one_name] || create_node( one_name, context )
    
  # Get or create node two
  two = context.nodes[two_name] || create_node( two_name, context )
  
  # Get options 
  edge_options = {}
  edge_options = options.eval() unless options.terminal?
  
  # Create edge
  create_edge( one, two, edge_options, context )
  
  last_node = two
  other_nodes.elements.each do |e|
    new_node_name = e.next_node.text_value.gsub( /"/, "" )
    # puts "OTHER NODE : #{new_node_name}"
    
    new_node = context.nodes[new_node_name] || create_node( new_node_name, context )
    create_edge( last_node, new_node, edge_options, context )
    
    last_node = new_node
  end
end