Class: CooCoo::Dot::Writer

Inherits:
Object show all
Defined in:
lib/coo-coo/dot.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Writer

Returns a new instance of Writer.



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# File 'lib/coo-coo/dot.rb', line 71

def initialize
end

Instance Method Details

#indent(size) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 92

def indent(size)
  "  " * size
end

#start_block(kind, depth) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 102

def start_block(kind, depth)
  [ indent(depth) + "#{kind} {",
    *yield(depth + 1),
    indent(depth) + "}"
  ]
end

#write(graph, io) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 74

def write(graph, io)
  io.write(write_graph(graph).join("\n"))
  self
end

#write_edges(edges, depth) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 115

def write_edges(edges, depth)
  edges.collect do |edge|
    nodes = edge.nodes.join(" -> ")
    indent(depth) + "#{nodes}[#{write_options(edge.options)}];"
  end
end

#write_graph(g, depth = 0) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 79

def write_graph(g, depth = 0)
  start_block("#{g.kind}", depth) do |d|
    lines = []
    lines += write_graph_options(g, d)
    g.blocks.each do |kid|
      lines += write_graph(kid, d)
    end
    lines += write_nodes(g.nodes, d)
    lines += write_edges(g.edges, d)
    lines
  end
end

#write_graph_options(graph, depth) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 96

def write_graph_options(graph, depth)
  graph.options.collect do |key, value|
    indent(depth) + "#{key}=\"#{value}\";"
  end
end

#write_nodes(nodes, depth) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 109

def write_nodes(nodes, depth)
  nodes.collect do |node|
    indent(depth) + "#{node.name}[#{write_options(node.options)}];"
  end
end

#write_options(options) ⇒ Object 



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# File 'lib/coo-coo/dot.rb', line 122

def write_options(options)
  options.collect do |key, value|
    "#{key}=\"#{value}\""
  end.join(",")
end