Class: Rley::GFG::StartVertex

Inherits:

NonTerminalVertex

• Object
• Vertex
• NonTerminalVertex
• Rley::GFG::StartVertex

Defined in:

lib/rley/gfg/start_vertex.rb

Overview

TODO: change definition. Represents a specialized vertex in a grammar flow graph that is associated to a given non-terminal symbol. Responsibilities (in addition to inherited ones):

• Know its related non-terminal symbol

Instance Attribute Summary

Attributes inherited from NonTerminalVertex

#non_terminal

Attributes inherited from Vertex

#edges

Instance Method Summary

• #initialize(aNonTerminal) ⇒ StartVertex constructor

  A new instance of StartVertex.

• #label ⇒ String

Methods inherited from Vertex

#add_edge, #complete?, #inspect, #next_symbol, #prev_symbol, #selfie

Constructor Details

#initialize(aNonTerminal) ⇒ StartVertex

Returns a new instance of StartVertex.

# File 'lib/rley/gfg/start_vertex.rb', line 13

def initialize(aNonTerminal)
  super(aNonTerminal)
end

Instance Method Details

#label ⇒ String

Returns:

• (String)

# File 'lib/rley/gfg/start_vertex.rb', line 18

def label()
  return ".#{non_terminal}"
end