Class: Dhaka::LexerSupport::UnaryNode

Inherits:
ASTNode
  • Object
show all
Defined in:
lib/lexer/regex_grammar.rb

Direct Known Subclasses

OneOrMoreNode, ZeroOrMoreNode, ZeroOrOneNode

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from ASTNode

#accepting, #checkpoint

Constructor Details

#initialize(child) ⇒ UnaryNode

Returns a new instance of UnaryNode.



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# File 'lib/lexer/regex_grammar.rb', line 262

def initialize child
  @child = child
end

Instance Attribute Details

#child ⇒ Object (readonly)

Returns the value of attribute child.



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# File 'lib/lexer/regex_grammar.rb', line 261

def child
  @child
end

Instance Method Details

#calculate_follow_sets ⇒ Object 



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# File 'lib/lexer/regex_grammar.rb', line 284

def calculate_follow_sets
  child.calculate_follow_sets
end

#first ⇒ Object 



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# File 'lib/lexer/regex_grammar.rb', line 276

def first
  child.first
end

#last ⇒ Object 



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# File 'lib/lexer/regex_grammar.rb', line 280

def last
  child.last
end

#nullable ⇒ Object 



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# File 'lib/lexer/regex_grammar.rb', line 272

def nullable
  child.nullable
end

#to_dot(graph) ⇒ Object 



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# File 'lib/lexer/regex_grammar.rb', line 266

def to_dot(graph)
  graph.node(self, :label => label)
  graph.edge(self, child)
  child.to_dot(graph)
end