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Class: Racc::Item

Relationships & Source Files
Inherits: Object
Defined in: lib/racc/state.rb

Overview

LALR item. A set of rule and its lookahead tokens.

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(rule, la) ⇒ Item

[ GitHub ] 

  


# File 'lib/racc/state.rb', line 792



def initialize(rule, la)
  @rule = rule
  @la  = la
end


  







Instance Attribute Details



  

    #la   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/racc/state.rb', line 798



attr_reader :la


  








  

    #rule   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/racc/state.rb', line 797



attr_reader :rule


  







Instance Method Details



  

    #each_la(tbl)  
  

  [ GitHub ]


  

  


# File 'lib/racc/state.rb', line 800



def each_la(tbl)
  la = @la
  0.upto(la.size - 1) do |i|
    (0..7).each do |ii|
      if la[idx = i * 8 + ii] == 1
        yield tbl[idx]
      end
    end
  end
end