module Mm2ep
  module Depend
    class Parser < Rly::Yacc

      rule 'statement : expr' do |st, e|
        st.value = e.value
      end

      rule 'expr : NOT_OP SPACE expr' do |ex, l, s, e|
        ex.value = "#{l.value} #{s.value} #{e.value}"
      end

      rule 'expr : expr SPACE AND_OP SPACE expr' do |ex, l, s, e, sp, r|
        ex.value = "#{l.value} #{s.value} #{e.value} #{sp.value} #{r.value}"
      end

      rule 'expr : expr SPACE OR_OP SPACE expr' do |ex, l, s, e, sp, r|
        ex.value = "#{l.value} #{s.value} #{e.value} #{sp.value} #{r.value}"
      end
      rule 'expr : L_PAR SPACE expr SPACE R_PAR' do |ex, l, s, e, sp, r|
        ex.value = "#{l.value} #{s.value} #{e.value} #{sp.value} #{r.value}"
      end

      rule 'expr : VAR SPACE EQ_OP SPACE F_BOOL' do |ex, v, s, eq, _, n|
        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
      end

      rule 'expr : VAR SPACE EQ_OP SPACE T_BOOL' do |ex, v, s, eq, _, n|
        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
      end

      rule 'expr : VAR SPACE EQ_OP SPACE STRING' do |ex, v, s, eq, _, n|
        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
      end

      rule 'expr : VAR SPACE EQ_OP SPACE NUMBER' do |ex, v, s, eq, _, n|
        ex.value = "#{v.value} #{s.value} #{eq.value} #{s.value} #{n.value}"
      end

      # lexer do
      #
      # end
      #
      # def initialize
      #   @tokens = []
      # end
      #
      # def parse s
      #   s = s.split(' ')
      #   s.each_with_index do |element, idx|
      #     TOKEN.each do |token, regex|
      #       next if element.sub!(regex, '').nil?
      #       @tokens << token
      #       break if element.nil?
      #     end
      #     @tokens <<'SPACE' unless idx == s.length-1
      #   end
      #   puts @tokens
      # end # def

    end # class
  end # module
end # module