# Autogenerated from a Treetop grammar. Edits may be lost.


# Treetop (http://treetop.rubyforge.org/) grammar for determining package
# definition versions.

require 'treetop'

require 'fig/grammar/base'
require 'fig/grammar/version'

module Fig
  module Grammar
    module VersionIdentification
      include Treetop::Runtime

      def root
        @root ||= :everything
      end

      include Fig::Grammar::Base

      include Fig::Grammar::Version

      module Everything0
        def grammar_version
          elements[1]
        end

      end

      module Everything1
        def get_grammar_version(build_state)
          return if not grammar_version
          return if grammar_version.text_value.empty?

          return grammar_version.to_package_statement(build_state)
        end
      end

      def _nt_everything
        start_index = index
        if node_cache[:everything].has_key?(index)
          cached = node_cache[:everything][index]
          if cached
            cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
            @index = cached.interval.end
          end
          return cached
        end

        i0, s0 = index, []
        s1, i1 = [], index
        loop do
          r2 = _nt_ws_or_comment
          if r2
            s1 << r2
          else
            break
          end
        end
        r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
        s0 << r1
        if r1
          r4 = _nt_grammar_version
          if r4
            r3 = r4
          else
            r3 = instantiate_node(SyntaxNode,input, index...index)
          end
          s0 << r3
          if r3
            s5, i5 = [], index
            loop do
              if index < input_length
                r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
                @index += 1
              else
                terminal_parse_failure("any character")
                r6 = nil
              end
              if r6
                s5 << r6
              else
                break
              end
            end
            r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
            s0 << r5
          end
        end
        if s0.last
          r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
          r0.extend(Everything0)
          r0.extend(Everything1)
        else
          @index = i0
          r0 = nil
        end

        node_cache[:everything][start_index] = r0

        r0
      end

    end

    class VersionIdentificationParser < Treetop::Runtime::CompiledParser
      include VersionIdentification
    end

  end
end