Module: Rattler::Grammar::Metagrammar

Includes:
Parsers
Included in:
GrammarParser
Defined in:
lib/rattler/grammar/metagrammar.rb

Instance Method Summary collapse

Methods included from Parsers

define

Instance Method Details

#match_attributed ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 206

def match_attributed #:nodoc:
  memoize_lr :match_attributed!
end

#match_attributed! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 211

def match_attributed! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:attributed)) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?><)/) &&
      (r0_1 = ((r = begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>[[:lower:]])(?>(?>[[:alnum:]_])*))|(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>(?>(?>[[:upper:]])(?>(?>[[:alnum:]_])*)(?>::))*)(?>[[:upper:]])(?>(?>[[:alnum:]_])*)))(?>(?>(?>\.)(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>[[:lower:]])(?>(?>[[:alnum:]_])*))))?))/) &&
        @scanner[1]
      end) ? [r] : [])) &&
      (r0_2 = ((r = begin
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>")(?>(?>(?>\\)(?>.)|[^"])*)(?>"))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>')(?>(?>(?>\\)(?>.)|[^'])*)(?>'))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\()(?>(?>(?>\\)(?>.)|[^)])*)(?>\)))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\{)(?>(?>(?>\\)(?>.)|[^}])*)(?>\}))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\[)(?>(?>(?>\\)(?>.)|[^\]])*)(?>\]))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%<)(?>(?>(?>\\)(?>.)|[^>])*)(?>>))/) &&
          @scanner[1]
        end ||
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*/) &&
            begin
              p2 = @scanner.pos
              begin
                @scanner.skip(/%/) &&
                (r2_0 = @scanner.scan(/[[:punct:]]/)) &&
                begin
                  while begin
                    @scanner.skip(/(?>\\)(?>.)/) ||
                    begin
                      p3 = @scanner.pos
                      begin
                        @scanner.skip(/(?!#{r2_0})/) &&
                        @scanner.skip(/./) &&
                        true
                      end || begin
                        @scanner.pos = p3
                        false
                      end
                    end
                  end; end
                  true
                end &&
                @scanner.skip(/#{r2_0}/) &&
                @scanner.string[p2...(@scanner.pos)]
              end || begin
                @scanner.pos = p2
                false
              end
            end
          end || begin
            @scanner.pos = p1
            false
          end
        end
      end) ? [r] : [])) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>>)/) &&
      DispatchAction.parsed(select_captures([r0_0, r0_1, r0_2]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:attributed)) &&
      (r0_1 = begin
        @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\{))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>(?>\{)(?>(?>[^}])*)(?>\})|[^{}])*))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\}))/) &&
        @scanner[1]
      end) &&
      DirectAction.parsed(select_captures([r0_0, r0_1]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  match(:terms)
end

#match_expression ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 184

def match_expression #:nodoc:
  memoize_lr :match_expression!
end

#match_expression! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 189

def match_expression! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:expression)) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\/)/) &&
      (r0_1 = match(:attributed)) &&
      Choice.parsed(select_captures([r0_0, r0_1]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  match(:attributed)
end

#match_grammar ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 16

def match_grammar #:nodoc:
  p0 = @scanner.pos
  begin
    (r0_0 = begin
      p1 = @scanner.pos
      begin
        (r1_0 = begin
          a0 = []
          while r = begin
            @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>require)(?![[:alnum:]_])))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>(?!(?>(?>[[:blank:]])*)(?>\z|;|(?>(?>\r)?)(?>\n)|(?>\#)(?>(?>[^\n])*)))(?>.))+))(?>(?>(?>[[:blank:]])*)(?>\z|;|(?>(?>\r)?)(?>\n)|(?>\#)(?>(?>[^\n])*)))/) &&
            @scanner[1]
          end
            a0 << r
          end
          ({ :requires => select_captures(a0) })
        end) &&
        (r1_1 = ((r = begin
          begin
            p2 = @scanner.pos
            begin
              (r2_0 = begin
                @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>parser)(?![[:alnum:]_])))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>(?>(?>[[:upper:]])(?>(?>[[:alnum:]_])*)(?>::))*)(?>[[:upper:]])(?>(?>[[:alnum:]_])*)))/) &&
                @scanner[1]
              end) &&
              (r2_1 = ((r = begin
                @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?><))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>(?>(?>[[:upper:]])(?>(?>[[:alnum:]_])*)(?>::))*)(?>[[:upper:]])(?>(?>[[:alnum:]_])*)))/) &&
                @scanner[1]
              end) ? [r] : [])) &&
              @scanner.skip(/(?>(?>(?>[[:blank:]])*)(?>\z|;|(?>(?>\r)?)(?>\n)|(?>\#)(?>(?>[^\n])*)))/) &&
              (parser_decl r2_0, r2_1)
            end || begin
              @scanner.pos = p2
              false
            end
          end ||
          begin
            @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>grammar)(?![[:alnum:]_])))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>(?>(?>[[:upper:]])(?>(?>[[:alnum:]_])*)(?>::))*)(?>[[:upper:]])(?>(?>[[:alnum:]_])*)))(?>(?>(?>[[:blank:]])*)(?>\z|;|(?>(?>\r)?)(?>\n)|(?>\#)(?>(?>[^\n])*)))/) &&
            ({ :grammar_name => @scanner[1] })
          end
        end) ? [r] : [])) &&
        (r1_2 = begin
          a0 = []
          while r = begin
            @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>include)(?![[:alnum:]_])))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>(?>(?>[[:upper:]])(?>(?>[[:alnum:]_])*)(?>::))*)(?>[[:upper:]])(?>(?>[[:alnum:]_])*)))(?>(?>(?>[[:blank:]])*)(?>\z|;|(?>(?>\r)?)(?>\n)|(?>\#)(?>(?>[^\n])*)))/) &&
            @scanner[1]
          end
            a0 << r
          end
          ({ :includes => select_captures(a0) })
        end) &&
        (heading r1_0, r1_1, r1_2)
      end || begin
        @scanner.pos = p1
        false
      end
    end) &&
    (r0_1 = begin
      a0 = []
      while r = begin
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>%whitespace)(?![[:alnum:]_]))/) &&
            (r1_0 = match(:unattributed)) &&
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\{)/) &&
            (start_ws r1_0)
          end || begin
            @scanner.pos = p1
            false
          end
        end ||
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>%whitespace)(?![[:alnum:]_]))/) &&
            (r1_0 = match(:unattributed)) &&
            (set_ws r1_0)
          end || begin
            @scanner.pos = p1
            false
          end
        end ||
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>%word_character)(?![[:alnum:]_]))/) &&
            (r1_0 = match(:unattributed)) &&
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\{)/) &&
            (start_wc r1_0)
          end || begin
            @scanner.pos = p1
            false
          end
        end ||
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>%word_character)(?![[:alnum:]_]))/) &&
            (r1_0 = match(:unattributed)) &&
            (set_wc r1_0)
          end || begin
            @scanner.pos = p1
            false
          end
        end ||
        begin
          @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>%inline)(?![[:alnum:]_])))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\{))/) &&
          (start_inline)
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>%inline)(?![[:alnum:]_]))/) &&
          (set_inline)
        end ||
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?!(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>EOF)(?![[:alnum:]_])))/) &&
            (r1_0 = begin
              @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>[[:alnum:]_])+))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?><\-))/) &&
              @scanner[1]
            end) &&
            (r1_1 = match(:expression)) &&
            (rule r1_0, r1_1)
          end || begin
            @scanner.pos = p1
            false
          end
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\})/) &&
          (end_block)
        end
      end
        a0 << r
      end
      RuleSet.parsed(select_captures(a0)) unless a0.empty?
    end) &&
    @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)\z/) &&
    Grammar.parsed([r0_0, r0_1])
  end || begin
    @scanner.pos = p0
    false
  end
end

#match_labelable ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 525

def match_labelable #:nodoc:
  memoize :match_labelable!
end

#match_labelable! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 530

def match_labelable! #:nodoc:
  match(:list) ||
  match(:list_term)
end

#match_labeled ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 504

def match_labeled #:nodoc:
  memoize :match_labeled!
end

#match_labeled! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 509

def match_labeled! #:nodoc:
  p0 = @scanner.pos
  begin
    (r0_0 = begin
      @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>[[:lower:]])(?>(?>[[:alnum:]_])*)))(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>:))/) &&
      @scanner[1]
    end) &&
    (r0_1 = match(:labelable)) &&
    Label.parsed(select_captures([r0_0, r0_1]))
  end || begin
    @scanner.pos = p0
    false
  end
end

#match_list ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 536

def match_list #:nodoc:
  memoize :match_list!
end

#match_list! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 541

def match_list! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:list_term)) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\*,)/) &&
      (r0_1 = match(:list_term)) &&
      List0.parsed(select_captures([r0_0, r0_1]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:list_term)) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\+,)/) &&
      (r0_1 = match(:list_term)) &&
      List1.parsed(select_captures([r0_0, r0_1]))
    end || begin
      @scanner.pos = p0
      false
    end
  end
end

#match_list_term ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 569

def match_list_term #:nodoc:
  memoize :match_list_term!
end

#match_list_term! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 574

def match_list_term! #:nodoc:
  match(:prefixed) ||
  match(:prefixable) ||
  (fail! { "term expected" })
end

#match_prefixable ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 634

def match_prefixable #:nodoc:
  memoize :match_prefixable!
end

#match_prefixable! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 639

def match_prefixable! #:nodoc:
  match(:suffixed) ||
  match(:primary)
end

#match_prefixed ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 581

def match_prefixed #:nodoc:
  memoize :match_prefixed!
end

#match_prefixed! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 586

def match_prefixed! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>&)/) &&
      (r0_0 = match(:prefixable)) &&
      Assert.parsed(select_captures([r0_0]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    p0 = @scanner.pos
    begin
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>!)/) &&
      (r0_0 = match(:prefixable)) &&
      Disallow.parsed(select_captures([r0_0]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    p0 = @scanner.pos
    begin
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>~)/) &&
      (r0_0 = match(:prefixable)) &&
      Skip.parsed(select_captures([r0_0]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    p0 = @scanner.pos
    begin
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>@)/) &&
      (r0_0 = match(:prefixable)) &&
      Token.parsed(select_captures([r0_0]))
    end || begin
      @scanner.pos = p0
      false
    end
  end
end

#match_primary ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 687

def match_primary #:nodoc:
  memoize :match_primary!
end

#match_primary! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 692

def match_primary! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\()/) &&
      (r0_0 = match(:expression)) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\))/) &&
      r0_0
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>EOF)(?![[:alnum:]_]))/) &&
    Eof.parsed([])
  end ||
  begin
    (r = begin
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>ALNUM)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>ALPHA)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>ASCII)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>BLANK)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>CNTRL)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>DIGIT)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>GRAPH)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>LOWER)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>PRINT)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>PUNCT)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>SPACE)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>UPPER)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>XDIGIT)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>WORD)(?![[:alnum:]_]))/) &&
        @scanner[1]
      end ||
      (fail! { "posix_class expected" })
    end) && (posix_class r)
  end ||
  begin
    p0 = @scanner.pos
    begin
      @scanner.skip(/(?!(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>(?>EOF)(?![[:alnum:]_])))/) &&
      (r0_0 = begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>[[:alnum:]_])+)/) &&
        @scanner[1]
      end) &&
      @scanner.skip(/(?!(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?><\-))/) &&
      Apply.parsed([r0_0])
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    (r = begin
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>")(?>(?>(?>\\)(?>.)|[^"])*)(?>"))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>')(?>(?>(?>\\)(?>.)|[^'])*)(?>'))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\()(?>(?>(?>\\)(?>.)|[^)])*)(?>\)))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\{)(?>(?>(?>\\)(?>.)|[^}])*)(?>\}))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\[)(?>(?>(?>\\)(?>.)|[^\]])*)(?>\]))/) &&
        @scanner[1]
      end ||
      begin
        @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%<)(?>(?>(?>\\)(?>.)|[^>])*)(?>>))/) &&
        @scanner[1]
      end ||
      begin
        p0 = @scanner.pos
        begin
          @scanner.skip(/(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*/) &&
          begin
            p1 = @scanner.pos
            begin
              @scanner.skip(/%/) &&
              (r1_0 = @scanner.scan(/[[:punct:]]/)) &&
              begin
                while begin
                  @scanner.skip(/(?>\\)(?>.)/) ||
                  begin
                    p2 = @scanner.pos
                    begin
                      @scanner.skip(/(?!#{r1_0})/) &&
                      @scanner.skip(/./) &&
                      true
                    end || begin
                      @scanner.pos = p2
                      false
                    end
                  end
                end; end
                true
              end &&
              @scanner.skip(/#{r1_0}/) &&
              @scanner.string[p1...(@scanner.pos)]
            end || begin
              @scanner.pos = p1
              false
            end
          end
        end || begin
          @scanner.pos = p0
          false
        end
      end
    end) && (literal r)
  end ||
  begin
    @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>`)(?>(?>(?>\\)(?>.)|[^`])*)(?>`))/) &&
    (word_literal @scanner[1])
  end ||
  begin
    @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>\[)(?>(?>(?!\])(?>(?>\[:)(?>(?>alnum)(?![[:alnum:]_])|(?>alpha)(?![[:alnum:]_])|(?>ascii)(?![[:alnum:]_])|(?>blank)(?![[:alnum:]_])|(?>cntrl)(?![[:alnum:]_])|(?>digit)(?![[:alnum:]_])|(?>graph)(?![[:alnum:]_])|(?>lower)(?![[:alnum:]_])|(?>print)(?![[:alnum:]_])|(?>punct)(?![[:alnum:]_])|(?>space)(?![[:alnum:]_])|(?>upper)(?![[:alnum:]_])|(?>xdigit)(?![[:alnum:]_]))(?>:\])|(?>(?>\\)(?>[0-3])(?>[0-7])(?>[0-7])|(?>\\x)(?>[[:xdigit:]])(?>[[:xdigit:]])|(?>\\)(?>.)|[^\\\]])(?>(?>(?>\-)(?>(?>\\)(?>[0-3])(?>[0-7])(?>[0-7])|(?>\\x)(?>[[:xdigit:]])(?>[[:xdigit:]])|(?>\\)(?>.)|[^\\\]]))?)))+)(?>\]))/) &&
    (char_class @scanner[1])
  end ||
  begin
    @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>\$)(?>[[:lower:]])(?>(?>[[:alnum:]_])*))/) &&
    BackReference.parsed([@scanner[1]])
  end ||
  begin
    @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\.)/) &&
    (Match[/./])
  end ||
  (fail! { "atom expected" })
end

#match_suffixed ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 645

def match_suffixed #:nodoc:
  memoize :match_suffixed!
end

#match_suffixed! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 650

def match_suffixed! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:primary)) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\?)/) &&
      Optional.parsed(select_captures([r0_0]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:primary)) &&
      @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\*))(?!(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>,))/) &&
      ZeroOrMore.parsed(select_captures([r0_0]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:primary)) &&
      @scanner.skip(/(?>(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\+))(?!(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>,))/) &&
      OneOrMore.parsed(select_captures([r0_0]))
    end || begin
      @scanner.pos = p0
      false
    end
  end
end

#match_term ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 331

def match_term #:nodoc:
  memoize :match_term!
end

#match_term! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 336

def match_term! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = begin
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>fail)(?![[:alnum:]_]))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>fail_rule)(?![[:alnum:]_]))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>fail_parse)(?![[:alnum:]_]))/) &&
          @scanner[1]
        end
      end) &&
      (r0_1 = begin
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\()/) &&
            (r1_0 = begin
              begin
                @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>")(?>(?>(?>\\)(?>.)|[^"])*)(?>"))/) &&
                @scanner[1]
              end ||
              begin
                @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>')(?>(?>(?>\\)(?>.)|[^'])*)(?>'))/) &&
                @scanner[1]
              end ||
              begin
                @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\()(?>(?>(?>\\)(?>.)|[^)])*)(?>\)))/) &&
                @scanner[1]
              end ||
              begin
                @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\{)(?>(?>(?>\\)(?>.)|[^}])*)(?>\}))/) &&
                @scanner[1]
              end ||
              begin
                @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\[)(?>(?>(?>\\)(?>.)|[^\]])*)(?>\]))/) &&
                @scanner[1]
              end ||
              begin
                @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%<)(?>(?>(?>\\)(?>.)|[^>])*)(?>>))/) &&
                @scanner[1]
              end ||
              begin
                p2 = @scanner.pos
                begin
                  @scanner.skip(/(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*/) &&
                  begin
                    p3 = @scanner.pos
                    begin
                      @scanner.skip(/%/) &&
                      (r3_0 = @scanner.scan(/[[:punct:]]/)) &&
                      begin
                        while begin
                          @scanner.skip(/(?>\\)(?>.)/) ||
                          begin
                            p4 = @scanner.pos
                            begin
                              @scanner.skip(/(?!#{r3_0})/) &&
                              @scanner.skip(/./) &&
                              true
                            end || begin
                              @scanner.pos = p4
                              false
                            end
                          end
                        end; end
                        true
                      end &&
                      @scanner.skip(/#{r3_0}/) &&
                      @scanner.string[p3...(@scanner.pos)]
                    end || begin
                      @scanner.pos = p3
                      false
                    end
                  end
                end || begin
                  @scanner.pos = p2
                  false
                end
              end
            end) &&
            @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\))/) &&
            r1_0
          end || begin
            @scanner.pos = p1
            false
          end
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>")(?>(?>(?>\\)(?>.)|[^"])*)(?>"))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>')(?>(?>(?>\\)(?>.)|[^'])*)(?>'))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\()(?>(?>(?>\\)(?>.)|[^)])*)(?>\)))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\{)(?>(?>(?>\\)(?>.)|[^}])*)(?>\}))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%\[)(?>(?>(?>\\)(?>.)|[^\]])*)(?>\]))/) &&
          @scanner[1]
        end ||
        begin
          @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)((?>%<)(?>(?>(?>\\)(?>.)|[^>])*)(?>>))/) &&
          @scanner[1]
        end ||
        begin
          p1 = @scanner.pos
          begin
            @scanner.skip(/(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*/) &&
            begin
              p2 = @scanner.pos
              begin
                @scanner.skip(/%/) &&
                (r2_0 = @scanner.scan(/[[:punct:]]/)) &&
                begin
                  while begin
                    @scanner.skip(/(?>\\)(?>.)/) ||
                    begin
                      p3 = @scanner.pos
                      begin
                        @scanner.skip(/(?!#{r2_0})/) &&
                        @scanner.skip(/./) &&
                        true
                      end || begin
                        @scanner.pos = p3
                        false
                      end
                    end
                  end; end
                  true
                end &&
                @scanner.skip(/#{r2_0}/) &&
                @scanner.string[p2...(@scanner.pos)]
              end || begin
                @scanner.pos = p2
                false
              end
            end
          end || begin
            @scanner.pos = p1
            false
          end
        end
      end) &&
      Fail.parsed([r0_0, r0_1])
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  match(:labeled) ||
  match(:labelable)
end

#match_terms ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 310

def match_terms #:nodoc:
  memoize_lr :match_terms!
end

#match_terms! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 315

def match_terms! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:terms)) &&
      (r0_1 = match(:term)) &&
      Sequence.parsed(select_captures([r0_0, r0_1]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  match(:term)
end

#match_unattributed ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 162

def match_unattributed #:nodoc:
  memoize_lr :match_unattributed!
end

#match_unattributed! ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 167

def match_unattributed! #:nodoc:
  begin
    p0 = @scanner.pos
    begin
      (r0_0 = match(:unattributed)) &&
      @scanner.skip(/(?>(?>(?>[[:space:]])+|(?>\#)(?>(?>[^\n])*))*)(?>\/)/) &&
      (r0_1 = match(:terms)) &&
      Choice.parsed(select_captures([r0_0, r0_1]))
    end || begin
      @scanner.pos = p0
      false
    end
  end ||
  match(:terms)
end

#start_rule ⇒ Object 



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# File 'lib/rattler/grammar/metagrammar.rb', line 11

def start_rule #:nodoc:
  :grammar
end