Module: Cucumber::Parser::Feature

Includes:
Treetop::Runtime
Included in:
FeatureParser
Defined in:
lib/cucumber/parser/feature.rb

Overview

TIP: When you hack on the grammar, just delete feature.rb in this directory. Also make sure you have uninstalled all cucumber gems (don’t forget xxx-cucumber github gems).

Treetop will then generate the parser in-memory. When you’re happy, just generate the rb file with tt feature.tt

Defined Under Namespace

Modules: Background0, Background1, ClosePyString0, ClosePyString1, Comment0, Comment1, CommentLine0, Examples0, Examples1, ExamplesSections0, FeatureElements0, FeatureSub0, FeatureSub1, FeatureSub2, LineToEol0, LinesToKeyword0, LinesToKeyword1, LinesToKeyword2, OpenPyString0, OpenPyString1, PyString0, PyString1, PyString2, ReservedWordsAndSymbols0, Scenario0, Scenario1, ScenarioOutline0, ScenarioOutline1, Step0, Step1, Steps0, Tag0, Tags0, Tags1, Tags2

Instance Method Summary collapse

Instance Method Details

#_nt_background ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 518

def _nt_background
  start_index = index
  if node_cache[:background].has_key?(index)
    cached = node_cache[:background][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_comment
  s0 << r1
  if r1
    r2 = _nt_white
    s0 << r2
    if r2
      r3 = _nt_background_keyword
      s0 << r3
      if r3
        s4, i4 = [], index
        loop do
          r5 = _nt_space
          if r5
            s4 << r5
          else
            break
          end
        end
        r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
        s0 << r4
        if r4
          r7 = _nt_lines_to_keyword
          if r7
            r6 = r7
          else
            r6 = instantiate_node(SyntaxNode,input, index...index)
          end
          s0 << r6
          if r6
            i8 = index
            s9, i9 = [], index
            loop do
              r10 = _nt_eol
              if r10
                s9 << r10
              else
                break
              end
            end
            if s9.empty?
              self.index = i9
              r9 = nil
            else
              r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
            end
            if r9
              r8 = r9
            else
              r11 = _nt_eof
              if r11
                r8 = r11
              else
                self.index = i8
                r8 = nil
              end
            end
            s0 << r8
            if r8
              r12 = _nt_steps
              s0 << r12
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Background0)
    r0.extend(Background1)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:background][start_index] = r0

  return r0
end

#_nt_close_py_string ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1719

def _nt_close_py_string
  start_index = index
  if node_cache[:close_py_string].has_key?(index)
    cached = node_cache[:close_py_string][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_eol
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      r3 = _nt_space
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
    if r2
      if input.index('"""', index) == index
        r4 = instantiate_node(SyntaxNode,input, index...(index + 3))
        @index += 3
      else
        terminal_parse_failure('"""')
        r4 = nil
      end
      s0 << r4
      if r4
        r5 = _nt_white
        s0 << r5
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(ClosePyString0)
    r0.extend(ClosePyString1)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:close_py_string][start_index] = r0

  return r0
end

#_nt_comment ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 387

def _nt_comment
  start_index = index
  if node_cache[:comment].has_key?(index)
    cached = node_cache[:comment][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    i1, s1 = index, []
    r2 = _nt_comment_line
    s1 << r2
    if r2
      r3 = _nt_white
      s1 << r3
    end
    if s1.last
      r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
      r1.extend(Comment0)
    else
      self.index = i1
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  r0.extend(Comment1)

  node_cache[:comment][start_index] = r0

  return r0
end

#_nt_comment_line ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 431

def _nt_comment_line
  start_index = index
  if node_cache[:comment_line].has_key?(index)
    cached = node_cache[:comment_line][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  if input.index('#', index) == index
    r1 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure('#')
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_line_to_eol
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(CommentLine0)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:comment_line][start_index] = r0

  return r0
end

#_nt_examples ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1205

def _nt_examples
  start_index = index
  if node_cache[:examples].has_key?(index)
    cached = node_cache[:examples][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  s1, i1 = [], index
  loop do
    r2 = _nt_space
    if r2
      s1 << r2
    else
      break
    end
  end
  r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
  s0 << r1
  if r1
    r3 = _nt_examples_keyword
    s0 << r3
    if r3
      s4, i4 = [], index
      loop do
        r5 = _nt_space
        if r5
          s4 << r5
        else
          break
        end
      end
      r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
      s0 << r4
      if r4
        r7 = _nt_lines_to_keyword
        if r7
          r6 = r7
        else
          r6 = instantiate_node(SyntaxNode,input, index...index)
        end
        s0 << r6
        if r6
          r8 = _nt_eol
          s0 << r8
          if r8
            r9 = _nt_table
            s0 << r9
            if r9
              r10 = _nt_white
              s0 << r10
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Examples0)
    r0.extend(Examples1)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:examples][start_index] = r0

  return r0
end

#_nt_examples_sections ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1131

def _nt_examples_sections
  start_index = index
  if node_cache[:examples_sections].has_key?(index)
    cached = node_cache[:examples_sections][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    r1 = _nt_examples
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  r0.extend(ExamplesSections0)

  node_cache[:examples_sections][start_index] = r0

  return r0
end

#_nt_feature_elements ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 621

def _nt_feature_elements
  start_index = index
  if node_cache[:feature_elements].has_key?(index)
    cached = node_cache[:feature_elements][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    i1 = index
    r2 = _nt_scenario
    if r2
      r1 = r2
    else
      r3 = _nt_scenario_outline
      if r3
        r1 = r3
      else
        self.index = i1
        r1 = nil
      end
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  r0.extend(FeatureElements0)

  node_cache[:feature_elements][start_index] = r0

  return r0
end

#_nt_feature_sub ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 77

def _nt_feature_sub
  start_index = index
  if node_cache[:feature_sub].has_key?(index)
    cached = node_cache[:feature_sub][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_white
  s0 << r1
  if r1
    r2 = _nt_comment
    s0 << r2
    if r2
      r3 = _nt_white
      s0 << r3
      if r3
        r4 = _nt_tags
        s0 << r4
        if r4
          r5 = _nt_white
          s0 << r5
          if r5
            s6, i6 = [], index
            loop do
              i7, s7 = index, []
              i8 = index
              i9 = index
              r10 = _nt_scenario_outline
              if r10
                r9 = r10
              else
                r11 = _nt_scenario
                if r11
                  r9 = r11
                else
                  r12 = _nt_background
                  if r12
                    r9 = r12
                  else
                    self.index = i9
                    r9 = nil
                  end
                end
              end
              if r9
                r8 = nil
              else
                self.index = i8
                r8 = instantiate_node(SyntaxNode,input, index...index)
              end
              s7 << r8
              if r8
                if index < input_length
                  r13 = instantiate_node(SyntaxNode,input, index...(index + 1))
                  @index += 1
                else
                  terminal_parse_failure("any character")
                  r13 = nil
                end
                s7 << r13
              end
              if s7.last
                r7 = instantiate_node(SyntaxNode,input, i7...index, s7)
                r7.extend(FeatureSub0)
              else
                self.index = i7
                r7 = nil
              end
              if r7
                s6 << r7
              else
                break
              end
            end
            r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
            s0 << r6
            if r6
              r15 = _nt_background
              if r15
                r14 = r15
              else
                r14 = instantiate_node(SyntaxNode,input, index...index)
              end
              s0 << r14
              if r14
                r16 = _nt_feature_elements
                s0 << r16
                if r16
                  r18 = _nt_comment
                  if r18
                    r17 = r18
                  else
                    r17 = instantiate_node(SyntaxNode,input, index...index)
                  end
                  s0 << r17
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(FeatureSub1)
    r0.extend(FeatureSub2)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:feature_sub][start_index] = r0

  return r0
end

#_nt_line_to_eol ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1307

def _nt_line_to_eol
  start_index = index
  if node_cache[:line_to_eol].has_key?(index)
    cached = node_cache[:line_to_eol][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    i1, s1 = index, []
    i2 = index
    r3 = _nt_eol
    if r3
      r2 = nil
    else
      self.index = i2
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s1 << r2
    if r2
      if index < input_length
        r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
        @index += 1
      else
        terminal_parse_failure("any character")
        r4 = nil
      end
      s1 << r4
    end
    if s1.last
      r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
      r1.extend(LineToEol0)
    else
      self.index = i1
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)

  node_cache[:line_to_eol][start_index] = r0

  return r0
end

#_nt_lines_to_keyword ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1376

def _nt_lines_to_keyword
  start_index = index
  if node_cache[:lines_to_keyword].has_key?(index)
    cached = node_cache[:lines_to_keyword][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    i1, s1 = index, []
    i2 = index
    i3, s3 = index, []
    r4 = _nt_eol
    s3 << r4
    if r4
      s5, i5 = [], index
      loop do
        r6 = _nt_space
        if r6
          s5 << r6
        else
          break
        end
      end
      r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
      s3 << r5
      if r5
        r7 = _nt_reserved_words_and_symbols
        s3 << r7
      end
    end
    if s3.last
      r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
      r3.extend(LinesToKeyword0)
    else
      self.index = i3
      r3 = nil
    end
    if r3
      r2 = nil
    else
      self.index = i2
      r2 = instantiate_node(SyntaxNode,input, index...index)
    end
    s1 << r2
    if r2
      if index < input_length
        r8 = instantiate_node(SyntaxNode,input, index...(index + 1))
        @index += 1
      else
        terminal_parse_failure("any character")
        r8 = nil
      end
      s1 << r8
    end
    if s1.last
      r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
      r1.extend(LinesToKeyword1)
    else
      self.index = i1
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  r0.extend(LinesToKeyword2)

  node_cache[:lines_to_keyword][start_index] = r0

  return r0
end

#_nt_multiline_arg ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1277

def _nt_multiline_arg
  start_index = index
  if node_cache[:multiline_arg].has_key?(index)
    cached = node_cache[:multiline_arg][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0 = index
  r1 = _nt_table
  if r1
    r0 = r1
  else
    r2 = _nt_py_string
    if r2
      r0 = r2
    else
      self.index = i0
      r0 = nil
    end
  end

  node_cache[:multiline_arg][start_index] = r0

  return r0
end

#_nt_open_py_string ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1638

def _nt_open_py_string
  start_index = index
  if node_cache[:open_py_string].has_key?(index)
    cached = node_cache[:open_py_string][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  s1, i1 = [], index
  loop do
    r2 = _nt_space
    if r2
      s1 << r2
    else
      break
    end
  end
  r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
  s0 << r1
  if r1
    if input.index('"""', index) == index
      r3 = instantiate_node(SyntaxNode,input, index...(index + 3))
      @index += 3
    else
      terminal_parse_failure('"""')
      r3 = nil
    end
    s0 << r3
    if r3
      s4, i4 = [], index
      loop do
        r5 = _nt_space
        if r5
          s4 << r5
        else
          break
        end
      end
      r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
      s0 << r4
      if r4
        r6 = _nt_eol
        s0 << r6
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(OpenPyString0)
    r0.extend(OpenPyString1)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:open_py_string][start_index] = r0

  return r0
end

#_nt_py_string ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1550

def _nt_py_string
  start_index = index
  if node_cache[:py_string].has_key?(index)
    cached = node_cache[:py_string][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_open_py_string
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      i3, s3 = index, []
      i4 = index
      r5 = _nt_close_py_string
      if r5
        r4 = nil
      else
        self.index = i4
        r4 = instantiate_node(SyntaxNode,input, index...index)
      end
      s3 << r4
      if r4
        if index < input_length
          r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
          @index += 1
        else
          terminal_parse_failure("any character")
          r6 = nil
        end
        s3 << r6
      end
      if s3.last
        r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
        r3.extend(PyString0)
      else
        self.index = i3
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
    if r2
      r7 = _nt_close_py_string
      s0 << r7
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(PyString1)
    r0.extend(PyString2)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:py_string][start_index] = r0

  return r0
end

#_nt_reserved_words_and_symbols ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1463

def _nt_reserved_words_and_symbols
  start_index = index
  if node_cache[:reserved_words_and_symbols].has_key?(index)
    cached = node_cache[:reserved_words_and_symbols][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0 = index
  i1, s1 = index, []
  r2 = _nt_step_keyword
  s1 << r2
  if r2
    r3 = _nt_keyword_space
    s1 << r3
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(ReservedWordsAndSymbols0)
  else
    self.index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    r4 = _nt_scenario_keyword
    if r4
      r0 = r4
    else
      r5 = _nt_scenario_outline_keyword
      if r5
        r0 = r5
      else
        r6 = _nt_table
        if r6
          r0 = r6
        else
          r7 = _nt_tag
          if r7
            r0 = r7
          else
            r8 = _nt_comment_line
            if r8
              r0 = r8
            else
              self.index = i0
              r0 = nil
            end
          end
        end
      end
    end
  end

  node_cache[:reserved_words_and_symbols][start_index] = r0

  return r0
end

#_nt_scenario ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 726

def _nt_scenario
  start_index = index
  if node_cache[:scenario].has_key?(index)
    cached = node_cache[:scenario][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_comment
  s0 << r1
  if r1
    r2 = _nt_tags
    s0 << r2
    if r2
      r3 = _nt_white
      s0 << r3
      if r3
        r4 = _nt_scenario_keyword
        s0 << r4
        if r4
          s5, i5 = [], index
          loop do
            r6 = _nt_space
            if r6
              s5 << r6
            else
              break
            end
          end
          r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
          s0 << r5
          if r5
            r7 = _nt_lines_to_keyword
            s0 << r7
            if r7
              r8 = _nt_white
              s0 << r8
              if r8
                r9 = _nt_steps
                s0 << r9
                if r9
                  r10 = _nt_white
                  s0 << r10
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Scenario0)
    r0.extend(Scenario1)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:scenario][start_index] = r0

  return r0
end

#_nt_scenario_outline ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 874

def _nt_scenario_outline
  start_index = index
  if node_cache[:scenario_outline].has_key?(index)
    cached = node_cache[:scenario_outline][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_comment
  s0 << r1
  if r1
    r2 = _nt_tags
    s0 << r2
    if r2
      r3 = _nt_white
      s0 << r3
      if r3
        r4 = _nt_scenario_outline_keyword
        s0 << r4
        if r4
          s5, i5 = [], index
          loop do
            r6 = _nt_space
            if r6
              s5 << r6
            else
              break
            end
          end
          r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
          s0 << r5
          if r5
            r7 = _nt_lines_to_keyword
            s0 << r7
            if r7
              r8 = _nt_white
              s0 << r8
              if r8
                r9 = _nt_steps
                s0 << r9
                if r9
                  r10 = _nt_examples_sections
                  s0 << r10
                  if r10
                    r11 = _nt_white
                    s0 << r11
                  end
                end
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(ScenarioOutline0)
    r0.extend(ScenarioOutline1)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:scenario_outline][start_index] = r0

  return r0
end

#_nt_step ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1020

def _nt_step
  start_index = index
  if node_cache[:step].has_key?(index)
    cached = node_cache[:step][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_comment
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      r3 = _nt_space
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
    if r2
      r4 = _nt_step_keyword
      s0 << r4
      if r4
        r5 = _nt_keyword_space
        s0 << r5
        if r5
          r6 = _nt_line_to_eol
          s0 << r6
          if r6
            i7 = index
            s8, i8 = [], index
            loop do
              r9 = _nt_eol
              if r9
                s8 << r9
              else
                break
              end
            end
            if s8.empty?
              self.index = i8
              r8 = nil
            else
              r8 = instantiate_node(SyntaxNode,input, i8...index, s8)
            end
            if r8
              r7 = r8
            else
              r10 = _nt_eof
              if r10
                r7 = r10
              else
                self.index = i7
                r7 = nil
              end
            end
            s0 << r7
            if r7
              r12 = _nt_multiline_arg
              if r12
                r11 = r12
              else
                r11 = instantiate_node(SyntaxNode,input, index...index)
              end
              s0 << r11
              if r11
                r13 = _nt_white
                s0 << r13
              end
            end
          end
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Step0)
    r0.extend(Step1)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:step][start_index] = r0

  return r0
end

#_nt_steps ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 954

def _nt_steps
  start_index = index
  if node_cache[:steps].has_key?(index)
    cached = node_cache[:steps][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    r1 = _nt_step
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  r0.extend(Steps0)

  node_cache[:steps][start_index] = r0

  return r0
end

#_nt_tag ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 318

def _nt_tag
  start_index = index
  if node_cache[:tag].has_key?(index)
    cached = node_cache[:tag][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  if input.index('@', index) == index
    r1 = instantiate_node(SyntaxNode,input, index...(index + 1))
    @index += 1
  else
    terminal_parse_failure('@')
    r1 = nil
  end
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      if input.index(Regexp.new('[^@\\r\\n\\t ]'), index) == index
        r3 = instantiate_node(SyntaxNode,input, index...(index + 1))
        @index += 1
      else
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    if s2.empty?
      self.index = i2
      r2 = nil
    else
      r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    end
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Tag0)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:tag][start_index] = r0

  return r0
end

#_nt_tags ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 235

def _nt_tags
  start_index = index
  if node_cache[:tags].has_key?(index)
    cached = node_cache[:tags][index]
    @index = cached.interval.end if cached
    return cached
  end

  i0, s0 = index, []
  r1 = _nt_white
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      i3, s3 = index, []
      r4 = _nt_tag
      s3 << r4
      if r4
        s5, i5 = [], index
        loop do
          i6 = index
          r7 = _nt_space
          if r7
            r6 = r7
          else
            r8 = _nt_eol
            if r8
              r6 = r8
            else
              self.index = i6
              r6 = nil
            end
          end
          if r6
            s5 << r6
          else
            break
          end
        end
        if s5.empty?
          self.index = i5
          r5 = nil
        else
          r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
        end
        s3 << r5
      end
      if s3.last
        r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
        r3.extend(Tags0)
      else
        self.index = i3
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Tags1)
    r0.extend(Tags2)
  else
    self.index = i0
    r0 = nil
  end

  node_cache[:tags][start_index] = r0

  return r0
end

#_nt_white ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 1771

def _nt_white
  start_index = index
  if node_cache[:white].has_key?(index)
    cached = node_cache[:white][index]
    @index = cached.interval.end if cached
    return cached
  end

  s0, i0 = [], index
  loop do
    i1 = index
    r2 = _nt_space
    if r2
      r1 = r2
    else
      r3 = _nt_eol
      if r3
        r1 = r3
      else
        self.index = i1
        r1 = nil
      end
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)

  node_cache[:white][start_index] = r0

  return r0
end

#root ⇒ Object 



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# File 'lib/cucumber/parser/feature.rb', line 12

def root
  @root || :feature_sub
end