Module: Brevity::Sequence

Includes:
Modifier, Note, Treetop::Runtime
Included in:
SequenceParser
Defined in:
lib/brevity/parsing/expression/sequence.rb

Defined Under Namespace

Modules: Sequence0, Sequence1

Instance Method Summary collapse

Methods included from Modifier

#_nt_modifier

Methods included from StretchModifier

#_nt_stretch_modifier

Methods included from Duration

#_nt_den_only, #_nt_duration, #_nt_num_and_den, #_nt_num_only

Methods included from PositiveInteger

#_nt_positive_integer

Methods included from NonnegativeInteger

#_nt_nonnegative_integer

Methods included from TransposeModifier

#_nt_transpose_modifier

Methods included from DuplicateModifier

#_nt_duplicate_modifier

Methods included from Note

#_nt_monophonic_note, #_nt_note, #_nt_pitch_link, #_nt_polyphonic_note, #_nt_rest_note

Methods included from Link

#_nt_link

Methods included from Pitch

#_nt_pitch

Methods included from Accent

#_nt_accent

Instance Method Details

#_nt_sequence ⇒ Object 



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# File 'lib/brevity/parsing/expression/sequence.rb', line 34

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

  i0, s0 = index, []
  r1 = _nt_note
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      i3, s3 = index, []
      s4, i4 = [], index
      loop do
        if has_terminal?(@regexps[gr = '\A[\\s]'] ||= Regexp.new(gr), :regexp, index)
          r5 = true
          @index += 1
        else
          terminal_parse_failure('[\\s]')
          r5 = nil
        end
        if r5
          s4 << r5
        else
          break
        end
      end
      if s4.empty?
        @index = i4
        r4 = nil
      else
        r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
      end
      s3 << r4
      if r4
        r6 = _nt_note
        s3 << r6
        if r6
          i7 = index
          r8 = _nt_modifier
          if r8
            r7 = nil
          else
            @index = i7
            r7 = instantiate_node(SyntaxNode,input, index...index)
          end
          s3 << r7
        end
      end
      if s3.last
        r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
        r3.extend(Sequence0)
      else
        @index = i3
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    if s2.empty?
      @index = i2
      r2 = nil
    else
      r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    end
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SequenceNode,input, i0...index, s0)
    r0.extend(Sequence1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:sequence][start_index] = r0

  r0
end

#root ⇒ Object 



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# File 'lib/brevity/parsing/expression/sequence.rb', line 9

def root
  @root ||= :sequence
end