Module: Musicality::Parsing::Segment

Includes:
NonnegativeFloat, NonnegativeInteger, NonnegativeRational, Treetop::Runtime
Included in:
SegmentParser
Defined in:
lib/musicality/notation/parsing/segment_parsing.rb

Defined Under Namespace

Modules: Range0, Range1

Instance Method Summary collapse

Methods included from NonnegativeRational

#_nt_nonnegative_rational

Methods included from PositiveInteger

#_nt_positive_integer

Methods included from NonnegativeInteger

#_nt_nonnegative_integer

Methods included from NonnegativeFloat

#_nt_exponent, #_nt_float1, #_nt_float2, #_nt_nonnegative_float

Instance Method Details

#_nt_nonnegative_number ⇒ Object 



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# File 'lib/musicality/notation/parsing/segment_parsing.rb', line 98

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

  i0 = index
  r1 = _nt_nonnegative_float
  if r1
    r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
    r0 = r1
  else
    r2 = _nt_nonnegative_rational
    if r2
      r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
      r0 = r2
    else
      r3 = _nt_nonnegative_integer
      if r3
        r3 = SyntaxNode.new(input, (index-1)...index) if r3 == true
        r0 = r3
      else
        @index = i0
        r0 = nil
      end
    end
  end

  node_cache[:nonnegative_number][start_index] = r0

  r0
end

#_nt_range ⇒ Object 



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# File 'lib/musicality/notation/parsing/segment_parsing.rb', line 36

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

  i0, s0 = index, []
  r1 = _nt_nonnegative_number
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      if has_terminal?(@regexps[gr = '\A[.]'] ||= Regexp.new(gr), :regexp, index)
        r3 = true
        @index += 1
      else
        terminal_parse_failure('[.]')
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
      if s2.size == 3
        break
      end
    end
    if s2.size < 2
      @index = i2
      r2 = nil
    else
      if s2.size < 3
        @terminal_failures.pop
      end
      r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    end
    s0 << r2
    if r2
      r4 = _nt_nonnegative_number
      s0 << r4
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Range0)
    r0.extend(Range1)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:range][start_index] = r0

  r0
end

#root ⇒ Object 



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# File 'lib/musicality/notation/parsing/segment_parsing.rb', line 10

def root
  @root ||= :range
end