module Musicality::Parsing::Link

Public Instance Methods

_nt_glissando() click to toggle source
# File lib/musicality/notation/parsing/link_parsing.rb, line 84
def _nt_glissando
  start_index = index
  if node_cache[:glissando].has_key?(index)
    cached = node_cache[:glissando][index]
    if cached
      node_cache[:glissando][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if (match_len = has_terminal?(";", false, index))
    r1 = true
    @index += match_len
  else
    terminal_parse_failure('";"')
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_pitch
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(GlissandoNode,input, i0...index, s0)
    r0.extend(Glissando0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:glissando][start_index] = r0

  r0
end
_nt_portamento() click to toggle source
# File lib/musicality/notation/parsing/link_parsing.rb, line 127
def _nt_portamento
  start_index = index
  if node_cache[:portamento].has_key?(index)
    cached = node_cache[:portamento][index]
    if cached
      node_cache[:portamento][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  i0, s0 = index, []
  if (match_len = has_terminal?(":", false, index))
    r1 = true
    @index += match_len
  else
    terminal_parse_failure('":"')
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_pitch
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(PortamentoNode,input, i0...index, s0)
    r0.extend(Portamento0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:portamento][start_index] = r0

  r0
end
_nt_tie() click to toggle source
# File lib/musicality/notation/parsing/link_parsing.rb, line 54
def _nt_tie
  start_index = index
  if node_cache[:tie].has_key?(index)
    cached = node_cache[:tie][index]
    if cached
      node_cache[:tie][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end

  if (match_len = has_terminal?("~", false, index))
    r0 = instantiate_node(TieNode,input, index...(index + match_len))
    @index += match_len
  else
    terminal_parse_failure('"~"')
    r0 = nil
  end

  node_cache[:tie][start_index] = r0

  r0
end
root() click to toggle source
# File lib/musicality/notation/parsing/link_parsing.rb, line 10
def root
  @root ||= :link
end