Method: Bindy::Language#_nt_identifier

Defined in:

lib/bindy/language.rb

#_nt_identifier ⇒ Object

# File 'lib/bindy/language.rb', line 253

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

  s0, i0 = [], index
  loop do
    if has_terminal?(@regexps[gr = '\A[a-z0-9\\_]'] ||= Regexp.new(gr), :regexp, index)
      r1 = true
      @index += 1
    else
      terminal_parse_failure('[a-z0-9\\_]')
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  if s0.empty?
    @index = i0
    r0 = nil
  else
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  end

  node_cache[:identifier][start_index] = r0

  r0
end