Method: Bindy::Language#_nt_integer

Defined in:
lib/bindy/language.rb

#_nt_integerObject



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# File 'lib/bindy/language.rb', line 439

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

  i0, s0 = index, []
  if has_terminal?(@regexps[gr = '\A[\\+\\-]'] ||= Regexp.new(gr), :regexp, index)
    r2 = true
    @index += 1
  else
    terminal_parse_failure('[\\+\\-]')
    r2 = nil
  end
  if r2
    r1 = r2
  else
    r1 = instantiate_node(SyntaxNode,input, index...index)
  end
  s0 << r1
  if r1
    s3, i3 = [], index
    loop do
      if has_terminal?(@regexps[gr = '\A[\\d]'] ||= Regexp.new(gr), :regexp, index)
        r4 = true
        @index += 1
      else
        terminal_parse_failure('[\\d]')
        r4 = nil
      end
      if r4
        s3 << r4
      else
        break
      end
    end
    if s3.empty?
      @index = i3
      r3 = nil
    else
      r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
    end
    s0 << r3
  end
  if s0.last
    r0 = instantiate_node(LiteralInteger,input, i0...index, s0)
    r0.extend(Integer0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:integer][start_index] = r0

  r0
end