Module: Brevity::NonnegativeInteger

Includes:
Treetop::Runtime
Included in:
NonnegativeIntegerParser, PositiveInteger, TransposeModifier
Defined in:
lib/brevity/parsing/numbers/nonnegative_integer.rb

Instance Method Summary collapse

Instance Method Details

#_nt_nonnegative_integer ⇒ Object 



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# File 'lib/brevity/parsing/numbers/nonnegative_integer.rb', line 13

def _nt_nonnegative_integer
  start_index = index
  if node_cache[:nonnegative_integer].has_key?(index)
    cached = node_cache[:nonnegative_integer][index]
    if cached
      node_cache[:nonnegative_integer][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[0-9]'] ||= Regexp.new(gr), :regexp, index)
      r1 = true
      @index += 1
    else
      terminal_parse_failure('[0-9]')
      r1 = nil
    end
    if r1
      s0 << r1
    else
      break
    end
  end
  r0 = instantiate_node(SyntaxNode,input, i0...index, s0)

  node_cache[:nonnegative_integer][start_index] = r0

  r0
end

#root ⇒ Object 



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# File 'lib/brevity/parsing/numbers/nonnegative_integer.rb', line 9

def root
  @root ||= :nonnegative_integer
end