Module: Brevity::TransposeModifier

Includes:
NonnegativeInteger, Treetop::Runtime
Included in:
Modifier, TransposeModifierParser
Defined in:
lib/brevity/parsing/modifiers/transpose_modifier.rb

Defined Under Namespace

Modules: TransposeModifier0

Instance Method Summary collapse

Methods included from NonnegativeInteger

#_nt_nonnegative_integer

Instance Method Details

#_nt_transpose_modifier ⇒ Object 



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# File 'lib/brevity/parsing/modifiers/transpose_modifier.rb', line 25

def _nt_transpose_modifier
  start_index = index
  if node_cache[:transpose_modifier].has_key?(index)
    cached = node_cache[:transpose_modifier][index]
    if cached
      node_cache[:transpose_modifier][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)
    r1 = true
    @index += 1
  else
    terminal_parse_failure('[+-]')
    r1 = nil
  end
  s0 << r1
  if r1
    r2 = _nt_nonnegative_integer
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(TransposeModifierNode,input, i0...index, s0)
    r0.extend(TransposeModifier0)
  else
    @index = i0
    r0 = nil
  end

  node_cache[:transpose_modifier][start_index] = r0

  r0
end

#root ⇒ Object 



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# File 'lib/brevity/parsing/modifiers/transpose_modifier.rb', line 9

def root
  @root ||= :transpose_modifier
end