Method: Bindy::Language#_nt_boolean

Defined in:

lib/bindy/language.rb

#_nt_boolean ⇒ Object

# File 'lib/bindy/language.rb', line 600

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

  i0 = index
  r1 = _nt_true
  if r1
    r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
    r0 = r1
  else
    r2 = _nt_false
    if r2
      r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end

  node_cache[:boolean][start_index] = r0

  r0
end