add_constant

# File lib/rdoc/context.rb, line 481
  def add_constant constant
    return constant unless @document_self

    # HACK: avoid duplicate 'PI' & 'E' in math.c (1.8.7 source code)
    # (this is a #ifdef: should be handled by the C parser)
    known = @constants_hash[constant.name]

    if known then
      known.comment = constant.comment if known.comment.empty?

      known.value = constant.value if
        known.value.nil? or known.value.strip.empty?

      known.is_alias_for ||= constant.is_alias_for
    else
      @constants_hash[constant.name] = constant
      add_to @constants, constant
    end

    constant
  end