Method: Fiddle::Importer#sizeof

Defined in:
lib/fiddle/import.rb

#sizeof(ty) ⇒ Object

Returns the sizeof ty, using Fiddle::Importer.parse_ctype to determine the C type and the appropriate Fiddle constant.



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# File 'lib/fiddle/import.rb', line 101

def sizeof(ty)
  case ty
  when String
    ty = parse_ctype(ty, type_alias).abs()
    case ty
    when TYPE_CHAR
      return SIZEOF_CHAR
    when TYPE_SHORT
      return SIZEOF_SHORT
    when TYPE_INT
      return SIZEOF_INT
    when TYPE_LONG
      return SIZEOF_LONG
    when TYPE_FLOAT
      return SIZEOF_FLOAT
    when TYPE_DOUBLE
      return SIZEOF_DOUBLE
    when TYPE_VOIDP
      return SIZEOF_VOIDP
    when TYPE_CONST_STRING
      return SIZEOF_CONST_STRING
    else
      if defined?(TYPE_LONG_LONG) and
        ty == TYPE_LONG_LONG
        return SIZEOF_LONG_LONG
      else
        raise(DLError, "unknown type: #{ty}")
      end
    end
  when Class
    if( ty.instance_methods().include?(:to_ptr) )
      return ty.size()
    end
  end
  return Pointer[ty].size()
end