def compile_source(identifier, arg_names, source, initial_line_number = 0, file_name = nil)
file_name ||= identifier
name = method_names[full_key(identifier, arg_names)]
arg_desc = arg_names.empty? ? '' : "(#{arg_names * ', '})"
fake_file_name = "#{file_name}#{arg_desc}"
method_def = wrap_source(name, arg_names, source)
begin
module_eval(method_def, fake_file_name, initial_line_number)
@mtimes[full_key(identifier, arg_names)] = Time.now
rescue Exception => e
e.blame_file! identifier
raise
end
name
end