: static VALUE eval(VALUE self, VALUE src, VALUE scope, char *file, int line)
    eval μΡʸ src ɾޤ
    ΤȤ軰 scope  nil Ǥʤ
    ΥƥȤθɾޤ

    ޤ src 򥳥ѥ뤹Ȥ
    ե file  line ܤ֤ƤȲꤷޤ

