Method: Exception#==

Defined in:
error.c

#==(obj) ⇒ Boolean

Equality—If obj is not an Exception, returns false. Otherwise, returns true if exc and obj share same class, messages, and backtrace.

Returns:

  • (Boolean) 


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# File 'error.c', line 922

static VALUE
exc_equal(VALUE exc, VALUE obj)
{
    VALUE mesg, backtrace;
    const ID id_mesg = idMesg;

    if (exc == obj) return Qtrue;

    if (rb_obj_class(exc) != rb_obj_class(obj)) {
	int status = 0;
	ID id_message, id_backtrace;
	CONST_ID(id_message, "message");
	CONST_ID(id_backtrace, "backtrace");

	obj = rb_protect(try_convert_to_exception, obj, &status);
	if (status || obj == Qundef) {
	    rb_set_errinfo(Qnil);
	    return Qfalse;
	}
	if (rb_obj_class(exc) != rb_obj_class(obj)) return Qfalse;
	mesg = rb_check_funcall(obj, id_message, 0, 0);
	if (mesg == Qundef) return Qfalse;
	backtrace = rb_check_funcall(obj, id_backtrace, 0, 0);
	if (backtrace == Qundef) return Qfalse;
    }
    else {
	mesg = rb_attr_get(obj, id_mesg);
	backtrace = exc_backtrace(obj);
    }

    if (!rb_equal(rb_attr_get(exc, id_mesg), mesg))
	return Qfalse;
    if (!rb_equal(exc_backtrace(exc), backtrace))
	return Qfalse;
    return Qtrue;
}