Re: [Qemu-devel] [PATCH 15/16] qdev-monitor: Clean up qdev_device_add() variable naming

["Andreas Färber" <afaerber@suse.de>]

Am 26.08.2013 09:52, schrieb Wenchao Xia:
> 于 2013-8-24 8:00, Andreas Färber 写道:
>> Avoid confusion between object and object class.
>   between object class and device class?

No the issue is that by convention we usually use

Object *obj;
ObjectClass *oc; /* previously: klass or k */

rather than

ObjectClass *obj;

That makes the code more difficult to read.

This part of the series is not so important yet, so we can give it some
more review and thought.

Regards,
Andreas

> 
>> Tidy DeviceClass variable while at it.
>>
>> Signed-off-by: Andreas Färber <afaerber@suse.de>
>> ---
>>   qdev-monitor.c | 22 +++++++++++-----------
>>   1 file changed, 11 insertions(+), 11 deletions(-)
>>
>> diff --git a/qdev-monitor.c b/qdev-monitor.c
>> index 410cdcb..51bfec0 100644
>> --- a/qdev-monitor.c
>> +++ b/qdev-monitor.c
>> @@ -444,8 +444,8 @@ static BusState *qbus_find(const char *path)
>>
>>   DeviceState *qdev_device_add(QemuOpts *opts)
>>   {
>> -    ObjectClass *obj;
>> -    DeviceClass *k;
>> +    ObjectClass *oc;
>> +    DeviceClass *dc;
>>       const char *driver, *path, *id;
>>       DeviceState *qdev;
>>       BusState *bus = NULL;
>> @@ -457,22 +457,22 @@ DeviceState *qdev_device_add(QemuOpts *opts)
>>       }
>>
>>       /* find driver */
>> -    obj = object_class_by_name(driver);
>> -    if (!obj) {
>> +    oc = object_class_by_name(driver);
>> +    if (!oc) {
>>           const char *typename = find_typename_by_alias(driver);
>>
>>           if (typename) {
>>               driver = typename;
>> -            obj = object_class_by_name(driver);
>> +            oc = object_class_by_name(driver);
>>           }
>>       }
>>
>> -    if (!obj) {
>> +    if (!oc) {
>>           qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver",
>> "device type");
>>           return NULL;
>>       }
>>
>> -    k = DEVICE_CLASS(obj);
>> +    dc = DEVICE_CLASS(oc);
>>
>>       /* find bus */
>>       path = qemu_opt_get(opts, "bus");
>> @@ -481,16 +481,16 @@ DeviceState *qdev_device_add(QemuOpts *opts)
>>           if (!bus) {
>>               return NULL;
>>           }
>> -        if (!object_dynamic_cast(OBJECT(bus), k->bus_type)) {
>> +        if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
>>               qerror_report(QERR_BAD_BUS_FOR_DEVICE,
>>                             driver, object_get_typename(OBJECT(bus)));
>>               return NULL;
>>           }
>> -    } else if (k->bus_type != NULL) {
>> -        bus = qbus_find_recursive(sysbus_get_default(), NULL,
>> k->bus_type);
>> +    } else if (dc->bus_type != NULL) {
>> +        bus = qbus_find_recursive(sysbus_get_default(), NULL,
>> dc->bus_type);
>>           if (!bus) {
>>               qerror_report(QERR_NO_BUS_FOR_DEVICE,
>> -                          k->bus_type, driver);
>> +                          dc->bus_type, driver);
>>               return NULL;
>>           }
>>       }
>>
> 
> 


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