[yew-devel] [PATCH yew-widget-toolkit v1 1/2] store: use try_borrow and expect_throw for better error messages

[Shannon Sterz]

On Tue May 6, 2025 at 2:21 PM CEST, Dominik Csapak wrote:
> On 5/6/25 13:54, Shannon Sterz wrote:
>> this makes use of the `UnwrapThrowExt` trait to improve error messages
>
> nit: this is not true anymore in v1
>
> could maybe fixed up on applying though

yes missed that sorry, will send a v2

>
>> when acquring store locks. taking such locks in async functions can
>> sometimes lead to bugs that can be unreliably reproduced, this should
>> provide more information about the source of the error compared to
>> just panicking.
>>
>> Signed-off-by: Shannon Sterz <s.sterz at proxmox.com>
>> ---
>>   src/state/store.rs | 11 +++++++++--
>>   1 file changed, 9 insertions(+), 2 deletions(-)
>>
>> diff --git a/src/state/store.rs b/src/state/store.rs
>> index bde7d9da..67e72b77 100644
>> --- a/src/state/store.rs
>> +++ b/src/state/store.rs
>> @@ -130,7 +130,10 @@ impl<T: 'static> Store<T> {
>>       /// Panics if the value is currently mutably locked.
>>       pub fn read(&self) -> StoreReadGuard<T> {
>>           StoreReadGuard {
>> -            state: self.inner.borrow(),
>> +            state: self
>> +                .inner
>> +                .try_borrow()
>> +                .expect("Could not acquire read lock on store!"),
>>           }
>>       }
>>
>> @@ -142,7 +145,11 @@ impl<T: 'static> Store<T> {
>>       /// When the returned [StoreWriteGuard] is dropped, the store listeners
>>       /// are notified. To prevent that use [StoreWriteGuard::skip_update]
>>       pub fn write(&self) -> StoreWriteGuard<T> {
>> -        let state = self.inner.borrow_mut();
>> +        let state = self
>> +            .inner
>> +            .try_borrow_mut()
>> +            .expect("Could not acquire write lock on store!");
>> +
>>           StoreWriteGuard {
>>               state,
>>               update: true,
>
>
>
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