Fix DeserializeAsyncEnumerable generic recursion issue.

[eiriktsarpalis]

Refactors the DeserializeAsyncEnumerable moving the logic away from JsonTypeInfo<T> and into a static method in JsonSerializer. This should fully address the generic recursion issues we've been seeing creep up in AOT.

System.Text.Json.SourceGeneration.Tests AOT size

main

Total accounted size: 106.5 MB

PR branch

Total accounted size: 60.6 MB

Contributes to #87078.

[ghost]

Tagging subscribers to this area: @dotnet/area-system-text-json, @gregsdennis
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Refactors the DeserializeAsyncEnumerable moving the logic away from JsonTypeInfo<T> and into a static method in JsonSerializer. This should fully address the generic recursion issues we've been seeing creep up in AOT.

System.Text.Json.SourceGeneration.Tests AOT size

main

Total accounted size: 106.5 MB

PR branch

Total accounted size: 60.6 MB

Contributes to #87078.

Author:	eiriktsarpalis
Assignees:	-
Labels:	area-System.Text.Json
Milestone:	-

[ghost]

Tagging subscribers to 'size-reduction': @eerhardt, @SamMonoRT, @marek-safar
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Refactors the DeserializeAsyncEnumerable moving the logic away from JsonTypeInfo<T> and into a static method in JsonSerializer. This should fully address the generic recursion issues we've been seeing creep up in AOT.

System.Text.Json.SourceGeneration.Tests AOT size

main

Total accounted size: 106.5 MB

PR branch

Total accounted size: 60.6 MB

Contributes to #87078.

Author:	eiriktsarpalis
Assignees:	eiriktsarpalis
Labels:	area-System.Text.Json, size-reduction
Milestone:	8.0.0

[Sergio0694]

Updated size diffs for the Microsoft Store (including this and #87211):

System.Text.Json version	Package size
7.0.2	69.192 KB
8.0.0-preview.6.23316.2	65.122 KB

Delta: -4.07 MB (-5.88%)

Compared with the previous diffs (#84015 (comment)), which had a delta of -1.698 KB (-2.55%) from 7.0.2, the updated results are incredibly impressive, this is amazing!! Well over twice as much package size size reduction than Preview 5!!! 🎉🎉🎉

Really amazing work @eiriktsarpalis and the whole team! 😄