mirror of
https://github.com/angular/angular
synced 2026-05-24 09:28:37 +00:00
1d95a832e3
This commit introduces a new enum for capturing additional metadata about inputs. Called `InputFlags`. These will be built up at compile time and then propagated into the runtime logic, in a way that does not require additional lookup dictionaries data structures, or additional memory allocations for "common inputs" that do not have any flags. The flags will incorporate information on whether an input is signal based. This can then be used to avoid megamorphic accesses when such input is set- as we'd not need to check the input field value. This also avoids cases where an input signal may be used as initial value for an input (as we'd not incorrectly detect the input as a signal input then). The new metadata emit will be useful for incorporating additional metadata for inputs, such as whether they are required etc (although required inputs are a build-time only construct right now- but this is a good illustration of why input flags can be useful). An alternative could have been to have an additional boolean entry for signal inputs, but allocating a number with more flexible input flags seems more future proof and more reasonable andreadable. More information on the megamorphic access when updating an input signal https://docs.google.com/document/d/1FpnFruviKb6BFTQfMAP2AMEqEB0FI7z-3mT_qm7lzX8/edit. PR Close #53571 |
||
|---|---|---|
| .. | ||
| declare_classmetadata_spec.ts | ||
| declare_component_spec.ts | ||
| declare_directive_spec.ts | ||
| declare_factory_spec.ts | ||
| declare_injectable_spec.ts | ||
| declare_injector_spec.ts | ||
| declare_ng_module_spec.ts | ||
| declare_pipe_spec.ts | ||
| directive_spec.ts | ||
| matcher.ts | ||