mirror of
https://github.com/angular/angular
synced 2026-05-24 09:28:37 +00:00
54ceed53e2
This is the compile-time implementation of the `hostDirectives` feature plus a little bit of runtime code to illustrate how the newly-generated code will plug into the runtime. It works by creating a call to the new `ɵɵHostDirectivesFeature` feature whenever a directive has a `hostDirectives` field. Afterwards `ɵɵHostDirectivesFeature` will patch a new function onto the directive definition that will be invoked during directive matching.
For example, if we take the following definition:
```ts
@Directive({
hostDirectives: [HostA, {directive: HostB, inputs: ['input: alias']}]
})
class MyDir {}
```
Will compile to:
```js
MyDir.ɵdir = ɵɵdefineComponent({
features: [ɵɵHostDirectivesFeature([HostA, {
directive: HostB,
inputs: {
input: "alias"
}
}])]
});
```
The template type checking is implemented during directive matching by adding the host directives applied on the host to the array of matched directives whenever the host is matched in a template.
Relates to #8785.
PR Close #46868
|
||
|---|---|---|
| .. | ||
| BUILD.bazel | ||
| component_indexing_spec.ts | ||
| env.ts | ||
| extended_template_diagnostics_spec.ts | ||
| host_directives_spec.ts | ||
| imports_spec.ts | ||
| incremental_error_spec.ts | ||
| incremental_semantic_changes_spec.ts | ||
| incremental_spec.ts | ||
| incremental_typecheck_spec.ts | ||
| ls_typecheck_helpers_spec.ts | ||
| monorepo_spec.ts | ||
| ngtsc_spec.ts | ||
| scope_spec.ts | ||
| sourcemap_utils.ts | ||
| standalone_spec.ts | ||
| template_mapping_spec.ts | ||
| template_typecheck_spec.ts | ||
| util.ts | ||
| xi18n_spec.ts | ||