angular-docs-cn/packages/compiler
Keen Yee Liau 8b7acc4f8f refactor(compiler): Binding parser sets binding span as source span in Ivy (#39036)
Currently it is impossible to determine the source of a binding that
generates `BoundAttribute` because all bound attributes generated from a
microsyntax expression share the same source span.

For example, in
```html
<div *ngFor="let item of items; trackBy: trackByFn"></div>
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     source span for all `BoundAttribute`s generated from microsyntax
```
the `BoundAttribute` for both `ngForOf` and `ngForTrackBy`
share the same source span.

A lot of hacks were necessary in View Engine language service to work
around this limitation. It was done by inspecting the whole source span
then figuring out the relative position of the cursor.

With this change, we introduce a flag to set the binding span as the
source span of the `ParsedProperty` in Ivy AST.
This flag is needed so that we don't have to change VE ASTs.

Note that in the binding parser, we already set `bindingSpan` as the
source span for a `ParsedVariable`, and `keySpan` as the source span for
a literal attribute. This change makes the Ivy AST more consistent by
propagating the binding span to `ParsedProperty` as well.

PR Close #39036
2020-09-30 09:31:44 -04:00
..
design docs: fix typo in architecture.md guide (#38853) 2020-09-16 15:19:43 -07:00
src refactor(compiler): Binding parser sets binding span as source span in Ivy (#39036) 2020-09-30 09:31:44 -04:00
test refactor(compiler): Binding parser sets binding span as source span in Ivy (#39036) 2020-09-30 09:31:44 -04:00
testing build: update license headers to reference Google LLC (#37205) 2020-05-26 14:26:58 -04:00
BUILD.bazel build: add npm_integration_test && angular_integration_test (#33927) 2020-02-24 08:59:18 -08:00
compiler.ts build: update license headers to reference Google LLC (#37205) 2020-05-26 14:26:58 -04:00
index.ts build: update license headers to reference Google LLC (#37205) 2020-05-26 14:26:58 -04:00
package.json Revert "build: remove wombot proxy registry from package.jsons for release (#37378)" (#37495) 2020-06-10 08:21:45 -07:00
public_api.ts build: update license headers to reference Google LLC (#37205) 2020-05-26 14:26:58 -04:00