History

Miško Hevery 2961bf06c6 refactor(ivy): move hostVars/hostAttrs from instruction to DirectiveDef (#34683 )

This change moves information from instructions to declarative position:
- `ɵɵallocHostVars(vars)` => `DirectiveDef.hostVars`
- `ɵɵelementHostAttrs(attrs)` => `DirectiveDef.hostAttrs`

When merging directives it is necessary to know about `hostVars` and `hostAttrs`. Before this change the information was stored in the `hostBindings` function. This was problematic, because in order to get to the information the `hostBindings` would have to be executed. In order for `hostBindings` to be executed the directives would have to be instantiated. This means that the directive instantiation would happen before we had knowledge about the `hostAttrs` and as a result the directive could observe in the constructor that not all of the `hostAttrs` have been applied. This further complicates the runtime as we have to apply `hostAttrs` in parts over many invocations.

`ɵɵallocHostVars` was unnecessarily complicated because it would have to update the `LView` (and Blueprint) while existing directives are already executing. By moving it out of `hostBindings` function we can access it statically and we can create correct `LView` (and Blueprint) in a single pass.

This change only changes how the instructions are generated, but does not change the runtime much. (We cheat by emulating the old behavior by calling `ɵɵallocHostVars` and `ɵɵelementHostAttrs`) Subsequent change will refactor the runtime to take advantage of the static information.

PR Close #34683

2020-01-24 12:22:10 -08:00

src

fix(ngcc): do not attempt compilation when analysis fails (#34889 )

2020-01-23 14:47:03 -08:00

test

refactor(ivy): move hostVars/hostAttrs from instruction to DirectiveDef (#34683 )

2020-01-24 12:22:10 -08:00

BUILD.bazel

perf(ivy): reuse prior analysis work during incremental builds (#34288 )

2019-12-12 13:11:45 -08:00

index.ts

refactor(ngcc): add support for asynchronous execution (#32427 )

2019-09-09 15:55:13 -04:00

main-ivy-ngcc.ts

fix(ngcc): rename the executable from ivy-ngcc to ngcc (#33140 )

2019-10-14 16:29:14 +00:00

main-ngcc.ts

fix(ngcc): render legacy i18n message ids by default (#34135 )

2019-12-03 10:15:53 -08:00

README.md

refactor(ivy): move ngcc into a higher level folder (#29092 )

2019-03-20 14:45:54 -04:00

README.md

Angular Compatibility Compiler (ngcc)

This compiler will convert node_modules compiled with ngc, into node_modules which appear to have been compiled with ngtsc.

This conversion will allow such "legacy" packages to be used by the Ivy rendering engine.

Building

The project is built using Bazel:

yarn bazel build //packages/compiler-cli/ngcc

Unit Testing

The unit tests are built and run using Bazel:

yarn bazel test //packages/compiler-cli/ngcc/test

Integration Testing

There are tests that check the behavior of the overall executable:

yarn bazel test //packages/compiler-cli/ngcc/test:integration