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feat(ivy): first steps towards JIT compilation (#23833)

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This commit adds a mechanism by which the @angular/core annotations
for @Component, @Injectable, and @NgModule become decorators which,
when executed at runtime, trigger just-in-time compilation of their
associated types. The activation of these decorators is configured
by the ivy_switch mechanism, ensuring that the Ivy JIT engine does
not get included in Angular bundles unless specifically requested.

PR Close #23833
This commit is contained in:
Alex Rickabaugh
2018-05-09 08:35:25 -07:00
committed by Matias Niemelä
parent 1b6b936ef4
commit 919f42fea1
37 changed files with 1248 additions and 156 deletions
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32
packages/core/src/di/injectable.ts
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@ -6,6 +6,7 @@
* found in the LICENSE file at https://angular.io/license
*/
import {R3_COMPILE_INJECTABLE} from '../ivy_switch';
import {ReflectionCapabilities} from '../reflection/reflection_capabilities';
import {Type} from '../type';
import {makeDecorator, makeParamDecorator} from '../util/decorators';
@ -67,10 +68,7 @@ export interface InjectableDecorator {
*
* @experimental
*/
export interface Injectable {
providedIn?: Type<any>|'root'|null;
factory: () => any;
}
export interface Injectable { providedIn?: Type<any>|'root'|null; }
const EMPTY_ARRAY: any[] = [];
@ -110,6 +108,20 @@ export function convertInjectableProviderToFactory(
}
}
/**
* Supports @Injectable() in JIT mode for Render2.
*/
function preR3InjectableCompile(
injectableType: InjectableType<any>,
options: {providedIn?: Type<any>| 'root' | null} & InjectableProvider): void {
if (options && options.providedIn !== undefined && injectableType.ngInjectableDef === undefined) {
injectableType.ngInjectableDef = defineInjectable({
providedIn: options.providedIn,
factory: convertInjectableProviderToFactory(injectableType, options),
});
}
}
/**
* Injectable decorator and metadata.
*
@ -118,16 +130,8 @@ export function convertInjectableProviderToFactory(
*/
export const Injectable: InjectableDecorator = makeDecorator(
'Injectable', undefined, undefined, undefined,
(injectableType: InjectableType<any>,
options: {providedIn?: Type<any>| 'root' | null} & InjectableProvider) => {
if (options && options.providedIn !== undefined &&
injectableType.ngInjectableDef === undefined) {
injectableType.ngInjectableDef = defineInjectable({
providedIn: options.providedIn,
factory: convertInjectableProviderToFactory(injectableType, options)
});
}
});
(type: Type<any>, meta: Injectable) =>
(R3_COMPILE_INJECTABLE || preR3InjectableCompile)(type, meta));
/**
* Type representing injectable service.