feat(ivy): @NgModule -> ngInjectorDef compilation (#22458)

This adds compilation of @NgModule providers and imports into
ngInjectorDef statements in generated code. All @NgModule annotations
will be compiled and the @NgModule decorators removed from the
resultant js output.

All @Injectables will also be compiled in Ivy mode, and the decorator
removed.

PR Close #22458

packages/compiler/src/render3/r3_module_compiler.ts

@@ -0,0 +1,60 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {StaticSymbol} from '../aot/static_symbol';
+import {CompileShallowModuleMetadata, identifierName} from '../compile_metadata';
+import {InjectableCompiler} from '../injectable_compiler';
+import {mapLiteral} from '../output/map_util';
+import * as o from '../output/output_ast';
+import {OutputContext} from '../util';
+
+import {Identifiers as R3} from './r3_identifiers';
+
+const EMPTY_ARRAY = o.literalArr([]);
+
+function convertMetaToOutput(meta: any, ctx: OutputContext): o.Expression {
+  if (Array.isArray(meta)) {
+    return o.literalArr(meta.map(entry => convertMetaToOutput(entry, ctx)));
+  } else if (meta instanceof StaticSymbol) {
+    return ctx.importExpr(meta);
+  } else if (meta == null) {
+    return o.literal(meta);
+  } else {
+    throw new Error(`Internal error: Unsupported or unknown metadata: ${meta}`);
+  }
+}
+
+export function compileNgModule(
+    ctx: OutputContext, ngModule: CompileShallowModuleMetadata,
+    injectableCompiler: InjectableCompiler): void {
+  const className = identifierName(ngModule.type) !;
+
+  const rawImports = ngModule.rawImports ? [ngModule.rawImports] : [];
+  const rawExports = ngModule.rawExports ? [ngModule.rawExports] : [];
+
+  const injectorDefArg = mapLiteral({
+    'factory':
+        injectableCompiler.factoryFor({type: ngModule.type, symbol: ngModule.type.reference}, ctx),
+    'providers': convertMetaToOutput(ngModule.rawProviders, ctx),
+    'imports': convertMetaToOutput([...rawImports, ...rawExports], ctx),
+  });
+
+  const injectorDef = o.importExpr(R3.defineInjector).callFn([injectorDefArg]);
+
+  ctx.statements.push(new o.ClassStmt(
+      /* name */ className,
+      /* parent */ null,
+      /* fields */[new o.ClassField(
+          /* name */ 'ngInjectorDef',
+          /* type */ o.INFERRED_TYPE,
+          /* modifiers */[o.StmtModifier.Static],
+          /* initializer */ injectorDef, )],
+      /* getters */[],
+      /* constructorMethod */ new o.ClassMethod(null, [], []),
+      /* methods */[]));
+}