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refactor(compiler-cli): API for getting components from a template file (#39002)

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This commit adds an API to `NgCompiler`, a method called
`getComponentsWithTemplateFile`. Given a filesystem path to an external
template file, it retrieves a `Set` (actually a `ReadonlySet`) of component
declarations which are using this template. In most cases, this will only be
a single component.

This information is easily determined by the compiler during analysis, but
is hard for a lot of Angular tooling (e.g. the language service) to infer
independently. Therefore, it makes sense to expose this as a compiler API.

PR Close #39002
This commit is contained in:
Alex Rickabaugh
2020-09-25 16:28:32 -04:00
parent c8958d76db
commit 8f11b516f8
9 changed files with 132 additions and 16 deletions
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6
packages/compiler-cli/ngcc/src/analysis/decoration_analyzer.ts
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@ -14,7 +14,7 @@ import {CycleAnalyzer, ImportGraph} from '../../../src/ngtsc/cycles';
import {isFatalDiagnosticError} from '../../../src/ngtsc/diagnostics';
import {absoluteFrom, absoluteFromSourceFile, dirname, FileSystem, LogicalFileSystem, resolve} from '../../../src/ngtsc/file_system';
import {AbsoluteModuleStrategy, LocalIdentifierStrategy, LogicalProjectStrategy, ModuleResolver, NOOP_DEFAULT_IMPORT_RECORDER, PrivateExportAliasingHost, Reexport, ReferenceEmitter} from '../../../src/ngtsc/imports';
import {CompoundMetadataReader, CompoundMetadataRegistry, DtsMetadataReader, InjectableClassRegistry, LocalMetadataRegistry} from '../../../src/ngtsc/metadata';
import {CompoundMetadataReader, CompoundMetadataRegistry, DtsMetadataReader, InjectableClassRegistry, LocalMetadataRegistry, TemplateMapping} from '../../../src/ngtsc/metadata';
import {PartialEvaluator} from '../../../src/ngtsc/partial_evaluator';
import {LocalModuleScopeRegistry, MetadataDtsModuleScopeResolver} from '../../../src/ngtsc/scope';
import {DecoratorHandler} from '../../../src/ngtsc/transform';
@ -94,8 +94,8 @@ export class DecorationAnalyzer {
handlers: DecoratorHandler<unknown, unknown, unknown>[] = [
new ComponentDecoratorHandler(
this.reflectionHost, this.evaluator, this.fullRegistry, this.fullMetaReader,
this.scopeRegistry, this.scopeRegistry, this.isCore, this.resourceManager, this.rootDirs,
!!this.compilerOptions.preserveWhitespaces,
this.scopeRegistry, this.scopeRegistry, new TemplateMapping(), this.isCore,
this.resourceManager, this.rootDirs, !!this.compilerOptions.preserveWhitespaces,
/* i18nUseExternalIds */ true, this.bundle.enableI18nLegacyMessageIdFormat,
/* i18nNormalizeLineEndingsInICUs */ false, this.moduleResolver, this.cycleAnalyzer,
this.refEmitter, NOOP_DEFAULT_IMPORT_RECORDER, NOOP_DEPENDENCY_TRACKER,