Class R3BoundTarget

packages/compiler/src/render3/view/t2_binder.ts:1175–1389

* Metadata container for a `Target` that allows queries for specific bits of metadata. * * See `BoundTarget` for documentation on the individual methods.

 * See `BoundTarget` for documentation on the individual methods.
 */
class R3BoundTarget<DirectiveT extends DirectiveMeta> implements BoundTarget<DirectiveT> {
  /** Deferred blocks, ordered as they appear in the template. */
  private deferredBlocks: DeferredBlock[];

  /** Map of deferred blocks to their scope. */
  private deferredScopes: Map<DeferredBlock, Scope>;

  constructor(
    readonly target: Target<DirectiveT>,
    private directives: MatchedDirectives<DirectiveT>,
    private eagerDirectives: DirectiveT[],
    private missingDirectives: Set<string>,
    private bindings: BindingsMap<DirectiveT>,
    private references: ReferenceMap<DirectiveT>,
    private exprTargets: Map<AST, TemplateEntity>,
    private symbols: Map<TemplateEntity, Template>,
    private nestingLevel: Map<ScopedNode, number>,
    private scopedNodeEntities: ScopedNodeEntities,
    private usedPipes: Set<string>,
    private eagerPipes: Set<string>,
    rawDeferred: DeferBlockScopes,
    private conflictingHostDirectiveBindings: Map<
      DirectiveOwner,
      ConflictingHostDirectiveBinding<DirectiveT>[]
    >,
  ) {
    this.deferredBlocks = rawDeferred.map((current) => current[0]);
    this.deferredScopes = new Map(rawDeferred);
  }

  getEntitiesInScope(node: ScopedNode | null): ReadonlySet<TemplateEntity> {
    return this.scopedNodeEntities.get(node) ?? new Set();
  }

  getDirectivesOfNode(node: DirectiveOwner): DirectiveT[] | null {
    return this.directives.get(node) || null;
  }

  getReferenceTarget(ref: Reference): ReferenceTarget<DirectiveT> | null {
    return this.references.get(ref) || null;
  }

  getConsumerOfBinding(
    binding: BoundAttribute | BoundEvent | TextAttribute,
  ): DirectiveT | Element | Template | null {
    return this.bindings.get(binding) || null;
  }

  getExpressionTarget(expr: AST): TemplateEntity | null {
    return this.exprTargets.get(expr) || null;
  }

  getDefinitionNodeOfSymbol(symbol: TemplateEntity): ScopedNode | null {
    return this.symbols.get(symbol) || null;
  }

  getNestingLevel(node: ScopedNode): number {
    return this.nestingLevel.get(node) || 0;