Function compileInjectDependency

packages/compiler/src/render3/r3_factory.ts:235–276

(
  dep: R3DependencyMetadata,
  target: FactoryTarget,
  index: number,
)

}

function compileInjectDependency(
  dep: R3DependencyMetadata,
  target: FactoryTarget,
  index: number,
): o.Expression {
  // Interpret the dependency according to its resolved type.
  if (dep.token === null) {
    return o.importExpr(R3.invalidFactoryDep).callFn([o.literal(index)]);
  } else if (dep.attributeNameType === null) {
    // Build up the injection flags according to the metadata.
    const flags =
      InjectFlags.Default |
      (dep.self ? InjectFlags.Self : 0) |
      (dep.skipSelf ? InjectFlags.SkipSelf : 0) |
      (dep.host ? InjectFlags.Host : 0) |
      (dep.optional ? InjectFlags.Optional : 0) |
      (target === FactoryTarget.Pipe ? InjectFlags.ForPipe : 0);

    // If this dependency is optional or otherwise has non-default flags, then additional
    // parameters describing how to inject the dependency must be passed to the inject function
    // that's being used.
    let flagsParam: o.LiteralExpr | null =
      flags !== InjectFlags.Default || dep.optional ? o.literal(flags) : null;

    // Build up the arguments to the injectFn call.
    const injectArgs = [dep.token];
    if (flagsParam) {
      injectArgs.push(flagsParam);
    }
    const injectFn = getInjectFn(target);
    return o.importExpr(injectFn).callFn(injectArgs);
  } else {
    // The `dep.attributeTypeName` value is defined, which indicates that this is an `@Attribute()`
    // type dependency. For the generated JS we still want to use the `dep.token` value in case the
    // name given for the attribute is not a string literal. For example given `@Attribute(foo())`,
    // we want to generate `ɵɵinjectAttribute(foo())`.
    //
    // The `dep.attributeTypeName` is only actually used (in `createCtorDepType()`) to generate
    // typings.
    return o.importExpr(R3.injectAttribute).callFn([dep.token]);
  }
}

function createCtorDepsType(deps: R3DependencyMetadata[]): o.Type {
  let hasTypes = false;