@angular/core
Version:
Angular - the core framework
216 lines • 30.2 kB
JavaScript
/**
* @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 { __read, __spread } from "tslib";
import { resolveForwardRef } from '../di/forward_ref';
import { Injector } from '../di/injector';
import { INJECTOR, setCurrentInjector } from '../di/injector_compatibility';
import { getInjectableDef } from '../di/interface/defs';
import { INJECTOR_SCOPE } from '../di/scope';
import { NgModuleRef } from '../linker/ng_module_factory';
import { newArray } from '../util/array_utils';
import { stringify } from '../util/stringify';
import { splitDepsDsl, tokenKey } from './util';
var UNDEFINED_VALUE = {};
var InjectorRefTokenKey = tokenKey(Injector);
var INJECTORRefTokenKey = tokenKey(INJECTOR);
var NgModuleRefTokenKey = tokenKey(NgModuleRef);
export function moduleProvideDef(flags, token, value, deps) {
// Need to resolve forwardRefs as e.g. for `useValue` we
// lowered the expression and then stopped evaluating it,
// i.e. also didn't unwrap it.
value = resolveForwardRef(value);
var depDefs = splitDepsDsl(deps, stringify(token));
return {
// will bet set by the module definition
index: -1,
deps: depDefs,
flags: flags,
token: token,
value: value
};
}
export function moduleDef(providers) {
var providersByKey = {};
var modules = [];
var scope = null;
for (var i = 0; i < providers.length; i++) {
var provider = providers[i];
if (provider.token === INJECTOR_SCOPE) {
scope = provider.value;
}
if (provider.flags & 1073741824 /* TypeNgModule */) {
modules.push(provider.token);
}
provider.index = i;
providersByKey[tokenKey(provider.token)] = provider;
}
return {
// Will be filled later...
factory: null,
providersByKey: providersByKey,
providers: providers,
modules: modules,
scope: scope,
};
}
export function initNgModule(data) {
var def = data._def;
var providers = data._providers = newArray(def.providers.length);
for (var i = 0; i < def.providers.length; i++) {
var provDef = def.providers[i];
if (!(provDef.flags & 4096 /* LazyProvider */)) {
// Make sure the provider has not been already initialized outside this loop.
if (providers[i] === undefined) {
providers[i] = _createProviderInstance(data, provDef);
}
}
}
}
export function resolveNgModuleDep(data, depDef, notFoundValue) {
if (notFoundValue === void 0) { notFoundValue = Injector.THROW_IF_NOT_FOUND; }
var former = setCurrentInjector(data);
try {
if (depDef.flags & 8 /* Value */) {
return depDef.token;
}
if (depDef.flags & 2 /* Optional */) {
notFoundValue = null;
}
if (depDef.flags & 1 /* SkipSelf */) {
return data._parent.get(depDef.token, notFoundValue);
}
var tokenKey_1 = depDef.tokenKey;
switch (tokenKey_1) {
case InjectorRefTokenKey:
case INJECTORRefTokenKey:
case NgModuleRefTokenKey:
return data;
}
var providerDef = data._def.providersByKey[tokenKey_1];
var injectableDef = void 0;
if (providerDef) {
var providerInstance = data._providers[providerDef.index];
if (providerInstance === undefined) {
providerInstance = data._providers[providerDef.index] =
_createProviderInstance(data, providerDef);
}
return providerInstance === UNDEFINED_VALUE ? undefined : providerInstance;
}
else if ((injectableDef = getInjectableDef(depDef.token)) && targetsModule(data, injectableDef)) {
var index = data._providers.length;
data._def.providers[index] = data._def.providersByKey[depDef.tokenKey] = {
flags: 1024 /* TypeFactoryProvider */ | 4096 /* LazyProvider */,
value: injectableDef.factory,
deps: [],
index: index,
token: depDef.token,
};
data._providers[index] = UNDEFINED_VALUE;
return (data._providers[index] =
_createProviderInstance(data, data._def.providersByKey[depDef.tokenKey]));
}
else if (depDef.flags & 4 /* Self */) {
return notFoundValue;
}
return data._parent.get(depDef.token, notFoundValue);
}
finally {
setCurrentInjector(former);
}
}
function moduleTransitivelyPresent(ngModule, scope) {
return ngModule._def.modules.indexOf(scope) > -1;
}
function targetsModule(ngModule, def) {
var providedIn = def.providedIn;
return providedIn != null &&
(providedIn === 'any' || providedIn === ngModule._def.scope ||
moduleTransitivelyPresent(ngModule, providedIn));
}
function _createProviderInstance(ngModule, providerDef) {
var injectable;
switch (providerDef.flags & 201347067 /* Types */) {
case 512 /* TypeClassProvider */:
injectable = _createClass(ngModule, providerDef.value, providerDef.deps);
break;
case 1024 /* TypeFactoryProvider */:
injectable = _callFactory(ngModule, providerDef.value, providerDef.deps);
break;
case 2048 /* TypeUseExistingProvider */:
injectable = resolveNgModuleDep(ngModule, providerDef.deps[0]);
break;
case 256 /* TypeValueProvider */:
injectable = providerDef.value;
break;
}
// The read of `ngOnDestroy` here is slightly expensive as it's megamorphic, so it should be
// avoided if possible. The sequence of checks here determines whether ngOnDestroy needs to be
// checked. It might not if the `injectable` isn't an object or if NodeFlags.OnDestroy is already
// set (ngOnDestroy was detected statically).
if (injectable !== UNDEFINED_VALUE && injectable !== null && typeof injectable === 'object' &&
!(providerDef.flags & 131072 /* OnDestroy */) && typeof injectable.ngOnDestroy === 'function') {
providerDef.flags |= 131072 /* OnDestroy */;
}
return injectable === undefined ? UNDEFINED_VALUE : injectable;
}
function _createClass(ngModule, ctor, deps) {
var len = deps.length;
switch (len) {
case 0:
return new ctor();
case 1:
return new ctor(resolveNgModuleDep(ngModule, deps[0]));
case 2:
return new ctor(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]));
case 3:
return new ctor(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]), resolveNgModuleDep(ngModule, deps[2]));
default:
var depValues = [];
for (var i = 0; i < len; i++) {
depValues[i] = resolveNgModuleDep(ngModule, deps[i]);
}
return new (ctor.bind.apply(ctor, __spread([void 0], depValues)))();
}
}
function _callFactory(ngModule, factory, deps) {
var len = deps.length;
switch (len) {
case 0:
return factory();
case 1:
return factory(resolveNgModuleDep(ngModule, deps[0]));
case 2:
return factory(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]));
case 3:
return factory(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]), resolveNgModuleDep(ngModule, deps[2]));
default:
var depValues = [];
for (var i = 0; i < len; i++) {
depValues[i] = resolveNgModuleDep(ngModule, deps[i]);
}
return factory.apply(void 0, __spread(depValues));
}
}
export function callNgModuleLifecycle(ngModule, lifecycles) {
var def = ngModule._def;
var destroyed = new Set();
for (var i = 0; i < def.providers.length; i++) {
var provDef = def.providers[i];
if (provDef.flags & 131072 /* OnDestroy */) {
var instance = ngModule._providers[i];
if (instance && instance !== UNDEFINED_VALUE) {
var onDestroy = instance.ngOnDestroy;
if (typeof onDestroy === 'function' && !destroyed.has(instance)) {
onDestroy.apply(instance);
destroyed.add(instance);
}
}
}
}
}
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* @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {resolveForwardRef} from '../di/forward_ref';\nimport {Injector} from '../di/injector';\nimport {INJECTOR, setCurrentInjector} from '../di/injector_compatibility';\nimport {getInjectableDef, ɵɵInjectableDef} from '../di/interface/defs';\nimport {INJECTOR_SCOPE} from '../di/scope';\nimport {NgModuleRef} from '../linker/ng_module_factory';\nimport {newArray} from '../util/array_utils';\nimport {stringify} from '../util/stringify';\n\nimport {DepDef, DepFlags, NgModuleData, NgModuleDefinition, NgModuleProviderDef, NodeFlags} from './types';\nimport {splitDepsDsl, tokenKey} from './util';\n\nconst UNDEFINED_VALUE = {};\n\nconst InjectorRefTokenKey = tokenKey(Injector);\nconst INJECTORRefTokenKey = tokenKey(INJECTOR);\nconst NgModuleRefTokenKey = tokenKey(NgModuleRef);\n\nexport function moduleProvideDef(\n    flags: NodeFlags, token: any, value: any, deps: ([DepFlags, any]|any)[]): NgModuleProviderDef {\n  // Need to resolve forwardRefs as e.g. for `useValue` we\n  // lowered the expression and then stopped evaluating it,\n  // i.e. also didn't unwrap it.\n  value = resolveForwardRef(value);\n  const depDefs = splitDepsDsl(deps, stringify(token));\n  return {\n    // will bet set by the module definition\n    index: -1,\n    deps: depDefs,\n    flags,\n    token,\n    value\n  };\n}\n\nexport function moduleDef(providers: NgModuleProviderDef[]): NgModuleDefinition {\n  const providersByKey: {[key: string]: NgModuleProviderDef} = {};\n  const modules = [];\n  let scope: 'root'|'platform'|null = null;\n  for (let i = 0; i < providers.length; i++) {\n    const provider = providers[i];\n    if (provider.token === INJECTOR_SCOPE) {\n      scope = provider.value;\n    }\n    if (provider.flags & NodeFlags.TypeNgModule) {\n      modules.push(provider.token);\n    }\n    provider.index = i;\n    providersByKey[tokenKey(provider.token)] = provider;\n  }\n  return {\n    // Will be filled later...\n    factory: null,\n    providersByKey,\n    providers,\n    modules,\n    scope: scope,\n  };\n}\n\nexport function initNgModule(data: NgModuleData) {\n  const def = data._def;\n  const providers = data._providers = newArray(def.providers.length);\n  for (let i = 0; i < def.providers.length; i++) {\n    const provDef = def.providers[i];\n    if (!(provDef.flags & NodeFlags.LazyProvider)) {\n      // Make sure the provider has not been already initialized outside this loop.\n      if (providers[i] === undefined) {\n        providers[i] = _createProviderInstance(data, provDef);\n      }\n    }\n  }\n}\n\nexport function resolveNgModuleDep(\n    data: NgModuleData, depDef: DepDef, notFoundValue: any = Injector.THROW_IF_NOT_FOUND): any {\n  const former = setCurrentInjector(data);\n  try {\n    if (depDef.flags & DepFlags.Value) {\n      return depDef.token;\n    }\n    if (depDef.flags & DepFlags.Optional) {\n      notFoundValue = null;\n    }\n    if (depDef.flags & DepFlags.SkipSelf) {\n      return data._parent.get(depDef.token, notFoundValue);\n    }\n    const tokenKey = depDef.tokenKey;\n    switch (tokenKey) {\n      case InjectorRefTokenKey:\n      case INJECTORRefTokenKey:\n      case NgModuleRefTokenKey:\n        return data;\n    }\n    const providerDef = data._def.providersByKey[tokenKey];\n    let injectableDef: ɵɵInjectableDef<any>|null;\n    if (providerDef) {\n      let providerInstance = data._providers[providerDef.index];\n      if (providerInstance === undefined) {\n        providerInstance = data._providers[providerDef.index] =\n            _createProviderInstance(data, providerDef);\n      }\n      return providerInstance === UNDEFINED_VALUE ? undefined : providerInstance;\n    } else if (\n        (injectableDef = getInjectableDef(depDef.token)) && targetsModule(data, injectableDef)) {\n      const index = data._providers.length;\n      data._def.providers[index] = data._def.providersByKey[depDef.tokenKey] = {\n        flags: NodeFlags.TypeFactoryProvider | NodeFlags.LazyProvider,\n        value: injectableDef.factory,\n        deps: [],\n        index,\n        token: depDef.token,\n      };\n      data._providers[index] = UNDEFINED_VALUE;\n      return (\n          data._providers[index] =\n              _createProviderInstance(data, data._def.providersByKey[depDef.tokenKey]));\n    } else if (depDef.flags & DepFlags.Self) {\n      return notFoundValue;\n    }\n    return data._parent.get(depDef.token, notFoundValue);\n  } finally {\n    setCurrentInjector(former);\n  }\n}\n\nfunction moduleTransitivelyPresent(ngModule: NgModuleData, scope: any): boolean {\n  return ngModule._def.modules.indexOf(scope) > -1;\n}\n\nfunction targetsModule(ngModule: NgModuleData, def: ɵɵInjectableDef<any>): boolean {\n  const providedIn = def.providedIn;\n  return providedIn != null &&\n      (providedIn === 'any' || providedIn === ngModule._def.scope ||\n       moduleTransitivelyPresent(ngModule, providedIn));\n}\n\nfunction _createProviderInstance(ngModule: NgModuleData, providerDef: NgModuleProviderDef): any {\n  let injectable: any;\n  switch (providerDef.flags & NodeFlags.Types) {\n    case NodeFlags.TypeClassProvider:\n      injectable = _createClass(ngModule, providerDef.value, providerDef.deps);\n      break;\n    case NodeFlags.TypeFactoryProvider:\n      injectable = _callFactory(ngModule, providerDef.value, providerDef.deps);\n      break;\n    case NodeFlags.TypeUseExistingProvider:\n      injectable = resolveNgModuleDep(ngModule, providerDef.deps[0]);\n      break;\n    case NodeFlags.TypeValueProvider:\n      injectable = providerDef.value;\n      break;\n  }\n\n  // The read of `ngOnDestroy` here is slightly expensive as it's megamorphic, so it should be\n  // avoided if possible. The sequence of checks here determines whether ngOnDestroy needs to be\n  // checked. It might not if the `injectable` isn't an object or if NodeFlags.OnDestroy is already\n  // set (ngOnDestroy was detected statically).\n  if (injectable !== UNDEFINED_VALUE && injectable !== null && typeof injectable === 'object' &&\n      !(providerDef.flags & NodeFlags.OnDestroy) && typeof injectable.ngOnDestroy === 'function') {\n    providerDef.flags |= NodeFlags.OnDestroy;\n  }\n  return injectable === undefined ? UNDEFINED_VALUE : injectable;\n}\n\nfunction _createClass(ngModule: NgModuleData, ctor: any, deps: DepDef[]): any {\n  const len = deps.length;\n  switch (len) {\n    case 0:\n      return new ctor();\n    case 1:\n      return new ctor(resolveNgModuleDep(ngModule, deps[0]));\n    case 2:\n      return new ctor(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]));\n    case 3:\n      return new ctor(\n          resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]),\n          resolveNgModuleDep(ngModule, deps[2]));\n    default:\n      const depValues = [];\n      for (let i = 0; i < len; i++) {\n        depValues[i] = resolveNgModuleDep(ngModule, deps[i]);\n      }\n      return new ctor(...depValues);\n  }\n}\n\nfunction _callFactory(ngModule: NgModuleData, factory: any, deps: DepDef[]): any {\n  const len = deps.length;\n  switch (len) {\n    case 0:\n      return factory();\n    case 1:\n      return factory(resolveNgModuleDep(ngModule, deps[0]));\n    case 2:\n      return factory(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]));\n    case 3:\n      return factory(\n          resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]),\n          resolveNgModuleDep(ngModule, deps[2]));\n    default:\n      const depValues = [];\n      for (let i = 0; i < len; i++) {\n        depValues[i] = resolveNgModuleDep(ngModule, deps[i]);\n      }\n      return factory(...depValues);\n  }\n}\n\nexport function callNgModuleLifecycle(ngModule: NgModuleData, lifecycles: NodeFlags) {\n  const def = ngModule._def;\n  const destroyed = new Set<any>();\n  for (let i = 0; i < def.providers.length; i++) {\n    const provDef = def.providers[i];\n    if (provDef.flags & NodeFlags.OnDestroy) {\n      const instance = ngModule._providers[i];\n      if (instance && instance !== UNDEFINED_VALUE) {\n        const onDestroy: Function|undefined = instance.ngOnDestroy;\n        if (typeof onDestroy === 'function' && !destroyed.has(instance)) {\n          onDestroy.apply(instance);\n          destroyed.add(instance);\n        }\n      }\n    }\n  }\n}\n"]}