angular2
Version:
Angular 2 - a web framework for modern web apps
234 lines • 32.6 kB
JavaScript
;"use strict";
var lang_1 = require('angular2/src/facade/lang');
var collection_1 = require('angular2/src/facade/collection');
var reflection_1 = require('angular2/src/core/reflection/reflection');
var reflective_key_1 = require('./reflective_key');
var metadata_1 = require('./metadata');
var reflective_exceptions_1 = require('./reflective_exceptions');
var forward_ref_1 = require('./forward_ref');
var provider_1 = require('./provider');
/**
* `Dependency` is used by the framework to extend DI.
* This is internal to Angular and should not be used directly.
*/
var ReflectiveDependency = (function () {
function ReflectiveDependency(key, optional, lowerBoundVisibility, upperBoundVisibility, properties) {
this.key = key;
this.optional = optional;
this.lowerBoundVisibility = lowerBoundVisibility;
this.upperBoundVisibility = upperBoundVisibility;
this.properties = properties;
}
ReflectiveDependency.fromKey = function (key) {
return new ReflectiveDependency(key, false, null, null, []);
};
return ReflectiveDependency;
}());
exports.ReflectiveDependency = ReflectiveDependency;
var _EMPTY_LIST = lang_1.CONST_EXPR([]);
var ResolvedReflectiveProvider_ = (function () {
function ResolvedReflectiveProvider_(key, resolvedFactories, multiProvider) {
this.key = key;
this.resolvedFactories = resolvedFactories;
this.multiProvider = multiProvider;
}
Object.defineProperty(ResolvedReflectiveProvider_.prototype, "resolvedFactory", {
get: function () { return this.resolvedFactories[0]; },
enumerable: true,
configurable: true
});
return ResolvedReflectiveProvider_;
}());
exports.ResolvedReflectiveProvider_ = ResolvedReflectiveProvider_;
/**
* An internal resolved representation of a factory function created by resolving {@link Provider}.
*/
var ResolvedReflectiveFactory = (function () {
function ResolvedReflectiveFactory(
/**
* Factory function which can return an instance of an object represented by a key.
*/
factory,
/**
* Arguments (dependencies) to the `factory` function.
*/
dependencies) {
this.factory = factory;
this.dependencies = dependencies;
}
return ResolvedReflectiveFactory;
}());
exports.ResolvedReflectiveFactory = ResolvedReflectiveFactory;
/**
* Resolve a single provider.
*/
function resolveReflectiveFactory(provider) {
var factoryFn;
var resolvedDeps;
if (lang_1.isPresent(provider.useClass)) {
var useClass = forward_ref_1.resolveForwardRef(provider.useClass);
factoryFn = reflection_1.reflector.factory(useClass);
resolvedDeps = _dependenciesFor(useClass);
}
else if (lang_1.isPresent(provider.useExisting)) {
factoryFn = function (aliasInstance) { return aliasInstance; };
resolvedDeps = [ReflectiveDependency.fromKey(reflective_key_1.ReflectiveKey.get(provider.useExisting))];
}
else if (lang_1.isPresent(provider.useFactory)) {
factoryFn = provider.useFactory;
resolvedDeps = constructDependencies(provider.useFactory, provider.dependencies);
}
else {
factoryFn = function () { return provider.useValue; };
resolvedDeps = _EMPTY_LIST;
}
return new ResolvedReflectiveFactory(factoryFn, resolvedDeps);
}
exports.resolveReflectiveFactory = resolveReflectiveFactory;
/**
* Converts the {@link Provider} into {@link ResolvedProvider}.
*
* {@link Injector} internally only uses {@link ResolvedProvider}, {@link Provider} contains
* convenience provider syntax.
*/
function resolveReflectiveProvider(provider) {
return new ResolvedReflectiveProvider_(reflective_key_1.ReflectiveKey.get(provider.token), [resolveReflectiveFactory(provider)], provider.multi);
}
exports.resolveReflectiveProvider = resolveReflectiveProvider;
/**
* Resolve a list of Providers.
*/
function resolveReflectiveProviders(providers) {
var normalized = _normalizeProviders(providers, []);
var resolved = normalized.map(resolveReflectiveProvider);
return collection_1.MapWrapper.values(mergeResolvedReflectiveProviders(resolved, new Map()));
}
exports.resolveReflectiveProviders = resolveReflectiveProviders;
/**
* Merges a list of ResolvedProviders into a list where
* each key is contained exactly once and multi providers
* have been merged.
*/
function mergeResolvedReflectiveProviders(providers, normalizedProvidersMap) {
for (var i = 0; i < providers.length; i++) {
var provider = providers[i];
var existing = normalizedProvidersMap.get(provider.key.id);
if (lang_1.isPresent(existing)) {
if (provider.multiProvider !== existing.multiProvider) {
throw new reflective_exceptions_1.MixingMultiProvidersWithRegularProvidersError(existing, provider);
}
if (provider.multiProvider) {
for (var j = 0; j < provider.resolvedFactories.length; j++) {
existing.resolvedFactories.push(provider.resolvedFactories[j]);
}
}
else {
normalizedProvidersMap.set(provider.key.id, provider);
}
}
else {
var resolvedProvider;
if (provider.multiProvider) {
resolvedProvider = new ResolvedReflectiveProvider_(provider.key, collection_1.ListWrapper.clone(provider.resolvedFactories), provider.multiProvider);
}
else {
resolvedProvider = provider;
}
normalizedProvidersMap.set(provider.key.id, resolvedProvider);
}
}
return normalizedProvidersMap;
}
exports.mergeResolvedReflectiveProviders = mergeResolvedReflectiveProviders;
function _normalizeProviders(providers, res) {
providers.forEach(function (b) {
if (b instanceof lang_1.Type) {
res.push(provider_1.provide(b, { useClass: b }));
}
else if (b instanceof provider_1.Provider) {
res.push(b);
}
else if (b instanceof Array) {
_normalizeProviders(b, res);
}
else if (b instanceof provider_1.ProviderBuilder) {
throw new reflective_exceptions_1.InvalidProviderError(b.token);
}
else {
throw new reflective_exceptions_1.InvalidProviderError(b);
}
});
return res;
}
function constructDependencies(typeOrFunc, dependencies) {
if (lang_1.isBlank(dependencies)) {
return _dependenciesFor(typeOrFunc);
}
else {
var params = dependencies.map(function (t) { return [t]; });
return dependencies.map(function (t) { return _extractToken(typeOrFunc, t, params); });
}
}
exports.constructDependencies = constructDependencies;
function _dependenciesFor(typeOrFunc) {
var params = reflection_1.reflector.parameters(typeOrFunc);
if (lang_1.isBlank(params))
return [];
if (params.some(lang_1.isBlank)) {
throw new reflective_exceptions_1.NoAnnotationError(typeOrFunc, params);
}
return params.map(function (p) { return _extractToken(typeOrFunc, p, params); });
}
function _extractToken(typeOrFunc, metadata /*any[] | any*/, params) {
var depProps = [];
var token = null;
var optional = false;
if (!lang_1.isArray(metadata)) {
if (metadata instanceof metadata_1.InjectMetadata) {
return _createDependency(metadata.token, optional, null, null, depProps);
}
else {
return _createDependency(metadata, optional, null, null, depProps);
}
}
var lowerBoundVisibility = null;
var upperBoundVisibility = null;
for (var i = 0; i < metadata.length; ++i) {
var paramMetadata = metadata[i];
if (paramMetadata instanceof lang_1.Type) {
token = paramMetadata;
}
else if (paramMetadata instanceof metadata_1.InjectMetadata) {
token = paramMetadata.token;
}
else if (paramMetadata instanceof metadata_1.OptionalMetadata) {
optional = true;
}
else if (paramMetadata instanceof metadata_1.SelfMetadata) {
upperBoundVisibility = paramMetadata;
}
else if (paramMetadata instanceof metadata_1.HostMetadata) {
upperBoundVisibility = paramMetadata;
}
else if (paramMetadata instanceof metadata_1.SkipSelfMetadata) {
lowerBoundVisibility = paramMetadata;
}
else if (paramMetadata instanceof metadata_1.DependencyMetadata) {
if (lang_1.isPresent(paramMetadata.token)) {
token = paramMetadata.token;
}
depProps.push(paramMetadata);
}
}
token = forward_ref_1.resolveForwardRef(token);
if (lang_1.isPresent(token)) {
return _createDependency(token, optional, lowerBoundVisibility, upperBoundVisibility, depProps);
}
else {
throw new reflective_exceptions_1.NoAnnotationError(typeOrFunc, params);
}
}
function _createDependency(token, optional, lowerBoundVisibility, upperBoundVisibility, depProps) {
return new ReflectiveDependency(reflective_key_1.ReflectiveKey.get(token), optional, lowerBoundVisibility, upperBoundVisibility, depProps);
}
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{\n  Type,\n  isBlank,\n  isPresent,\n  CONST,\n  CONST_EXPR,\n  isArray,\n  isType\n} from 'angular2/src/facade/lang';\nimport {MapWrapper, ListWrapper} from 'angular2/src/facade/collection';\nimport {reflector} from 'angular2/src/core/reflection/reflection';\nimport {ReflectiveKey} from './reflective_key';\nimport {\n  InjectMetadata,\n  InjectableMetadata,\n  OptionalMetadata,\n  SelfMetadata,\n  HostMetadata,\n  SkipSelfMetadata,\n  DependencyMetadata\n} from './metadata';\nimport {\n  NoAnnotationError,\n  MixingMultiProvidersWithRegularProvidersError,\n  InvalidProviderError\n} from './reflective_exceptions';\nimport {resolveForwardRef} from './forward_ref';\nimport {Provider, ProviderBuilder, provide} from './provider';\n\n/**\n * `Dependency` is used by the framework to extend DI.\n * This is internal to Angular and should not be used directly.\n */\nexport class ReflectiveDependency {\n  constructor(public key: ReflectiveKey, public optional: boolean, public lowerBoundVisibility: any,\n              public upperBoundVisibility: any, public properties: any[]) {}\n\n  static fromKey(key: ReflectiveKey): ReflectiveDependency {\n    return new ReflectiveDependency(key, false, null, null, []);\n  }\n}\n\nconst _EMPTY_LIST = CONST_EXPR([]);\n\n/**\n * An internal resolved representation of a {@link Provider} used by the {@link Injector}.\n *\n * It is usually created automatically by `Injector.resolveAndCreate`.\n *\n * It can be created manually, as follows:\n *\n * ### Example ([live demo](http://plnkr.co/edit/RfEnhh8kUEI0G3qsnIeT?p%3Dpreview&p=preview))\n *\n * ```typescript\n * var resolvedProviders = Injector.resolve([new Provider('message', {useValue: 'Hello'})]);\n * var injector = Injector.fromResolvedProviders(resolvedProviders);\n *\n * expect(injector.get('message')).toEqual('Hello');\n * ```\n */\nexport interface ResolvedReflectiveProvider {\n  /**\n   * A key, usually a `Type`.\n   */\n  key: ReflectiveKey;\n\n  /**\n   * Factory function which can return an instance of an object represented by a key.\n   */\n  resolvedFactories: ResolvedReflectiveFactory[];\n\n  /**\n   * Indicates if the provider is a multi-provider or a regular provider.\n   */\n  multiProvider: boolean;\n}\n\n/**\n * See {@link ResolvedProvider} instead.\n *\n * @deprecated\n */\nexport interface ResolvedReflectiveBinding extends ResolvedReflectiveProvider {}\n\nexport class ResolvedReflectiveProvider_ implements ResolvedReflectiveBinding {\n  constructor(public key: ReflectiveKey, public resolvedFactories: ResolvedReflectiveFactory[],\n              public multiProvider: boolean) {}\n\n  get resolvedFactory(): ResolvedReflectiveFactory { return this.resolvedFactories[0]; }\n}\n\n/**\n * An internal resolved representation of a factory function created by resolving {@link Provider}.\n */\nexport class ResolvedReflectiveFactory {\n  constructor(\n      /**\n       * Factory function which can return an instance of an object represented by a key.\n       */\n      public factory: Function,\n\n      /**\n       * Arguments (dependencies) to the `factory` function.\n       */\n      public dependencies: ReflectiveDependency[]) {}\n}\n\n\n/**\n * Resolve a single provider.\n */\nexport function resolveReflectiveFactory(provider: Provider): ResolvedReflectiveFactory {\n  var factoryFn: Function;\n  var resolvedDeps;\n  if (isPresent(provider.useClass)) {\n    var useClass = resolveForwardRef(provider.useClass);\n    factoryFn = reflector.factory(useClass);\n    resolvedDeps = _dependenciesFor(useClass);\n  } else if (isPresent(provider.useExisting)) {\n    factoryFn = (aliasInstance) => aliasInstance;\n    resolvedDeps = [ReflectiveDependency.fromKey(ReflectiveKey.get(provider.useExisting))];\n  } else if (isPresent(provider.useFactory)) {\n    factoryFn = provider.useFactory;\n    resolvedDeps = constructDependencies(provider.useFactory, provider.dependencies);\n  } else {\n    factoryFn = () => provider.useValue;\n    resolvedDeps = _EMPTY_LIST;\n  }\n  return new ResolvedReflectiveFactory(factoryFn, resolvedDeps);\n}\n\n/**\n * Converts the {@link Provider} into {@link ResolvedProvider}.\n *\n * {@link Injector} internally only uses {@link ResolvedProvider}, {@link Provider} contains\n * convenience provider syntax.\n */\nexport function resolveReflectiveProvider(provider: Provider): ResolvedReflectiveProvider {\n  return new ResolvedReflectiveProvider_(ReflectiveKey.get(provider.token),\n                                         [resolveReflectiveFactory(provider)], provider.multi);\n}\n\n/**\n * Resolve a list of Providers.\n */\nexport function resolveReflectiveProviders(\n    providers: Array<Type | Provider | any[]>): ResolvedReflectiveProvider[] {\n  var normalized = _normalizeProviders(providers, []);\n  var resolved = normalized.map(resolveReflectiveProvider);\n  return MapWrapper.values(\n      mergeResolvedReflectiveProviders(resolved, new Map<number, ResolvedReflectiveProvider>()));\n}\n\n/**\n * Merges a list of ResolvedProviders into a list where\n * each key is contained exactly once and multi providers\n * have been merged.\n */\nexport function mergeResolvedReflectiveProviders(\n    providers: ResolvedReflectiveProvider[],\n    normalizedProvidersMap: Map<number, ResolvedReflectiveProvider>):\n    Map<number, ResolvedReflectiveProvider> {\n  for (var i = 0; i < providers.length; i++) {\n    var provider = providers[i];\n    var existing = normalizedProvidersMap.get(provider.key.id);\n    if (isPresent(existing)) {\n      if (provider.multiProvider !== existing.multiProvider) {\n        throw new MixingMultiProvidersWithRegularProvidersError(existing, provider);\n      }\n      if (provider.multiProvider) {\n        for (var j = 0; j < provider.resolvedFactories.length; j++) {\n          existing.resolvedFactories.push(provider.resolvedFactories[j]);\n        }\n      } else {\n        normalizedProvidersMap.set(provider.key.id, provider);\n      }\n    } else {\n      var resolvedProvider;\n      if (provider.multiProvider) {\n        resolvedProvider = new ResolvedReflectiveProvider_(\n            provider.key, ListWrapper.clone(provider.resolvedFactories), provider.multiProvider);\n      } else {\n        resolvedProvider = provider;\n      }\n      normalizedProvidersMap.set(provider.key.id, resolvedProvider);\n    }\n  }\n  return normalizedProvidersMap;\n}\n\nfunction _normalizeProviders(providers: Array<Type | Provider | ProviderBuilder | any[]>,\n                             res: Provider[]): Provider[] {\n  providers.forEach(b => {\n    if (b instanceof Type) {\n      res.push(provide(b, {useClass: b}));\n\n    } else if (b instanceof Provider) {\n      res.push(b);\n\n    } else if (b instanceof Array) {\n      _normalizeProviders(b, res);\n\n    } else if (b instanceof ProviderBuilder) {\n      throw new InvalidProviderError(b.token);\n\n    } else {\n      throw new InvalidProviderError(b);\n    }\n  });\n\n  return res;\n}\n\nexport function constructDependencies(typeOrFunc: any,\n                                      dependencies: any[]): ReflectiveDependency[] {\n  if (isBlank(dependencies)) {\n    return _dependenciesFor(typeOrFunc);\n  } else {\n    var params: any[][] = dependencies.map(t => [t]);\n    return dependencies.map(t => _extractToken(typeOrFunc, t, params));\n  }\n}\n\nfunction _dependenciesFor(typeOrFunc: any): ReflectiveDependency[] {\n  var params = reflector.parameters(typeOrFunc);\n  if (isBlank(params)) return [];\n  if (params.some(isBlank)) {\n    throw new NoAnnotationError(typeOrFunc, params);\n  }\n  return params.map((p: any[]) => _extractToken(typeOrFunc, p, params));\n}\n\nfunction _extractToken(typeOrFunc, metadata /*any[] | any*/,\n                       params: any[][]): ReflectiveDependency {\n  var depProps = [];\n  var token = null;\n  var optional = false;\n\n  if (!isArray(metadata)) {\n    if (metadata instanceof InjectMetadata) {\n      return _createDependency(metadata.token, optional, null, null, depProps);\n    } else {\n      return _createDependency(metadata, optional, null, null, depProps);\n    }\n  }\n\n  var lowerBoundVisibility = null;\n  var upperBoundVisibility = null;\n\n  for (var i = 0; i < metadata.length; ++i) {\n    var paramMetadata = metadata[i];\n\n    if (paramMetadata instanceof Type) {\n      token = paramMetadata;\n\n    } else if (paramMetadata instanceof InjectMetadata) {\n      token = paramMetadata.token;\n\n    } else if (paramMetadata instanceof OptionalMetadata) {\n      optional = true;\n\n    } else if (paramMetadata instanceof SelfMetadata) {\n      upperBoundVisibility = paramMetadata;\n\n    } else if (paramMetadata instanceof HostMetadata) {\n      upperBoundVisibility = paramMetadata;\n\n    } else if (paramMetadata instanceof SkipSelfMetadata) {\n      lowerBoundVisibility = paramMetadata;\n\n    } else if (paramMetadata instanceof DependencyMetadata) {\n      if (isPresent(paramMetadata.token)) {\n        token = paramMetadata.token;\n      }\n      depProps.push(paramMetadata);\n    }\n  }\n\n  token = resolveForwardRef(token);\n\n  if (isPresent(token)) {\n    return _createDependency(token, optional, lowerBoundVisibility, upperBoundVisibility, depProps);\n  } else {\n    throw new NoAnnotationError(typeOrFunc, params);\n  }\n}\n\nfunction _createDependency(token, optional, lowerBoundVisibility, upperBoundVisibility,\n                           depProps): ReflectiveDependency {\n  return new ReflectiveDependency(ReflectiveKey.get(token), optional, lowerBoundVisibility,\n                                  upperBoundVisibility, depProps);\n}\n"]}