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@angular/core

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Angular - the core framework

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/** * @license * Copyright Google LLC 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 { getCompilerFacade, } from '../../compiler/compiler_facade'; import { NG_FACTORY_DEF } from '../../render3/fields'; import { getClosureSafeProperty } from '../../util/property'; import { NG_PROV_DEF } from '../interface/defs'; import { angularCoreDiEnv } from './environment'; import { convertDependencies, reflectDependencies } from './util'; /** * Compile an Angular injectable according to its `Injectable` metadata, and patch the resulting * injectable def (`ɵprov`) onto the injectable type. */ export function compileInjectable(type, meta) { let ngInjectableDef = null; let ngFactoryDef = null; // if NG_PROV_DEF is already defined on this class then don't overwrite it if (!type.hasOwnProperty(NG_PROV_DEF)) { Object.defineProperty(type, NG_PROV_DEF, { get: () => { if (ngInjectableDef === null) { const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'injectable', type, }); ngInjectableDef = compiler.compileInjectable(angularCoreDiEnv, `ng:///${type.name}/ɵprov.js`, getInjectableMetadata(type, meta)); } return ngInjectableDef; }, }); } // if NG_FACTORY_DEF is already defined on this class then don't overwrite it if (!type.hasOwnProperty(NG_FACTORY_DEF)) { Object.defineProperty(type, NG_FACTORY_DEF, { get: () => { if (ngFactoryDef === null) { const compiler = getCompilerFacade({ usage: 0 /* JitCompilerUsage.Decorator */, kind: 'injectable', type, }); ngFactoryDef = compiler.compileFactory(angularCoreDiEnv, `ng:///${type.name}/ɵfac.js`, { name: type.name, type, typeArgumentCount: 0, // In JIT mode types are not available nor used. deps: reflectDependencies(type), target: compiler.FactoryTarget.Injectable, }); } return ngFactoryDef; }, // Leave this configurable so that the factories from directives or pipes can take precedence. configurable: true, }); } } const USE_VALUE = getClosureSafeProperty({ provide: String, useValue: getClosureSafeProperty, }); function isUseClassProvider(meta) { return meta.useClass !== undefined; } function isUseValueProvider(meta) { return USE_VALUE in meta; } function isUseFactoryProvider(meta) { return meta.useFactory !== undefined; } function isUseExistingProvider(meta) { return meta.useExisting !== undefined; } function getInjectableMetadata(type, srcMeta) { // Allow the compilation of a class with a `@Injectable()` decorator without parameters const meta = srcMeta || { providedIn: null }; const compilerMeta = { name: type.name, type: type, typeArgumentCount: 0, providedIn: meta.providedIn, }; if ((isUseClassProvider(meta) || isUseFactoryProvider(meta)) && meta.deps !== undefined) { compilerMeta.deps = convertDependencies(meta.deps); } // Check to see if the user explicitly provided a `useXxxx` property. if (isUseClassProvider(meta)) { compilerMeta.useClass = meta.useClass; } else if (isUseValueProvider(meta)) { compilerMeta.useValue = meta.useValue; } else if (isUseFactoryProvider(meta)) { compilerMeta.useFactory = meta.useFactory; } else if (isUseExistingProvider(meta)) { compilerMeta.useExisting = meta.useExisting; } return compilerMeta; } //# 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* @license\n * Copyright Google LLC 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 {\n  getCompilerFacade,\n  JitCompilerUsage,\n  R3InjectableMetadataFacade,\n} from '../../compiler/compiler_facade';\nimport {Type} from '../../interface/type';\nimport {NG_FACTORY_DEF} from '../../render3/fields';\nimport {getClosureSafeProperty} from '../../util/property';\nimport {resolveForwardRef} from '../forward_ref';\nimport {Injectable} from '../injectable';\nimport {NG_PROV_DEF} from '../interface/defs';\nimport {\n  ClassSansProvider,\n  ExistingSansProvider,\n  FactorySansProvider,\n  ValueProvider,\n  ValueSansProvider,\n} from '../interface/provider';\n\nimport {angularCoreDiEnv} from './environment';\nimport {convertDependencies, reflectDependencies} from './util';\n\n/**\n * Compile an Angular injectable according to its `Injectable` metadata, and patch the resulting\n * injectable def (`ɵprov`) onto the injectable type.\n */\nexport function compileInjectable(type: Type<any>, meta?: Injectable): void {\n  let ngInjectableDef: any = null;\n  let ngFactoryDef: any = null;\n\n  // if NG_PROV_DEF is already defined on this class then don't overwrite it\n  if (!type.hasOwnProperty(NG_PROV_DEF)) {\n    Object.defineProperty(type, NG_PROV_DEF, {\n      get: () => {\n        if (ngInjectableDef === null) {\n          const compiler = getCompilerFacade({\n            usage: JitCompilerUsage.Decorator,\n            kind: 'injectable',\n            type,\n          });\n          ngInjectableDef = compiler.compileInjectable(\n            angularCoreDiEnv,\n            `ng:///${type.name}/ɵprov.js`,\n            getInjectableMetadata(type, meta),\n          );\n        }\n        return ngInjectableDef;\n      },\n    });\n  }\n\n  // if NG_FACTORY_DEF is already defined on this class then don't overwrite it\n  if (!type.hasOwnProperty(NG_FACTORY_DEF)) {\n    Object.defineProperty(type, NG_FACTORY_DEF, {\n      get: () => {\n        if (ngFactoryDef === null) {\n          const compiler = getCompilerFacade({\n            usage: JitCompilerUsage.Decorator,\n            kind: 'injectable',\n            type,\n          });\n          ngFactoryDef = compiler.compileFactory(angularCoreDiEnv, `ng:///${type.name}/ɵfac.js`, {\n            name: type.name,\n            type,\n            typeArgumentCount: 0, // In JIT mode types are not available nor used.\n            deps: reflectDependencies(type),\n            target: compiler.FactoryTarget.Injectable,\n          });\n        }\n        return ngFactoryDef;\n      },\n      // Leave this configurable so that the factories from directives or pipes can take precedence.\n      configurable: true,\n    });\n  }\n}\n\ntype UseClassProvider = Injectable & ClassSansProvider & {deps?: any[]};\n\nconst USE_VALUE = getClosureSafeProperty<ValueProvider>({\n  provide: String,\n  useValue: getClosureSafeProperty,\n});\n\nfunction isUseClassProvider(meta: Injectable): meta is UseClassProvider {\n  return (meta as UseClassProvider).useClass !== undefined;\n}\n\nfunction isUseValueProvider(meta: Injectable): meta is Injectable & ValueSansProvider {\n  return USE_VALUE in meta;\n}\n\nfunction isUseFactoryProvider(meta: Injectable): meta is Injectable & FactorySansProvider {\n  return (meta as FactorySansProvider).useFactory !== undefined;\n}\n\nfunction isUseExistingProvider(meta: Injectable): meta is Injectable & ExistingSansProvider {\n  return (meta as ExistingSansProvider).useExisting !== undefined;\n}\n\nfunction getInjectableMetadata(type: Type<any>, srcMeta?: Injectable): R3InjectableMetadataFacade {\n  // Allow the compilation of a class with a `@Injectable()` decorator without parameters\n  const meta: Injectable = srcMeta || {providedIn: null};\n  const compilerMeta: R3InjectableMetadataFacade = {\n    name: type.name,\n    type: type,\n    typeArgumentCount: 0,\n    providedIn: meta.providedIn,\n  };\n  if ((isUseClassProvider(meta) || isUseFactoryProvider(meta)) && meta.deps !== undefined) {\n    compilerMeta.deps = convertDependencies(meta.deps);\n  }\n  // Check to see if the user explicitly provided a `useXxxx` property.\n  if (isUseClassProvider(meta)) {\n    compilerMeta.useClass = meta.useClass;\n  } else if (isUseValueProvider(meta)) {\n    compilerMeta.useValue = meta.useValue;\n  } else if (isUseFactoryProvider(meta)) {\n    compilerMeta.useFactory = meta.useFactory;\n  } else if (isUseExistingProvider(meta)) {\n    compilerMeta.useExisting = meta.useExisting;\n  }\n  return compilerMeta;\n}\n"]}