| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google Inc. All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | import * as tslib_1 from "tslib";
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| 9 | import { Identifiers } from './identifiers';
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| 10 | import * as o from './output/output_ast';
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| 11 | import { R3FactoryDelegateType, compileFactoryFunction } from './render3/r3_factory';
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| 12 | import { mapToMapExpression, typeWithParameters } from './render3/util';
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| 13 | export function compileInjectable(meta) {
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| 14 | var result = null;
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| 15 | var factoryMeta = {
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| 16 | name: meta.name,
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| 17 | type: meta.type,
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| 18 | deps: meta.ctorDeps,
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| 19 | injectFn: Identifiers.inject,
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| 20 | };
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| 21 | if (meta.useClass !== undefined) {
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| 22 | // meta.useClass has two modes of operation. Either deps are specified, in which case `new` is
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| 23 | // used to instantiate the class with dependencies injected, or deps are not specified and
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| 24 | // the factory of the class is used to instantiate it.
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| 25 | //
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| 26 | // A special case exists for useClass: Type where Type is the injectable type itself and no
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| 27 | // deps are specified, in which case 'useClass' is effectively ignored.
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| 28 | var useClassOnSelf = meta.useClass.isEquivalent(meta.type);
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| 29 | var deps = undefined;
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| 30 | if (meta.userDeps !== undefined) {
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| 31 | deps = meta.userDeps;
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| 32 | }
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| 33 | if (deps !== undefined) {
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| 34 | // factory: () => new meta.useClass(...deps)
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| 35 | result = compileFactoryFunction(tslib_1.__assign({}, factoryMeta, { delegate: meta.useClass, delegateDeps: deps, delegateType: R3FactoryDelegateType.Class }));
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| 36 | }
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| 37 | else if (useClassOnSelf) {
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| 38 | result = compileFactoryFunction(factoryMeta);
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| 39 | }
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| 40 | else {
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| 41 | result = compileFactoryFunction(tslib_1.__assign({}, factoryMeta, { delegate: meta.useClass, delegateType: R3FactoryDelegateType.Factory }));
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| 42 | }
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| 43 | }
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| 44 | else if (meta.useFactory !== undefined) {
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| 45 | result = compileFactoryFunction(tslib_1.__assign({}, factoryMeta, { delegate: meta.useFactory, delegateDeps: meta.userDeps || [], delegateType: R3FactoryDelegateType.Function }));
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| 46 | }
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| 47 | else if (meta.useValue !== undefined) {
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| 48 | // Note: it's safe to use `meta.useValue` instead of the `USE_VALUE in meta` check used for
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| 49 | // client code because meta.useValue is an Expression which will be defined even if the actual
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| 50 | // value is undefined.
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| 51 | result = compileFactoryFunction(tslib_1.__assign({}, factoryMeta, { expression: meta.useValue }));
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| 52 | }
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| 53 | else if (meta.useExisting !== undefined) {
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| 54 | // useExisting is an `inject` call on the existing token.
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| 55 | result = compileFactoryFunction(tslib_1.__assign({}, factoryMeta, { expression: o.importExpr(Identifiers.inject).callFn([meta.useExisting]) }));
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| 56 | }
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| 57 | else {
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| 58 | result = compileFactoryFunction(factoryMeta);
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| 59 | }
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| 60 | var token = meta.type;
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| 61 | var providedIn = meta.providedIn;
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| 62 | var expression = o.importExpr(Identifiers.ɵɵdefineInjectable).callFn([mapToMapExpression({ token: token, factory: result.factory, providedIn: providedIn })]);
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| 63 | var type = new o.ExpressionType(o.importExpr(Identifiers.InjectableDef, [typeWithParameters(meta.type, meta.typeArgumentCount)]));
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| 64 | return {
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| 65 | expression: expression,
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| 66 | type: type,
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| 67 | statements: result.statements,
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| 68 | };
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| 69 | }
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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 {InjectFlags} from './core';\nimport {Identifiers} from './identifiers';\nimport * as o from './output/output_ast';\nimport {R3DependencyMetadata, R3FactoryDelegateType, R3FactoryMetadata, compileFactoryFunction} from './render3/r3_factory';\nimport {mapToMapExpression, typeWithParameters} from './render3/util';\n\nexport interface InjectableDef {\n  expression: o.Expression;\n  type: o.Type;\n  statements: o.Statement[];\n}\n\nexport interface R3InjectableMetadata {\n  name: string;\n  type: o.Expression;\n  typeArgumentCount: number;\n  ctorDeps: R3DependencyMetadata[]|'invalid'|null;\n  providedIn: o.Expression;\n  useClass?: o.Expression;\n  useFactory?: o.Expression;\n  useExisting?: o.Expression;\n  useValue?: o.Expression;\n  userDeps?: R3DependencyMetadata[];\n}\n\nexport function compileInjectable(meta: R3InjectableMetadata): InjectableDef {\n  let result: {factory: o.Expression, statements: o.Statement[]}|null = null;\n\n  const factoryMeta = {\n    name: meta.name,\n    type: meta.type,\n    deps: meta.ctorDeps,\n    injectFn: Identifiers.inject,\n  };\n\n  if (meta.useClass !== undefined) {\n    // meta.useClass has two modes of operation. Either deps are specified, in which case `new` is\n    // used to instantiate the class with dependencies injected, or deps are not specified and\n    // the factory of the class is used to instantiate it.\n    //\n    // A special case exists for useClass: Type where Type is the injectable type itself and no\n    // deps are specified, in which case 'useClass' is effectively ignored.\n\n    const useClassOnSelf = meta.useClass.isEquivalent(meta.type);\n    let deps: R3DependencyMetadata[]|undefined = undefined;\n    if (meta.userDeps !== undefined) {\n      deps = meta.userDeps;\n    }\n\n    if (deps !== undefined) {\n      // factory: () => new meta.useClass(...deps)\n      result = compileFactoryFunction({\n        ...factoryMeta,\n        delegate: meta.useClass,\n        delegateDeps: deps,\n        delegateType: R3FactoryDelegateType.Class,\n      });\n    } else if (useClassOnSelf) {\n      result = compileFactoryFunction(factoryMeta);\n    } else {\n      result = compileFactoryFunction({\n        ...factoryMeta,\n        delegate: meta.useClass,\n        delegateType: R3FactoryDelegateType.Factory,\n      });\n    }\n  } else if (meta.useFactory !== undefined) {\n    result = compileFactoryFunction({\n      ...factoryMeta,\n      delegate: meta.useFactory,\n      delegateDeps: meta.userDeps || [],\n      delegateType: R3FactoryDelegateType.Function,\n    });\n  } else if (meta.useValue !== undefined) {\n    // Note: it's safe to use `meta.useValue` instead of the `USE_VALUE in meta` check used for\n    // client code because meta.useValue is an Expression which will be defined even if the actual\n    // value is undefined.\n    result = compileFactoryFunction({\n      ...factoryMeta,\n      expression: meta.useValue,\n    });\n  } else if (meta.useExisting !== undefined) {\n    // useExisting is an `inject` call on the existing token.\n    result = compileFactoryFunction({\n      ...factoryMeta,\n      expression: o.importExpr(Identifiers.inject).callFn([meta.useExisting]),\n    });\n  } else {\n    result = compileFactoryFunction(factoryMeta);\n  }\n\n  const token = meta.type;\n  const providedIn = meta.providedIn;\n\n  const expression = o.importExpr(Identifiers.ɵɵdefineInjectable).callFn([mapToMapExpression(\n      {token, factory: result.factory, providedIn})]);\n  const type = new o.ExpressionType(o.importExpr(\n      Identifiers.InjectableDef, [typeWithParameters(meta.type, meta.typeArgumentCount)]));\n\n  return {\n    expression,\n    type,\n    statements: result.statements,\n  };\n}\n"]} |
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