1 | /**
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2 | * @license
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3 | * Copyright Google LLC 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 o from '../output/output_ast';
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9 | import { Identifiers as R3 } from './r3_identifiers';
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10 | import { jitOnlyGuardedExpression, refsToArray } from './util';
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11 | import { DefinitionMap } from './view/util';
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12 | /**
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13 | * Construct an `R3NgModuleDef` for the given `R3NgModuleMetadata`.
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14 | */
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15 | export function compileNgModule(meta) {
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16 | const { internalType, bootstrap, declarations, imports, exports, schemas, containsForwardDecls, emitInline, id } = meta;
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17 | const statements = [];
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18 | const definitionMap = new DefinitionMap();
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19 | definitionMap.set('type', internalType);
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20 | if (bootstrap.length > 0) {
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21 | definitionMap.set('bootstrap', refsToArray(bootstrap, containsForwardDecls));
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22 | }
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23 | // If requested to emit scope information inline, pass the `declarations`, `imports` and `exports`
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24 | // to the `ɵɵdefineNgModule()` call. The JIT compilation uses this.
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25 | if (emitInline) {
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26 | if (declarations.length > 0) {
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27 | definitionMap.set('declarations', refsToArray(declarations, containsForwardDecls));
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28 | }
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29 | if (imports.length > 0) {
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30 | definitionMap.set('imports', refsToArray(imports, containsForwardDecls));
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31 | }
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32 | if (exports.length > 0) {
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33 | definitionMap.set('exports', refsToArray(exports, containsForwardDecls));
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34 | }
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35 | }
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36 | // If not emitting inline, the scope information is not passed into `ɵɵdefineNgModule` as it would
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37 | // prevent tree-shaking of the declarations, imports and exports references.
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38 | else {
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39 | const setNgModuleScopeCall = generateSetNgModuleScopeCall(meta);
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40 | if (setNgModuleScopeCall !== null) {
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41 | statements.push(setNgModuleScopeCall);
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42 | }
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43 | }
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44 | if (schemas !== null && schemas.length > 0) {
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45 | definitionMap.set('schemas', o.literalArr(schemas.map(ref => ref.value)));
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46 | }
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47 | if (id !== null) {
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48 | definitionMap.set('id', id);
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49 | }
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50 | const expression = o.importExpr(R3.defineNgModule).callFn([definitionMap.toLiteralMap()], undefined, true);
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51 | const type = createNgModuleType(meta);
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52 | return { expression, type, statements };
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53 | }
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54 | /**
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55 | * This function is used in JIT mode to generate the call to `ɵɵdefineNgModule()` from a call to
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56 | * `ɵɵngDeclareNgModule()`.
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57 | */
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58 | export function compileNgModuleDeclarationExpression(meta) {
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59 | const definitionMap = new DefinitionMap();
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60 | definitionMap.set('type', new o.WrappedNodeExpr(meta.type));
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61 | if (meta.bootstrap !== undefined) {
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62 | definitionMap.set('bootstrap', new o.WrappedNodeExpr(meta.bootstrap));
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63 | }
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64 | if (meta.declarations !== undefined) {
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65 | definitionMap.set('declarations', new o.WrappedNodeExpr(meta.declarations));
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66 | }
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67 | if (meta.imports !== undefined) {
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68 | definitionMap.set('imports', new o.WrappedNodeExpr(meta.imports));
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69 | }
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70 | if (meta.exports !== undefined) {
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71 | definitionMap.set('exports', new o.WrappedNodeExpr(meta.exports));
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72 | }
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73 | if (meta.schemas !== undefined) {
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74 | definitionMap.set('schemas', new o.WrappedNodeExpr(meta.schemas));
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75 | }
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76 | if (meta.id !== undefined) {
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77 | definitionMap.set('id', new o.WrappedNodeExpr(meta.id));
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78 | }
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79 | return o.importExpr(R3.defineNgModule).callFn([definitionMap.toLiteralMap()]);
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80 | }
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81 | export function createNgModuleType({ type: moduleType, declarations, imports, exports }) {
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82 | return new o.ExpressionType(o.importExpr(R3.NgModuleDeclaration, [
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83 | new o.ExpressionType(moduleType.type), tupleTypeOf(declarations), tupleTypeOf(imports),
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84 | tupleTypeOf(exports)
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85 | ]));
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86 | }
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87 | /**
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88 | * Generates a function call to `ɵɵsetNgModuleScope` with all necessary information so that the
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89 | * transitive module scope can be computed during runtime in JIT mode. This call is marked pure
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90 | * such that the references to declarations, imports and exports may be elided causing these
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91 | * symbols to become tree-shakeable.
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92 | */
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93 | function generateSetNgModuleScopeCall(meta) {
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94 | const { adjacentType: moduleType, declarations, imports, exports, containsForwardDecls } = meta;
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95 | const scopeMap = new DefinitionMap();
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96 | if (declarations.length > 0) {
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97 | scopeMap.set('declarations', refsToArray(declarations, containsForwardDecls));
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98 | }
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99 | if (imports.length > 0) {
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100 | scopeMap.set('imports', refsToArray(imports, containsForwardDecls));
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101 | }
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102 | if (exports.length > 0) {
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103 | scopeMap.set('exports', refsToArray(exports, containsForwardDecls));
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104 | }
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105 | if (Object.keys(scopeMap.values).length === 0) {
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106 | return null;
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107 | }
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108 | // setNgModuleScope(...)
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109 | const fnCall = new o.InvokeFunctionExpr(
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110 | /* fn */ o.importExpr(R3.setNgModuleScope),
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111 | /* args */ [moduleType, scopeMap.toLiteralMap()]);
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112 | // (ngJitMode guard) && setNgModuleScope(...)
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113 | const guardedCall = jitOnlyGuardedExpression(fnCall);
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114 | // function() { (ngJitMode guard) && setNgModuleScope(...); }
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115 | const iife = new o.FunctionExpr(
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116 | /* params */ [],
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117 | /* statements */ [guardedCall.toStmt()]);
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118 | // (function() { (ngJitMode guard) && setNgModuleScope(...); })()
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119 | const iifeCall = new o.InvokeFunctionExpr(
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120 | /* fn */ iife,
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121 | /* args */ []);
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122 | return iifeCall.toStmt();
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123 | }
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124 | function tupleTypeOf(exp) {
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125 | const types = exp.map(ref => o.typeofExpr(ref.type));
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126 | return exp.length > 0 ? o.expressionType(o.literalArr(types)) : o.NONE_TYPE;
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127 | }
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128 | //# 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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 {R3DeclareNgModuleFacade} from '../compiler_facade_interface';\nimport * as o from '../output/output_ast';\n\nimport {Identifiers as R3} from './r3_identifiers';\nimport {jitOnlyGuardedExpression, R3CompiledExpression, R3Reference, refsToArray} from './util';\nimport {DefinitionMap} from './view/util';\n\n/**\n * Metadata required by the module compiler to generate a module def (`ɵmod`) for a type.\n */\nexport interface R3NgModuleMetadata {\n  /**\n   * An expression representing the module type being compiled.\n   */\n  type: R3Reference;\n\n  /**\n   * An expression representing the module type being compiled, intended for use within a class\n   * definition itself.\n   *\n   * This can differ from the outer `type` if the class is being compiled by ngcc and is inside\n   * an IIFE structure that uses a different name internally.\n   */\n  internalType: o.Expression;\n\n  /**\n   * An expression intended for use by statements that are adjacent (i.e. tightly coupled) to but\n   * not internal to a class definition.\n   *\n   * This can differ from the outer `type` if the class is being compiled by ngcc and is inside\n   * an IIFE structure that uses a different name internally.\n   */\n  adjacentType: o.Expression;\n\n  /**\n   * An array of expressions representing the bootstrap components specified by the module.\n   */\n  bootstrap: R3Reference[];\n\n  /**\n   * An array of expressions representing the directives and pipes declared by the module.\n   */\n  declarations: R3Reference[];\n\n  /**\n   * An array of expressions representing the imports of the module.\n   */\n  imports: R3Reference[];\n\n  /**\n   * An array of expressions representing the exports of the module.\n   */\n  exports: R3Reference[];\n\n  /**\n   * Whether to emit the selector scope values (declarations, imports, exports) inline into the\n   * module definition, or to generate additional statements which patch them on. Inline emission\n   * does not allow components to be tree-shaken, but is useful for JIT mode.\n   */\n  emitInline: boolean;\n\n  /**\n   * Whether to generate closure wrappers for bootstrap, declarations, imports, and exports.\n   */\n  containsForwardDecls: boolean;\n\n  /**\n   * The set of schemas that declare elements to be allowed in the NgModule.\n   */\n  schemas: R3Reference[]|null;\n\n  /** Unique ID or expression representing the unique ID of an NgModule. */\n  id: o.Expression|null;\n}\n\n/**\n * The shape of the object literal that is passed to the `ɵɵdefineNgModule()` call.\n */\ninterface R3NgModuleDefMap {\n  /**\n   * An expression representing the module type being compiled.\n   */\n  type: o.Expression;\n  /**\n   * An expression evaluating to an array of expressions representing the bootstrap components\n   * specified by the module.\n   */\n  bootstrap?: o.Expression;\n  /**\n   * An expression evaluating to an array of expressions representing the directives and pipes\n   * declared by the module.\n   */\n  declarations?: o.Expression;\n  /**\n   * An expression evaluating to an array of expressions representing the imports of the module.\n   */\n  imports?: o.Expression;\n  /**\n   * An expression evaluating to an array of expressions representing the exports of the module.\n   */\n  exports?: o.Expression;\n  /**\n   * A literal array expression containing the schemas that declare elements to be allowed in the\n   * NgModule.\n   */\n  schemas?: o.LiteralArrayExpr;\n  /**\n   * An expression evaluating to the unique ID of an NgModule.\n   * */\n  id?: o.Expression;\n}\n\n/**\n * Construct an `R3NgModuleDef` for the given `R3NgModuleMetadata`.\n */\nexport function compileNgModule(meta: R3NgModuleMetadata): R3CompiledExpression {\n  const {\n    internalType,\n    bootstrap,\n    declarations,\n    imports,\n    exports,\n    schemas,\n    containsForwardDecls,\n    emitInline,\n    id\n  } = meta;\n\n  const statements: o.Statement[] = [];\n  const definitionMap = new DefinitionMap<R3NgModuleDefMap>();\n  definitionMap.set('type', internalType);\n\n  if (bootstrap.length > 0) {\n    definitionMap.set('bootstrap', refsToArray(bootstrap, containsForwardDecls));\n  }\n\n  // If requested to emit scope information inline, pass the `declarations`, `imports` and `exports`\n  // to the `ɵɵdefineNgModule()` call. The JIT compilation uses this.\n  if (emitInline) {\n    if (declarations.length > 0) {\n      definitionMap.set('declarations', refsToArray(declarations, containsForwardDecls));\n    }\n\n    if (imports.length > 0) {\n      definitionMap.set('imports', refsToArray(imports, containsForwardDecls));\n    }\n\n    if (exports.length > 0) {\n      definitionMap.set('exports', refsToArray(exports, containsForwardDecls));\n    }\n  }\n\n  // If not emitting inline, the scope information is not passed into `ɵɵdefineNgModule` as it would\n  // prevent tree-shaking of the declarations, imports and exports references.\n  else {\n    const setNgModuleScopeCall = generateSetNgModuleScopeCall(meta);\n    if (setNgModuleScopeCall !== null) {\n      statements.push(setNgModuleScopeCall);\n    }\n  }\n\n  if (schemas !== null && schemas.length > 0) {\n    definitionMap.set('schemas', o.literalArr(schemas.map(ref => ref.value)));\n  }\n\n  if (id !== null) {\n    definitionMap.set('id', id);\n  }\n\n  const expression =\n      o.importExpr(R3.defineNgModule).callFn([definitionMap.toLiteralMap()], undefined, true);\n  const type = createNgModuleType(meta);\n\n  return {expression, type, statements};\n}\n\n/**\n * This function is used in JIT mode to generate the call to `ɵɵdefineNgModule()` from a call to\n * `ɵɵngDeclareNgModule()`.\n */\nexport function compileNgModuleDeclarationExpression(meta: R3DeclareNgModuleFacade): o.Expression {\n  const definitionMap = new DefinitionMap<R3NgModuleDefMap>();\n  definitionMap.set('type', new o.WrappedNodeExpr(meta.type));\n  if (meta.bootstrap !== undefined) {\n    definitionMap.set('bootstrap', new o.WrappedNodeExpr(meta.bootstrap));\n  }\n  if (meta.declarations !== undefined) {\n    definitionMap.set('declarations', new o.WrappedNodeExpr(meta.declarations));\n  }\n  if (meta.imports !== undefined) {\n    definitionMap.set('imports', new o.WrappedNodeExpr(meta.imports));\n  }\n  if (meta.exports !== undefined) {\n    definitionMap.set('exports', new o.WrappedNodeExpr(meta.exports));\n  }\n  if (meta.schemas !== undefined) {\n    definitionMap.set('schemas', new o.WrappedNodeExpr(meta.schemas));\n  }\n  if (meta.id !== undefined) {\n    definitionMap.set('id', new o.WrappedNodeExpr(meta.id));\n  }\n  return o.importExpr(R3.defineNgModule).callFn([definitionMap.toLiteralMap()]);\n}\n\nexport function createNgModuleType(\n    {type: moduleType, declarations, imports, exports}: R3NgModuleMetadata): o.ExpressionType {\n  return new o.ExpressionType(o.importExpr(R3.NgModuleDeclaration, [\n    new o.ExpressionType(moduleType.type), tupleTypeOf(declarations), tupleTypeOf(imports),\n    tupleTypeOf(exports)\n  ]));\n}\n\n/**\n * Generates a function call to `ɵɵsetNgModuleScope` with all necessary information so that the\n * transitive module scope can be computed during runtime in JIT mode. This call is marked pure\n * such that the references to declarations, imports and exports may be elided causing these\n * symbols to become tree-shakeable.\n */\nfunction generateSetNgModuleScopeCall(meta: R3NgModuleMetadata): o.Statement|null {\n  const {adjacentType: moduleType, declarations, imports, exports, containsForwardDecls} = meta;\n\n  const scopeMap = new DefinitionMap<\n      {declarations: o.Expression, imports: o.Expression, exports: o.Expression}>();\n\n  if (declarations.length > 0) {\n    scopeMap.set('declarations', refsToArray(declarations, containsForwardDecls));\n  }\n\n  if (imports.length > 0) {\n    scopeMap.set('imports', refsToArray(imports, containsForwardDecls));\n  }\n\n  if (exports.length > 0) {\n    scopeMap.set('exports', refsToArray(exports, containsForwardDecls));\n  }\n\n  if (Object.keys(scopeMap.values).length === 0) {\n    return null;\n  }\n\n  // setNgModuleScope(...)\n  const fnCall = new o.InvokeFunctionExpr(\n      /* fn */ o.importExpr(R3.setNgModuleScope),\n      /* args */[moduleType, scopeMap.toLiteralMap()]);\n\n  // (ngJitMode guard) && setNgModuleScope(...)\n  const guardedCall = jitOnlyGuardedExpression(fnCall);\n\n  // function() { (ngJitMode guard) && setNgModuleScope(...); }\n  const iife = new o.FunctionExpr(\n      /* params */[],\n      /* statements */[guardedCall.toStmt()]);\n\n  // (function() { (ngJitMode guard) && setNgModuleScope(...); })()\n  const iifeCall = new o.InvokeFunctionExpr(\n      /* fn */ iife,\n      /* args */[]);\n\n  return iifeCall.toStmt();\n}\n\nfunction tupleTypeOf(exp: R3Reference[]): o.Type {\n  const types = exp.map(ref => o.typeofExpr(ref.type));\n  return exp.length > 0 ? o.expressionType(o.literalArr(types)) : o.NONE_TYPE;\n}\n"]} |
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