| 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 core from '../../core';
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| 9 | import { DEFAULT_INTERPOLATION_CONFIG } from '../../ml_parser/interpolation_config';
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| 10 | import * as o from '../../output/output_ast';
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| 11 | import { ParseLocation, ParseSourceFile, ParseSourceSpan } from '../../parse_util';
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| 12 | import { Identifiers as R3 } from '../r3_identifiers';
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| 13 | import { createComponentType } from '../view/compiler';
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| 14 | import { DefinitionMap } from '../view/util';
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| 15 | import { createDirectiveDefinitionMap } from './directive';
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| 16 | import { generateForwardRef, toOptionalLiteralArray } from './util';
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| 17 | /**
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| 18 | * Compile a component declaration defined by the `R3ComponentMetadata`.
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| 19 | */
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| 20 | export function compileDeclareComponentFromMetadata(meta, template, additionalTemplateInfo) {
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| 21 | const definitionMap = createComponentDefinitionMap(meta, template, additionalTemplateInfo);
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| 22 | const expression = o.importExpr(R3.declareComponent).callFn([definitionMap.toLiteralMap()]);
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| 23 | const type = createComponentType(meta);
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| 24 | return { expression, type, statements: [] };
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| 25 | }
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| 26 | /**
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| 27 | * Gathers the declaration fields for a component into a `DefinitionMap`.
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| 28 | */
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| 29 | export function createComponentDefinitionMap(meta, template, templateInfo) {
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| 30 | const definitionMap = createDirectiveDefinitionMap(meta);
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| 31 | definitionMap.set('template', getTemplateExpression(template, templateInfo));
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| 32 | if (templateInfo.isInline) {
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| 33 | definitionMap.set('isInline', o.literal(true));
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| 34 | }
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| 35 | definitionMap.set('styles', toOptionalLiteralArray(meta.styles, o.literal));
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| 36 | definitionMap.set('components', compileUsedDirectiveMetadata(meta, directive => directive.isComponent === true));
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| 37 | definitionMap.set('directives', compileUsedDirectiveMetadata(meta, directive => directive.isComponent !== true));
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| 38 | definitionMap.set('pipes', compileUsedPipeMetadata(meta));
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| 39 | definitionMap.set('viewProviders', meta.viewProviders);
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| 40 | definitionMap.set('animations', meta.animations);
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| 41 | if (meta.changeDetection !== undefined) {
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| 42 | definitionMap.set('changeDetection', o.importExpr(R3.ChangeDetectionStrategy)
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| 43 | .prop(core.ChangeDetectionStrategy[meta.changeDetection]));
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| 44 | }
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| 45 | if (meta.encapsulation !== core.ViewEncapsulation.Emulated) {
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| 46 | definitionMap.set('encapsulation', o.importExpr(R3.ViewEncapsulation).prop(core.ViewEncapsulation[meta.encapsulation]));
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| 47 | }
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| 48 | if (meta.interpolation !== DEFAULT_INTERPOLATION_CONFIG) {
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| 49 | definitionMap.set('interpolation', o.literalArr([o.literal(meta.interpolation.start), o.literal(meta.interpolation.end)]));
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| 50 | }
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| 51 | if (template.preserveWhitespaces === true) {
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| 52 | definitionMap.set('preserveWhitespaces', o.literal(true));
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| 53 | }
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| 54 | return definitionMap;
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| 55 | }
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| 56 | function getTemplateExpression(template, templateInfo) {
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| 57 | // If the template has been defined using a direct literal, we use that expression directly
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| 58 | // without any modifications. This is ensures proper source mapping from the partially
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| 59 | // compiled code to the source file declaring the template. Note that this does not capture
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| 60 | // template literals referenced indirectly through an identifier.
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| 61 | if (templateInfo.inlineTemplateLiteralExpression !== null) {
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| 62 | return templateInfo.inlineTemplateLiteralExpression;
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| 63 | }
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| 64 | // If the template is defined inline but not through a literal, the template has been resolved
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| 65 | // through static interpretation. We create a literal but cannot provide any source span. Note
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| 66 | // that we cannot use the expression defining the template because the linker expects the template
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| 67 | // to be defined as a literal in the declaration.
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| 68 | if (templateInfo.isInline) {
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| 69 | return o.literal(templateInfo.content, null, null);
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| 70 | }
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| 71 | // The template is external so we must synthesize an expression node with
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| 72 | // the appropriate source-span.
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| 73 | const contents = templateInfo.content;
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| 74 | const file = new ParseSourceFile(contents, templateInfo.sourceUrl);
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| 75 | const start = new ParseLocation(file, 0, 0, 0);
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| 76 | const end = computeEndLocation(file, contents);
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| 77 | const span = new ParseSourceSpan(start, end);
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| 78 | return o.literal(contents, null, span);
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| 79 | }
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| 80 | function computeEndLocation(file, contents) {
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| 81 | const length = contents.length;
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| 82 | let lineStart = 0;
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| 83 | let lastLineStart = 0;
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| 84 | let line = 0;
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| 85 | do {
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| 86 | lineStart = contents.indexOf('\n', lastLineStart);
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| 87 | if (lineStart !== -1) {
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| 88 | lastLineStart = lineStart + 1;
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| 89 | line++;
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| 90 | }
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| 91 | } while (lineStart !== -1);
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| 92 | return new ParseLocation(file, length, line, length - lastLineStart);
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| 93 | }
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| 94 | /**
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| 95 | * Compiles the directives as registered in the component metadata into an array literal of the
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| 96 | * individual directives. If the component does not use any directives, then null is returned.
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| 97 | */
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| 98 | function compileUsedDirectiveMetadata(meta, predicate) {
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| 99 | const wrapType = meta.declarationListEmitMode !== 0 /* Direct */ ?
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| 100 | generateForwardRef :
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| 101 | (expr) => expr;
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| 102 | const directives = meta.directives.filter(predicate);
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| 103 | return toOptionalLiteralArray(directives, directive => {
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| 104 | const dirMeta = new DefinitionMap();
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| 105 | dirMeta.set('type', wrapType(directive.type));
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| 106 | dirMeta.set('selector', o.literal(directive.selector));
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| 107 | dirMeta.set('inputs', toOptionalLiteralArray(directive.inputs, o.literal));
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| 108 | dirMeta.set('outputs', toOptionalLiteralArray(directive.outputs, o.literal));
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| 109 | dirMeta.set('exportAs', toOptionalLiteralArray(directive.exportAs, o.literal));
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| 110 | return dirMeta.toLiteralMap();
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| 111 | });
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| 112 | }
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| 113 | /**
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| 114 | * Compiles the pipes as registered in the component metadata into an object literal, where the
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| 115 | * pipe's name is used as key and a reference to its type as value. If the component does not use
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| 116 | * any pipes, then null is returned.
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| 117 | */
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| 118 | function compileUsedPipeMetadata(meta) {
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| 119 | if (meta.pipes.size === 0) {
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| 120 | return null;
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| 121 | }
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| 122 | const wrapType = meta.declarationListEmitMode !== 0 /* Direct */ ?
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| 123 | generateForwardRef :
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| 124 | (expr) => expr;
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| 125 | const entries = [];
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| 126 | for (const [name, pipe] of meta.pipes) {
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| 127 | entries.push({ key: name, value: wrapType(pipe), quoted: true });
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| 128 | }
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| 129 | return o.literalMap(entries);
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| 130 | }
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| 131 | //# 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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 */\nimport * as core from '../../core';\nimport {DEFAULT_INTERPOLATION_CONFIG} from '../../ml_parser/interpolation_config';\nimport * as o from '../../output/output_ast';\nimport {ParseLocation, ParseSourceFile, ParseSourceSpan} from '../../parse_util';\nimport {Identifiers as R3} from '../r3_identifiers';\nimport {R3CompiledExpression} from '../util';\nimport {DeclarationListEmitMode, R3ComponentMetadata, R3UsedDirectiveMetadata} from '../view/api';\nimport {createComponentType} from '../view/compiler';\nimport {ParsedTemplate} from '../view/template';\nimport {DefinitionMap} from '../view/util';\n\nimport {R3DeclareComponentMetadata, R3DeclareUsedDirectiveMetadata} from './api';\nimport {createDirectiveDefinitionMap} from './directive';\nimport {generateForwardRef, toOptionalLiteralArray} from './util';\n\nexport interface DeclareComponentTemplateInfo {\n  /**\n   * The string contents of the template.\n   *\n   * This is the \"logical\" template string, after expansion of any escaped characters (for inline\n   * templates). This may differ from the actual template bytes as they appear in the .ts file.\n   */\n  content: string;\n\n  /**\n   * A full path to the file which contains the template.\n   *\n   * This can be either the original .ts file if the template is inline, or the .html file if an\n   * external file was used.\n   */\n  sourceUrl: string;\n\n  /**\n   * Whether the template was inline (using `template`) or external (using `templateUrl`).\n   */\n  isInline: boolean;\n\n  /**\n   * If the template was defined inline by a direct string literal, then this is that literal\n   * expression. Otherwise `null`, if the template was not defined inline or was not a literal.\n   */\n  inlineTemplateLiteralExpression: o.Expression|null;\n}\n\n/**\n * Compile a component declaration defined by the `R3ComponentMetadata`.\n */\nexport function compileDeclareComponentFromMetadata(\n    meta: R3ComponentMetadata, template: ParsedTemplate,\n    additionalTemplateInfo: DeclareComponentTemplateInfo): R3CompiledExpression {\n  const definitionMap = createComponentDefinitionMap(meta, template, additionalTemplateInfo);\n\n  const expression = o.importExpr(R3.declareComponent).callFn([definitionMap.toLiteralMap()]);\n  const type = createComponentType(meta);\n\n  return {expression, type, statements: []};\n}\n\n/**\n * Gathers the declaration fields for a component into a `DefinitionMap`.\n */\nexport function createComponentDefinitionMap(\n    meta: R3ComponentMetadata, template: ParsedTemplate,\n    templateInfo: DeclareComponentTemplateInfo): DefinitionMap<R3DeclareComponentMetadata> {\n  const definitionMap: DefinitionMap<R3DeclareComponentMetadata> =\n      createDirectiveDefinitionMap(meta);\n\n  definitionMap.set('template', getTemplateExpression(template, templateInfo));\n  if (templateInfo.isInline) {\n    definitionMap.set('isInline', o.literal(true));\n  }\n\n  definitionMap.set('styles', toOptionalLiteralArray(meta.styles, o.literal));\n  definitionMap.set(\n      'components',\n      compileUsedDirectiveMetadata(meta, directive => directive.isComponent === true));\n  definitionMap.set(\n      'directives',\n      compileUsedDirectiveMetadata(meta, directive => directive.isComponent !== true));\n  definitionMap.set('pipes', compileUsedPipeMetadata(meta));\n  definitionMap.set('viewProviders', meta.viewProviders);\n  definitionMap.set('animations', meta.animations);\n\n  if (meta.changeDetection !== undefined) {\n    definitionMap.set(\n        'changeDetection',\n        o.importExpr(R3.ChangeDetectionStrategy)\n            .prop(core.ChangeDetectionStrategy[meta.changeDetection]));\n  }\n  if (meta.encapsulation !== core.ViewEncapsulation.Emulated) {\n    definitionMap.set(\n        'encapsulation',\n        o.importExpr(R3.ViewEncapsulation).prop(core.ViewEncapsulation[meta.encapsulation]));\n  }\n  if (meta.interpolation !== DEFAULT_INTERPOLATION_CONFIG) {\n    definitionMap.set(\n        'interpolation',\n        o.literalArr([o.literal(meta.interpolation.start), o.literal(meta.interpolation.end)]));\n  }\n\n  if (template.preserveWhitespaces === true) {\n    definitionMap.set('preserveWhitespaces', o.literal(true));\n  }\n\n  return definitionMap;\n}\n\nfunction getTemplateExpression(\n    template: ParsedTemplate, templateInfo: DeclareComponentTemplateInfo): o.Expression {\n  // If the template has been defined using a direct literal, we use that expression directly\n  // without any modifications. This is ensures proper source mapping from the partially\n  // compiled code to the source file declaring the template. Note that this does not capture\n  // template literals referenced indirectly through an identifier.\n  if (templateInfo.inlineTemplateLiteralExpression !== null) {\n    return templateInfo.inlineTemplateLiteralExpression;\n  }\n\n  // If the template is defined inline but not through a literal, the template has been resolved\n  // through static interpretation. We create a literal but cannot provide any source span. Note\n  // that we cannot use the expression defining the template because the linker expects the template\n  // to be defined as a literal in the declaration.\n  if (templateInfo.isInline) {\n    return o.literal(templateInfo.content, null, null);\n  }\n\n  // The template is external so we must synthesize an expression node with\n  // the appropriate source-span.\n  const contents = templateInfo.content;\n  const file = new ParseSourceFile(contents, templateInfo.sourceUrl);\n  const start = new ParseLocation(file, 0, 0, 0);\n  const end = computeEndLocation(file, contents);\n  const span = new ParseSourceSpan(start, end);\n  return o.literal(contents, null, span);\n}\n\nfunction computeEndLocation(file: ParseSourceFile, contents: string): ParseLocation {\n  const length = contents.length;\n  let lineStart = 0;\n  let lastLineStart = 0;\n  let line = 0;\n  do {\n    lineStart = contents.indexOf('\\n', lastLineStart);\n    if (lineStart !== -1) {\n      lastLineStart = lineStart + 1;\n      line++;\n    }\n  } while (lineStart !== -1);\n\n  return new ParseLocation(file, length, line, length - lastLineStart);\n}\n\n/**\n * Compiles the directives as registered in the component metadata into an array literal of the\n * individual directives. If the component does not use any directives, then null is returned.\n */\nfunction compileUsedDirectiveMetadata(\n    meta: R3ComponentMetadata,\n    predicate: (directive: R3UsedDirectiveMetadata) => boolean): o.LiteralArrayExpr|null {\n  const wrapType = meta.declarationListEmitMode !== DeclarationListEmitMode.Direct ?\n      generateForwardRef :\n      (expr: o.Expression) => expr;\n\n  const directives = meta.directives.filter(predicate);\n  return toOptionalLiteralArray(directives, directive => {\n    const dirMeta = new DefinitionMap<R3DeclareUsedDirectiveMetadata>();\n    dirMeta.set('type', wrapType(directive.type));\n    dirMeta.set('selector', o.literal(directive.selector));\n    dirMeta.set('inputs', toOptionalLiteralArray(directive.inputs, o.literal));\n    dirMeta.set('outputs', toOptionalLiteralArray(directive.outputs, o.literal));\n    dirMeta.set('exportAs', toOptionalLiteralArray(directive.exportAs, o.literal));\n    return dirMeta.toLiteralMap();\n  });\n}\n\n/**\n * Compiles the pipes as registered in the component metadata into an object literal, where the\n * pipe's name is used as key and a reference to its type as value. If the component does not use\n * any pipes, then null is returned.\n */\nfunction compileUsedPipeMetadata(meta: R3ComponentMetadata): o.LiteralMapExpr|null {\n  if (meta.pipes.size === 0) {\n    return null;\n  }\n\n  const wrapType = meta.declarationListEmitMode !== DeclarationListEmitMode.Direct ?\n      generateForwardRef :\n      (expr: o.Expression) => expr;\n\n  const entries = [];\n  for (const [name, pipe] of meta.pipes) {\n    entries.push({key: name, value: wrapType(pipe), quoted: true});\n  }\n  return o.literalMap(entries);\n}\n"]} |
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