source: trip-planner-front/node_modules/@angular/core/schematics/migrations/undecorated-classes-with-di/decorator_rewrite/convert_directive_metadata.js@ 6a3a178

Last change on this file since 6a3a178 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1/**
2 * @license
3 * Copyright Google LLC All Rights Reserved.
4 *
5 * Use of this source code is governed by an MIT-style license that can be
6 * found in the LICENSE file at https://angular.io/license
7 */
8(function (factory) {
9 if (typeof module === "object" && typeof module.exports === "object") {
10 var v = factory(require, exports);
11 if (v !== undefined) module.exports = v;
12 }
13 else if (typeof define === "function" && define.amd) {
14 define("@angular/core/schematics/migrations/undecorated-classes-with-di/decorator_rewrite/convert_directive_metadata", ["require", "exports", "@angular/compiler", "typescript"], factory);
15 }
16})(function (require, exports) {
17 "use strict";
18 Object.defineProperty(exports, "__esModule", { value: true });
19 exports.convertDirectiveMetadataToExpression = exports.UnexpectedMetadataValueError = void 0;
20 const compiler_1 = require("@angular/compiler");
21 const ts = require("typescript");
22 /** Error that will be thrown if an unexpected value needs to be converted. */
23 class UnexpectedMetadataValueError extends Error {
24 }
25 exports.UnexpectedMetadataValueError = UnexpectedMetadataValueError;
26 /**
27 * Converts a directive metadata object into a TypeScript expression. Throws
28 * if metadata cannot be cleanly converted.
29 */
30 function convertDirectiveMetadataToExpression(metadata, resolveSymbolImport, createImport, convertProperty) {
31 if (typeof metadata === 'string') {
32 return ts.createStringLiteral(metadata);
33 }
34 else if (Array.isArray(metadata)) {
35 return ts.createArrayLiteral(metadata.map(el => convertDirectiveMetadataToExpression(el, resolveSymbolImport, createImport, convertProperty)));
36 }
37 else if (typeof metadata === 'number') {
38 return ts.createNumericLiteral(metadata.toString());
39 }
40 else if (typeof metadata === 'boolean') {
41 return metadata ? ts.createTrue() : ts.createFalse();
42 }
43 else if (typeof metadata === 'undefined') {
44 return ts.createIdentifier('undefined');
45 }
46 else if (typeof metadata === 'bigint') {
47 return ts.createBigIntLiteral(metadata.toString());
48 }
49 else if (typeof metadata === 'object') {
50 // In case there is a static symbol object part of the metadata, try to resolve
51 // the import expression of the symbol. If no import path could be resolved, an
52 // error will be thrown as the symbol cannot be converted into TypeScript AST.
53 if (metadata instanceof compiler_1.StaticSymbol) {
54 const resolvedImport = resolveSymbolImport(metadata);
55 if (resolvedImport === null) {
56 throw new UnexpectedMetadataValueError();
57 }
58 return createImport(resolvedImport, metadata.name);
59 }
60 const literalProperties = [];
61 for (const key of Object.keys(metadata)) {
62 const metadataValue = metadata[key];
63 let propertyValue = null;
64 // Allows custom conversion of properties in an object. This is useful for special
65 // cases where we don't want to store the enum values as integers, but rather use the
66 // real enum symbol. e.g. instead of `2` we want to use `ViewEncapsulation.None`.
67 if (convertProperty) {
68 propertyValue = convertProperty(key, metadataValue);
69 }
70 // In case the property value has not been assigned to an expression, we convert
71 // the resolved metadata value into a TypeScript expression.
72 if (propertyValue === null) {
73 propertyValue = convertDirectiveMetadataToExpression(metadataValue, resolveSymbolImport, createImport, convertProperty);
74 }
75 literalProperties.push(ts.createPropertyAssignment(getPropertyName(key), propertyValue));
76 }
77 return ts.createObjectLiteral(literalProperties, true);
78 }
79 throw new UnexpectedMetadataValueError();
80 }
81 exports.convertDirectiveMetadataToExpression = convertDirectiveMetadataToExpression;
82 /**
83 * Gets a valid property name from the given text. If the text cannot be used
84 * as unquoted identifier, the name will be wrapped in a string literal.
85 */
86 function getPropertyName(name) {
87 // Matches the most common identifiers that do not need quotes. Constructing a
88 // regular expression that matches the ECMAScript specification in order to determine
89 // whether quotes are needed is out of scope for this migration. For those more complex
90 // property names, we just always use quotes (when constructing AST from metadata).
91 if (/^[a-zA-Z_$]+$/.test(name)) {
92 return name;
93 }
94 return ts.createStringLiteral(name);
95 }
96});
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Throws\n * if metadata cannot be cleanly converted.\n */\nexport function convertDirectiveMetadataToExpression(\n    metadata: any, resolveSymbolImport: (symbol: StaticSymbol) => string | null,\n    createImport: (moduleName: string, name: string) => ts.Expression,\n    convertProperty?: (key: string, value: any) => ts.Expression | null): ts.Expression {\n  if (typeof metadata === 'string') {\n    return ts.createStringLiteral(metadata);\n  } else if (Array.isArray(metadata)) {\n    return ts.createArrayLiteral(metadata.map(\n        el => convertDirectiveMetadataToExpression(\n            el, resolveSymbolImport, createImport, convertProperty)));\n  } else if (typeof metadata === 'number') {\n    return ts.createNumericLiteral(metadata.toString());\n  } else if (typeof metadata === 'boolean') {\n    return metadata ? ts.createTrue() : ts.createFalse();\n  } else if (typeof metadata === 'undefined') {\n    return ts.createIdentifier('undefined');\n  } else if (typeof metadata === 'bigint') {\n    return ts.createBigIntLiteral(metadata.toString());\n  } else if (typeof metadata === 'object') {\n    // In case there is a static symbol object part of the metadata, try to resolve\n    // the import expression of the symbol. If no import path could be resolved, an\n    // error will be thrown as the symbol cannot be converted into TypeScript AST.\n    if (metadata instanceof StaticSymbol) {\n      const resolvedImport = resolveSymbolImport(metadata);\n      if (resolvedImport === null) {\n        throw new UnexpectedMetadataValueError();\n      }\n      return createImport(resolvedImport, metadata.name);\n    }\n\n    const literalProperties: ts.PropertyAssignment[] = [];\n\n    for (const key of Object.keys(metadata)) {\n      const metadataValue = metadata[key];\n      let propertyValue: ts.Expression|null = null;\n\n      // Allows custom conversion of properties in an object. This is useful for special\n      // cases where we don't want to store the enum values as integers, but rather use the\n      // real enum symbol. e.g. instead of `2` we want to use `ViewEncapsulation.None`.\n      if (convertProperty) {\n        propertyValue = convertProperty(key, metadataValue);\n      }\n\n      // In case the property value has not been assigned to an expression, we convert\n      // the resolved metadata value into a TypeScript expression.\n      if (propertyValue === null) {\n        propertyValue = convertDirectiveMetadataToExpression(\n            metadataValue, resolveSymbolImport, createImport, convertProperty);\n      }\n\n      literalProperties.push(ts.createPropertyAssignment(getPropertyName(key), propertyValue));\n    }\n\n    return ts.createObjectLiteral(literalProperties, true);\n  }\n\n  throw new UnexpectedMetadataValueError();\n}\n\n/**\n * Gets a valid property name from the given text. If the text cannot be used\n * as unquoted identifier, the name will be wrapped in a string literal.\n */\nfunction getPropertyName(name: string): string|ts.StringLiteral {\n  // Matches the most common identifiers that do not need quotes. Constructing a\n  // regular expression that matches the ECMAScript specification in order to determine\n  // whether quotes are needed is out of scope for this migration. For those more complex\n  // property names, we just always use quotes (when constructing AST from metadata).\n  if (/^[a-zA-Z_$]+$/.test(name)) {\n    return name;\n  }\n  return ts.createStringLiteral(name);\n}\n"]}
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