source: trip-planner-front/node_modules/@angular/compiler/src/ast_path.js@ eed0bf8

Last change on this file since eed0bf8 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/compiler/src/ast_path", ["require", "exports"], factory);
15 }
16})(function (require, exports) {
17 "use strict";
18 Object.defineProperty(exports, "__esModule", { value: true });
19 exports.AstPath = void 0;
20 /**
21 * A path is an ordered set of elements. Typically a path is to a
22 * particular offset in a source file. The head of the list is the top
23 * most node. The tail is the node that contains the offset directly.
24 *
25 * For example, the expression `a + b + c` might have an ast that looks
26 * like:
27 * +
28 * / \
29 * a +
30 * / \
31 * b c
32 *
33 * The path to the node at offset 9 would be `['+' at 1-10, '+' at 7-10,
34 * 'c' at 9-10]` and the path the node at offset 1 would be
35 * `['+' at 1-10, 'a' at 1-2]`.
36 */
37 var AstPath = /** @class */ (function () {
38 function AstPath(path, position) {
39 if (position === void 0) { position = -1; }
40 this.path = path;
41 this.position = position;
42 }
43 Object.defineProperty(AstPath.prototype, "empty", {
44 get: function () {
45 return !this.path || !this.path.length;
46 },
47 enumerable: false,
48 configurable: true
49 });
50 Object.defineProperty(AstPath.prototype, "head", {
51 get: function () {
52 return this.path[0];
53 },
54 enumerable: false,
55 configurable: true
56 });
57 Object.defineProperty(AstPath.prototype, "tail", {
58 get: function () {
59 return this.path[this.path.length - 1];
60 },
61 enumerable: false,
62 configurable: true
63 });
64 AstPath.prototype.parentOf = function (node) {
65 return node && this.path[this.path.indexOf(node) - 1];
66 };
67 AstPath.prototype.childOf = function (node) {
68 return this.path[this.path.indexOf(node) + 1];
69 };
70 AstPath.prototype.first = function (ctor) {
71 for (var i = this.path.length - 1; i >= 0; i--) {
72 var item = this.path[i];
73 if (item instanceof ctor)
74 return item;
75 }
76 };
77 AstPath.prototype.push = function (node) {
78 this.path.push(node);
79 };
80 AstPath.prototype.pop = function () {
81 return this.path.pop();
82 };
83 return AstPath;
84 }());
85 exports.AstPath = AstPath;
86});
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