| 1 | "use strict";
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| 2 | /**
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| 3 | * @license
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| 4 | * Copyright Google LLC All Rights Reserved.
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| 5 | *
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| 6 | * Use of this source code is governed by an MIT-style license that can be
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| 7 | * found in the LICENSE file at https://angular.io/license
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| 8 | */
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| 9 | Object.defineProperty(exports, "__esModule", { value: true });
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| 10 | exports.removeElementFromArrayExpression = exports.getParentSyntaxList = void 0;
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| 11 | const ts = require("typescript");
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| 12 | /**
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| 13 | * Retrieves the parent syntax list of the given node. A syntax list node is usually
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| 14 | * hidden from the default AST node hierarchy because it only contains information that
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| 15 | * is need when printing a node. e.g. it contains information about comma positions in
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| 16 | * an array literal expression.
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| 17 | */
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| 18 | function getParentSyntaxList(node) {
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| 19 | if (!node.parent) {
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| 20 | return null;
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| 21 | }
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| 22 | const parent = node.parent;
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| 23 | const { pos, end } = node;
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| 24 | for (const child of parent.getChildren()) {
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| 25 | if (child.pos > end || child === node) {
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| 26 | return null;
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| 27 | }
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| 28 | if (child.kind === ts.SyntaxKind.SyntaxList && child.pos <= pos && child.end >= end) {
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| 29 | return child;
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| 30 | }
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| 31 | }
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| 32 | return null;
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| 33 | }
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| 34 | exports.getParentSyntaxList = getParentSyntaxList;
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| 35 | /** Looks for the trailing comma of the given element within the syntax list. */
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| 36 | function findTrailingCommaToken(list, element) {
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| 37 | let foundElement = false;
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| 38 | for (let child of list.getChildren()) {
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| 39 | if (!foundElement && child === element) {
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| 40 | foundElement = true;
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| 41 | }
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| 42 | else if (foundElement) {
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| 43 | if (child.kind === ts.SyntaxKind.CommaToken) {
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| 44 | return child;
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| 45 | }
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| 46 | break;
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| 47 | }
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| 48 | }
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| 49 | return null;
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| 50 | }
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| 51 | /** Removes a given element from its parent array literal expression. */
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| 52 | function removeElementFromArrayExpression(element, recorder) {
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| 53 | recorder.remove(element.getFullStart(), element.getFullWidth());
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| 54 | const syntaxList = getParentSyntaxList(element);
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| 55 | if (!syntaxList) {
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| 56 | return;
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| 57 | }
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| 58 | // if there is a trailing comma token for the element, we need to remove it
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| 59 | // because otherwise the array literal expression will have syntax failures.
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| 60 | const trailingComma = findTrailingCommaToken(syntaxList, element);
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| 61 | if (trailingComma !== null) {
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| 62 | recorder.remove(trailingComma.getFullStart(), trailingComma.getFullWidth());
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| 63 | }
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| 64 | }
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| 65 | exports.removeElementFromArrayExpression = removeElementFromArrayExpression;
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| 66 | //# 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xpc3QsIGVsZW1lbnQpO1xuICBpZiAodHJhaWxpbmdDb21tYSAhPT0gbnVsbCkge1xuICAgIHJlY29yZGVyLnJlbW92ZSh0cmFpbGluZ0NvbW1hLmdldEZ1bGxTdGFydCgpLCB0cmFpbGluZ0NvbW1hLmdldEZ1bGxXaWR0aCgpKTtcbiAgfVxufVxuIl19 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