135 lines
4.2 KiB
JavaScript
Executable file
135 lines
4.2 KiB
JavaScript
Executable file
"use strict";
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/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.applyToUpdateRecorder = exports.ReplaceChange = exports.RemoveChange = exports.InsertChange = exports.NoopChange = void 0;
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/**
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* An operation that does nothing.
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*/
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class NoopChange {
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description = 'No operation.';
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order = Infinity;
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path = null;
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apply() {
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return Promise.resolve();
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}
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}
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exports.NoopChange = NoopChange;
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/**
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* Will add text to the source code.
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*/
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class InsertChange {
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path;
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pos;
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toAdd;
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order;
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description;
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constructor(path, pos, toAdd) {
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this.path = path;
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this.pos = pos;
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this.toAdd = toAdd;
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if (pos < 0) {
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throw new Error('Negative positions are invalid');
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}
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this.description = `Inserted ${toAdd} into position ${pos} of ${path}`;
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this.order = pos;
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}
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/**
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* This method does not insert spaces if there is none in the original string.
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*/
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apply(host) {
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return host.read(this.path).then((content) => {
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const prefix = content.substring(0, this.pos);
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const suffix = content.substring(this.pos);
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return host.write(this.path, `${prefix}${this.toAdd}${suffix}`);
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});
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}
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}
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exports.InsertChange = InsertChange;
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/**
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* Will remove text from the source code.
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*/
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class RemoveChange {
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path;
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pos;
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toRemove;
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order;
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description;
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constructor(path, pos, toRemove) {
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this.path = path;
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this.pos = pos;
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this.toRemove = toRemove;
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if (pos < 0) {
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throw new Error('Negative positions are invalid');
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}
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this.description = `Removed ${toRemove} into position ${pos} of ${path}`;
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this.order = pos;
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}
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apply(host) {
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return host.read(this.path).then((content) => {
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const prefix = content.substring(0, this.pos);
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const suffix = content.substring(this.pos + this.toRemove.length);
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// TODO: throw error if toRemove doesn't match removed string.
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return host.write(this.path, `${prefix}${suffix}`);
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});
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}
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}
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exports.RemoveChange = RemoveChange;
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/**
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* Will replace text from the source code.
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*/
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class ReplaceChange {
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path;
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pos;
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oldText;
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newText;
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order;
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description;
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constructor(path, pos, oldText, newText) {
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this.path = path;
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this.pos = pos;
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this.oldText = oldText;
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this.newText = newText;
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if (pos < 0) {
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throw new Error('Negative positions are invalid');
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}
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this.description = `Replaced ${oldText} into position ${pos} of ${path} with ${newText}`;
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this.order = pos;
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}
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apply(host) {
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return host.read(this.path).then((content) => {
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const prefix = content.substring(0, this.pos);
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const suffix = content.substring(this.pos + this.oldText.length);
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const text = content.substring(this.pos, this.pos + this.oldText.length);
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if (text !== this.oldText) {
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return Promise.reject(new Error(`Invalid replace: "${text}" != "${this.oldText}".`));
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}
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// TODO: throw error if oldText doesn't match removed string.
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return host.write(this.path, `${prefix}${this.newText}${suffix}`);
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});
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}
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}
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exports.ReplaceChange = ReplaceChange;
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function applyToUpdateRecorder(recorder, changes) {
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for (const change of changes) {
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if (change instanceof InsertChange) {
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recorder.insertLeft(change.pos, change.toAdd);
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}
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else if (change instanceof RemoveChange) {
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recorder.remove(change.order, change.toRemove.length);
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}
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else if (change instanceof ReplaceChange) {
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recorder.remove(change.order, change.oldText.length);
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recorder.insertLeft(change.order, change.newText);
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}
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else if (!(change instanceof NoopChange)) {
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throw new Error('Unknown Change type encountered when updating a recorder.');
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}
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}
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}
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exports.applyToUpdateRecorder = applyToUpdateRecorder;
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