Initial VS Code 1.19 source merge (#571)

* Initial 1.19 xcopy

* Fix yarn build

* Fix numerous build breaks

* Next batch of build break fixes

* More build break fixes

* Runtime breaks

* Additional post merge fixes

* Fix windows setup file

* Fix test failures.

* Update license header blocks to refer to source eula

src/vs/platform/state/node/stateService.ts

@@ -0,0 +1,110 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as path from 'path';
+import * as fs from 'original-fs';
+import { IEnvironmentService } from 'vs/platform/environment/common/environment';
+import { writeFileAndFlushSync } from 'vs/base/node/extfs';
+import { isUndefined, isUndefinedOrNull } from 'vs/base/common/types';
+import { IStateService } from 'vs/platform/state/common/state';
+import { ILogService } from 'vs/platform/log/common/log';
+
+export class FileStorage {
+
+	private database: object = null;
+
+	constructor(private dbPath: string, private onError: (error) => void) { }
+
+	private ensureLoaded(): void {
+		if (!this.database) {
+			this.database = this.loadSync();
+		}
+	}
+
+	public getItem<T>(key: string, defaultValue?: T): T {
+		this.ensureLoaded();
+
+		const res = this.database[key];
+		if (isUndefinedOrNull(res)) {
+			return defaultValue;
+		}
+
+		return res;
+	}
+
+	public setItem(key: string, data: any): void {
+		this.ensureLoaded();
+
+		// Remove an item when it is undefined or null
+		if (isUndefinedOrNull(data)) {
+			return this.removeItem(key);
+		}
+
+		// Shortcut for primitives that did not change
+		if (typeof data === 'string' || typeof data === 'number' || typeof data === 'boolean') {
+			if (this.database[key] === data) {
+				return;
+			}
+		}
+
+		this.database[key] = data;
+		this.saveSync();
+	}
+
+	public removeItem(key: string): void {
+		this.ensureLoaded();
+
+		// Only update if the key is actually present (not undefined)
+		if (!isUndefined(this.database[key])) {
+			this.database[key] = void 0;
+			this.saveSync();
+		}
+	}
+
+	private loadSync(): object {
+		try {
+			return JSON.parse(fs.readFileSync(this.dbPath).toString()); // invalid JSON or permission issue can happen here
+		} catch (error) {
+			if (error && error.code !== 'ENOENT') {
+				this.onError(error);
+			}
+
+			return {};
+		}
+	}
+
+	private saveSync(): void {
+		try {
+			writeFileAndFlushSync(this.dbPath, JSON.stringify(this.database, null, 4)); // permission issue can happen here
+		} catch (error) {
+			this.onError(error);
+		}
+	}
+}
+
+export class StateService implements IStateService {
+
+	_serviceBrand: any;
+
+	private fileStorage: FileStorage;
+
+	constructor( @IEnvironmentService environmentService: IEnvironmentService, @ILogService logService: ILogService) {
+		this.fileStorage = new FileStorage(path.join(environmentService.userDataPath, 'storage.json'), error => logService.error(error));
+	}
+
+	public getItem<T>(key: string, defaultValue?: T): T {
+		return this.fileStorage.getItem(key, defaultValue);
+	}
+
+	public setItem(key: string, data: any): void {
+		this.fileStorage.setItem(key, data);
+	}
+
+	public removeItem(key: string): void {
+		this.fileStorage.removeItem(key);
+	}
+}