// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

'use strict';

import { Uri } from 'vscode';

import { InterpreterUri } from '../installer/types';

import { IAsyncDisposable, IDisposable, Resource } from '../types';

// tslint:disable-next-line:no-empty

export function noop() {}

export function using<T extends IDisposable>(disposable: T, func: (obj: T) => void) {

try {

func(disposable);

} finally {

disposable.dispose();

}

}

export async function usingAsync<T extends IAsyncDisposable, R>(

disposable: T,

func: (obj: T) => Promise<R>

): Promise<R> {

try {

return await func(disposable);

} finally {

await disposable.dispose();

}

}

/**

* Checking whether something is a Resource (Uri/undefined).

* Using `instanceof Uri` doesn't always work as the object is not an instance of Uri (at least not in tests).

* That's why VSC too has a helper method `URI.isUri` (though not public).

*

* @export

* @param {InterpreterUri} [resource]

* @returns {resource is Resource}

*/

export function isResource(resource?: InterpreterUri): resource is Resource {

if (!resource) {

return true;

}

const uri = resource as Uri;

return typeof uri.path === 'string' && typeof uri.scheme === 'string';

}

/**

* Checking whether something is a Uri.

* Using `instanceof Uri` doesn't always work as the object is not an instance of Uri (at least not in tests).

* That's why VSC too has a helper method `URI.isUri` (though not public).

*

* @export

* @param {InterpreterUri} [resource]

* @returns {resource is Uri}

*/

// tslint:disable-next-line: no-any

export function isUri(resource?: Uri | any): resource is Uri {

if (!resource) {

return false;

}

const uri = resource as Uri;

return typeof uri.path === 'string' && typeof uri.scheme === 'string';

}