Copyright (c) 2021 Zhenzhen Zhan

This software is about a programming language "FutureScript".

You may use or distribute this software free of charge, provided that the
software is not modified and this license file including the copyright notice is
not modified or deleted.

You may use or modify this software, or distribute the modified version free of
charge, provided that both of the following 2 conditions are met:

1. This license document, including the above copyright notice, shall be
included in the modified version.

2. If the modified version is not a programming language, then there's no naming
restriction. But if it's still a programming language, then the language's name
shall still contain the text "FutureScript" but not be exactly "FutureScript"
(for example, "MyFutureScript") and the modified version shall not be harmful.

Definitions in this document:

1. "You" means any person other than the copyright holder.

2. "Modified version" means the software after it has been modified by you.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.