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IGI-111 30f869a3a8
Implement OR match pattern (#4348) 
## Description

Allow users to specify match patters such as:

```sway
let x = 1;
match x {
  0 | 1 => true,
  _ => false
}
```

We also check that all patterns in a disjunction declare the same set of
variables (not doing so is an error).

Fix https://github.com/FuelLabs/sway/issues/769

This requires a change in the pattern matching analysis to remove the
assumption that a specialized matrix of a vector pattern is always a
vector, which is now no longer true because or patterns can generate
multiple branches and therefore multiple rows.

## Checklist

- [x] I have linked to any relevant issues.
- [x] I have commented my code, particularly in hard-to-understand
areas.
- [x] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [x] I have added tests that prove my fix is effective or that my
feature works.
- [x] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [x] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [x] I have requested a review from the relevant team or maintainers.

Co-authored-by: Joshua Batty <joshpbatty@gmail.com>
2023-04-18 22:08:17 +00:00
..
src Implement OR match pattern (#4348) 2023-04-18 22:08:17 +00:00
theme Updated the sway.js file by adding mod and type in keyword (#4427) 2023-04-12 22:39:45 +00:00
.gitignore Introduce the Sway reference, a more technical Sway source of documentation. (#2562) 2022-12-08 21:53:09 +00:00
book.toml Introduce the Sway reference, a more technical Sway source of documentation. (#2562) 2022-12-08 21:53:09 +00:00
README.md Introduce the Sway reference, a more technical Sway source of documentation. (#2562) 2022-12-08 21:53:09 +00:00

README.md

The Sway Reference

Setup

If you wish contribute to this reference:

  1. Install Rust if it's not installed.

  2. Install mdbook.

    cargo install mdbook

  3. To build the book, ensure you are in /sway/sway-book and run:

    mdbook build

  4. To serve a hot-reloading instance of the book in your browser, run:

    mdbook serve --open