5881a2d637
Unlike unions and structs, enums are actually *encoded* into the InternPool directly, rather than using the SegmentedList trick. This results in them being quite compact, and greatly improved the ergonomics of using enum types throughout the compiler. It did however require introducing a new concept to the InternPool which is an "incomplete" item - something that is added to gain a permanent Index, but which is then mutated in place. This was necessary because enum tag values and tag types may reference the namespaces created by the enum itself, which required constructing the namespace, decl, and calling analyzeDecl on the decl, which required the decl value, which required the enum type, which required an InternPool index to be assigned and for it to be meaningful. The API for updating enums in place turned out to be quite slick and efficient - the methods directly populate pre-allocated arrays and return the information necessary to output the same compilation errors as before.
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
Resources
- Introduction
- Download & Documentation
- Chapter 0 - Getting Started | ZigLearn.org
- Community
- Contributing
- Code of Conduct
- Frequently Asked Questions
- Community Projects
Installation
- download a pre-built binary
- install from a package manager
- build from source
- bootstrap zig for any target
License
The ultimate goal of the Zig project is to serve users. As a first-order effect, this means users of the compiler, helping programmers to write better software. Even more important, however, are the end-users.
Zig is intended to be used to help end-users accomplish their goals. Zig should be used to empower end-users, never to exploit them financially, or to limit their freedom to interact with hardware or software in any way.
However, such problems are best solved with social norms, not with software licenses. Any attempt to complicate the software license of Zig would risk compromising the value Zig provides.
Therefore, Zig is available under the MIT (Expat) License, and comes with a humble request: use it to make software better serve the needs of end-users.
This project redistributes code from other projects, some of which have other licenses besides MIT. Such licenses are generally similar to the MIT license for practical purposes. See the subdirectories and files inside lib/ for more details.