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AstGen was calling findLineColumn() for every sibling Decl, using the parent Decl as the starting point for the search for newlines. This resulted in poor performance for large numbers of Decls with the same parent. The solution is simple: since AstGen progresses monotonically through the AST, keep a single cursor into the source file, and whenever line/column information is needed, advance the cursor. This guarantees O(N) on the number of bytes in the file. Perf: As an example I ran ast-check on zigwin32/win32/everything.zig (a 17 MiB file) in master branch, and after this commit. With master branch, I killed the process after 17 seconds out of boredom. With this commit, it completed in 300 milliseconds. Closes #9234
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.