50bebb9e21
This introduces a string table into InternPool as well as a curious new field called `maps` which is an array list of array hash maps with void/void key/value. Some types such as enums, structs, and unions need to store mappings from field names to field index, or value to field index. In such cases, they will store the underlying field names and values directly, relying on one of these maps, stored separately, to provide lookup. This allows the InternPool to be serialized via simple array copies, omitting all the maps, which are only used for optimizing lookup based on field name or field value. When the InternPool is deserialized it can be loaded via simple array copies, and then as a post-processing step the field name maps can be generated as extra metadata that is tacked on. This commit provides two encodings for enums - one when the integer tag type is explicitly provided and one when it is not. This is simpler than the previous setup, which has three encodings. Previous sizes: * EnumSimple: 40 bytes + 16 bytes per field * EnumNumbered: 80 bytes + 24 bytes per field * EnumFull: 184 bytes + 24 bytes per field Sizes after this commit: * type_enum_explicit: 24 bytes + 8 bytes per field * type_enum_auto: 16 bytes + 4 bytes per field
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
Resources
- Introduction
- Download & Documentation
- Chapter 0 - Getting Started | ZigLearn.org
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- Frequently Asked Questions
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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.