#source-code #low-level #expr #expression #numbers #pattern #block #lex

yanked zeta

Compiler for the Zeta programming language

7 releases

0.1.6 Sep 25, 2019
0.1.5 Aug 14, 2019

22 downloads per month

MIT license

5.5K SLoC

Zeta Logo

Zeta Language

A low level programming language for high performance applications, featuring many modern syntactical and semantic conveniences with a clear and consistent design


Planned Features

  • Low level (raw memory access / pointer arithmetic)
  • Lightweight, opt-in standard library
  • Simple, consistent, context-free, zero lookahead grammar
  • Expression based control flow
  • Pattern matching & destructuring
  • Modular, header-free source files
  • Simple C interop/FFI
  • Tuple and sum types
  • Multiple enumeration types
  • Methods and associate values for all types
  • Operator overloads
  • Type traits
  • Generics
  • Procedural meta programming
  • Compile time function execution

Code Basis

(Internal, compiler dependencies)

Project Status

This project is in its very early days, but a list of features that have been completed so far are as follows:



Because Zeta uses experimental feature flags (specifically try_trait and bind_by_move_pattern_guards currently), you will need to install nightly Rust.

You can install the specific recommended/tested nightly version with rustup toolchain install nightly-2019-07-31, and set it to the default to be used by cargo with rustup default nightly-2019-07-31

Or, you can try the latest nightly Rust with rustup toolchain install nightly, and set it to the default to be used by cargo with rustup default nightly

You will also need to install RLS for the specific nightly version you're using. If you're using VS Code, simply restart your editor after setting the default and it should prompt you to install RLS.


Clone the repo by running

git clone https://github.com/zeta-lang/zeta

Build with the typical cargo commands


Currently the driver application is capable of accepting source files and a few config flags via the command line. The full pipeline is not yet implemented, so no binary will be produced, but the various stages implemented can produce debug outputs.


zeta [-flag]* [-option=value]* path/to/source.z [path/to/source.z]*


  • help - Print a help message
  • show_path - Print the path of each source file as it is loaded
  • show_src - Print the content of each source file as it is loaded
  • show_lex - Print a debug representation of the token stream output by the lexical analyzer for each source file
  • show_ast - Print a debug representation of the abstract syntax tree output by the parser for each source file
  • show_args - Print a debug representation of the internal arguments structure
  • no_excerpts - Disable printing the section of source code an error came from when outputting error messages
  • uncolored - Disable ANSI color codes for compiler messages


  • max_errors = usize - The maximum number of errors to allow before terminating the processing of a source file [Default: 20]
  • excerpt_len = usize - The maximum number of lines to show in a source code excerpt [Default: 5]

VS Code Integration

Visual Studio Code (Not to be confused with Visual Studio, they are totally separate products) is the recommended editor for developing Zeta. It is a fast and highly customizable text editor with some IDE-like features without the bulk, strict pipeline, or platform limitations of systems like Visual Studio. It is a free download and available for both platforms supported by Zeta

Syntax Highlighting Extension

There is an extension to enable syntax highlighting for Zeta, available from source here: https://github.com/zeta-lang/zeta-syntax

Editor Tasks

VS Code editor tasks are preconfigured for most build script actions in .vscode/tasks.json

To run any task press Ctrl + Shift + B and select the task you want from the drop down menu

Debug Launch Config

Debug launch configs for stepping through the driver are included for vsdbg, gdb and lldb debuggers, in .vscode/launch.json



~138K SLoC