v0.3.3

Full Changelog: v0.3.0...v0.3.3

Vix Compiler v0.3.3 Release Notes

Release Date: June 13, 2026

Overview

Vix v0.3.3 focuses on match expression enhancements, making match more powerful and ergonomic. Key improvements include using match as an expression, supporting member access as scrutinee, and adding multi-pattern arms with |.

What's New

Match Expression Enhancements

Match as Expression

match can now be used as an expression that returns a value:

let result = match tag {
    "int" -> 1
    "bool" -> 2
    _ -> 0
}

This enables more concise code when assigning values based on pattern matching.

Member Access as Scrutinee

Match expressions now support member access expressions as the scrutinee:

match expr.tag {
    "int" -> "integer"
    "string" -> "text"
    _ -> "other"
}

Previously, only simple identifiers and literals were supported as the scrutinee.

Multi-Pattern Arms

Match expressions now support multiple patterns separated by | (pipe) for the same arm:

match tag {
    "int" | "bool" | "string" -> "Literal"
    "ident" -> "Identifier"
    "binop" -> "BinaryExpression"
    _ -> "Unknown"
}

This desugars to OR conditions: (tag == "int") or (tag == "bool") or (tag == "string").

Bug Fixes

Member Access Scrutinee

Fixed a bug where match with member access expressions (e.g., match expr.tag { ... }) would fail at runtime. The clone_match_scrutinee function now correctly handles AST_MEMBER_ACCESS nodes.

Code Changes

Modified Files

• src/parser/parser.y: Added match expression, member access scrutinee, and multi-pattern arm support
• include/ast.h: Added is_multi_pattern field to assign node for multi-pattern match arms

Installation

From Source

git clone https://github.com/vixlang/Vix-lang.git
cd Vix-lang
mkdir build && cd build
cmake ..
make
sudo make install

Using Pre-built Binaries

Download the appropriate binary for your platform from the releases page.

Upgrading

This release is backward compatible. No code changes are required to upgrade from v0.3.2.

Contributors

• Vix Language Team

Feedback

Please report any issues or feature requests on our GitHub Issues page.

---

For more information about the Vix programming language, visit vixlang.github.io.