Kod¶

Kod is a toy language that compiles to AArch64 (Apple Silicon) machine code for macOS. A Python frontend bootstraps the self-hosted compiler (sh_kodc), which compiles Kod programs — including itself.

func main() -> int64 {
    print("Hello, world!")
    return 0
}

$ uv run kod build hello.kod
$ ./build/apps/hello/hello
Hello, world!

Features¶

• Compiled to native ARM64 machine code (via as + ld)
• Static types: int64, str, bool, arrays [T], structs, enums, optionals T?, generics T[U, V]
• Pattern matching via match, plus if X is .Variant(bindings) sugar
• F-string interpolation (f"hello {name}"), auto-to_str for non-string interpolands
• Interfaces with vtable dispatch; primitives implement them via implicit boxing
• Error handling via T or Error, try / must / throw
• test "description" { ... } syntax with assert <expr> (source captured)
• Modules and imports (import "kod/ast", import "./helper")
• Self-hosted ARM64 codegen written in Kod itself

Status¶

The self-hosted compiler (sh_kodc) is the production path. The Python frontend (kod _interpret, kod _emit-asm) remains for development and bootstrapping.