David Mak
f09f3c27a5
For some reason, when unifying a function call parameter with an
argument, subsequent calls to the same function will only accept the
type of the substituted argument.
This affect snippets like:
```
def make1() -> C[Literal[1]]:
return ...
def make2() -> C[Literal[2]]:
return ...
def consume(instance: C[Literal[1, 2]]):
pass
consume(make1())
consume(make2())
```
The last statement will result in a compiler error, as the parameter of
consume is replaced with C[Literal[1]].
We fix this by getting a snapshot before performing unification, and
restoring the snapshot after unification succeeds.
|
||
|---|---|---|
| nac3artiq | ||
| nac3ast | ||
| nac3core | ||
| nac3ld | ||
| nac3parser | ||
| nac3standalone | ||
| nix | ||
| runkernel | ||
| .gitignore | ||
| Cargo.lock | ||
| Cargo.toml | ||
| flake.lock | ||
| flake.nix | ||
| nac3.svg | ||
| README.md | ||
| rustfmt.toml | ||
NAC3
NAC3 is a major, backward-incompatible rewrite of the compiler for the ARTIQ physics experiment control and data acquisition system. It features greatly improved compilation speeds, a much better type system, and more predictable and transparent operation.
NAC3 has a modular design and its applicability reaches beyond ARTIQ. The nac3core module does not contain anything specific to ARTIQ, and can be used in any project that requires compiling Python to machine code.
WARNING: NAC3 is currently experimental software and several important features are not implemented yet.
Packaging
NAC3 is packaged using the Nix Flakes system. Install Nix 2.8+ and enable flakes by adding experimental-features = nix-command flakes to nix.conf (e.g. ~/.config/nix/nix.conf).
Try NAC3
Linux
After setting up Nix as above, use nix shell git+https://github.com/m-labs/artiq.git?ref=nac3 to get a shell with the NAC3 version of ARTIQ. See the examples directory in ARTIQ (nac3 Git branch) for some samples of NAC3 kernel code.
Windows
Install MSYS2, and open "MSYS2 CLANG64". Edit /etc/pacman.conf to add:
[artiq]
SigLevel = Optional TrustAll
Server = https://msys2.m-labs.hk/artiq-nac3
Then run the following commands:
pacman -Syu
pacman -S mingw-w64-clang-x86_64-artiq
For developers
This repository contains:
nac3ast: Python abstract syntax tree definition (based on RustPython).nac3parser: Python parser (based on RustPython).nac3core: Core compiler library, containing type-checking and code generation.nac3standalone: Standalone compiler tool (core language only).nac3ld: Minimalist RISC-V and ARM linker.nac3artiq: Integration with ARTIQ and implementation of ARTIQ-specific extensions to the core language.runkernel: Simple program that runs compiled ARTIQ kernels on the host and displays RTIO operations. Useful for testing without hardware.
Use nix develop in this repository to enter a development shell.
If you are using a different shell than bash you can use e.g. nix develop --command fish.
Build NAC3 with cargo build --release. See the demonstrations in nac3artiq and nac3standalone.