Pony-AST 🐴 🌳

Pony library wrapping libponyc via C-FFI, so Pony programs can finally compile themselves. 🐴 👉 🐴

Current Status

This software is:

• Untested
• Dangerous
• Hacky
• hopelessly broken

It will:

• Leak memory
• Eat all the memory on your machine
• Segfault
• Steal all of your bitcoins

Use only if you know what you are doing!

Requirements

In order to make the current compiler work, and have it pick up the Pony standard library one needs to point the PONYPATH environment variable to the pony stdlib. If you have a pony installation you compiled yourself, it will most likely live in: ponyc-repository/packages. If you have a pre-compiled installation obtained via ponyup it might live in something like: $HOME/.local/share/ponyup/ponyc-release-<RELEASE-NUMBER>-<ARCH>-<SYSTEM>/packages.

Usage

The main entrypoint is the Compiler, that is running the pony compiler passes until (including) the expr pass and is emitting the produced ast_t structure in the Program class. It can be used to access packages, modules and entities, rerieve AST nodes at certain positions, go to definitions etc. etc.

use ast = "ast"

actor Main
  new create(env: Env) =>
    try
      let path = FilePath(FileAuth(env.root), env.args(env.args.size() - 1)?)
      match ast.Compiler.compile(env, path)
      | let program: ast.Program =>
        // do something with the parsed program AST
        env.out.print("OK")
      | let errors: Array[ast.Error] =>
        // do something with the compilation errors
        for e in errors.values() do
          env.err.print(e.msg)
        end
      end
    end