rust/hgcli/src/main.rs
author Martin von Zweigbergk <martinvonz@google.com>
Thu, 01 Oct 2020 09:09:35 -0700
changeset 45620 426294d06ddc
parent 44729 26ce8e751503
permissions -rw-r--r--
rust: move rustfmt.toml to repo root so it can be used by `hg fix` `hg fix` runs the formatters from the repo root so it doesn't pick up the `rustfmt.toml` configs we had in each the `hg-core`, `hg-cpython`, and `rhg` packages, which resulted in warnings about `async fn` not existing in Rust 2015. This patch moves the `rustfmt.toml` file to the root so `hg fix` will use it. By putting the `rustfmt.toml` file in a higher-level directory, it also applies to the `chg` and `hgcli` packages. That makes `test-check-rust-format.t` fail, so this patch also applies the new formatting rules to those packages. Differential Revision: https://phab.mercurial-scm.org/D9142

use pyembed::MainPythonInterpreter;

// Include an auto-generated file containing the default
// `pyembed::PythonConfig` derived by the PyOxidizer configuration file.
//
// If you do not want to use PyOxidizer to generate this file, simply
// remove this line and instantiate your own instance of
// `pyembed::PythonConfig`.
include!(env!("PYOXIDIZER_DEFAULT_PYTHON_CONFIG_RS"));

fn main() {
    // The following code is in a block so the MainPythonInterpreter is
    // destroyed in an orderly manner, before process exit.
    let code = {
        // Load the default Python configuration as derived by the PyOxidizer
        // config file used at build time.
        let config = default_python_config();

        // Construct a new Python interpreter using that config, handling any
        // errors from construction.
        match MainPythonInterpreter::new(config) {
            Ok(mut interp) => {
                // And run it using the default run configuration as specified
                // by the configuration. If an uncaught Python
                // exception is raised, handle it.
                // This includes the special SystemExit, which is a request to
                // terminate the process.
                interp.run_as_main()
            }
            Err(msg) => {
                eprintln!("{}", msg);
                1
            }
        }
    };

    // And exit the process according to code execution results.
    std::process::exit(code);
}