vhdl_parser 0.13.0

VHDL Parser
Documentation 
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
//
// Copyright (c) 2018, Olof Kraigher olof.kraigher@gmail.com

// Allowing this, since there is an open issue with this lint
// Track here: https://github.com/rust-lang/rust-clippy/issues/1981
// Track here: https://github.com/rust-lang/rust-clippy/issues/1981
#![allow(clippy::ptr_arg)]

#[macro_use]
extern crate clap;

use std::path::Path;
use vhdl_parser::{Config, Diagnostic, MessagePrinter, Project};

fn main() {
    use clap::{App, Arg};

    let matches = App::new(env!("CARGO_PKG_NAME"))
        .version(env!("CARGO_PKG_VERSION"))
        .author(env!("CARGO_PKG_AUTHORS"))
        .about(env!("CARGO_PKG_DESCRIPTION"))
        .arg(
            Arg::with_name("num-threads")
                .short("-p")
                .long("--num-threads")
                .default_value("4")
                .help("The number of threads to use"),
        )
        .arg(
            Arg::with_name("config")
                .help("Config file in TOML format containing libraries and settings")
                .short("-c")
                .long("--config")
                .required(true)
                .takes_value(true),
        )
        .get_matches();

    let num_threads = value_t_or_exit!(matches.value_of("num-threads"), usize);
    rayon::ThreadPoolBuilder::new()
        .num_threads(num_threads)
        .build_global()
        .unwrap();

    let file_name = value_t_or_exit!(matches.value_of("config"), String);
    let mut config = Config::default();
    let mut msg_printer = MessagePrinter::new();
    config.load_external_config(&mut msg_printer);
    config.append(
        &Config::read_file_path(Path::new(&file_name)).expect("Failed to read config file"),
        &mut msg_printer,
    );
    let mut project = Project::from_config(&config, &mut msg_printer);
    show_diagnostics(&project.analyse());

    // Exit without running Drop on entire allocated AST
    std::process::exit(0);
}

fn show_diagnostics(diagnostics: &[Diagnostic]) {
    for diagnostic in diagnostics {
        println!("{}", diagnostic.show());
    }
}