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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(rustc_private)]
extern crate rustc;
extern crate rustc_driver;
extern crate rustc_lint;
extern crate rustc_metadata;
extern crate rustc_errors;
extern crate rustc_trans_utils;
extern crate syntax;
use rustc::session::{build_session, Session};
use rustc::session::config::{basic_options, Input,
OutputType, OutputTypes};
use rustc_driver::driver::{compile_input, CompileController};
use rustc_metadata::cstore::CStore;
use rustc_errors::registry::Registry;
use syntax::codemap::FileName;
use rustc_trans_utils::trans_crate::TransCrate;
use std::path::PathBuf;
use std::rc::Rc;
fn main() {
let src = r#"
fn main() {}
"#;
let args: Vec<String> = std::env::args().collect();
if args.len() < 4 {
panic!("expected rustc path");
}
let tmpdir = PathBuf::from(&args[1]);
let mut sysroot = PathBuf::from(&args[3]);
sysroot.pop();
sysroot.pop();
compile(src.to_string(), tmpdir.join("out"), sysroot.clone());
compile(src.to_string(), tmpdir.join("out"), sysroot.clone());
}
fn basic_sess(sysroot: PathBuf) -> (Session, Rc<CStore>, Box<TransCrate>) {
let mut opts = basic_options();
opts.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
opts.maybe_sysroot = Some(sysroot);
if let Ok(linker) = std::env::var("RUSTC_LINKER") {
opts.cg.linker = Some(linker.into());
}
let descriptions = Registry::new(&rustc::DIAGNOSTICS);
let sess = build_session(opts, None, descriptions);
let trans = rustc_driver::get_trans(&sess);
let cstore = Rc::new(CStore::new(trans.metadata_loader()));
rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
(sess, cstore, trans)
}
fn compile(code: String, output: PathBuf, sysroot: PathBuf) {
let (sess, cstore, trans) = basic_sess(sysroot);
let control = CompileController::basic();
let input = Input::Str { name: FileName::Anon, input: code };
let _ = compile_input(
trans,
&sess,
&cstore,
&None,
&input,
&None,
&Some(output),
None,
&control
);
}
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