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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.
use rustc::ty;
use std::fs;
use std::path::PathBuf;
pub fn dep_graph_path<'tcx>(tcx: &ty::TyCtxt<'tcx>) -> Option<PathBuf> {
// For now, just save/load dep-graph from
// directory/dep_graph.rbml
tcx.sess.opts.incremental.as_ref().and_then(|incr_dir| {
match fs::create_dir_all(&incr_dir){
Ok(()) => {}
Err(err) => {
tcx.sess.err(
&format!("could not create the directory `{}`: {}",
incr_dir.display(), err));
return None;
}
}
Some(incr_dir.join("dep_graph.rbml"))
})
}
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