1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 use std::collections::BTreeMap;
12 use std::path::{Path, PathBuf};
17 use syntax::parse::parser;
19 use utils::contains_skip;
22 /// List all the files containing modules of a crate.
23 /// If a file is used twice in a crate, it appears only once.
24 pub fn list_files<'a>(
25 krate: &'a ast::Crate,
26 codemap: &codemap::CodeMap,
27 ) -> Result<BTreeMap<PathBuf, &'a ast::Mod>, io::Error> {
28 let mut result = BTreeMap::new(); // Enforce file order determinism
29 let root_filename: PathBuf = codemap.span_to_filename(krate.span).into();
32 root_filename.parent().unwrap(),
36 result.insert(root_filename, &krate.module);
40 /// Recursively list all external modules included in a module.
41 fn list_submodules<'a>(
44 codemap: &codemap::CodeMap,
45 result: &mut BTreeMap<PathBuf, &'a ast::Mod>,
46 ) -> Result<(), io::Error> {
47 debug!("list_submodules: search_dir: {:?}", search_dir);
48 for item in &module.items {
49 if let ast::ItemKind::Mod(ref sub_mod) = item.node {
50 if !contains_skip(&item.attrs) {
52 codemap.span_to_filename(item.span) == codemap.span_to_filename(sub_mod.inner);
53 let dir_path = if is_internal {
54 search_dir.join(&item.ident.to_string())
56 let mod_path = module_file(item.ident, &item.attrs, search_dir, codemap)?;
57 let dir_path = mod_path.parent().unwrap().to_owned();
58 result.insert(mod_path, sub_mod);
61 list_submodules(sub_mod, &dir_path, codemap, result)?;
68 /// Find the file corresponding to an external mod
71 attrs: &[ast::Attribute],
73 codemap: &codemap::CodeMap,
74 ) -> Result<PathBuf, io::Error> {
75 if let Some(path) = parser::Parser::submod_path_from_attr(attrs, dir_path) {
79 match parser::Parser::default_submod_path(id, dir_path, codemap).result {
80 Ok(parser::ModulePathSuccess { path, .. }) => Ok(path),
81 Err(_) => Err(io::Error::new(
83 format!("Couldn't find module {}", id),