2015-07-26 05:55:25 -05:00
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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2017-03-21 15:00:33 -05:00
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use std::collections::BTreeMap;
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2017-07-13 04:42:14 -05:00
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use std::path::{Path, PathBuf};
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2015-07-26 05:55:25 -05:00
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use syntax::ast;
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use syntax::codemap;
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2015-07-26 07:05:43 -05:00
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use syntax::parse::parser;
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2015-07-26 05:55:25 -05:00
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2017-07-13 04:42:14 -05:00
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use utils::contains_skip;
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2015-07-26 05:55:25 -05:00
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/// List all the files containing modules of a crate.
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/// If a file is used twice in a crate, it appears only once.
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2017-06-11 22:58:58 -05:00
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pub fn list_files<'a>(
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krate: &'a ast::Crate,
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codemap: &codemap::CodeMap,
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) -> BTreeMap<PathBuf, &'a ast::Mod> {
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2017-03-21 15:00:33 -05:00
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let mut result = BTreeMap::new(); // Enforce file order determinism
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2015-07-26 05:55:25 -05:00
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let root_filename: PathBuf = codemap.span_to_filename(krate.span).into();
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2017-06-11 22:58:58 -05:00
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list_submodules(
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&krate.module,
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root_filename.parent().unwrap(),
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codemap,
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&mut result,
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);
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2015-07-26 05:55:25 -05:00
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result.insert(root_filename, &krate.module);
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result
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}
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/// Recursively list all external modules included in a module.
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2017-06-11 22:58:58 -05:00
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fn list_submodules<'a>(
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module: &'a ast::Mod,
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search_dir: &Path,
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codemap: &codemap::CodeMap,
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result: &mut BTreeMap<PathBuf, &'a ast::Mod>,
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) {
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debug!("list_submodules: search_dir: {:?}", search_dir);
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2015-09-04 16:39:33 -05:00
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for item in &module.items {
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2016-03-01 16:27:19 -06:00
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if let ast::ItemKind::Mod(ref sub_mod) = item.node {
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2017-07-13 04:42:14 -05:00
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if !contains_skip(&item.attrs) {
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2017-07-05 04:31:37 -05:00
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let is_internal =
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codemap.span_to_filename(item.span) == codemap.span_to_filename(sub_mod.inner);
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2015-07-26 05:55:25 -05:00
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let dir_path = if is_internal {
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search_dir.join(&item.ident.to_string())
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} else {
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let mod_path = module_file(item.ident, &item.attrs, search_dir, codemap);
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let dir_path = mod_path.parent().unwrap().to_owned();
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result.insert(mod_path, sub_mod);
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dir_path
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};
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list_submodules(sub_mod, &dir_path, codemap, result);
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}
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}
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}
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}
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/// Find the file corresponding to an external mod
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2017-06-11 22:58:58 -05:00
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fn module_file(
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id: ast::Ident,
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attrs: &[ast::Attribute],
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dir_path: &Path,
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codemap: &codemap::CodeMap,
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) -> PathBuf {
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2016-08-23 09:14:45 -05:00
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if let Some(path) = parser::Parser::submod_path_from_attr(attrs, dir_path) {
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2015-07-26 05:55:25 -05:00
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return path;
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}
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2017-05-25 02:08:08 -05:00
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match parser::Parser::default_submod_path(id, dir_path, codemap).result {
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2015-07-26 05:55:25 -05:00
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Ok(parser::ModulePathSuccess { path, .. }) => path,
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2015-08-15 22:58:17 -05:00
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Err(_) => panic!("Couldn't find module {}", id),
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2015-07-26 05:55:25 -05:00
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}
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}
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