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Improve directory computation during invocation collection.

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This commit is contained in:
Jeffrey Seyfried 2016-09-05 04:08:38 +00:00
parent 2d759046ba
commit 9ac91fa48b
1 changed files with 9 additions and 5 deletions
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14
src/libsyntax/ext/expand.rs
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@ -615,16 +615,20 @@ impl<'a, 'b> Folder for InvocationCollector<'a, 'b> {
ast::ItemKind::Mod(ast::Mod { inner, .. }) => {
let mut paths = (*self.cx.syntax_env.paths()).clone();
paths.mod_path.push(item.ident);
if item.span.contains(inner) {
// Detect if this is an inline module (`mod m { ... }` as opposed to `mod m;`).
// In the non-inline case, `inner` is never the dummy span (c.f. `parse_item_mod`).
// Thus, if `inner` is the dummy span, we know the module is inline.
let inline_module = item.span.contains(inner) || inner == syntax_pos::DUMMY_SP;
if inline_module {
paths.directory.push(&*{
::attr::first_attr_value_str_by_name(&item.attrs, "path")
.unwrap_or(item.ident.name.as_str())
});
} else {
paths.directory = match inner {
syntax_pos::DUMMY_SP => PathBuf::new(),
_ => PathBuf::from(self.cx.parse_sess.codemap().span_to_filename(inner)),
};
paths.directory =
PathBuf::from(self.cx.parse_sess.codemap().span_to_filename(inner));
paths.directory.pop();
}