libsyntax: De-@mut Parser::mod_path_stack

Author: pcwalton

src/libsyntax/parse/parser.rs

@@ -317,7 +317,7 @@ pub fn Parser(sess: @mut ParseSess, cfg: ast::CrateConfig, rdr: @mut reader)
         restriction: UNRESTRICTED,
         quote_depth: 0,
         obsolete_set: HashSet::new(),
-        mod_path_stack: @mut ~[],
+        mod_path_stack: ~[],
         open_braces: @mut ~[],
         non_copyable: util::NonCopyable
     }
@@ -347,7 +347,7 @@ pub struct Parser {
     /// extra detail when the same error is seen twice
     obsolete_set: HashSet<ObsoleteSyntax>,
     /// Used to determine the path to externally loaded source files
-    mod_path_stack: @mut ~[@str],
+    mod_path_stack: ~[@str],
     /// Stack of spans of open delimiters. Used for error message.
     open_braces: @mut ~[Span],
     /* do not copy the parser; its state is tied to outside state */
@@ -4223,8 +4223,7 @@ impl Parser {
                     -> (ast::item_, ~[ast::Attribute]) {
         let mut prefix = Path::new(self.sess.cm.span_to_filename(self.span));
         prefix.pop();
-        let mod_path_stack = &*self.mod_path_stack;
-        let mod_path = Path::new(".").join_many(*mod_path_stack);
+        let mod_path = Path::new(".").join_many(self.mod_path_stack);
         let dir_path = prefix.join(&mod_path);
         let file_path = match ::attr::first_attr_value_str_by_name(
                 outer_attrs, "path") {