Take &Pat in visit_pat

src/librustc/middle/borrowck/check_loans.rs

@@ -51,7 +51,7 @@ impl<'self> Visitor<()> for CheckLoanCtxt<'self> {
     fn visit_block(&mut self, b:&ast::Block, _:()) {
         check_loans_in_block(self, b);
     }
-    fn visit_pat(&mut self, p:@ast::Pat, _:()) {
+    fn visit_pat(&mut self, p:&ast::Pat, _:()) {
         check_loans_in_pat(self, p);
     }
     fn visit_fn(&mut self, fk:&visit::fn_kind, fd:&ast::fn_decl,
@@ -847,7 +847,7 @@ fn check_loans_in_expr<'a>(this: &mut CheckLoanCtxt<'a>,
 }
 
 fn check_loans_in_pat<'a>(this: &mut CheckLoanCtxt<'a>,
-                          pat: @ast::Pat)
+                          pat: &ast::Pat)
 {
     this.check_for_conflicting_loans(pat.id);
     this.check_move_out_from_id(pat.id, pat.span);

src/librustc/middle/borrowck/gather_loans/mod.rs

@@ -87,7 +87,7 @@ impl<'self> visit::Visitor<()> for GatherLoanCtxt<'self> {
     fn visit_stmt(&mut self, s:@Stmt, _:()) {
         add_stmt_to_map(self, s);
     }
-    fn visit_pat(&mut self, p:@Pat, _:()) {
+    fn visit_pat(&mut self, p:&Pat, _:()) {
         add_pat_to_id_range(self, p);
     }
     fn visit_local(&mut self, l:@Local, _:()) {
@@ -119,7 +119,7 @@ pub fn gather_loans(bccx: &BorrowckCtxt,
 }
 
 fn add_pat_to_id_range(this: &mut GatherLoanCtxt,
-                       p: @ast::Pat) {
+                       p: &ast::Pat) {
     // NB: This visitor function just adds the pat ids into the id
     // range. We gather loans that occur in patterns using the
     // `gather_pat()` method below. Eventually these two should be

src/librustc/middle/check_const.rs

@@ -33,7 +33,7 @@ impl Visitor<bool> for CheckCrateVisitor {
     fn visit_item(&mut self, i:@item, env:bool) {
         check_item(self, self.sess, self.ast_map, self.def_map, i, env);
     }
-    fn visit_pat(&mut self, p:@Pat, env:bool) {
+    fn visit_pat(&mut self, p:&Pat, env:bool) {
         check_pat(self, p, env);
     }
     fn visit_expr(&mut self, ex:@Expr, env:bool) {
@@ -81,7 +81,7 @@ pub fn check_item(v: &mut CheckCrateVisitor,
     }
 }
 
-pub fn check_pat(v: &mut CheckCrateVisitor, p: @Pat, _is_const: bool) {
+pub fn check_pat(v: &mut CheckCrateVisitor, p: &Pat, _is_const: bool) {
     fn is_str(e: @Expr) -> bool {
         match e.node {
             ExprVstore(

src/librustc/middle/lint.rs

@@ -900,7 +900,7 @@ fn check_unsafe_block(cx: &Context, e: &ast::Expr) {
     }
 }
 
-fn check_unused_mut_pat(cx: &Context, p: @ast::Pat) {
+fn check_unused_mut_pat(cx: &Context, p: &ast::Pat) {
     match p.node {
         ast::PatIdent(ast::BindByValue(ast::MutMutable),
                       ref path, _) if pat_util::pat_is_binding(cx.tcx.def_map, p)=> {
@@ -1119,7 +1119,7 @@ impl<'self> Visitor<()> for Context<'self> {
         }
     }
 
-    fn visit_pat(&mut self, p: @ast::Pat, _: ()) {
+    fn visit_pat(&mut self, p: &ast::Pat, _: ()) {
         check_pat_non_uppercase_statics(self, p);
         check_unused_mut_pat(self, p);
 

src/librustc/middle/privacy.rs

@@ -739,7 +739,7 @@ impl<'self> Visitor<()> for PrivacyVisitor<'self> {
         }
     }
 
-    fn visit_pat(&mut self, pattern: @ast::Pat, _: ()) {
+    fn visit_pat(&mut self, pattern: &ast::Pat, _: ()) {
         match pattern.node {
             ast::PatStruct(_, ref fields, _) => {
                 match ty::get(ty::pat_ty(self.tcx, pattern)).sty {

src/librustc/middle/region.rs

@@ -340,7 +340,7 @@ fn resolve_arm(visitor: &mut RegionResolutionVisitor,
 }
 
 fn resolve_pat(visitor: &mut RegionResolutionVisitor,
-               pat: @ast::Pat,
+               pat: &ast::Pat,
                cx: Context) {
     assert_eq!(cx.var_parent, cx.parent);
     parent_to_expr(visitor, cx, pat.id, pat.span);
@@ -480,7 +480,7 @@ impl Visitor<Context> for RegionResolutionVisitor {
     fn visit_arm(&mut self, a:&Arm, cx:Context) {
         resolve_arm(self, a, cx);
     }
-    fn visit_pat(&mut self, p:@Pat, cx:Context) {
+    fn visit_pat(&mut self, p:&Pat, cx:Context) {
         resolve_pat(self, p, cx);
     }
     fn visit_stmt(&mut self, s:@Stmt, cx:Context) {

src/librustc/middle/typeck/check/mod.rs

@@ -375,7 +375,7 @@ impl Visitor<()> for GatherLocalsVisitor {
 
     }
         // Add pattern bindings.
-    fn visit_pat(&mut self, p:@ast::Pat, _:()) {
+    fn visit_pat(&mut self, p:&ast::Pat, _:()) {
             match p.node {
               ast::PatIdent(_, ref path, _)
                   if pat_util::pat_is_binding(self.fcx.ccx.tcx.def_map, p) => {

src/librustc/middle/typeck/check/writeback.rs

@@ -278,7 +278,7 @@ fn visit_block(b: &ast::Block, wbcx: &mut WbCtxt) {
     visit::walk_block(wbcx, b, ());
 }
 
-fn visit_pat(p: @ast::Pat, wbcx: &mut WbCtxt) {
+fn visit_pat(p: &ast::Pat, wbcx: &mut WbCtxt) {
     if !wbcx.success {
         return;
     }
@@ -323,7 +323,7 @@ impl Visitor<()> for WbCtxt {
     fn visit_stmt(&mut self, s:@ast::Stmt, _:()) { visit_stmt(s, self); }
     fn visit_expr(&mut self, ex:@ast::Expr, _:()) { visit_expr(ex, self); }
     fn visit_block(&mut self, b:&ast::Block, _:()) { visit_block(b, self); }
-    fn visit_pat(&mut self, p:@ast::Pat, _:()) { visit_pat(p, self); }
+    fn visit_pat(&mut self, p:&ast::Pat, _:()) { visit_pat(p, self); }
     fn visit_local(&mut self, l:@ast::Local, _:()) { visit_local(l, self); }
 }
 

src/libsyntax/ast_map.rs

@@ -242,7 +242,7 @@ impl Ctx {
         visit::walk_block(self, b, ());
     }
 
-    fn map_pat(&mut self, pat: @Pat) {
+    fn map_pat(&mut self, pat: &Pat) {
         match pat.node {
             PatIdent(_, ref path, _) => {
                 // Note: this is at least *potentially* a pattern...
@@ -345,7 +345,7 @@ impl Visitor<()> for Ctx {
         self.path.pop();
     }
 
-    fn visit_pat(&mut self, pat: @Pat, _: ()) {
+    fn visit_pat(&mut self, pat: &Pat, _: ()) {
         self.map_pat(pat);
         visit::walk_pat(self, pat, ())
     }

src/libsyntax/ast_util.rs

@@ -497,7 +497,7 @@ impl<'self, O: IdVisitingOperation> Visitor<()> for IdVisitor<'self, O> {
         visit::walk_stmt(self, statement, env)
     }
 
-    fn visit_pat(&mut self, pattern: @Pat, env: ()) {
+    fn visit_pat(&mut self, pattern: &Pat, env: ()) {
         self.operation.visit_id(pattern.id);
         visit::walk_pat(self, pattern, env)
     }

src/libsyntax/ext/expand.rs

@@ -612,7 +612,7 @@ struct NewNameFinderContext {
 }
 
 impl Visitor<()> for NewNameFinderContext {
-    fn visit_pat(&mut self, pattern: @ast::Pat, _: ()) {
+    fn visit_pat(&mut self, pattern: &ast::Pat, _: ()) {
         match *pattern {
             // we found a pat_ident!
             ast::Pat {

src/libsyntax/visit.rs

@@ -78,7 +78,7 @@ pub trait Visitor<E:Clone> {
     fn visit_block(&mut self, b:&Block, e:E) { walk_block(self, b, e) }
     fn visit_stmt(&mut self, s:@Stmt, e:E) { walk_stmt(self, s, e) }
     fn visit_arm(&mut self, a:&Arm, e:E) { walk_arm(self, a, e) }
-    fn visit_pat(&mut self, p:@Pat, e:E) { walk_pat(self, p, e) }
+    fn visit_pat(&mut self, p:&Pat, e:E) { walk_pat(self, p, e) }
     fn visit_decl(&mut self, d:@Decl, e:E) { walk_decl(self, d, e) }
     fn visit_expr(&mut self, ex:@Expr, e:E) { walk_expr(self, ex, e) }
     fn visit_expr_post(&mut self, _ex:@Expr, _e:E) { }