Rustup to rust-lang/rust#64874

Episode 1 - The simple cases

clippy_lints/src/escape.rs

@@ -85,7 +85,6 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for BoxedLocal {
             cx.param_env,
             region_scope_tree,
             cx.tables,
-            None,
         )
         .consume_body(body);
 
@@ -114,15 +113,14 @@ fn is_argument(map: &hir::map::Map<'_>, id: HirId) -> bool {
 }
 
 impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> {
-    fn consume(&mut self, _: HirId, _: Span, cmt: &cmt_<'tcx>, mode: ConsumeMode) {
+    fn consume(&mut self, cmt: &cmt_<'tcx>, mode: ConsumeMode) {
         if let Categorization::Local(lid) = cmt.cat {
-            if let Move(DirectRefMove) | Move(CaptureMove) = mode {
+            if let ConsumeMode::Move = mode {
                 // moved out or in. clearly can't be localized
                 self.set.remove(&lid);
             }
         }
     }
-    fn matched_pat(&mut self, _: &Pat, _: &cmt_<'tcx>, _: MatchMode) {}
     fn consume_pat(&mut self, consume_pat: &Pat, cmt: &cmt_<'tcx>, _: ConsumeMode) {
         let map = &self.cx.tcx.hir();
         if is_argument(map, consume_pat.hir_id) {
@@ -137,7 +135,7 @@ impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> {
             }
             return;
         }
-        if let Categorization::Rvalue(..) = cmt.cat {
+        if let Categorization::Rvalue = cmt.cat {
             if let Some(Node::Stmt(st)) = map.find(map.get_parent_node(cmt.hir_id)) {
                 if let StmtKind::Local(ref loc) = st.kind {
                     if let Some(ref ex) = loc.init {
@@ -163,12 +161,10 @@ impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> {
             }
         }
     }
+
     fn borrow(
         &mut self,
-        _: HirId,
-        _: Span,
         cmt: &cmt_<'tcx>,
-        _: ty::Region<'_>,
         _: ty::BorrowKind,
         loan_cause: LoanCause,
     ) {
@@ -192,8 +188,8 @@ impl<'a, 'tcx> Delegate<'tcx> for EscapeDelegate<'a, 'tcx> {
             }
         }
     }
-    fn decl_without_init(&mut self, _: HirId, _: Span) {}
-    fn mutate(&mut self, _: HirId, _: Span, _: &cmt_<'tcx>, _: MutateMode) {}
+
+    fn mutate(&mut self, _: &cmt_<'tcx>) {}
 }
 
 impl<'a, 'tcx> EscapeDelegate<'a, 'tcx> {

clippy_lints/src/loops.rs

@@ -1547,37 +1547,31 @@ struct MutatePairDelegate {
 }
 
 impl<'tcx> Delegate<'tcx> for MutatePairDelegate {
-    fn consume(&mut self, _: HirId, _: Span, _: &cmt_<'tcx>, _: ConsumeMode) {}
+    fn consume(&mut self, _: &cmt_<'tcx>, _: ConsumeMode) {}
 
-    fn matched_pat(&mut self, _: &Pat, _: &cmt_<'tcx>, _: MatchMode) {}
-
-    fn consume_pat(&mut self, _: &Pat, _: &cmt_<'tcx>, _: ConsumeMode) {}
-
-    fn borrow(&mut self, _: HirId, sp: Span, cmt: &cmt_<'tcx>, _: ty::Region<'_>, bk: ty::BorrowKind, _: LoanCause) {
+    fn borrow(&mut self, cmt: &cmt_<'tcx>, bk: ty::BorrowKind) {
         if let ty::BorrowKind::MutBorrow = bk {
             if let Categorization::Local(id) = cmt.cat {
                 if Some(id) == self.hir_id_low {
-                    self.span_low = Some(sp)
+                    self.span_low = Some(cmt.span)
                 }
                 if Some(id) == self.hir_id_high {
-                    self.span_high = Some(sp)
+                    self.span_high = Some(cmt.span)
                 }
             }
         }
     }
 
-    fn mutate(&mut self, _: HirId, sp: Span, cmt: &cmt_<'tcx>, _: MutateMode) {
+    fn mutate(&mut self, cmt: &cmt_<'tcx>) {
         if let Categorization::Local(id) = cmt.cat {
             if Some(id) == self.hir_id_low {
-                self.span_low = Some(sp)
+                self.span_low = Some(cmt.span)
             }
             if Some(id) == self.hir_id_high {
-                self.span_high = Some(sp)
+                self.span_high = Some(cmt.span)
             }
         }
     }
-
-    fn decl_without_init(&mut self, _: HirId, _: Span) {}
 }
 
 impl<'tcx> MutatePairDelegate {
@@ -1655,7 +1649,6 @@ fn check_for_mutation(
         cx.param_env,
         region_scope_tree,
         cx.tables,
-        None,
     )
     .walk_expr(body);
     delegate.mutation_span()

clippy_lints/src/needless_pass_by_value.rs

@@ -143,7 +143,6 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NeedlessPassByValue {
                 cx.param_env,
                 region_scope_tree,
                 cx.tables,
-                None,
             )
             .consume_body(body);
             ctx
@@ -400,9 +399,9 @@ impl<'a, 'tcx> MovedVariablesCtxt<'a, 'tcx> {
 }
 
 impl<'a, 'tcx> euv::Delegate<'tcx> for MovedVariablesCtxt<'a, 'tcx> {
-    fn consume(&mut self, consume_id: HirId, consume_span: Span, cmt: &mc::cmt_<'tcx>, mode: euv::ConsumeMode) {
-        if let euv::ConsumeMode::Move(_) = mode {
-            self.move_common(consume_id, consume_span, cmt);
+    fn consume(&mut self, cmt: &mc::cmt_<'tcx>, mode: euv::ConsumeMode) {
+        if let euv::ConsumeMode::Move = mode {
+            self.move_common(cmt.hir_id, cmt.span, cmt);
         }
     }
 
@@ -422,18 +421,12 @@ impl<'a, 'tcx> euv::Delegate<'tcx> for MovedVariablesCtxt<'a, 'tcx> {
 
     fn borrow(
         &mut self,
-        _: HirId,
-        _: Span,
         _: &mc::cmt_<'tcx>,
-        _: ty::Region<'_>,
         _: ty::BorrowKind,
-        _: euv::LoanCause,
     ) {
     }
 
-    fn mutate(&mut self, _: HirId, _: Span, _: &mc::cmt_<'tcx>, _: euv::MutateMode) {}
-
-    fn decl_without_init(&mut self, _: HirId, _: Span) {}
+    fn mutate(&mut self, _: &mc::cmt_<'tcx>) {}
 }
 
 fn unwrap_downcast_or_interior<'a, 'tcx>(mut cmt: &'a mc::cmt_<'tcx>) -> mc::cmt_<'tcx> {

clippy_lints/src/utils/usage.rs

@@ -6,7 +6,6 @@ use rustc::middle::mem_categorization::cmt_;
 use rustc::middle::mem_categorization::Categorization;
 use rustc::ty;
 use rustc_data_structures::fx::FxHashSet;
-use syntax::source_map::Span;
 
 /// Returns a set of mutated local variable IDs, or `None` if mutations could not be determined.
 pub fn mutated_variables<'a, 'tcx>(expr: &'tcx Expr, cx: &'a LateContext<'a, 'tcx>) -> Option<FxHashSet<HirId>> {
@@ -23,7 +22,6 @@ pub fn mutated_variables<'a, 'tcx>(expr: &'tcx Expr, cx: &'a LateContext<'a, 'tc
         cx.param_env,
         region_scope_tree,
         cx.tables,
-        None,
     )
     .walk_expr(expr);
 
@@ -66,21 +64,15 @@ impl<'tcx> MutVarsDelegate {
 }
 
 impl<'tcx> Delegate<'tcx> for MutVarsDelegate {
-    fn consume(&mut self, _: HirId, _: Span, _: &cmt_<'tcx>, _: ConsumeMode) {}
+    fn consume(&mut self, _: &cmt_<'tcx>, _: ConsumeMode) {}
 
-    fn matched_pat(&mut self, _: &Pat, _: &cmt_<'tcx>, _: MatchMode) {}
-
-    fn consume_pat(&mut self, _: &Pat, _: &cmt_<'tcx>, _: ConsumeMode) {}
-
-    fn borrow(&mut self, _: HirId, _: Span, cmt: &cmt_<'tcx>, _: ty::Region<'_>, bk: ty::BorrowKind, _: LoanCause) {
+    fn borrow(&mut self, cmt: &cmt_<'tcx>, bk: ty::BorrowKind) {
         if let ty::BorrowKind::MutBorrow = bk {
             self.update(&cmt.cat)
         }
     }
 
-    fn mutate(&mut self, _: HirId, _: Span, cmt: &cmt_<'tcx>, _: MutateMode) {
+    fn mutate(&mut self, cmt: &cmt_<'tcx>) {
         self.update(&cmt.cat)
     }
-
-    fn decl_without_init(&mut self, _: HirId, _: Span) {}
 }