Rollup merge of rust-lang#63854 - c410-f3r:attrs-visit, r=petrochenkov

Modifies how Arg, Arm, Field, FieldPattern and Variant are visited Part of the necessary work to accomplish rust-lang#63468.
Centril · Aug 25, 2019 · b0d374a · b0d374a
2 parents 7059f05 + 6a3d517
commit b0d374a
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Showing 11 changed files with 147 additions and 145 deletions.
diff --git a/src/librustc/hir/map/def_collector.rs b/src/librustc/hir/map/def_collector.rs
@@ -154,20 +154,19 @@ impl<'a> visit::Visitor<'a> for DefCollector<'a> {
         });
     }
 
-    fn visit_variant(&mut self, v: &'a Variant, g: &'a Generics, item_id: NodeId) {
+    fn visit_variant(&mut self, v: &'a Variant) {
         let def = self.create_def(v.id,
                                   DefPathData::TypeNs(v.ident.as_interned_str()),
                                   v.span);
         self.with_parent(def, |this| {
             if let Some(ctor_hir_id) = v.data.ctor_id() {
                 this.create_def(ctor_hir_id, DefPathData::Ctor, v.span);
             }
-            visit::walk_variant(this, v, g, item_id)
+            visit::walk_variant(this, v)
         });
     }
 
-    fn visit_variant_data(&mut self, data: &'a VariantData, _: Ident,
-                          _: &'a Generics, _: NodeId, _: Span) {
+    fn visit_variant_data(&mut self, data: &'a VariantData) {
         for (index, field) in data.fields().iter().enumerate() {
             let name = field.ident.map(|ident| ident.name)
                 .unwrap_or_else(|| sym::integer(index));

diff --git a/src/librustc/lint/context.rs b/src/librustc/lint/context.rs
@@ -1040,13 +1040,13 @@ for LateContextAndPass<'a, 'tcx, T> {
 
     fn visit_variant_data(&mut self,
                         s: &'tcx hir::VariantData,
-                        name: ast::Name,
-                        g: &'tcx hir::Generics,
-                        item_id: hir::HirId,
+                        _: ast::Name,
+                        _: &'tcx hir::Generics,
+                        _: hir::HirId,
                         _: Span) {
-        lint_callback!(self, check_struct_def, s, name, g, item_id);
+        lint_callback!(self, check_struct_def, s);
         hir_visit::walk_struct_def(self, s);
-        lint_callback!(self, check_struct_def_post, s, name, g, item_id);
+        lint_callback!(self, check_struct_def_post, s);
     }
 
     fn visit_struct_field(&mut self, s: &'tcx hir::StructField) {
@@ -1061,9 +1061,9 @@ for LateContextAndPass<'a, 'tcx, T> {
                      g: &'tcx hir::Generics,
                      item_id: hir::HirId) {
         self.with_lint_attrs(v.id, &v.attrs, |cx| {
-            lint_callback!(cx, check_variant, v, g);
+            lint_callback!(cx, check_variant, v);
             hir_visit::walk_variant(cx, v, g, item_id);
-            lint_callback!(cx, check_variant_post, v, g);
+            lint_callback!(cx, check_variant_post, v);
         })
     }
 
@@ -1214,18 +1214,13 @@ impl<'a, T: EarlyLintPass> ast_visit::Visitor<'a> for EarlyContextAndPass<'a, T>
         run_early_pass!(self, check_fn_post, fk, decl, span, id);
     }
 
-    fn visit_variant_data(&mut self,
-                        s: &'a ast::VariantData,
-                        ident: ast::Ident,
-                        g: &'a ast::Generics,
-                        item_id: ast::NodeId,
-                        _: Span) {
-        run_early_pass!(self, check_struct_def, s, ident, g, item_id);
+    fn visit_variant_data(&mut self, s: &'a ast::VariantData) {
+        run_early_pass!(self, check_struct_def, s);
         if let Some(ctor_hir_id) = s.ctor_id() {
             self.check_id(ctor_hir_id);
         }
         ast_visit::walk_struct_def(self, s);
-        run_early_pass!(self, check_struct_def_post, s, ident, g, item_id);
+        run_early_pass!(self, check_struct_def_post, s);
     }
 
     fn visit_struct_field(&mut self, s: &'a ast::StructField) {
@@ -1235,11 +1230,11 @@ impl<'a, T: EarlyLintPass> ast_visit::Visitor<'a> for EarlyContextAndPass<'a, T>
         })
     }
 
-    fn visit_variant(&mut self, v: &'a ast::Variant, g: &'a ast::Generics, item_id: ast::NodeId) {
-        self.with_lint_attrs(item_id, &v.attrs, |cx| {
-            run_early_pass!(cx, check_variant, v, g);
-            ast_visit::walk_variant(cx, v, g, item_id);
-            run_early_pass!(cx, check_variant_post, v, g);
+    fn visit_variant(&mut self, v: &'a ast::Variant) {
+        self.with_lint_attrs(v.id, &v.attrs, |cx| {
+            run_early_pass!(cx, check_variant, v);
+            ast_visit::walk_variant(cx, v);
+            run_early_pass!(cx, check_variant_post, v);
         })
     }
 

diff --git a/src/librustc/lint/mod.rs b/src/librustc/lint/mod.rs
@@ -248,21 +248,11 @@ macro_rules! late_lint_methods {
             fn check_trait_item_post(a: &$hir hir::TraitItem);
             fn check_impl_item(a: &$hir hir::ImplItem);
             fn check_impl_item_post(a: &$hir hir::ImplItem);
-            fn check_struct_def(
-                a: &$hir hir::VariantData,
-                b: ast::Name,
-                c: &$hir hir::Generics,
-                d: hir::HirId
-            );
-            fn check_struct_def_post(
-                a: &$hir hir::VariantData,
-                b: ast::Name,
-                c: &$hir hir::Generics,
-                d: hir::HirId
-            );
+            fn check_struct_def(a: &$hir hir::VariantData);
+            fn check_struct_def_post(a: &$hir hir::VariantData);
             fn check_struct_field(a: &$hir hir::StructField);
-            fn check_variant(a: &$hir hir::Variant, b: &$hir hir::Generics);
-            fn check_variant_post(a: &$hir hir::Variant, b: &$hir hir::Generics);
+            fn check_variant(a: &$hir hir::Variant);
+            fn check_variant_post(a: &$hir hir::Variant);
             fn check_lifetime(a: &$hir hir::Lifetime);
             fn check_path(a: &$hir hir::Path, b: hir::HirId);
             fn check_attribute(a: &$hir ast::Attribute);
@@ -395,21 +385,11 @@ macro_rules! early_lint_methods {
             fn check_trait_item_post(a: &ast::TraitItem);
             fn check_impl_item(a: &ast::ImplItem);
             fn check_impl_item_post(a: &ast::ImplItem);
-            fn check_struct_def(
-                a: &ast::VariantData,
-                b: ast::Ident,
-                c: &ast::Generics,
-                d: ast::NodeId
-            );
-            fn check_struct_def_post(
-                a: &ast::VariantData,
-                b: ast::Ident,
-                c: &ast::Generics,
-                d: ast::NodeId
-            );
+            fn check_struct_def(a: &ast::VariantData);
+            fn check_struct_def_post(a: &ast::VariantData);
             fn check_struct_field(a: &ast::StructField);
-            fn check_variant(a: &ast::Variant, b: &ast::Generics);
-            fn check_variant_post(a: &ast::Variant, b: &ast::Generics);
+            fn check_variant(a: &ast::Variant);
+            fn check_variant_post(a: &ast::Variant);
             fn check_lifetime(a: &ast::Lifetime);
             fn check_path(a: &ast::Path, b: ast::NodeId);
             fn check_attribute(a: &ast::Attribute);

diff --git a/src/librustc_lint/builtin.rs b/src/librustc_lint/builtin.rs
@@ -482,7 +482,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for MissingDoc {
         }
     }
 
-    fn check_variant(&mut self, cx: &LateContext<'_, '_>, v: &hir::Variant, _: &hir::Generics) {
+    fn check_variant(&mut self, cx: &LateContext<'_, '_>, v: &hir::Variant) {
         self.check_missing_docs_attrs(cx,
                                       Some(v.id),
                                       &v.attrs,

diff --git a/src/librustc_lint/nonstandard_style.rs b/src/librustc_lint/nonstandard_style.rs
@@ -146,7 +146,7 @@ impl EarlyLintPass for NonCamelCaseTypes {
         }
     }
 
-    fn check_variant(&mut self, cx: &EarlyContext<'_>, v: &ast::Variant, _: &ast::Generics) {
+    fn check_variant(&mut self, cx: &EarlyContext<'_>, v: &ast::Variant) {
         self.check_case(cx, "variant", &v.ident);
     }
 
@@ -350,9 +350,6 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NonSnakeCase {
         &mut self,
         cx: &LateContext<'_, '_>,
         s: &hir::VariantData,
-        _: ast::Name,
-        _: &hir::Generics,
-        _: hir::HirId,
     ) {
         for sf in s.fields() {
             self.check_snake_case(cx, "structure field", &sf.ident);

diff --git a/src/librustc_passes/ast_validation.rs b/src/librustc_passes/ast_validation.rs
@@ -813,8 +813,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
         visit::walk_poly_trait_ref(self, t, m);
     }
 
-    fn visit_variant_data(&mut self, s: &'a VariantData, _: Ident,
-                          _: &'a Generics, _: NodeId, _: Span) {
+    fn visit_variant_data(&mut self, s: &'a VariantData) {
         self.with_banned_assoc_ty_bound(|this| visit::walk_struct_def(this, s))
     }
 

diff --git a/src/librustc_passes/hir_stats.rs b/src/librustc_passes/hir_stats.rs
@@ -334,12 +334,9 @@ impl<'v> ast_visit::Visitor<'v> for StatCollector<'v> {
         ast_visit::walk_struct_field(self, s)
     }
 
-    fn visit_variant(&mut self,
-                     v: &'v ast::Variant,
-                     g: &'v ast::Generics,
-                     item_id: NodeId) {
+    fn visit_variant(&mut self, v: &'v ast::Variant) {
         self.record("Variant", Id::None, v);
-        ast_visit::walk_variant(self, v, g, item_id)
+        ast_visit::walk_variant(self, v)
     }
 
     fn visit_lifetime(&mut self, lifetime: &'v ast::Lifetime) {

diff --git a/src/libsyntax/ext/expand.rs b/src/libsyntax/ext/expand.rs
@@ -1209,9 +1209,13 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
         }
     }
 
-    fn visit_generic_params(&mut self, params: &mut Vec<ast::GenericParam>) {
-        self.cfg.configure_generic_params(params);
-        noop_visit_generic_params(params, self);
+   fn flat_map_generic_param(
+       &mut self,
+       param: ast::GenericParam
+    ) -> SmallVec<[ast::GenericParam; 1]>
+    {
+        let param = configure!(self, param);
+        noop_flat_map_generic_param(param, self)
     }
 
     fn visit_attribute(&mut self, at: &mut ast::Attribute) {