diff --git a/gcc/rust/expand/rust-expand-visitor.cc b/gcc/rust/expand/rust-expand-visitor.cc
index ad473c2dcb0..a60c4728926 100644
--- a/gcc/rust/expand/rust-expand-visitor.cc
+++ b/gcc/rust/expand/rust-expand-visitor.cc
@@ -39,7 +39,7 @@ is_builtin (AST::Attribute &attr)
 void
 ExpandVisitor::go (AST::Crate &crate)
 {
-  expand_inner_items (crate.items);
+  visit (crate);
 }
 
 static std::unique_ptr<AST::Item>
@@ -474,8 +474,10 @@ ExpandVisitor::expand_trait_method_decl (AST::TraitMethodDecl &decl)
 }
 
 void
-ExpandVisitor::visit (AST::Token &)
-{}
+ExpandVisitor::visit (AST::Crate &crate)
+{
+  expand_inner_items (crate.items);
+}
 
 void
 ExpandVisitor::visit (AST::DelimTokenTree &)
@@ -489,10 +491,6 @@ void
 ExpandVisitor::visit (AST::IdentifierExpr &ident_expr)
 {}
 
-void
-ExpandVisitor::visit (AST::Lifetime &)
-{}
-
 void
 ExpandVisitor::visit (AST::LifetimeParam &)
 {}
@@ -516,10 +514,6 @@ ExpandVisitor::visit (AST::PathInExpression &path)
       expand_generic_args (segment.get_generic_args ());
 }
 
-void
-ExpandVisitor::visit (AST::TypePathSegment &)
-{}
-
 void
 ExpandVisitor::visit (AST::TypePathSegmentGeneric &segment)
 {}
@@ -536,13 +530,6 @@ ExpandVisitor::visit (AST::TypePathSegmentFunction &segment)
     maybe_expand_type (type_path_function.get_return_type ());
 }
 
-void
-ExpandVisitor::visit (AST::TypePath &path)
-{
-  for (auto &segment : path.get_segments ())
-    visit (segment);
-}
-
 void
 ExpandVisitor::visit (AST::QualifiedPathInExpression &path)
 {
@@ -585,30 +572,12 @@ void
 ExpandVisitor::visit (AST::MetaItemPathLit &)
 {}
 
-void
-ExpandVisitor::visit (AST::BorrowExpr &expr)
-{
-  visit (expr.get_borrowed_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::DereferenceExpr &expr)
-{
-  visit (expr.get_dereferenced_expr ());
-}
-
 void
 ExpandVisitor::visit (AST::ErrorPropagationExpr &expr)
 {
   visit (expr.get_propagating_expr ());
 }
 
-void
-ExpandVisitor::visit (AST::NegationExpr &expr)
-{
-  visit (expr.get_negated_expr ());
-}
-
 void
 ExpandVisitor::visit (AST::ArithmeticOrLogicalExpr &expr)
 {
@@ -630,14 +599,6 @@ ExpandVisitor::visit (AST::LazyBooleanExpr &expr)
   maybe_expand_expr (expr.get_right_expr ());
 }
 
-void
-ExpandVisitor::visit (AST::TypeCastExpr &expr)
-{
-  visit (expr.get_casted_expr ());
-
-  visit (expr.get_type_to_cast_to ());
-}
-
 void
 ExpandVisitor::visit (AST::AssignmentExpr &expr)
 {
@@ -658,84 +619,10 @@ ExpandVisitor::visit (AST::GroupedExpr &expr)
   maybe_expand_expr (expr.get_expr_in_parens ());
 }
 
-void
-ExpandVisitor::visit (AST::ArrayElemsValues &elems)
-{
-  for (auto &elem : elems.get_values ())
-    visit (elem);
-}
-
-void
-ExpandVisitor::visit (AST::ArrayElemsCopied &elems)
-{
-  visit (elems.get_elem_to_copy ());
-  visit (elems.get_num_copies ());
-}
-
-void
-ExpandVisitor::visit (AST::ArrayExpr &expr)
-{
-  visit (expr.get_array_elems ());
-}
-
-void
-ExpandVisitor::visit (AST::ArrayIndexExpr &expr)
-{
-  visit (expr.get_array_expr ());
-  visit (expr.get_index_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::TupleExpr &expr)
-{
-  for (auto &element : expr.get_tuple_elems ())
-    visit (element);
-}
-
-void
-ExpandVisitor::visit (AST::TupleIndexExpr &expr)
-{
-  visit (expr.get_tuple_expr ());
-
-  // We can't have macro invocations for tuple indexes, right? Need a test!
-}
-
 void
 ExpandVisitor::visit (AST::StructExprStruct &expr)
 {}
 
-void
-ExpandVisitor::visit (AST::StructExprFieldIdentifier &)
-{}
-
-void
-ExpandVisitor::visit (AST::StructExprFieldIdentifierValue &field)
-{
-  visit (field.get_value ());
-}
-
-void
-ExpandVisitor::visit (AST::StructExprFieldIndexValue &field)
-{
-  visit (field.get_value ());
-}
-
-void
-ExpandVisitor::visit (AST::StructExprStructFields &expr)
-{
-  for (auto &field : expr.get_fields ())
-    visit (field);
-
-  if (expr.has_struct_base ())
-    visit (expr.get_struct_base ().get_base_struct ());
-}
-
-void
-ExpandVisitor::visit (AST::StructExprStructBase &expr)
-{
-  visit (expr.get_struct_base ().get_base_struct ());
-}
-
 void
 ExpandVisitor::visit (AST::CallExpr &expr)
 {
@@ -754,12 +641,6 @@ ExpandVisitor::visit (AST::MethodCallExpr &expr)
     maybe_expand_expr (param);
 }
 
-void
-ExpandVisitor::visit (AST::FieldAccessExpr &expr)
-{
-  visit (expr.get_receiver_expr ());
-}
-
 void
 ExpandVisitor::visit (AST::ClosureExprInner &expr)
 {
@@ -792,93 +673,6 @@ void
 ExpandVisitor::visit (AST::ContinueExpr &expr)
 {}
 
-void
-ExpandVisitor::visit (AST::BreakExpr &expr)
-{
-  if (expr.has_break_expr ())
-    visit (expr.get_break_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::RangeFromToExpr &expr)
-{
-  visit (expr.get_from_expr ());
-  visit (expr.get_to_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::RangeFromExpr &expr)
-{
-  visit (expr.get_from_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::RangeToExpr &expr)
-{
-  visit (expr.get_to_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::RangeFullExpr &)
-{}
-
-void
-ExpandVisitor::visit (AST::RangeFromToInclExpr &expr)
-{
-  visit (expr.get_from_expr ());
-  visit (expr.get_to_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::RangeToInclExpr &expr)
-{
-  visit (expr.get_to_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::ReturnExpr &expr)
-{
-  if (expr.has_returned_expr ())
-    visit (expr.get_returned_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::UnsafeBlockExpr &expr)
-{
-  visit (expr.get_block_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::LoopExpr &expr)
-{
-  visit (expr.get_loop_block ());
-}
-
-void
-ExpandVisitor::visit (AST::WhileLoopExpr &expr)
-{
-  visit (expr.get_predicate_expr ());
-  visit (expr.get_loop_block ());
-}
-
-void
-ExpandVisitor::visit (AST::WhileLetLoopExpr &expr)
-{
-  for (auto &pattern : expr.get_patterns ())
-    visit (pattern);
-
-  visit (expr.get_scrutinee_expr ());
-  visit (expr.get_loop_block ());
-}
-
-void
-ExpandVisitor::visit (AST::ForLoopExpr &expr)
-{
-  visit (expr.get_pattern ());
-  visit (expr.get_iterator_expr ());
-  visit (expr.get_loop_block ());
-}
-
 void
 ExpandVisitor::visit (AST::IfExpr &expr)
 {
@@ -932,18 +726,6 @@ ExpandVisitor::visit (AST::MatchExpr &expr)
     }
 }
 
-void
-ExpandVisitor::visit (AST::AwaitExpr &expr)
-{
-  visit (expr.get_awaited_expr ());
-}
-
-void
-ExpandVisitor::visit (AST::AsyncBlockExpr &expr)
-{
-  visit (expr.get_block_expr ());
-}
-
 void
 ExpandVisitor::visit (AST::TypeParam &param)
 {
@@ -967,17 +749,6 @@ ExpandVisitor::visit (AST::TypeBoundWhereClauseItem &item)
     visit (bound);
 }
 
-void
-ExpandVisitor::visit (AST::Module &module)
-{
-  if (module.get_kind () == AST::Module::ModuleKind::LOADED)
-    {
-      visit_inner_attrs (module);
-      for (auto &item : module.get_items ())
-	visit (item);
-    }
-}
-
 void
 ExpandVisitor::visit (AST::ExternCrate &crate)
 {}
@@ -1019,12 +790,6 @@ ExpandVisitor::visit (AST::Function &function)
     visit (*function.get_definition ());
 }
 
-void
-ExpandVisitor::visit (AST::TypeAlias &type_alias)
-{
-  visit (type_alias.get_type_aliased ());
-}
-
 void
 ExpandVisitor::visit (AST::StructStruct &struct_item)
 {
@@ -1071,16 +836,6 @@ ExpandVisitor::visit (AST::EnumItemDiscriminant &item)
   maybe_expand_expr (item.get_expr ());
 }
 
-void
-ExpandVisitor::visit (AST::Enum &enum_item)
-{
-  for (auto &generic : enum_item.get_generic_params ())
-    visit (generic);
-
-  for (auto &variant : enum_item.get_variants ())
-    variant->accept_vis (*this);
-}
-
 void
 ExpandVisitor::visit (AST::Union &union_item)
 {
@@ -1134,13 +889,6 @@ ExpandVisitor::visit (AST::TraitItemConst &const_item)
     maybe_expand_expr (const_item.get_expr ());
 }
 
-void
-ExpandVisitor::visit (AST::TraitItemType &item)
-{
-  for (auto &type : item.get_type_param_bounds ())
-    visit (type);
-}
-
 void
 ExpandVisitor::visit (AST::Trait &trait)
 {
@@ -1256,11 +1004,6 @@ ExpandVisitor::visit (AST::ExternBlock &block)
 			 block.get_extern_items (), extractor);
 }
 
-// I don't think it would be possible to strip macros without expansion
-void
-ExpandVisitor::visit (AST::MacroMatchFragment &)
-{}
-
 void
 ExpandVisitor::visit (AST::MacroMatchRepetition &)
 {}
@@ -1281,14 +1024,6 @@ void
 ExpandVisitor::visit (AST::MetaItemSeq &)
 {}
 
-void
-ExpandVisitor::visit (AST::MetaWord &)
-{}
-
-void
-ExpandVisitor::visit (AST::MetaNameValueStr &)
-{}
-
 void
 ExpandVisitor::visit (AST::MetaListPaths &)
 {}
@@ -1297,152 +1032,16 @@ void
 ExpandVisitor::visit (AST::MetaListNameValueStr &)
 {}
 
-void
-ExpandVisitor::visit (AST::LiteralPattern &)
-{}
-
-void
-ExpandVisitor::visit (AST::IdentifierPattern &pattern)
-{
-  if (pattern.has_pattern_to_bind ())
-    visit (pattern.get_pattern_to_bind ());
-}
-
-void
-ExpandVisitor::visit (AST::WildcardPattern &)
-{}
-
-void
-ExpandVisitor::visit (AST::RestPattern &)
-{}
-
-void
-ExpandVisitor::visit (AST::RangePatternBoundLiteral &)
-{}
-
-void
-ExpandVisitor::visit (AST::RangePatternBoundPath &bound)
-{
-  visit (bound.get_path ());
-}
-
-void
-ExpandVisitor::visit (AST::RangePatternBoundQualPath &bound)
-{
-  visit (bound.get_qualified_path ());
-}
-
-void
-ExpandVisitor::visit (AST::RangePattern &pattern)
-{
-  visit (pattern.get_lower_bound ());
-  visit (pattern.get_upper_bound ());
-}
-
-void
-ExpandVisitor::visit (AST::ReferencePattern &pattern)
-{
-  visit (pattern.get_referenced_pattern ());
-}
-
-void
-ExpandVisitor::visit (AST::StructPatternFieldTuplePat &field)
-{
-  visit (field.get_index_pattern ());
-}
-
-void
-ExpandVisitor::visit (AST::StructPatternFieldIdentPat &field)
-{
-  visit (field.get_ident_pattern ());
-}
-
 void
 ExpandVisitor::visit (AST::StructPatternFieldIdent &field)
 {}
 
-void
-ExpandVisitor::visit (AST::StructPattern &pattern)
-{
-  visit (pattern.get_path ());
-
-  for (auto &inner :
-       pattern.get_struct_pattern_elems ().get_struct_pattern_fields ())
-    visit (inner);
-}
-
-void
-ExpandVisitor::visit (AST::TupleStructItemsNoRange &tuple_items)
-{
-  for (auto &pattern : tuple_items.get_patterns ())
-    visit (pattern);
-}
-
-void
-ExpandVisitor::visit (AST::TupleStructItemsRange &tuple_items)
-{
-  for (auto &lower_pattern : tuple_items.get_lower_patterns ())
-    visit (lower_pattern);
-  for (auto &upper_pattern : tuple_items.get_upper_patterns ())
-    visit (upper_pattern);
-}
-
-void
-ExpandVisitor::visit (AST::TupleStructPattern &pattern)
-{
-  visit (pattern.get_path ());
-
-  if (pattern.has_items ())
-    visit (pattern.get_items ());
-}
-
-void
-ExpandVisitor::visit (AST::TuplePatternItemsMultiple &tuple_items)
-{
-  for (auto &pattern : tuple_items.get_patterns ())
-    visit (pattern);
-}
-
-void
-ExpandVisitor::visit (AST::TuplePatternItemsRanged &tuple_items)
-{
-  for (auto &pattern : tuple_items.get_lower_patterns ())
-    visit (pattern);
-  for (auto &pattern : tuple_items.get_upper_patterns ())
-    visit (pattern);
-}
-
-void
-ExpandVisitor::visit (AST::TuplePattern &pattern)
-{
-  if (pattern.has_tuple_pattern_items ())
-    visit (pattern.get_items ());
-}
-
 void
 ExpandVisitor::visit (AST::GroupedPattern &pattern)
 {
   visit (pattern.get_pattern_in_parens ());
 }
 
-void
-ExpandVisitor::visit (AST::SlicePattern &pattern)
-{
-  for (auto &item : pattern.get_items ())
-    visit (item);
-}
-
-void
-ExpandVisitor::visit (AST::AltPattern &pattern)
-{
-  for (auto &alt : pattern.get_alts ())
-    visit (alt);
-}
-
-void
-ExpandVisitor::visit (AST::EmptyStmt &)
-{}
-
 void
 ExpandVisitor::visit (AST::LetStmt &stmt)
 {
@@ -1461,83 +1060,6 @@ ExpandVisitor::visit (AST::ExprStmt &stmt)
   maybe_expand_expr (stmt.get_expr ());
 }
 
-void
-ExpandVisitor::visit (AST::TraitBound &bound)
-{
-  visit (bound.get_type_path ());
-}
-
-void
-ExpandVisitor::visit (AST::ImplTraitType &type)
-{
-  for (auto &bound : type.get_type_param_bounds ())
-    visit (bound);
-}
-
-void
-ExpandVisitor::visit (AST::TraitObjectType &type)
-{
-  for (auto &bound : type.get_type_param_bounds ())
-    visit (bound);
-}
-
-void
-ExpandVisitor::visit (AST::ParenthesisedType &type)
-{
-  visit (type.get_type_in_parens ());
-}
-
-void
-ExpandVisitor::visit (AST::ImplTraitTypeOneBound &type)
-{
-  visit (type.get_trait_bound ());
-}
-
-void
-ExpandVisitor::visit (AST::TraitObjectTypeOneBound &type)
-{
-  visit (type.get_trait_bound ());
-}
-
-void
-ExpandVisitor::visit (AST::TupleType &type)
-{
-  for (auto &elem : type.get_elems ())
-    visit (elem);
-}
-
-void
-ExpandVisitor::visit (AST::NeverType &)
-{}
-
-void
-ExpandVisitor::visit (AST::RawPointerType &type)
-{
-  visit (type.get_type_pointed_to ());
-}
-
-void
-ExpandVisitor::visit (AST::ReferenceType &type)
-{
-  visit (type.get_type_referenced ());
-}
-
-void
-ExpandVisitor::visit (AST::ArrayType &type)
-{
-  visit (type.get_elem_type ());
-}
-
-void
-ExpandVisitor::visit (AST::SliceType &type)
-{
-  visit (type.get_elem_type ());
-}
-
-void
-ExpandVisitor::visit (AST::InferredType &)
-{}
-
 void
 ExpandVisitor::visit (AST::BareFunctionType &type)
 {
@@ -1550,10 +1072,6 @@ ExpandVisitor::visit (AST::BareFunctionType &type)
     visit (type.get_return_type ());
 }
 
-void
-ExpandVisitor::visit (AST::VariadicParam &param)
-{}
-
 void
 ExpandVisitor::visit (AST::FunctionParam &param)
 {
diff --git a/gcc/rust/expand/rust-expand-visitor.h b/gcc/rust/expand/rust-expand-visitor.h
index 74f2673655f..bae9b0f8fa5 100644
--- a/gcc/rust/expand/rust-expand-visitor.h
+++ b/gcc/rust/expand/rust-expand-visitor.h
@@ -37,7 +37,7 @@ is_derive (AST::Attribute &attr);
 bool
 is_builtin (AST::Attribute &attr);
 
-class ExpandVisitor : public AST::ASTVisitor
+class ExpandVisitor : public AST::DefaultASTVisitor
 {
 public:
   ExpandVisitor (MacroExpander &expander) : expander (expander) {}
@@ -45,6 +45,8 @@ public:
   /* Expand all of the macro invocations currently contained in a crate */
   void go (AST::Crate &crate);
 
+  using AST::DefaultASTVisitor::visit;
+
   /* Maybe expand a macro invocation in lieu of an expression */
   void maybe_expand_expr (std::unique_ptr<AST::Expr> &expr);
 
@@ -186,21 +188,18 @@ public:
     maybe_expand_type (type);
   }
 
-  void visit (AST::Token &) override;
+  void visit (AST::Crate &crate) override;
   void visit (AST::DelimTokenTree &) override;
   void visit (AST::AttrInputMetaItemContainer &) override;
   void visit (AST::IdentifierExpr &ident_expr) override;
-  void visit (AST::Lifetime &) override;
   void visit (AST::LifetimeParam &) override;
   void visit (AST::ConstGenericParam &) override;
 
   void visit (AST::MacroInvocation &macro_invoc) override;
 
   void visit (AST::PathInExpression &path) override;
-  void visit (AST::TypePathSegment &) override;
   void visit (AST::TypePathSegmentGeneric &segment) override;
   void visit (AST::TypePathSegmentFunction &segment) override;
-  void visit (AST::TypePath &path) override;
   void visit (AST::QualifiedPathInExpression &path) override;
   void visit (AST::QualifiedPathInType &path) override;
 
@@ -209,84 +208,49 @@ public:
   void visit (AST::AttrInputMacro &) override;
   void visit (AST::MetaItemLitExpr &) override;
   void visit (AST::MetaItemPathLit &) override;
-  void visit (AST::BorrowExpr &expr) override;
-  void visit (AST::DereferenceExpr &expr) override;
   void visit (AST::ErrorPropagationExpr &expr) override;
-  void visit (AST::NegationExpr &expr) override;
   void visit (AST::ArithmeticOrLogicalExpr &expr) override;
   void visit (AST::ComparisonExpr &expr) override;
   void visit (AST::LazyBooleanExpr &expr) override;
-  void visit (AST::TypeCastExpr &expr) override;
   void visit (AST::AssignmentExpr &expr) override;
   void visit (AST::CompoundAssignmentExpr &expr) override;
   void visit (AST::GroupedExpr &expr) override;
-  void visit (AST::ArrayElemsValues &elems) override;
-  void visit (AST::ArrayElemsCopied &elems) override;
-  void visit (AST::ArrayExpr &expr) override;
-  void visit (AST::ArrayIndexExpr &expr) override;
-  void visit (AST::TupleExpr &expr) override;
-  void visit (AST::TupleIndexExpr &expr) override;
   void visit (AST::StructExprStruct &expr) override;
-  void visit (AST::StructExprFieldIdentifier &) override;
-  void visit (AST::StructExprFieldIdentifierValue &field) override;
 
-  void visit (AST::StructExprFieldIndexValue &field) override;
-  void visit (AST::StructExprStructFields &expr) override;
-  void visit (AST::StructExprStructBase &expr) override;
   void visit (AST::CallExpr &expr) override;
   void visit (AST::MethodCallExpr &expr) override;
-  void visit (AST::FieldAccessExpr &expr) override;
   void visit (AST::ClosureExprInner &expr) override;
 
   void visit (AST::BlockExpr &expr) override;
 
   void visit (AST::ClosureExprInnerTyped &expr) override;
   void visit (AST::ContinueExpr &expr) override;
-  void visit (AST::BreakExpr &expr) override;
-  void visit (AST::RangeFromToExpr &expr) override;
-  void visit (AST::RangeFromExpr &expr) override;
-  void visit (AST::RangeToExpr &expr) override;
-  void visit (AST::RangeFullExpr &) override;
-  void visit (AST::RangeFromToInclExpr &expr) override;
-  void visit (AST::RangeToInclExpr &expr) override;
-  void visit (AST::ReturnExpr &expr) override;
-  void visit (AST::UnsafeBlockExpr &expr) override;
-  void visit (AST::LoopExpr &expr) override;
-  void visit (AST::WhileLoopExpr &expr) override;
-  void visit (AST::WhileLetLoopExpr &expr) override;
-  void visit (AST::ForLoopExpr &expr) override;
   void visit (AST::IfExpr &expr) override;
   void visit (AST::IfExprConseqElse &expr) override;
   void visit (AST::IfLetExpr &expr) override;
   void visit (AST::IfLetExprConseqElse &expr) override;
   void visit (AST::MatchExpr &expr) override;
-  void visit (AST::AwaitExpr &expr) override;
-  void visit (AST::AsyncBlockExpr &expr) override;
   void visit (AST::TypeParam &param) override;
   void visit (AST::LifetimeWhereClauseItem &) override;
   void visit (AST::TypeBoundWhereClauseItem &item) override;
-  void visit (AST::Module &module) override;
   void visit (AST::ExternCrate &crate) override;
   void visit (AST::UseTreeGlob &) override;
   void visit (AST::UseTreeList &) override;
   void visit (AST::UseTreeRebind &) override;
   void visit (AST::UseDeclaration &use_decl) override;
   void visit (AST::Function &function) override;
-  void visit (AST::TypeAlias &type_alias) override;
   void visit (AST::StructStruct &struct_item) override;
   void visit (AST::TupleStruct &tuple_struct) override;
   void visit (AST::EnumItem &item) override;
   void visit (AST::EnumItemTuple &item) override;
   void visit (AST::EnumItemStruct &item) override;
   void visit (AST::EnumItemDiscriminant &item) override;
-  void visit (AST::Enum &enum_item) override;
   void visit (AST::Union &union_item) override;
   void visit (AST::ConstantItem &const_item) override;
   void visit (AST::StaticItem &static_item) override;
   void visit (AST::TraitItemFunc &item) override;
   void visit (AST::TraitItemMethod &item) override;
   void visit (AST::TraitItemConst &item) override;
-  void visit (AST::TraitItemType &item) override;
   void visit (AST::Trait &trait) override;
   void visit (AST::InherentImpl &impl) override;
   void visit (AST::TraitImpl &impl) override;
@@ -296,58 +260,20 @@ public:
   void visit (AST::ExternBlock &block) override;
 
   // I don't think it would be possible to strip macros without expansion
-  void visit (AST::MacroMatchFragment &) override;
   void visit (AST::MacroMatchRepetition &) override;
   void visit (AST::MacroMatcher &) override;
   void visit (AST::MacroRulesDefinition &rules_def) override;
   void visit (AST::MetaItemPath &) override;
   void visit (AST::MetaItemSeq &) override;
-  void visit (AST::MetaWord &) override;
-  void visit (AST::MetaNameValueStr &) override;
   void visit (AST::MetaListPaths &) override;
   void visit (AST::MetaListNameValueStr &) override;
-  void visit (AST::LiteralPattern &) override;
-  void visit (AST::IdentifierPattern &pattern) override;
-  void visit (AST::WildcardPattern &) override;
-  void visit (AST::RestPattern &) override;
-  void visit (AST::RangePatternBoundLiteral &) override;
-  void visit (AST::RangePatternBoundPath &bound) override;
-  void visit (AST::RangePatternBoundQualPath &bound) override;
-  void visit (AST::RangePattern &pattern) override;
-  void visit (AST::ReferencePattern &pattern) override;
-  void visit (AST::StructPatternFieldTuplePat &field) override;
-  void visit (AST::StructPatternFieldIdentPat &field) override;
   void visit (AST::StructPatternFieldIdent &field) override;
-  void visit (AST::StructPattern &pattern) override;
-  void visit (AST::TupleStructItemsNoRange &tuple_items) override;
-  void visit (AST::TupleStructItemsRange &tuple_items) override;
-  void visit (AST::TupleStructPattern &pattern) override;
-  void visit (AST::TuplePatternItemsMultiple &tuple_items) override;
-  void visit (AST::TuplePatternItemsRanged &tuple_items) override;
-  void visit (AST::TuplePattern &pattern) override;
   void visit (AST::GroupedPattern &pattern) override;
-  void visit (AST::SlicePattern &pattern) override;
-  void visit (AST::AltPattern &pattern) override;
 
-  void visit (AST::EmptyStmt &) override;
   void visit (AST::LetStmt &stmt) override;
   void visit (AST::ExprStmt &stmt) override;
 
-  void visit (AST::TraitBound &bound) override;
-  void visit (AST::ImplTraitType &type) override;
-  void visit (AST::TraitObjectType &type) override;
-  void visit (AST::ParenthesisedType &type) override;
-  void visit (AST::ImplTraitTypeOneBound &type) override;
-  void visit (AST::TraitObjectTypeOneBound &type) override;
-  void visit (AST::TupleType &type) override;
-  void visit (AST::NeverType &) override;
-  void visit (AST::RawPointerType &type) override;
-  void visit (AST::ReferenceType &type) override;
-  void visit (AST::ArrayType &type) override;
-  void visit (AST::SliceType &type) override;
-  void visit (AST::InferredType &) override;
   void visit (AST::BareFunctionType &type) override;
-  void visit (AST::VariadicParam &type) override;
   void visit (AST::FunctionParam &type) override;
   void visit (AST::SelfParam &type) override;
 
