From 61d4955bb761c9447e59b505bcaad91b66ae49fd Mon Sep 17 00:00:00 2001 From: Pierre-Emmanuel Patry Date: Mon, 27 Nov 2023 14:12:20 +0100 Subject: [PATCH] Make expand visitor inherit from default visitor Many visit functions in the expand visitor simply visit their components like the default visitor. Making the expand visitor inherit from the default visitor allows us to keep all visitor in sync without having to change every visitor. gcc/rust/ChangeLog: * expand/rust-expand-visitor.cc (ExpandVisitor::go): Add call to visit on the crate. (ExpandVisitor::visit): Remove some visit functions in favor of their default visitor counterpart. * expand/rust-expand-visitor.h (class ExpandVisitor): Inherit from default visitor and remove now useless function prototypes. Signed-off-by: Pierre-Emmanuel Patry --- gcc/rust/expand/rust-expand-visitor.cc | 492 +------------------------ gcc/rust/expand/rust-expand-visitor.h | 82 +---- 2 files changed, 9 insertions(+), 565 deletions(-) diff --git a/gcc/rust/expand/rust-expand-visitor.cc b/gcc/rust/expand/rust-expand-visitor.cc index ad473c2dcb0e..a60c47289268 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 @@ -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 ¶m) { @@ -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 ¶m) -{} - void ExpandVisitor::visit (AST::FunctionParam ¶m) { diff --git a/gcc/rust/expand/rust-expand-visitor.h b/gcc/rust/expand/rust-expand-visitor.h index 74f2673655fd..bae9b0f8fa5a 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 @@ class ExpandVisitor : public AST::ASTVisitor /* 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 &expr); @@ -186,21 +188,18 @@ class ExpandVisitor : public AST::ASTVisitor 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 ¯o_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 @@ class ExpandVisitor : public AST::ASTVisitor 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 ¶m) 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 @@ class ExpandVisitor : public AST::ASTVisitor 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;