[thirdparty/gcc.git] / gcc / rust / expand / rust-attribute-visitor.h

// Copyright (C) 2020-2024 Free Software Foundation, Inc.

// This file is part of GCC.

// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.

// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.

// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

#include "rust-ast-visitor.h"
#include "rust-ast.h"
#include "rust-macro-expand.h"

namespace Rust {
// Visitor used to expand attributes.
class AttrVisitor : public AST::ASTVisitor
{
private:
  MacroExpander &expander;
  void maybe_expand_expr (std::unique_ptr<AST::Expr> &expr);
  void maybe_expand_type (std::unique_ptr<AST::Type> &expr);

public:
  AttrVisitor (MacroExpander &expander) : expander (expander) {}

  void expand_struct_fields (std::vector<AST::StructField> &fields);
  void expand_tuple_fields (std::vector<AST::TupleField> &fields);
  void expand_function_params (std::vector<AST::FunctionParam> &params);
  void expand_generic_args (AST::GenericArgs &args);
  void expand_qualified_path_type (AST::QualifiedPathType &path_type);
  void expand_closure_params (std::vector<AST::ClosureParam> &params);
  void expand_self_param (AST::SelfParam &self_param);
  void expand_where_clause (AST::WhereClause &where_clause);
  void expand_trait_function_decl (AST::TraitFunctionDecl &decl);
  void expand_trait_method_decl (AST::TraitMethodDecl &decl);

  /**
   * Expand a set of values, erasing them if they are marked for strip, and
   * replacing them with expanded macro nodes if necessary.
   * This function is slightly different from `expand_pointer_allow_strip` as
   * it can only be called in certain expansion contexts - where macro
   * invocations are allowed.
   *
   * @param ctx Context to use for macro expansion
   * @param values Iterable reference over values to replace or erase
   * @param extractor Function to call when replacing values with the content
   * 		of an expanded AST node
   */
  template <typename T, typename U>
  void expand_macro_children (MacroExpander::ContextType ctx, T &values,
			      std::function<U (AST::SingleASTNode)> extractor)
  {
    expander.push_context (ctx);

    for (auto it = values.begin (); it != values.end ();)
      {
	auto &value = *it;

	// mark for stripping if required
	value->accept_vis (*this);

	auto final_fragment = expander.take_expanded_fragment ();

	if (final_fragment.should_expand ())
	  {
	    it = values.erase (it);
	    for (auto &node : final_fragment.get_nodes ())
	      {
		auto new_node = extractor (node);
		if (new_node != nullptr && !new_node->is_marked_for_strip ())
		  {
		    it = values.insert (it, std::move (new_node));
		    it++;
		  }
	      }
	  }
	else if (value->is_marked_for_strip ())
	  {
	    it = values.erase (it);
	  }
	else
	  {
	    ++it;
	  }
      }

    expander.pop_context ();
  }

  template <typename T> void expand_pointer_allow_strip (T &values)
  {
    for (auto it = values.begin (); it != values.end ();)
      {
	auto &value = *it;

	// mark for stripping if required
	value->accept_vis (*this);
	if (value->is_marked_for_strip ())
	  {
	    it = values.erase (it);
	  }
	else
	  {
	    ++it;
	  }
      }
  }

  void visit (AST::Token &) 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;

  void visit (AST::LiteralExpr &expr) override;
  void visit (AST::AttrInputLiteral &) 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::IfExprConseqIf &expr) override;
  void visit (AST::IfExprConseqIfLet &expr) override;
  void visit (AST::IfLetExpr &expr) override;
  void visit (AST::IfLetExprConseqElse &expr) override;
  void visit (AST::IfLetExprConseqIf &expr) override;
  void visit (AST::IfLetExprConseqIfLet &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::Method &method) 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;
  void visit (AST::ExternalStaticItem &item) override;
  void visit (AST::ExternalFunctionItem &item) override;
  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::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::ExprStmtWithoutBlock &stmt) override;
  void visit (AST::ExprStmtWithBlock &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;
};
} // namespace Rust
Commit	Line	Data
a945c346	1	// Copyright (C) 2020-2024 Free Software Foundation, Inc.
1841081a AC	2
	3	// This file is part of GCC.
	4
	5	// GCC is free software; you can redistribute it and/or modify it under
	6	// the terms of the GNU General Public License as published by the Free
	7	// Software Foundation; either version 3, or (at your option) any later
	8	// version.
	9
	10	// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
	11	// WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	13	// for more details.
	14
	15	// You should have received a copy of the GNU General Public License
	16	// along with GCC; see the file COPYING3. If not see
	17	// <http://www.gnu.org/licenses/>.
	18
	19	#include "rust-ast-visitor.h"
	20	#include "rust-ast.h"
	21	#include "rust-macro-expand.h"
	22
	23	namespace Rust {
	24	// Visitor used to expand attributes.
	25	class AttrVisitor : public AST::ASTVisitor
	26	{
	27	private:
	28	MacroExpander &expander;
	29	void maybe_expand_expr (std::unique_ptr<AST::Expr> &expr);
	30	void maybe_expand_type (std::unique_ptr<AST::Type> &expr);
	31
	32	public:
	33	AttrVisitor (MacroExpander &expander) : expander (expander) {}
	34
	35	void expand_struct_fields (std::vector<AST::StructField> &fields);
	36	void expand_tuple_fields (std::vector<AST::TupleField> &fields);
	37	void expand_function_params (std::vector<AST::FunctionParam> &params);
	38	void expand_generic_args (AST::GenericArgs &args);
	39	void expand_qualified_path_type (AST::QualifiedPathType &path_type);
	40	void expand_closure_params (std::vector<AST::ClosureParam> &params);
	41	void expand_self_param (AST::SelfParam &self_param);
	42	void expand_where_clause (AST::WhereClause &where_clause);
	43	void expand_trait_function_decl (AST::TraitFunctionDecl &decl);
	44	void expand_trait_method_decl (AST::TraitMethodDecl &decl);
	45
1841081a AC	46	/**
	47	* Expand a set of values, erasing them if they are marked for strip, and
	48	* replacing them with expanded macro nodes if necessary.
	49	* This function is slightly different from `expand_pointer_allow_strip` as
	50	* it can only be called in certain expansion contexts - where macro
	51	* invocations are allowed.
	52	*
	53	* @param ctx Context to use for macro expansion
	54	* @param values Iterable reference over values to replace or erase
	55	* @param extractor Function to call when replacing values with the content
	56	* of an expanded AST node
	57	*/
	58	template <typename T, typename U>
	59	void expand_macro_children (MacroExpander::ContextType ctx, T &values,
	60	std::function<U (AST::SingleASTNode)> extractor)
	61	{
	62	expander.push_context (ctx);
	63
	64	for (auto it = values.begin (); it != values.end ();)
	65	{
	66	auto &value = *it;
	67
	68	// mark for stripping if required
	69	value->accept_vis (*this);
	70
38216691	71	auto final_fragment = expander.take_expanded_fragment ();
1841081a AC	72
	73	if (final_fragment.should_expand ())
	74	{
	75	it = values.erase (it);
	76	for (auto &node : final_fragment.get_nodes ())
	77	{
	78	auto new_node = extractor (node);
	79	if (new_node != nullptr && !new_node->is_marked_for_strip ())
	80	{
	81	it = values.insert (it, std::move (new_node));
	82	it++;
	83	}
	84	}
	85	}
	86	else if (value->is_marked_for_strip ())
	87	{
	88	it = values.erase (it);
	89	}
	90	else
	91	{
	92	++it;
	93	}
	94	}
	95
	96	expander.pop_context ();
	97	}
	98
	99	template <typename T> void expand_pointer_allow_strip (T &values)
	100	{
	101	for (auto it = values.begin (); it != values.end ();)
	102	{
	103	auto &value = *it;
	104
	105	// mark for stripping if required
	106	value->accept_vis (*this);
	107	if (value->is_marked_for_strip ())
	108	{
	109	it = values.erase (it);
	110	}
	111	else
	112	{
	113	++it;
	114	}
	115	}
	116	}
	117
	118	void visit (AST::Token &) override;
	119	void visit (AST::DelimTokenTree &) override;
	120	void visit (AST::AttrInputMetaItemContainer &) override;
	121	void visit (AST::IdentifierExpr &ident_expr) override;
	122	void visit (AST::Lifetime &) override;
	123	void visit (AST::LifetimeParam &) override;
	124	void visit (AST::ConstGenericParam &) override;
	125
	126	void visit (AST::MacroInvocation &macro_invoc) override;
	127
	128	void visit (AST::PathInExpression &path) override;
	129	void visit (AST::TypePathSegment &) override;
	130	void visit (AST::TypePathSegmentGeneric &segment) override;
	131	void visit (AST::TypePathSegmentFunction &segment) override;
	132	void visit (AST::TypePath &path) override;
	133	void visit (AST::QualifiedPathInExpression &path) override;
	134	void visit (AST::QualifiedPathInType &path) override;
	135
136	void visit (AST::LiteralExpr &expr) override;
137	void visit (AST::AttrInputLiteral &) override;
138	void visit (AST::MetaItemLitExpr &) override;
139	void visit (AST::MetaItemPathLit &) override;
140	void visit (AST::BorrowExpr &expr) override;
141	void visit (AST::DereferenceExpr &expr) override;
142	void visit (AST::ErrorPropagationExpr &expr) override;
143	void visit (AST::NegationExpr &expr) override;
144	void visit (AST::ArithmeticOrLogicalExpr &expr) override;
145	void visit (AST::ComparisonExpr &expr) override;
146	void visit (AST::LazyBooleanExpr &expr) override;
147	void visit (AST::TypeCastExpr &expr) override;
148	void visit (AST::AssignmentExpr &expr) override;
149	void visit (AST::CompoundAssignmentExpr &expr) override;
150	void visit (AST::GroupedExpr &expr) override;
151	void visit (AST::ArrayElemsValues &elems) override;
152	void visit (AST::ArrayElemsCopied &elems) override;
153	void visit (AST::ArrayExpr &expr) override;
154	void visit (AST::ArrayIndexExpr &expr) override;
155	void visit (AST::TupleExpr &expr) override;
156	void visit (AST::TupleIndexExpr &expr) override;
157	void visit (AST::StructExprStruct &expr) override;
158	void visit (AST::StructExprFieldIdentifier &) override;
159	void visit (AST::StructExprFieldIdentifierValue &field) override;
160
161	void visit (AST::StructExprFieldIndexValue &field) override;
162	void visit (AST::StructExprStructFields &expr) override;
163	void visit (AST::StructExprStructBase &expr) override;
164	void visit (AST::CallExpr &expr) override;
165	void visit (AST::MethodCallExpr &expr) override;
166	void visit (AST::FieldAccessExpr &expr) override;
167	void visit (AST::ClosureExprInner &expr) override;
168
169	void visit (AST::BlockExpr &expr) override;
170
171	void visit (AST::ClosureExprInnerTyped &expr) override;
172	void visit (AST::ContinueExpr &expr) override;
173	void visit (AST::BreakExpr &expr) override;
174	void visit (AST::RangeFromToExpr &expr) override;
175	void visit (AST::RangeFromExpr &expr) override;
176	void visit (AST::RangeToExpr &expr) override;
177	void visit (AST::RangeFullExpr &) override;
178	void visit (AST::RangeFromToInclExpr &expr) override;
179	void visit (AST::RangeToInclExpr &expr) override;
180	void visit (AST::ReturnExpr &expr) override;
181	void visit (AST::UnsafeBlockExpr &expr) override;
182	void visit (AST::LoopExpr &expr) override;
183	void visit (AST::WhileLoopExpr &expr) override;
184	void visit (AST::WhileLetLoopExpr &expr) override;
185	void visit (AST::ForLoopExpr &expr) override;
186	void visit (AST::IfExpr &expr) override;
187	void visit (AST::IfExprConseqElse &expr) override;
188	void visit (AST::IfExprConseqIf &expr) override;
189	void visit (AST::IfExprConseqIfLet &expr) override;
190	void visit (AST::IfLetExpr &expr) override;
191	void visit (AST::IfLetExprConseqElse &expr) override;
192	void visit (AST::IfLetExprConseqIf &expr) override;
193	void visit (AST::IfLetExprConseqIfLet &expr) override;
194	void visit (AST::MatchExpr &expr) override;
195	void visit (AST::AwaitExpr &expr) override;
196	void visit (AST::AsyncBlockExpr &expr) override;
197	void visit (AST::TypeParam &param) override;
198	void visit (AST::LifetimeWhereClauseItem &) override;
199	void visit (AST::TypeBoundWhereClauseItem &item) override;
200	void visit (AST::Method &method) override;
201	void visit (AST::Module &module) override;
202	void visit (AST::ExternCrate &crate) override;
203	void visit (AST::UseTreeGlob &) override;
204	void visit (AST::UseTreeList &) override;
205	void visit (AST::UseTreeRebind &) override;
206	void visit (AST::UseDeclaration &use_decl) override;
207	void visit (AST::Function &function) override;
208	void visit (AST::TypeAlias &type_alias) override;
209	void visit (AST::StructStruct &struct_item) override;
210	void visit (AST::TupleStruct &tuple_struct) override;
211	void visit (AST::EnumItem &item) override;
212	void visit (AST::EnumItemTuple &item) override;
213	void visit (AST::EnumItemStruct &item) override;
214	void visit (AST::EnumItemDiscriminant &item) override;
215	void visit (AST::Enum &enum_item) override;
216	void visit (AST::Union &union_item) override;
217	void visit (AST::ConstantItem &const_item) override;
218	void visit (AST::StaticItem &static_item) override;
219	void visit (AST::TraitItemFunc &item) override;
220	void visit (AST::TraitItemMethod &item) override;
221	void visit (AST::TraitItemConst &item) override;
222	void visit (AST::TraitItemType &item) override;
223	void visit (AST::Trait &trait) override;
224	void visit (AST::InherentImpl &impl) override;
225	void visit (AST::TraitImpl &impl) override;
226	void visit (AST::ExternalStaticItem &item) override;
227	void visit (AST::ExternalFunctionItem &item) override;
228	void visit (AST::ExternBlock &block) override;
229
230	// I don't think it would be possible to strip macros without expansion
231	void visit (AST::MacroMatchFragment &) override;
232	void visit (AST::MacroMatchRepetition &) override;
233	void visit (AST::MacroMatcher &) override;
234	void visit (AST::MacroRulesDefinition &rules_def) override;
235	void visit (AST::MetaItemPath &) override;
236	void visit (AST::MetaItemSeq &) override;
237	void visit (AST::MetaWord &) override;
238	void visit (AST::MetaNameValueStr &) override;
239	void visit (AST::MetaListPaths &) override;
240	void visit (AST::MetaListNameValueStr &) override;
241	void visit (AST::LiteralPattern &) override;
242	void visit (AST::IdentifierPattern &pattern) override;
243	void visit (AST::WildcardPattern &) override;
244	void visit (AST::RangePatternBoundLiteral &) override;
245	void visit (AST::RangePatternBoundPath &bound) override;
246	void visit (AST::RangePatternBoundQualPath &bound) override;
247	void visit (AST::RangePattern &pattern) override;
248	void visit (AST::ReferencePattern &pattern) override;
249	void visit (AST::StructPatternFieldTuplePat &field) override;
250	void visit (AST::StructPatternFieldIdentPat &field) override;
251	void visit (AST::StructPatternFieldIdent &field) override;
252	void visit (AST::StructPattern &pattern) override;
253	void visit (AST::TupleStructItemsNoRange &tuple_items) override;
254	void visit (AST::TupleStructItemsRange &tuple_items) override;
255	void visit (AST::TupleStructPattern &pattern) override;
256	void visit (AST::TuplePatternItemsMultiple &tuple_items) override;
257	void visit (AST::TuplePatternItemsRanged &tuple_items) override;
258	void visit (AST::TuplePattern &pattern) override;
259	void visit (AST::GroupedPattern &pattern) override;
260	void visit (AST::SlicePattern &pattern) override;
8628486f	261	void visit (AST::AltPattern &pattern) override;
1841081a AC	262
	263	void visit (AST::EmptyStmt &) override;
	264	void visit (AST::LetStmt &stmt) override;
	265	void visit (AST::ExprStmtWithoutBlock &stmt) override;
	266	void visit (AST::ExprStmtWithBlock &stmt) override;
	267
	268	void visit (AST::TraitBound &bound) override;
	269	void visit (AST::ImplTraitType &type) override;
	270	void visit (AST::TraitObjectType &type) override;
	271	void visit (AST::ParenthesisedType &type) override;
	272	void visit (AST::ImplTraitTypeOneBound &type) override;
	273	void visit (AST::TraitObjectTypeOneBound &type) override;
	274	void visit (AST::TupleType &type) override;
	275	void visit (AST::NeverType &) override;
	276	void visit (AST::RawPointerType &type) override;
	277	void visit (AST::ReferenceType &type) override;
	278	void visit (AST::ArrayType &type) override;
	279	void visit (AST::SliceType &type) override;
	280	void visit (AST::InferredType &) override;
	281	void visit (AST::BareFunctionType &type) override;
	282	};
	283	} // namespace Rust