1//===--- RecursiveASTVisitor.h - Recursive AST Visitor ----------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file defines the RecursiveASTVisitor interface, which recursively 10// traverses the entire AST. 11// 12//===----------------------------------------------------------------------===// 13#ifndef LLVM_CLANG_AST_RECURSIVEASTVISITOR_H 14#define LLVM_CLANG_AST_RECURSIVEASTVISITOR_H 15 16#include "clang/AST/Attr.h" 17#include "clang/AST/Decl.h" 18#include "clang/AST/DeclarationName.h" 19#include "clang/AST/DeclBase.h" 20#include "clang/AST/DeclCXX.h" 21#include "clang/AST/DeclFriend.h" 22#include "clang/AST/DeclObjC.h" 23#include "clang/AST/DeclOpenMP.h" 24#include "clang/AST/DeclTemplate.h" 25#include "clang/AST/Expr.h" 26#include "clang/AST/ExprConcepts.h" 27#include "clang/AST/ExprCXX.h" 28#include "clang/AST/ExprObjC.h" 29#include "clang/AST/ExprOpenMP.h" 30#include "clang/AST/LambdaCapture.h" 31#include "clang/AST/NestedNameSpecifier.h" 32#include "clang/AST/OpenMPClause.h" 33#include "clang/AST/Stmt.h" 34#include "clang/AST/StmtCXX.h" 35#include "clang/AST/StmtObjC.h" 36#include "clang/AST/StmtOpenMP.h" 37#include "clang/AST/TemplateBase.h" 38#include "clang/AST/TemplateName.h" 39#include "clang/AST/Type.h" 40#include "clang/AST/TypeLoc.h" 41#include "clang/Basic/LLVM.h" 42#include "clang/Basic/OpenMPKinds.h" 43#include "clang/Basic/Specifiers.h" 44#include "llvm/ADT/PointerIntPair.h" 45#include "llvm/ADT/SmallVector.h" 46#include "llvm/Support/Casting.h" 47#include <algorithm> 48#include <cstddef> 49#include <type_traits> 50 51// The following three macros are used for meta programming. The code 52// using them is responsible for defining macro OPERATOR(). 53 54// All unary operators. 55#define UNARYOP_LIST() \ 56 OPERATOR(PostInc) OPERATOR(PostDec) OPERATOR(PreInc) OPERATOR(PreDec) \ 57 OPERATOR(AddrOf) OPERATOR(Deref) OPERATOR(Plus) OPERATOR(Minus) \ 58 OPERATOR(Not) OPERATOR(LNot) OPERATOR(Real) OPERATOR(Imag) \ 59 OPERATOR(Extension) OPERATOR(Coawait) 60 61// All binary operators (excluding compound assign operators). 62#define BINOP_LIST() \ 63 OPERATOR(PtrMemD) OPERATOR(PtrMemI) OPERATOR(Mul) OPERATOR(Div) \ 64 OPERATOR(Rem) OPERATOR(Add) OPERATOR(Sub) OPERATOR(Shl) OPERATOR(Shr) \ 65 OPERATOR(LT) OPERATOR(GT) OPERATOR(LE) OPERATOR(GE) OPERATOR(EQ) \ 66 OPERATOR(NE) OPERATOR(Cmp) OPERATOR(And) OPERATOR(Xor) OPERATOR(Or) \ 67 OPERATOR(LAnd) OPERATOR(LOr) OPERATOR(Assign) OPERATOR(Comma) 68 69// All compound assign operators. 70#define CAO_LIST() \ 71 OPERATOR(Mul) OPERATOR(Div) OPERATOR(Rem) OPERATOR(Add) OPERATOR(Sub) \ 72 OPERATOR(Shl) OPERATOR(Shr) OPERATOR(And) OPERATOR(Or) OPERATOR(Xor) 73 74namespace clang { 75 76// A helper macro to implement short-circuiting when recursing. It 77// invokes CALL_EXPR, which must be a method call, on the derived 78// object (s.t. a user of RecursiveASTVisitor can override the method 79// in CALL_EXPR). 80#define TRY_TO(CALL_EXPR) \ 81 do { \ 82 if (!getDerived().CALL_EXPR) \ 83 return false; \ 84 } while (false) 85 86/// A class that does preorder or postorder 87/// depth-first traversal on the entire Clang AST and visits each node. 88/// 89/// This class performs three distinct tasks: 90/// 1. traverse the AST (i.e. go to each node); 91/// 2. at a given node, walk up the class hierarchy, starting from 92/// the node's dynamic type, until the top-most class (e.g. Stmt, 93/// Decl, or Type) is reached. 94/// 3. given a (node, class) combination, where 'class' is some base 95/// class of the dynamic type of 'node', call a user-overridable 96/// function to actually visit the node. 97/// 98/// These tasks are done by three groups of methods, respectively: 99/// 1. TraverseDecl(Decl *x) does task #1. It is the entry point 100/// for traversing an AST rooted at x. This method simply 101/// dispatches (i.e. forwards) to TraverseFoo(Foo *x) where Foo 102/// is the dynamic type of *x, which calls WalkUpFromFoo(x) and 103/// then recursively visits the child nodes of x. 104/// TraverseStmt(Stmt *x) and TraverseType(QualType x) work 105/// similarly. 106/// 2. WalkUpFromFoo(Foo *x) does task #2. It does not try to visit 107/// any child node of x. Instead, it first calls WalkUpFromBar(x) 108/// where Bar is the direct parent class of Foo (unless Foo has 109/// no parent), and then calls VisitFoo(x) (see the next list item). 110/// 3. VisitFoo(Foo *x) does task #3. 111/// 112/// These three method groups are tiered (Traverse* > WalkUpFrom* > 113/// Visit*). A method (e.g. Traverse*) may call methods from the same 114/// tier (e.g. other Traverse*) or one tier lower (e.g. WalkUpFrom*). 115/// It may not call methods from a higher tier. 116/// 117/// Note that since WalkUpFromFoo() calls WalkUpFromBar() (where Bar 118/// is Foo's super class) before calling VisitFoo(), the result is 119/// that the Visit*() methods for a given node are called in the 120/// top-down order (e.g. for a node of type NamespaceDecl, the order will 121/// be VisitDecl(), VisitNamedDecl(), and then VisitNamespaceDecl()). 122/// 123/// This scheme guarantees that all Visit*() calls for the same AST 124/// node are grouped together. In other words, Visit*() methods for 125/// different nodes are never interleaved. 126/// 127/// Clients of this visitor should subclass the visitor (providing 128/// themselves as the template argument, using the curiously recurring 129/// template pattern) and override any of the Traverse*, WalkUpFrom*, 130/// and Visit* methods for declarations, types, statements, 131/// expressions, or other AST nodes where the visitor should customize 132/// behavior. Most users only need to override Visit*. Advanced 133/// users may override Traverse* and WalkUpFrom* to implement custom 134/// traversal strategies. Returning false from one of these overridden 135/// functions will abort the entire traversal. 136/// 137/// By default, this visitor tries to visit every part of the explicit 138/// source code exactly once. The default policy towards templates 139/// is to descend into the 'pattern' class or function body, not any 140/// explicit or implicit instantiations. Explicit specializations 141/// are still visited, and the patterns of partial specializations 142/// are visited separately. This behavior can be changed by 143/// overriding shouldVisitTemplateInstantiations() in the derived class 144/// to return true, in which case all known implicit and explicit 145/// instantiations will be visited at the same time as the pattern 146/// from which they were produced. 147/// 148/// By default, this visitor preorder traverses the AST. If postorder traversal 149/// is needed, the \c shouldTraversePostOrder method needs to be overridden 150/// to return \c true. 151template <typename Derived> class RecursiveASTVisitor { 152public: 153 /// A queue used for performing data recursion over statements. 154 /// Parameters involving this type are used to implement data 155 /// recursion over Stmts and Exprs within this class, and should 156 /// typically not be explicitly specified by derived classes. 157 /// The bool bit indicates whether the statement has been traversed or not. 158 typedef SmallVectorImpl<llvm::PointerIntPair<Stmt *, 1, bool>> 159 DataRecursionQueue; 160 161 /// Return a reference to the derived class. 162 Derived &getDerived() { return *static_cast<Derived *>(this); } 163 164 /// Return whether this visitor should recurse into 165 /// template instantiations. 166 bool shouldVisitTemplateInstantiations() const { return false; } 167 168 /// Return whether this visitor should recurse into the types of 169 /// TypeLocs. 170 bool shouldWalkTypesOfTypeLocs() const { return true; } 171 172 /// Return whether this visitor should recurse into implicit 173 /// code, e.g., implicit constructors and destructors. 174 bool shouldVisitImplicitCode() const { return false; } 175 176 /// Return whether this visitor should traverse post-order. 177 bool shouldTraversePostOrder() const { return false; } 178 179 /// Recursively visits an entire AST, starting from the top-level Decls 180 /// in the AST traversal scope (by default, the TranslationUnitDecl). 181 /// \returns false if visitation was terminated early. 182 bool TraverseAST(ASTContext &AST) { 183 for (Decl *D : AST.getTraversalScope()) 184 if (!getDerived().TraverseDecl(D)) 185 return false; 186 return true; 187 } 188 189 /// Recursively visit a statement or expression, by 190 /// dispatching to Traverse*() based on the argument's dynamic type. 191 /// 192 /// \returns false if the visitation was terminated early, true 193 /// otherwise (including when the argument is nullptr). 194 bool TraverseStmt(Stmt *S, DataRecursionQueue *Queue = nullptr); 195 196 /// Invoked before visiting a statement or expression via data recursion. 197 /// 198 /// \returns false to skip visiting the node, true otherwise. 199 bool dataTraverseStmtPre(Stmt *S) { return true; } 200 201 /// Invoked after visiting a statement or expression via data recursion. 202 /// This is not invoked if the previously invoked \c dataTraverseStmtPre 203 /// returned false. 204 /// 205 /// \returns false if the visitation was terminated early, true otherwise. 206 bool dataTraverseStmtPost(Stmt *S) { return true; } 207 208 /// Recursively visit a type, by dispatching to 209 /// Traverse*Type() based on the argument's getTypeClass() property. 210 /// 211 /// \returns false if the visitation was terminated early, true 212 /// otherwise (including when the argument is a Null type). 213 bool TraverseType(QualType T); 214 215 /// Recursively visit a type with location, by dispatching to 216 /// Traverse*TypeLoc() based on the argument type's getTypeClass() property. 217 /// 218 /// \returns false if the visitation was terminated early, true 219 /// otherwise (including when the argument is a Null type location). 220 bool TraverseTypeLoc(TypeLoc TL); 221 222 /// Recursively visit an attribute, by dispatching to 223 /// Traverse*Attr() based on the argument's dynamic type. 224 /// 225 /// \returns false if the visitation was terminated early, true 226 /// otherwise (including when the argument is a Null type location). 227 bool TraverseAttr(Attr *At); 228 229 /// Recursively visit a declaration, by dispatching to 230 /// Traverse*Decl() based on the argument's dynamic type. 231 /// 232 /// \returns false if the visitation was terminated early, true 233 /// otherwise (including when the argument is NULL). 234 bool TraverseDecl(Decl *D); 235 236 /// Recursively visit a C++ nested-name-specifier. 237 /// 238 /// \returns false if the visitation was terminated early, true otherwise. 239 bool TraverseNestedNameSpecifier(NestedNameSpecifier *NNS); 240 241 /// Recursively visit a C++ nested-name-specifier with location 242 /// information. 243 /// 244 /// \returns false if the visitation was terminated early, true otherwise. 245 bool TraverseNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS); 246 247 /// Recursively visit a name with its location information. 248 /// 249 /// \returns false if the visitation was terminated early, true otherwise. 250 bool TraverseDeclarationNameInfo(DeclarationNameInfo NameInfo); 251 252 /// Recursively visit a template name and dispatch to the 253 /// appropriate method. 254 /// 255 /// \returns false if the visitation was terminated early, true otherwise. 256 bool TraverseTemplateName(TemplateName Template); 257 258 /// Recursively visit a template argument and dispatch to the 259 /// appropriate method for the argument type. 260 /// 261 /// \returns false if the visitation was terminated early, true otherwise. 262 // FIXME: migrate callers to TemplateArgumentLoc instead. 263 bool TraverseTemplateArgument(const TemplateArgument &Arg); 264 265 /// Recursively visit a template argument location and dispatch to the 266 /// appropriate method for the argument type. 267 /// 268 /// \returns false if the visitation was terminated early, true otherwise. 269 bool TraverseTemplateArgumentLoc(const TemplateArgumentLoc &ArgLoc); 270 271 /// Recursively visit a set of template arguments. 272 /// This can be overridden by a subclass, but it's not expected that 273 /// will be needed -- this visitor always dispatches to another. 274 /// 275 /// \returns false if the visitation was terminated early, true otherwise. 276 // FIXME: take a TemplateArgumentLoc* (or TemplateArgumentListInfo) instead. 277 bool TraverseTemplateArguments(const TemplateArgument *Args, 278 unsigned NumArgs); 279 280 /// Recursively visit a base specifier. This can be overridden by a 281 /// subclass. 282 /// 283 /// \returns false if the visitation was terminated early, true otherwise. 284 bool TraverseCXXBaseSpecifier(const CXXBaseSpecifier &Base); 285 286 /// Recursively visit a constructor initializer. This 287 /// automatically dispatches to another visitor for the initializer 288 /// expression, but not for the name of the initializer, so may 289 /// be overridden for clients that need access to the name. 290 /// 291 /// \returns false if the visitation was terminated early, true otherwise. 292 bool TraverseConstructorInitializer(CXXCtorInitializer *Init); 293 294 /// Recursively visit a lambda capture. \c Init is the expression that 295 /// will be used to initialize the capture. 296 /// 297 /// \returns false if the visitation was terminated early, true otherwise. 298 bool TraverseLambdaCapture(LambdaExpr *LE, const LambdaCapture *C, 299 Expr *Init); 300 301 /// Recursively visit the syntactic or semantic form of an 302 /// initialization list. 303 /// 304 /// \returns false if the visitation was terminated early, true otherwise. 305 bool TraverseSynOrSemInitListExpr(InitListExpr *S, 306 DataRecursionQueue *Queue = nullptr); 307 308 /// Recursively visit a reference to a concept with potential arguments. 309 /// 310 /// \returns false if the visitation was terminated early, true otherwise. 311 bool TraverseConceptReference(const ConceptReference &C); 312 313 // ---- Methods on Attrs ---- 314 315 // Visit an attribute. 316 bool VisitAttr(Attr *A) { return true; } 317 318// Declare Traverse* and empty Visit* for all Attr classes. 319#define ATTR_VISITOR_DECLS_ONLY 320#include "clang/AST/AttrVisitor.inc" 321#undef ATTR_VISITOR_DECLS_ONLY 322 323// ---- Methods on Stmts ---- 324 325 Stmt::child_range getStmtChildren(Stmt *S) { return S->children(); } 326 327private: 328 template<typename T, typename U> 329 struct has_same_member_pointer_type : std::false_type {}; 330 template<typename T, typename U, typename R, typename... P> 331 struct has_same_member_pointer_type<R (T::*)(P...), R (U::*)(P...)> 332 : std::true_type {}; 333 334 // Traverse the given statement. If the most-derived traverse function takes a 335 // data recursion queue, pass it on; otherwise, discard it. Note that the 336 // first branch of this conditional must compile whether or not the derived 337 // class can take a queue, so if we're taking the second arm, make the first 338 // arm call our function rather than the derived class version. 339#define TRAVERSE_STMT_BASE(NAME, CLASS, VAR, QUEUE) \ 340 (has_same_member_pointer_type<decltype( \ 341 &RecursiveASTVisitor::Traverse##NAME), \ 342 decltype(&Derived::Traverse##NAME)>::value \ 343 ? static_cast<typename std::conditional< \ 344 has_same_member_pointer_type< \ 345 decltype(&RecursiveASTVisitor::Traverse##NAME), \ 346 decltype(&Derived::Traverse##NAME)>::value, \ 347 Derived &, RecursiveASTVisitor &>::type>(*this) \ 348 .Traverse##NAME(static_cast<CLASS *>(VAR), QUEUE) \ 349 : getDerived().Traverse##NAME(static_cast<CLASS *>(VAR))) 350 351// Try to traverse the given statement, or enqueue it if we're performing data 352// recursion in the middle of traversing another statement. Can only be called 353// from within a DEF_TRAVERSE_STMT body or similar context. 354#define TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S) \ 355 do { \ 356 if (!TRAVERSE_STMT_BASE(Stmt, Stmt, S, Queue)) \ 357 return false; \ 358 } while (false) 359 360public: 361// Declare Traverse*() for all concrete Stmt classes. 362#define ABSTRACT_STMT(STMT) 363#define STMT(CLASS, PARENT) \ 364 bool Traverse##CLASS(CLASS *S, DataRecursionQueue *Queue = nullptr); 365#include "clang/AST/StmtNodes.inc" 366 // The above header #undefs ABSTRACT_STMT and STMT upon exit. 367 368 // Define WalkUpFrom*() and empty Visit*() for all Stmt classes. 369 bool WalkUpFromStmt(Stmt *S) { return getDerived().VisitStmt(S); } 370 bool VisitStmt(Stmt *S) { return true; } 371#define STMT(CLASS, PARENT) \ 372 bool WalkUpFrom##CLASS(CLASS *S) { \ 373 TRY_TO(WalkUpFrom##PARENT(S)); \ 374 TRY_TO(Visit##CLASS(S)); \ 375 return true; \ 376 } \ 377 bool Visit##CLASS(CLASS *S) { return true; } 378#include "clang/AST/StmtNodes.inc" 379 380// Define Traverse*(), WalkUpFrom*(), and Visit*() for unary 381// operator methods. Unary operators are not classes in themselves 382// (they're all opcodes in UnaryOperator) but do have visitors. 383#define OPERATOR(NAME) \ 384 bool TraverseUnary##NAME(UnaryOperator *S, \ 385 DataRecursionQueue *Queue = nullptr) { \ 386 if (!getDerived().shouldTraversePostOrder()) \ 387 TRY_TO(WalkUpFromUnary##NAME(S)); \ 388 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getSubExpr()); \ 389 return true; \ 390 } \ 391 bool WalkUpFromUnary##NAME(UnaryOperator *S) { \ 392 TRY_TO(WalkUpFromUnaryOperator(S)); \ 393 TRY_TO(VisitUnary##NAME(S)); \ 394 return true; \ 395 } \ 396 bool VisitUnary##NAME(UnaryOperator *S) { return true; } 397 398 UNARYOP_LIST() 399#undef OPERATOR 400 401// Define Traverse*(), WalkUpFrom*(), and Visit*() for binary 402// operator methods. Binary operators are not classes in themselves 403// (they're all opcodes in BinaryOperator) but do have visitors. 404#define GENERAL_BINOP_FALLBACK(NAME, BINOP_TYPE) \ 405 bool TraverseBin##NAME(BINOP_TYPE *S, DataRecursionQueue *Queue = nullptr) { \ 406 if (!getDerived().shouldTraversePostOrder()) \ 407 TRY_TO(WalkUpFromBin##NAME(S)); \ 408 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getLHS()); \ 409 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getRHS()); \ 410 return true; \ 411 } \ 412 bool WalkUpFromBin##NAME(BINOP_TYPE *S) { \ 413 TRY_TO(WalkUpFrom##BINOP_TYPE(S)); \ 414 TRY_TO(VisitBin##NAME(S)); \ 415 return true; \ 416 } \ 417 bool VisitBin##NAME(BINOP_TYPE *S) { return true; } 418 419#define OPERATOR(NAME) GENERAL_BINOP_FALLBACK(NAME, BinaryOperator) 420 BINOP_LIST() 421#undef OPERATOR 422 423// Define Traverse*(), WalkUpFrom*(), and Visit*() for compound 424// assignment methods. Compound assignment operators are not 425// classes in themselves (they're all opcodes in 426// CompoundAssignOperator) but do have visitors. 427#define OPERATOR(NAME) \ 428 GENERAL_BINOP_FALLBACK(NAME##Assign, CompoundAssignOperator) 429 430 CAO_LIST() 431#undef OPERATOR 432#undef GENERAL_BINOP_FALLBACK 433 434// ---- Methods on Types ---- 435// FIXME: revamp to take TypeLoc's rather than Types. 436 437// Declare Traverse*() for all concrete Type classes. 438#define ABSTRACT_TYPE(CLASS, BASE) 439#define TYPE(CLASS, BASE) bool Traverse##CLASS##Type(CLASS##Type *T); 440#include "clang/AST/TypeNodes.inc" 441 // The above header #undefs ABSTRACT_TYPE and TYPE upon exit. 442 443 // Define WalkUpFrom*() and empty Visit*() for all Type classes. 444 bool WalkUpFromType(Type *T) { return getDerived().VisitType(T); } 445 bool VisitType(Type *T) { return true; } 446#define TYPE(CLASS, BASE) \ 447 bool WalkUpFrom##CLASS##Type(CLASS##Type *T) { \ 448 TRY_TO(WalkUpFrom##BASE(T)); \ 449 TRY_TO(Visit##CLASS##Type(T)); \ 450 return true; \ 451 } \ 452 bool Visit##CLASS##Type(CLASS##Type *T) { return true; } 453#include "clang/AST/TypeNodes.inc" 454 455// ---- Methods on TypeLocs ---- 456// FIXME: this currently just calls the matching Type methods 457 458// Declare Traverse*() for all concrete TypeLoc classes. 459#define ABSTRACT_TYPELOC(CLASS, BASE) 460#define TYPELOC(CLASS, BASE) bool Traverse##CLASS##TypeLoc(CLASS##TypeLoc TL); 461#include "clang/AST/TypeLocNodes.def" 462 // The above header #undefs ABSTRACT_TYPELOC and TYPELOC upon exit. 463 464 // Define WalkUpFrom*() and empty Visit*() for all TypeLoc classes. 465 bool WalkUpFromTypeLoc(TypeLoc TL) { return getDerived().VisitTypeLoc(TL); } 466 bool VisitTypeLoc(TypeLoc TL) { return true; } 467 468 // QualifiedTypeLoc and UnqualTypeLoc are not declared in 469 // TypeNodes.inc and thus need to be handled specially. 470 bool WalkUpFromQualifiedTypeLoc(QualifiedTypeLoc TL) { 471 return getDerived().VisitUnqualTypeLoc(TL.getUnqualifiedLoc()); 472 } 473 bool VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { return true; } 474 bool WalkUpFromUnqualTypeLoc(UnqualTypeLoc TL) { 475 return getDerived().VisitUnqualTypeLoc(TL.getUnqualifiedLoc()); 476 } 477 bool VisitUnqualTypeLoc(UnqualTypeLoc TL) { return true; } 478 479// Note that BASE includes trailing 'Type' which CLASS doesn't. 480#define TYPE(CLASS, BASE) \ 481 bool WalkUpFrom##CLASS##TypeLoc(CLASS##TypeLoc TL) { \ 482 TRY_TO(WalkUpFrom##BASE##Loc(TL)); \ 483 TRY_TO(Visit##CLASS##TypeLoc(TL)); \ 484 return true; \ 485 } \ 486 bool Visit##CLASS##TypeLoc(CLASS##TypeLoc TL) { return true; } 487#include "clang/AST/TypeNodes.inc" 488 489// ---- Methods on Decls ---- 490 491// Declare Traverse*() for all concrete Decl classes. 492#define ABSTRACT_DECL(DECL) 493#define DECL(CLASS, BASE) bool Traverse##CLASS##Decl(CLASS##Decl *D); 494#include "clang/AST/DeclNodes.inc" 495 // The above header #undefs ABSTRACT_DECL and DECL upon exit. 496 497 // Define WalkUpFrom*() and empty Visit*() for all Decl classes. 498 bool WalkUpFromDecl(Decl *D) { return getDerived().VisitDecl(D); } 499 bool VisitDecl(Decl *D) { return true; } 500#define DECL(CLASS, BASE) \ 501 bool WalkUpFrom##CLASS##Decl(CLASS##Decl *D) { \ 502 TRY_TO(WalkUpFrom##BASE(D)); \ 503 TRY_TO(Visit##CLASS##Decl(D)); \ 504 return true; \ 505 } \ 506 bool Visit##CLASS##Decl(CLASS##Decl *D) { return true; } 507#include "clang/AST/DeclNodes.inc" 508 509 bool canIgnoreChildDeclWhileTraversingDeclContext(const Decl *Child); 510 511private: 512 // These are helper methods used by more than one Traverse* method. 513 bool TraverseTemplateParameterListHelper(TemplateParameterList *TPL); 514 515 // Traverses template parameter lists of either a DeclaratorDecl or TagDecl. 516 template <typename T> 517 bool TraverseDeclTemplateParameterLists(T *D); 518 519#define DEF_TRAVERSE_TMPL_INST(TMPLDECLKIND) \ 520 bool TraverseTemplateInstantiations(TMPLDECLKIND##TemplateDecl *D); 521 DEF_TRAVERSE_TMPL_INST(Class) 522 DEF_TRAVERSE_TMPL_INST(Var) 523 DEF_TRAVERSE_TMPL_INST(Function) 524#undef DEF_TRAVERSE_TMPL_INST 525 bool TraverseTemplateArgumentLocsHelper(const TemplateArgumentLoc *TAL, 526 unsigned Count); 527 bool TraverseArrayTypeLocHelper(ArrayTypeLoc TL); 528 bool TraverseRecordHelper(RecordDecl *D); 529 bool TraverseCXXRecordHelper(CXXRecordDecl *D); 530 bool TraverseDeclaratorHelper(DeclaratorDecl *D); 531 bool TraverseDeclContextHelper(DeclContext *DC); 532 bool TraverseFunctionHelper(FunctionDecl *D); 533 bool TraverseVarHelper(VarDecl *D); 534 bool TraverseOMPExecutableDirective(OMPExecutableDirective *S); 535 bool TraverseOMPLoopDirective(OMPLoopDirective *S); 536 bool TraverseOMPClause(OMPClause *C); 537#define OPENMP_CLAUSE(Name, Class) bool Visit##Class(Class *C); 538#include "clang/Basic/OpenMPKinds.def" 539 /// Process clauses with list of variables. 540 template <typename T> bool VisitOMPClauseList(T *Node); 541 /// Process clauses with pre-initis. 542 bool VisitOMPClauseWithPreInit(OMPClauseWithPreInit *Node); 543 bool VisitOMPClauseWithPostUpdate(OMPClauseWithPostUpdate *Node); 544 545 bool dataTraverseNode(Stmt *S, DataRecursionQueue *Queue); 546 bool PostVisitStmt(Stmt *S); 547}; 548 549template <typename Derived> 550bool RecursiveASTVisitor<Derived>::dataTraverseNode(Stmt *S, 551 DataRecursionQueue *Queue) { 552#define DISPATCH_STMT(NAME, CLASS, VAR) \ 553 return TRAVERSE_STMT_BASE(NAME, CLASS, VAR, Queue); 554 555 // If we have a binary expr, dispatch to the subcode of the binop. A smart 556 // optimizer (e.g. LLVM) will fold this comparison into the switch stmt 557 // below. 558 if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(S)) { 559 switch (BinOp->getOpcode()) { 560#define OPERATOR(NAME) \ 561 case BO_##NAME: \ 562 DISPATCH_STMT(Bin##NAME, BinaryOperator, S); 563 564 BINOP_LIST() 565#undef OPERATOR 566#undef BINOP_LIST 567 568#define OPERATOR(NAME) \ 569 case BO_##NAME##Assign: \ 570 DISPATCH_STMT(Bin##NAME##Assign, CompoundAssignOperator, S); 571 572 CAO_LIST() 573#undef OPERATOR 574#undef CAO_LIST 575 } 576 } else if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(S)) { 577 switch (UnOp->getOpcode()) { 578#define OPERATOR(NAME) \ 579 case UO_##NAME: \ 580 DISPATCH_STMT(Unary##NAME, UnaryOperator, S); 581 582 UNARYOP_LIST() 583#undef OPERATOR 584#undef UNARYOP_LIST 585 } 586 } 587 588 // Top switch stmt: dispatch to TraverseFooStmt for each concrete FooStmt. 589 switch (S->getStmtClass()) { 590 case Stmt::NoStmtClass: 591 break; 592#define ABSTRACT_STMT(STMT) 593#define STMT(CLASS, PARENT) \ 594 case Stmt::CLASS##Class: \ 595 DISPATCH_STMT(CLASS, CLASS, S); 596#include "clang/AST/StmtNodes.inc" 597 } 598 599 return true; 600} 601 602#undef DISPATCH_STMT 603 604template <typename Derived> 605bool RecursiveASTVisitor<Derived>::PostVisitStmt(Stmt *S) { 606 switch (S->getStmtClass()) { 607 case Stmt::NoStmtClass: 608 break; 609#define ABSTRACT_STMT(STMT) 610#define STMT(CLASS, PARENT) \ 611 case Stmt::CLASS##Class: \ 612 TRY_TO(WalkUpFrom##CLASS(static_cast<CLASS *>(S))); break; 613#define INITLISTEXPR(CLASS, PARENT) \ 614 case Stmt::CLASS##Class: \ 615 { \ 616 auto ILE = static_cast<CLASS *>(S); \ 617 if (auto Syn = ILE->isSemanticForm() ? ILE->getSyntacticForm() : ILE) \ 618 TRY_TO(WalkUpFrom##CLASS(Syn)); \ 619 if (auto Sem = ILE->isSemanticForm() ? ILE : ILE->getSemanticForm()) \ 620 TRY_TO(WalkUpFrom##CLASS(Sem)); \ 621 break; \ 622 } 623#include "clang/AST/StmtNodes.inc" 624 } 625 626 return true; 627} 628 629#undef DISPATCH_STMT 630 631template <typename Derived> 632bool RecursiveASTVisitor<Derived>::TraverseStmt(Stmt *S, 633 DataRecursionQueue *Queue) { 634 if (!S) 635 return true; 636 637 if (Queue) { 638 Queue->push_back({S, false}); 639 return true; 640 } 641 642 SmallVector<llvm::PointerIntPair<Stmt *, 1, bool>, 8> LocalQueue; 643 LocalQueue.push_back({S, false}); 644 645 while (!LocalQueue.empty()) { 646 auto &CurrSAndVisited = LocalQueue.back(); 647 Stmt *CurrS = CurrSAndVisited.getPointer(); 648 bool Visited = CurrSAndVisited.getInt(); 649 if (Visited) { 650 LocalQueue.pop_back(); 651 TRY_TO(dataTraverseStmtPost(CurrS)); 652 if (getDerived().shouldTraversePostOrder()) { 653 TRY_TO(PostVisitStmt(CurrS)); 654 } 655 continue; 656 } 657 658 if (getDerived().dataTraverseStmtPre(CurrS)) { 659 CurrSAndVisited.setInt(true); 660 size_t N = LocalQueue.size(); 661 TRY_TO(dataTraverseNode(CurrS, &LocalQueue)); 662 // Process new children in the order they were added. 663 std::reverse(LocalQueue.begin() + N, LocalQueue.end()); 664 } else { 665 LocalQueue.pop_back(); 666 } 667 } 668 669 return true; 670} 671 672#define DISPATCH(NAME, CLASS, VAR) \ 673 return getDerived().Traverse##NAME(static_cast<CLASS *>(VAR)) 674 675template <typename Derived> 676bool RecursiveASTVisitor<Derived>::TraverseType(QualType T) { 677 if (T.isNull()) 678 return true; 679 680 switch (T->getTypeClass()) { 681#define ABSTRACT_TYPE(CLASS, BASE) 682#define TYPE(CLASS, BASE) \ 683 case Type::CLASS: \ 684 DISPATCH(CLASS##Type, CLASS##Type, const_cast<Type *>(T.getTypePtr())); 685#include "clang/AST/TypeNodes.inc" 686 } 687 688 return true; 689} 690 691template <typename Derived> 692bool RecursiveASTVisitor<Derived>::TraverseTypeLoc(TypeLoc TL) { 693 if (TL.isNull()) 694 return true; 695 696 switch (TL.getTypeLocClass()) { 697#define ABSTRACT_TYPELOC(CLASS, BASE) 698#define TYPELOC(CLASS, BASE) \ 699 case TypeLoc::CLASS: \ 700 return getDerived().Traverse##CLASS##TypeLoc(TL.castAs<CLASS##TypeLoc>()); 701#include "clang/AST/TypeLocNodes.def" 702 } 703 704 return true; 705} 706 707// Define the Traverse*Attr(Attr* A) methods 708#define VISITORCLASS RecursiveASTVisitor 709#include "clang/AST/AttrVisitor.inc" 710#undef VISITORCLASS 711 712template <typename Derived> 713bool RecursiveASTVisitor<Derived>::TraverseDecl(Decl *D) { 714 if (!D) 715 return true; 716 717 // As a syntax visitor, by default we want to ignore declarations for 718 // implicit declarations (ones not typed explicitly by the user). 719 if (!getDerived().shouldVisitImplicitCode() && D->isImplicit()) 720 return true; 721 722 switch (D->getKind()) { 723#define ABSTRACT_DECL(DECL) 724#define DECL(CLASS, BASE) \ 725 case Decl::CLASS: \ 726 if (!getDerived().Traverse##CLASS##Decl(static_cast<CLASS##Decl *>(D))) \ 727 return false; \ 728 break; 729#include "clang/AST/DeclNodes.inc" 730 } 731 return true; 732} 733 734#undef DISPATCH 735 736template <typename Derived> 737bool RecursiveASTVisitor<Derived>::TraverseNestedNameSpecifier( 738 NestedNameSpecifier *NNS) { 739 if (!NNS) 740 return true; 741 742 if (NNS->getPrefix()) 743 TRY_TO(TraverseNestedNameSpecifier(NNS->getPrefix())); 744 745 switch (NNS->getKind()) { 746 case NestedNameSpecifier::Identifier: 747 case NestedNameSpecifier::Namespace: 748 case NestedNameSpecifier::NamespaceAlias: 749 case NestedNameSpecifier::Global: 750 case NestedNameSpecifier::Super: 751 return true; 752 753 case NestedNameSpecifier::TypeSpec: 754 case NestedNameSpecifier::TypeSpecWithTemplate: 755 TRY_TO(TraverseType(QualType(NNS->getAsType(), 0))); 756 } 757 758 return true; 759} 760 761template <typename Derived> 762bool RecursiveASTVisitor<Derived>::TraverseNestedNameSpecifierLoc( 763 NestedNameSpecifierLoc NNS) { 764 if (!NNS) 765 return true; 766 767 if (NestedNameSpecifierLoc Prefix = NNS.getPrefix()) 768 TRY_TO(TraverseNestedNameSpecifierLoc(Prefix)); 769 770 switch (NNS.getNestedNameSpecifier()->getKind()) { 771 case NestedNameSpecifier::Identifier: 772 case NestedNameSpecifier::Namespace: 773 case NestedNameSpecifier::NamespaceAlias: 774 case NestedNameSpecifier::Global: 775 case NestedNameSpecifier::Super: 776 return true; 777 778 case NestedNameSpecifier::TypeSpec: 779 case NestedNameSpecifier::TypeSpecWithTemplate: 780 TRY_TO(TraverseTypeLoc(NNS.getTypeLoc())); 781 break; 782 } 783 784 return true; 785} 786 787template <typename Derived> 788bool RecursiveASTVisitor<Derived>::TraverseDeclarationNameInfo( 789 DeclarationNameInfo NameInfo) { 790 switch (NameInfo.getName().getNameKind()) { 791 case DeclarationName::CXXConstructorName: 792 case DeclarationName::CXXDestructorName: 793 case DeclarationName::CXXConversionFunctionName: 794 if (TypeSourceInfo *TSInfo = NameInfo.getNamedTypeInfo()) 795 TRY_TO(TraverseTypeLoc(TSInfo->getTypeLoc())); 796 break; 797 798 case DeclarationName::CXXDeductionGuideName: 799 TRY_TO(TraverseTemplateName( 800 TemplateName(NameInfo.getName().getCXXDeductionGuideTemplate()))); 801 break; 802 803 case DeclarationName::Identifier: 804 case DeclarationName::ObjCZeroArgSelector: 805 case DeclarationName::ObjCOneArgSelector: 806 case DeclarationName::ObjCMultiArgSelector: 807 case DeclarationName::CXXOperatorName: 808 case DeclarationName::CXXLiteralOperatorName: 809 case DeclarationName::CXXUsingDirective: 810 break; 811 } 812 813 return true; 814} 815 816template <typename Derived> 817bool RecursiveASTVisitor<Derived>::TraverseTemplateName(TemplateName Template) { 818 if (DependentTemplateName *DTN = Template.getAsDependentTemplateName()) 819 TRY_TO(TraverseNestedNameSpecifier(DTN->getQualifier())); 820 else if (QualifiedTemplateName *QTN = Template.getAsQualifiedTemplateName()) 821 TRY_TO(TraverseNestedNameSpecifier(QTN->getQualifier())); 822 823 return true; 824} 825 826template <typename Derived> 827bool RecursiveASTVisitor<Derived>::TraverseTemplateArgument( 828 const TemplateArgument &Arg) { 829 switch (Arg.getKind()) { 830 case TemplateArgument::Null: 831 case TemplateArgument::Declaration: 832 case TemplateArgument::Integral: 833 case TemplateArgument::NullPtr: 834 return true; 835 836 case TemplateArgument::Type: 837 return getDerived().TraverseType(Arg.getAsType()); 838 839 case TemplateArgument::Template: 840 case TemplateArgument::TemplateExpansion: 841 return getDerived().TraverseTemplateName( 842 Arg.getAsTemplateOrTemplatePattern()); 843 844 case TemplateArgument::Expression: 845 return getDerived().TraverseStmt(Arg.getAsExpr()); 846 847 case TemplateArgument::Pack: 848 return getDerived().TraverseTemplateArguments(Arg.pack_begin(), 849 Arg.pack_size()); 850 } 851 852 return true; 853} 854 855// FIXME: no template name location? 856// FIXME: no source locations for a template argument pack? 857template <typename Derived> 858bool RecursiveASTVisitor<Derived>::TraverseTemplateArgumentLoc( 859 const TemplateArgumentLoc &ArgLoc) { 860 const TemplateArgument &Arg = ArgLoc.getArgument(); 861 862 switch (Arg.getKind()) { 863 case TemplateArgument::Null: 864 case TemplateArgument::Declaration: 865 case TemplateArgument::Integral: 866 case TemplateArgument::NullPtr: 867 return true; 868 869 case TemplateArgument::Type: { 870 // FIXME: how can TSI ever be NULL? 871 if (TypeSourceInfo *TSI = ArgLoc.getTypeSourceInfo()) 872 return getDerived().TraverseTypeLoc(TSI->getTypeLoc()); 873 else 874 return getDerived().TraverseType(Arg.getAsType()); 875 } 876 877 case TemplateArgument::Template: 878 case TemplateArgument::TemplateExpansion: 879 if (ArgLoc.getTemplateQualifierLoc()) 880 TRY_TO(getDerived().TraverseNestedNameSpecifierLoc( 881 ArgLoc.getTemplateQualifierLoc())); 882 return getDerived().TraverseTemplateName( 883 Arg.getAsTemplateOrTemplatePattern()); 884 885 case TemplateArgument::Expression: 886 return getDerived().TraverseStmt(ArgLoc.getSourceExpression()); 887 888 case TemplateArgument::Pack: 889 return getDerived().TraverseTemplateArguments(Arg.pack_begin(), 890 Arg.pack_size()); 891 } 892 893 return true; 894} 895 896template <typename Derived> 897bool RecursiveASTVisitor<Derived>::TraverseTemplateArguments( 898 const TemplateArgument *Args, unsigned NumArgs) { 899 for (unsigned I = 0; I != NumArgs; ++I) { 900 TRY_TO(TraverseTemplateArgument(Args[I])); 901 } 902 903 return true; 904} 905 906template <typename Derived> 907bool RecursiveASTVisitor<Derived>::TraverseConstructorInitializer( 908 CXXCtorInitializer *Init) { 909 if (TypeSourceInfo *TInfo = Init->getTypeSourceInfo()) 910 TRY_TO(TraverseTypeLoc(TInfo->getTypeLoc())); 911 912 if (Init->isWritten() || getDerived().shouldVisitImplicitCode()) 913 TRY_TO(TraverseStmt(Init->getInit())); 914 915 return true; 916} 917 918template <typename Derived> 919bool 920RecursiveASTVisitor<Derived>::TraverseLambdaCapture(LambdaExpr *LE, 921 const LambdaCapture *C, 922 Expr *Init) { 923 if (LE->isInitCapture(C)) 924 TRY_TO(TraverseDecl(C->getCapturedVar())); 925 else 926 TRY_TO(TraverseStmt(Init)); 927 return true; 928} 929 930// ----------------- Type traversal ----------------- 931 932// This macro makes available a variable T, the passed-in type. 933#define DEF_TRAVERSE_TYPE(TYPE, CODE) \ 934 template <typename Derived> \ 935 bool RecursiveASTVisitor<Derived>::Traverse##TYPE(TYPE *T) { \ 936 if (!getDerived().shouldTraversePostOrder()) \ 937 TRY_TO(WalkUpFrom##TYPE(T)); \ 938 { CODE; } \ 939 if (getDerived().shouldTraversePostOrder()) \ 940 TRY_TO(WalkUpFrom##TYPE(T)); \ 941 return true; \ 942 } 943 944DEF_TRAVERSE_TYPE(BuiltinType, {}) 945 946DEF_TRAVERSE_TYPE(ComplexType, { TRY_TO(TraverseType(T->getElementType())); }) 947 948DEF_TRAVERSE_TYPE(PointerType, { TRY_TO(TraverseType(T->getPointeeType())); }) 949 950DEF_TRAVERSE_TYPE(BlockPointerType, 951 { TRY_TO(TraverseType(T->getPointeeType())); }) 952 953DEF_TRAVERSE_TYPE(LValueReferenceType, 954 { TRY_TO(TraverseType(T->getPointeeType())); }) 955 956DEF_TRAVERSE_TYPE(RValueReferenceType, 957 { TRY_TO(TraverseType(T->getPointeeType())); }) 958 959DEF_TRAVERSE_TYPE(MemberPointerType, { 960 TRY_TO(TraverseType(QualType(T->getClass(), 0))); 961 TRY_TO(TraverseType(T->getPointeeType())); 962}) 963 964DEF_TRAVERSE_TYPE(AdjustedType, { TRY_TO(TraverseType(T->getOriginalType())); }) 965 966DEF_TRAVERSE_TYPE(DecayedType, { TRY_TO(TraverseType(T->getOriginalType())); }) 967 968DEF_TRAVERSE_TYPE(ConstantArrayType, { 969 TRY_TO(TraverseType(T->getElementType())); 970 if (T->getSizeExpr()) 971 TRY_TO(TraverseStmt(const_cast<Expr*>(T->getSizeExpr()))); 972}) 973 974DEF_TRAVERSE_TYPE(IncompleteArrayType, 975 { TRY_TO(TraverseType(T->getElementType())); }) 976 977DEF_TRAVERSE_TYPE(VariableArrayType, { 978 TRY_TO(TraverseType(T->getElementType())); 979 TRY_TO(TraverseStmt(T->getSizeExpr())); 980}) 981 982DEF_TRAVERSE_TYPE(DependentSizedArrayType, { 983 TRY_TO(TraverseType(T->getElementType())); 984 if (T->getSizeExpr()) 985 TRY_TO(TraverseStmt(T->getSizeExpr())); 986}) 987 988DEF_TRAVERSE_TYPE(DependentAddressSpaceType, { 989 TRY_TO(TraverseStmt(T->getAddrSpaceExpr())); 990 TRY_TO(TraverseType(T->getPointeeType())); 991}) 992 993DEF_TRAVERSE_TYPE(DependentVectorType, { 994 if (T->getSizeExpr()) 995 TRY_TO(TraverseStmt(T->getSizeExpr())); 996 TRY_TO(TraverseType(T->getElementType())); 997}) 998 999DEF_TRAVERSE_TYPE(DependentSizedExtVectorType, { 1000 if (T->getSizeExpr()) 1001 TRY_TO(TraverseStmt(T->getSizeExpr())); 1002 TRY_TO(TraverseType(T->getElementType())); 1003}) 1004 1005DEF_TRAVERSE_TYPE(VectorType, { TRY_TO(TraverseType(T->getElementType())); }) 1006 1007DEF_TRAVERSE_TYPE(ExtVectorType, { TRY_TO(TraverseType(T->getElementType())); }) 1008 1009DEF_TRAVERSE_TYPE(FunctionNoProtoType, 1010 { TRY_TO(TraverseType(T->getReturnType())); }) 1011 1012DEF_TRAVERSE_TYPE(FunctionProtoType, { 1013 TRY_TO(TraverseType(T->getReturnType())); 1014 1015 for (const auto &A : T->param_types()) { 1016 TRY_TO(TraverseType(A)); 1017 } 1018 1019 for (const auto &E : T->exceptions()) { 1020 TRY_TO(TraverseType(E)); 1021 } 1022 1023 if (Expr *NE = T->getNoexceptExpr()) 1024 TRY_TO(TraverseStmt(NE)); 1025}) 1026 1027DEF_TRAVERSE_TYPE(UnresolvedUsingType, {}) 1028DEF_TRAVERSE_TYPE(TypedefType, {}) 1029 1030DEF_TRAVERSE_TYPE(TypeOfExprType, 1031 { TRY_TO(TraverseStmt(T->getUnderlyingExpr())); }) 1032 1033DEF_TRAVERSE_TYPE(TypeOfType, { TRY_TO(TraverseType(T->getUnderlyingType())); }) 1034 1035DEF_TRAVERSE_TYPE(DecltypeType, 1036 { TRY_TO(TraverseStmt(T->getUnderlyingExpr())); }) 1037 1038DEF_TRAVERSE_TYPE(UnaryTransformType, { 1039 TRY_TO(TraverseType(T->getBaseType())); 1040 TRY_TO(TraverseType(T->getUnderlyingType())); 1041}) 1042 1043DEF_TRAVERSE_TYPE(AutoType, { 1044 TRY_TO(TraverseType(T->getDeducedType())); 1045 if (T->isConstrained()) { 1046 TRY_TO(TraverseDecl(T->getTypeConstraintConcept())); 1047 TRY_TO(TraverseTemplateArguments(T->getArgs(), T->getNumArgs())); 1048 } 1049}) 1050DEF_TRAVERSE_TYPE(DeducedTemplateSpecializationType, { 1051 TRY_TO(TraverseTemplateName(T->getTemplateName())); 1052 TRY_TO(TraverseType(T->getDeducedType())); 1053}) 1054 1055DEF_TRAVERSE_TYPE(RecordType, {}) 1056DEF_TRAVERSE_TYPE(EnumType, {}) 1057DEF_TRAVERSE_TYPE(TemplateTypeParmType, {}) 1058DEF_TRAVERSE_TYPE(SubstTemplateTypeParmType, { 1059 TRY_TO(TraverseType(T->getReplacementType())); 1060}) 1061DEF_TRAVERSE_TYPE(SubstTemplateTypeParmPackType, { 1062 TRY_TO(TraverseTemplateArgument(T->getArgumentPack())); 1063}) 1064 1065DEF_TRAVERSE_TYPE(TemplateSpecializationType, { 1066 TRY_TO(TraverseTemplateName(T->getTemplateName())); 1067 TRY_TO(TraverseTemplateArguments(T->getArgs(), T->getNumArgs())); 1068}) 1069 1070DEF_TRAVERSE_TYPE(InjectedClassNameType, {}) 1071 1072DEF_TRAVERSE_TYPE(AttributedType, 1073 { TRY_TO(TraverseType(T->getModifiedType())); }) 1074 1075DEF_TRAVERSE_TYPE(ParenType, { TRY_TO(TraverseType(T->getInnerType())); }) 1076 1077DEF_TRAVERSE_TYPE(MacroQualifiedType, 1078 { TRY_TO(TraverseType(T->getUnderlyingType())); }) 1079 1080DEF_TRAVERSE_TYPE(ElaboratedType, { 1081 if (T->getQualifier()) { 1082 TRY_TO(TraverseNestedNameSpecifier(T->getQualifier())); 1083 } 1084 TRY_TO(TraverseType(T->getNamedType())); 1085}) 1086 1087DEF_TRAVERSE_TYPE(DependentNameType, 1088 { TRY_TO(TraverseNestedNameSpecifier(T->getQualifier())); }) 1089 1090DEF_TRAVERSE_TYPE(DependentTemplateSpecializationType, { 1091 TRY_TO(TraverseNestedNameSpecifier(T->getQualifier())); 1092 TRY_TO(TraverseTemplateArguments(T->getArgs(), T->getNumArgs())); 1093}) 1094 1095DEF_TRAVERSE_TYPE(PackExpansionType, { TRY_TO(TraverseType(T->getPattern())); }) 1096 1097DEF_TRAVERSE_TYPE(ObjCTypeParamType, {}) 1098 1099DEF_TRAVERSE_TYPE(ObjCInterfaceType, {}) 1100 1101DEF_TRAVERSE_TYPE(ObjCObjectType, { 1102 // We have to watch out here because an ObjCInterfaceType's base 1103 // type is itself. 1104 if (T->getBaseType().getTypePtr() != T) 1105 TRY_TO(TraverseType(T->getBaseType())); 1106 for (auto typeArg : T->getTypeArgsAsWritten()) { 1107 TRY_TO(TraverseType(typeArg)); 1108 } 1109}) 1110 1111DEF_TRAVERSE_TYPE(ObjCObjectPointerType, 1112 { TRY_TO(TraverseType(T->getPointeeType())); }) 1113 1114DEF_TRAVERSE_TYPE(AtomicType, { TRY_TO(TraverseType(T->getValueType())); }) 1115 1116DEF_TRAVERSE_TYPE(PipeType, { TRY_TO(TraverseType(T->getElementType())); }) 1117 1118#undef DEF_TRAVERSE_TYPE 1119 1120// ----------------- TypeLoc traversal ----------------- 1121 1122// This macro makes available a variable TL, the passed-in TypeLoc. 1123// If requested, it calls WalkUpFrom* for the Type in the given TypeLoc, 1124// in addition to WalkUpFrom* for the TypeLoc itself, such that existing 1125// clients that override the WalkUpFrom*Type() and/or Visit*Type() methods 1126// continue to work. 1127#define DEF_TRAVERSE_TYPELOC(TYPE, CODE) \ 1128 template <typename Derived> \ 1129 bool RecursiveASTVisitor<Derived>::Traverse##TYPE##Loc(TYPE##Loc TL) { \ 1130 if (getDerived().shouldWalkTypesOfTypeLocs()) \ 1131 TRY_TO(WalkUpFrom##TYPE(const_cast<TYPE *>(TL.getTypePtr()))); \ 1132 TRY_TO(WalkUpFrom##TYPE##Loc(TL)); \ 1133 { CODE; } \ 1134 return true; \ 1135 } 1136 1137template <typename Derived> 1138bool 1139RecursiveASTVisitor<Derived>::TraverseQualifiedTypeLoc(QualifiedTypeLoc TL) { 1140 // Move this over to the 'main' typeloc tree. Note that this is a 1141 // move -- we pretend that we were really looking at the unqualified 1142 // typeloc all along -- rather than a recursion, so we don't follow 1143 // the normal CRTP plan of going through 1144 // getDerived().TraverseTypeLoc. If we did, we'd be traversing 1145 // twice for the same type (once as a QualifiedTypeLoc version of 1146 // the type, once as an UnqualifiedTypeLoc version of the type), 1147 // which in effect means we'd call VisitTypeLoc twice with the 1148 // 'same' type. This solves that problem, at the cost of never 1149 // seeing the qualified version of the type (unless the client 1150 // subclasses TraverseQualifiedTypeLoc themselves). It's not a 1151 // perfect solution. A perfect solution probably requires making 1152 // QualifiedTypeLoc a wrapper around TypeLoc -- like QualType is a 1153 // wrapper around Type* -- rather than being its own class in the 1154 // type hierarchy. 1155 return TraverseTypeLoc(TL.getUnqualifiedLoc()); 1156} 1157 1158DEF_TRAVERSE_TYPELOC(BuiltinType, {}) 1159 1160// FIXME: ComplexTypeLoc is unfinished 1161DEF_TRAVERSE_TYPELOC(ComplexType, { 1162 TRY_TO(TraverseType(TL.getTypePtr()->getElementType())); 1163}) 1164 1165DEF_TRAVERSE_TYPELOC(PointerType, 1166 { TRY_TO(TraverseTypeLoc(TL.getPointeeLoc())); }) 1167 1168DEF_TRAVERSE_TYPELOC(BlockPointerType, 1169 { TRY_TO(TraverseTypeLoc(TL.getPointeeLoc())); }) 1170 1171DEF_TRAVERSE_TYPELOC(LValueReferenceType, 1172 { TRY_TO(TraverseTypeLoc(TL.getPointeeLoc())); }) 1173 1174DEF_TRAVERSE_TYPELOC(RValueReferenceType, 1175 { TRY_TO(TraverseTypeLoc(TL.getPointeeLoc())); }) 1176 1177// We traverse this in the type case as well, but how is it not reached through 1178// the pointee type? 1179DEF_TRAVERSE_TYPELOC(MemberPointerType, { 1180 if (auto *TSI = TL.getClassTInfo()) 1181 TRY_TO(TraverseTypeLoc(TSI->getTypeLoc())); 1182 else 1183 TRY_TO(TraverseType(QualType(TL.getTypePtr()->getClass(), 0))); 1184 TRY_TO(TraverseTypeLoc(TL.getPointeeLoc())); 1185}) 1186 1187DEF_TRAVERSE_TYPELOC(AdjustedType, 1188 { TRY_TO(TraverseTypeLoc(TL.getOriginalLoc())); }) 1189 1190DEF_TRAVERSE_TYPELOC(DecayedType, 1191 { TRY_TO(TraverseTypeLoc(TL.getOriginalLoc())); }) 1192 1193template <typename Derived> 1194bool RecursiveASTVisitor<Derived>::TraverseArrayTypeLocHelper(ArrayTypeLoc TL) { 1195 // This isn't available for ArrayType, but is for the ArrayTypeLoc. 1196 TRY_TO(TraverseStmt(TL.getSizeExpr())); 1197 return true; 1198} 1199 1200DEF_TRAVERSE_TYPELOC(ConstantArrayType, { 1201 TRY_TO(TraverseTypeLoc(TL.getElementLoc())); 1202 return TraverseArrayTypeLocHelper(TL); 1203}) 1204 1205DEF_TRAVERSE_TYPELOC(IncompleteArrayType, { 1206 TRY_TO(TraverseTypeLoc(TL.getElementLoc())); 1207 return TraverseArrayTypeLocHelper(TL); 1208}) 1209 1210DEF_TRAVERSE_TYPELOC(VariableArrayType, { 1211 TRY_TO(TraverseTypeLoc(TL.getElementLoc())); 1212 return TraverseArrayTypeLocHelper(TL); 1213}) 1214 1215DEF_TRAVERSE_TYPELOC(DependentSizedArrayType, { 1216 TRY_TO(TraverseTypeLoc(TL.getElementLoc())); 1217 return TraverseArrayTypeLocHelper(TL); 1218}) 1219 1220DEF_TRAVERSE_TYPELOC(DependentAddressSpaceType, { 1221 TRY_TO(TraverseStmt(TL.getTypePtr()->getAddrSpaceExpr())); 1222 TRY_TO(TraverseType(TL.getTypePtr()->getPointeeType())); 1223}) 1224 1225// FIXME: order? why not size expr first? 1226// FIXME: base VectorTypeLoc is unfinished 1227DEF_TRAVERSE_TYPELOC(DependentSizedExtVectorType, { 1228 if (TL.getTypePtr()->getSizeExpr()) 1229 TRY_TO(TraverseStmt(TL.getTypePtr()->getSizeExpr())); 1230 TRY_TO(TraverseType(TL.getTypePtr()->getElementType())); 1231}) 1232 1233// FIXME: VectorTypeLoc is unfinished 1234DEF_TRAVERSE_TYPELOC(VectorType, { 1235 TRY_TO(TraverseType(TL.getTypePtr()->getElementType())); 1236}) 1237 1238DEF_TRAVERSE_TYPELOC(DependentVectorType, { 1239 if (TL.getTypePtr()->getSizeExpr()) 1240 TRY_TO(TraverseStmt(TL.getTypePtr()->getSizeExpr())); 1241 TRY_TO(TraverseType(TL.getTypePtr()->getElementType())); 1242}) 1243 1244// FIXME: size and attributes 1245// FIXME: base VectorTypeLoc is unfinished 1246DEF_TRAVERSE_TYPELOC(ExtVectorType, { 1247 TRY_TO(TraverseType(TL.getTypePtr()->getElementType())); 1248}) 1249 1250DEF_TRAVERSE_TYPELOC(FunctionNoProtoType, 1251 { TRY_TO(TraverseTypeLoc(TL.getReturnLoc())); }) 1252 1253// FIXME: location of exception specifications (attributes?) 1254DEF_TRAVERSE_TYPELOC(FunctionProtoType, { 1255 TRY_TO(TraverseTypeLoc(TL.getReturnLoc())); 1256 1257 const FunctionProtoType *T = TL.getTypePtr(); 1258 1259 for (unsigned I = 0, E = TL.getNumParams(); I != E; ++I) { 1260 if (TL.getParam(I)) { 1261 TRY_TO(TraverseDecl(TL.getParam(I))); 1262 } else if (I < T->getNumParams()) { 1263 TRY_TO(TraverseType(T->getParamType(I))); 1264 } 1265 } 1266 1267 for (const auto &E : T->exceptions()) { 1268 TRY_TO(TraverseType(E)); 1269 } 1270 1271 if (Expr *NE = T->getNoexceptExpr()) 1272 TRY_TO(TraverseStmt(NE)); 1273}) 1274 1275DEF_TRAVERSE_TYPELOC(UnresolvedUsingType, {}) 1276DEF_TRAVERSE_TYPELOC(TypedefType, {}) 1277 1278DEF_TRAVERSE_TYPELOC(TypeOfExprType, 1279 { TRY_TO(TraverseStmt(TL.getUnderlyingExpr())); }) 1280 1281DEF_TRAVERSE_TYPELOC(TypeOfType, { 1282 TRY_TO(TraverseTypeLoc(TL.getUnderlyingTInfo()->getTypeLoc())); 1283}) 1284 1285// FIXME: location of underlying expr 1286DEF_TRAVERSE_TYPELOC(DecltypeType, { 1287 TRY_TO(TraverseStmt(TL.getTypePtr()->getUnderlyingExpr())); 1288}) 1289 1290DEF_TRAVERSE_TYPELOC(UnaryTransformType, { 1291 TRY_TO(TraverseTypeLoc(TL.getUnderlyingTInfo()->getTypeLoc())); 1292}) 1293 1294DEF_TRAVERSE_TYPELOC(AutoType, { 1295 TRY_TO(TraverseType(TL.getTypePtr()->getDeducedType())); 1296 if (TL.isConstrained()) { 1297 TRY_TO(TraverseNestedNameSpecifierLoc(TL.getNestedNameSpecifierLoc())); 1298 TRY_TO(TraverseDeclarationNameInfo(TL.getConceptNameInfo())); 1299 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I) 1300 TRY_TO(TraverseTemplateArgumentLoc(TL.getArgLoc(I))); 1301 } 1302}) 1303 1304DEF_TRAVERSE_TYPELOC(DeducedTemplateSpecializationType, { 1305 TRY_TO(TraverseTemplateName(TL.getTypePtr()->getTemplateName())); 1306 TRY_TO(TraverseType(TL.getTypePtr()->getDeducedType())); 1307}) 1308 1309DEF_TRAVERSE_TYPELOC(RecordType, {}) 1310DEF_TRAVERSE_TYPELOC(EnumType, {}) 1311DEF_TRAVERSE_TYPELOC(TemplateTypeParmType, {}) 1312DEF_TRAVERSE_TYPELOC(SubstTemplateTypeParmType, { 1313 TRY_TO(TraverseType(TL.getTypePtr()->getReplacementType())); 1314}) 1315DEF_TRAVERSE_TYPELOC(SubstTemplateTypeParmPackType, { 1316 TRY_TO(TraverseTemplateArgument(TL.getTypePtr()->getArgumentPack())); 1317}) 1318 1319// FIXME: use the loc for the template name? 1320DEF_TRAVERSE_TYPELOC(TemplateSpecializationType, { 1321 TRY_TO(TraverseTemplateName(TL.getTypePtr()->getTemplateName())); 1322 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I) { 1323 TRY_TO(TraverseTemplateArgumentLoc(TL.getArgLoc(I))); 1324 } 1325}) 1326 1327DEF_TRAVERSE_TYPELOC(InjectedClassNameType, {}) 1328 1329DEF_TRAVERSE_TYPELOC(ParenType, { TRY_TO(TraverseTypeLoc(TL.getInnerLoc())); }) 1330 1331DEF_TRAVERSE_TYPELOC(MacroQualifiedType, 1332 { TRY_TO(TraverseTypeLoc(TL.getInnerLoc())); }) 1333 1334DEF_TRAVERSE_TYPELOC(AttributedType, 1335 { TRY_TO(TraverseTypeLoc(TL.getModifiedLoc())); }) 1336 1337DEF_TRAVERSE_TYPELOC(ElaboratedType, { 1338 if (TL.getQualifierLoc()) { 1339 TRY_TO(TraverseNestedNameSpecifierLoc(TL.getQualifierLoc())); 1340 } 1341 TRY_TO(TraverseTypeLoc(TL.getNamedTypeLoc())); 1342}) 1343 1344DEF_TRAVERSE_TYPELOC(DependentNameType, { 1345 TRY_TO(TraverseNestedNameSpecifierLoc(TL.getQualifierLoc())); 1346}) 1347 1348DEF_TRAVERSE_TYPELOC(DependentTemplateSpecializationType, { 1349 if (TL.getQualifierLoc()) { 1350 TRY_TO(TraverseNestedNameSpecifierLoc(TL.getQualifierLoc())); 1351 } 1352 1353 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I) { 1354 TRY_TO(TraverseTemplateArgumentLoc(TL.getArgLoc(I))); 1355 } 1356}) 1357 1358DEF_TRAVERSE_TYPELOC(PackExpansionType, 1359 { TRY_TO(TraverseTypeLoc(TL.getPatternLoc())); }) 1360 1361DEF_TRAVERSE_TYPELOC(ObjCTypeParamType, {}) 1362 1363DEF_TRAVERSE_TYPELOC(ObjCInterfaceType, {}) 1364 1365DEF_TRAVERSE_TYPELOC(ObjCObjectType, { 1366 // We have to watch out here because an ObjCInterfaceType's base 1367 // type is itself. 1368 if (TL.getTypePtr()->getBaseType().getTypePtr() != TL.getTypePtr()) 1369 TRY_TO(TraverseTypeLoc(TL.getBaseLoc())); 1370 for (unsigned i = 0, n = TL.getNumTypeArgs(); i != n; ++i) 1371 TRY_TO(TraverseTypeLoc(TL.getTypeArgTInfo(i)->getTypeLoc())); 1372}) 1373 1374DEF_TRAVERSE_TYPELOC(ObjCObjectPointerType, 1375 { TRY_TO(TraverseTypeLoc(TL.getPointeeLoc())); }) 1376 1377DEF_TRAVERSE_TYPELOC(AtomicType, { TRY_TO(TraverseTypeLoc(TL.getValueLoc())); }) 1378 1379DEF_TRAVERSE_TYPELOC(PipeType, { TRY_TO(TraverseTypeLoc(TL.getValueLoc())); }) 1380 1381#undef DEF_TRAVERSE_TYPELOC 1382 1383// ----------------- Decl traversal ----------------- 1384// 1385// For a Decl, we automate (in the DEF_TRAVERSE_DECL macro) traversing 1386// the children that come from the DeclContext associated with it. 1387// Therefore each Traverse* only needs to worry about children other 1388// than those. 1389 1390template <typename Derived> 1391bool RecursiveASTVisitor<Derived>::canIgnoreChildDeclWhileTraversingDeclContext( 1392 const Decl *Child) { 1393 // BlockDecls are traversed through BlockExprs, 1394 // CapturedDecls are traversed through CapturedStmts. 1395 if (isa<BlockDecl>(Child) || isa<CapturedDecl>(Child)) 1396 return true; 1397 // Lambda classes are traversed through LambdaExprs. 1398 if (const CXXRecordDecl* Cls = dyn_cast<CXXRecordDecl>(Child)) 1399 return Cls->isLambda(); 1400 return false; 1401} 1402 1403template <typename Derived> 1404bool RecursiveASTVisitor<Derived>::TraverseDeclContextHelper(DeclContext *DC) { 1405 if (!DC) 1406 return true; 1407 1408 for (auto *Child : DC->decls()) { 1409 if (!canIgnoreChildDeclWhileTraversingDeclContext(Child)) 1410 TRY_TO(TraverseDecl(Child)); 1411 } 1412 1413 return true; 1414} 1415 1416// This macro makes available a variable D, the passed-in decl. 1417#define DEF_TRAVERSE_DECL(DECL, CODE) \ 1418 template <typename Derived> \ 1419 bool RecursiveASTVisitor<Derived>::Traverse##DECL(DECL *D) { \ 1420 bool ShouldVisitChildren = true; \ 1421 bool ReturnValue = true; \ 1422 if (!getDerived().shouldTraversePostOrder()) \ 1423 TRY_TO(WalkUpFrom##DECL(D)); \ 1424 { CODE; } \ 1425 if (ReturnValue && ShouldVisitChildren) \ 1426 TRY_TO(TraverseDeclContextHelper(dyn_cast<DeclContext>(D))); \ 1427 if (ReturnValue) { \ 1428 /* Visit any attributes attached to this declaration. */ \ 1429 for (auto *I : D->attrs()) \ 1430 TRY_TO(getDerived().TraverseAttr(I)); \ 1431 } \ 1432 if (ReturnValue && getDerived().shouldTraversePostOrder()) \ 1433 TRY_TO(WalkUpFrom##DECL(D)); \ 1434 return ReturnValue; \ 1435 } 1436 1437DEF_TRAVERSE_DECL(AccessSpecDecl, {}) 1438 1439DEF_TRAVERSE_DECL(BlockDecl, { 1440 if (TypeSourceInfo *TInfo = D->getSignatureAsWritten()) 1441 TRY_TO(TraverseTypeLoc(TInfo->getTypeLoc())); 1442 TRY_TO(TraverseStmt(D->getBody())); 1443 for (const auto &I : D->captures()) { 1444 if (I.hasCopyExpr()) { 1445 TRY_TO(TraverseStmt(I.getCopyExpr())); 1446 } 1447 } 1448 ShouldVisitChildren = false; 1449}) 1450 1451DEF_TRAVERSE_DECL(CapturedDecl, { 1452 TRY_TO(TraverseStmt(D->getBody())); 1453 ShouldVisitChildren = false; 1454}) 1455 1456DEF_TRAVERSE_DECL(EmptyDecl, {}) 1457 1458DEF_TRAVERSE_DECL(LifetimeExtendedTemporaryDecl, { 1459 TRY_TO(TraverseStmt(D->getTemporaryExpr())); 1460}) 1461 1462DEF_TRAVERSE_DECL(FileScopeAsmDecl, 1463 { TRY_TO(TraverseStmt(D->getAsmString())); }) 1464 1465DEF_TRAVERSE_DECL(ImportDecl, {}) 1466 1467DEF_TRAVERSE_DECL(FriendDecl, { 1468 // Friend is either decl or a type. 1469 if (D->getFriendType()) 1470 TRY_TO(TraverseTypeLoc(D->getFriendType()->getTypeLoc())); 1471 else 1472 TRY_TO(TraverseDecl(D->getFriendDecl())); 1473}) 1474 1475DEF_TRAVERSE_DECL(FriendTemplateDecl, { 1476 if (D->getFriendType()) 1477 TRY_TO(TraverseTypeLoc(D->getFriendType()->getTypeLoc())); 1478 else 1479 TRY_TO(TraverseDecl(D->getFriendDecl())); 1480 for (unsigned I = 0, E = D->getNumTemplateParameters(); I < E; ++I) { 1481 TemplateParameterList *TPL = D->getTemplateParameterList(I); 1482 for (TemplateParameterList::iterator ITPL = TPL->begin(), ETPL = TPL->end(); 1483 ITPL != ETPL; ++ITPL) { 1484 TRY_TO(TraverseDecl(*ITPL)); 1485 } 1486 } 1487}) 1488 1489DEF_TRAVERSE_DECL(ClassScopeFunctionSpecializationDecl, { 1490 TRY_TO(TraverseDecl(D->getSpecialization())); 1491 1492 if (D->hasExplicitTemplateArgs()) { 1493 TRY_TO(TraverseTemplateArgumentLocsHelper( 1494 D->getTemplateArgsAsWritten()->getTemplateArgs(), 1495 D->getTemplateArgsAsWritten()->NumTemplateArgs)); 1496 } 1497}) 1498 1499DEF_TRAVERSE_DECL(LinkageSpecDecl, {}) 1500 1501DEF_TRAVERSE_DECL(ExportDecl, {}) 1502 1503DEF_TRAVERSE_DECL(ObjCPropertyImplDecl, {// FIXME: implement this 1504 }) 1505 1506DEF_TRAVERSE_DECL(StaticAssertDecl, { 1507 TRY_TO(TraverseStmt(D->getAssertExpr())); 1508 TRY_TO(TraverseStmt(D->getMessage())); 1509}) 1510 1511DEF_TRAVERSE_DECL( 1512 TranslationUnitDecl, 1513 {// Code in an unnamed namespace shows up automatically in 1514 // decls_begin()/decls_end(). Thus we don't need to recurse on 1515 // D->getAnonymousNamespace(). 1516 }) 1517 1518DEF_TRAVERSE_DECL(PragmaCommentDecl, {}) 1519 1520DEF_TRAVERSE_DECL(PragmaDetectMismatchDecl, {}) 1521 1522DEF_TRAVERSE_DECL(ExternCContextDecl, {}) 1523 1524DEF_TRAVERSE_DECL(NamespaceAliasDecl, { 1525 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1526 1527 // We shouldn't traverse an aliased namespace, since it will be 1528 // defined (and, therefore, traversed) somewhere else. 1529 ShouldVisitChildren = false; 1530}) 1531 1532DEF_TRAVERSE_DECL(LabelDecl, {// There is no code in a LabelDecl. 1533 }) 1534 1535DEF_TRAVERSE_DECL( 1536 NamespaceDecl, 1537 {// Code in an unnamed namespace shows up automatically in 1538 // decls_begin()/decls_end(). Thus we don't need to recurse on 1539 // D->getAnonymousNamespace(). 1540 }) 1541 1542DEF_TRAVERSE_DECL(ObjCCompatibleAliasDecl, {// FIXME: implement 1543 }) 1544 1545DEF_TRAVERSE_DECL(ObjCCategoryDecl, {// FIXME: implement 1546 if (ObjCTypeParamList *typeParamList = D->getTypeParamList()) { 1547 for (auto typeParam : *typeParamList) { 1548 TRY_TO(TraverseObjCTypeParamDecl(typeParam)); 1549 } 1550 } 1551}) 1552 1553DEF_TRAVERSE_DECL(ObjCCategoryImplDecl, {// FIXME: implement 1554 }) 1555 1556DEF_TRAVERSE_DECL(ObjCImplementationDecl, {// FIXME: implement 1557 }) 1558 1559DEF_TRAVERSE_DECL(ObjCInterfaceDecl, {// FIXME: implement 1560 if (ObjCTypeParamList *typeParamList = D->getTypeParamListAsWritten()) { 1561 for (auto typeParam : *typeParamList) { 1562 TRY_TO(TraverseObjCTypeParamDecl(typeParam)); 1563 } 1564 } 1565 1566 if (TypeSourceInfo *superTInfo = D->getSuperClassTInfo()) { 1567 TRY_TO(TraverseTypeLoc(superTInfo->getTypeLoc())); 1568 } 1569}) 1570 1571DEF_TRAVERSE_DECL(ObjCProtocolDecl, {// FIXME: implement 1572 }) 1573 1574DEF_TRAVERSE_DECL(ObjCMethodDecl, { 1575 if (D->getReturnTypeSourceInfo()) { 1576 TRY_TO(TraverseTypeLoc(D->getReturnTypeSourceInfo()->getTypeLoc())); 1577 } 1578 for (ParmVarDecl *Parameter : D->parameters()) { 1579 TRY_TO(TraverseDecl(Parameter)); 1580 } 1581 if (D->isThisDeclarationADefinition()) { 1582 TRY_TO(TraverseStmt(D->getBody())); 1583 } 1584 ShouldVisitChildren = false; 1585}) 1586 1587DEF_TRAVERSE_DECL(ObjCTypeParamDecl, { 1588 if (D->hasExplicitBound()) { 1589 TRY_TO(TraverseTypeLoc(D->getTypeSourceInfo()->getTypeLoc())); 1590 // We shouldn't traverse D->getTypeForDecl(); it's a result of 1591 // declaring the type alias, not something that was written in the 1592 // source. 1593 } 1594}) 1595 1596DEF_TRAVERSE_DECL(ObjCPropertyDecl, { 1597 if (D->getTypeSourceInfo()) 1598 TRY_TO(TraverseTypeLoc(D->getTypeSourceInfo()->getTypeLoc())); 1599 else 1600 TRY_TO(TraverseType(D->getType())); 1601 ShouldVisitChildren = false; 1602}) 1603 1604DEF_TRAVERSE_DECL(UsingDecl, { 1605 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1606 TRY_TO(TraverseDeclarationNameInfo(D->getNameInfo())); 1607}) 1608 1609DEF_TRAVERSE_DECL(UsingPackDecl, {}) 1610 1611DEF_TRAVERSE_DECL(UsingDirectiveDecl, { 1612 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1613}) 1614 1615DEF_TRAVERSE_DECL(UsingShadowDecl, {}) 1616 1617DEF_TRAVERSE_DECL(ConstructorUsingShadowDecl, {}) 1618 1619DEF_TRAVERSE_DECL(OMPThreadPrivateDecl, { 1620 for (auto *I : D->varlists()) { 1621 TRY_TO(TraverseStmt(I)); 1622 } 1623 }) 1624 1625DEF_TRAVERSE_DECL(OMPRequiresDecl, { 1626 for (auto *C : D->clauselists()) { 1627 TRY_TO(TraverseOMPClause(C)); 1628 } 1629}) 1630 1631DEF_TRAVERSE_DECL(OMPDeclareReductionDecl, { 1632 TRY_TO(TraverseStmt(D->getCombiner())); 1633 if (auto *Initializer = D->getInitializer()) 1634 TRY_TO(TraverseStmt(Initializer)); 1635 TRY_TO(TraverseType(D->getType())); 1636 return true; 1637}) 1638 1639DEF_TRAVERSE_DECL(OMPDeclareMapperDecl, { 1640 for (auto *C : D->clauselists()) 1641 TRY_TO(TraverseOMPClause(C)); 1642 TRY_TO(TraverseType(D->getType())); 1643 return true; 1644}) 1645 1646DEF_TRAVERSE_DECL(OMPCapturedExprDecl, { TRY_TO(TraverseVarHelper(D)); }) 1647 1648DEF_TRAVERSE_DECL(OMPAllocateDecl, { 1649 for (auto *I : D->varlists()) 1650 TRY_TO(TraverseStmt(I)); 1651 for (auto *C : D->clauselists()) 1652 TRY_TO(TraverseOMPClause(C)); 1653}) 1654 1655// A helper method for TemplateDecl's children. 1656template <typename Derived> 1657bool RecursiveASTVisitor<Derived>::TraverseTemplateParameterListHelper( 1658 TemplateParameterList *TPL) { 1659 if (TPL) { 1660 for (NamedDecl *D : *TPL) { 1661 TRY_TO(TraverseDecl(D)); 1662 } 1663 if (Expr *RequiresClause = TPL->getRequiresClause()) { 1664 TRY_TO(TraverseStmt(RequiresClause)); 1665 } 1666 } 1667 return true; 1668} 1669 1670template <typename Derived> 1671template <typename T> 1672bool RecursiveASTVisitor<Derived>::TraverseDeclTemplateParameterLists(T *D) { 1673 for (unsigned i = 0; i < D->getNumTemplateParameterLists(); i++) { 1674 TemplateParameterList *TPL = D->getTemplateParameterList(i); 1675 TraverseTemplateParameterListHelper(TPL); 1676 } 1677 return true; 1678} 1679 1680template <typename Derived> 1681bool RecursiveASTVisitor<Derived>::TraverseTemplateInstantiations( 1682 ClassTemplateDecl *D) { 1683 for (auto *SD : D->specializations()) { 1684 for (auto *RD : SD->redecls()) { 1685 // We don't want to visit injected-class-names in this traversal. 1686 if (cast<CXXRecordDecl>(RD)->isInjectedClassName()) 1687 continue; 1688 1689 switch ( 1690 cast<ClassTemplateSpecializationDecl>(RD)->getSpecializationKind()) { 1691 // Visit the implicit instantiations with the requested pattern. 1692 case TSK_Undeclared: 1693 case TSK_ImplicitInstantiation: 1694 TRY_TO(TraverseDecl(RD)); 1695 break; 1696 1697 // We don't need to do anything on an explicit instantiation 1698 // or explicit specialization because there will be an explicit 1699 // node for it elsewhere. 1700 case TSK_ExplicitInstantiationDeclaration: 1701 case TSK_ExplicitInstantiationDefinition: 1702 case TSK_ExplicitSpecialization: 1703 break; 1704 } 1705 } 1706 } 1707 1708 return true; 1709} 1710 1711template <typename Derived> 1712bool RecursiveASTVisitor<Derived>::TraverseTemplateInstantiations( 1713 VarTemplateDecl *D) { 1714 for (auto *SD : D->specializations()) { 1715 for (auto *RD : SD->redecls()) { 1716 switch ( 1717 cast<VarTemplateSpecializationDecl>(RD)->getSpecializationKind()) { 1718 case TSK_Undeclared: 1719 case TSK_ImplicitInstantiation: 1720 TRY_TO(TraverseDecl(RD)); 1721 break; 1722 1723 case TSK_ExplicitInstantiationDeclaration: 1724 case TSK_ExplicitInstantiationDefinition: 1725 case TSK_ExplicitSpecialization: 1726 break; 1727 } 1728 } 1729 } 1730 1731 return true; 1732} 1733 1734// A helper method for traversing the instantiations of a 1735// function while skipping its specializations. 1736template <typename Derived> 1737bool RecursiveASTVisitor<Derived>::TraverseTemplateInstantiations( 1738 FunctionTemplateDecl *D) { 1739 for (auto *FD : D->specializations()) { 1740 for (auto *RD : FD->redecls()) { 1741 switch (RD->getTemplateSpecializationKind()) { 1742 case TSK_Undeclared: 1743 case TSK_ImplicitInstantiation: 1744 // We don't know what kind of FunctionDecl this is. 1745 TRY_TO(TraverseDecl(RD)); 1746 break; 1747 1748 // FIXME: For now traverse explicit instantiations here. Change that 1749 // once they are represented as dedicated nodes in the AST. 1750 case TSK_ExplicitInstantiationDeclaration: 1751 case TSK_ExplicitInstantiationDefinition: 1752 TRY_TO(TraverseDecl(RD)); 1753 break; 1754 1755 case TSK_ExplicitSpecialization: 1756 break; 1757 } 1758 } 1759 } 1760 1761 return true; 1762} 1763 1764// This macro unifies the traversal of class, variable and function 1765// template declarations. 1766#define DEF_TRAVERSE_TMPL_DECL(TMPLDECLKIND) \ 1767 DEF_TRAVERSE_DECL(TMPLDECLKIND##TemplateDecl, { \ 1768 TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters())); \ 1769 TRY_TO(TraverseDecl(D->getTemplatedDecl())); \ 1770 \ 1771 /* By default, we do not traverse the instantiations of \ 1772 class templates since they do not appear in the user code. The \ 1773 following code optionally traverses them. \ 1774 \ 1775 We only traverse the class instantiations when we see the canonical \ 1776 declaration of the template, to ensure we only visit them once. */ \ 1777 if (getDerived().shouldVisitTemplateInstantiations() && \ 1778 D == D->getCanonicalDecl()) \ 1779 TRY_TO(TraverseTemplateInstantiations(D)); \ 1780 \ 1781 /* Note that getInstantiatedFromMemberTemplate() is just a link \ 1782 from a template instantiation back to the template from which \ 1783 it was instantiated, and thus should not be traversed. */ \ 1784 }) 1785 1786DEF_TRAVERSE_TMPL_DECL(Class) 1787DEF_TRAVERSE_TMPL_DECL(Var) 1788DEF_TRAVERSE_TMPL_DECL(Function) 1789 1790DEF_TRAVERSE_DECL(TemplateTemplateParmDecl, { 1791 // D is the "T" in something like 1792 // template <template <typename> class T> class container { }; 1793 TRY_TO(TraverseDecl(D->getTemplatedDecl())); 1794 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) 1795 TRY_TO(TraverseTemplateArgumentLoc(D->getDefaultArgument())); 1796 TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters())); 1797}) 1798 1799DEF_TRAVERSE_DECL(BuiltinTemplateDecl, { 1800 TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters())); 1801}) 1802 1803DEF_TRAVERSE_DECL(TemplateTypeParmDecl, { 1804 // D is the "T" in something like "template<typename T> class vector;" 1805 if (D->getTypeForDecl()) 1806 TRY_TO(TraverseType(QualType(D->getTypeForDecl(), 0))); 1807 if (const auto *TC = D->getTypeConstraint()) 1808 TRY_TO(TraverseConceptReference(*TC)); 1809 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) 1810 TRY_TO(TraverseTypeLoc(D->getDefaultArgumentInfo()->getTypeLoc())); 1811}) 1812 1813DEF_TRAVERSE_DECL(TypedefDecl, { 1814 TRY_TO(TraverseTypeLoc(D->getTypeSourceInfo()->getTypeLoc())); 1815 // We shouldn't traverse D->getTypeForDecl(); it's a result of 1816 // declaring the typedef, not something that was written in the 1817 // source. 1818}) 1819 1820DEF_TRAVERSE_DECL(TypeAliasDecl, { 1821 TRY_TO(TraverseTypeLoc(D->getTypeSourceInfo()->getTypeLoc())); 1822 // We shouldn't traverse D->getTypeForDecl(); it's a result of 1823 // declaring the type alias, not something that was written in the 1824 // source. 1825}) 1826 1827DEF_TRAVERSE_DECL(TypeAliasTemplateDecl, { 1828 TRY_TO(TraverseDecl(D->getTemplatedDecl())); 1829 TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters())); 1830}) 1831 1832DEF_TRAVERSE_DECL(ConceptDecl, { 1833 TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters())); 1834 TRY_TO(TraverseStmt(D->getConstraintExpr())); 1835}) 1836 1837DEF_TRAVERSE_DECL(UnresolvedUsingTypenameDecl, { 1838 // A dependent using declaration which was marked with 'typename'. 1839 // template<class T> class A : public B<T> { using typename B<T>::foo; }; 1840 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1841 // We shouldn't traverse D->getTypeForDecl(); it's a result of 1842 // declaring the type, not something that was written in the 1843 // source. 1844}) 1845 1846DEF_TRAVERSE_DECL(EnumDecl, { 1847 TRY_TO(TraverseDeclTemplateParameterLists(D)); 1848 1849 if (D->getTypeForDecl()) 1850 TRY_TO(TraverseType(QualType(D->getTypeForDecl(), 0))); 1851 1852 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1853 // The enumerators are already traversed by 1854 // decls_begin()/decls_end(). 1855}) 1856 1857// Helper methods for RecordDecl and its children. 1858template <typename Derived> 1859bool RecursiveASTVisitor<Derived>::TraverseRecordHelper(RecordDecl *D) { 1860 // We shouldn't traverse D->getTypeForDecl(); it's a result of 1861 // declaring the type, not something that was written in the source. 1862 1863 TRY_TO(TraverseDeclTemplateParameterLists(D)); 1864 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1865 return true; 1866} 1867 1868template <typename Derived> 1869bool RecursiveASTVisitor<Derived>::TraverseCXXBaseSpecifier( 1870 const CXXBaseSpecifier &Base) { 1871 TRY_TO(TraverseTypeLoc(Base.getTypeSourceInfo()->getTypeLoc())); 1872 return true; 1873} 1874 1875template <typename Derived> 1876bool RecursiveASTVisitor<Derived>::TraverseCXXRecordHelper(CXXRecordDecl *D) { 1877 if (!TraverseRecordHelper(D)) 1878 return false; 1879 if (D->isCompleteDefinition()) { 1880 for (const auto &I : D->bases()) { 1881 TRY_TO(TraverseCXXBaseSpecifier(I)); 1882 } 1883 // We don't traverse the friends or the conversions, as they are 1884 // already in decls_begin()/decls_end(). 1885 } 1886 return true; 1887} 1888 1889DEF_TRAVERSE_DECL(RecordDecl, { TRY_TO(TraverseRecordHelper(D)); }) 1890 1891DEF_TRAVERSE_DECL(CXXRecordDecl, { TRY_TO(TraverseCXXRecordHelper(D)); }) 1892 1893#define DEF_TRAVERSE_TMPL_SPEC_DECL(TMPLDECLKIND) \ 1894 DEF_TRAVERSE_DECL(TMPLDECLKIND##TemplateSpecializationDecl, { \ 1895 /* For implicit instantiations ("set<int> x;"), we don't want to \ 1896 recurse at all, since the instatiated template isn't written in \ 1897 the source code anywhere. (Note the instatiated *type* -- \ 1898 set<int> -- is written, and will still get a callback of \ 1899 TemplateSpecializationType). For explicit instantiations \ 1900 ("template set<int>;"), we do need a callback, since this \ 1901 is the only callback that's made for this instantiation. \ 1902 We use getTypeAsWritten() to distinguish. */ \ 1903 if (TypeSourceInfo *TSI = D->getTypeAsWritten()) \ 1904 TRY_TO(TraverseTypeLoc(TSI->getTypeLoc())); \ 1905 \ 1906 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); \ 1907 if (!getDerived().shouldVisitTemplateInstantiations() && \ 1908 D->getTemplateSpecializationKind() != TSK_ExplicitSpecialization) \ 1909 /* Returning from here skips traversing the \ 1910 declaration context of the *TemplateSpecializationDecl \ 1911 (embedded in the DEF_TRAVERSE_DECL() macro) \ 1912 which contains the instantiated members of the template. */ \ 1913 return true; \ 1914 }) 1915 1916DEF_TRAVERSE_TMPL_SPEC_DECL(Class) 1917DEF_TRAVERSE_TMPL_SPEC_DECL(Var) 1918 1919template <typename Derived> 1920bool RecursiveASTVisitor<Derived>::TraverseTemplateArgumentLocsHelper( 1921 const TemplateArgumentLoc *TAL, unsigned Count) { 1922 for (unsigned I = 0; I < Count; ++I) { 1923 TRY_TO(TraverseTemplateArgumentLoc(TAL[I])); 1924 } 1925 return true; 1926} 1927 1928#define DEF_TRAVERSE_TMPL_PART_SPEC_DECL(TMPLDECLKIND, DECLKIND) \ 1929 DEF_TRAVERSE_DECL(TMPLDECLKIND##TemplatePartialSpecializationDecl, { \ 1930 /* The partial specialization. */ \ 1931 if (TemplateParameterList *TPL = D->getTemplateParameters()) { \ 1932 for (TemplateParameterList::iterator I = TPL->begin(), E = TPL->end(); \ 1933 I != E; ++I) { \ 1934 TRY_TO(TraverseDecl(*I)); \ 1935 } \ 1936 } \ 1937 /* The args that remains unspecialized. */ \ 1938 TRY_TO(TraverseTemplateArgumentLocsHelper( \ 1939 D->getTemplateArgsAsWritten()->getTemplateArgs(), \ 1940 D->getTemplateArgsAsWritten()->NumTemplateArgs)); \ 1941 \ 1942 /* Don't need the *TemplatePartialSpecializationHelper, even \ 1943 though that's our parent class -- we already visit all the \ 1944 template args here. */ \ 1945 TRY_TO(Traverse##DECLKIND##Helper(D)); \ 1946 \ 1947 /* Instantiations will have been visited with the primary template. */ \ 1948 }) 1949 1950DEF_TRAVERSE_TMPL_PART_SPEC_DECL(Class, CXXRecord) 1951DEF_TRAVERSE_TMPL_PART_SPEC_DECL(Var, Var) 1952 1953DEF_TRAVERSE_DECL(EnumConstantDecl, { TRY_TO(TraverseStmt(D->getInitExpr())); }) 1954 1955DEF_TRAVERSE_DECL(UnresolvedUsingValueDecl, { 1956 // Like UnresolvedUsingTypenameDecl, but without the 'typename': 1957 // template <class T> Class A : public Base<T> { using Base<T>::foo; }; 1958 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1959 TRY_TO(TraverseDeclarationNameInfo(D->getNameInfo())); 1960}) 1961 1962DEF_TRAVERSE_DECL(IndirectFieldDecl, {}) 1963 1964template <typename Derived> 1965bool RecursiveASTVisitor<Derived>::TraverseDeclaratorHelper(DeclaratorDecl *D) { 1966 TRY_TO(TraverseDeclTemplateParameterLists(D)); 1967 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 1968 if (D->getTypeSourceInfo()) 1969 TRY_TO(TraverseTypeLoc(D->getTypeSourceInfo()->getTypeLoc())); 1970 else 1971 TRY_TO(TraverseType(D->getType())); 1972 return true; 1973} 1974 1975DEF_TRAVERSE_DECL(DecompositionDecl, { 1976 TRY_TO(TraverseVarHelper(D)); 1977 for (auto *Binding : D->bindings()) { 1978 TRY_TO(TraverseDecl(Binding)); 1979 } 1980}) 1981 1982DEF_TRAVERSE_DECL(BindingDecl, { 1983 if (getDerived().shouldVisitImplicitCode()) 1984 TRY_TO(TraverseStmt(D->getBinding())); 1985}) 1986 1987DEF_TRAVERSE_DECL(MSPropertyDecl, { TRY_TO(TraverseDeclaratorHelper(D)); }) 1988 1989DEF_TRAVERSE_DECL(FieldDecl, { 1990 TRY_TO(TraverseDeclaratorHelper(D)); 1991 if (D->isBitField()) 1992 TRY_TO(TraverseStmt(D->getBitWidth())); 1993 else if (D->hasInClassInitializer()) 1994 TRY_TO(TraverseStmt(D->getInClassInitializer())); 1995}) 1996 1997DEF_TRAVERSE_DECL(ObjCAtDefsFieldDecl, { 1998 TRY_TO(TraverseDeclaratorHelper(D)); 1999 if (D->isBitField()) 2000 TRY_TO(TraverseStmt(D->getBitWidth())); 2001 // FIXME: implement the rest. 2002}) 2003 2004DEF_TRAVERSE_DECL(ObjCIvarDecl, { 2005 TRY_TO(TraverseDeclaratorHelper(D)); 2006 if (D->isBitField()) 2007 TRY_TO(TraverseStmt(D->getBitWidth())); 2008 // FIXME: implement the rest. 2009}) 2010 2011template <typename Derived> 2012bool RecursiveASTVisitor<Derived>::TraverseFunctionHelper(FunctionDecl *D) { 2013 TRY_TO(TraverseDeclTemplateParameterLists(D)); 2014 TRY_TO(TraverseNestedNameSpecifierLoc(D->getQualifierLoc())); 2015 TRY_TO(TraverseDeclarationNameInfo(D->getNameInfo())); 2016 2017 // If we're an explicit template specialization, iterate over the 2018 // template args that were explicitly specified. If we were doing 2019 // this in typing order, we'd do it between the return type and 2020 // the function args, but both are handled by the FunctionTypeLoc 2021 // above, so we have to choose one side. I've decided to do before. 2022 if (const FunctionTemplateSpecializationInfo *FTSI = 2023 D->getTemplateSpecializationInfo()) { 2024 if (FTSI->getTemplateSpecializationKind() != TSK_Undeclared && 2025 FTSI->getTemplateSpecializationKind() != TSK_ImplicitInstantiation) { 2026 // A specialization might not have explicit template arguments if it has 2027 // a templated return type and concrete arguments. 2028 if (const ASTTemplateArgumentListInfo *TALI = 2029 FTSI->TemplateArgumentsAsWritten) { 2030 TRY_TO(TraverseTemplateArgumentLocsHelper(TALI->getTemplateArgs(), 2031 TALI->NumTemplateArgs)); 2032 } 2033 } 2034 } 2035 2036 // Visit the function type itself, which can be either 2037 // FunctionNoProtoType or FunctionProtoType, or a typedef. This 2038 // also covers the return type and the function parameters, 2039 // including exception specifications. 2040 if (TypeSourceInfo *TSI = D->getTypeSourceInfo()) { 2041 TRY_TO(TraverseTypeLoc(TSI->getTypeLoc())); 2042 } else if (getDerived().shouldVisitImplicitCode()) { 2043 // Visit parameter variable declarations of the implicit function 2044 // if the traverser is visiting implicit code. Parameter variable 2045 // declarations do not have valid TypeSourceInfo, so to visit them 2046 // we need to traverse the declarations explicitly. 2047 for (ParmVarDecl *Parameter : D->parameters()) { 2048 TRY_TO(TraverseDecl(Parameter)); 2049 } 2050 } 2051 2052 // Visit the trailing requires clause, if any. 2053 if (Expr *TrailingRequiresClause = D->getTrailingRequiresClause()) { 2054 TRY_TO(TraverseStmt(TrailingRequiresClause)); 2055 } 2056 2057 if (CXXConstructorDecl *Ctor = dyn_cast<CXXConstructorDecl>(D)) { 2058 // Constructor initializers. 2059 for (auto *I : Ctor->inits()) { 2060 if (I->isWritten() || getDerived().shouldVisitImplicitCode()) 2061 TRY_TO(TraverseConstructorInitializer(I)); 2062 } 2063 } 2064 2065 bool VisitBody = D->isThisDeclarationADefinition(); 2066 // If a method is set to default outside the class definition the compiler 2067 // generates the method body and adds it to the AST. 2068 if (const auto *MD = dyn_cast<CXXMethodDecl>(D)) 2069 VisitBody &= !MD->isDefaulted() || getDerived().shouldVisitImplicitCode(); 2070 2071 if (VisitBody) { 2072 TRY_TO(TraverseStmt(D->getBody())); // Function body. 2073 } 2074 return true; 2075} 2076 2077DEF_TRAVERSE_DECL(FunctionDecl, { 2078 // We skip decls_begin/decls_end, which are already covered by 2079 // TraverseFunctionHelper(). 2080 ShouldVisitChildren = false; 2081 ReturnValue = TraverseFunctionHelper(D); 2082}) 2083 2084DEF_TRAVERSE_DECL(CXXDeductionGuideDecl, { 2085 // We skip decls_begin/decls_end, which are already covered by 2086 // TraverseFunctionHelper(). 2087 ShouldVisitChildren = false; 2088 ReturnValue = TraverseFunctionHelper(D); 2089}) 2090 2091DEF_TRAVERSE_DECL(CXXMethodDecl, { 2092 // We skip decls_begin/decls_end, which are already covered by 2093 // TraverseFunctionHelper(). 2094 ShouldVisitChildren = false; 2095 ReturnValue = TraverseFunctionHelper(D); 2096}) 2097 2098DEF_TRAVERSE_DECL(CXXConstructorDecl, { 2099 // We skip decls_begin/decls_end, which are already covered by 2100 // TraverseFunctionHelper(). 2101 ShouldVisitChildren = false; 2102 ReturnValue = TraverseFunctionHelper(D); 2103}) 2104 2105// CXXConversionDecl is the declaration of a type conversion operator. 2106// It's not a cast expression. 2107DEF_TRAVERSE_DECL(CXXConversionDecl, { 2108 // We skip decls_begin/decls_end, which are already covered by 2109 // TraverseFunctionHelper(). 2110 ShouldVisitChildren = false; 2111 ReturnValue = TraverseFunctionHelper(D); 2112}) 2113 2114DEF_TRAVERSE_DECL(CXXDestructorDecl, { 2115 // We skip decls_begin/decls_end, which are already covered by 2116 // TraverseFunctionHelper(). 2117 ShouldVisitChildren = false; 2118 ReturnValue = TraverseFunctionHelper(D); 2119}) 2120 2121template <typename Derived> 2122bool RecursiveASTVisitor<Derived>::TraverseVarHelper(VarDecl *D) { 2123 TRY_TO(TraverseDeclaratorHelper(D)); 2124 // Default params are taken care of when we traverse the ParmVarDecl. 2125 if (!isa<ParmVarDecl>(D) && 2126 (!D->isCXXForRangeDecl() || getDerived().shouldVisitImplicitCode())) 2127 TRY_TO(TraverseStmt(D->getInit())); 2128 return true; 2129} 2130 2131DEF_TRAVERSE_DECL(VarDecl, { TRY_TO(TraverseVarHelper(D)); }) 2132 2133DEF_TRAVERSE_DECL(ImplicitParamDecl, { TRY_TO(TraverseVarHelper(D)); }) 2134 2135DEF_TRAVERSE_DECL(NonTypeTemplateParmDecl, { 2136 // A non-type template parameter, e.g. "S" in template<int S> class Foo ... 2137 TRY_TO(TraverseDeclaratorHelper(D)); 2138 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) 2139 TRY_TO(TraverseStmt(D->getDefaultArgument())); 2140}) 2141 2142DEF_TRAVERSE_DECL(ParmVarDecl, { 2143 TRY_TO(TraverseVarHelper(D)); 2144 2145 if (D->hasDefaultArg() && D->hasUninstantiatedDefaultArg() && 2146 !D->hasUnparsedDefaultArg()) 2147 TRY_TO(TraverseStmt(D->getUninstantiatedDefaultArg())); 2148 2149 if (D->hasDefaultArg() && !D->hasUninstantiatedDefaultArg() && 2150 !D->hasUnparsedDefaultArg()) 2151 TRY_TO(TraverseStmt(D->getDefaultArg())); 2152}) 2153 2154DEF_TRAVERSE_DECL(RequiresExprBodyDecl, {}) 2155 2156#undef DEF_TRAVERSE_DECL 2157 2158// ----------------- Stmt traversal ----------------- 2159// 2160// For stmts, we automate (in the DEF_TRAVERSE_STMT macro) iterating 2161// over the children defined in children() (every stmt defines these, 2162// though sometimes the range is empty). Each individual Traverse* 2163// method only needs to worry about children other than those. To see 2164// what children() does for a given class, see, e.g., 2165// http://clang.llvm.org/doxygen/Stmt_8cpp_source.html 2166 2167// This macro makes available a variable S, the passed-in stmt. 2168#define DEF_TRAVERSE_STMT(STMT, CODE) \ 2169 template <typename Derived> \ 2170 bool RecursiveASTVisitor<Derived>::Traverse##STMT( \ 2171 STMT *S, DataRecursionQueue *Queue) { \ 2172 bool ShouldVisitChildren = true; \ 2173 bool ReturnValue = true; \ 2174 if (!getDerived().shouldTraversePostOrder()) \ 2175 TRY_TO(WalkUpFrom##STMT(S)); \ 2176 { CODE; } \ 2177 if (ShouldVisitChildren) { \ 2178 for (Stmt * SubStmt : getDerived().getStmtChildren(S)) { \ 2179 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(SubStmt); \ 2180 } \ 2181 } \ 2182 if (!Queue && ReturnValue && getDerived().shouldTraversePostOrder()) \ 2183 TRY_TO(WalkUpFrom##STMT(S)); \ 2184 return ReturnValue; \ 2185 } 2186 2187DEF_TRAVERSE_STMT(GCCAsmStmt, { 2188 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getAsmString()); 2189 for (unsigned I = 0, E = S->getNumInputs(); I < E; ++I) { 2190 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getInputConstraintLiteral(I)); 2191 } 2192 for (unsigned I = 0, E = S->getNumOutputs(); I < E; ++I) { 2193 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getOutputConstraintLiteral(I)); 2194 } 2195 for (unsigned I = 0, E = S->getNumClobbers(); I < E; ++I) { 2196 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getClobberStringLiteral(I)); 2197 } 2198 // children() iterates over inputExpr and outputExpr. 2199}) 2200 2201DEF_TRAVERSE_STMT( 2202 MSAsmStmt, 2203 {// FIXME: MS Asm doesn't currently parse Constraints, Clobbers, etc. Once 2204 // added this needs to be implemented. 2205 }) 2206 2207DEF_TRAVERSE_STMT(CXXCatchStmt, { 2208 TRY_TO(TraverseDecl(S->getExceptionDecl())); 2209 // children() iterates over the handler block. 2210}) 2211 2212DEF_TRAVERSE_STMT(DeclStmt, { 2213 for (auto *I : S->decls()) { 2214 TRY_TO(TraverseDecl(I)); 2215 } 2216 // Suppress the default iteration over children() by 2217 // returning. Here's why: A DeclStmt looks like 'type var [= 2218 // initializer]'. The decls above already traverse over the 2219 // initializers, so we don't have to do it again (which 2220 // children() would do). 2221 ShouldVisitChildren = false; 2222}) 2223 2224// These non-expr stmts (most of them), do not need any action except 2225// iterating over the children. 2226DEF_TRAVERSE_STMT(BreakStmt, {}) 2227DEF_TRAVERSE_STMT(CXXTryStmt, {}) 2228DEF_TRAVERSE_STMT(CaseStmt, {}) 2229DEF_TRAVERSE_STMT(CompoundStmt, {}) 2230DEF_TRAVERSE_STMT(ContinueStmt, {}) 2231DEF_TRAVERSE_STMT(DefaultStmt, {}) 2232DEF_TRAVERSE_STMT(DoStmt, {}) 2233DEF_TRAVERSE_STMT(ForStmt, {}) 2234DEF_TRAVERSE_STMT(GotoStmt, {}) 2235DEF_TRAVERSE_STMT(IfStmt, {}) 2236DEF_TRAVERSE_STMT(IndirectGotoStmt, {}) 2237DEF_TRAVERSE_STMT(LabelStmt, {}) 2238DEF_TRAVERSE_STMT(AttributedStmt, {}) 2239DEF_TRAVERSE_STMT(NullStmt, {}) 2240DEF_TRAVERSE_STMT(ObjCAtCatchStmt, {}) 2241DEF_TRAVERSE_STMT(ObjCAtFinallyStmt, {}) 2242DEF_TRAVERSE_STMT(ObjCAtSynchronizedStmt, {}) 2243DEF_TRAVERSE_STMT(ObjCAtThrowStmt, {}) 2244DEF_TRAVERSE_STMT(ObjCAtTryStmt, {}) 2245DEF_TRAVERSE_STMT(ObjCForCollectionStmt, {}) 2246DEF_TRAVERSE_STMT(ObjCAutoreleasePoolStmt, {}) 2247 2248DEF_TRAVERSE_STMT(CXXForRangeStmt, { 2249 if (!getDerived().shouldVisitImplicitCode()) { 2250 if (S->getInit()) 2251 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getInit()); 2252 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getLoopVarStmt()); 2253 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getRangeInit()); 2254 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getBody()); 2255 // Visit everything else only if shouldVisitImplicitCode(). 2256 ShouldVisitChildren = false; 2257 } 2258}) 2259 2260DEF_TRAVERSE_STMT(MSDependentExistsStmt, { 2261 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2262 TRY_TO(TraverseDeclarationNameInfo(S->getNameInfo())); 2263}) 2264 2265DEF_TRAVERSE_STMT(ReturnStmt, {}) 2266DEF_TRAVERSE_STMT(SwitchStmt, {}) 2267DEF_TRAVERSE_STMT(WhileStmt, {}) 2268 2269DEF_TRAVERSE_STMT(ConstantExpr, {}) 2270 2271DEF_TRAVERSE_STMT(CXXDependentScopeMemberExpr, { 2272 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2273 TRY_TO(TraverseDeclarationNameInfo(S->getMemberNameInfo())); 2274 if (S->hasExplicitTemplateArgs()) { 2275 TRY_TO(TraverseTemplateArgumentLocsHelper(S->getTemplateArgs(), 2276 S->getNumTemplateArgs())); 2277 } 2278}) 2279 2280DEF_TRAVERSE_STMT(DeclRefExpr, { 2281 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2282 TRY_TO(TraverseDeclarationNameInfo(S->getNameInfo())); 2283 TRY_TO(TraverseTemplateArgumentLocsHelper(S->getTemplateArgs(), 2284 S->getNumTemplateArgs())); 2285}) 2286 2287DEF_TRAVERSE_STMT(DependentScopeDeclRefExpr, { 2288 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2289 TRY_TO(TraverseDeclarationNameInfo(S->getNameInfo())); 2290 if (S->hasExplicitTemplateArgs()) { 2291 TRY_TO(TraverseTemplateArgumentLocsHelper(S->getTemplateArgs(), 2292 S->getNumTemplateArgs())); 2293 } 2294}) 2295 2296DEF_TRAVERSE_STMT(MemberExpr, { 2297 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2298 TRY_TO(TraverseDeclarationNameInfo(S->getMemberNameInfo())); 2299 TRY_TO(TraverseTemplateArgumentLocsHelper(S->getTemplateArgs(), 2300 S->getNumTemplateArgs())); 2301}) 2302 2303DEF_TRAVERSE_STMT( 2304 ImplicitCastExpr, 2305 {// We don't traverse the cast type, as it's not written in the 2306 // source code. 2307 }) 2308 2309DEF_TRAVERSE_STMT(CStyleCastExpr, { 2310 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2311}) 2312 2313DEF_TRAVERSE_STMT(CXXFunctionalCastExpr, { 2314 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2315}) 2316 2317DEF_TRAVERSE_STMT(CXXConstCastExpr, { 2318 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2319}) 2320 2321DEF_TRAVERSE_STMT(CXXDynamicCastExpr, { 2322 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2323}) 2324 2325DEF_TRAVERSE_STMT(CXXReinterpretCastExpr, { 2326 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2327}) 2328 2329DEF_TRAVERSE_STMT(CXXStaticCastExpr, { 2330 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2331}) 2332 2333DEF_TRAVERSE_STMT(BuiltinBitCastExpr, { 2334 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2335}) 2336 2337template <typename Derived> 2338bool RecursiveASTVisitor<Derived>::TraverseSynOrSemInitListExpr( 2339 InitListExpr *S, DataRecursionQueue *Queue) { 2340 if (S) { 2341 // Skip this if we traverse postorder. We will visit it later 2342 // in PostVisitStmt. 2343 if (!getDerived().shouldTraversePostOrder()) 2344 TRY_TO(WalkUpFromInitListExpr(S)); 2345 2346 // All we need are the default actions. FIXME: use a helper function. 2347 for (Stmt *SubStmt : S->children()) { 2348 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(SubStmt); 2349 } 2350 } 2351 return true; 2352} 2353 2354template<typename Derived> 2355bool RecursiveASTVisitor<Derived>::TraverseConceptReference( 2356 const ConceptReference &C) { 2357 TRY_TO(TraverseNestedNameSpecifierLoc(C.getNestedNameSpecifierLoc())); 2358 TRY_TO(TraverseDeclarationNameInfo(C.getConceptNameInfo())); 2359 if (C.hasExplicitTemplateArgs()) 2360 TRY_TO(TraverseTemplateArgumentLocsHelper( 2361 C.getTemplateArgsAsWritten()->getTemplateArgs(), 2362 C.getTemplateArgsAsWritten()->NumTemplateArgs)); 2363 return true; 2364} 2365 2366// If shouldVisitImplicitCode() returns false, this method traverses only the 2367// syntactic form of InitListExpr. 2368// If shouldVisitImplicitCode() return true, this method is called once for 2369// each pair of syntactic and semantic InitListExpr, and it traverses the 2370// subtrees defined by the two forms. This may cause some of the children to be 2371// visited twice, if they appear both in the syntactic and the semantic form. 2372// 2373// There is no guarantee about which form \p S takes when this method is called. 2374template <typename Derived> 2375bool RecursiveASTVisitor<Derived>::TraverseInitListExpr( 2376 InitListExpr *S, DataRecursionQueue *Queue) { 2377 if (S->isSemanticForm() && S->isSyntacticForm()) { 2378 // `S` does not have alternative forms, traverse only once. 2379 TRY_TO(TraverseSynOrSemInitListExpr(S, Queue)); 2380 return true; 2381 } 2382 TRY_TO(TraverseSynOrSemInitListExpr( 2383 S->isSemanticForm() ? S->getSyntacticForm() : S, Queue)); 2384 if (getDerived().shouldVisitImplicitCode()) { 2385 // Only visit the semantic form if the clients are interested in implicit 2386 // compiler-generated. 2387 TRY_TO(TraverseSynOrSemInitListExpr( 2388 S->isSemanticForm() ? S : S->getSemanticForm(), Queue)); 2389 } 2390 return true; 2391} 2392 2393// GenericSelectionExpr is a special case because the types and expressions 2394// are interleaved. We also need to watch out for null types (default 2395// generic associations). 2396DEF_TRAVERSE_STMT(GenericSelectionExpr, { 2397 TRY_TO(TraverseStmt(S->getControllingExpr())); 2398 for (const GenericSelectionExpr::Association Assoc : S->associations()) { 2399 if (TypeSourceInfo *TSI = Assoc.getTypeSourceInfo()) 2400 TRY_TO(TraverseTypeLoc(TSI->getTypeLoc())); 2401 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(Assoc.getAssociationExpr()); 2402 } 2403 ShouldVisitChildren = false; 2404}) 2405 2406// PseudoObjectExpr is a special case because of the weirdness with 2407// syntactic expressions and opaque values. 2408DEF_TRAVERSE_STMT(PseudoObjectExpr, { 2409 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getSyntacticForm()); 2410 for (PseudoObjectExpr::semantics_iterator i = S->semantics_begin(), 2411 e = S->semantics_end(); 2412 i != e; ++i) { 2413 Expr *sub = *i; 2414 if (OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(sub)) 2415 sub = OVE->getSourceExpr(); 2416 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(sub); 2417 } 2418 ShouldVisitChildren = false; 2419}) 2420 2421DEF_TRAVERSE_STMT(CXXScalarValueInitExpr, { 2422 // This is called for code like 'return T()' where T is a built-in 2423 // (i.e. non-class) type. 2424 TRY_TO(TraverseTypeLoc(S->getTypeSourceInfo()->getTypeLoc())); 2425}) 2426 2427DEF_TRAVERSE_STMT(CXXNewExpr, { 2428 // The child-iterator will pick up the other arguments. 2429 TRY_TO(TraverseTypeLoc(S->getAllocatedTypeSourceInfo()->getTypeLoc())); 2430}) 2431 2432DEF_TRAVERSE_STMT(OffsetOfExpr, { 2433 // The child-iterator will pick up the expression representing 2434 // the field. 2435 // FIMXE: for code like offsetof(Foo, a.b.c), should we get 2436 // making a MemberExpr callbacks for Foo.a, Foo.a.b, and Foo.a.b.c? 2437 TRY_TO(TraverseTypeLoc(S->getTypeSourceInfo()->getTypeLoc())); 2438}) 2439 2440DEF_TRAVERSE_STMT(UnaryExprOrTypeTraitExpr, { 2441 // The child-iterator will pick up the arg if it's an expression, 2442 // but not if it's a type. 2443 if (S->isArgumentType()) 2444 TRY_TO(TraverseTypeLoc(S->getArgumentTypeInfo()->getTypeLoc())); 2445}) 2446 2447DEF_TRAVERSE_STMT(CXXTypeidExpr, { 2448 // The child-iterator will pick up the arg if it's an expression, 2449 // but not if it's a type. 2450 if (S->isTypeOperand()) 2451 TRY_TO(TraverseTypeLoc(S->getTypeOperandSourceInfo()->getTypeLoc())); 2452}) 2453 2454DEF_TRAVERSE_STMT(MSPropertyRefExpr, { 2455 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2456}) 2457 2458DEF_TRAVERSE_STMT(MSPropertySubscriptExpr, {}) 2459 2460DEF_TRAVERSE_STMT(CXXUuidofExpr, { 2461 // The child-iterator will pick up the arg if it's an expression, 2462 // but not if it's a type. 2463 if (S->isTypeOperand()) 2464 TRY_TO(TraverseTypeLoc(S->getTypeOperandSourceInfo()->getTypeLoc())); 2465}) 2466 2467DEF_TRAVERSE_STMT(TypeTraitExpr, { 2468 for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I) 2469 TRY_TO(TraverseTypeLoc(S->getArg(I)->getTypeLoc())); 2470}) 2471 2472DEF_TRAVERSE_STMT(ArrayTypeTraitExpr, { 2473 TRY_TO(TraverseTypeLoc(S->getQueriedTypeSourceInfo()->getTypeLoc())); 2474}) 2475 2476DEF_TRAVERSE_STMT(ExpressionTraitExpr, 2477 { TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getQueriedExpression()); }) 2478 2479DEF_TRAVERSE_STMT(VAArgExpr, { 2480 // The child-iterator will pick up the expression argument. 2481 TRY_TO(TraverseTypeLoc(S->getWrittenTypeInfo()->getTypeLoc())); 2482}) 2483 2484DEF_TRAVERSE_STMT(CXXTemporaryObjectExpr, { 2485 // This is called for code like 'return T()' where T is a class type. 2486 TRY_TO(TraverseTypeLoc(S->getTypeSourceInfo()->getTypeLoc())); 2487}) 2488 2489// Walk only the visible parts of lambda expressions. 2490DEF_TRAVERSE_STMT(LambdaExpr, { 2491 // Visit the capture list. 2492 for (unsigned I = 0, N = S->capture_size(); I != N; ++I) { 2493 const LambdaCapture *C = S->capture_begin() + I; 2494 if (C->isExplicit() || getDerived().shouldVisitImplicitCode()) { 2495 TRY_TO(TraverseLambdaCapture(S, C, S->capture_init_begin()[I])); 2496 } 2497 } 2498 2499 if (getDerived().shouldVisitImplicitCode()) { 2500 // The implicit model is simple: everything else is in the lambda class. 2501 TRY_TO(TraverseDecl(S->getLambdaClass())); 2502 } else { 2503 // We need to poke around to find the bits that might be explicitly written. 2504 TypeLoc TL = S->getCallOperator()->getTypeSourceInfo()->getTypeLoc(); 2505 FunctionProtoTypeLoc Proto = TL.getAsAdjusted<FunctionProtoTypeLoc>(); 2506 2507 for (Decl *D : S->getExplicitTemplateParameters()) { 2508 // Visit explicit template parameters. 2509 TRY_TO(TraverseDecl(D)); 2510 } 2511 if (S->hasExplicitParameters()) { 2512 // Visit parameters. 2513 for (unsigned I = 0, N = Proto.getNumParams(); I != N; ++I) 2514 TRY_TO(TraverseDecl(Proto.getParam(I))); 2515 } 2516 if (S->hasExplicitResultType()) 2517 TRY_TO(TraverseTypeLoc(Proto.getReturnLoc())); 2518 2519 auto *T = Proto.getTypePtr(); 2520 for (const auto &E : T->exceptions()) 2521 TRY_TO(TraverseType(E)); 2522 2523 if (Expr *NE = T->getNoexceptExpr()) 2524 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(NE); 2525 2526 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getBody()); 2527 } 2528 ShouldVisitChildren = false; 2529}) 2530 2531DEF_TRAVERSE_STMT(CXXUnresolvedConstructExpr, { 2532 // This is called for code like 'T()', where T is a template argument. 2533 TRY_TO(TraverseTypeLoc(S->getTypeSourceInfo()->getTypeLoc())); 2534}) 2535 2536// These expressions all might take explicit template arguments. 2537// We traverse those if so. FIXME: implement these. 2538DEF_TRAVERSE_STMT(CXXConstructExpr, {}) 2539DEF_TRAVERSE_STMT(CallExpr, {}) 2540DEF_TRAVERSE_STMT(CXXMemberCallExpr, {}) 2541 2542// These exprs (most of them), do not need any action except iterating 2543// over the children. 2544DEF_TRAVERSE_STMT(AddrLabelExpr, {}) 2545DEF_TRAVERSE_STMT(ArraySubscriptExpr, {}) 2546DEF_TRAVERSE_STMT(OMPArraySectionExpr, {}) 2547 2548DEF_TRAVERSE_STMT(BlockExpr, { 2549 TRY_TO(TraverseDecl(S->getBlockDecl())); 2550 return true; // no child statements to loop through. 2551}) 2552 2553DEF_TRAVERSE_STMT(ChooseExpr, {}) 2554DEF_TRAVERSE_STMT(CompoundLiteralExpr, { 2555 TRY_TO(TraverseTypeLoc(S->getTypeSourceInfo()->getTypeLoc())); 2556}) 2557DEF_TRAVERSE_STMT(CXXBindTemporaryExpr, {}) 2558DEF_TRAVERSE_STMT(CXXBoolLiteralExpr, {}) 2559 2560DEF_TRAVERSE_STMT(CXXDefaultArgExpr, { 2561 if (getDerived().shouldVisitImplicitCode()) 2562 TRY_TO(TraverseStmt(S->getExpr())); 2563}) 2564 2565DEF_TRAVERSE_STMT(CXXDefaultInitExpr, {}) 2566DEF_TRAVERSE_STMT(CXXDeleteExpr, {}) 2567DEF_TRAVERSE_STMT(ExprWithCleanups, {}) 2568DEF_TRAVERSE_STMT(CXXInheritedCtorInitExpr, {}) 2569DEF_TRAVERSE_STMT(CXXNullPtrLiteralExpr, {}) 2570DEF_TRAVERSE_STMT(CXXStdInitializerListExpr, {}) 2571 2572DEF_TRAVERSE_STMT(CXXPseudoDestructorExpr, { 2573 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2574 if (TypeSourceInfo *ScopeInfo = S->getScopeTypeInfo()) 2575 TRY_TO(TraverseTypeLoc(ScopeInfo->getTypeLoc())); 2576 if (TypeSourceInfo *DestroyedTypeInfo = S->getDestroyedTypeInfo()) 2577 TRY_TO(TraverseTypeLoc(DestroyedTypeInfo->getTypeLoc())); 2578}) 2579 2580DEF_TRAVERSE_STMT(CXXThisExpr, {}) 2581DEF_TRAVERSE_STMT(CXXThrowExpr, {}) 2582DEF_TRAVERSE_STMT(UserDefinedLiteral, {}) 2583DEF_TRAVERSE_STMT(DesignatedInitExpr, {}) 2584DEF_TRAVERSE_STMT(DesignatedInitUpdateExpr, {}) 2585DEF_TRAVERSE_STMT(ExtVectorElementExpr, {}) 2586DEF_TRAVERSE_STMT(GNUNullExpr, {}) 2587DEF_TRAVERSE_STMT(ImplicitValueInitExpr, {}) 2588DEF_TRAVERSE_STMT(NoInitExpr, {}) 2589DEF_TRAVERSE_STMT(ArrayInitLoopExpr, { 2590 // FIXME: The source expression of the OVE should be listed as 2591 // a child of the ArrayInitLoopExpr. 2592 if (OpaqueValueExpr *OVE = S->getCommonExpr()) 2593 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(OVE->getSourceExpr()); 2594}) 2595DEF_TRAVERSE_STMT(ArrayInitIndexExpr, {}) 2596DEF_TRAVERSE_STMT(ObjCBoolLiteralExpr, {}) 2597 2598DEF_TRAVERSE_STMT(ObjCEncodeExpr, { 2599 if (TypeSourceInfo *TInfo = S->getEncodedTypeSourceInfo()) 2600 TRY_TO(TraverseTypeLoc(TInfo->getTypeLoc())); 2601}) 2602 2603DEF_TRAVERSE_STMT(ObjCIsaExpr, {}) 2604DEF_TRAVERSE_STMT(ObjCIvarRefExpr, {}) 2605 2606DEF_TRAVERSE_STMT(ObjCMessageExpr, { 2607 if (TypeSourceInfo *TInfo = S->getClassReceiverTypeInfo()) 2608 TRY_TO(TraverseTypeLoc(TInfo->getTypeLoc())); 2609}) 2610 2611DEF_TRAVERSE_STMT(ObjCPropertyRefExpr, {}) 2612DEF_TRAVERSE_STMT(ObjCSubscriptRefExpr, {}) 2613DEF_TRAVERSE_STMT(ObjCProtocolExpr, {}) 2614DEF_TRAVERSE_STMT(ObjCSelectorExpr, {}) 2615DEF_TRAVERSE_STMT(ObjCIndirectCopyRestoreExpr, {}) 2616 2617DEF_TRAVERSE_STMT(ObjCBridgedCastExpr, { 2618 TRY_TO(TraverseTypeLoc(S->getTypeInfoAsWritten()->getTypeLoc())); 2619}) 2620 2621DEF_TRAVERSE_STMT(ObjCAvailabilityCheckExpr, {}) 2622DEF_TRAVERSE_STMT(ParenExpr, {}) 2623DEF_TRAVERSE_STMT(ParenListExpr, {}) 2624DEF_TRAVERSE_STMT(PredefinedExpr, {}) 2625DEF_TRAVERSE_STMT(ShuffleVectorExpr, {}) 2626DEF_TRAVERSE_STMT(ConvertVectorExpr, {}) 2627DEF_TRAVERSE_STMT(StmtExpr, {}) 2628DEF_TRAVERSE_STMT(SourceLocExpr, {}) 2629 2630DEF_TRAVERSE_STMT(UnresolvedLookupExpr, { 2631 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2632 if (S->hasExplicitTemplateArgs()) { 2633 TRY_TO(TraverseTemplateArgumentLocsHelper(S->getTemplateArgs(), 2634 S->getNumTemplateArgs())); 2635 } 2636}) 2637 2638DEF_TRAVERSE_STMT(UnresolvedMemberExpr, { 2639 TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc())); 2640 if (S->hasExplicitTemplateArgs()) { 2641 TRY_TO(TraverseTemplateArgumentLocsHelper(S->getTemplateArgs(), 2642 S->getNumTemplateArgs())); 2643 } 2644}) 2645 2646DEF_TRAVERSE_STMT(SEHTryStmt, {}) 2647DEF_TRAVERSE_STMT(SEHExceptStmt, {}) 2648DEF_TRAVERSE_STMT(SEHFinallyStmt, {}) 2649DEF_TRAVERSE_STMT(SEHLeaveStmt, {}) 2650DEF_TRAVERSE_STMT(CapturedStmt, { TRY_TO(TraverseDecl(S->getCapturedDecl())); }) 2651 2652DEF_TRAVERSE_STMT(CXXOperatorCallExpr, {}) 2653DEF_TRAVERSE_STMT(CXXRewrittenBinaryOperator, { 2654 if (!getDerived().shouldVisitImplicitCode()) { 2655 CXXRewrittenBinaryOperator::DecomposedForm Decomposed = 2656 S->getDecomposedForm(); 2657 TRY_TO(TraverseStmt(const_cast<Expr*>(Decomposed.LHS))); 2658 TRY_TO(TraverseStmt(const_cast<Expr*>(Decomposed.RHS))); 2659 ShouldVisitChildren = false; 2660 } 2661}) 2662DEF_TRAVERSE_STMT(OpaqueValueExpr, {}) 2663DEF_TRAVERSE_STMT(TypoExpr, {}) 2664DEF_TRAVERSE_STMT(CUDAKernelCallExpr, {}) 2665 2666// These operators (all of them) do not need any action except 2667// iterating over the children. 2668DEF_TRAVERSE_STMT(BinaryConditionalOperator, {}) 2669DEF_TRAVERSE_STMT(ConditionalOperator, {}) 2670DEF_TRAVERSE_STMT(UnaryOperator, {}) 2671DEF_TRAVERSE_STMT(BinaryOperator, {}) 2672DEF_TRAVERSE_STMT(CompoundAssignOperator, {}) 2673DEF_TRAVERSE_STMT(CXXNoexceptExpr, {}) 2674DEF_TRAVERSE_STMT(PackExpansionExpr, {}) 2675DEF_TRAVERSE_STMT(SizeOfPackExpr, {}) 2676DEF_TRAVERSE_STMT(SubstNonTypeTemplateParmPackExpr, {}) 2677DEF_TRAVERSE_STMT(SubstNonTypeTemplateParmExpr, {}) 2678DEF_TRAVERSE_STMT(FunctionParmPackExpr, {}) 2679DEF_TRAVERSE_STMT(CXXFoldExpr, {}) 2680DEF_TRAVERSE_STMT(AtomicExpr, {}) 2681 2682DEF_TRAVERSE_STMT(MaterializeTemporaryExpr, { 2683 if (S->getLifetimeExtendedTemporaryDecl()) { 2684 TRY_TO(TraverseLifetimeExtendedTemporaryDecl( 2685 S->getLifetimeExtendedTemporaryDecl())); 2686 ShouldVisitChildren = false; 2687 } 2688}) 2689// For coroutines expressions, traverse either the operand 2690// as written or the implied calls, depending on what the 2691// derived class requests. 2692DEF_TRAVERSE_STMT(CoroutineBodyStmt, { 2693 if (!getDerived().shouldVisitImplicitCode()) { 2694 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getBody()); 2695 ShouldVisitChildren = false; 2696 } 2697}) 2698DEF_TRAVERSE_STMT(CoreturnStmt, { 2699 if (!getDerived().shouldVisitImplicitCode()) { 2700 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getOperand()); 2701 ShouldVisitChildren = false; 2702 } 2703}) 2704DEF_TRAVERSE_STMT(CoawaitExpr, { 2705 if (!getDerived().shouldVisitImplicitCode()) { 2706 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getOperand()); 2707 ShouldVisitChildren = false; 2708 } 2709}) 2710DEF_TRAVERSE_STMT(DependentCoawaitExpr, { 2711 if (!getDerived().shouldVisitImplicitCode()) { 2712 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getOperand()); 2713 ShouldVisitChildren = false; 2714 } 2715}) 2716DEF_TRAVERSE_STMT(CoyieldExpr, { 2717 if (!getDerived().shouldVisitImplicitCode()) { 2718 TRY_TO_TRAVERSE_OR_ENQUEUE_STMT(S->getOperand()); 2719 ShouldVisitChildren = false; 2720 } 2721}) 2722 2723DEF_TRAVERSE_STMT(ConceptSpecializationExpr, { 2724 TRY_TO(TraverseConceptReference(*S)); 2725}) 2726 2727DEF_TRAVERSE_STMT(RequiresExpr, { 2728 TRY_TO(TraverseDecl(S->getBody())); 2729 for (ParmVarDecl *Parm : S->getLocalParameters()) 2730 TRY_TO(TraverseDecl(Parm)); 2731 for (concepts::Requirement *Req : S->getRequirements()) 2732 if (auto *TypeReq = dyn_cast<concepts::TypeRequirement>(Req)) { 2733 if (!TypeReq->isSubstitutionFailure()) 2734 TRY_TO(TraverseTypeLoc(TypeReq->getType()->getTypeLoc())); 2735 } else if (auto *ExprReq = dyn_cast<concepts::ExprRequirement>(Req)) { 2736 if (!ExprReq->isExprSubstitutionFailure()) 2737 TRY_TO(TraverseStmt(ExprReq->getExpr())); 2738 auto &RetReq = ExprReq->getReturnTypeRequirement(); 2739 if (RetReq.isTypeConstraint()) 2740 TRY_TO(TraverseTemplateParameterListHelper( 2741 RetReq.getTypeConstraintTemplateParameterList())); 2742 } else { 2743 auto *NestedReq = cast<concepts::NestedRequirement>(Req); 2744 if (!NestedReq->isSubstitutionFailure()) 2745 TRY_TO(TraverseStmt(NestedReq->getConstraintExpr())); 2746 } 2747}) 2748 2749// These literals (all of them) do not need any action. 2750DEF_TRAVERSE_STMT(IntegerLiteral, {}) 2751DEF_TRAVERSE_STMT(FixedPointLiteral, {}) 2752DEF_TRAVERSE_STMT(CharacterLiteral, {}) 2753DEF_TRAVERSE_STMT(FloatingLiteral, {}) 2754DEF_TRAVERSE_STMT(ImaginaryLiteral, {}) 2755DEF_TRAVERSE_STMT(StringLiteral, {}) 2756DEF_TRAVERSE_STMT(ObjCStringLiteral, {}) 2757DEF_TRAVERSE_STMT(ObjCBoxedExpr, {}) 2758DEF_TRAVERSE_STMT(ObjCArrayLiteral, {}) 2759DEF_TRAVERSE_STMT(ObjCDictionaryLiteral, {}) 2760 2761// Traverse OpenCL: AsType, Convert. 2762DEF_TRAVERSE_STMT(AsTypeExpr, {}) 2763 2764// OpenMP directives. 2765template <typename Derived> 2766bool RecursiveASTVisitor<Derived>::TraverseOMPExecutableDirective( 2767 OMPExecutableDirective *S) { 2768 for (auto *C : S->clauses()) { 2769 TRY_TO(TraverseOMPClause(C)); 2770 } 2771 return true; 2772} 2773 2774template <typename Derived> 2775bool 2776RecursiveASTVisitor<Derived>::TraverseOMPLoopDirective(OMPLoopDirective *S) { 2777 return TraverseOMPExecutableDirective(S); 2778} 2779 2780DEF_TRAVERSE_STMT(OMPParallelDirective, 2781 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2782 2783DEF_TRAVERSE_STMT(OMPSimdDirective, 2784 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2785 2786DEF_TRAVERSE_STMT(OMPForDirective, 2787 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2788 2789DEF_TRAVERSE_STMT(OMPForSimdDirective, 2790 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2791 2792DEF_TRAVERSE_STMT(OMPSectionsDirective, 2793 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2794 2795DEF_TRAVERSE_STMT(OMPSectionDirective, 2796 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2797 2798DEF_TRAVERSE_STMT(OMPSingleDirective, 2799 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2800 2801DEF_TRAVERSE_STMT(OMPMasterDirective, 2802 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2803 2804DEF_TRAVERSE_STMT(OMPCriticalDirective, { 2805 TRY_TO(TraverseDeclarationNameInfo(S->getDirectiveName())); 2806 TRY_TO(TraverseOMPExecutableDirective(S)); 2807}) 2808 2809DEF_TRAVERSE_STMT(OMPParallelForDirective, 2810 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2811 2812DEF_TRAVERSE_STMT(OMPParallelForSimdDirective, 2813 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2814 2815DEF_TRAVERSE_STMT(OMPParallelMasterDirective, 2816 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2817 2818DEF_TRAVERSE_STMT(OMPParallelSectionsDirective, 2819 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2820 2821DEF_TRAVERSE_STMT(OMPTaskDirective, 2822 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2823 2824DEF_TRAVERSE_STMT(OMPTaskyieldDirective, 2825 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2826 2827DEF_TRAVERSE_STMT(OMPBarrierDirective, 2828 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2829 2830DEF_TRAVERSE_STMT(OMPTaskwaitDirective, 2831 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2832 2833DEF_TRAVERSE_STMT(OMPTaskgroupDirective, 2834 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2835 2836DEF_TRAVERSE_STMT(OMPCancellationPointDirective, 2837 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2838 2839DEF_TRAVERSE_STMT(OMPCancelDirective, 2840 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2841 2842DEF_TRAVERSE_STMT(OMPFlushDirective, 2843 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2844 2845DEF_TRAVERSE_STMT(OMPOrderedDirective, 2846 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2847 2848DEF_TRAVERSE_STMT(OMPAtomicDirective, 2849 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2850 2851DEF_TRAVERSE_STMT(OMPTargetDirective, 2852 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2853 2854DEF_TRAVERSE_STMT(OMPTargetDataDirective, 2855 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2856 2857DEF_TRAVERSE_STMT(OMPTargetEnterDataDirective, 2858 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2859 2860DEF_TRAVERSE_STMT(OMPTargetExitDataDirective, 2861 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2862 2863DEF_TRAVERSE_STMT(OMPTargetParallelDirective, 2864 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2865 2866DEF_TRAVERSE_STMT(OMPTargetParallelForDirective, 2867 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2868 2869DEF_TRAVERSE_STMT(OMPTeamsDirective, 2870 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2871 2872DEF_TRAVERSE_STMT(OMPTargetUpdateDirective, 2873 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2874 2875DEF_TRAVERSE_STMT(OMPTaskLoopDirective, 2876 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2877 2878DEF_TRAVERSE_STMT(OMPTaskLoopSimdDirective, 2879 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2880 2881DEF_TRAVERSE_STMT(OMPMasterTaskLoopDirective, 2882 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2883 2884DEF_TRAVERSE_STMT(OMPMasterTaskLoopSimdDirective, 2885 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2886 2887DEF_TRAVERSE_STMT(OMPParallelMasterTaskLoopDirective, 2888 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2889 2890DEF_TRAVERSE_STMT(OMPParallelMasterTaskLoopSimdDirective, 2891 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2892 2893DEF_TRAVERSE_STMT(OMPDistributeDirective, 2894 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2895 2896DEF_TRAVERSE_STMT(OMPDistributeParallelForDirective, 2897 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2898 2899DEF_TRAVERSE_STMT(OMPDistributeParallelForSimdDirective, 2900 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2901 2902DEF_TRAVERSE_STMT(OMPDistributeSimdDirective, 2903 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2904 2905DEF_TRAVERSE_STMT(OMPTargetParallelForSimdDirective, 2906 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2907 2908DEF_TRAVERSE_STMT(OMPTargetSimdDirective, 2909 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2910 2911DEF_TRAVERSE_STMT(OMPTeamsDistributeDirective, 2912 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2913 2914DEF_TRAVERSE_STMT(OMPTeamsDistributeSimdDirective, 2915 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2916 2917DEF_TRAVERSE_STMT(OMPTeamsDistributeParallelForSimdDirective, 2918 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2919 2920DEF_TRAVERSE_STMT(OMPTeamsDistributeParallelForDirective, 2921 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2922 2923DEF_TRAVERSE_STMT(OMPTargetTeamsDirective, 2924 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2925 2926DEF_TRAVERSE_STMT(OMPTargetTeamsDistributeDirective, 2927 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2928 2929DEF_TRAVERSE_STMT(OMPTargetTeamsDistributeParallelForDirective, 2930 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2931 2932DEF_TRAVERSE_STMT(OMPTargetTeamsDistributeParallelForSimdDirective, 2933 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2934 2935DEF_TRAVERSE_STMT(OMPTargetTeamsDistributeSimdDirective, 2936 { TRY_TO(TraverseOMPExecutableDirective(S)); }) 2937 2938// OpenMP clauses. 2939template <typename Derived> 2940bool RecursiveASTVisitor<Derived>::TraverseOMPClause(OMPClause *C) { 2941 if (!C) 2942 return true; 2943 switch (C->getClauseKind()) { 2944#define OPENMP_CLAUSE(Name, Class) \ 2945 case OMPC_##Name: \ 2946 TRY_TO(Visit##Class(static_cast<Class *>(C))); \ 2947 break; 2948#include "clang/Basic/OpenMPKinds.def" 2949 case OMPC_threadprivate: 2950 case OMPC_uniform: 2951 case OMPC_device_type: 2952 case OMPC_match: 2953 case OMPC_unknown: 2954 break; 2955 } 2956 return true; 2957} 2958 2959template <typename Derived> 2960bool RecursiveASTVisitor<Derived>::VisitOMPClauseWithPreInit( 2961 OMPClauseWithPreInit *Node) { 2962 TRY_TO(TraverseStmt(Node->getPreInitStmt())); 2963 return true; 2964} 2965 2966template <typename Derived> 2967bool RecursiveASTVisitor<Derived>::VisitOMPClauseWithPostUpdate( 2968 OMPClauseWithPostUpdate *Node) { 2969 TRY_TO(VisitOMPClauseWithPreInit(Node)); 2970 TRY_TO(TraverseStmt(Node->getPostUpdateExpr())); 2971 return true; 2972} 2973 2974template <typename Derived> 2975bool RecursiveASTVisitor<Derived>::VisitOMPAllocatorClause( 2976 OMPAllocatorClause *C) { 2977 TRY_TO(TraverseStmt(C->getAllocator())); 2978 return true; 2979} 2980 2981template <typename Derived> 2982bool RecursiveASTVisitor<Derived>::VisitOMPAllocateClause(OMPAllocateClause *C) { 2983 TRY_TO(TraverseStmt(C->getAllocator())); 2984 TRY_TO(VisitOMPClauseList(C)); 2985 return true; 2986} 2987 2988template <typename Derived> 2989bool RecursiveASTVisitor<Derived>::VisitOMPIfClause(OMPIfClause *C) { 2990 TRY_TO(VisitOMPClauseWithPreInit(C)); 2991 TRY_TO(TraverseStmt(C->getCondition())); 2992 return true; 2993} 2994 2995template <typename Derived> 2996bool RecursiveASTVisitor<Derived>::VisitOMPFinalClause(OMPFinalClause *C) { 2997 TRY_TO(VisitOMPClauseWithPreInit(C)); 2998 TRY_TO(TraverseStmt(C->getCondition())); 2999 return true; 3000} 3001 3002template <typename Derived> 3003bool 3004RecursiveASTVisitor<Derived>::VisitOMPNumThreadsClause(OMPNumThreadsClause *C) { 3005 TRY_TO(VisitOMPClauseWithPreInit(C)); 3006 TRY_TO(TraverseStmt(C->getNumThreads())); 3007 return true; 3008} 3009 3010template <typename Derived> 3011bool RecursiveASTVisitor<Derived>::VisitOMPSafelenClause(OMPSafelenClause *C) { 3012 TRY_TO(TraverseStmt(C->getSafelen())); 3013 return true; 3014} 3015 3016template <typename Derived> 3017bool RecursiveASTVisitor<Derived>::VisitOMPSimdlenClause(OMPSimdlenClause *C) { 3018 TRY_TO(TraverseStmt(C->getSimdlen())); 3019 return true; 3020} 3021 3022template <typename Derived> 3023bool 3024RecursiveASTVisitor<Derived>::VisitOMPCollapseClause(OMPCollapseClause *C) { 3025 TRY_TO(TraverseStmt(C->getNumForLoops())); 3026 return true; 3027} 3028 3029template <typename Derived> 3030bool RecursiveASTVisitor<Derived>::VisitOMPDefaultClause(OMPDefaultClause *) { 3031 return true; 3032} 3033 3034template <typename Derived> 3035bool RecursiveASTVisitor<Derived>::VisitOMPProcBindClause(OMPProcBindClause *) { 3036 return true; 3037} 3038 3039template <typename Derived> 3040bool RecursiveASTVisitor<Derived>::VisitOMPUnifiedAddressClause( 3041 OMPUnifiedAddressClause *) { 3042 return true; 3043} 3044 3045template <typename Derived> 3046bool RecursiveASTVisitor<Derived>::VisitOMPUnifiedSharedMemoryClause( 3047 OMPUnifiedSharedMemoryClause *) { 3048 return true; 3049} 3050 3051template <typename Derived> 3052bool RecursiveASTVisitor<Derived>::VisitOMPReverseOffloadClause( 3053 OMPReverseOffloadClause *) { 3054 return true; 3055} 3056 3057template <typename Derived> 3058bool RecursiveASTVisitor<Derived>::VisitOMPDynamicAllocatorsClause( 3059 OMPDynamicAllocatorsClause *) { 3060 return true; 3061} 3062 3063template <typename Derived> 3064bool RecursiveASTVisitor<Derived>::VisitOMPAtomicDefaultMemOrderClause( 3065 OMPAtomicDefaultMemOrderClause *) { 3066 return true; 3067} 3068 3069template <typename Derived> 3070bool 3071RecursiveASTVisitor<Derived>::VisitOMPScheduleClause(OMPScheduleClause *C) { 3072 TRY_TO(VisitOMPClauseWithPreInit(C)); 3073 TRY_TO(TraverseStmt(C->getChunkSize())); 3074 return true; 3075} 3076 3077template <typename Derived> 3078bool RecursiveASTVisitor<Derived>::VisitOMPOrderedClause(OMPOrderedClause *C) { 3079 TRY_TO(TraverseStmt(C->getNumForLoops())); 3080 return true; 3081} 3082 3083template <typename Derived> 3084bool RecursiveASTVisitor<Derived>::VisitOMPNowaitClause(OMPNowaitClause *) { 3085 return true; 3086} 3087 3088template <typename Derived> 3089bool RecursiveASTVisitor<Derived>::VisitOMPUntiedClause(OMPUntiedClause *) { 3090 return true; 3091} 3092 3093template <typename Derived> 3094bool 3095RecursiveASTVisitor<Derived>::VisitOMPMergeableClause(OMPMergeableClause *) { 3096 return true; 3097} 3098 3099template <typename Derived> 3100bool RecursiveASTVisitor<Derived>::VisitOMPReadClause(OMPReadClause *) { 3101 return true; 3102} 3103 3104template <typename Derived> 3105bool RecursiveASTVisitor<Derived>::VisitOMPWriteClause(OMPWriteClause *) { 3106 return true; 3107} 3108 3109template <typename Derived> 3110bool RecursiveASTVisitor<Derived>::VisitOMPUpdateClause(OMPUpdateClause *) { 3111 return true; 3112} 3113 3114template <typename Derived> 3115bool RecursiveASTVisitor<Derived>::VisitOMPCaptureClause(OMPCaptureClause *) { 3116 return true; 3117} 3118 3119template <typename Derived> 3120bool RecursiveASTVisitor<Derived>::VisitOMPSeqCstClause(OMPSeqCstClause *) { 3121 return true; 3122} 3123 3124template <typename Derived> 3125bool RecursiveASTVisitor<Derived>::VisitOMPThreadsClause(OMPThreadsClause *) { 3126 return true; 3127} 3128 3129template <typename Derived> 3130bool RecursiveASTVisitor<Derived>::VisitOMPSIMDClause(OMPSIMDClause *) { 3131 return true; 3132} 3133 3134template <typename Derived> 3135bool RecursiveASTVisitor<Derived>::VisitOMPNogroupClause(OMPNogroupClause *) { 3136 return true; 3137} 3138 3139template <typename Derived> 3140template <typename T> 3141bool RecursiveASTVisitor<Derived>::VisitOMPClauseList(T *Node) { 3142 for (auto *E : Node->varlists()) { 3143 TRY_TO(TraverseStmt(E)); 3144 } 3145 return true; 3146} 3147 3148template <typename Derived> 3149bool RecursiveASTVisitor<Derived>::VisitOMPPrivateClause(OMPPrivateClause *C) { 3150 TRY_TO(VisitOMPClauseList(C)); 3151 for (auto *E : C->private_copies()) { 3152 TRY_TO(TraverseStmt(E)); 3153 } 3154 return true; 3155} 3156 3157template <typename Derived> 3158bool RecursiveASTVisitor<Derived>::VisitOMPFirstprivateClause( 3159 OMPFirstprivateClause *C) { 3160 TRY_TO(VisitOMPClauseList(C)); 3161 TRY_TO(VisitOMPClauseWithPreInit(C)); 3162 for (auto *E : C->private_copies()) { 3163 TRY_TO(TraverseStmt(E)); 3164 } 3165 for (auto *E : C->inits()) { 3166 TRY_TO(TraverseStmt(E)); 3167 } 3168 return true; 3169} 3170 3171template <typename Derived> 3172bool RecursiveASTVisitor<Derived>::VisitOMPLastprivateClause( 3173 OMPLastprivateClause *C) { 3174 TRY_TO(VisitOMPClauseList(C)); 3175 TRY_TO(VisitOMPClauseWithPostUpdate(C)); 3176 for (auto *E : C->private_copies()) { 3177 TRY_TO(TraverseStmt(E)); 3178 } 3179 for (auto *E : C->source_exprs()) { 3180 TRY_TO(TraverseStmt(E)); 3181 } 3182 for (auto *E : C->destination_exprs()) { 3183 TRY_TO(TraverseStmt(E)); 3184 } 3185 for (auto *E : C->assignment_ops()) { 3186 TRY_TO(TraverseStmt(E)); 3187 } 3188 return true; 3189} 3190 3191template <typename Derived> 3192bool RecursiveASTVisitor<Derived>::VisitOMPSharedClause(OMPSharedClause *C) { 3193 TRY_TO(VisitOMPClauseList(C)); 3194 return true; 3195} 3196 3197template <typename Derived> 3198bool RecursiveASTVisitor<Derived>::VisitOMPLinearClause(OMPLinearClause *C) { 3199 TRY_TO(TraverseStmt(C->getStep())); 3200 TRY_TO(TraverseStmt(C->getCalcStep())); 3201 TRY_TO(VisitOMPClauseList(C)); 3202 TRY_TO(VisitOMPClauseWithPostUpdate(C)); 3203 for (auto *E : C->privates()) { 3204 TRY_TO(TraverseStmt(E)); 3205 } 3206 for (auto *E : C->inits()) { 3207 TRY_TO(TraverseStmt(E)); 3208 } 3209 for (auto *E : C->updates()) { 3210 TRY_TO(TraverseStmt(E)); 3211 } 3212 for (auto *E : C->finals()) { 3213 TRY_TO(TraverseStmt(E)); 3214 } 3215 return true; 3216} 3217 3218template <typename Derived> 3219bool RecursiveASTVisitor<Derived>::VisitOMPAlignedClause(OMPAlignedClause *C) { 3220 TRY_TO(TraverseStmt(C->getAlignment())); 3221 TRY_TO(VisitOMPClauseList(C)); 3222 return true; 3223} 3224 3225template <typename Derived> 3226bool RecursiveASTVisitor<Derived>::VisitOMPCopyinClause(OMPCopyinClause *C) { 3227 TRY_TO(VisitOMPClauseList(C)); 3228 for (auto *E : C->source_exprs()) { 3229 TRY_TO(TraverseStmt(E)); 3230 } 3231 for (auto *E : C->destination_exprs()) { 3232 TRY_TO(TraverseStmt(E)); 3233 } 3234 for (auto *E : C->assignment_ops()) { 3235 TRY_TO(TraverseStmt(E)); 3236 } 3237 return true; 3238} 3239 3240template <typename Derived> 3241bool RecursiveASTVisitor<Derived>::VisitOMPCopyprivateClause( 3242 OMPCopyprivateClause *C) { 3243 TRY_TO(VisitOMPClauseList(C)); 3244 for (auto *E : C->source_exprs()) { 3245 TRY_TO(TraverseStmt(E)); 3246 } 3247 for (auto *E : C->destination_exprs()) { 3248 TRY_TO(TraverseStmt(E)); 3249 } 3250 for (auto *E : C->assignment_ops()) { 3251 TRY_TO(TraverseStmt(E)); 3252 } 3253 return true; 3254} 3255 3256template <typename Derived> 3257bool 3258RecursiveASTVisitor<Derived>::VisitOMPReductionClause(OMPReductionClause *C) { 3259 TRY_TO(TraverseNestedNameSpecifierLoc(C->getQualifierLoc())); 3260 TRY_TO(TraverseDeclarationNameInfo(C->getNameInfo())); 3261 TRY_TO(VisitOMPClauseList(C)); 3262 TRY_TO(VisitOMPClauseWithPostUpdate(C)); 3263 for (auto *E : C->privates()) { 3264 TRY_TO(TraverseStmt(E)); 3265 } 3266 for (auto *E : C->lhs_exprs()) { 3267 TRY_TO(TraverseStmt(E)); 3268 } 3269 for (auto *E : C->rhs_exprs()) { 3270 TRY_TO(TraverseStmt(E)); 3271 } 3272 for (auto *E : C->reduction_ops()) { 3273 TRY_TO(TraverseStmt(E)); 3274 } 3275 return true; 3276} 3277 3278template <typename Derived> 3279bool RecursiveASTVisitor<Derived>::VisitOMPTaskReductionClause( 3280 OMPTaskReductionClause *C) { 3281 TRY_TO(TraverseNestedNameSpecifierLoc(C->getQualifierLoc())); 3282 TRY_TO(TraverseDeclarationNameInfo(C->getNameInfo())); 3283 TRY_TO(VisitOMPClauseList(C)); 3284 TRY_TO(VisitOMPClauseWithPostUpdate(C)); 3285 for (auto *E : C->privates()) { 3286 TRY_TO(TraverseStmt(E)); 3287 } 3288 for (auto *E : C->lhs_exprs()) { 3289 TRY_TO(TraverseStmt(E)); 3290 } 3291 for (auto *E : C->rhs_exprs()) { 3292 TRY_TO(TraverseStmt(E)); 3293 } 3294 for (auto *E : C->reduction_ops()) { 3295 TRY_TO(TraverseStmt(E)); 3296 } 3297 return true; 3298} 3299 3300template <typename Derived> 3301bool RecursiveASTVisitor<Derived>::VisitOMPInReductionClause( 3302 OMPInReductionClause *C) { 3303 TRY_TO(TraverseNestedNameSpecifierLoc(C->getQualifierLoc())); 3304 TRY_TO(TraverseDeclarationNameInfo(C->getNameInfo())); 3305 TRY_TO(VisitOMPClauseList(C)); 3306 TRY_TO(VisitOMPClauseWithPostUpdate(C)); 3307 for (auto *E : C->privates()) { 3308 TRY_TO(TraverseStmt(E)); 3309 } 3310 for (auto *E : C->lhs_exprs()) { 3311 TRY_TO(TraverseStmt(E)); 3312 } 3313 for (auto *E : C->rhs_exprs()) { 3314 TRY_TO(TraverseStmt(E)); 3315 } 3316 for (auto *E : C->reduction_ops()) { 3317 TRY_TO(TraverseStmt(E)); 3318 } 3319 for (auto *E : C->taskgroup_descriptors()) 3320 TRY_TO(TraverseStmt(E)); 3321 return true; 3322} 3323 3324template <typename Derived> 3325bool RecursiveASTVisitor<Derived>::VisitOMPFlushClause(OMPFlushClause *C) { 3326 TRY_TO(VisitOMPClauseList(C)); 3327 return true; 3328} 3329 3330template <typename Derived> 3331bool RecursiveASTVisitor<Derived>::VisitOMPDependClause(OMPDependClause *C) { 3332 TRY_TO(VisitOMPClauseList(C)); 3333 return true; 3334} 3335 3336template <typename Derived> 3337bool RecursiveASTVisitor<Derived>::VisitOMPDeviceClause(OMPDeviceClause *C) { 3338 TRY_TO(VisitOMPClauseWithPreInit(C)); 3339 TRY_TO(TraverseStmt(C->getDevice())); 3340 return true; 3341} 3342 3343template <typename Derived> 3344bool RecursiveASTVisitor<Derived>::VisitOMPMapClause(OMPMapClause *C) { 3345 TRY_TO(VisitOMPClauseList(C)); 3346 return true; 3347} 3348 3349template <typename Derived> 3350bool RecursiveASTVisitor<Derived>::VisitOMPNumTeamsClause( 3351 OMPNumTeamsClause *C) { 3352 TRY_TO(VisitOMPClauseWithPreInit(C)); 3353 TRY_TO(TraverseStmt(C->getNumTeams())); 3354 return true; 3355} 3356 3357template <typename Derived> 3358bool RecursiveASTVisitor<Derived>::VisitOMPThreadLimitClause( 3359 OMPThreadLimitClause *C) { 3360 TRY_TO(VisitOMPClauseWithPreInit(C)); 3361 TRY_TO(TraverseStmt(C->getThreadLimit())); 3362 return true; 3363} 3364 3365template <typename Derived> 3366bool RecursiveASTVisitor<Derived>::VisitOMPPriorityClause( 3367 OMPPriorityClause *C) { 3368 TRY_TO(VisitOMPClauseWithPreInit(C)); 3369 TRY_TO(TraverseStmt(C->getPriority())); 3370 return true; 3371} 3372 3373template <typename Derived> 3374bool RecursiveASTVisitor<Derived>::VisitOMPGrainsizeClause( 3375 OMPGrainsizeClause *C) { 3376 TRY_TO(VisitOMPClauseWithPreInit(C)); 3377 TRY_TO(TraverseStmt(C->getGrainsize())); 3378 return true; 3379} 3380 3381template <typename Derived> 3382bool RecursiveASTVisitor<Derived>::VisitOMPNumTasksClause( 3383 OMPNumTasksClause *C) { 3384 TRY_TO(VisitOMPClauseWithPreInit(C)); 3385 TRY_TO(TraverseStmt(C->getNumTasks())); 3386 return true; 3387} 3388 3389template <typename Derived> 3390bool RecursiveASTVisitor<Derived>::VisitOMPHintClause(OMPHintClause *C) { 3391 TRY_TO(TraverseStmt(C->getHint())); 3392 return true; 3393} 3394 3395template <typename Derived> 3396bool RecursiveASTVisitor<Derived>::VisitOMPDistScheduleClause( 3397 OMPDistScheduleClause *C) { 3398 TRY_TO(VisitOMPClauseWithPreInit(C)); 3399 TRY_TO(TraverseStmt(C->getChunkSize())); 3400 return true; 3401} 3402 3403template <typename Derived> 3404bool 3405RecursiveASTVisitor<Derived>::VisitOMPDefaultmapClause(OMPDefaultmapClause *C) { 3406 return true; 3407} 3408 3409template <typename Derived> 3410bool RecursiveASTVisitor<Derived>::VisitOMPToClause(OMPToClause *C) { 3411 TRY_TO(VisitOMPClauseList(C)); 3412 return true; 3413} 3414 3415template <typename Derived> 3416bool RecursiveASTVisitor<Derived>::VisitOMPFromClause(OMPFromClause *C) { 3417 TRY_TO(VisitOMPClauseList(C)); 3418 return true; 3419} 3420 3421template <typename Derived> 3422bool RecursiveASTVisitor<Derived>::VisitOMPUseDevicePtrClause( 3423 OMPUseDevicePtrClause *C) { 3424 TRY_TO(VisitOMPClauseList(C)); 3425 return true; 3426} 3427 3428template <typename Derived> 3429bool RecursiveASTVisitor<Derived>::VisitOMPIsDevicePtrClause( 3430 OMPIsDevicePtrClause *C) { 3431 TRY_TO(VisitOMPClauseList(C)); 3432 return true; 3433} 3434 3435template <typename Derived> 3436bool RecursiveASTVisitor<Derived>::VisitOMPNontemporalClause( 3437 OMPNontemporalClause *C) { 3438 TRY_TO(VisitOMPClauseList(C)); 3439 for (auto *E : C->private_refs()) { 3440 TRY_TO(TraverseStmt(E)); 3441 } 3442 return true; 3443} 3444 3445// FIXME: look at the following tricky-seeming exprs to see if we 3446// need to recurse on anything. These are ones that have methods 3447// returning decls or qualtypes or nestednamespecifier -- though I'm 3448// not sure if they own them -- or just seemed very complicated, or 3449// had lots of sub-types to explore. 3450// 3451// VisitOverloadExpr and its children: recurse on template args? etc? 3452 3453// FIXME: go through all the stmts and exprs again, and see which of them 3454// create new types, and recurse on the types (TypeLocs?) of those. 3455// Candidates: 3456// 3457// http://clang.llvm.org/doxygen/classclang_1_1CXXTypeidExpr.html 3458// http://clang.llvm.org/doxygen/classclang_1_1UnaryExprOrTypeTraitExpr.html 3459// http://clang.llvm.org/doxygen/classclang_1_1TypesCompatibleExpr.html 3460// Every class that has getQualifier. 3461 3462#undef DEF_TRAVERSE_STMT 3463#undef TRAVERSE_STMT 3464#undef TRAVERSE_STMT_BASE 3465 3466#undef TRY_TO 3467 3468} // end namespace clang 3469 3470#endif // LLVM_CLANG_AST_RECURSIVEASTVISITOR_H 3471