DeclPrinter.cpp revision 200583
11592Srgrimes//===--- DeclPrinter.cpp - Printing implementation for Decl ASTs ----------===// 21592Srgrimes// 31592Srgrimes// The LLVM Compiler Infrastructure 41592Srgrimes// 51592Srgrimes// This file is distributed under the University of Illinois Open Source 61592Srgrimes// License. See LICENSE.TXT for details. 71592Srgrimes// 81592Srgrimes//===----------------------------------------------------------------------===// 91592Srgrimes// 101592Srgrimes// This file implements the Decl::dump method, which pretty print the 111592Srgrimes// AST back out to C/Objective-C/C++/Objective-C++ code. 121592Srgrimes// 131592Srgrimes//===----------------------------------------------------------------------===// 141592Srgrimes#include "clang/AST/ASTContext.h" 151592Srgrimes#include "clang/AST/DeclVisitor.h" 161592Srgrimes#include "clang/AST/Decl.h" 171592Srgrimes#include "clang/AST/DeclCXX.h" 181592Srgrimes#include "clang/AST/DeclObjC.h" 191592Srgrimes#include "clang/AST/Expr.h" 201592Srgrimes#include "clang/AST/PrettyPrinter.h" 211592Srgrimes#include "llvm/Support/raw_ostream.h" 221592Srgrimesusing namespace clang; 231592Srgrimes 241592Srgrimesnamespace { 251592Srgrimes class DeclPrinter : public DeclVisitor<DeclPrinter> { 261592Srgrimes llvm::raw_ostream &Out; 271592Srgrimes ASTContext &Context; 281592Srgrimes PrintingPolicy Policy; 291592Srgrimes unsigned Indentation; 301592Srgrimes 311592Srgrimes llvm::raw_ostream& Indent() { return Indent(Indentation); } 321592Srgrimes llvm::raw_ostream& Indent(unsigned Indentation); 331592Srgrimes void ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls); 341592Srgrimes 351592Srgrimes void Print(AccessSpecifier AS); 361592Srgrimes 371592Srgrimes public: 381592Srgrimes DeclPrinter(llvm::raw_ostream &Out, ASTContext &Context, 391592Srgrimes const PrintingPolicy &Policy, 401592Srgrimes unsigned Indentation = 0) 411592Srgrimes : Out(Out), Context(Context), Policy(Policy), Indentation(Indentation) { } 421592Srgrimes 431592Srgrimes void VisitDeclContext(DeclContext *DC, bool Indent = true); 441592Srgrimes 451592Srgrimes void VisitTranslationUnitDecl(TranslationUnitDecl *D); 461592Srgrimes void VisitTypedefDecl(TypedefDecl *D); 471592Srgrimes void VisitEnumDecl(EnumDecl *D); 481592Srgrimes void VisitRecordDecl(RecordDecl *D); 491592Srgrimes void VisitEnumConstantDecl(EnumConstantDecl *D); 501592Srgrimes void VisitFunctionDecl(FunctionDecl *D); 511592Srgrimes void VisitFieldDecl(FieldDecl *D); 521592Srgrimes void VisitVarDecl(VarDecl *D); 531592Srgrimes void VisitParmVarDecl(ParmVarDecl *D); 541592Srgrimes void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 551592Srgrimes void VisitNamespaceDecl(NamespaceDecl *D); 561592Srgrimes void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 571592Srgrimes void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 581592Srgrimes void VisitCXXRecordDecl(CXXRecordDecl *D); 591592Srgrimes void VisitLinkageSpecDecl(LinkageSpecDecl *D); 601592Srgrimes void VisitTemplateDecl(TemplateDecl *D); 611592Srgrimes void VisitObjCMethodDecl(ObjCMethodDecl *D); 621592Srgrimes void VisitObjCClassDecl(ObjCClassDecl *D); 631592Srgrimes void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 641592Srgrimes void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 651592Srgrimes void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); 661592Srgrimes void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 671592Srgrimes void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 681592Srgrimes void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 691592Srgrimes void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 701592Srgrimes void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 711592Srgrimes void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 721592Srgrimes void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 731592Srgrimes void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 741592Srgrimes void VisitUsingDecl(UsingDecl *D); 751592Srgrimes void VisitUsingShadowDecl(UsingShadowDecl *D); 761592Srgrimes }; 771592Srgrimes} 781592Srgrimes 791592Srgrimesvoid Decl::print(llvm::raw_ostream &Out, unsigned Indentation) const { 801592Srgrimes print(Out, getASTContext().PrintingPolicy, Indentation); 811592Srgrimes} 821592Srgrimes 831592Srgrimesvoid Decl::print(llvm::raw_ostream &Out, const PrintingPolicy &Policy, 841592Srgrimes unsigned Indentation) const { 851592Srgrimes DeclPrinter Printer(Out, getASTContext(), Policy, Indentation); 861592Srgrimes Printer.Visit(const_cast<Decl*>(this)); 871592Srgrimes} 881592Srgrimes 891592Srgrimesstatic QualType GetBaseType(QualType T) { 901592Srgrimes // FIXME: This should be on the Type class! 911592Srgrimes QualType BaseType = T; 921592Srgrimes while (!BaseType->isSpecifierType()) { 931592Srgrimes if (isa<TypedefType>(BaseType)) 941592Srgrimes break; 951592Srgrimes else if (const PointerType* PTy = BaseType->getAs<PointerType>()) 961592Srgrimes BaseType = PTy->getPointeeType(); 971592Srgrimes else if (const ArrayType* ATy = dyn_cast<ArrayType>(BaseType)) 981592Srgrimes BaseType = ATy->getElementType(); 991592Srgrimes else if (const FunctionType* FTy = BaseType->getAs<FunctionType>()) 1001592Srgrimes BaseType = FTy->getResultType(); 1011592Srgrimes else if (const VectorType *VTy = BaseType->getAs<VectorType>()) 1021592Srgrimes BaseType = VTy->getElementType(); 1031592Srgrimes else 1041592Srgrimes assert(0 && "Unknown declarator!"); 1051592Srgrimes } 1061592Srgrimes return BaseType; 1071592Srgrimes} 1081592Srgrimes 1091592Srgrimesstatic QualType getDeclType(Decl* D) { 1101592Srgrimes if (TypedefDecl* TDD = dyn_cast<TypedefDecl>(D)) 1111592Srgrimes return TDD->getUnderlyingType(); 1121592Srgrimes if (ValueDecl* VD = dyn_cast<ValueDecl>(D)) 1131592Srgrimes return VD->getType(); 1141592Srgrimes return QualType(); 1151592Srgrimes} 1161592Srgrimes 1171592Srgrimesvoid Decl::printGroup(Decl** Begin, unsigned NumDecls, 1181592Srgrimes llvm::raw_ostream &Out, const PrintingPolicy &Policy, 1191592Srgrimes unsigned Indentation) { 1201592Srgrimes if (NumDecls == 1) { 1211592Srgrimes (*Begin)->print(Out, Policy, Indentation); 1221592Srgrimes return; 1231592Srgrimes } 1241592Srgrimes 1251592Srgrimes Decl** End = Begin + NumDecls; 1261592Srgrimes TagDecl* TD = dyn_cast<TagDecl>(*Begin); 1271592Srgrimes if (TD) 128 ++Begin; 129 130 PrintingPolicy SubPolicy(Policy); 131 if (TD && TD->isDefinition()) { 132 TD->print(Out, Policy, Indentation); 133 Out << " "; 134 SubPolicy.SuppressTag = true; 135 } 136 137 bool isFirst = true; 138 for ( ; Begin != End; ++Begin) { 139 if (isFirst) { 140 SubPolicy.SuppressSpecifiers = false; 141 isFirst = false; 142 } else { 143 if (!isFirst) Out << ", "; 144 SubPolicy.SuppressSpecifiers = true; 145 } 146 147 (*Begin)->print(Out, SubPolicy, Indentation); 148 } 149} 150 151void DeclContext::dumpDeclContext() const { 152 // Get the translation unit 153 const DeclContext *DC = this; 154 while (!DC->isTranslationUnit()) 155 DC = DC->getParent(); 156 157 ASTContext &Ctx = cast<TranslationUnitDecl>(DC)->getASTContext(); 158 DeclPrinter Printer(llvm::errs(), Ctx, Ctx.PrintingPolicy, 0); 159 Printer.VisitDeclContext(const_cast<DeclContext *>(this), /*Indent=*/false); 160} 161 162void Decl::dump() const { 163 print(llvm::errs()); 164} 165 166llvm::raw_ostream& DeclPrinter::Indent(unsigned Indentation) { 167 for (unsigned i = 0; i != Indentation; ++i) 168 Out << " "; 169 return Out; 170} 171 172void DeclPrinter::ProcessDeclGroup(llvm::SmallVectorImpl<Decl*>& Decls) { 173 this->Indent(); 174 Decl::printGroup(Decls.data(), Decls.size(), Out, Policy, Indentation); 175 Out << ";\n"; 176 Decls.clear(); 177 178} 179 180void DeclPrinter::Print(AccessSpecifier AS) { 181 switch(AS) { 182 case AS_none: assert(0 && "No access specifier!"); break; 183 case AS_public: Out << "public"; break; 184 case AS_protected: Out << "protected"; break; 185 case AS_private: Out << " private"; break; 186 } 187} 188 189//---------------------------------------------------------------------------- 190// Common C declarations 191//---------------------------------------------------------------------------- 192 193void DeclPrinter::VisitDeclContext(DeclContext *DC, bool Indent) { 194 if (Indent) 195 Indentation += Policy.Indentation; 196 197 bool PrintAccess = isa<CXXRecordDecl>(DC); 198 AccessSpecifier CurAS = AS_none; 199 200 llvm::SmallVector<Decl*, 2> Decls; 201 for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end(); 202 D != DEnd; ++D) { 203 if (!Policy.Dump) { 204 // Skip over implicit declarations in pretty-printing mode. 205 if (D->isImplicit()) continue; 206 // FIXME: Ugly hack so we don't pretty-print the builtin declaration 207 // of __builtin_va_list. There should be some other way to check that. 208 if (isa<NamedDecl>(*D) && cast<NamedDecl>(*D)->getNameAsString() == 209 "__builtin_va_list") 210 continue; 211 } 212 213 if (PrintAccess) { 214 AccessSpecifier AS = D->getAccess(); 215 216 if (AS != CurAS) { 217 if (Indent) 218 this->Indent(Indentation - Policy.Indentation); 219 Print(AS); 220 Out << ":\n"; 221 CurAS = AS; 222 } 223 } 224 225 // The next bits of code handles stuff like "struct {int x;} a,b"; we're 226 // forced to merge the declarations because there's no other way to 227 // refer to the struct in question. This limited merging is safe without 228 // a bunch of other checks because it only merges declarations directly 229 // referring to the tag, not typedefs. 230 // 231 // Check whether the current declaration should be grouped with a previous 232 // unnamed struct. 233 QualType CurDeclType = getDeclType(*D); 234 if (!Decls.empty() && !CurDeclType.isNull()) { 235 QualType BaseType = GetBaseType(CurDeclType); 236 if (!BaseType.isNull() && isa<TagType>(BaseType) && 237 cast<TagType>(BaseType)->getDecl() == Decls[0]) { 238 Decls.push_back(*D); 239 continue; 240 } 241 } 242 243 // If we have a merged group waiting to be handled, handle it now. 244 if (!Decls.empty()) 245 ProcessDeclGroup(Decls); 246 247 // If the current declaration is an unnamed tag type, save it 248 // so we can merge it with the subsequent declaration(s) using it. 249 if (isa<TagDecl>(*D) && !cast<TagDecl>(*D)->getIdentifier()) { 250 Decls.push_back(*D); 251 continue; 252 } 253 this->Indent(); 254 Visit(*D); 255 256 // FIXME: Need to be able to tell the DeclPrinter when 257 const char *Terminator = 0; 258 if (isa<FunctionDecl>(*D) && 259 cast<FunctionDecl>(*D)->isThisDeclarationADefinition()) 260 Terminator = 0; 261 else if (isa<ObjCMethodDecl>(*D) && cast<ObjCMethodDecl>(*D)->getBody()) 262 Terminator = 0; 263 else if (isa<NamespaceDecl>(*D) || isa<LinkageSpecDecl>(*D) || 264 isa<ObjCImplementationDecl>(*D) || 265 isa<ObjCInterfaceDecl>(*D) || 266 isa<ObjCProtocolDecl>(*D) || 267 isa<ObjCCategoryImplDecl>(*D) || 268 isa<ObjCCategoryDecl>(*D)) 269 Terminator = 0; 270 else if (isa<EnumConstantDecl>(*D)) { 271 DeclContext::decl_iterator Next = D; 272 ++Next; 273 if (Next != DEnd) 274 Terminator = ","; 275 } else 276 Terminator = ";"; 277 278 if (Terminator) 279 Out << Terminator; 280 Out << "\n"; 281 } 282 283 if (!Decls.empty()) 284 ProcessDeclGroup(Decls); 285 286 if (Indent) 287 Indentation -= Policy.Indentation; 288} 289 290void DeclPrinter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 291 VisitDeclContext(D, false); 292} 293 294void DeclPrinter::VisitTypedefDecl(TypedefDecl *D) { 295 std::string S = D->getNameAsString(); 296 D->getUnderlyingType().getAsStringInternal(S, Policy); 297 if (!Policy.SuppressSpecifiers) 298 Out << "typedef "; 299 Out << S; 300} 301 302void DeclPrinter::VisitEnumDecl(EnumDecl *D) { 303 Out << "enum " << D->getNameAsString() << " {\n"; 304 VisitDeclContext(D); 305 Indent() << "}"; 306} 307 308void DeclPrinter::VisitRecordDecl(RecordDecl *D) { 309 Out << D->getKindName(); 310 if (D->getIdentifier()) { 311 Out << " "; 312 Out << D->getNameAsString(); 313 } 314 315 if (D->isDefinition()) { 316 Out << " {\n"; 317 VisitDeclContext(D); 318 Indent() << "}"; 319 } 320} 321 322void DeclPrinter::VisitEnumConstantDecl(EnumConstantDecl *D) { 323 Out << D->getNameAsString(); 324 if (Expr *Init = D->getInitExpr()) { 325 Out << " = "; 326 Init->printPretty(Out, Context, 0, Policy, Indentation); 327 } 328} 329 330void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) { 331 if (!Policy.SuppressSpecifiers) { 332 switch (D->getStorageClass()) { 333 case FunctionDecl::None: break; 334 case FunctionDecl::Extern: Out << "extern "; break; 335 case FunctionDecl::Static: Out << "static "; break; 336 case FunctionDecl::PrivateExtern: Out << "__private_extern__ "; break; 337 } 338 339 if (D->isInlineSpecified()) Out << "inline "; 340 if (D->isVirtualAsWritten()) Out << "virtual "; 341 } 342 343 PrintingPolicy SubPolicy(Policy); 344 SubPolicy.SuppressSpecifiers = false; 345 std::string Proto = D->getNameAsString(); 346 if (isa<FunctionType>(D->getType().getTypePtr())) { 347 const FunctionType *AFT = D->getType()->getAs<FunctionType>(); 348 349 const FunctionProtoType *FT = 0; 350 if (D->hasWrittenPrototype()) 351 FT = dyn_cast<FunctionProtoType>(AFT); 352 353 Proto += "("; 354 if (FT) { 355 llvm::raw_string_ostream POut(Proto); 356 DeclPrinter ParamPrinter(POut, Context, SubPolicy, Indentation); 357 for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) { 358 if (i) POut << ", "; 359 ParamPrinter.VisitParmVarDecl(D->getParamDecl(i)); 360 } 361 362 if (FT->isVariadic()) { 363 if (D->getNumParams()) POut << ", "; 364 POut << "..."; 365 } 366 } else if (D->isThisDeclarationADefinition() && !D->hasPrototype()) { 367 for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) { 368 if (i) 369 Proto += ", "; 370 Proto += D->getParamDecl(i)->getNameAsString(); 371 } 372 } 373 374 Proto += ")"; 375 376 if (FT && FT->hasExceptionSpec()) { 377 Proto += " throw("; 378 if (FT->hasAnyExceptionSpec()) 379 Proto += "..."; 380 else 381 for (unsigned I = 0, N = FT->getNumExceptions(); I != N; ++I) { 382 if (I) 383 Proto += ", "; 384 385 386 std::string ExceptionType; 387 FT->getExceptionType(I).getAsStringInternal(ExceptionType, SubPolicy); 388 Proto += ExceptionType; 389 } 390 Proto += ")"; 391 } 392 393 if (D->hasAttr<NoReturnAttr>()) 394 Proto += " __attribute((noreturn))"; 395 if (CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D)) { 396 if (CDecl->getNumBaseOrMemberInitializers() > 0) { 397 Proto += " : "; 398 Out << Proto; 399 Proto.clear(); 400 for (CXXConstructorDecl::init_const_iterator B = CDecl->init_begin(), 401 E = CDecl->init_end(); 402 B != E; ++B) { 403 CXXBaseOrMemberInitializer * BMInitializer = (*B); 404 if (B != CDecl->init_begin()) 405 Out << ", "; 406 bool hasArguments = (BMInitializer->arg_begin() != 407 BMInitializer->arg_end()); 408 if (BMInitializer->isMemberInitializer()) { 409 FieldDecl *FD = BMInitializer->getMember(); 410 Out << FD->getNameAsString(); 411 } 412 else // FIXME. skip dependent types for now. 413 if (const RecordType *RT = 414 BMInitializer->getBaseClass()->getAs<RecordType>()) { 415 const CXXRecordDecl *BaseDecl = 416 cast<CXXRecordDecl>(RT->getDecl()); 417 Out << BaseDecl->getNameAsString(); 418 } 419 if (hasArguments) { 420 Out << "("; 421 for (CXXBaseOrMemberInitializer::const_arg_iterator BE = 422 BMInitializer->const_arg_begin(), 423 EE = BMInitializer->const_arg_end(); BE != EE; ++BE) { 424 if (BE != BMInitializer->const_arg_begin()) 425 Out<< ", "; 426 const Expr *Exp = (*BE); 427 Exp->printPretty(Out, Context, 0, Policy, Indentation); 428 } 429 Out << ")"; 430 } else 431 Out << "()"; 432 } 433 } 434 } 435 else 436 AFT->getResultType().getAsStringInternal(Proto, Policy); 437 } else { 438 D->getType().getAsStringInternal(Proto, Policy); 439 } 440 441 Out << Proto; 442 443 if (D->isPure()) 444 Out << " = 0"; 445 else if (D->isDeleted()) 446 Out << " = delete"; 447 else if (D->isThisDeclarationADefinition()) { 448 if (!D->hasPrototype() && D->getNumParams()) { 449 // This is a K&R function definition, so we need to print the 450 // parameters. 451 Out << '\n'; 452 DeclPrinter ParamPrinter(Out, Context, SubPolicy, Indentation); 453 Indentation += Policy.Indentation; 454 for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) { 455 Indent(); 456 ParamPrinter.VisitParmVarDecl(D->getParamDecl(i)); 457 Out << ";\n"; 458 } 459 Indentation -= Policy.Indentation; 460 } else 461 Out << ' '; 462 463 D->getBody()->printPretty(Out, Context, 0, SubPolicy, Indentation); 464 Out << '\n'; 465 } 466} 467 468void DeclPrinter::VisitFieldDecl(FieldDecl *D) { 469 if (!Policy.SuppressSpecifiers && D->isMutable()) 470 Out << "mutable "; 471 472 std::string Name = D->getNameAsString(); 473 D->getType().getAsStringInternal(Name, Policy); 474 Out << Name; 475 476 if (D->isBitField()) { 477 Out << " : "; 478 D->getBitWidth()->printPretty(Out, Context, 0, Policy, Indentation); 479 } 480} 481 482void DeclPrinter::VisitVarDecl(VarDecl *D) { 483 if (!Policy.SuppressSpecifiers && D->getStorageClass() != VarDecl::None) 484 Out << VarDecl::getStorageClassSpecifierString(D->getStorageClass()) << " "; 485 486 if (!Policy.SuppressSpecifiers && D->isThreadSpecified()) 487 Out << "__thread "; 488 489 std::string Name = D->getNameAsString(); 490 QualType T = D->getType(); 491 if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) 492 T = Parm->getOriginalType(); 493 T.getAsStringInternal(Name, Policy); 494 Out << Name; 495 if (D->getInit()) { 496 if (D->hasCXXDirectInitializer()) 497 Out << "("; 498 else 499 Out << " = "; 500 D->getInit()->printPretty(Out, Context, 0, Policy, Indentation); 501 if (D->hasCXXDirectInitializer()) 502 Out << ")"; 503 } 504} 505 506void DeclPrinter::VisitParmVarDecl(ParmVarDecl *D) { 507 VisitVarDecl(D); 508} 509 510void DeclPrinter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 511 Out << "__asm ("; 512 D->getAsmString()->printPretty(Out, Context, 0, Policy, Indentation); 513 Out << ")"; 514} 515 516//---------------------------------------------------------------------------- 517// C++ declarations 518//---------------------------------------------------------------------------- 519void DeclPrinter::VisitNamespaceDecl(NamespaceDecl *D) { 520 Out << "namespace " << D->getNameAsString() << " {\n"; 521 VisitDeclContext(D); 522 Indent() << "}"; 523} 524 525void DeclPrinter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 526 Out << "using namespace "; 527 if (D->getQualifier()) 528 D->getQualifier()->print(Out, Policy); 529 Out << D->getNominatedNamespaceAsWritten()->getNameAsString(); 530} 531 532void DeclPrinter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 533 Out << "namespace " << D->getNameAsString() << " = "; 534 if (D->getQualifier()) 535 D->getQualifier()->print(Out, Policy); 536 Out << D->getAliasedNamespace()->getNameAsString(); 537} 538 539void DeclPrinter::VisitCXXRecordDecl(CXXRecordDecl *D) { 540 Out << D->getKindName(); 541 if (D->getIdentifier()) { 542 Out << " "; 543 Out << D->getNameAsString(); 544 } 545 546 if (D->isDefinition()) { 547 // Print the base classes 548 if (D->getNumBases()) { 549 Out << " : "; 550 for (CXXRecordDecl::base_class_iterator Base = D->bases_begin(), 551 BaseEnd = D->bases_end(); Base != BaseEnd; ++Base) { 552 if (Base != D->bases_begin()) 553 Out << ", "; 554 555 if (Base->isVirtual()) 556 Out << "virtual "; 557 558 AccessSpecifier AS = Base->getAccessSpecifierAsWritten(); 559 if (AS != AS_none) 560 Print(AS); 561 Out << " " << Base->getType().getAsString(Policy); 562 } 563 } 564 565 // Print the class definition 566 // FIXME: Doesn't print access specifiers, e.g., "public:" 567 Out << " {\n"; 568 VisitDeclContext(D); 569 Indent() << "}"; 570 } 571} 572 573void DeclPrinter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 574 const char *l; 575 if (D->getLanguage() == LinkageSpecDecl::lang_c) 576 l = "C"; 577 else { 578 assert(D->getLanguage() == LinkageSpecDecl::lang_cxx && 579 "unknown language in linkage specification"); 580 l = "C++"; 581 } 582 583 Out << "extern \"" << l << "\" "; 584 if (D->hasBraces()) { 585 Out << "{\n"; 586 VisitDeclContext(D); 587 Indent() << "}"; 588 } else 589 Visit(*D->decls_begin()); 590} 591 592void DeclPrinter::VisitTemplateDecl(TemplateDecl *D) { 593 Out << "template <"; 594 595 TemplateParameterList *Params = D->getTemplateParameters(); 596 for (unsigned i = 0, e = Params->size(); i != e; ++i) { 597 if (i != 0) 598 Out << ", "; 599 600 const Decl *Param = Params->getParam(i); 601 if (const TemplateTypeParmDecl *TTP = 602 dyn_cast<TemplateTypeParmDecl>(Param)) { 603 604 QualType ParamType = 605 Context.getTypeDeclType(const_cast<TemplateTypeParmDecl*>(TTP)); 606 607 if (TTP->wasDeclaredWithTypename()) 608 Out << "typename "; 609 else 610 Out << "class "; 611 612 if (TTP->isParameterPack()) 613 Out << "... "; 614 615 Out << ParamType.getAsString(Policy); 616 617 if (TTP->hasDefaultArgument()) { 618 Out << " = "; 619 Out << TTP->getDefaultArgument().getAsString(Policy); 620 }; 621 } else if (const NonTypeTemplateParmDecl *NTTP = 622 dyn_cast<NonTypeTemplateParmDecl>(Param)) { 623 Out << NTTP->getType().getAsString(Policy); 624 625 if (IdentifierInfo *Name = NTTP->getIdentifier()) { 626 Out << ' '; 627 Out << Name->getName(); 628 } 629 630 if (NTTP->hasDefaultArgument()) { 631 Out << " = "; 632 NTTP->getDefaultArgument()->printPretty(Out, Context, 0, Policy, 633 Indentation); 634 } 635 } 636 } 637 638 Out << "> "; 639 640 Visit(D->getTemplatedDecl()); 641} 642 643//---------------------------------------------------------------------------- 644// Objective-C declarations 645//---------------------------------------------------------------------------- 646 647void DeclPrinter::VisitObjCClassDecl(ObjCClassDecl *D) { 648 Out << "@class "; 649 for (ObjCClassDecl::iterator I = D->begin(), E = D->end(); 650 I != E; ++I) { 651 if (I != D->begin()) Out << ", "; 652 Out << I->getInterface()->getNameAsString(); 653 } 654} 655 656void DeclPrinter::VisitObjCMethodDecl(ObjCMethodDecl *OMD) { 657 if (OMD->isInstanceMethod()) 658 Out << "- "; 659 else 660 Out << "+ "; 661 if (!OMD->getResultType().isNull()) 662 Out << '(' << OMD->getResultType().getAsString(Policy) << ")"; 663 664 std::string name = OMD->getSelector().getAsString(); 665 std::string::size_type pos, lastPos = 0; 666 for (ObjCMethodDecl::param_iterator PI = OMD->param_begin(), 667 E = OMD->param_end(); PI != E; ++PI) { 668 // FIXME: selector is missing here! 669 pos = name.find_first_of(":", lastPos); 670 Out << " " << name.substr(lastPos, pos - lastPos); 671 Out << ":(" << (*PI)->getType().getAsString(Policy) << ")" 672 << (*PI)->getNameAsString(); 673 lastPos = pos + 1; 674 } 675 676 if (OMD->param_begin() == OMD->param_end()) 677 Out << " " << name; 678 679 if (OMD->isVariadic()) 680 Out << ", ..."; 681 682 if (OMD->getBody()) { 683 Out << ' '; 684 OMD->getBody()->printPretty(Out, Context, 0, Policy); 685 Out << '\n'; 686 } 687} 688 689void DeclPrinter::VisitObjCImplementationDecl(ObjCImplementationDecl *OID) { 690 std::string I = OID->getNameAsString(); 691 ObjCInterfaceDecl *SID = OID->getSuperClass(); 692 693 if (SID) 694 Out << "@implementation " << I << " : " << SID->getNameAsString(); 695 else 696 Out << "@implementation " << I; 697 Out << "\n"; 698 VisitDeclContext(OID, false); 699 Out << "@end"; 700} 701 702void DeclPrinter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *OID) { 703 std::string I = OID->getNameAsString(); 704 ObjCInterfaceDecl *SID = OID->getSuperClass(); 705 706 if (SID) 707 Out << "@interface " << I << " : " << SID->getNameAsString(); 708 else 709 Out << "@interface " << I; 710 711 // Protocols? 712 const ObjCList<ObjCProtocolDecl> &Protocols = OID->getReferencedProtocols(); 713 if (!Protocols.empty()) { 714 for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(), 715 E = Protocols.end(); I != E; ++I) 716 Out << (I == Protocols.begin() ? '<' : ',') << (*I)->getNameAsString(); 717 } 718 719 if (!Protocols.empty()) 720 Out << "> "; 721 722 if (OID->ivar_size() > 0) { 723 Out << "{\n"; 724 Indentation += Policy.Indentation; 725 for (ObjCInterfaceDecl::ivar_iterator I = OID->ivar_begin(), 726 E = OID->ivar_end(); I != E; ++I) { 727 Indent() << (*I)->getType().getAsString(Policy) 728 << ' ' << (*I)->getNameAsString() << ";\n"; 729 } 730 Indentation -= Policy.Indentation; 731 Out << "}\n"; 732 } 733 734 VisitDeclContext(OID, false); 735 Out << "@end"; 736 // FIXME: implement the rest... 737} 738 739void DeclPrinter::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { 740 Out << "@protocol "; 741 for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(), 742 E = D->protocol_end(); 743 I != E; ++I) { 744 if (I != D->protocol_begin()) Out << ", "; 745 Out << (*I)->getNameAsString(); 746 } 747} 748 749void DeclPrinter::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) { 750 Out << "@protocol " << PID->getNameAsString() << '\n'; 751 VisitDeclContext(PID, false); 752 Out << "@end"; 753} 754 755void DeclPrinter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *PID) { 756 Out << "@implementation " 757 << PID->getClassInterface()->getNameAsString() 758 << '(' << PID->getNameAsString() << ")\n"; 759 760 VisitDeclContext(PID, false); 761 Out << "@end"; 762 // FIXME: implement the rest... 763} 764 765void DeclPrinter::VisitObjCCategoryDecl(ObjCCategoryDecl *PID) { 766 Out << "@interface " 767 << PID->getClassInterface()->getNameAsString() 768 << '(' << PID->getNameAsString() << ")\n"; 769 VisitDeclContext(PID, false); 770 Out << "@end"; 771 772 // FIXME: implement the rest... 773} 774 775void DeclPrinter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *AID) { 776 Out << "@compatibility_alias " << AID->getNameAsString() 777 << ' ' << AID->getClassInterface()->getNameAsString() << ";\n"; 778} 779 780/// PrintObjCPropertyDecl - print a property declaration. 781/// 782void DeclPrinter::VisitObjCPropertyDecl(ObjCPropertyDecl *PDecl) { 783 if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Required) 784 Out << "@required\n"; 785 else if (PDecl->getPropertyImplementation() == ObjCPropertyDecl::Optional) 786 Out << "@optional\n"; 787 788 Out << "@property"; 789 if (PDecl->getPropertyAttributes() != ObjCPropertyDecl::OBJC_PR_noattr) { 790 bool first = true; 791 Out << " ("; 792 if (PDecl->getPropertyAttributes() & 793 ObjCPropertyDecl::OBJC_PR_readonly) { 794 Out << (first ? ' ' : ',') << "readonly"; 795 first = false; 796 } 797 798 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_getter) { 799 Out << (first ? ' ' : ',') << "getter = " 800 << PDecl->getGetterName().getAsString(); 801 first = false; 802 } 803 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_setter) { 804 Out << (first ? ' ' : ',') << "setter = " 805 << PDecl->getSetterName().getAsString(); 806 first = false; 807 } 808 809 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_assign) { 810 Out << (first ? ' ' : ',') << "assign"; 811 first = false; 812 } 813 814 if (PDecl->getPropertyAttributes() & 815 ObjCPropertyDecl::OBJC_PR_readwrite) { 816 Out << (first ? ' ' : ',') << "readwrite"; 817 first = false; 818 } 819 820 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_retain) { 821 Out << (first ? ' ' : ',') << "retain"; 822 first = false; 823 } 824 825 if (PDecl->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_copy) { 826 Out << (first ? ' ' : ',') << "copy"; 827 first = false; 828 } 829 830 if (PDecl->getPropertyAttributes() & 831 ObjCPropertyDecl::OBJC_PR_nonatomic) { 832 Out << (first ? ' ' : ',') << "nonatomic"; 833 first = false; 834 } 835 Out << " )"; 836 } 837 Out << ' ' << PDecl->getType().getAsString(Policy) 838 << ' ' << PDecl->getNameAsString(); 839} 840 841void DeclPrinter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *PID) { 842 if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) 843 Out << "@synthesize "; 844 else 845 Out << "@dynamic "; 846 Out << PID->getPropertyDecl()->getNameAsString(); 847 if (PID->getPropertyIvarDecl()) 848 Out << "=" << PID->getPropertyIvarDecl()->getNameAsString(); 849} 850 851void DeclPrinter::VisitUsingDecl(UsingDecl *D) { 852 Out << "using "; 853 D->getTargetNestedNameDecl()->print(Out, Policy); 854 Out << D->getNameAsString(); 855} 856 857void 858DeclPrinter::VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D) { 859 Out << "using typename "; 860 D->getTargetNestedNameSpecifier()->print(Out, Policy); 861 Out << D->getDeclName().getAsString(); 862} 863 864void DeclPrinter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 865 Out << "using "; 866 D->getTargetNestedNameSpecifier()->print(Out, Policy); 867 Out << D->getDeclName().getAsString(); 868} 869 870void DeclPrinter::VisitUsingShadowDecl(UsingShadowDecl *D) { 871 // ignore 872} 873