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| 8 | |
| 9 | #include "CursorVisitor.h" |
| 10 | #include "CLog.h" |
| 11 | #include "CXCursor.h" |
| 12 | #include "CXSourceLocation.h" |
| 13 | #include "CXTranslationUnit.h" |
| 14 | #include "clang/AST/DeclObjC.h" |
| 15 | #include "clang/Frontend/ASTUnit.h" |
| 16 | #include "llvm/Support/Compiler.h" |
| 17 | |
| 18 | using namespace clang; |
| 19 | using namespace cxcursor; |
| 20 | using namespace cxindex; |
| 21 | |
| 22 | static void getTopOverriddenMethods(CXTranslationUnit TU, |
| 23 | const Decl *D, |
| 24 | SmallVectorImpl<const Decl *> &Methods) { |
| 25 | if (!D) |
| 26 | return; |
| 27 | if (!isa<ObjCMethodDecl>(D) && !isa<CXXMethodDecl>(D)) |
| 28 | return; |
| 29 | |
| 30 | SmallVector<CXCursor, 8> Overridden; |
| 31 | cxcursor::getOverriddenCursors(cxcursor::MakeCXCursor(D, TU), Overridden); |
| 32 | |
| 33 | if (Overridden.empty()) { |
| 34 | Methods.push_back(D->getCanonicalDecl()); |
| 35 | return; |
| 36 | } |
| 37 | |
| 38 | for (SmallVectorImpl<CXCursor>::iterator |
| 39 | I = Overridden.begin(), E = Overridden.end(); I != E; ++I) |
| 40 | getTopOverriddenMethods(TU, cxcursor::getCursorDecl(*I), Methods); |
| 41 | } |
| 42 | |
| 43 | namespace { |
| 44 | |
| 45 | struct FindFileIdRefVisitData { |
| 46 | CXTranslationUnit TU; |
| 47 | FileID FID; |
| 48 | const Decl *Dcl; |
| 49 | int SelectorIdIdx; |
| 50 | CXCursorAndRangeVisitor visitor; |
| 51 | |
| 52 | typedef SmallVector<const Decl *, 8> TopMethodsTy; |
| 53 | TopMethodsTy TopMethods; |
| 54 | |
| 55 | FindFileIdRefVisitData(CXTranslationUnit TU, FileID FID, |
| 56 | const Decl *D, int selectorIdIdx, |
| 57 | CXCursorAndRangeVisitor visitor) |
| 58 | : TU(TU), FID(FID), SelectorIdIdx(selectorIdIdx), visitor(visitor) { |
| 59 | Dcl = getCanonical(D); |
| 60 | getTopOverriddenMethods(TU, Dcl, TopMethods); |
| 61 | } |
| 62 | |
| 63 | ASTContext &getASTContext() const { |
| 64 | return cxtu::getASTUnit(TU)->getASTContext(); |
| 65 | } |
| 66 | |
| 67 | |
| 68 | |
| 69 | |
| 70 | |
| 71 | |
| 72 | |
| 73 | |
| 74 | |
| 75 | |
| 76 | |
| 77 | |
| 78 | const Decl *getCanonical(const Decl *D) const { |
| 79 | if (!D) |
| 80 | return nullptr; |
| 81 | |
| 82 | D = D->getCanonicalDecl(); |
| 83 | |
| 84 | if (const ObjCImplDecl *ImplD = dyn_cast<ObjCImplDecl>(D)) { |
| 85 | if (ImplD->getClassInterface()) |
| 86 | return getCanonical(ImplD->getClassInterface()); |
| 87 | |
| 88 | } else if (const CXXConstructorDecl *CXXCtorD = |
| 89 | dyn_cast<CXXConstructorDecl>(D)) { |
| 90 | return getCanonical(CXXCtorD->getParent()); |
| 91 | } |
| 92 | |
| 93 | return D; |
| 94 | } |
| 95 | |
| 96 | bool isHit(const Decl *D) const { |
| 97 | if (!D) |
| 98 | return false; |
| 99 | |
| 100 | D = getCanonical(D); |
| 101 | if (D == Dcl) |
| 102 | return true; |
| 103 | |
| 104 | if (isa<ObjCMethodDecl>(D) || isa<CXXMethodDecl>(D)) |
| 105 | return isOverriddingMethod(D); |
| 106 | |
| 107 | return false; |
| 108 | } |
| 109 | |
| 110 | private: |
| 111 | bool isOverriddingMethod(const Decl *D) const { |
| 112 | if (std::find(TopMethods.begin(), TopMethods.end(), D) != |
| 113 | TopMethods.end()) |
| 114 | return true; |
| 115 | |
| 116 | TopMethodsTy methods; |
| 117 | getTopOverriddenMethods(TU, D, methods); |
| 118 | for (TopMethodsTy::iterator |
| 119 | I = methods.begin(), E = methods.end(); I != E; ++I) { |
| 120 | if (std::find(TopMethods.begin(), TopMethods.end(), *I) != |
| 121 | TopMethods.end()) |
| 122 | return true; |
| 123 | } |
| 124 | |
| 125 | return false; |
| 126 | } |
| 127 | }; |
| 128 | |
| 129 | } |
| 130 | |
| 131 | |
| 132 | |
| 133 | |
| 134 | static SourceLocation getFileSpellingLoc(SourceManager &SM, |
| 135 | SourceLocation Loc, |
| 136 | bool &isMacroArg) { |
| 137 | assert(Loc.isMacroID()); |
| 138 | SourceLocation SpellLoc = SM.getImmediateSpellingLoc(Loc); |
| 139 | if (SpellLoc.isMacroID()) |
| 140 | return getFileSpellingLoc(SM, SpellLoc, isMacroArg); |
| 141 | |
| 142 | isMacroArg = SM.isMacroArgExpansion(Loc); |
| 143 | return SpellLoc; |
| 144 | } |
| 145 | |
| 146 | static enum CXChildVisitResult findFileIdRefVisit(CXCursor cursor, |
| 147 | CXCursor parent, |
| 148 | CXClientData client_data) { |
| 149 | CXCursor declCursor = clang_getCursorReferenced(cursor); |
| 150 | if (!clang_isDeclaration(declCursor.kind)) |
| 151 | return CXChildVisit_Recurse; |
| 152 | |
| 153 | const Decl *D = cxcursor::getCursorDecl(declCursor); |
| 154 | if (!D) |
| 155 | return CXChildVisit_Continue; |
| 156 | |
| 157 | FindFileIdRefVisitData *data = (FindFileIdRefVisitData *)client_data; |
| 158 | if (data->isHit(D)) { |
| 159 | cursor = cxcursor::getSelectorIdentifierCursor(data->SelectorIdIdx, cursor); |
| 160 | |
| 161 | |
| 162 | |
| 163 | if ((cursor.kind == CXCursor_ObjCClassMethodDecl || |
| 164 | cursor.kind == CXCursor_ObjCInstanceMethodDecl) && |
| 165 | cxcursor::getSelectorIdentifierIndex(cursor) == -1) |
| 166 | return CXChildVisit_Recurse; |
| 167 | |
| 168 | if (clang_isExpression(cursor.kind)) { |
| 169 | if (cursor.kind == CXCursor_DeclRefExpr || |
| 170 | cursor.kind == CXCursor_MemberRefExpr) { |
| 171 | |
| 172 | |
| 173 | } else if (cursor.kind == CXCursor_ObjCMessageExpr && |
| 174 | cxcursor::getSelectorIdentifierIndex(cursor) != -1) { |
| 175 | |
| 176 | |
| 177 | } else |
| 178 | return CXChildVisit_Recurse; |
| 179 | } |
| 180 | |
| 181 | SourceLocation |
| 182 | Loc = cxloc::translateSourceLocation(clang_getCursorLocation(cursor)); |
| 183 | SourceLocation SelIdLoc = cxcursor::getSelectorIdentifierLoc(cursor); |
| 184 | if (SelIdLoc.isValid()) |
| 185 | Loc = SelIdLoc; |
| 186 | |
| 187 | ASTContext &Ctx = data->getASTContext(); |
| 188 | SourceManager &SM = Ctx.getSourceManager(); |
| 189 | bool isInMacroDef = false; |
| 190 | if (Loc.isMacroID()) { |
| 191 | bool isMacroArg; |
| 192 | Loc = getFileSpellingLoc(SM, Loc, isMacroArg); |
| 193 | isInMacroDef = !isMacroArg; |
| 194 | } |
| 195 | |
| 196 | |
| 197 | std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc); |
| 198 | if (LocInfo.first != data->FID) |
| 199 | return CXChildVisit_Recurse; |
| 200 | |
| 201 | if (isInMacroDef) { |
| 202 | |
| 203 | |
| 204 | return CXChildVisit_Recurse; |
| 205 | } |
| 206 | |
| 207 | if (data->visitor.visit(data->visitor.context, cursor, |
| 208 | cxloc::translateSourceRange(Ctx, Loc)) == CXVisit_Break) |
| 209 | return CXChildVisit_Break; |
| 210 | } |
| 211 | return CXChildVisit_Recurse; |
| 212 | } |
| 213 | |
| 214 | static bool findIdRefsInFile(CXTranslationUnit TU, CXCursor declCursor, |
| 215 | const FileEntry *File, |
| 216 | CXCursorAndRangeVisitor Visitor) { |
| 217 | assert(clang_isDeclaration(declCursor.kind)); |
| 218 | SourceManager &SM = cxtu::getASTUnit(TU)->getSourceManager(); |
| 219 | |
| 220 | FileID FID = SM.translateFile(File); |
| 221 | const Decl *Dcl = cxcursor::getCursorDecl(declCursor); |
| 222 | if (!Dcl) |
| 223 | return false; |
| 224 | |
| 225 | FindFileIdRefVisitData data(TU, FID, Dcl, |
| 226 | cxcursor::getSelectorIdentifierIndex(declCursor), |
| 227 | Visitor); |
| 228 | |
| 229 | if (const DeclContext *DC = Dcl->getParentFunctionOrMethod()) { |
| 230 | return clang_visitChildren(cxcursor::MakeCXCursor(cast<Decl>(DC), TU), |
| 231 | findFileIdRefVisit, &data); |
| 232 | } |
| 233 | |
| 234 | SourceRange Range(SM.getLocForStartOfFile(FID), SM.getLocForEndOfFile(FID)); |
| 235 | CursorVisitor FindIdRefsVisitor(TU, |
| 236 | findFileIdRefVisit, &data, |
| 237 | , |
| 238 | , |
| 239 | Range, |
| 240 | ); |
| 241 | return FindIdRefsVisitor.visitFileRegion(); |
| 242 | } |
| 243 | |
| 244 | namespace { |
| 245 | |
| 246 | struct FindFileMacroRefVisitData { |
| 247 | ASTUnit &Unit; |
| 248 | const FileEntry *File; |
| 249 | const IdentifierInfo *Macro; |
| 250 | CXCursorAndRangeVisitor visitor; |
| 251 | |
| 252 | FindFileMacroRefVisitData(ASTUnit &Unit, const FileEntry *File, |
| 253 | const IdentifierInfo *Macro, |
| 254 | CXCursorAndRangeVisitor visitor) |
| 255 | : Unit(Unit), File(File), Macro(Macro), visitor(visitor) { } |
| 256 | |
| 257 | ASTContext &getASTContext() const { |
| 258 | return Unit.getASTContext(); |
| 259 | } |
| 260 | }; |
| 261 | |
| 262 | } |
| 263 | |
| 264 | static enum CXChildVisitResult findFileMacroRefVisit(CXCursor cursor, |
| 265 | CXCursor parent, |
| 266 | CXClientData client_data) { |
| 267 | const IdentifierInfo *Macro = nullptr; |
| 268 | if (cursor.kind == CXCursor_MacroDefinition) |
| 269 | Macro = getCursorMacroDefinition(cursor)->getName(); |
| 270 | else if (cursor.kind == CXCursor_MacroExpansion) |
| 271 | Macro = getCursorMacroExpansion(cursor).getName(); |
| 272 | if (!Macro) |
| 273 | return CXChildVisit_Continue; |
| 274 | |
| 275 | FindFileMacroRefVisitData *data = (FindFileMacroRefVisitData *)client_data; |
| 276 | if (data->Macro != Macro) |
| 277 | return CXChildVisit_Continue; |
| 278 | |
| 279 | SourceLocation |
| 280 | Loc = cxloc::translateSourceLocation(clang_getCursorLocation(cursor)); |
| 281 | |
| 282 | ASTContext &Ctx = data->getASTContext(); |
| 283 | SourceManager &SM = Ctx.getSourceManager(); |
| 284 | bool isInMacroDef = false; |
| 285 | if (Loc.isMacroID()) { |
| 286 | bool isMacroArg; |
| 287 | Loc = getFileSpellingLoc(SM, Loc, isMacroArg); |
| 288 | isInMacroDef = !isMacroArg; |
| 289 | } |
| 290 | |
| 291 | |
| 292 | std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc); |
| 293 | if (SM.getFileEntryForID(LocInfo.first) != data->File) |
| 294 | return CXChildVisit_Continue; |
| 295 | |
| 296 | if (isInMacroDef) { |
| 297 | |
| 298 | |
| 299 | return CXChildVisit_Continue; |
| 300 | } |
| 301 | |
| 302 | if (data->visitor.visit(data->visitor.context, cursor, |
| 303 | cxloc::translateSourceRange(Ctx, Loc)) == CXVisit_Break) |
| 304 | return CXChildVisit_Break; |
| 305 | return CXChildVisit_Continue; |
| 306 | } |
| 307 | |
| 308 | static bool findMacroRefsInFile(CXTranslationUnit TU, CXCursor Cursor, |
| 309 | const FileEntry *File, |
| 310 | CXCursorAndRangeVisitor Visitor) { |
| 311 | if (Cursor.kind != CXCursor_MacroDefinition && |
| 312 | Cursor.kind != CXCursor_MacroExpansion) |
| 313 | return false; |
| 314 | |
| 315 | ASTUnit *Unit = cxtu::getASTUnit(TU); |
| 316 | SourceManager &SM = Unit->getSourceManager(); |
| 317 | |
| 318 | FileID FID = SM.translateFile(File); |
| 319 | const IdentifierInfo *Macro = nullptr; |
| 320 | if (Cursor.kind == CXCursor_MacroDefinition) |
| 321 | Macro = getCursorMacroDefinition(Cursor)->getName(); |
| 322 | else |
| 323 | Macro = getCursorMacroExpansion(Cursor).getName(); |
| 324 | if (!Macro) |
| 325 | return false; |
| 326 | |
| 327 | FindFileMacroRefVisitData data(*Unit, File, Macro, Visitor); |
| 328 | |
| 329 | SourceRange Range(SM.getLocForStartOfFile(FID), SM.getLocForEndOfFile(FID)); |
| 330 | CursorVisitor FindMacroRefsVisitor(TU, |
| 331 | findFileMacroRefVisit, &data, |
| 332 | , |
| 333 | , |
| 334 | Range); |
| 335 | return FindMacroRefsVisitor.visitPreprocessedEntitiesInRegion(); |
| 336 | } |
| 337 | |
| 338 | namespace { |
| 339 | |
| 340 | struct FindFileIncludesVisitor { |
| 341 | ASTUnit &Unit; |
| 342 | const FileEntry *File; |
| 343 | CXCursorAndRangeVisitor visitor; |
| 344 | |
| 345 | FindFileIncludesVisitor(ASTUnit &Unit, const FileEntry *File, |
| 346 | CXCursorAndRangeVisitor visitor) |
| 347 | : Unit(Unit), File(File), visitor(visitor) { } |
| 348 | |
| 349 | ASTContext &getASTContext() const { |
| 350 | return Unit.getASTContext(); |
| 351 | } |
| 352 | |
| 353 | enum CXChildVisitResult visit(CXCursor cursor, CXCursor parent) { |
| 354 | if (cursor.kind != CXCursor_InclusionDirective) |
| 355 | return CXChildVisit_Continue; |
| 356 | |
| 357 | SourceLocation |
| 358 | Loc = cxloc::translateSourceLocation(clang_getCursorLocation(cursor)); |
| 359 | |
| 360 | ASTContext &Ctx = getASTContext(); |
| 361 | SourceManager &SM = Ctx.getSourceManager(); |
| 362 | |
| 363 | |
| 364 | std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc); |
| 365 | if (SM.getFileEntryForID(LocInfo.first) != File) |
| 366 | return CXChildVisit_Continue; |
| 367 | |
| 368 | if (visitor.visit(visitor.context, cursor, |
| 369 | cxloc::translateSourceRange(Ctx, Loc)) == CXVisit_Break) |
| 370 | return CXChildVisit_Break; |
| 371 | return CXChildVisit_Continue; |
| 372 | } |
| 373 | |
| 374 | static enum CXChildVisitResult visit(CXCursor cursor, CXCursor parent, |
| 375 | CXClientData client_data) { |
| 376 | return static_cast<FindFileIncludesVisitor*>(client_data)-> |
| 377 | visit(cursor, parent); |
| 378 | } |
| 379 | }; |
| 380 | |
| 381 | } |
| 382 | |
| 383 | static bool findIncludesInFile(CXTranslationUnit TU, const FileEntry *File, |
| 384 | CXCursorAndRangeVisitor Visitor) { |
| 385 | assert(TU && File && Visitor.visit); |
| 386 | |
| 387 | ASTUnit *Unit = cxtu::getASTUnit(TU); |
| 388 | SourceManager &SM = Unit->getSourceManager(); |
| 389 | |
| 390 | FileID FID = SM.translateFile(File); |
| 391 | |
| 392 | FindFileIncludesVisitor IncludesVisitor(*Unit, File, Visitor); |
| 393 | |
| 394 | SourceRange Range(SM.getLocForStartOfFile(FID), SM.getLocForEndOfFile(FID)); |
| 395 | CursorVisitor InclusionCursorsVisitor(TU, |
| 396 | FindFileIncludesVisitor::visit, |
| 397 | &IncludesVisitor, |
| 398 | , |
| 399 | , |
| 400 | Range); |
| 401 | return InclusionCursorsVisitor.visitPreprocessedEntitiesInRegion(); |
| 402 | } |
| 403 | |
| 404 | |
| 405 | |
| 406 | |
| 407 | |
| 408 | |
| 409 | extern "C" { |
| 410 | |
| 411 | CXResult clang_findReferencesInFile(CXCursor cursor, CXFile file, |
| 412 | CXCursorAndRangeVisitor visitor) { |
| 413 | LogRef Log = Logger::make(__func__); |
| 414 | |
| 415 | if (clang_Cursor_isNull(cursor)) { |
| 416 | if (Log) |
| 417 | *Log << "Null cursor"; |
| 418 | return CXResult_Invalid; |
| 419 | } |
| 420 | if (cursor.kind == CXCursor_NoDeclFound) { |
| 421 | if (Log) |
| 422 | *Log << "Got CXCursor_NoDeclFound"; |
| 423 | return CXResult_Invalid; |
| 424 | } |
| 425 | if (!file) { |
| 426 | if (Log) |
| 427 | *Log << "Null file"; |
| 428 | return CXResult_Invalid; |
| 429 | } |
| 430 | if (!visitor.visit) { |
| 431 | if (Log) |
| 432 | *Log << "Null visitor"; |
| 433 | return CXResult_Invalid; |
| 434 | } |
| 435 | |
| 436 | if (Log) |
| 437 | *Log << cursor << " @" << static_cast<const FileEntry *>(file); |
| 438 | |
| 439 | ASTUnit *CXXUnit = cxcursor::getCursorASTUnit(cursor); |
| 440 | if (!CXXUnit) |
| 441 | return CXResult_Invalid; |
| 442 | |
| 443 | ASTUnit::ConcurrencyCheck Check(*CXXUnit); |
| 444 | |
| 445 | if (cursor.kind == CXCursor_MacroDefinition || |
| 446 | cursor.kind == CXCursor_MacroExpansion) { |
| 447 | if (findMacroRefsInFile(cxcursor::getCursorTU(cursor), |
| 448 | cursor, |
| 449 | static_cast<const FileEntry *>(file), |
| 450 | visitor)) |
| 451 | return CXResult_VisitBreak; |
| 452 | return CXResult_Success; |
| 453 | } |
| 454 | |
| 455 | |
| 456 | |
| 457 | |
| 458 | |
| 459 | |
| 460 | |
| 461 | |
| 462 | cursor = cxcursor::getTypeRefCursor(cursor); |
| 463 | |
| 464 | CXCursor refCursor = clang_getCursorReferenced(cursor); |
| 465 | |
| 466 | if (!clang_isDeclaration(refCursor.kind)) { |
| 467 | if (Log) |
| 468 | *Log << "cursor is not referencing a declaration"; |
| 469 | return CXResult_Invalid; |
| 470 | } |
| 471 | |
| 472 | if (findIdRefsInFile(cxcursor::getCursorTU(cursor), |
| 473 | refCursor, |
| 474 | static_cast<const FileEntry *>(file), |
| 475 | visitor)) |
| 476 | return CXResult_VisitBreak; |
| 477 | return CXResult_Success; |
| 478 | } |
| 479 | |
| 480 | CXResult clang_findIncludesInFile(CXTranslationUnit TU, CXFile file, |
| 481 | CXCursorAndRangeVisitor visitor) { |
| 482 | if (cxtu::isNotUsableTU(TU)) { |
| 483 | LOG_BAD_TU(TU); |
| 484 | return CXResult_Invalid; |
| 485 | } |
| 486 | |
| 487 | LogRef Log = Logger::make(__func__); |
| 488 | if (!file) { |
| 489 | if (Log) |
| 490 | *Log << "Null file"; |
| 491 | return CXResult_Invalid; |
| 492 | } |
| 493 | if (!visitor.visit) { |
| 494 | if (Log) |
| 495 | *Log << "Null visitor"; |
| 496 | return CXResult_Invalid; |
| 497 | } |
| 498 | |
| 499 | if (Log) |
| 500 | *Log << TU << " @" << static_cast<const FileEntry *>(file); |
| 501 | |
| 502 | ASTUnit *CXXUnit = cxtu::getASTUnit(TU); |
| 503 | if (!CXXUnit) |
| 504 | return CXResult_Invalid; |
| 505 | |
| 506 | ASTUnit::ConcurrencyCheck Check(*CXXUnit); |
| 507 | |
| 508 | if (findIncludesInFile(TU, static_cast<const FileEntry *>(file), visitor)) |
| 509 | return CXResult_VisitBreak; |
| 510 | return CXResult_Success; |
| 511 | } |
| 512 | |
| 513 | static enum CXVisitorResult _visitCursorAndRange(void *context, |
| 514 | CXCursor cursor, |
| 515 | CXSourceRange range) { |
| 516 | CXCursorAndRangeVisitorBlock block = (CXCursorAndRangeVisitorBlock)context; |
| 517 | return INVOKE_BLOCK2(block, cursor, range); |
| 518 | } |
| 519 | |
| 520 | CXResult clang_findReferencesInFileWithBlock(CXCursor cursor, |
| 521 | CXFile file, |
| 522 | CXCursorAndRangeVisitorBlock block) { |
| 523 | CXCursorAndRangeVisitor visitor = { block, |
| 524 | block ? _visitCursorAndRange : nullptr }; |
| 525 | return clang_findReferencesInFile(cursor, file, visitor); |
| 526 | } |
| 527 | |
| 528 | CXResult clang_findIncludesInFileWithBlock(CXTranslationUnit TU, |
| 529 | CXFile file, |
| 530 | CXCursorAndRangeVisitorBlock block) { |
| 531 | CXCursorAndRangeVisitor visitor = { block, |
| 532 | block ? _visitCursorAndRange : nullptr }; |
| 533 | return clang_findIncludesInFile(TU, file, visitor); |
| 534 | } |
| 535 | |
| 536 | } |
| 537 | |