1 //===--- Diagnostic.cpp - C Language Family Diagnostic Handling -----------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the Diagnostic-related interfaces. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Basic/Diagnostic.h" 15 #include "clang/Basic/IdentifierTable.h" 16 #include "clang/Basic/PartialDiagnostic.h" 17 #include "llvm/ADT/SmallString.h" 18 #include "llvm/Support/raw_ostream.h" 19 #include "llvm/Support/CrashRecoveryContext.h" 20 21 using namespace clang; 22 23 static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT, 24 const char *Modifier, unsigned ML, 25 const char *Argument, unsigned ArgLen, 26 const DiagnosticsEngine::ArgumentValue *PrevArgs, 27 unsigned NumPrevArgs, 28 SmallVectorImpl<char> &Output, 29 void *Cookie, 30 ArrayRef<intptr_t> QualTypeVals) { 31 const char *Str = "<can't format argument>"; 32 Output.append(Str, Str+strlen(Str)); 33 } 34 35 36 DiagnosticsEngine::DiagnosticsEngine( 37 const IntrusiveRefCntPtr<DiagnosticIDs> &diags, 38 DiagnosticConsumer *client, bool ShouldOwnClient) 39 : Diags(diags), Client(client), OwnsDiagClient(ShouldOwnClient), 40 SourceMgr(0) { 41 ArgToStringFn = DummyArgToStringFn; 42 ArgToStringCookie = 0; 43 44 AllExtensionsSilenced = 0; 45 IgnoreAllWarnings = false; 46 WarningsAsErrors = false; 47 EnableAllWarnings = false; 48 ErrorsAsFatal = false; 49 SuppressSystemWarnings = false; 50 SuppressAllDiagnostics = false; 51 ShowOverloads = Ovl_All; 52 ExtBehavior = Ext_Ignore; 53 54 ErrorLimit = 0; 55 TemplateBacktraceLimit = 0; 56 ConstexprBacktraceLimit = 0; 57 58 Reset(); 59 } 60 61 DiagnosticsEngine::~DiagnosticsEngine() { 62 if (OwnsDiagClient) 63 delete Client; 64 } 65 66 void DiagnosticsEngine::setClient(DiagnosticConsumer *client, 67 bool ShouldOwnClient) { 68 if (OwnsDiagClient && Client) 69 delete Client; 70 71 Client = client; 72 OwnsDiagClient = ShouldOwnClient; 73 } 74 75 void DiagnosticsEngine::pushMappings(SourceLocation Loc) { 76 DiagStateOnPushStack.push_back(GetCurDiagState()); 77 } 78 79 bool DiagnosticsEngine::popMappings(SourceLocation Loc) { 80 if (DiagStateOnPushStack.empty()) 81 return false; 82 83 if (DiagStateOnPushStack.back() != GetCurDiagState()) { 84 // State changed at some point between push/pop. 85 PushDiagStatePoint(DiagStateOnPushStack.back(), Loc); 86 } 87 DiagStateOnPushStack.pop_back(); 88 return true; 89 } 90 91 void DiagnosticsEngine::Reset() { 92 ErrorOccurred = false; 93 FatalErrorOccurred = false; 94 UnrecoverableErrorOccurred = false; 95 96 NumWarnings = 0; 97 NumErrors = 0; 98 NumErrorsSuppressed = 0; 99 TrapNumErrorsOccurred = 0; 100 TrapNumUnrecoverableErrorsOccurred = 0; 101 102 CurDiagID = ~0U; 103 // Set LastDiagLevel to an "unset" state. If we set it to 'Ignored', notes 104 // using a DiagnosticsEngine associated to a translation unit that follow 105 // diagnostics from a DiagnosticsEngine associated to anoter t.u. will not be 106 // displayed. 107 LastDiagLevel = (DiagnosticIDs::Level)-1; 108 DelayedDiagID = 0; 109 110 // Clear state related to #pragma diagnostic. 111 DiagStates.clear(); 112 DiagStatePoints.clear(); 113 DiagStateOnPushStack.clear(); 114 115 // Create a DiagState and DiagStatePoint representing diagnostic changes 116 // through command-line. 117 DiagStates.push_back(DiagState()); 118 PushDiagStatePoint(&DiagStates.back(), SourceLocation()); 119 } 120 121 void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1, 122 StringRef Arg2) { 123 if (DelayedDiagID) 124 return; 125 126 DelayedDiagID = DiagID; 127 DelayedDiagArg1 = Arg1.str(); 128 DelayedDiagArg2 = Arg2.str(); 129 } 130 131 void DiagnosticsEngine::ReportDelayed() { 132 Report(DelayedDiagID) << DelayedDiagArg1 << DelayedDiagArg2; 133 DelayedDiagID = 0; 134 DelayedDiagArg1.clear(); 135 DelayedDiagArg2.clear(); 136 } 137 138 DiagnosticsEngine::DiagStatePointsTy::iterator 139 DiagnosticsEngine::GetDiagStatePointForLoc(SourceLocation L) const { 140 assert(!DiagStatePoints.empty()); 141 assert(DiagStatePoints.front().Loc.isInvalid() && 142 "Should have created a DiagStatePoint for command-line"); 143 144 FullSourceLoc Loc(L, *SourceMgr); 145 if (Loc.isInvalid()) 146 return DiagStatePoints.end() - 1; 147 148 DiagStatePointsTy::iterator Pos = DiagStatePoints.end(); 149 FullSourceLoc LastStateChangePos = DiagStatePoints.back().Loc; 150 if (LastStateChangePos.isValid() && 151 Loc.isBeforeInTranslationUnitThan(LastStateChangePos)) 152 Pos = std::upper_bound(DiagStatePoints.begin(), DiagStatePoints.end(), 153 DiagStatePoint(0, Loc)); 154 --Pos; 155 return Pos; 156 } 157 158 /// \brief This allows the client to specify that certain 159 /// warnings are ignored. Notes can never be mapped, errors can only be 160 /// mapped to fatal, and WARNINGs and EXTENSIONs can be mapped arbitrarily. 161 /// 162 /// \param The source location that this change of diagnostic state should 163 /// take affect. It can be null if we are setting the latest state. 164 void DiagnosticsEngine::setDiagnosticMapping(diag::kind Diag, diag::Mapping Map, 165 SourceLocation L) { 166 assert(Diag < diag::DIAG_UPPER_LIMIT && 167 "Can only map builtin diagnostics"); 168 assert((Diags->isBuiltinWarningOrExtension(Diag) || 169 (Map == diag::MAP_FATAL || Map == diag::MAP_ERROR)) && 170 "Cannot map errors into warnings!"); 171 assert(!DiagStatePoints.empty()); 172 173 FullSourceLoc Loc(L, *SourceMgr); 174 FullSourceLoc LastStateChangePos = DiagStatePoints.back().Loc; 175 // Don't allow a mapping to a warning override an error/fatal mapping. 176 if (Map == diag::MAP_WARNING) { 177 DiagnosticMappingInfo &Info = GetCurDiagState()->getOrAddMappingInfo(Diag); 178 if (Info.getMapping() == diag::MAP_ERROR || 179 Info.getMapping() == diag::MAP_FATAL) 180 Map = Info.getMapping(); 181 } 182 DiagnosticMappingInfo MappingInfo = makeMappingInfo(Map, L); 183 184 // Common case; setting all the diagnostics of a group in one place. 185 if (Loc.isInvalid() || Loc == LastStateChangePos) { 186 GetCurDiagState()->setMappingInfo(Diag, MappingInfo); 187 return; 188 } 189 190 // Another common case; modifying diagnostic state in a source location 191 // after the previous one. 192 if ((Loc.isValid() && LastStateChangePos.isInvalid()) || 193 LastStateChangePos.isBeforeInTranslationUnitThan(Loc)) { 194 // A diagnostic pragma occurred, create a new DiagState initialized with 195 // the current one and a new DiagStatePoint to record at which location 196 // the new state became active. 197 DiagStates.push_back(*GetCurDiagState()); 198 PushDiagStatePoint(&DiagStates.back(), Loc); 199 GetCurDiagState()->setMappingInfo(Diag, MappingInfo); 200 return; 201 } 202 203 // We allow setting the diagnostic state in random source order for 204 // completeness but it should not be actually happening in normal practice. 205 206 DiagStatePointsTy::iterator Pos = GetDiagStatePointForLoc(Loc); 207 assert(Pos != DiagStatePoints.end()); 208 209 // Update all diagnostic states that are active after the given location. 210 for (DiagStatePointsTy::iterator 211 I = Pos+1, E = DiagStatePoints.end(); I != E; ++I) { 212 GetCurDiagState()->setMappingInfo(Diag, MappingInfo); 213 } 214 215 // If the location corresponds to an existing point, just update its state. 216 if (Pos->Loc == Loc) { 217 GetCurDiagState()->setMappingInfo(Diag, MappingInfo); 218 return; 219 } 220 221 // Create a new state/point and fit it into the vector of DiagStatePoints 222 // so that the vector is always ordered according to location. 223 Pos->Loc.isBeforeInTranslationUnitThan(Loc); 224 DiagStates.push_back(*Pos->State); 225 DiagState *NewState = &DiagStates.back(); 226 GetCurDiagState()->setMappingInfo(Diag, MappingInfo); 227 DiagStatePoints.insert(Pos+1, DiagStatePoint(NewState, 228 FullSourceLoc(Loc, *SourceMgr))); 229 } 230 231 bool DiagnosticsEngine::setDiagnosticGroupMapping( 232 StringRef Group, diag::Mapping Map, SourceLocation Loc) 233 { 234 // Get the diagnostics in this group. 235 llvm::SmallVector<diag::kind, 8> GroupDiags; 236 if (Diags->getDiagnosticsInGroup(Group, GroupDiags)) 237 return true; 238 239 // Set the mapping. 240 for (unsigned i = 0, e = GroupDiags.size(); i != e; ++i) 241 setDiagnosticMapping(GroupDiags[i], Map, Loc); 242 243 return false; 244 } 245 246 void DiagnosticsEngine::setDiagnosticWarningAsError(diag::kind Diag, 247 bool Enabled) { 248 // If we are enabling this feature, just set the diagnostic mappings to map to 249 // errors. 250 if (Enabled) 251 setDiagnosticMapping(Diag, diag::MAP_ERROR, SourceLocation()); 252 253 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and 254 // potentially downgrade anything already mapped to be a warning. 255 DiagnosticMappingInfo &Info = GetCurDiagState()->getOrAddMappingInfo(Diag); 256 257 if (Info.getMapping() == diag::MAP_ERROR || 258 Info.getMapping() == diag::MAP_FATAL) 259 Info.setMapping(diag::MAP_WARNING); 260 261 Info.setNoWarningAsError(true); 262 } 263 264 bool DiagnosticsEngine::setDiagnosticGroupWarningAsError(StringRef Group, 265 bool Enabled) { 266 // If we are enabling this feature, just set the diagnostic mappings to map to 267 // errors. 268 if (Enabled) 269 return setDiagnosticGroupMapping(Group, diag::MAP_ERROR); 270 271 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and 272 // potentially downgrade anything already mapped to be a warning. 273 274 // Get the diagnostics in this group. 275 llvm::SmallVector<diag::kind, 8> GroupDiags; 276 if (Diags->getDiagnosticsInGroup(Group, GroupDiags)) 277 return true; 278 279 // Perform the mapping change. 280 for (unsigned i = 0, e = GroupDiags.size(); i != e; ++i) { 281 DiagnosticMappingInfo &Info = GetCurDiagState()->getOrAddMappingInfo( 282 GroupDiags[i]); 283 284 if (Info.getMapping() == diag::MAP_ERROR || 285 Info.getMapping() == diag::MAP_FATAL) 286 Info.setMapping(diag::MAP_WARNING); 287 288 Info.setNoWarningAsError(true); 289 } 290 291 return false; 292 } 293 294 void DiagnosticsEngine::setDiagnosticErrorAsFatal(diag::kind Diag, 295 bool Enabled) { 296 // If we are enabling this feature, just set the diagnostic mappings to map to 297 // errors. 298 if (Enabled) 299 setDiagnosticMapping(Diag, diag::MAP_FATAL, SourceLocation()); 300 301 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and 302 // potentially downgrade anything already mapped to be a warning. 303 DiagnosticMappingInfo &Info = GetCurDiagState()->getOrAddMappingInfo(Diag); 304 305 if (Info.getMapping() == diag::MAP_FATAL) 306 Info.setMapping(diag::MAP_ERROR); 307 308 Info.setNoErrorAsFatal(true); 309 } 310 311 bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group, 312 bool Enabled) { 313 // If we are enabling this feature, just set the diagnostic mappings to map to 314 // fatal errors. 315 if (Enabled) 316 return setDiagnosticGroupMapping(Group, diag::MAP_FATAL); 317 318 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and 319 // potentially downgrade anything already mapped to be an error. 320 321 // Get the diagnostics in this group. 322 llvm::SmallVector<diag::kind, 8> GroupDiags; 323 if (Diags->getDiagnosticsInGroup(Group, GroupDiags)) 324 return true; 325 326 // Perform the mapping change. 327 for (unsigned i = 0, e = GroupDiags.size(); i != e; ++i) { 328 DiagnosticMappingInfo &Info = GetCurDiagState()->getOrAddMappingInfo( 329 GroupDiags[i]); 330 331 if (Info.getMapping() == diag::MAP_FATAL) 332 Info.setMapping(diag::MAP_ERROR); 333 334 Info.setNoErrorAsFatal(true); 335 } 336 337 return false; 338 } 339 340 void DiagnosticsEngine::setMappingToAllDiagnostics(diag::Mapping Map, 341 SourceLocation Loc) { 342 // Get all the diagnostics. 343 llvm::SmallVector<diag::kind, 64> AllDiags; 344 Diags->getAllDiagnostics(AllDiags); 345 346 // Set the mapping. 347 for (unsigned i = 0, e = AllDiags.size(); i != e; ++i) 348 if (Diags->isBuiltinWarningOrExtension(AllDiags[i])) 349 setDiagnosticMapping(AllDiags[i], Map, Loc); 350 } 351 352 void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) { 353 assert(CurDiagID == ~0U && "Multiple diagnostics in flight at once!"); 354 355 CurDiagLoc = storedDiag.getLocation(); 356 CurDiagID = storedDiag.getID(); 357 NumDiagArgs = 0; 358 359 NumDiagRanges = storedDiag.range_size(); 360 assert(NumDiagRanges < DiagnosticsEngine::MaxRanges && 361 "Too many arguments to diagnostic!"); 362 unsigned i = 0; 363 for (StoredDiagnostic::range_iterator 364 RI = storedDiag.range_begin(), 365 RE = storedDiag.range_end(); RI != RE; ++RI) 366 DiagRanges[i++] = *RI; 367 368 assert(NumDiagRanges < DiagnosticsEngine::MaxFixItHints && 369 "Too many arguments to diagnostic!"); 370 NumDiagFixItHints = 0; 371 for (StoredDiagnostic::fixit_iterator 372 FI = storedDiag.fixit_begin(), 373 FE = storedDiag.fixit_end(); FI != FE; ++FI) 374 DiagFixItHints[NumDiagFixItHints++] = *FI; 375 376 assert(Client && "DiagnosticConsumer not set!"); 377 Level DiagLevel = storedDiag.getLevel(); 378 Diagnostic Info(this, storedDiag.getMessage()); 379 Client->HandleDiagnostic(DiagLevel, Info); 380 if (Client->IncludeInDiagnosticCounts()) { 381 if (DiagLevel == DiagnosticsEngine::Warning) 382 ++NumWarnings; 383 } 384 385 CurDiagID = ~0U; 386 } 387 388 bool DiagnosticsEngine::EmitCurrentDiagnostic() { 389 // Process the diagnostic, sending the accumulated information to the 390 // DiagnosticConsumer. 391 bool Emitted = ProcessDiag(); 392 393 // Clear out the current diagnostic object. 394 unsigned DiagID = CurDiagID; 395 Clear(); 396 397 // If there was a delayed diagnostic, emit it now. 398 if (DelayedDiagID && DelayedDiagID != DiagID) 399 ReportDelayed(); 400 401 return Emitted; 402 } 403 404 405 DiagnosticConsumer::~DiagnosticConsumer() {} 406 407 void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, 408 const Diagnostic &Info) { 409 if (!IncludeInDiagnosticCounts()) 410 return; 411 412 if (DiagLevel == DiagnosticsEngine::Warning) 413 ++NumWarnings; 414 else if (DiagLevel >= DiagnosticsEngine::Error) 415 ++NumErrors; 416 } 417 418 /// ModifierIs - Return true if the specified modifier matches specified string. 419 template <std::size_t StrLen> 420 static bool ModifierIs(const char *Modifier, unsigned ModifierLen, 421 const char (&Str)[StrLen]) { 422 return StrLen-1 == ModifierLen && !memcmp(Modifier, Str, StrLen-1); 423 } 424 425 /// ScanForward - Scans forward, looking for the given character, skipping 426 /// nested clauses and escaped characters. 427 static const char *ScanFormat(const char *I, const char *E, char Target) { 428 unsigned Depth = 0; 429 430 for ( ; I != E; ++I) { 431 if (Depth == 0 && *I == Target) return I; 432 if (Depth != 0 && *I == '}') Depth--; 433 434 if (*I == '%') { 435 I++; 436 if (I == E) break; 437 438 // Escaped characters get implicitly skipped here. 439 440 // Format specifier. 441 if (!isdigit(*I) && !ispunct(*I)) { 442 for (I++; I != E && !isdigit(*I) && *I != '{'; I++) ; 443 if (I == E) break; 444 if (*I == '{') 445 Depth++; 446 } 447 } 448 } 449 return E; 450 } 451 452 /// HandleSelectModifier - Handle the integer 'select' modifier. This is used 453 /// like this: %select{foo|bar|baz}2. This means that the integer argument 454 /// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'. 455 /// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'. 456 /// This is very useful for certain classes of variant diagnostics. 457 static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo, 458 const char *Argument, unsigned ArgumentLen, 459 SmallVectorImpl<char> &OutStr) { 460 const char *ArgumentEnd = Argument+ArgumentLen; 461 462 // Skip over 'ValNo' |'s. 463 while (ValNo) { 464 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|'); 465 assert(NextVal != ArgumentEnd && "Value for integer select modifier was" 466 " larger than the number of options in the diagnostic string!"); 467 Argument = NextVal+1; // Skip this string. 468 --ValNo; 469 } 470 471 // Get the end of the value. This is either the } or the |. 472 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|'); 473 474 // Recursively format the result of the select clause into the output string. 475 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr); 476 } 477 478 /// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the 479 /// letter 's' to the string if the value is not 1. This is used in cases like 480 /// this: "you idiot, you have %4 parameter%s4!". 481 static void HandleIntegerSModifier(unsigned ValNo, 482 SmallVectorImpl<char> &OutStr) { 483 if (ValNo != 1) 484 OutStr.push_back('s'); 485 } 486 487 /// HandleOrdinalModifier - Handle the integer 'ord' modifier. This 488 /// prints the ordinal form of the given integer, with 1 corresponding 489 /// to the first ordinal. Currently this is hard-coded to use the 490 /// English form. 491 static void HandleOrdinalModifier(unsigned ValNo, 492 SmallVectorImpl<char> &OutStr) { 493 assert(ValNo != 0 && "ValNo must be strictly positive!"); 494 495 llvm::raw_svector_ostream Out(OutStr); 496 497 // We could use text forms for the first N ordinals, but the numeric 498 // forms are actually nicer in diagnostics because they stand out. 499 Out << ValNo; 500 501 // It is critically important that we do this perfectly for 502 // user-written sequences with over 100 elements. 503 switch (ValNo % 100) { 504 case 11: 505 case 12: 506 case 13: 507 Out << "th"; return; 508 default: 509 switch (ValNo % 10) { 510 case 1: Out << "st"; return; 511 case 2: Out << "nd"; return; 512 case 3: Out << "rd"; return; 513 default: Out << "th"; return; 514 } 515 } 516 } 517 518 519 /// PluralNumber - Parse an unsigned integer and advance Start. 520 static unsigned PluralNumber(const char *&Start, const char *End) { 521 // Programming 101: Parse a decimal number :-) 522 unsigned Val = 0; 523 while (Start != End && *Start >= '0' && *Start <= '9') { 524 Val *= 10; 525 Val += *Start - '0'; 526 ++Start; 527 } 528 return Val; 529 } 530 531 /// TestPluralRange - Test if Val is in the parsed range. Modifies Start. 532 static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) { 533 if (*Start != '[') { 534 unsigned Ref = PluralNumber(Start, End); 535 return Ref == Val; 536 } 537 538 ++Start; 539 unsigned Low = PluralNumber(Start, End); 540 assert(*Start == ',' && "Bad plural expression syntax: expected ,"); 541 ++Start; 542 unsigned High = PluralNumber(Start, End); 543 assert(*Start == ']' && "Bad plural expression syntax: expected )"); 544 ++Start; 545 return Low <= Val && Val <= High; 546 } 547 548 /// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier. 549 static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) { 550 // Empty condition? 551 if (*Start == ':') 552 return true; 553 554 while (1) { 555 char C = *Start; 556 if (C == '%') { 557 // Modulo expression 558 ++Start; 559 unsigned Arg = PluralNumber(Start, End); 560 assert(*Start == '=' && "Bad plural expression syntax: expected ="); 561 ++Start; 562 unsigned ValMod = ValNo % Arg; 563 if (TestPluralRange(ValMod, Start, End)) 564 return true; 565 } else { 566 assert((C == '[' || (C >= '0' && C <= '9')) && 567 "Bad plural expression syntax: unexpected character"); 568 // Range expression 569 if (TestPluralRange(ValNo, Start, End)) 570 return true; 571 } 572 573 // Scan for next or-expr part. 574 Start = std::find(Start, End, ','); 575 if (Start == End) 576 break; 577 ++Start; 578 } 579 return false; 580 } 581 582 /// HandlePluralModifier - Handle the integer 'plural' modifier. This is used 583 /// for complex plural forms, or in languages where all plurals are complex. 584 /// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are 585 /// conditions that are tested in order, the form corresponding to the first 586 /// that applies being emitted. The empty condition is always true, making the 587 /// last form a default case. 588 /// Conditions are simple boolean expressions, where n is the number argument. 589 /// Here are the rules. 590 /// condition := expression | empty 591 /// empty := -> always true 592 /// expression := numeric [',' expression] -> logical or 593 /// numeric := range -> true if n in range 594 /// | '%' number '=' range -> true if n % number in range 595 /// range := number 596 /// | '[' number ',' number ']' -> ranges are inclusive both ends 597 /// 598 /// Here are some examples from the GNU gettext manual written in this form: 599 /// English: 600 /// {1:form0|:form1} 601 /// Latvian: 602 /// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0} 603 /// Gaeilge: 604 /// {1:form0|2:form1|:form2} 605 /// Romanian: 606 /// {1:form0|0,%100=[1,19]:form1|:form2} 607 /// Lithuanian: 608 /// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1} 609 /// Russian (requires repeated form): 610 /// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2} 611 /// Slovak 612 /// {1:form0|[2,4]:form1|:form2} 613 /// Polish (requires repeated form): 614 /// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2} 615 static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo, 616 const char *Argument, unsigned ArgumentLen, 617 SmallVectorImpl<char> &OutStr) { 618 const char *ArgumentEnd = Argument + ArgumentLen; 619 while (1) { 620 assert(Argument < ArgumentEnd && "Plural expression didn't match."); 621 const char *ExprEnd = Argument; 622 while (*ExprEnd != ':') { 623 assert(ExprEnd != ArgumentEnd && "Plural missing expression end"); 624 ++ExprEnd; 625 } 626 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) { 627 Argument = ExprEnd + 1; 628 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|'); 629 630 // Recursively format the result of the plural clause into the 631 // output string. 632 DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr); 633 return; 634 } 635 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1; 636 } 637 } 638 639 640 /// FormatDiagnostic - Format this diagnostic into a string, substituting the 641 /// formal arguments into the %0 slots. The result is appended onto the Str 642 /// array. 643 void Diagnostic:: 644 FormatDiagnostic(SmallVectorImpl<char> &OutStr) const { 645 if (!StoredDiagMessage.empty()) { 646 OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end()); 647 return; 648 } 649 650 StringRef Diag = 651 getDiags()->getDiagnosticIDs()->getDescription(getID()); 652 653 FormatDiagnostic(Diag.begin(), Diag.end(), OutStr); 654 } 655 656 void Diagnostic:: 657 FormatDiagnostic(const char *DiagStr, const char *DiagEnd, 658 SmallVectorImpl<char> &OutStr) const { 659 660 /// FormattedArgs - Keep track of all of the arguments formatted by 661 /// ConvertArgToString and pass them into subsequent calls to 662 /// ConvertArgToString, allowing the implementation to avoid redundancies in 663 /// obvious cases. 664 SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs; 665 666 /// QualTypeVals - Pass a vector of arrays so that QualType names can be 667 /// compared to see if more information is needed to be printed. 668 SmallVector<intptr_t, 2> QualTypeVals; 669 for (unsigned i = 0, e = getNumArgs(); i < e; ++i) 670 if (getArgKind(i) == DiagnosticsEngine::ak_qualtype) 671 QualTypeVals.push_back(getRawArg(i)); 672 673 while (DiagStr != DiagEnd) { 674 if (DiagStr[0] != '%') { 675 // Append non-%0 substrings to Str if we have one. 676 const char *StrEnd = std::find(DiagStr, DiagEnd, '%'); 677 OutStr.append(DiagStr, StrEnd); 678 DiagStr = StrEnd; 679 continue; 680 } else if (ispunct(DiagStr[1])) { 681 OutStr.push_back(DiagStr[1]); // %% -> %. 682 DiagStr += 2; 683 continue; 684 } 685 686 // Skip the %. 687 ++DiagStr; 688 689 // This must be a placeholder for a diagnostic argument. The format for a 690 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0". 691 // The digit is a number from 0-9 indicating which argument this comes from. 692 // The modifier is a string of digits from the set [-a-z]+, arguments is a 693 // brace enclosed string. 694 const char *Modifier = 0, *Argument = 0; 695 unsigned ModifierLen = 0, ArgumentLen = 0; 696 697 // Check to see if we have a modifier. If so eat it. 698 if (!isdigit(DiagStr[0])) { 699 Modifier = DiagStr; 700 while (DiagStr[0] == '-' || 701 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z')) 702 ++DiagStr; 703 ModifierLen = DiagStr-Modifier; 704 705 // If we have an argument, get it next. 706 if (DiagStr[0] == '{') { 707 ++DiagStr; // Skip {. 708 Argument = DiagStr; 709 710 DiagStr = ScanFormat(DiagStr, DiagEnd, '}'); 711 assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!"); 712 ArgumentLen = DiagStr-Argument; 713 ++DiagStr; // Skip }. 714 } 715 } 716 717 assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic"); 718 unsigned ArgNo = *DiagStr++ - '0'; 719 720 DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo); 721 722 switch (Kind) { 723 // ---- STRINGS ---- 724 case DiagnosticsEngine::ak_std_string: { 725 const std::string &S = getArgStdStr(ArgNo); 726 assert(ModifierLen == 0 && "No modifiers for strings yet"); 727 OutStr.append(S.begin(), S.end()); 728 break; 729 } 730 case DiagnosticsEngine::ak_c_string: { 731 const char *S = getArgCStr(ArgNo); 732 assert(ModifierLen == 0 && "No modifiers for strings yet"); 733 734 // Don't crash if get passed a null pointer by accident. 735 if (!S) 736 S = "(null)"; 737 738 OutStr.append(S, S + strlen(S)); 739 break; 740 } 741 // ---- INTEGERS ---- 742 case DiagnosticsEngine::ak_sint: { 743 int Val = getArgSInt(ArgNo); 744 745 if (ModifierIs(Modifier, ModifierLen, "select")) { 746 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen, 747 OutStr); 748 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 749 HandleIntegerSModifier(Val, OutStr); 750 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 751 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen, 752 OutStr); 753 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 754 HandleOrdinalModifier((unsigned)Val, OutStr); 755 } else { 756 assert(ModifierLen == 0 && "Unknown integer modifier"); 757 llvm::raw_svector_ostream(OutStr) << Val; 758 } 759 break; 760 } 761 case DiagnosticsEngine::ak_uint: { 762 unsigned Val = getArgUInt(ArgNo); 763 764 if (ModifierIs(Modifier, ModifierLen, "select")) { 765 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr); 766 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 767 HandleIntegerSModifier(Val, OutStr); 768 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 769 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen, 770 OutStr); 771 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 772 HandleOrdinalModifier(Val, OutStr); 773 } else { 774 assert(ModifierLen == 0 && "Unknown integer modifier"); 775 llvm::raw_svector_ostream(OutStr) << Val; 776 } 777 break; 778 } 779 // ---- NAMES and TYPES ---- 780 case DiagnosticsEngine::ak_identifierinfo: { 781 const IdentifierInfo *II = getArgIdentifier(ArgNo); 782 assert(ModifierLen == 0 && "No modifiers for strings yet"); 783 784 // Don't crash if get passed a null pointer by accident. 785 if (!II) { 786 const char *S = "(null)"; 787 OutStr.append(S, S + strlen(S)); 788 continue; 789 } 790 791 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\''; 792 break; 793 } 794 case DiagnosticsEngine::ak_qualtype: 795 case DiagnosticsEngine::ak_declarationname: 796 case DiagnosticsEngine::ak_nameddecl: 797 case DiagnosticsEngine::ak_nestednamespec: 798 case DiagnosticsEngine::ak_declcontext: 799 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo), 800 Modifier, ModifierLen, 801 Argument, ArgumentLen, 802 FormattedArgs.data(), FormattedArgs.size(), 803 OutStr, QualTypeVals); 804 break; 805 } 806 807 // Remember this argument info for subsequent formatting operations. Turn 808 // std::strings into a null terminated string to make it be the same case as 809 // all the other ones. 810 if (Kind != DiagnosticsEngine::ak_std_string) 811 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo))); 812 else 813 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string, 814 (intptr_t)getArgStdStr(ArgNo).c_str())); 815 816 } 817 } 818 819 StoredDiagnostic::StoredDiagnostic() { } 820 821 StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, 822 StringRef Message) 823 : ID(ID), Level(Level), Loc(), Message(Message) { } 824 825 StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, 826 const Diagnostic &Info) 827 : ID(Info.getID()), Level(Level) 828 { 829 assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) && 830 "Valid source location without setting a source manager for diagnostic"); 831 if (Info.getLocation().isValid()) 832 Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager()); 833 SmallString<64> Message; 834 Info.FormatDiagnostic(Message); 835 this->Message.assign(Message.begin(), Message.end()); 836 837 Ranges.reserve(Info.getNumRanges()); 838 for (unsigned I = 0, N = Info.getNumRanges(); I != N; ++I) 839 Ranges.push_back(Info.getRange(I)); 840 841 FixIts.reserve(Info.getNumFixItHints()); 842 for (unsigned I = 0, N = Info.getNumFixItHints(); I != N; ++I) 843 FixIts.push_back(Info.getFixItHint(I)); 844 } 845 846 StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, 847 StringRef Message, FullSourceLoc Loc, 848 ArrayRef<CharSourceRange> Ranges, 849 ArrayRef<FixItHint> Fixits) 850 : ID(ID), Level(Level), Loc(Loc), Message(Message) 851 { 852 this->Ranges.assign(Ranges.begin(), Ranges.end()); 853 this->FixIts.assign(FixIts.begin(), FixIts.end()); 854 } 855 856 StoredDiagnostic::~StoredDiagnostic() { } 857 858 /// IncludeInDiagnosticCounts - This method (whose default implementation 859 /// returns true) indicates whether the diagnostics handled by this 860 /// DiagnosticConsumer should be included in the number of diagnostics 861 /// reported by DiagnosticsEngine. 862 bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; } 863 864 void IgnoringDiagConsumer::anchor() { } 865 866 PartialDiagnostic::StorageAllocator::StorageAllocator() { 867 for (unsigned I = 0; I != NumCached; ++I) 868 FreeList[I] = Cached + I; 869 NumFreeListEntries = NumCached; 870 } 871 872 PartialDiagnostic::StorageAllocator::~StorageAllocator() { 873 // Don't assert if we are in a CrashRecovery context, as this invariant may 874 // be invalidated during a crash. 875 assert((NumFreeListEntries == NumCached || 876 llvm::CrashRecoveryContext::isRecoveringFromCrash()) && 877 "A partial is on the lamb"); 878 } 879