Diagnostic.cpp revision ef9b60ffed980864a8db26ad30344be429e58ff5
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/SmallVector.h" 18#include "llvm/Support/raw_ostream.h" 19#include "llvm/Support/CrashRecoveryContext.h" 20 21using namespace clang; 22 23static 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 SmallVectorImpl<intptr_t> &QualTypeVals) { 31 const char *Str = "<can't format argument>"; 32 Output.append(Str, Str+strlen(Str)); 33} 34 35 36DiagnosticsEngine::DiagnosticsEngine( 37 const llvm::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 61DiagnosticsEngine::~DiagnosticsEngine() { 62 if (OwnsDiagClient) 63 delete Client; 64} 65 66void DiagnosticsEngine::setClient(DiagnosticConsumer *client, 67 bool ShouldOwnClient) { 68 if (OwnsDiagClient && Client) 69 delete Client; 70 71 Client = client; 72 OwnsDiagClient = ShouldOwnClient; 73} 74 75void DiagnosticsEngine::pushMappings(SourceLocation Loc) { 76 DiagStateOnPushStack.push_back(GetCurDiagState()); 77} 78 79bool 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 91void 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 121void 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 131void DiagnosticsEngine::ReportDelayed() { 132 Report(DelayedDiagID) << DelayedDiagArg1 << DelayedDiagArg2; 133 DelayedDiagID = 0; 134 DelayedDiagArg1.clear(); 135 DelayedDiagArg2.clear(); 136} 137 138DiagnosticsEngine::DiagStatePointsTy::iterator 139DiagnosticsEngine::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. 164void 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 231bool 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 246bool DiagnosticsEngine::setDiagnosticGroupWarningAsError(StringRef Group, 247 bool Enabled) { 248 // If we are enabling this feature, just set the diagnostic mappings to map to 249 // errors. 250 if (Enabled) 251 return setDiagnosticGroupMapping(Group, diag::MAP_ERROR); 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. 255 256 // Get the diagnostics in this group. 257 llvm::SmallVector<diag::kind, 8> GroupDiags; 258 if (Diags->getDiagnosticsInGroup(Group, GroupDiags)) 259 return true; 260 261 // Perform the mapping change. 262 for (unsigned i = 0, e = GroupDiags.size(); i != e; ++i) { 263 DiagnosticMappingInfo &Info = GetCurDiagState()->getOrAddMappingInfo( 264 GroupDiags[i]); 265 266 if (Info.getMapping() == diag::MAP_ERROR || 267 Info.getMapping() == diag::MAP_FATAL) 268 Info.setMapping(diag::MAP_WARNING); 269 270 Info.setNoWarningAsError(true); 271 } 272 273 return false; 274} 275 276bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group, 277 bool Enabled) { 278 // If we are enabling this feature, just set the diagnostic mappings to map to 279 // fatal errors. 280 if (Enabled) 281 return setDiagnosticGroupMapping(Group, diag::MAP_FATAL); 282 283 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and 284 // potentially downgrade anything already mapped to be an error. 285 286 // Get the diagnostics in this group. 287 llvm::SmallVector<diag::kind, 8> GroupDiags; 288 if (Diags->getDiagnosticsInGroup(Group, GroupDiags)) 289 return true; 290 291 // Perform the mapping change. 292 for (unsigned i = 0, e = GroupDiags.size(); i != e; ++i) { 293 DiagnosticMappingInfo &Info = GetCurDiagState()->getOrAddMappingInfo( 294 GroupDiags[i]); 295 296 if (Info.getMapping() == diag::MAP_FATAL) 297 Info.setMapping(diag::MAP_ERROR); 298 299 Info.setNoErrorAsFatal(true); 300 } 301 302 return false; 303} 304 305void DiagnosticsEngine::setMappingToAllDiagnostics(diag::Mapping Map, 306 SourceLocation Loc) { 307 // Get all the diagnostics. 308 llvm::SmallVector<diag::kind, 64> AllDiags; 309 Diags->getAllDiagnostics(AllDiags); 310 311 // Set the mapping. 312 for (unsigned i = 0, e = AllDiags.size(); i != e; ++i) 313 if (Diags->isBuiltinWarningOrExtension(AllDiags[i])) 314 setDiagnosticMapping(AllDiags[i], Map, Loc); 315} 316 317void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) { 318 assert(CurDiagID == ~0U && "Multiple diagnostics in flight at once!"); 319 320 CurDiagLoc = storedDiag.getLocation(); 321 CurDiagID = storedDiag.getID(); 322 NumDiagArgs = 0; 323 324 NumDiagRanges = storedDiag.range_size(); 325 assert(NumDiagRanges < sizeof(DiagRanges)/sizeof(DiagRanges[0]) && 326 "Too many arguments to diagnostic!"); 327 unsigned i = 0; 328 for (StoredDiagnostic::range_iterator 329 RI = storedDiag.range_begin(), 330 RE = storedDiag.range_end(); RI != RE; ++RI) 331 DiagRanges[i++] = *RI; 332 333 FixItHints.clear(); 334 for (StoredDiagnostic::fixit_iterator 335 FI = storedDiag.fixit_begin(), 336 FE = storedDiag.fixit_end(); FI != FE; ++FI) 337 FixItHints.push_back(*FI); 338 339 assert(Client && "DiagnosticConsumer not set!"); 340 Level DiagLevel = storedDiag.getLevel(); 341 Diagnostic Info(this, storedDiag.getMessage()); 342 Client->HandleDiagnostic(DiagLevel, Info); 343 if (Client->IncludeInDiagnosticCounts()) { 344 if (DiagLevel == DiagnosticsEngine::Warning) 345 ++NumWarnings; 346 } 347 348 CurDiagID = ~0U; 349} 350 351void DiagnosticBuilder::FlushCounts() { 352 DiagObj->NumDiagArgs = NumArgs; 353 DiagObj->NumDiagRanges = NumRanges; 354} 355 356bool DiagnosticBuilder::Emit() { 357 // If DiagObj is null, then its soul was stolen by the copy ctor 358 // or the user called Emit(). 359 if (DiagObj == 0) return false; 360 361 // When emitting diagnostics, we set the final argument count into 362 // the DiagnosticsEngine object. 363 FlushCounts(); 364 365 // Process the diagnostic, sending the accumulated information to the 366 // DiagnosticConsumer. 367 bool Emitted = DiagObj->ProcessDiag(); 368 369 // Clear out the current diagnostic object. 370 unsigned DiagID = DiagObj->CurDiagID; 371 DiagObj->Clear(); 372 373 // If there was a delayed diagnostic, emit it now. 374 if (DiagObj->DelayedDiagID && DiagObj->DelayedDiagID != DiagID) 375 DiagObj->ReportDelayed(); 376 377 // This diagnostic is dead. 378 DiagObj = 0; 379 380 return Emitted; 381} 382 383 384DiagnosticConsumer::~DiagnosticConsumer() {} 385 386void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, 387 const Diagnostic &Info) { 388 if (!IncludeInDiagnosticCounts()) 389 return; 390 391 if (DiagLevel == DiagnosticsEngine::Warning) 392 ++NumWarnings; 393 else if (DiagLevel >= DiagnosticsEngine::Error) 394 ++NumErrors; 395} 396 397/// ModifierIs - Return true if the specified modifier matches specified string. 398template <std::size_t StrLen> 399static bool ModifierIs(const char *Modifier, unsigned ModifierLen, 400 const char (&Str)[StrLen]) { 401 return StrLen-1 == ModifierLen && !memcmp(Modifier, Str, StrLen-1); 402} 403 404/// ScanForward - Scans forward, looking for the given character, skipping 405/// nested clauses and escaped characters. 406static const char *ScanFormat(const char *I, const char *E, char Target) { 407 unsigned Depth = 0; 408 409 for ( ; I != E; ++I) { 410 if (Depth == 0 && *I == Target) return I; 411 if (Depth != 0 && *I == '}') Depth--; 412 413 if (*I == '%') { 414 I++; 415 if (I == E) break; 416 417 // Escaped characters get implicitly skipped here. 418 419 // Format specifier. 420 if (!isdigit(*I) && !ispunct(*I)) { 421 for (I++; I != E && !isdigit(*I) && *I != '{'; I++) ; 422 if (I == E) break; 423 if (*I == '{') 424 Depth++; 425 } 426 } 427 } 428 return E; 429} 430 431/// HandleSelectModifier - Handle the integer 'select' modifier. This is used 432/// like this: %select{foo|bar|baz}2. This means that the integer argument 433/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'. 434/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'. 435/// This is very useful for certain classes of variant diagnostics. 436static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo, 437 const char *Argument, unsigned ArgumentLen, 438 SmallVectorImpl<char> &OutStr) { 439 const char *ArgumentEnd = Argument+ArgumentLen; 440 441 // Skip over 'ValNo' |'s. 442 while (ValNo) { 443 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|'); 444 assert(NextVal != ArgumentEnd && "Value for integer select modifier was" 445 " larger than the number of options in the diagnostic string!"); 446 Argument = NextVal+1; // Skip this string. 447 --ValNo; 448 } 449 450 // Get the end of the value. This is either the } or the |. 451 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|'); 452 453 // Recursively format the result of the select clause into the output string. 454 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr); 455} 456 457/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the 458/// letter 's' to the string if the value is not 1. This is used in cases like 459/// this: "you idiot, you have %4 parameter%s4!". 460static void HandleIntegerSModifier(unsigned ValNo, 461 SmallVectorImpl<char> &OutStr) { 462 if (ValNo != 1) 463 OutStr.push_back('s'); 464} 465 466/// HandleOrdinalModifier - Handle the integer 'ord' modifier. This 467/// prints the ordinal form of the given integer, with 1 corresponding 468/// to the first ordinal. Currently this is hard-coded to use the 469/// English form. 470static void HandleOrdinalModifier(unsigned ValNo, 471 SmallVectorImpl<char> &OutStr) { 472 assert(ValNo != 0 && "ValNo must be strictly positive!"); 473 474 llvm::raw_svector_ostream Out(OutStr); 475 476 // We could use text forms for the first N ordinals, but the numeric 477 // forms are actually nicer in diagnostics because they stand out. 478 Out << ValNo; 479 480 // It is critically important that we do this perfectly for 481 // user-written sequences with over 100 elements. 482 switch (ValNo % 100) { 483 case 11: 484 case 12: 485 case 13: 486 Out << "th"; return; 487 default: 488 switch (ValNo % 10) { 489 case 1: Out << "st"; return; 490 case 2: Out << "nd"; return; 491 case 3: Out << "rd"; return; 492 default: Out << "th"; return; 493 } 494 } 495} 496 497 498/// PluralNumber - Parse an unsigned integer and advance Start. 499static unsigned PluralNumber(const char *&Start, const char *End) { 500 // Programming 101: Parse a decimal number :-) 501 unsigned Val = 0; 502 while (Start != End && *Start >= '0' && *Start <= '9') { 503 Val *= 10; 504 Val += *Start - '0'; 505 ++Start; 506 } 507 return Val; 508} 509 510/// TestPluralRange - Test if Val is in the parsed range. Modifies Start. 511static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) { 512 if (*Start != '[') { 513 unsigned Ref = PluralNumber(Start, End); 514 return Ref == Val; 515 } 516 517 ++Start; 518 unsigned Low = PluralNumber(Start, End); 519 assert(*Start == ',' && "Bad plural expression syntax: expected ,"); 520 ++Start; 521 unsigned High = PluralNumber(Start, End); 522 assert(*Start == ']' && "Bad plural expression syntax: expected )"); 523 ++Start; 524 return Low <= Val && Val <= High; 525} 526 527/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier. 528static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) { 529 // Empty condition? 530 if (*Start == ':') 531 return true; 532 533 while (1) { 534 char C = *Start; 535 if (C == '%') { 536 // Modulo expression 537 ++Start; 538 unsigned Arg = PluralNumber(Start, End); 539 assert(*Start == '=' && "Bad plural expression syntax: expected ="); 540 ++Start; 541 unsigned ValMod = ValNo % Arg; 542 if (TestPluralRange(ValMod, Start, End)) 543 return true; 544 } else { 545 assert((C == '[' || (C >= '0' && C <= '9')) && 546 "Bad plural expression syntax: unexpected character"); 547 // Range expression 548 if (TestPluralRange(ValNo, Start, End)) 549 return true; 550 } 551 552 // Scan for next or-expr part. 553 Start = std::find(Start, End, ','); 554 if (Start == End) 555 break; 556 ++Start; 557 } 558 return false; 559} 560 561/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used 562/// for complex plural forms, or in languages where all plurals are complex. 563/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are 564/// conditions that are tested in order, the form corresponding to the first 565/// that applies being emitted. The empty condition is always true, making the 566/// last form a default case. 567/// Conditions are simple boolean expressions, where n is the number argument. 568/// Here are the rules. 569/// condition := expression | empty 570/// empty := -> always true 571/// expression := numeric [',' expression] -> logical or 572/// numeric := range -> true if n in range 573/// | '%' number '=' range -> true if n % number in range 574/// range := number 575/// | '[' number ',' number ']' -> ranges are inclusive both ends 576/// 577/// Here are some examples from the GNU gettext manual written in this form: 578/// English: 579/// {1:form0|:form1} 580/// Latvian: 581/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0} 582/// Gaeilge: 583/// {1:form0|2:form1|:form2} 584/// Romanian: 585/// {1:form0|0,%100=[1,19]:form1|:form2} 586/// Lithuanian: 587/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1} 588/// Russian (requires repeated form): 589/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2} 590/// Slovak 591/// {1:form0|[2,4]:form1|:form2} 592/// Polish (requires repeated form): 593/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2} 594static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo, 595 const char *Argument, unsigned ArgumentLen, 596 SmallVectorImpl<char> &OutStr) { 597 const char *ArgumentEnd = Argument + ArgumentLen; 598 while (1) { 599 assert(Argument < ArgumentEnd && "Plural expression didn't match."); 600 const char *ExprEnd = Argument; 601 while (*ExprEnd != ':') { 602 assert(ExprEnd != ArgumentEnd && "Plural missing expression end"); 603 ++ExprEnd; 604 } 605 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) { 606 Argument = ExprEnd + 1; 607 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|'); 608 609 // Recursively format the result of the plural clause into the 610 // output string. 611 DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr); 612 return; 613 } 614 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1; 615 } 616} 617 618 619/// FormatDiagnostic - Format this diagnostic into a string, substituting the 620/// formal arguments into the %0 slots. The result is appended onto the Str 621/// array. 622void Diagnostic:: 623FormatDiagnostic(SmallVectorImpl<char> &OutStr) const { 624 if (!StoredDiagMessage.empty()) { 625 OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end()); 626 return; 627 } 628 629 StringRef Diag = 630 getDiags()->getDiagnosticIDs()->getDescription(getID()); 631 632 FormatDiagnostic(Diag.begin(), Diag.end(), OutStr); 633} 634 635void Diagnostic:: 636FormatDiagnostic(const char *DiagStr, const char *DiagEnd, 637 SmallVectorImpl<char> &OutStr) const { 638 639 /// FormattedArgs - Keep track of all of the arguments formatted by 640 /// ConvertArgToString and pass them into subsequent calls to 641 /// ConvertArgToString, allowing the implementation to avoid redundancies in 642 /// obvious cases. 643 SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs; 644 645 /// QualTypeVals - Pass a vector of arrays so that QualType names can be 646 /// compared to see if more information is needed to be printed. 647 SmallVector<intptr_t, 2> QualTypeVals; 648 for (unsigned i = 0, e = getNumArgs(); i < e; ++i) 649 if (getArgKind(i) == DiagnosticsEngine::ak_qualtype) 650 QualTypeVals.push_back(getRawArg(i)); 651 652 while (DiagStr != DiagEnd) { 653 if (DiagStr[0] != '%') { 654 // Append non-%0 substrings to Str if we have one. 655 const char *StrEnd = std::find(DiagStr, DiagEnd, '%'); 656 OutStr.append(DiagStr, StrEnd); 657 DiagStr = StrEnd; 658 continue; 659 } else if (ispunct(DiagStr[1])) { 660 OutStr.push_back(DiagStr[1]); // %% -> %. 661 DiagStr += 2; 662 continue; 663 } 664 665 // Skip the %. 666 ++DiagStr; 667 668 // This must be a placeholder for a diagnostic argument. The format for a 669 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0". 670 // The digit is a number from 0-9 indicating which argument this comes from. 671 // The modifier is a string of digits from the set [-a-z]+, arguments is a 672 // brace enclosed string. 673 const char *Modifier = 0, *Argument = 0; 674 unsigned ModifierLen = 0, ArgumentLen = 0; 675 676 // Check to see if we have a modifier. If so eat it. 677 if (!isdigit(DiagStr[0])) { 678 Modifier = DiagStr; 679 while (DiagStr[0] == '-' || 680 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z')) 681 ++DiagStr; 682 ModifierLen = DiagStr-Modifier; 683 684 // If we have an argument, get it next. 685 if (DiagStr[0] == '{') { 686 ++DiagStr; // Skip {. 687 Argument = DiagStr; 688 689 DiagStr = ScanFormat(DiagStr, DiagEnd, '}'); 690 assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!"); 691 ArgumentLen = DiagStr-Argument; 692 ++DiagStr; // Skip }. 693 } 694 } 695 696 assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic"); 697 unsigned ArgNo = *DiagStr++ - '0'; 698 699 DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo); 700 701 switch (Kind) { 702 // ---- STRINGS ---- 703 case DiagnosticsEngine::ak_std_string: { 704 const std::string &S = getArgStdStr(ArgNo); 705 assert(ModifierLen == 0 && "No modifiers for strings yet"); 706 OutStr.append(S.begin(), S.end()); 707 break; 708 } 709 case DiagnosticsEngine::ak_c_string: { 710 const char *S = getArgCStr(ArgNo); 711 assert(ModifierLen == 0 && "No modifiers for strings yet"); 712 713 // Don't crash if get passed a null pointer by accident. 714 if (!S) 715 S = "(null)"; 716 717 OutStr.append(S, S + strlen(S)); 718 break; 719 } 720 // ---- INTEGERS ---- 721 case DiagnosticsEngine::ak_sint: { 722 int Val = getArgSInt(ArgNo); 723 724 if (ModifierIs(Modifier, ModifierLen, "select")) { 725 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen, 726 OutStr); 727 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 728 HandleIntegerSModifier(Val, OutStr); 729 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 730 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen, 731 OutStr); 732 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 733 HandleOrdinalModifier((unsigned)Val, OutStr); 734 } else { 735 assert(ModifierLen == 0 && "Unknown integer modifier"); 736 llvm::raw_svector_ostream(OutStr) << Val; 737 } 738 break; 739 } 740 case DiagnosticsEngine::ak_uint: { 741 unsigned Val = getArgUInt(ArgNo); 742 743 if (ModifierIs(Modifier, ModifierLen, "select")) { 744 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr); 745 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 746 HandleIntegerSModifier(Val, OutStr); 747 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 748 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen, 749 OutStr); 750 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 751 HandleOrdinalModifier(Val, OutStr); 752 } else { 753 assert(ModifierLen == 0 && "Unknown integer modifier"); 754 llvm::raw_svector_ostream(OutStr) << Val; 755 } 756 break; 757 } 758 // ---- NAMES and TYPES ---- 759 case DiagnosticsEngine::ak_identifierinfo: { 760 const IdentifierInfo *II = getArgIdentifier(ArgNo); 761 assert(ModifierLen == 0 && "No modifiers for strings yet"); 762 763 // Don't crash if get passed a null pointer by accident. 764 if (!II) { 765 const char *S = "(null)"; 766 OutStr.append(S, S + strlen(S)); 767 continue; 768 } 769 770 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\''; 771 break; 772 } 773 case DiagnosticsEngine::ak_qualtype: 774 case DiagnosticsEngine::ak_declarationname: 775 case DiagnosticsEngine::ak_nameddecl: 776 case DiagnosticsEngine::ak_nestednamespec: 777 case DiagnosticsEngine::ak_declcontext: 778 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo), 779 Modifier, ModifierLen, 780 Argument, ArgumentLen, 781 FormattedArgs.data(), FormattedArgs.size(), 782 OutStr, QualTypeVals); 783 break; 784 } 785 786 // Remember this argument info for subsequent formatting operations. Turn 787 // std::strings into a null terminated string to make it be the same case as 788 // all the other ones. 789 if (Kind != DiagnosticsEngine::ak_std_string) 790 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo))); 791 else 792 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string, 793 (intptr_t)getArgStdStr(ArgNo).c_str())); 794 795 } 796} 797 798StoredDiagnostic::StoredDiagnostic() { } 799 800StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, 801 StringRef Message) 802 : ID(ID), Level(Level), Loc(), Message(Message) { } 803 804StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, 805 const Diagnostic &Info) 806 : ID(Info.getID()), Level(Level) 807{ 808 assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) && 809 "Valid source location without setting a source manager for diagnostic"); 810 if (Info.getLocation().isValid()) 811 Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager()); 812 llvm::SmallString<64> Message; 813 Info.FormatDiagnostic(Message); 814 this->Message.assign(Message.begin(), Message.end()); 815 816 Ranges.reserve(Info.getNumRanges()); 817 for (unsigned I = 0, N = Info.getNumRanges(); I != N; ++I) 818 Ranges.push_back(Info.getRange(I)); 819 820 FixIts.reserve(Info.getNumFixItHints()); 821 for (unsigned I = 0, N = Info.getNumFixItHints(); I != N; ++I) 822 FixIts.push_back(Info.getFixItHint(I)); 823} 824 825StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, 826 StringRef Message, FullSourceLoc Loc, 827 ArrayRef<CharSourceRange> Ranges, 828 ArrayRef<FixItHint> Fixits) 829 : ID(ID), Level(Level), Loc(Loc), Message(Message) 830{ 831 this->Ranges.assign(Ranges.begin(), Ranges.end()); 832 this->FixIts.assign(FixIts.begin(), FixIts.end()); 833} 834 835StoredDiagnostic::~StoredDiagnostic() { } 836 837/// IncludeInDiagnosticCounts - This method (whose default implementation 838/// returns true) indicates whether the diagnostics handled by this 839/// DiagnosticConsumer should be included in the number of diagnostics 840/// reported by DiagnosticsEngine. 841bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; } 842 843void IgnoringDiagConsumer::anchor() { } 844 845PartialDiagnosticStorageAllocator::PartialDiagnosticStorageAllocator() { 846 for (unsigned I = 0; I != NumCached; ++I) 847 FreeList[I] = Cached + I; 848 NumFreeListEntries = NumCached; 849} 850 851PartialDiagnosticStorageAllocator::~PartialDiagnosticStorageAllocator() { 852 // Don't assert if we are in a CrashRecovery context, as this 853 // invariant may be invalidated during a crash. 854 assert((NumFreeListEntries == NumCached || llvm::CrashRecoveryContext::isRecoveringFromCrash()) && "A partial is on the lamb"); 855} 856