Diagnostic.cpp revision 0a76aae8c03cb7dd7bdbe683485560afaf695959
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/AST/ASTDiagnostic.h" 15#include "clang/Analysis/AnalysisDiagnostic.h" 16#include "clang/Basic/Diagnostic.h" 17#include "clang/Basic/FileManager.h" 18#include "clang/Basic/IdentifierTable.h" 19#include "clang/Basic/PartialDiagnostic.h" 20#include "clang/Basic/SourceLocation.h" 21#include "clang/Basic/SourceManager.h" 22#include "clang/Driver/DriverDiagnostic.h" 23#include "clang/Frontend/FrontendDiagnostic.h" 24#include "clang/Lex/LexDiagnostic.h" 25#include "clang/Parse/ParseDiagnostic.h" 26#include "clang/Sema/SemaDiagnostic.h" 27#include "llvm/ADT/SmallVector.h" 28#include "llvm/ADT/StringExtras.h" 29#include "llvm/Support/MemoryBuffer.h" 30#include "llvm/Support/raw_ostream.h" 31 32#include <vector> 33#include <map> 34#include <cstring> 35using namespace clang; 36 37//===----------------------------------------------------------------------===// 38// Builtin Diagnostic information 39//===----------------------------------------------------------------------===// 40 41// Diagnostic classes. 42enum { 43 CLASS_NOTE = 0x01, 44 CLASS_WARNING = 0x02, 45 CLASS_EXTENSION = 0x03, 46 CLASS_ERROR = 0x04 47}; 48 49struct StaticDiagInfoRec { 50 unsigned short DiagID; 51 unsigned Mapping : 3; 52 unsigned Class : 3; 53 bool SFINAE : 1; 54 unsigned Category : 5; 55 56 const char *Description; 57 const char *OptionGroup; 58 59 bool operator<(const StaticDiagInfoRec &RHS) const { 60 return DiagID < RHS.DiagID; 61 } 62 bool operator>(const StaticDiagInfoRec &RHS) const { 63 return DiagID > RHS.DiagID; 64 } 65}; 66 67static const StaticDiagInfoRec StaticDiagInfo[] = { 68#define DIAG(ENUM,CLASS,DEFAULT_MAPPING,DESC,GROUP,SFINAE, CATEGORY) \ 69 { diag::ENUM, DEFAULT_MAPPING, CLASS, SFINAE, CATEGORY, DESC, GROUP }, 70#include "clang/Basic/DiagnosticCommonKinds.inc" 71#include "clang/Basic/DiagnosticDriverKinds.inc" 72#include "clang/Basic/DiagnosticFrontendKinds.inc" 73#include "clang/Basic/DiagnosticLexKinds.inc" 74#include "clang/Basic/DiagnosticParseKinds.inc" 75#include "clang/Basic/DiagnosticASTKinds.inc" 76#include "clang/Basic/DiagnosticSemaKinds.inc" 77#include "clang/Basic/DiagnosticAnalysisKinds.inc" 78 { 0, 0, 0, 0, 0, 0, 0} 79}; 80#undef DIAG 81 82/// GetDiagInfo - Return the StaticDiagInfoRec entry for the specified DiagID, 83/// or null if the ID is invalid. 84static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) { 85 unsigned NumDiagEntries = sizeof(StaticDiagInfo)/sizeof(StaticDiagInfo[0])-1; 86 87 // If assertions are enabled, verify that the StaticDiagInfo array is sorted. 88#ifndef NDEBUG 89 static bool IsFirst = true; 90 if (IsFirst) { 91 for (unsigned i = 1; i != NumDiagEntries; ++i) { 92 assert(StaticDiagInfo[i-1].DiagID != StaticDiagInfo[i].DiagID && 93 "Diag ID conflict, the enums at the start of clang::diag (in " 94 "Diagnostic.h) probably need to be increased"); 95 96 assert(StaticDiagInfo[i-1] < StaticDiagInfo[i] && 97 "Improperly sorted diag info"); 98 } 99 IsFirst = false; 100 } 101#endif 102 103 // Search the diagnostic table with a binary search. 104 StaticDiagInfoRec Find = { DiagID, 0, 0, 0, 0, 0, 0 }; 105 106 const StaticDiagInfoRec *Found = 107 std::lower_bound(StaticDiagInfo, StaticDiagInfo + NumDiagEntries, Find); 108 if (Found == StaticDiagInfo + NumDiagEntries || 109 Found->DiagID != DiagID) 110 return 0; 111 112 return Found; 113} 114 115static unsigned GetDefaultDiagMapping(unsigned DiagID) { 116 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 117 return Info->Mapping; 118 return diag::MAP_FATAL; 119} 120 121/// getWarningOptionForDiag - Return the lowest-level warning option that 122/// enables the specified diagnostic. If there is no -Wfoo flag that controls 123/// the diagnostic, this returns null. 124const char *Diagnostic::getWarningOptionForDiag(unsigned DiagID) { 125 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 126 return Info->OptionGroup; 127 return 0; 128} 129 130/// getWarningOptionForDiag - Return the category number that a specified 131/// DiagID belongs to, or 0 if no category. 132unsigned Diagnostic::getCategoryNumberForDiag(unsigned DiagID) { 133 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 134 return Info->Category; 135 return 0; 136} 137 138/// getCategoryNameFromID - Given a category ID, return the name of the 139/// category, an empty string if CategoryID is zero, or null if CategoryID is 140/// invalid. 141const char *Diagnostic::getCategoryNameFromID(unsigned CategoryID) { 142 // Second the table of options, sorted by name for fast binary lookup. 143 static const char *CategoryNameTable[] = { 144#define GET_CATEGORY_TABLE 145#define CATEGORY(X) X, 146#include "clang/Basic/DiagnosticGroups.inc" 147#undef GET_CATEGORY_TABLE 148 "<<END>>" 149 }; 150 static const size_t CategoryNameTableSize = 151 sizeof(CategoryNameTable) / sizeof(CategoryNameTable[0])-1; 152 153 if (CategoryID >= CategoryNameTableSize) return 0; 154 return CategoryNameTable[CategoryID]; 155} 156 157 158 159Diagnostic::SFINAEResponse 160Diagnostic::getDiagnosticSFINAEResponse(unsigned DiagID) { 161 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) { 162 if (!Info->SFINAE) 163 return SFINAE_Report; 164 165 if (Info->Class == CLASS_ERROR) 166 return SFINAE_SubstitutionFailure; 167 168 // Suppress notes, warnings, and extensions; 169 return SFINAE_Suppress; 170 } 171 172 return SFINAE_Report; 173} 174 175/// getDiagClass - Return the class field of the diagnostic. 176/// 177static unsigned getBuiltinDiagClass(unsigned DiagID) { 178 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 179 return Info->Class; 180 return ~0U; 181} 182 183//===----------------------------------------------------------------------===// 184// Custom Diagnostic information 185//===----------------------------------------------------------------------===// 186 187namespace clang { 188 namespace diag { 189 class CustomDiagInfo { 190 typedef std::pair<Diagnostic::Level, std::string> DiagDesc; 191 std::vector<DiagDesc> DiagInfo; 192 std::map<DiagDesc, unsigned> DiagIDs; 193 public: 194 195 /// getDescription - Return the description of the specified custom 196 /// diagnostic. 197 const char *getDescription(unsigned DiagID) const { 198 assert(this && DiagID-DIAG_UPPER_LIMIT < DiagInfo.size() && 199 "Invalid diagnosic ID"); 200 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].second.c_str(); 201 } 202 203 /// getLevel - Return the level of the specified custom diagnostic. 204 Diagnostic::Level getLevel(unsigned DiagID) const { 205 assert(this && DiagID-DIAG_UPPER_LIMIT < DiagInfo.size() && 206 "Invalid diagnosic ID"); 207 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].first; 208 } 209 210 unsigned getOrCreateDiagID(Diagnostic::Level L, llvm::StringRef Message, 211 Diagnostic &Diags) { 212 DiagDesc D(L, Message); 213 // Check to see if it already exists. 214 std::map<DiagDesc, unsigned>::iterator I = DiagIDs.lower_bound(D); 215 if (I != DiagIDs.end() && I->first == D) 216 return I->second; 217 218 // If not, assign a new ID. 219 unsigned ID = DiagInfo.size()+DIAG_UPPER_LIMIT; 220 DiagIDs.insert(std::make_pair(D, ID)); 221 DiagInfo.push_back(D); 222 return ID; 223 } 224 }; 225 226 } // end diag namespace 227} // end clang namespace 228 229 230//===----------------------------------------------------------------------===// 231// Common Diagnostic implementation 232//===----------------------------------------------------------------------===// 233 234static void DummyArgToStringFn(Diagnostic::ArgumentKind AK, intptr_t QT, 235 const char *Modifier, unsigned ML, 236 const char *Argument, unsigned ArgLen, 237 const Diagnostic::ArgumentValue *PrevArgs, 238 unsigned NumPrevArgs, 239 llvm::SmallVectorImpl<char> &Output, 240 void *Cookie) { 241 const char *Str = "<can't format argument>"; 242 Output.append(Str, Str+strlen(Str)); 243} 244 245 246Diagnostic::Diagnostic(DiagnosticClient *client) : Client(client) { 247 AllExtensionsSilenced = 0; 248 IgnoreAllWarnings = false; 249 WarningsAsErrors = false; 250 ErrorsAsFatal = false; 251 SuppressSystemWarnings = false; 252 SuppressAllDiagnostics = false; 253 ShowOverloads = Ovl_All; 254 ExtBehavior = Ext_Ignore; 255 256 ErrorOccurred = false; 257 FatalErrorOccurred = false; 258 ErrorLimit = 0; 259 TemplateBacktraceLimit = 0; 260 261 NumWarnings = 0; 262 NumErrors = 0; 263 NumErrorsSuppressed = 0; 264 CustomDiagInfo = 0; 265 CurDiagID = ~0U; 266 LastDiagLevel = Ignored; 267 268 ArgToStringFn = DummyArgToStringFn; 269 ArgToStringCookie = 0; 270 271 DelayedDiagID = 0; 272 273 // Set all mappings to 'unset'. 274 DiagMappings BlankDiags(diag::DIAG_UPPER_LIMIT/2, 0); 275 DiagMappingsStack.push_back(BlankDiags); 276} 277 278Diagnostic::~Diagnostic() { 279 delete CustomDiagInfo; 280} 281 282 283void Diagnostic::pushMappings() { 284 // Avoids undefined behavior when the stack has to resize. 285 DiagMappingsStack.reserve(DiagMappingsStack.size() + 1); 286 DiagMappingsStack.push_back(DiagMappingsStack.back()); 287} 288 289bool Diagnostic::popMappings() { 290 if (DiagMappingsStack.size() == 1) 291 return false; 292 293 DiagMappingsStack.pop_back(); 294 return true; 295} 296 297/// getCustomDiagID - Return an ID for a diagnostic with the specified message 298/// and level. If this is the first request for this diagnosic, it is 299/// registered and created, otherwise the existing ID is returned. 300unsigned Diagnostic::getCustomDiagID(Level L, llvm::StringRef Message) { 301 if (CustomDiagInfo == 0) 302 CustomDiagInfo = new diag::CustomDiagInfo(); 303 return CustomDiagInfo->getOrCreateDiagID(L, Message, *this); 304} 305 306 307/// isBuiltinWarningOrExtension - Return true if the unmapped diagnostic 308/// level of the specified diagnostic ID is a Warning or Extension. 309/// This only works on builtin diagnostics, not custom ones, and is not legal to 310/// call on NOTEs. 311bool Diagnostic::isBuiltinWarningOrExtension(unsigned DiagID) { 312 return DiagID < diag::DIAG_UPPER_LIMIT && 313 getBuiltinDiagClass(DiagID) != CLASS_ERROR; 314} 315 316/// \brief Determine whether the given built-in diagnostic ID is a 317/// Note. 318bool Diagnostic::isBuiltinNote(unsigned DiagID) { 319 return DiagID < diag::DIAG_UPPER_LIMIT && 320 getBuiltinDiagClass(DiagID) == CLASS_NOTE; 321} 322 323/// isBuiltinExtensionDiag - Determine whether the given built-in diagnostic 324/// ID is for an extension of some sort. This also returns EnabledByDefault, 325/// which is set to indicate whether the diagnostic is ignored by default (in 326/// which case -pedantic enables it) or treated as a warning/error by default. 327/// 328bool Diagnostic::isBuiltinExtensionDiag(unsigned DiagID, 329 bool &EnabledByDefault) { 330 if (DiagID >= diag::DIAG_UPPER_LIMIT || 331 getBuiltinDiagClass(DiagID) != CLASS_EXTENSION) 332 return false; 333 334 EnabledByDefault = StaticDiagInfo[DiagID].Mapping != diag::MAP_IGNORE; 335 return true; 336} 337 338 339/// getDescription - Given a diagnostic ID, return a description of the 340/// issue. 341const char *Diagnostic::getDescription(unsigned DiagID) const { 342 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 343 return Info->Description; 344 return CustomDiagInfo->getDescription(DiagID); 345} 346 347void Diagnostic::SetDelayedDiagnostic(unsigned DiagID, llvm::StringRef Arg1, 348 llvm::StringRef Arg2) { 349 if (DelayedDiagID) 350 return; 351 352 DelayedDiagID = DiagID; 353 DelayedDiagArg1 = Arg1.str(); 354 DelayedDiagArg2 = Arg2.str(); 355} 356 357void Diagnostic::ReportDelayed() { 358 Report(DelayedDiagID) << DelayedDiagArg1 << DelayedDiagArg2; 359 DelayedDiagID = 0; 360 DelayedDiagArg1.clear(); 361 DelayedDiagArg2.clear(); 362} 363 364/// getDiagnosticLevel - Based on the way the client configured the Diagnostic 365/// object, classify the specified diagnostic ID into a Level, consumable by 366/// the DiagnosticClient. 367Diagnostic::Level Diagnostic::getDiagnosticLevel(unsigned DiagID) const { 368 // Handle custom diagnostics, which cannot be mapped. 369 if (DiagID >= diag::DIAG_UPPER_LIMIT) 370 return CustomDiagInfo->getLevel(DiagID); 371 372 unsigned DiagClass = getBuiltinDiagClass(DiagID); 373 assert(DiagClass != CLASS_NOTE && "Cannot get diagnostic level of a note!"); 374 return getDiagnosticLevel(DiagID, DiagClass); 375} 376 377/// getDiagnosticLevel - Based on the way the client configured the Diagnostic 378/// object, classify the specified diagnostic ID into a Level, consumable by 379/// the DiagnosticClient. 380Diagnostic::Level 381Diagnostic::getDiagnosticLevel(unsigned DiagID, unsigned DiagClass) const { 382 // Specific non-error diagnostics may be mapped to various levels from ignored 383 // to error. Errors can only be mapped to fatal. 384 Diagnostic::Level Result = Diagnostic::Fatal; 385 386 // Get the mapping information, if unset, compute it lazily. 387 unsigned MappingInfo = getDiagnosticMappingInfo((diag::kind)DiagID); 388 if (MappingInfo == 0) { 389 MappingInfo = GetDefaultDiagMapping(DiagID); 390 setDiagnosticMappingInternal(DiagID, MappingInfo, false); 391 } 392 393 switch (MappingInfo & 7) { 394 default: assert(0 && "Unknown mapping!"); 395 case diag::MAP_IGNORE: 396 // Ignore this, unless this is an extension diagnostic and we're mapping 397 // them onto warnings or errors. 398 if (!isBuiltinExtensionDiag(DiagID) || // Not an extension 399 ExtBehavior == Ext_Ignore || // Extensions ignored anyway 400 (MappingInfo & 8) != 0) // User explicitly mapped it. 401 return Diagnostic::Ignored; 402 Result = Diagnostic::Warning; 403 if (ExtBehavior == Ext_Error) Result = Diagnostic::Error; 404 if (Result == Diagnostic::Error && ErrorsAsFatal) 405 Result = Diagnostic::Fatal; 406 break; 407 case diag::MAP_ERROR: 408 Result = Diagnostic::Error; 409 if (ErrorsAsFatal) 410 Result = Diagnostic::Fatal; 411 break; 412 case diag::MAP_FATAL: 413 Result = Diagnostic::Fatal; 414 break; 415 case diag::MAP_WARNING: 416 // If warnings are globally mapped to ignore or error, do it. 417 if (IgnoreAllWarnings) 418 return Diagnostic::Ignored; 419 420 Result = Diagnostic::Warning; 421 422 // If this is an extension diagnostic and we're in -pedantic-error mode, and 423 // if the user didn't explicitly map it, upgrade to an error. 424 if (ExtBehavior == Ext_Error && 425 (MappingInfo & 8) == 0 && 426 isBuiltinExtensionDiag(DiagID)) 427 Result = Diagnostic::Error; 428 429 if (WarningsAsErrors) 430 Result = Diagnostic::Error; 431 if (Result == Diagnostic::Error && ErrorsAsFatal) 432 Result = Diagnostic::Fatal; 433 break; 434 435 case diag::MAP_WARNING_NO_WERROR: 436 // Diagnostics specified with -Wno-error=foo should be set to warnings, but 437 // not be adjusted by -Werror or -pedantic-errors. 438 Result = Diagnostic::Warning; 439 440 // If warnings are globally mapped to ignore or error, do it. 441 if (IgnoreAllWarnings) 442 return Diagnostic::Ignored; 443 444 break; 445 446 case diag::MAP_ERROR_NO_WFATAL: 447 // Diagnostics specified as -Wno-fatal-error=foo should be errors, but 448 // unaffected by -Wfatal-errors. 449 Result = Diagnostic::Error; 450 break; 451 } 452 453 // Okay, we're about to return this as a "diagnostic to emit" one last check: 454 // if this is any sort of extension warning, and if we're in an __extension__ 455 // block, silence it. 456 if (AllExtensionsSilenced && isBuiltinExtensionDiag(DiagID)) 457 return Diagnostic::Ignored; 458 459 return Result; 460} 461 462struct WarningOption { 463 const char *Name; 464 const short *Members; 465 const short *SubGroups; 466}; 467 468#define GET_DIAG_ARRAYS 469#include "clang/Basic/DiagnosticGroups.inc" 470#undef GET_DIAG_ARRAYS 471 472// Second the table of options, sorted by name for fast binary lookup. 473static const WarningOption OptionTable[] = { 474#define GET_DIAG_TABLE 475#include "clang/Basic/DiagnosticGroups.inc" 476#undef GET_DIAG_TABLE 477}; 478static const size_t OptionTableSize = 479sizeof(OptionTable) / sizeof(OptionTable[0]); 480 481static bool WarningOptionCompare(const WarningOption &LHS, 482 const WarningOption &RHS) { 483 return strcmp(LHS.Name, RHS.Name) < 0; 484} 485 486static void MapGroupMembers(const WarningOption *Group, diag::Mapping Mapping, 487 Diagnostic &Diags) { 488 // Option exists, poke all the members of its diagnostic set. 489 if (const short *Member = Group->Members) { 490 for (; *Member != -1; ++Member) 491 Diags.setDiagnosticMapping(*Member, Mapping); 492 } 493 494 // Enable/disable all subgroups along with this one. 495 if (const short *SubGroups = Group->SubGroups) { 496 for (; *SubGroups != (short)-1; ++SubGroups) 497 MapGroupMembers(&OptionTable[(short)*SubGroups], Mapping, Diags); 498 } 499} 500 501/// setDiagnosticGroupMapping - Change an entire diagnostic group (e.g. 502/// "unknown-pragmas" to have the specified mapping. This returns true and 503/// ignores the request if "Group" was unknown, false otherwise. 504bool Diagnostic::setDiagnosticGroupMapping(const char *Group, 505 diag::Mapping Map) { 506 507 WarningOption Key = { Group, 0, 0 }; 508 const WarningOption *Found = 509 std::lower_bound(OptionTable, OptionTable + OptionTableSize, Key, 510 WarningOptionCompare); 511 if (Found == OptionTable + OptionTableSize || 512 strcmp(Found->Name, Group) != 0) 513 return true; // Option not found. 514 515 MapGroupMembers(Found, Map, *this); 516 return false; 517} 518 519 520/// ProcessDiag - This is the method used to report a diagnostic that is 521/// finally fully formed. 522bool Diagnostic::ProcessDiag() { 523 DiagnosticInfo Info(this); 524 525 if (SuppressAllDiagnostics) 526 return false; 527 528 // Figure out the diagnostic level of this message. 529 Diagnostic::Level DiagLevel; 530 unsigned DiagID = Info.getID(); 531 532 // ShouldEmitInSystemHeader - True if this diagnostic should be produced even 533 // in a system header. 534 bool ShouldEmitInSystemHeader; 535 536 if (DiagID >= diag::DIAG_UPPER_LIMIT) { 537 // Handle custom diagnostics, which cannot be mapped. 538 DiagLevel = CustomDiagInfo->getLevel(DiagID); 539 540 // Custom diagnostics always are emitted in system headers. 541 ShouldEmitInSystemHeader = true; 542 } else { 543 // Get the class of the diagnostic. If this is a NOTE, map it onto whatever 544 // the diagnostic level was for the previous diagnostic so that it is 545 // filtered the same as the previous diagnostic. 546 unsigned DiagClass = getBuiltinDiagClass(DiagID); 547 if (DiagClass == CLASS_NOTE) { 548 DiagLevel = Diagnostic::Note; 549 ShouldEmitInSystemHeader = false; // extra consideration is needed 550 } else { 551 // If this is not an error and we are in a system header, we ignore it. 552 // Check the original Diag ID here, because we also want to ignore 553 // extensions and warnings in -Werror and -pedantic-errors modes, which 554 // *map* warnings/extensions to errors. 555 ShouldEmitInSystemHeader = DiagClass == CLASS_ERROR; 556 557 DiagLevel = getDiagnosticLevel(DiagID, DiagClass); 558 } 559 } 560 561 if (DiagLevel != Diagnostic::Note) { 562 // Record that a fatal error occurred only when we see a second 563 // non-note diagnostic. This allows notes to be attached to the 564 // fatal error, but suppresses any diagnostics that follow those 565 // notes. 566 if (LastDiagLevel == Diagnostic::Fatal) 567 FatalErrorOccurred = true; 568 569 LastDiagLevel = DiagLevel; 570 } 571 572 // If a fatal error has already been emitted, silence all subsequent 573 // diagnostics. 574 if (FatalErrorOccurred) { 575 if (DiagLevel >= Diagnostic::Error) { 576 ++NumErrors; 577 ++NumErrorsSuppressed; 578 } 579 580 return false; 581 } 582 583 // If the client doesn't care about this message, don't issue it. If this is 584 // a note and the last real diagnostic was ignored, ignore it too. 585 if (DiagLevel == Diagnostic::Ignored || 586 (DiagLevel == Diagnostic::Note && LastDiagLevel == Diagnostic::Ignored)) 587 return false; 588 589 // If this diagnostic is in a system header and is not a clang error, suppress 590 // it. 591 if (SuppressSystemWarnings && !ShouldEmitInSystemHeader && 592 Info.getLocation().isValid() && 593 Info.getLocation().getInstantiationLoc().isInSystemHeader() && 594 (DiagLevel != Diagnostic::Note || LastDiagLevel == Diagnostic::Ignored)) { 595 LastDiagLevel = Diagnostic::Ignored; 596 return false; 597 } 598 599 if (DiagLevel >= Diagnostic::Error) { 600 ErrorOccurred = true; 601 ++NumErrors; 602 603 // If we've emitted a lot of errors, emit a fatal error after it to stop a 604 // flood of bogus errors. 605 if (ErrorLimit && NumErrors >= ErrorLimit && 606 DiagLevel == Diagnostic::Error) 607 SetDelayedDiagnostic(diag::fatal_too_many_errors); 608 } 609 610 // Finally, report it. 611 Client->HandleDiagnostic(DiagLevel, Info); 612 if (Client->IncludeInDiagnosticCounts()) { 613 if (DiagLevel == Diagnostic::Warning) 614 ++NumWarnings; 615 } 616 617 CurDiagID = ~0U; 618 619 return true; 620} 621 622bool DiagnosticBuilder::Emit() { 623 // If DiagObj is null, then its soul was stolen by the copy ctor 624 // or the user called Emit(). 625 if (DiagObj == 0) return false; 626 627 // When emitting diagnostics, we set the final argument count into 628 // the Diagnostic object. 629 DiagObj->NumDiagArgs = NumArgs; 630 DiagObj->NumDiagRanges = NumRanges; 631 DiagObj->NumFixItHints = NumFixItHints; 632 633 // Process the diagnostic, sending the accumulated information to the 634 // DiagnosticClient. 635 bool Emitted = DiagObj->ProcessDiag(); 636 637 // Clear out the current diagnostic object. 638 unsigned DiagID = DiagObj->CurDiagID; 639 DiagObj->Clear(); 640 641 // If there was a delayed diagnostic, emit it now. 642 if (DiagObj->DelayedDiagID && DiagObj->DelayedDiagID != DiagID) 643 DiagObj->ReportDelayed(); 644 645 // This diagnostic is dead. 646 DiagObj = 0; 647 648 return Emitted; 649} 650 651 652DiagnosticClient::~DiagnosticClient() {} 653 654 655/// ModifierIs - Return true if the specified modifier matches specified string. 656template <std::size_t StrLen> 657static bool ModifierIs(const char *Modifier, unsigned ModifierLen, 658 const char (&Str)[StrLen]) { 659 return StrLen-1 == ModifierLen && !memcmp(Modifier, Str, StrLen-1); 660} 661 662/// ScanForward - Scans forward, looking for the given character, skipping 663/// nested clauses and escaped characters. 664static const char *ScanFormat(const char *I, const char *E, char Target) { 665 unsigned Depth = 0; 666 667 for ( ; I != E; ++I) { 668 if (Depth == 0 && *I == Target) return I; 669 if (Depth != 0 && *I == '}') Depth--; 670 671 if (*I == '%') { 672 I++; 673 if (I == E) break; 674 675 // Escaped characters get implicitly skipped here. 676 677 // Format specifier. 678 if (!isdigit(*I) && !ispunct(*I)) { 679 for (I++; I != E && !isdigit(*I) && *I != '{'; I++) ; 680 if (I == E) break; 681 if (*I == '{') 682 Depth++; 683 } 684 } 685 } 686 return E; 687} 688 689/// HandleSelectModifier - Handle the integer 'select' modifier. This is used 690/// like this: %select{foo|bar|baz}2. This means that the integer argument 691/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'. 692/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'. 693/// This is very useful for certain classes of variant diagnostics. 694static void HandleSelectModifier(const DiagnosticInfo &DInfo, unsigned ValNo, 695 const char *Argument, unsigned ArgumentLen, 696 llvm::SmallVectorImpl<char> &OutStr) { 697 const char *ArgumentEnd = Argument+ArgumentLen; 698 699 // Skip over 'ValNo' |'s. 700 while (ValNo) { 701 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|'); 702 assert(NextVal != ArgumentEnd && "Value for integer select modifier was" 703 " larger than the number of options in the diagnostic string!"); 704 Argument = NextVal+1; // Skip this string. 705 --ValNo; 706 } 707 708 // Get the end of the value. This is either the } or the |. 709 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|'); 710 711 // Recursively format the result of the select clause into the output string. 712 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr); 713} 714 715/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the 716/// letter 's' to the string if the value is not 1. This is used in cases like 717/// this: "you idiot, you have %4 parameter%s4!". 718static void HandleIntegerSModifier(unsigned ValNo, 719 llvm::SmallVectorImpl<char> &OutStr) { 720 if (ValNo != 1) 721 OutStr.push_back('s'); 722} 723 724/// HandleOrdinalModifier - Handle the integer 'ord' modifier. This 725/// prints the ordinal form of the given integer, with 1 corresponding 726/// to the first ordinal. Currently this is hard-coded to use the 727/// English form. 728static void HandleOrdinalModifier(unsigned ValNo, 729 llvm::SmallVectorImpl<char> &OutStr) { 730 assert(ValNo != 0 && "ValNo must be strictly positive!"); 731 732 llvm::raw_svector_ostream Out(OutStr); 733 734 // We could use text forms for the first N ordinals, but the numeric 735 // forms are actually nicer in diagnostics because they stand out. 736 Out << ValNo; 737 738 // It is critically important that we do this perfectly for 739 // user-written sequences with over 100 elements. 740 switch (ValNo % 100) { 741 case 11: 742 case 12: 743 case 13: 744 Out << "th"; return; 745 default: 746 switch (ValNo % 10) { 747 case 1: Out << "st"; return; 748 case 2: Out << "nd"; return; 749 case 3: Out << "rd"; return; 750 default: Out << "th"; return; 751 } 752 } 753} 754 755 756/// PluralNumber - Parse an unsigned integer and advance Start. 757static unsigned PluralNumber(const char *&Start, const char *End) { 758 // Programming 101: Parse a decimal number :-) 759 unsigned Val = 0; 760 while (Start != End && *Start >= '0' && *Start <= '9') { 761 Val *= 10; 762 Val += *Start - '0'; 763 ++Start; 764 } 765 return Val; 766} 767 768/// TestPluralRange - Test if Val is in the parsed range. Modifies Start. 769static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) { 770 if (*Start != '[') { 771 unsigned Ref = PluralNumber(Start, End); 772 return Ref == Val; 773 } 774 775 ++Start; 776 unsigned Low = PluralNumber(Start, End); 777 assert(*Start == ',' && "Bad plural expression syntax: expected ,"); 778 ++Start; 779 unsigned High = PluralNumber(Start, End); 780 assert(*Start == ']' && "Bad plural expression syntax: expected )"); 781 ++Start; 782 return Low <= Val && Val <= High; 783} 784 785/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier. 786static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) { 787 // Empty condition? 788 if (*Start == ':') 789 return true; 790 791 while (1) { 792 char C = *Start; 793 if (C == '%') { 794 // Modulo expression 795 ++Start; 796 unsigned Arg = PluralNumber(Start, End); 797 assert(*Start == '=' && "Bad plural expression syntax: expected ="); 798 ++Start; 799 unsigned ValMod = ValNo % Arg; 800 if (TestPluralRange(ValMod, Start, End)) 801 return true; 802 } else { 803 assert((C == '[' || (C >= '0' && C <= '9')) && 804 "Bad plural expression syntax: unexpected character"); 805 // Range expression 806 if (TestPluralRange(ValNo, Start, End)) 807 return true; 808 } 809 810 // Scan for next or-expr part. 811 Start = std::find(Start, End, ','); 812 if (Start == End) 813 break; 814 ++Start; 815 } 816 return false; 817} 818 819/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used 820/// for complex plural forms, or in languages where all plurals are complex. 821/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are 822/// conditions that are tested in order, the form corresponding to the first 823/// that applies being emitted. The empty condition is always true, making the 824/// last form a default case. 825/// Conditions are simple boolean expressions, where n is the number argument. 826/// Here are the rules. 827/// condition := expression | empty 828/// empty := -> always true 829/// expression := numeric [',' expression] -> logical or 830/// numeric := range -> true if n in range 831/// | '%' number '=' range -> true if n % number in range 832/// range := number 833/// | '[' number ',' number ']' -> ranges are inclusive both ends 834/// 835/// Here are some examples from the GNU gettext manual written in this form: 836/// English: 837/// {1:form0|:form1} 838/// Latvian: 839/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0} 840/// Gaeilge: 841/// {1:form0|2:form1|:form2} 842/// Romanian: 843/// {1:form0|0,%100=[1,19]:form1|:form2} 844/// Lithuanian: 845/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1} 846/// Russian (requires repeated form): 847/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2} 848/// Slovak 849/// {1:form0|[2,4]:form1|:form2} 850/// Polish (requires repeated form): 851/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2} 852static void HandlePluralModifier(unsigned ValNo, 853 const char *Argument, unsigned ArgumentLen, 854 llvm::SmallVectorImpl<char> &OutStr) { 855 const char *ArgumentEnd = Argument + ArgumentLen; 856 while (1) { 857 assert(Argument < ArgumentEnd && "Plural expression didn't match."); 858 const char *ExprEnd = Argument; 859 while (*ExprEnd != ':') { 860 assert(ExprEnd != ArgumentEnd && "Plural missing expression end"); 861 ++ExprEnd; 862 } 863 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) { 864 Argument = ExprEnd + 1; 865 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|'); 866 OutStr.append(Argument, ExprEnd); 867 return; 868 } 869 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1; 870 } 871} 872 873 874/// FormatDiagnostic - Format this diagnostic into a string, substituting the 875/// formal arguments into the %0 slots. The result is appended onto the Str 876/// array. 877void DiagnosticInfo:: 878FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const { 879 const char *DiagStr = getDiags()->getDescription(getID()); 880 const char *DiagEnd = DiagStr+strlen(DiagStr); 881 882 FormatDiagnostic(DiagStr, DiagEnd, OutStr); 883} 884 885void DiagnosticInfo:: 886FormatDiagnostic(const char *DiagStr, const char *DiagEnd, 887 llvm::SmallVectorImpl<char> &OutStr) const { 888 889 /// FormattedArgs - Keep track of all of the arguments formatted by 890 /// ConvertArgToString and pass them into subsequent calls to 891 /// ConvertArgToString, allowing the implementation to avoid redundancies in 892 /// obvious cases. 893 llvm::SmallVector<Diagnostic::ArgumentValue, 8> FormattedArgs; 894 895 while (DiagStr != DiagEnd) { 896 if (DiagStr[0] != '%') { 897 // Append non-%0 substrings to Str if we have one. 898 const char *StrEnd = std::find(DiagStr, DiagEnd, '%'); 899 OutStr.append(DiagStr, StrEnd); 900 DiagStr = StrEnd; 901 continue; 902 } else if (ispunct(DiagStr[1])) { 903 OutStr.push_back(DiagStr[1]); // %% -> %. 904 DiagStr += 2; 905 continue; 906 } 907 908 // Skip the %. 909 ++DiagStr; 910 911 // This must be a placeholder for a diagnostic argument. The format for a 912 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0". 913 // The digit is a number from 0-9 indicating which argument this comes from. 914 // The modifier is a string of digits from the set [-a-z]+, arguments is a 915 // brace enclosed string. 916 const char *Modifier = 0, *Argument = 0; 917 unsigned ModifierLen = 0, ArgumentLen = 0; 918 919 // Check to see if we have a modifier. If so eat it. 920 if (!isdigit(DiagStr[0])) { 921 Modifier = DiagStr; 922 while (DiagStr[0] == '-' || 923 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z')) 924 ++DiagStr; 925 ModifierLen = DiagStr-Modifier; 926 927 // If we have an argument, get it next. 928 if (DiagStr[0] == '{') { 929 ++DiagStr; // Skip {. 930 Argument = DiagStr; 931 932 DiagStr = ScanFormat(DiagStr, DiagEnd, '}'); 933 assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!"); 934 ArgumentLen = DiagStr-Argument; 935 ++DiagStr; // Skip }. 936 } 937 } 938 939 assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic"); 940 unsigned ArgNo = *DiagStr++ - '0'; 941 942 Diagnostic::ArgumentKind Kind = getArgKind(ArgNo); 943 944 switch (Kind) { 945 // ---- STRINGS ---- 946 case Diagnostic::ak_std_string: { 947 const std::string &S = getArgStdStr(ArgNo); 948 assert(ModifierLen == 0 && "No modifiers for strings yet"); 949 OutStr.append(S.begin(), S.end()); 950 break; 951 } 952 case Diagnostic::ak_c_string: { 953 const char *S = getArgCStr(ArgNo); 954 assert(ModifierLen == 0 && "No modifiers for strings yet"); 955 956 // Don't crash if get passed a null pointer by accident. 957 if (!S) 958 S = "(null)"; 959 960 OutStr.append(S, S + strlen(S)); 961 break; 962 } 963 // ---- INTEGERS ---- 964 case Diagnostic::ak_sint: { 965 int Val = getArgSInt(ArgNo); 966 967 if (ModifierIs(Modifier, ModifierLen, "select")) { 968 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen, OutStr); 969 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 970 HandleIntegerSModifier(Val, OutStr); 971 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 972 HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr); 973 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 974 HandleOrdinalModifier((unsigned)Val, OutStr); 975 } else { 976 assert(ModifierLen == 0 && "Unknown integer modifier"); 977 llvm::raw_svector_ostream(OutStr) << Val; 978 } 979 break; 980 } 981 case Diagnostic::ak_uint: { 982 unsigned Val = getArgUInt(ArgNo); 983 984 if (ModifierIs(Modifier, ModifierLen, "select")) { 985 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr); 986 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 987 HandleIntegerSModifier(Val, OutStr); 988 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 989 HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr); 990 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 991 HandleOrdinalModifier(Val, OutStr); 992 } else { 993 assert(ModifierLen == 0 && "Unknown integer modifier"); 994 llvm::raw_svector_ostream(OutStr) << Val; 995 } 996 break; 997 } 998 // ---- NAMES and TYPES ---- 999 case Diagnostic::ak_identifierinfo: { 1000 const IdentifierInfo *II = getArgIdentifier(ArgNo); 1001 assert(ModifierLen == 0 && "No modifiers for strings yet"); 1002 1003 // Don't crash if get passed a null pointer by accident. 1004 if (!II) { 1005 const char *S = "(null)"; 1006 OutStr.append(S, S + strlen(S)); 1007 continue; 1008 } 1009 1010 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\''; 1011 break; 1012 } 1013 case Diagnostic::ak_qualtype: 1014 case Diagnostic::ak_declarationname: 1015 case Diagnostic::ak_nameddecl: 1016 case Diagnostic::ak_nestednamespec: 1017 case Diagnostic::ak_declcontext: 1018 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo), 1019 Modifier, ModifierLen, 1020 Argument, ArgumentLen, 1021 FormattedArgs.data(), FormattedArgs.size(), 1022 OutStr); 1023 break; 1024 } 1025 1026 // Remember this argument info for subsequent formatting operations. Turn 1027 // std::strings into a null terminated string to make it be the same case as 1028 // all the other ones. 1029 if (Kind != Diagnostic::ak_std_string) 1030 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo))); 1031 else 1032 FormattedArgs.push_back(std::make_pair(Diagnostic::ak_c_string, 1033 (intptr_t)getArgStdStr(ArgNo).c_str())); 1034 1035 } 1036} 1037 1038StoredDiagnostic::StoredDiagnostic() { } 1039 1040StoredDiagnostic::StoredDiagnostic(Diagnostic::Level Level, 1041 llvm::StringRef Message) 1042 : Level(Level), Loc(), Message(Message) { } 1043 1044StoredDiagnostic::StoredDiagnostic(Diagnostic::Level Level, 1045 const DiagnosticInfo &Info) 1046 : Level(Level), Loc(Info.getLocation()) { 1047 llvm::SmallString<64> Message; 1048 Info.FormatDiagnostic(Message); 1049 this->Message.assign(Message.begin(), Message.end()); 1050 1051 Ranges.reserve(Info.getNumRanges()); 1052 for (unsigned I = 0, N = Info.getNumRanges(); I != N; ++I) 1053 Ranges.push_back(Info.getRange(I)); 1054 1055 FixIts.reserve(Info.getNumFixItHints()); 1056 for (unsigned I = 0, N = Info.getNumFixItHints(); I != N; ++I) 1057 FixIts.push_back(Info.getFixItHint(I)); 1058} 1059 1060StoredDiagnostic::~StoredDiagnostic() { } 1061 1062static void WriteUnsigned(llvm::raw_ostream &OS, unsigned Value) { 1063 OS.write((const char *)&Value, sizeof(unsigned)); 1064} 1065 1066static void WriteString(llvm::raw_ostream &OS, llvm::StringRef String) { 1067 WriteUnsigned(OS, String.size()); 1068 OS.write(String.data(), String.size()); 1069} 1070 1071static void WriteSourceLocation(llvm::raw_ostream &OS, 1072 SourceManager *SM, 1073 SourceLocation Location) { 1074 if (!SM || Location.isInvalid()) { 1075 // If we don't have a source manager or this location is invalid, 1076 // just write an invalid location. 1077 WriteUnsigned(OS, 0); 1078 WriteUnsigned(OS, 0); 1079 WriteUnsigned(OS, 0); 1080 return; 1081 } 1082 1083 Location = SM->getInstantiationLoc(Location); 1084 std::pair<FileID, unsigned> Decomposed = SM->getDecomposedLoc(Location); 1085 1086 const FileEntry *FE = SM->getFileEntryForID(Decomposed.first); 1087 if (FE) 1088 WriteString(OS, FE->getName()); 1089 else { 1090 // Fallback to using the buffer name when there is no entry. 1091 WriteString(OS, SM->getBuffer(Decomposed.first)->getBufferIdentifier()); 1092 } 1093 1094 WriteUnsigned(OS, SM->getLineNumber(Decomposed.first, Decomposed.second)); 1095 WriteUnsigned(OS, SM->getColumnNumber(Decomposed.first, Decomposed.second)); 1096} 1097 1098void StoredDiagnostic::Serialize(llvm::raw_ostream &OS) const { 1099 SourceManager *SM = 0; 1100 if (getLocation().isValid()) 1101 SM = &const_cast<SourceManager &>(getLocation().getManager()); 1102 1103 // Write a short header to help identify diagnostics. 1104 OS << (char)0x06 << (char)0x07; 1105 1106 // Write the diagnostic level and location. 1107 WriteUnsigned(OS, (unsigned)Level); 1108 WriteSourceLocation(OS, SM, getLocation()); 1109 1110 // Write the diagnostic message. 1111 llvm::SmallString<64> Message; 1112 WriteString(OS, getMessage()); 1113 1114 // Count the number of ranges that don't point into macros, since 1115 // only simple file ranges serialize well. 1116 unsigned NumNonMacroRanges = 0; 1117 for (range_iterator R = range_begin(), REnd = range_end(); R != REnd; ++R) { 1118 if (R->getBegin().isMacroID() || R->getEnd().isMacroID()) 1119 continue; 1120 1121 ++NumNonMacroRanges; 1122 } 1123 1124 // Write the ranges. 1125 WriteUnsigned(OS, NumNonMacroRanges); 1126 if (NumNonMacroRanges) { 1127 for (range_iterator R = range_begin(), REnd = range_end(); R != REnd; ++R) { 1128 if (R->getBegin().isMacroID() || R->getEnd().isMacroID()) 1129 continue; 1130 1131 WriteSourceLocation(OS, SM, R->getBegin()); 1132 WriteSourceLocation(OS, SM, R->getEnd()); 1133 WriteUnsigned(OS, R->isTokenRange()); 1134 } 1135 } 1136 1137 // Determine if all of the fix-its involve rewrites with simple file 1138 // locations (not in macro instantiations). If so, we can write 1139 // fix-it information. 1140 unsigned NumFixIts = 0; 1141 for (fixit_iterator F = fixit_begin(), FEnd = fixit_end(); F != FEnd; ++F) { 1142 if (F->RemoveRange.isValid() && 1143 (F->RemoveRange.getBegin().isMacroID() || 1144 F->RemoveRange.getEnd().isMacroID())) { 1145 NumFixIts = 0; 1146 break; 1147 } 1148 1149 if (F->InsertionLoc.isValid() && F->InsertionLoc.isMacroID()) { 1150 NumFixIts = 0; 1151 break; 1152 } 1153 1154 ++NumFixIts; 1155 } 1156 1157 // Write the fix-its. 1158 WriteUnsigned(OS, NumFixIts); 1159 for (fixit_iterator F = fixit_begin(), FEnd = fixit_end(); F != FEnd; ++F) { 1160 WriteSourceLocation(OS, SM, F->RemoveRange.getBegin()); 1161 WriteSourceLocation(OS, SM, F->RemoveRange.getEnd()); 1162 WriteUnsigned(OS, F->RemoveRange.isTokenRange()); 1163 WriteSourceLocation(OS, SM, F->InsertionLoc); 1164 WriteString(OS, F->CodeToInsert); 1165 } 1166} 1167 1168static bool ReadUnsigned(const char *&Memory, const char *MemoryEnd, 1169 unsigned &Value) { 1170 if (Memory + sizeof(unsigned) > MemoryEnd) 1171 return true; 1172 1173 memmove(&Value, Memory, sizeof(unsigned)); 1174 Memory += sizeof(unsigned); 1175 return false; 1176} 1177 1178static bool ReadSourceLocation(FileManager &FM, SourceManager &SM, 1179 const char *&Memory, const char *MemoryEnd, 1180 SourceLocation &Location) { 1181 // Read the filename. 1182 unsigned FileNameLen = 0; 1183 if (ReadUnsigned(Memory, MemoryEnd, FileNameLen) || 1184 Memory + FileNameLen > MemoryEnd) 1185 return true; 1186 1187 llvm::StringRef FileName(Memory, FileNameLen); 1188 Memory += FileNameLen; 1189 1190 // Read the line, column. 1191 unsigned Line = 0, Column = 0; 1192 if (ReadUnsigned(Memory, MemoryEnd, Line) || 1193 ReadUnsigned(Memory, MemoryEnd, Column)) 1194 return true; 1195 1196 if (FileName.empty()) { 1197 Location = SourceLocation(); 1198 return false; 1199 } 1200 1201 const FileEntry *File = FM.getFile(FileName); 1202 if (!File) 1203 return true; 1204 1205 // Make sure that this file has an entry in the source manager. 1206 if (!SM.hasFileInfo(File)) 1207 SM.createFileID(File, SourceLocation(), SrcMgr::C_User); 1208 1209 Location = SM.getLocation(File, Line, Column); 1210 return false; 1211} 1212 1213StoredDiagnostic 1214StoredDiagnostic::Deserialize(FileManager &FM, SourceManager &SM, 1215 const char *&Memory, const char *MemoryEnd) { 1216 while (true) { 1217 if (Memory == MemoryEnd) 1218 return StoredDiagnostic(); 1219 1220 if (*Memory != 0x06) { 1221 ++Memory; 1222 continue; 1223 } 1224 1225 ++Memory; 1226 if (Memory == MemoryEnd) 1227 return StoredDiagnostic(); 1228 1229 if (*Memory != 0x07) { 1230 ++Memory; 1231 continue; 1232 } 1233 1234 // We found the header. We're done. 1235 ++Memory; 1236 break; 1237 } 1238 1239 // Read the severity level. 1240 unsigned Level = 0; 1241 if (ReadUnsigned(Memory, MemoryEnd, Level) || Level > Diagnostic::Fatal) 1242 return StoredDiagnostic(); 1243 1244 // Read the source location. 1245 SourceLocation Location; 1246 if (ReadSourceLocation(FM, SM, Memory, MemoryEnd, Location)) 1247 return StoredDiagnostic(); 1248 1249 // Read the diagnostic text. 1250 if (Memory == MemoryEnd) 1251 return StoredDiagnostic(); 1252 1253 unsigned MessageLen = 0; 1254 if (ReadUnsigned(Memory, MemoryEnd, MessageLen) || 1255 Memory + MessageLen > MemoryEnd) 1256 return StoredDiagnostic(); 1257 1258 llvm::StringRef Message(Memory, MessageLen); 1259 Memory += MessageLen; 1260 1261 1262 // At this point, we have enough information to form a diagnostic. Do so. 1263 StoredDiagnostic Diag; 1264 Diag.Level = (Diagnostic::Level)Level; 1265 Diag.Loc = FullSourceLoc(Location, SM); 1266 Diag.Message = Message; 1267 if (Memory == MemoryEnd) 1268 return Diag; 1269 1270 // Read the source ranges. 1271 unsigned NumSourceRanges = 0; 1272 if (ReadUnsigned(Memory, MemoryEnd, NumSourceRanges)) 1273 return Diag; 1274 for (unsigned I = 0; I != NumSourceRanges; ++I) { 1275 SourceLocation Begin, End; 1276 unsigned IsTokenRange; 1277 if (ReadSourceLocation(FM, SM, Memory, MemoryEnd, Begin) || 1278 ReadSourceLocation(FM, SM, Memory, MemoryEnd, End) || 1279 ReadUnsigned(Memory, MemoryEnd, IsTokenRange)) 1280 return Diag; 1281 1282 Diag.Ranges.push_back(CharSourceRange(SourceRange(Begin, End), 1283 IsTokenRange)); 1284 } 1285 1286 // Read the fix-it hints. 1287 unsigned NumFixIts = 0; 1288 if (ReadUnsigned(Memory, MemoryEnd, NumFixIts)) 1289 return Diag; 1290 for (unsigned I = 0; I != NumFixIts; ++I) { 1291 SourceLocation RemoveBegin, RemoveEnd, InsertionLoc; 1292 unsigned InsertLen = 0, RemoveIsTokenRange; 1293 if (ReadSourceLocation(FM, SM, Memory, MemoryEnd, RemoveBegin) || 1294 ReadSourceLocation(FM, SM, Memory, MemoryEnd, RemoveEnd) || 1295 ReadUnsigned(Memory, MemoryEnd, RemoveIsTokenRange) || 1296 ReadSourceLocation(FM, SM, Memory, MemoryEnd, InsertionLoc) || 1297 ReadUnsigned(Memory, MemoryEnd, InsertLen) || 1298 Memory + InsertLen > MemoryEnd) { 1299 Diag.FixIts.clear(); 1300 return Diag; 1301 } 1302 1303 FixItHint Hint; 1304 Hint.RemoveRange = CharSourceRange(SourceRange(RemoveBegin, RemoveEnd), 1305 RemoveIsTokenRange); 1306 Hint.InsertionLoc = InsertionLoc; 1307 Hint.CodeToInsert.assign(Memory, Memory + InsertLen); 1308 Memory += InsertLen; 1309 Diag.FixIts.push_back(Hint); 1310 } 1311 1312 return Diag; 1313} 1314 1315/// IncludeInDiagnosticCounts - This method (whose default implementation 1316/// returns true) indicates whether the diagnostics handled by this 1317/// DiagnosticClient should be included in the number of diagnostics 1318/// reported by Diagnostic. 1319bool DiagnosticClient::IncludeInDiagnosticCounts() const { return true; } 1320 1321PartialDiagnostic::StorageAllocator::StorageAllocator() { 1322 for (unsigned I = 0; I != NumCached; ++I) 1323 FreeList[I] = Cached + I; 1324 NumFreeListEntries = NumCached; 1325} 1326 1327PartialDiagnostic::StorageAllocator::~StorageAllocator() { 1328 assert(NumFreeListEntries == NumCached && "A partial is on the lamb"); 1329} 1330