Diagnostic.cpp revision 3c46e8db99196179b30e7ac5c20c4efd5f3926d7
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 41namespace { 42 43// Diagnostic classes. 44enum { 45 CLASS_NOTE = 0x01, 46 CLASS_WARNING = 0x02, 47 CLASS_EXTENSION = 0x03, 48 CLASS_ERROR = 0x04 49}; 50 51struct StaticDiagInfoRec { 52 unsigned short DiagID; 53 unsigned Mapping : 3; 54 unsigned Class : 3; 55 bool SFINAE : 1; 56 unsigned Category : 5; 57 58 const char *Description; 59 const char *OptionGroup; 60 61 bool operator<(const StaticDiagInfoRec &RHS) const { 62 return DiagID < RHS.DiagID; 63 } 64 bool operator>(const StaticDiagInfoRec &RHS) const { 65 return DiagID > RHS.DiagID; 66 } 67}; 68 69} 70 71static const StaticDiagInfoRec StaticDiagInfo[] = { 72#define DIAG(ENUM,CLASS,DEFAULT_MAPPING,DESC,GROUP,SFINAE, CATEGORY) \ 73 { diag::ENUM, DEFAULT_MAPPING, CLASS, SFINAE, CATEGORY, DESC, GROUP }, 74#include "clang/Basic/DiagnosticCommonKinds.inc" 75#include "clang/Basic/DiagnosticDriverKinds.inc" 76#include "clang/Basic/DiagnosticFrontendKinds.inc" 77#include "clang/Basic/DiagnosticLexKinds.inc" 78#include "clang/Basic/DiagnosticParseKinds.inc" 79#include "clang/Basic/DiagnosticASTKinds.inc" 80#include "clang/Basic/DiagnosticSemaKinds.inc" 81#include "clang/Basic/DiagnosticAnalysisKinds.inc" 82 { 0, 0, 0, 0, 0, 0, 0} 83}; 84#undef DIAG 85 86/// GetDiagInfo - Return the StaticDiagInfoRec entry for the specified DiagID, 87/// or null if the ID is invalid. 88static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) { 89 unsigned NumDiagEntries = sizeof(StaticDiagInfo)/sizeof(StaticDiagInfo[0])-1; 90 91 // If assertions are enabled, verify that the StaticDiagInfo array is sorted. 92#ifndef NDEBUG 93 static bool IsFirst = true; 94 if (IsFirst) { 95 for (unsigned i = 1; i != NumDiagEntries; ++i) { 96 assert(StaticDiagInfo[i-1].DiagID != StaticDiagInfo[i].DiagID && 97 "Diag ID conflict, the enums at the start of clang::diag (in " 98 "Diagnostic.h) probably need to be increased"); 99 100 assert(StaticDiagInfo[i-1] < StaticDiagInfo[i] && 101 "Improperly sorted diag info"); 102 } 103 IsFirst = false; 104 } 105#endif 106 107 // Search the diagnostic table with a binary search. 108 StaticDiagInfoRec Find = { DiagID, 0, 0, 0, 0, 0, 0 }; 109 110 const StaticDiagInfoRec *Found = 111 std::lower_bound(StaticDiagInfo, StaticDiagInfo + NumDiagEntries, Find); 112 if (Found == StaticDiagInfo + NumDiagEntries || 113 Found->DiagID != DiagID) 114 return 0; 115 116 return Found; 117} 118 119static unsigned GetDefaultDiagMapping(unsigned DiagID) { 120 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 121 return Info->Mapping; 122 return diag::MAP_FATAL; 123} 124 125/// getWarningOptionForDiag - Return the lowest-level warning option that 126/// enables the specified diagnostic. If there is no -Wfoo flag that controls 127/// the diagnostic, this returns null. 128const char *Diagnostic::getWarningOptionForDiag(unsigned DiagID) { 129 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 130 return Info->OptionGroup; 131 return 0; 132} 133 134/// getWarningOptionForDiag - Return the category number that a specified 135/// DiagID belongs to, or 0 if no category. 136unsigned Diagnostic::getCategoryNumberForDiag(unsigned DiagID) { 137 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 138 return Info->Category; 139 return 0; 140} 141 142/// getCategoryNameFromID - Given a category ID, return the name of the 143/// category, an empty string if CategoryID is zero, or null if CategoryID is 144/// invalid. 145const char *Diagnostic::getCategoryNameFromID(unsigned CategoryID) { 146 // Second the table of options, sorted by name for fast binary lookup. 147 static const char *CategoryNameTable[] = { 148#define GET_CATEGORY_TABLE 149#define CATEGORY(X) X, 150#include "clang/Basic/DiagnosticGroups.inc" 151#undef GET_CATEGORY_TABLE 152 "<<END>>" 153 }; 154 static const size_t CategoryNameTableSize = 155 sizeof(CategoryNameTable) / sizeof(CategoryNameTable[0])-1; 156 157 if (CategoryID >= CategoryNameTableSize) return 0; 158 return CategoryNameTable[CategoryID]; 159} 160 161 162 163Diagnostic::SFINAEResponse 164Diagnostic::getDiagnosticSFINAEResponse(unsigned DiagID) { 165 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) { 166 if (!Info->SFINAE) 167 return SFINAE_Report; 168 169 if (Info->Class == CLASS_ERROR) 170 return SFINAE_SubstitutionFailure; 171 172 // Suppress notes, warnings, and extensions; 173 return SFINAE_Suppress; 174 } 175 176 return SFINAE_Report; 177} 178 179/// getDiagClass - Return the class field of the diagnostic. 180/// 181static unsigned getBuiltinDiagClass(unsigned DiagID) { 182 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 183 return Info->Class; 184 return ~0U; 185} 186 187//===----------------------------------------------------------------------===// 188// Custom Diagnostic information 189//===----------------------------------------------------------------------===// 190 191namespace clang { 192 namespace diag { 193 class CustomDiagInfo { 194 typedef std::pair<Diagnostic::Level, std::string> DiagDesc; 195 std::vector<DiagDesc> DiagInfo; 196 std::map<DiagDesc, unsigned> DiagIDs; 197 public: 198 199 /// getDescription - Return the description of the specified custom 200 /// diagnostic. 201 const char *getDescription(unsigned DiagID) const { 202 assert(this && DiagID-DIAG_UPPER_LIMIT < DiagInfo.size() && 203 "Invalid diagnosic ID"); 204 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].second.c_str(); 205 } 206 207 /// getLevel - Return the level of the specified custom diagnostic. 208 Diagnostic::Level getLevel(unsigned DiagID) const { 209 assert(this && DiagID-DIAG_UPPER_LIMIT < DiagInfo.size() && 210 "Invalid diagnosic ID"); 211 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].first; 212 } 213 214 unsigned getOrCreateDiagID(Diagnostic::Level L, llvm::StringRef Message, 215 Diagnostic &Diags) { 216 DiagDesc D(L, Message); 217 // Check to see if it already exists. 218 std::map<DiagDesc, unsigned>::iterator I = DiagIDs.lower_bound(D); 219 if (I != DiagIDs.end() && I->first == D) 220 return I->second; 221 222 // If not, assign a new ID. 223 unsigned ID = DiagInfo.size()+DIAG_UPPER_LIMIT; 224 DiagIDs.insert(std::make_pair(D, ID)); 225 DiagInfo.push_back(D); 226 return ID; 227 } 228 }; 229 230 } // end diag namespace 231} // end clang namespace 232 233 234//===----------------------------------------------------------------------===// 235// Common Diagnostic implementation 236//===----------------------------------------------------------------------===// 237 238static void DummyArgToStringFn(Diagnostic::ArgumentKind AK, intptr_t QT, 239 const char *Modifier, unsigned ML, 240 const char *Argument, unsigned ArgLen, 241 const Diagnostic::ArgumentValue *PrevArgs, 242 unsigned NumPrevArgs, 243 llvm::SmallVectorImpl<char> &Output, 244 void *Cookie) { 245 const char *Str = "<can't format argument>"; 246 Output.append(Str, Str+strlen(Str)); 247} 248 249 250Diagnostic::Diagnostic(DiagnosticClient *client) : Client(client) { 251 ArgToStringFn = DummyArgToStringFn; 252 ArgToStringCookie = 0; 253 254 Reset(); 255} 256 257Diagnostic::~Diagnostic() { 258 delete CustomDiagInfo; 259} 260 261 262void Diagnostic::pushMappings() { 263 // Avoids undefined behavior when the stack has to resize. 264 DiagMappingsStack.reserve(DiagMappingsStack.size() + 1); 265 DiagMappingsStack.push_back(DiagMappingsStack.back()); 266} 267 268bool Diagnostic::popMappings() { 269 if (DiagMappingsStack.size() == 1) 270 return false; 271 272 DiagMappingsStack.pop_back(); 273 return true; 274} 275 276/// getCustomDiagID - Return an ID for a diagnostic with the specified message 277/// and level. If this is the first request for this diagnosic, it is 278/// registered and created, otherwise the existing ID is returned. 279unsigned Diagnostic::getCustomDiagID(Level L, llvm::StringRef Message) { 280 if (CustomDiagInfo == 0) 281 CustomDiagInfo = new diag::CustomDiagInfo(); 282 return CustomDiagInfo->getOrCreateDiagID(L, Message, *this); 283} 284 285 286/// isBuiltinWarningOrExtension - Return true if the unmapped diagnostic 287/// level of the specified diagnostic ID is a Warning or Extension. 288/// This only works on builtin diagnostics, not custom ones, and is not legal to 289/// call on NOTEs. 290bool Diagnostic::isBuiltinWarningOrExtension(unsigned DiagID) { 291 return DiagID < diag::DIAG_UPPER_LIMIT && 292 getBuiltinDiagClass(DiagID) != CLASS_ERROR; 293} 294 295/// \brief Determine whether the given built-in diagnostic ID is a 296/// Note. 297bool Diagnostic::isBuiltinNote(unsigned DiagID) { 298 return DiagID < diag::DIAG_UPPER_LIMIT && 299 getBuiltinDiagClass(DiagID) == CLASS_NOTE; 300} 301 302/// isBuiltinExtensionDiag - Determine whether the given built-in diagnostic 303/// ID is for an extension of some sort. This also returns EnabledByDefault, 304/// which is set to indicate whether the diagnostic is ignored by default (in 305/// which case -pedantic enables it) or treated as a warning/error by default. 306/// 307bool Diagnostic::isBuiltinExtensionDiag(unsigned DiagID, 308 bool &EnabledByDefault) { 309 if (DiagID >= diag::DIAG_UPPER_LIMIT || 310 getBuiltinDiagClass(DiagID) != CLASS_EXTENSION) 311 return false; 312 313 EnabledByDefault = StaticDiagInfo[DiagID].Mapping != diag::MAP_IGNORE; 314 return true; 315} 316 317void Diagnostic::Reset() { 318 AllExtensionsSilenced = 0; 319 IgnoreAllWarnings = false; 320 WarningsAsErrors = false; 321 ErrorsAsFatal = false; 322 SuppressSystemWarnings = false; 323 SuppressAllDiagnostics = false; 324 ShowOverloads = Ovl_All; 325 ExtBehavior = Ext_Ignore; 326 327 ErrorOccurred = false; 328 FatalErrorOccurred = false; 329 ErrorLimit = 0; 330 TemplateBacktraceLimit = 0; 331 332 NumWarnings = 0; 333 NumErrors = 0; 334 NumErrorsSuppressed = 0; 335 CustomDiagInfo = 0; 336 CurDiagID = ~0U; 337 LastDiagLevel = Ignored; 338 DelayedDiagID = 0; 339 340 // Set all mappings to 'unset'. 341 DiagMappingsStack.clear(); 342 DiagMappingsStack.push_back(DiagMappings()); 343} 344 345/// getDescription - Given a diagnostic ID, return a description of the 346/// issue. 347const char *Diagnostic::getDescription(unsigned DiagID) const { 348 if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID)) 349 return Info->Description; 350 return CustomDiagInfo->getDescription(DiagID); 351} 352 353void Diagnostic::SetDelayedDiagnostic(unsigned DiagID, llvm::StringRef Arg1, 354 llvm::StringRef Arg2) { 355 if (DelayedDiagID) 356 return; 357 358 DelayedDiagID = DiagID; 359 DelayedDiagArg1 = Arg1.str(); 360 DelayedDiagArg2 = Arg2.str(); 361} 362 363void Diagnostic::ReportDelayed() { 364 Report(DelayedDiagID) << DelayedDiagArg1 << DelayedDiagArg2; 365 DelayedDiagID = 0; 366 DelayedDiagArg1.clear(); 367 DelayedDiagArg2.clear(); 368} 369 370/// getDiagnosticLevel - Based on the way the client configured the Diagnostic 371/// object, classify the specified diagnostic ID into a Level, consumable by 372/// the DiagnosticClient. 373Diagnostic::Level Diagnostic::getDiagnosticLevel(unsigned DiagID) const { 374 // Handle custom diagnostics, which cannot be mapped. 375 if (DiagID >= diag::DIAG_UPPER_LIMIT) 376 return CustomDiagInfo->getLevel(DiagID); 377 378 unsigned DiagClass = getBuiltinDiagClass(DiagID); 379 assert(DiagClass != CLASS_NOTE && "Cannot get diagnostic level of a note!"); 380 return getDiagnosticLevel(DiagID, DiagClass); 381} 382 383/// getDiagnosticLevel - Based on the way the client configured the Diagnostic 384/// object, classify the specified diagnostic ID into a Level, consumable by 385/// the DiagnosticClient. 386Diagnostic::Level 387Diagnostic::getDiagnosticLevel(unsigned DiagID, unsigned DiagClass) const { 388 // Specific non-error diagnostics may be mapped to various levels from ignored 389 // to error. Errors can only be mapped to fatal. 390 Diagnostic::Level Result = Diagnostic::Fatal; 391 392 // Get the mapping information, if unset, compute it lazily. 393 unsigned MappingInfo = getDiagnosticMappingInfo((diag::kind)DiagID); 394 if (MappingInfo == 0) { 395 MappingInfo = GetDefaultDiagMapping(DiagID); 396 setDiagnosticMappingInternal(DiagID, MappingInfo, false); 397 } 398 399 switch (MappingInfo & 7) { 400 default: assert(0 && "Unknown mapping!"); 401 case diag::MAP_IGNORE: 402 // Ignore this, unless this is an extension diagnostic and we're mapping 403 // them onto warnings or errors. 404 if (!isBuiltinExtensionDiag(DiagID) || // Not an extension 405 ExtBehavior == Ext_Ignore || // Extensions ignored anyway 406 (MappingInfo & 8) != 0) // User explicitly mapped it. 407 return Diagnostic::Ignored; 408 Result = Diagnostic::Warning; 409 if (ExtBehavior == Ext_Error) Result = Diagnostic::Error; 410 if (Result == Diagnostic::Error && ErrorsAsFatal) 411 Result = Diagnostic::Fatal; 412 break; 413 case diag::MAP_ERROR: 414 Result = Diagnostic::Error; 415 if (ErrorsAsFatal) 416 Result = Diagnostic::Fatal; 417 break; 418 case diag::MAP_FATAL: 419 Result = Diagnostic::Fatal; 420 break; 421 case diag::MAP_WARNING: 422 // If warnings are globally mapped to ignore or error, do it. 423 if (IgnoreAllWarnings) 424 return Diagnostic::Ignored; 425 426 Result = Diagnostic::Warning; 427 428 // If this is an extension diagnostic and we're in -pedantic-error mode, and 429 // if the user didn't explicitly map it, upgrade to an error. 430 if (ExtBehavior == Ext_Error && 431 (MappingInfo & 8) == 0 && 432 isBuiltinExtensionDiag(DiagID)) 433 Result = Diagnostic::Error; 434 435 if (WarningsAsErrors) 436 Result = Diagnostic::Error; 437 if (Result == Diagnostic::Error && ErrorsAsFatal) 438 Result = Diagnostic::Fatal; 439 break; 440 441 case diag::MAP_WARNING_NO_WERROR: 442 // Diagnostics specified with -Wno-error=foo should be set to warnings, but 443 // not be adjusted by -Werror or -pedantic-errors. 444 Result = Diagnostic::Warning; 445 446 // If warnings are globally mapped to ignore or error, do it. 447 if (IgnoreAllWarnings) 448 return Diagnostic::Ignored; 449 450 break; 451 452 case diag::MAP_ERROR_NO_WFATAL: 453 // Diagnostics specified as -Wno-fatal-error=foo should be errors, but 454 // unaffected by -Wfatal-errors. 455 Result = Diagnostic::Error; 456 break; 457 } 458 459 // Okay, we're about to return this as a "diagnostic to emit" one last check: 460 // if this is any sort of extension warning, and if we're in an __extension__ 461 // block, silence it. 462 if (AllExtensionsSilenced && isBuiltinExtensionDiag(DiagID)) 463 return Diagnostic::Ignored; 464 465 return Result; 466} 467 468struct WarningOption { 469 const char *Name; 470 const short *Members; 471 const short *SubGroups; 472}; 473 474#define GET_DIAG_ARRAYS 475#include "clang/Basic/DiagnosticGroups.inc" 476#undef GET_DIAG_ARRAYS 477 478// Second the table of options, sorted by name for fast binary lookup. 479static const WarningOption OptionTable[] = { 480#define GET_DIAG_TABLE 481#include "clang/Basic/DiagnosticGroups.inc" 482#undef GET_DIAG_TABLE 483}; 484static const size_t OptionTableSize = 485sizeof(OptionTable) / sizeof(OptionTable[0]); 486 487static bool WarningOptionCompare(const WarningOption &LHS, 488 const WarningOption &RHS) { 489 return strcmp(LHS.Name, RHS.Name) < 0; 490} 491 492static void MapGroupMembers(const WarningOption *Group, diag::Mapping Mapping, 493 Diagnostic &Diags) { 494 // Option exists, poke all the members of its diagnostic set. 495 if (const short *Member = Group->Members) { 496 for (; *Member != -1; ++Member) 497 Diags.setDiagnosticMapping(*Member, Mapping); 498 } 499 500 // Enable/disable all subgroups along with this one. 501 if (const short *SubGroups = Group->SubGroups) { 502 for (; *SubGroups != (short)-1; ++SubGroups) 503 MapGroupMembers(&OptionTable[(short)*SubGroups], Mapping, Diags); 504 } 505} 506 507/// setDiagnosticGroupMapping - Change an entire diagnostic group (e.g. 508/// "unknown-pragmas" to have the specified mapping. This returns true and 509/// ignores the request if "Group" was unknown, false otherwise. 510bool Diagnostic::setDiagnosticGroupMapping(const char *Group, 511 diag::Mapping Map) { 512 513 WarningOption Key = { Group, 0, 0 }; 514 const WarningOption *Found = 515 std::lower_bound(OptionTable, OptionTable + OptionTableSize, Key, 516 WarningOptionCompare); 517 if (Found == OptionTable + OptionTableSize || 518 strcmp(Found->Name, Group) != 0) 519 return true; // Option not found. 520 521 MapGroupMembers(Found, Map, *this); 522 return false; 523} 524 525 526/// ProcessDiag - This is the method used to report a diagnostic that is 527/// finally fully formed. 528bool Diagnostic::ProcessDiag() { 529 DiagnosticInfo Info(this); 530 531 if (SuppressAllDiagnostics) 532 return false; 533 534 // Figure out the diagnostic level of this message. 535 Diagnostic::Level DiagLevel; 536 unsigned DiagID = Info.getID(); 537 538 // ShouldEmitInSystemHeader - True if this diagnostic should be produced even 539 // in a system header. 540 bool ShouldEmitInSystemHeader; 541 542 if (DiagID >= diag::DIAG_UPPER_LIMIT) { 543 // Handle custom diagnostics, which cannot be mapped. 544 DiagLevel = CustomDiagInfo->getLevel(DiagID); 545 546 // Custom diagnostics always are emitted in system headers. 547 ShouldEmitInSystemHeader = true; 548 } else { 549 // Get the class of the diagnostic. If this is a NOTE, map it onto whatever 550 // the diagnostic level was for the previous diagnostic so that it is 551 // filtered the same as the previous diagnostic. 552 unsigned DiagClass = getBuiltinDiagClass(DiagID); 553 if (DiagClass == CLASS_NOTE) { 554 DiagLevel = Diagnostic::Note; 555 ShouldEmitInSystemHeader = false; // extra consideration is needed 556 } else { 557 // If this is not an error and we are in a system header, we ignore it. 558 // Check the original Diag ID here, because we also want to ignore 559 // extensions and warnings in -Werror and -pedantic-errors modes, which 560 // *map* warnings/extensions to errors. 561 ShouldEmitInSystemHeader = DiagClass == CLASS_ERROR; 562 563 DiagLevel = getDiagnosticLevel(DiagID, DiagClass); 564 } 565 } 566 567 if (DiagLevel != Diagnostic::Note) { 568 // Record that a fatal error occurred only when we see a second 569 // non-note diagnostic. This allows notes to be attached to the 570 // fatal error, but suppresses any diagnostics that follow those 571 // notes. 572 if (LastDiagLevel == Diagnostic::Fatal) 573 FatalErrorOccurred = true; 574 575 LastDiagLevel = DiagLevel; 576 } 577 578 // If a fatal error has already been emitted, silence all subsequent 579 // diagnostics. 580 if (FatalErrorOccurred) { 581 if (DiagLevel >= Diagnostic::Error) { 582 ++NumErrors; 583 ++NumErrorsSuppressed; 584 } 585 586 return false; 587 } 588 589 // If the client doesn't care about this message, don't issue it. If this is 590 // a note and the last real diagnostic was ignored, ignore it too. 591 if (DiagLevel == Diagnostic::Ignored || 592 (DiagLevel == Diagnostic::Note && LastDiagLevel == Diagnostic::Ignored)) 593 return false; 594 595 // If this diagnostic is in a system header and is not a clang error, suppress 596 // it. 597 if (SuppressSystemWarnings && !ShouldEmitInSystemHeader && 598 Info.getLocation().isValid() && 599 Info.getLocation().getInstantiationLoc().isInSystemHeader() && 600 (DiagLevel != Diagnostic::Note || LastDiagLevel == Diagnostic::Ignored)) { 601 LastDiagLevel = Diagnostic::Ignored; 602 return false; 603 } 604 605 if (DiagLevel >= Diagnostic::Error) { 606 ErrorOccurred = true; 607 ++NumErrors; 608 609 // If we've emitted a lot of errors, emit a fatal error after it to stop a 610 // flood of bogus errors. 611 if (ErrorLimit && NumErrors >= ErrorLimit && 612 DiagLevel == Diagnostic::Error) 613 SetDelayedDiagnostic(diag::fatal_too_many_errors); 614 } 615 616 // Finally, report it. 617 Client->HandleDiagnostic(DiagLevel, Info); 618 if (Client->IncludeInDiagnosticCounts()) { 619 if (DiagLevel == Diagnostic::Warning) 620 ++NumWarnings; 621 } 622 623 CurDiagID = ~0U; 624 625 return true; 626} 627 628bool DiagnosticBuilder::Emit() { 629 // If DiagObj is null, then its soul was stolen by the copy ctor 630 // or the user called Emit(). 631 if (DiagObj == 0) return false; 632 633 // When emitting diagnostics, we set the final argument count into 634 // the Diagnostic object. 635 DiagObj->NumDiagArgs = NumArgs; 636 DiagObj->NumDiagRanges = NumRanges; 637 DiagObj->NumFixItHints = NumFixItHints; 638 639 // Process the diagnostic, sending the accumulated information to the 640 // DiagnosticClient. 641 bool Emitted = DiagObj->ProcessDiag(); 642 643 // Clear out the current diagnostic object. 644 unsigned DiagID = DiagObj->CurDiagID; 645 DiagObj->Clear(); 646 647 // If there was a delayed diagnostic, emit it now. 648 if (DiagObj->DelayedDiagID && DiagObj->DelayedDiagID != DiagID) 649 DiagObj->ReportDelayed(); 650 651 // This diagnostic is dead. 652 DiagObj = 0; 653 654 return Emitted; 655} 656 657 658DiagnosticClient::~DiagnosticClient() {} 659 660 661/// ModifierIs - Return true if the specified modifier matches specified string. 662template <std::size_t StrLen> 663static bool ModifierIs(const char *Modifier, unsigned ModifierLen, 664 const char (&Str)[StrLen]) { 665 return StrLen-1 == ModifierLen && !memcmp(Modifier, Str, StrLen-1); 666} 667 668/// ScanForward - Scans forward, looking for the given character, skipping 669/// nested clauses and escaped characters. 670static const char *ScanFormat(const char *I, const char *E, char Target) { 671 unsigned Depth = 0; 672 673 for ( ; I != E; ++I) { 674 if (Depth == 0 && *I == Target) return I; 675 if (Depth != 0 && *I == '}') Depth--; 676 677 if (*I == '%') { 678 I++; 679 if (I == E) break; 680 681 // Escaped characters get implicitly skipped here. 682 683 // Format specifier. 684 if (!isdigit(*I) && !ispunct(*I)) { 685 for (I++; I != E && !isdigit(*I) && *I != '{'; I++) ; 686 if (I == E) break; 687 if (*I == '{') 688 Depth++; 689 } 690 } 691 } 692 return E; 693} 694 695/// HandleSelectModifier - Handle the integer 'select' modifier. This is used 696/// like this: %select{foo|bar|baz}2. This means that the integer argument 697/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'. 698/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'. 699/// This is very useful for certain classes of variant diagnostics. 700static void HandleSelectModifier(const DiagnosticInfo &DInfo, unsigned ValNo, 701 const char *Argument, unsigned ArgumentLen, 702 llvm::SmallVectorImpl<char> &OutStr) { 703 const char *ArgumentEnd = Argument+ArgumentLen; 704 705 // Skip over 'ValNo' |'s. 706 while (ValNo) { 707 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|'); 708 assert(NextVal != ArgumentEnd && "Value for integer select modifier was" 709 " larger than the number of options in the diagnostic string!"); 710 Argument = NextVal+1; // Skip this string. 711 --ValNo; 712 } 713 714 // Get the end of the value. This is either the } or the |. 715 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|'); 716 717 // Recursively format the result of the select clause into the output string. 718 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr); 719} 720 721/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the 722/// letter 's' to the string if the value is not 1. This is used in cases like 723/// this: "you idiot, you have %4 parameter%s4!". 724static void HandleIntegerSModifier(unsigned ValNo, 725 llvm::SmallVectorImpl<char> &OutStr) { 726 if (ValNo != 1) 727 OutStr.push_back('s'); 728} 729 730/// HandleOrdinalModifier - Handle the integer 'ord' modifier. This 731/// prints the ordinal form of the given integer, with 1 corresponding 732/// to the first ordinal. Currently this is hard-coded to use the 733/// English form. 734static void HandleOrdinalModifier(unsigned ValNo, 735 llvm::SmallVectorImpl<char> &OutStr) { 736 assert(ValNo != 0 && "ValNo must be strictly positive!"); 737 738 llvm::raw_svector_ostream Out(OutStr); 739 740 // We could use text forms for the first N ordinals, but the numeric 741 // forms are actually nicer in diagnostics because they stand out. 742 Out << ValNo; 743 744 // It is critically important that we do this perfectly for 745 // user-written sequences with over 100 elements. 746 switch (ValNo % 100) { 747 case 11: 748 case 12: 749 case 13: 750 Out << "th"; return; 751 default: 752 switch (ValNo % 10) { 753 case 1: Out << "st"; return; 754 case 2: Out << "nd"; return; 755 case 3: Out << "rd"; return; 756 default: Out << "th"; return; 757 } 758 } 759} 760 761 762/// PluralNumber - Parse an unsigned integer and advance Start. 763static unsigned PluralNumber(const char *&Start, const char *End) { 764 // Programming 101: Parse a decimal number :-) 765 unsigned Val = 0; 766 while (Start != End && *Start >= '0' && *Start <= '9') { 767 Val *= 10; 768 Val += *Start - '0'; 769 ++Start; 770 } 771 return Val; 772} 773 774/// TestPluralRange - Test if Val is in the parsed range. Modifies Start. 775static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) { 776 if (*Start != '[') { 777 unsigned Ref = PluralNumber(Start, End); 778 return Ref == Val; 779 } 780 781 ++Start; 782 unsigned Low = PluralNumber(Start, End); 783 assert(*Start == ',' && "Bad plural expression syntax: expected ,"); 784 ++Start; 785 unsigned High = PluralNumber(Start, End); 786 assert(*Start == ']' && "Bad plural expression syntax: expected )"); 787 ++Start; 788 return Low <= Val && Val <= High; 789} 790 791/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier. 792static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) { 793 // Empty condition? 794 if (*Start == ':') 795 return true; 796 797 while (1) { 798 char C = *Start; 799 if (C == '%') { 800 // Modulo expression 801 ++Start; 802 unsigned Arg = PluralNumber(Start, End); 803 assert(*Start == '=' && "Bad plural expression syntax: expected ="); 804 ++Start; 805 unsigned ValMod = ValNo % Arg; 806 if (TestPluralRange(ValMod, Start, End)) 807 return true; 808 } else { 809 assert((C == '[' || (C >= '0' && C <= '9')) && 810 "Bad plural expression syntax: unexpected character"); 811 // Range expression 812 if (TestPluralRange(ValNo, Start, End)) 813 return true; 814 } 815 816 // Scan for next or-expr part. 817 Start = std::find(Start, End, ','); 818 if (Start == End) 819 break; 820 ++Start; 821 } 822 return false; 823} 824 825/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used 826/// for complex plural forms, or in languages where all plurals are complex. 827/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are 828/// conditions that are tested in order, the form corresponding to the first 829/// that applies being emitted. The empty condition is always true, making the 830/// last form a default case. 831/// Conditions are simple boolean expressions, where n is the number argument. 832/// Here are the rules. 833/// condition := expression | empty 834/// empty := -> always true 835/// expression := numeric [',' expression] -> logical or 836/// numeric := range -> true if n in range 837/// | '%' number '=' range -> true if n % number in range 838/// range := number 839/// | '[' number ',' number ']' -> ranges are inclusive both ends 840/// 841/// Here are some examples from the GNU gettext manual written in this form: 842/// English: 843/// {1:form0|:form1} 844/// Latvian: 845/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0} 846/// Gaeilge: 847/// {1:form0|2:form1|:form2} 848/// Romanian: 849/// {1:form0|0,%100=[1,19]:form1|:form2} 850/// Lithuanian: 851/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1} 852/// Russian (requires repeated form): 853/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2} 854/// Slovak 855/// {1:form0|[2,4]:form1|:form2} 856/// Polish (requires repeated form): 857/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2} 858static void HandlePluralModifier(unsigned ValNo, 859 const char *Argument, unsigned ArgumentLen, 860 llvm::SmallVectorImpl<char> &OutStr) { 861 const char *ArgumentEnd = Argument + ArgumentLen; 862 while (1) { 863 assert(Argument < ArgumentEnd && "Plural expression didn't match."); 864 const char *ExprEnd = Argument; 865 while (*ExprEnd != ':') { 866 assert(ExprEnd != ArgumentEnd && "Plural missing expression end"); 867 ++ExprEnd; 868 } 869 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) { 870 Argument = ExprEnd + 1; 871 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|'); 872 OutStr.append(Argument, ExprEnd); 873 return; 874 } 875 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1; 876 } 877} 878 879 880/// FormatDiagnostic - Format this diagnostic into a string, substituting the 881/// formal arguments into the %0 slots. The result is appended onto the Str 882/// array. 883void DiagnosticInfo:: 884FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const { 885 const char *DiagStr = getDiags()->getDescription(getID()); 886 const char *DiagEnd = DiagStr+strlen(DiagStr); 887 888 FormatDiagnostic(DiagStr, DiagEnd, OutStr); 889} 890 891void DiagnosticInfo:: 892FormatDiagnostic(const char *DiagStr, const char *DiagEnd, 893 llvm::SmallVectorImpl<char> &OutStr) const { 894 895 /// FormattedArgs - Keep track of all of the arguments formatted by 896 /// ConvertArgToString and pass them into subsequent calls to 897 /// ConvertArgToString, allowing the implementation to avoid redundancies in 898 /// obvious cases. 899 llvm::SmallVector<Diagnostic::ArgumentValue, 8> FormattedArgs; 900 901 while (DiagStr != DiagEnd) { 902 if (DiagStr[0] != '%') { 903 // Append non-%0 substrings to Str if we have one. 904 const char *StrEnd = std::find(DiagStr, DiagEnd, '%'); 905 OutStr.append(DiagStr, StrEnd); 906 DiagStr = StrEnd; 907 continue; 908 } else if (ispunct(DiagStr[1])) { 909 OutStr.push_back(DiagStr[1]); // %% -> %. 910 DiagStr += 2; 911 continue; 912 } 913 914 // Skip the %. 915 ++DiagStr; 916 917 // This must be a placeholder for a diagnostic argument. The format for a 918 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0". 919 // The digit is a number from 0-9 indicating which argument this comes from. 920 // The modifier is a string of digits from the set [-a-z]+, arguments is a 921 // brace enclosed string. 922 const char *Modifier = 0, *Argument = 0; 923 unsigned ModifierLen = 0, ArgumentLen = 0; 924 925 // Check to see if we have a modifier. If so eat it. 926 if (!isdigit(DiagStr[0])) { 927 Modifier = DiagStr; 928 while (DiagStr[0] == '-' || 929 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z')) 930 ++DiagStr; 931 ModifierLen = DiagStr-Modifier; 932 933 // If we have an argument, get it next. 934 if (DiagStr[0] == '{') { 935 ++DiagStr; // Skip {. 936 Argument = DiagStr; 937 938 DiagStr = ScanFormat(DiagStr, DiagEnd, '}'); 939 assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!"); 940 ArgumentLen = DiagStr-Argument; 941 ++DiagStr; // Skip }. 942 } 943 } 944 945 assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic"); 946 unsigned ArgNo = *DiagStr++ - '0'; 947 948 Diagnostic::ArgumentKind Kind = getArgKind(ArgNo); 949 950 switch (Kind) { 951 // ---- STRINGS ---- 952 case Diagnostic::ak_std_string: { 953 const std::string &S = getArgStdStr(ArgNo); 954 assert(ModifierLen == 0 && "No modifiers for strings yet"); 955 OutStr.append(S.begin(), S.end()); 956 break; 957 } 958 case Diagnostic::ak_c_string: { 959 const char *S = getArgCStr(ArgNo); 960 assert(ModifierLen == 0 && "No modifiers for strings yet"); 961 962 // Don't crash if get passed a null pointer by accident. 963 if (!S) 964 S = "(null)"; 965 966 OutStr.append(S, S + strlen(S)); 967 break; 968 } 969 // ---- INTEGERS ---- 970 case Diagnostic::ak_sint: { 971 int Val = getArgSInt(ArgNo); 972 973 if (ModifierIs(Modifier, ModifierLen, "select")) { 974 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen, OutStr); 975 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 976 HandleIntegerSModifier(Val, OutStr); 977 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 978 HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr); 979 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 980 HandleOrdinalModifier((unsigned)Val, OutStr); 981 } else { 982 assert(ModifierLen == 0 && "Unknown integer modifier"); 983 llvm::raw_svector_ostream(OutStr) << Val; 984 } 985 break; 986 } 987 case Diagnostic::ak_uint: { 988 unsigned Val = getArgUInt(ArgNo); 989 990 if (ModifierIs(Modifier, ModifierLen, "select")) { 991 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr); 992 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 993 HandleIntegerSModifier(Val, OutStr); 994 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 995 HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr); 996 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { 997 HandleOrdinalModifier(Val, OutStr); 998 } else { 999 assert(ModifierLen == 0 && "Unknown integer modifier"); 1000 llvm::raw_svector_ostream(OutStr) << Val; 1001 } 1002 break; 1003 } 1004 // ---- NAMES and TYPES ---- 1005 case Diagnostic::ak_identifierinfo: { 1006 const IdentifierInfo *II = getArgIdentifier(ArgNo); 1007 assert(ModifierLen == 0 && "No modifiers for strings yet"); 1008 1009 // Don't crash if get passed a null pointer by accident. 1010 if (!II) { 1011 const char *S = "(null)"; 1012 OutStr.append(S, S + strlen(S)); 1013 continue; 1014 } 1015 1016 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\''; 1017 break; 1018 } 1019 case Diagnostic::ak_qualtype: 1020 case Diagnostic::ak_declarationname: 1021 case Diagnostic::ak_nameddecl: 1022 case Diagnostic::ak_nestednamespec: 1023 case Diagnostic::ak_declcontext: 1024 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo), 1025 Modifier, ModifierLen, 1026 Argument, ArgumentLen, 1027 FormattedArgs.data(), FormattedArgs.size(), 1028 OutStr); 1029 break; 1030 } 1031 1032 // Remember this argument info for subsequent formatting operations. Turn 1033 // std::strings into a null terminated string to make it be the same case as 1034 // all the other ones. 1035 if (Kind != Diagnostic::ak_std_string) 1036 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo))); 1037 else 1038 FormattedArgs.push_back(std::make_pair(Diagnostic::ak_c_string, 1039 (intptr_t)getArgStdStr(ArgNo).c_str())); 1040 1041 } 1042} 1043 1044StoredDiagnostic::StoredDiagnostic() { } 1045 1046StoredDiagnostic::StoredDiagnostic(Diagnostic::Level Level, 1047 llvm::StringRef Message) 1048 : Level(Level), Loc(), Message(Message) { } 1049 1050StoredDiagnostic::StoredDiagnostic(Diagnostic::Level Level, 1051 const DiagnosticInfo &Info) 1052 : Level(Level), Loc(Info.getLocation()) { 1053 llvm::SmallString<64> Message; 1054 Info.FormatDiagnostic(Message); 1055 this->Message.assign(Message.begin(), Message.end()); 1056 1057 Ranges.reserve(Info.getNumRanges()); 1058 for (unsigned I = 0, N = Info.getNumRanges(); I != N; ++I) 1059 Ranges.push_back(Info.getRange(I)); 1060 1061 FixIts.reserve(Info.getNumFixItHints()); 1062 for (unsigned I = 0, N = Info.getNumFixItHints(); I != N; ++I) 1063 FixIts.push_back(Info.getFixItHint(I)); 1064} 1065 1066StoredDiagnostic::~StoredDiagnostic() { } 1067 1068static void WriteUnsigned(llvm::raw_ostream &OS, unsigned Value) { 1069 OS.write((const char *)&Value, sizeof(unsigned)); 1070} 1071 1072static void WriteString(llvm::raw_ostream &OS, llvm::StringRef String) { 1073 WriteUnsigned(OS, String.size()); 1074 OS.write(String.data(), String.size()); 1075} 1076 1077static void WriteSourceLocation(llvm::raw_ostream &OS, 1078 SourceManager *SM, 1079 SourceLocation Location) { 1080 if (!SM || Location.isInvalid()) { 1081 // If we don't have a source manager or this location is invalid, 1082 // just write an invalid location. 1083 WriteUnsigned(OS, 0); 1084 WriteUnsigned(OS, 0); 1085 WriteUnsigned(OS, 0); 1086 return; 1087 } 1088 1089 Location = SM->getInstantiationLoc(Location); 1090 std::pair<FileID, unsigned> Decomposed = SM->getDecomposedLoc(Location); 1091 1092 const FileEntry *FE = SM->getFileEntryForID(Decomposed.first); 1093 if (FE) 1094 WriteString(OS, FE->getName()); 1095 else { 1096 // Fallback to using the buffer name when there is no entry. 1097 WriteString(OS, SM->getBuffer(Decomposed.first)->getBufferIdentifier()); 1098 } 1099 1100 WriteUnsigned(OS, SM->getLineNumber(Decomposed.first, Decomposed.second)); 1101 WriteUnsigned(OS, SM->getColumnNumber(Decomposed.first, Decomposed.second)); 1102} 1103 1104void StoredDiagnostic::Serialize(llvm::raw_ostream &OS) const { 1105 SourceManager *SM = 0; 1106 if (getLocation().isValid()) 1107 SM = &const_cast<SourceManager &>(getLocation().getManager()); 1108 1109 // Write a short header to help identify diagnostics. 1110 OS << (char)0x06 << (char)0x07; 1111 1112 // Write the diagnostic level and location. 1113 WriteUnsigned(OS, (unsigned)Level); 1114 WriteSourceLocation(OS, SM, getLocation()); 1115 1116 // Write the diagnostic message. 1117 llvm::SmallString<64> Message; 1118 WriteString(OS, getMessage()); 1119 1120 // Count the number of ranges that don't point into macros, since 1121 // only simple file ranges serialize well. 1122 unsigned NumNonMacroRanges = 0; 1123 for (range_iterator R = range_begin(), REnd = range_end(); R != REnd; ++R) { 1124 if (R->getBegin().isMacroID() || R->getEnd().isMacroID()) 1125 continue; 1126 1127 ++NumNonMacroRanges; 1128 } 1129 1130 // Write the ranges. 1131 WriteUnsigned(OS, NumNonMacroRanges); 1132 if (NumNonMacroRanges) { 1133 for (range_iterator R = range_begin(), REnd = range_end(); R != REnd; ++R) { 1134 if (R->getBegin().isMacroID() || R->getEnd().isMacroID()) 1135 continue; 1136 1137 WriteSourceLocation(OS, SM, R->getBegin()); 1138 WriteSourceLocation(OS, SM, R->getEnd()); 1139 WriteUnsigned(OS, R->isTokenRange()); 1140 } 1141 } 1142 1143 // Determine if all of the fix-its involve rewrites with simple file 1144 // locations (not in macro instantiations). If so, we can write 1145 // fix-it information. 1146 unsigned NumFixIts = 0; 1147 for (fixit_iterator F = fixit_begin(), FEnd = fixit_end(); F != FEnd; ++F) { 1148 if (F->RemoveRange.isValid() && 1149 (F->RemoveRange.getBegin().isMacroID() || 1150 F->RemoveRange.getEnd().isMacroID())) { 1151 NumFixIts = 0; 1152 break; 1153 } 1154 1155 if (F->InsertionLoc.isValid() && F->InsertionLoc.isMacroID()) { 1156 NumFixIts = 0; 1157 break; 1158 } 1159 1160 ++NumFixIts; 1161 } 1162 1163 // Write the fix-its. 1164 WriteUnsigned(OS, NumFixIts); 1165 for (fixit_iterator F = fixit_begin(), FEnd = fixit_end(); F != FEnd; ++F) { 1166 WriteSourceLocation(OS, SM, F->RemoveRange.getBegin()); 1167 WriteSourceLocation(OS, SM, F->RemoveRange.getEnd()); 1168 WriteUnsigned(OS, F->RemoveRange.isTokenRange()); 1169 WriteSourceLocation(OS, SM, F->InsertionLoc); 1170 WriteString(OS, F->CodeToInsert); 1171 } 1172} 1173 1174static bool ReadUnsigned(const char *&Memory, const char *MemoryEnd, 1175 unsigned &Value) { 1176 if (Memory + sizeof(unsigned) > MemoryEnd) 1177 return true; 1178 1179 memmove(&Value, Memory, sizeof(unsigned)); 1180 Memory += sizeof(unsigned); 1181 return false; 1182} 1183 1184static bool ReadSourceLocation(FileManager &FM, SourceManager &SM, 1185 const char *&Memory, const char *MemoryEnd, 1186 SourceLocation &Location) { 1187 // Read the filename. 1188 unsigned FileNameLen = 0; 1189 if (ReadUnsigned(Memory, MemoryEnd, FileNameLen) || 1190 Memory + FileNameLen > MemoryEnd) 1191 return true; 1192 1193 llvm::StringRef FileName(Memory, FileNameLen); 1194 Memory += FileNameLen; 1195 1196 // Read the line, column. 1197 unsigned Line = 0, Column = 0; 1198 if (ReadUnsigned(Memory, MemoryEnd, Line) || 1199 ReadUnsigned(Memory, MemoryEnd, Column)) 1200 return true; 1201 1202 if (FileName.empty()) { 1203 Location = SourceLocation(); 1204 return false; 1205 } 1206 1207 const FileEntry *File = FM.getFile(FileName); 1208 if (!File) 1209 return true; 1210 1211 // Make sure that this file has an entry in the source manager. 1212 if (!SM.hasFileInfo(File)) 1213 SM.createFileID(File, SourceLocation(), SrcMgr::C_User); 1214 1215 Location = SM.getLocation(File, Line, Column); 1216 return false; 1217} 1218 1219StoredDiagnostic 1220StoredDiagnostic::Deserialize(FileManager &FM, SourceManager &SM, 1221 const char *&Memory, const char *MemoryEnd) { 1222 while (true) { 1223 if (Memory == MemoryEnd) 1224 return StoredDiagnostic(); 1225 1226 if (*Memory != 0x06) { 1227 ++Memory; 1228 continue; 1229 } 1230 1231 ++Memory; 1232 if (Memory == MemoryEnd) 1233 return StoredDiagnostic(); 1234 1235 if (*Memory != 0x07) { 1236 ++Memory; 1237 continue; 1238 } 1239 1240 // We found the header. We're done. 1241 ++Memory; 1242 break; 1243 } 1244 1245 // Read the severity level. 1246 unsigned Level = 0; 1247 if (ReadUnsigned(Memory, MemoryEnd, Level) || Level > Diagnostic::Fatal) 1248 return StoredDiagnostic(); 1249 1250 // Read the source location. 1251 SourceLocation Location; 1252 if (ReadSourceLocation(FM, SM, Memory, MemoryEnd, Location)) 1253 return StoredDiagnostic(); 1254 1255 // Read the diagnostic text. 1256 if (Memory == MemoryEnd) 1257 return StoredDiagnostic(); 1258 1259 unsigned MessageLen = 0; 1260 if (ReadUnsigned(Memory, MemoryEnd, MessageLen) || 1261 Memory + MessageLen > MemoryEnd) 1262 return StoredDiagnostic(); 1263 1264 llvm::StringRef Message(Memory, MessageLen); 1265 Memory += MessageLen; 1266 1267 1268 // At this point, we have enough information to form a diagnostic. Do so. 1269 StoredDiagnostic Diag; 1270 Diag.Level = (Diagnostic::Level)Level; 1271 Diag.Loc = FullSourceLoc(Location, SM); 1272 Diag.Message = Message; 1273 if (Memory == MemoryEnd) 1274 return Diag; 1275 1276 // Read the source ranges. 1277 unsigned NumSourceRanges = 0; 1278 if (ReadUnsigned(Memory, MemoryEnd, NumSourceRanges)) 1279 return Diag; 1280 for (unsigned I = 0; I != NumSourceRanges; ++I) { 1281 SourceLocation Begin, End; 1282 unsigned IsTokenRange; 1283 if (ReadSourceLocation(FM, SM, Memory, MemoryEnd, Begin) || 1284 ReadSourceLocation(FM, SM, Memory, MemoryEnd, End) || 1285 ReadUnsigned(Memory, MemoryEnd, IsTokenRange)) 1286 return Diag; 1287 1288 Diag.Ranges.push_back(CharSourceRange(SourceRange(Begin, End), 1289 IsTokenRange)); 1290 } 1291 1292 // Read the fix-it hints. 1293 unsigned NumFixIts = 0; 1294 if (ReadUnsigned(Memory, MemoryEnd, NumFixIts)) 1295 return Diag; 1296 for (unsigned I = 0; I != NumFixIts; ++I) { 1297 SourceLocation RemoveBegin, RemoveEnd, InsertionLoc; 1298 unsigned InsertLen = 0, RemoveIsTokenRange; 1299 if (ReadSourceLocation(FM, SM, Memory, MemoryEnd, RemoveBegin) || 1300 ReadSourceLocation(FM, SM, Memory, MemoryEnd, RemoveEnd) || 1301 ReadUnsigned(Memory, MemoryEnd, RemoveIsTokenRange) || 1302 ReadSourceLocation(FM, SM, Memory, MemoryEnd, InsertionLoc) || 1303 ReadUnsigned(Memory, MemoryEnd, InsertLen) || 1304 Memory + InsertLen > MemoryEnd) { 1305 Diag.FixIts.clear(); 1306 return Diag; 1307 } 1308 1309 FixItHint Hint; 1310 Hint.RemoveRange = CharSourceRange(SourceRange(RemoveBegin, RemoveEnd), 1311 RemoveIsTokenRange); 1312 Hint.InsertionLoc = InsertionLoc; 1313 Hint.CodeToInsert.assign(Memory, Memory + InsertLen); 1314 Memory += InsertLen; 1315 Diag.FixIts.push_back(Hint); 1316 } 1317 1318 return Diag; 1319} 1320 1321/// IncludeInDiagnosticCounts - This method (whose default implementation 1322/// returns true) indicates whether the diagnostics handled by this 1323/// DiagnosticClient should be included in the number of diagnostics 1324/// reported by Diagnostic. 1325bool DiagnosticClient::IncludeInDiagnosticCounts() const { return true; } 1326 1327PartialDiagnostic::StorageAllocator::StorageAllocator() { 1328 for (unsigned I = 0; I != NumCached; ++I) 1329 FreeList[I] = Cached + I; 1330 NumFreeListEntries = NumCached; 1331} 1332 1333PartialDiagnostic::StorageAllocator::~StorageAllocator() { 1334 assert(NumFreeListEntries == NumCached && "A partial is on the lamb"); 1335} 1336