Diagnostic.cpp revision 3801d71fbeb6e74a22cdd6a858e10d887bc29c7a
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/SourceLocation.h" 17#include "llvm/ADT/SmallVector.h" 18#include "llvm/ADT/StringExtras.h" 19#include <vector> 20#include <map> 21#include <cstring> 22using namespace clang; 23 24//===----------------------------------------------------------------------===// 25// Builtin Diagnostic information 26//===----------------------------------------------------------------------===// 27 28/// Flag values for diagnostics. 29enum { 30 // Diagnostic classes. 31 NOTE = 0x01, 32 WARNING = 0x02, 33 EXTENSION = 0x03, 34 EXTWARN = 0x04, 35 ERROR = 0x05, 36 FATAL = 0x06, 37 class_mask = 0x07 38}; 39 40/// DiagnosticFlags - A set of flags, or'd together, that describe the 41/// diagnostic. 42#define DIAG(ENUM,FLAGS,DESC) FLAGS, 43static unsigned char DiagnosticFlagsCommon[] = { 44#include "clang/Basic/DiagnosticCommonKinds.inc" 45 0 46}; 47static unsigned char DiagnosticFlagsDriver[] = { 48#include "clang/Basic/DiagnosticDriverKinds.inc" 49 0 50}; 51static unsigned char DiagnosticFlagsFrontend[] = { 52#include "clang/Basic/DiagnosticFrontendKinds.inc" 53 0 54}; 55static unsigned char DiagnosticFlagsLex[] = { 56#include "clang/Basic/DiagnosticLexKinds.inc" 57 0 58}; 59static unsigned char DiagnosticFlagsParse[] = { 60#include "clang/Basic/DiagnosticParseKinds.inc" 61 0 62}; 63static unsigned char DiagnosticFlagsAST[] = { 64#include "clang/Basic/DiagnosticASTKinds.inc" 65 0 66}; 67static unsigned char DiagnosticFlagsSema[] = { 68#include "clang/Basic/DiagnosticSemaKinds.inc" 69 0 70}; 71static unsigned char DiagnosticFlagsAnalysis[] = { 72#include "clang/Basic/DiagnosticAnalysisKinds.inc" 73 0 74}; 75#undef DIAG 76 77/// getDiagClass - Return the class field of the diagnostic. 78/// 79static unsigned getBuiltinDiagClass(unsigned DiagID) { 80 assert(DiagID < diag::DIAG_UPPER_LIMIT && 81 "Diagnostic ID out of range!"); 82 unsigned res; 83 if (DiagID < diag::DIAG_START_DRIVER) 84 res = DiagnosticFlagsCommon[DiagID]; 85 else if (DiagID < diag::DIAG_START_FRONTEND) 86 res = DiagnosticFlagsDriver[DiagID - diag::DIAG_START_DRIVER - 1]; 87 else if (DiagID < diag::DIAG_START_LEX) 88 res = DiagnosticFlagsFrontend[DiagID - diag::DIAG_START_FRONTEND - 1]; 89 else if (DiagID < diag::DIAG_START_PARSE) 90 res = DiagnosticFlagsLex[DiagID - diag::DIAG_START_LEX - 1]; 91 else if (DiagID < diag::DIAG_START_AST) 92 res = DiagnosticFlagsParse[DiagID - diag::DIAG_START_PARSE - 1]; 93 else if (DiagID < diag::DIAG_START_SEMA) 94 res = DiagnosticFlagsAST[DiagID - diag::DIAG_START_AST - 1]; 95 else if (DiagID < diag::DIAG_START_ANALYSIS) 96 res = DiagnosticFlagsSema[DiagID - diag::DIAG_START_SEMA - 1]; 97 else 98 res = DiagnosticFlagsAnalysis[DiagID - diag::DIAG_START_ANALYSIS - 1]; 99 return res & class_mask; 100} 101 102/// DiagnosticText - An english message to print for the diagnostic. These 103/// should be localized. 104#define DIAG(ENUM,FLAGS,DESC) DESC, 105static const char * const DiagnosticTextCommon[] = { 106#include "clang/Basic/DiagnosticCommonKinds.inc" 107 0 108}; 109static const char * const DiagnosticTextDriver[] = { 110#include "clang/Basic/DiagnosticDriverKinds.inc" 111 0 112}; 113static const char * const DiagnosticTextFrontend[] = { 114#include "clang/Basic/DiagnosticFrontendKinds.inc" 115 0 116}; 117static const char * const DiagnosticTextLex[] = { 118#include "clang/Basic/DiagnosticLexKinds.inc" 119 0 120}; 121static const char * const DiagnosticTextParse[] = { 122#include "clang/Basic/DiagnosticParseKinds.inc" 123 0 124}; 125static const char * const DiagnosticTextAST[] = { 126#include "clang/Basic/DiagnosticASTKinds.inc" 127 0 128}; 129static const char * const DiagnosticTextSema[] = { 130#include "clang/Basic/DiagnosticSemaKinds.inc" 131 0 132}; 133static const char * const DiagnosticTextAnalysis[] = { 134#include "clang/Basic/DiagnosticAnalysisKinds.inc" 135 0 136}; 137#undef DIAG 138 139//===----------------------------------------------------------------------===// 140// Custom Diagnostic information 141//===----------------------------------------------------------------------===// 142 143namespace clang { 144 namespace diag { 145 class CustomDiagInfo { 146 typedef std::pair<Diagnostic::Level, std::string> DiagDesc; 147 std::vector<DiagDesc> DiagInfo; 148 std::map<DiagDesc, unsigned> DiagIDs; 149 public: 150 151 /// getDescription - Return the description of the specified custom 152 /// diagnostic. 153 const char *getDescription(unsigned DiagID) const { 154 assert(this && DiagID-DIAG_UPPER_LIMIT < DiagInfo.size() && 155 "Invalid diagnosic ID"); 156 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].second.c_str(); 157 } 158 159 /// getLevel - Return the level of the specified custom diagnostic. 160 Diagnostic::Level getLevel(unsigned DiagID) const { 161 assert(this && DiagID-DIAG_UPPER_LIMIT < DiagInfo.size() && 162 "Invalid diagnosic ID"); 163 return DiagInfo[DiagID-DIAG_UPPER_LIMIT].first; 164 } 165 166 unsigned getOrCreateDiagID(Diagnostic::Level L, const char *Message, 167 Diagnostic &Diags) { 168 DiagDesc D(L, Message); 169 // Check to see if it already exists. 170 std::map<DiagDesc, unsigned>::iterator I = DiagIDs.lower_bound(D); 171 if (I != DiagIDs.end() && I->first == D) 172 return I->second; 173 174 // If not, assign a new ID. 175 unsigned ID = DiagInfo.size()+DIAG_UPPER_LIMIT; 176 DiagIDs.insert(std::make_pair(D, ID)); 177 DiagInfo.push_back(D); 178 179 // If this is a warning, and all warnings are supposed to map to errors, 180 // insert the mapping now. 181 if (L == Diagnostic::Warning && Diags.getWarningsAsErrors()) 182 Diags.setDiagnosticMapping((diag::kind)ID, diag::MAP_ERROR); 183 return ID; 184 } 185 }; 186 187 } // end diag namespace 188} // end clang namespace 189 190 191//===----------------------------------------------------------------------===// 192// Common Diagnostic implementation 193//===----------------------------------------------------------------------===// 194 195static void DummyArgToStringFn(Diagnostic::ArgumentKind AK, intptr_t QT, 196 const char *Modifier, unsigned ML, 197 const char *Argument, unsigned ArgLen, 198 llvm::SmallVectorImpl<char> &Output, 199 void *Cookie) { 200 const char *Str = "<can't format argument>"; 201 Output.append(Str, Str+strlen(Str)); 202} 203 204 205Diagnostic::Diagnostic(DiagnosticClient *client) : Client(client) { 206 IgnoreAllWarnings = false; 207 WarningsAsErrors = false; 208 WarnOnExtensions = false; 209 ErrorOnExtensions = false; 210 SuppressSystemWarnings = false; 211 // Clear all mappings, setting them to MAP_DEFAULT. 212 memset(DiagMappings, 0, sizeof(DiagMappings)); 213 214 ErrorOccurred = false; 215 FatalErrorOccurred = false; 216 NumDiagnostics = 0; 217 NumErrors = 0; 218 CustomDiagInfo = 0; 219 CurDiagID = ~0U; 220 LastDiagLevel = Fatal; 221 222 ArgToStringFn = DummyArgToStringFn; 223 ArgToStringCookie = 0; 224 225 InPostDiagnosticHook = false; 226} 227 228Diagnostic::~Diagnostic() { 229 delete CustomDiagInfo; 230} 231 232/// getCustomDiagID - Return an ID for a diagnostic with the specified message 233/// and level. If this is the first request for this diagnosic, it is 234/// registered and created, otherwise the existing ID is returned. 235unsigned Diagnostic::getCustomDiagID(Level L, const char *Message) { 236 if (CustomDiagInfo == 0) 237 CustomDiagInfo = new diag::CustomDiagInfo(); 238 return CustomDiagInfo->getOrCreateDiagID(L, Message, *this); 239} 240 241 242/// isBuiltinWarningOrExtension - Return true if the unmapped diagnostic 243/// level of the specified diagnostic ID is a Warning or Extension. 244/// This only works on builtin diagnostics, not custom ones, and is not legal to 245/// call on NOTEs. 246bool Diagnostic::isBuiltinWarningOrExtension(unsigned DiagID) { 247 return DiagID < diag::DIAG_UPPER_LIMIT && getBuiltinDiagClass(DiagID) < ERROR; 248} 249 250/// \brief Determine whether the given built-in diagnostic ID is a 251/// Note. 252bool Diagnostic::isBuiltinNote(unsigned DiagID) { 253 return DiagID < diag::DIAG_UPPER_LIMIT && getBuiltinDiagClass(DiagID) == NOTE; 254} 255 256 257/// getDescription - Given a diagnostic ID, return a description of the 258/// issue. 259const char *Diagnostic::getDescription(unsigned DiagID) const { 260 if (DiagID < diag::DIAG_START_DRIVER) 261 return DiagnosticTextCommon[DiagID]; 262 else if (DiagID < diag::DIAG_START_FRONTEND) 263 return DiagnosticTextDriver[DiagID - diag::DIAG_START_DRIVER - 1]; 264 else if (DiagID < diag::DIAG_START_LEX) 265 return DiagnosticTextFrontend[DiagID - diag::DIAG_START_FRONTEND - 1]; 266 else if (DiagID < diag::DIAG_START_PARSE) 267 return DiagnosticTextLex[DiagID - diag::DIAG_START_LEX - 1]; 268 else if (DiagID < diag::DIAG_START_AST) 269 return DiagnosticTextParse[DiagID - diag::DIAG_START_PARSE - 1]; 270 else if (DiagID < diag::DIAG_START_SEMA) 271 return DiagnosticTextAST[DiagID - diag::DIAG_START_AST - 1]; 272 else if (DiagID < diag::DIAG_START_ANALYSIS) 273 return DiagnosticTextSema[DiagID - diag::DIAG_START_SEMA - 1]; 274 else if (DiagID < diag::DIAG_UPPER_LIMIT) 275 return DiagnosticTextAnalysis[DiagID - diag::DIAG_START_ANALYSIS - 1]; 276 return CustomDiagInfo->getDescription(DiagID); 277} 278 279/// getDiagnosticLevel - Based on the way the client configured the Diagnostic 280/// object, classify the specified diagnostic ID into a Level, consumable by 281/// the DiagnosticClient. 282Diagnostic::Level Diagnostic::getDiagnosticLevel(unsigned DiagID) const { 283 // Handle custom diagnostics, which cannot be mapped. 284 if (DiagID >= diag::DIAG_UPPER_LIMIT) 285 return CustomDiagInfo->getLevel(DiagID); 286 287 unsigned DiagClass = getBuiltinDiagClass(DiagID); 288 assert(DiagClass != NOTE && "Cannot get the diagnostic level of a note!"); 289 return getDiagnosticLevel(DiagID, DiagClass); 290} 291 292/// getDiagnosticLevel - Based on the way the client configured the Diagnostic 293/// object, classify the specified diagnostic ID into a Level, consumable by 294/// the DiagnosticClient. 295Diagnostic::Level 296Diagnostic::getDiagnosticLevel(unsigned DiagID, unsigned DiagClass) const { 297 // Specific non-error diagnostics may be mapped to various levels from ignored 298 // to error. Errors can only be mapped to fatal. 299 switch (getDiagnosticMapping((diag::kind)DiagID)) { 300 case diag::MAP_DEFAULT: break; 301 case diag::MAP_IGNORE: return Diagnostic::Ignored; 302 case diag::MAP_WARNING: DiagClass = WARNING; break; 303 case diag::MAP_ERROR: DiagClass = ERROR; break; 304 case diag::MAP_FATAL: DiagClass = FATAL; break; 305 } 306 307 // Map diagnostic classes based on command line argument settings. 308 if (DiagClass == EXTENSION) { 309 if (ErrorOnExtensions) 310 DiagClass = ERROR; 311 else if (WarnOnExtensions) 312 DiagClass = WARNING; 313 else 314 return Ignored; 315 } else if (DiagClass == EXTWARN) { 316 DiagClass = ErrorOnExtensions ? ERROR : WARNING; 317 } 318 319 // If warnings are globally mapped to ignore or error, do it. 320 if (DiagClass == WARNING) { 321 if (IgnoreAllWarnings) 322 return Diagnostic::Ignored; 323 if (WarningsAsErrors) 324 DiagClass = ERROR; 325 } 326 327 switch (DiagClass) { 328 default: assert(0 && "Unknown diagnostic class!"); 329 case WARNING: return Diagnostic::Warning; 330 case ERROR: return Diagnostic::Error; 331 case FATAL: return Diagnostic::Fatal; 332 } 333} 334 335/// ProcessDiag - This is the method used to report a diagnostic that is 336/// finally fully formed. 337void Diagnostic::ProcessDiag() { 338 DiagnosticInfo Info(this); 339 340 // If a fatal error has already been emitted, silence all subsequent 341 // diagnostics. 342 if (FatalErrorOccurred) 343 return; 344 345 // Figure out the diagnostic level of this message. 346 Diagnostic::Level DiagLevel; 347 unsigned DiagID = Info.getID(); 348 349 // ShouldEmitInSystemHeader - True if this diagnostic should be produced even 350 // in a system header. 351 bool ShouldEmitInSystemHeader; 352 353 if (DiagID >= diag::DIAG_UPPER_LIMIT) { 354 // Handle custom diagnostics, which cannot be mapped. 355 DiagLevel = CustomDiagInfo->getLevel(DiagID); 356 357 // Custom diagnostics always are emitted in system headers. 358 ShouldEmitInSystemHeader = true; 359 } else { 360 // Get the class of the diagnostic. If this is a NOTE, map it onto whatever 361 // the diagnostic level was for the previous diagnostic so that it is 362 // filtered the same as the previous diagnostic. 363 unsigned DiagClass = getBuiltinDiagClass(DiagID); 364 if (DiagClass == NOTE) { 365 DiagLevel = Diagnostic::Note; 366 ShouldEmitInSystemHeader = false; // extra consideration is needed 367 } else { 368 // If this is not an error and we are in a system header, we ignore it. 369 // Check the original Diag ID here, because we also want to ignore 370 // extensions and warnings in -Werror and -pedantic-errors modes, which 371 // *map* warnings/extensions to errors. 372 ShouldEmitInSystemHeader = DiagClass == ERROR; 373 374 DiagLevel = getDiagnosticLevel(DiagID, DiagClass); 375 } 376 } 377 378 if (DiagLevel != Diagnostic::Note) 379 LastDiagLevel = DiagLevel; 380 381 // If the client doesn't care about this message, don't issue it. If this is 382 // a note and the last real diagnostic was ignored, ignore it too. 383 if (DiagLevel == Diagnostic::Ignored || 384 (DiagLevel == Diagnostic::Note && LastDiagLevel == Diagnostic::Ignored)) 385 return; 386 387 // If this diagnostic is in a system header and is not a clang error, suppress 388 // it. 389 if (SuppressSystemWarnings && !ShouldEmitInSystemHeader && 390 Info.getLocation().isValid() && 391 Info.getLocation().getSpellingLoc().isInSystemHeader() && 392 (DiagLevel != Diagnostic::Note || LastDiagLevel == Diagnostic::Ignored)) { 393 LastDiagLevel = Diagnostic::Ignored; 394 return; 395 } 396 397 if (DiagLevel >= Diagnostic::Error) { 398 ErrorOccurred = true; 399 ++NumErrors; 400 401 if (DiagLevel == Diagnostic::Fatal) 402 FatalErrorOccurred = true; 403 } 404 405 // Finally, report it. 406 Client->HandleDiagnostic(DiagLevel, Info); 407 if (Client->IncludeInDiagnosticCounts()) ++NumDiagnostics; 408 409 // Invoke any post-diagnostic hooks. 410 unsigned LastDiag = CurDiagID; 411 CurDiagID = ~0U; 412 413 InPostDiagnosticHook = true; 414 for (unsigned Hook = 0; Hook < NumPostDiagnosticHooks; ++Hook) 415 PostDiagnosticHooks[Hook].Hook(LastDiag, 416 PostDiagnosticHooks[Hook].Cookie); 417 InPostDiagnosticHook = false; 418} 419 420 421DiagnosticClient::~DiagnosticClient() {} 422 423 424/// ModifierIs - Return true if the specified modifier matches specified string. 425template <std::size_t StrLen> 426static bool ModifierIs(const char *Modifier, unsigned ModifierLen, 427 const char (&Str)[StrLen]) { 428 return StrLen-1 == ModifierLen && !memcmp(Modifier, Str, StrLen-1); 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(unsigned ValNo, 437 const char *Argument, unsigned ArgumentLen, 438 llvm::SmallVectorImpl<char> &OutStr) { 439 const char *ArgumentEnd = Argument+ArgumentLen; 440 441 // Skip over 'ValNo' |'s. 442 while (ValNo) { 443 const char *NextVal = std::find(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 = std::find(Argument, ArgumentEnd, '|'); 452 // Add the value to the output string. 453 OutStr.append(Argument, EndPtr); 454} 455 456/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the 457/// letter 's' to the string if the value is not 1. This is used in cases like 458/// this: "you idiot, you have %4 parameter%s4!". 459static void HandleIntegerSModifier(unsigned ValNo, 460 llvm::SmallVectorImpl<char> &OutStr) { 461 if (ValNo != 1) 462 OutStr.push_back('s'); 463} 464 465 466/// PluralNumber - Parse an unsigned integer and advance Start. 467static unsigned PluralNumber(const char *&Start, const char *End) 468{ 469 // Programming 101: Parse a decimal number :-) 470 unsigned Val = 0; 471 while (Start != End && *Start >= '0' && *Start <= '9') { 472 Val *= 10; 473 Val += *Start - '0'; 474 ++Start; 475 } 476 return Val; 477} 478 479/// TestPluralRange - Test if Val is in the parsed range. Modifies Start. 480static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) 481{ 482 if (*Start != '[') { 483 unsigned Ref = PluralNumber(Start, End); 484 return Ref == Val; 485 } 486 487 ++Start; 488 unsigned Low = PluralNumber(Start, End); 489 assert(*Start == ',' && "Bad plural expression syntax: expected ,"); 490 ++Start; 491 unsigned High = PluralNumber(Start, End); 492 assert(*Start == ']' && "Bad plural expression syntax: expected )"); 493 ++Start; 494 return Low <= Val && Val <= High; 495} 496 497/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier. 498static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) 499{ 500 // Empty condition? 501 if (*Start == ':') 502 return true; 503 504 while (1) { 505 char C = *Start; 506 if (C == '%') { 507 // Modulo expression 508 ++Start; 509 unsigned Arg = PluralNumber(Start, End); 510 assert(*Start == '=' && "Bad plural expression syntax: expected ="); 511 ++Start; 512 unsigned ValMod = ValNo % Arg; 513 if (TestPluralRange(ValMod, Start, End)) 514 return true; 515 } else { 516 assert((C == '[' || (C >= '0' && C <= '9')) && 517 "Bad plural expression syntax: unexpected character"); 518 // Range expression 519 if (TestPluralRange(ValNo, Start, End)) 520 return true; 521 } 522 523 // Scan for next or-expr part. 524 Start = std::find(Start, End, ','); 525 if(Start == End) 526 break; 527 ++Start; 528 } 529 return false; 530} 531 532/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used 533/// for complex plural forms, or in languages where all plurals are complex. 534/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are 535/// conditions that are tested in order, the form corresponding to the first 536/// that applies being emitted. The empty condition is always true, making the 537/// last form a default case. 538/// Conditions are simple boolean expressions, where n is the number argument. 539/// Here are the rules. 540/// condition := expression | empty 541/// empty := -> always true 542/// expression := numeric [',' expression] -> logical or 543/// numeric := range -> true if n in range 544/// | '%' number '=' range -> true if n % number in range 545/// range := number 546/// | '[' number ',' number ']' -> ranges are inclusive both ends 547/// 548/// Here are some examples from the GNU gettext manual written in this form: 549/// English: 550/// {1:form0|:form1} 551/// Latvian: 552/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0} 553/// Gaeilge: 554/// {1:form0|2:form1|:form2} 555/// Romanian: 556/// {1:form0|0,%100=[1,19]:form1|:form2} 557/// Lithuanian: 558/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1} 559/// Russian (requires repeated form): 560/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2} 561/// Slovak 562/// {1:form0|[2,4]:form1|:form2} 563/// Polish (requires repeated form): 564/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2} 565static void HandlePluralModifier(unsigned ValNo, 566 const char *Argument, unsigned ArgumentLen, 567 llvm::SmallVectorImpl<char> &OutStr) 568{ 569 const char *ArgumentEnd = Argument + ArgumentLen; 570 while (1) { 571 assert(Argument < ArgumentEnd && "Plural expression didn't match."); 572 const char *ExprEnd = Argument; 573 while (*ExprEnd != ':') { 574 assert(ExprEnd != ArgumentEnd && "Plural missing expression end"); 575 ++ExprEnd; 576 } 577 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) { 578 Argument = ExprEnd + 1; 579 ExprEnd = std::find(Argument, ArgumentEnd, '|'); 580 OutStr.append(Argument, ExprEnd); 581 return; 582 } 583 Argument = std::find(Argument, ArgumentEnd - 1, '|') + 1; 584 } 585} 586 587 588/// FormatDiagnostic - Format this diagnostic into a string, substituting the 589/// formal arguments into the %0 slots. The result is appended onto the Str 590/// array. 591void DiagnosticInfo:: 592FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const { 593 const char *DiagStr = getDiags()->getDescription(getID()); 594 const char *DiagEnd = DiagStr+strlen(DiagStr); 595 596 while (DiagStr != DiagEnd) { 597 if (DiagStr[0] != '%') { 598 // Append non-%0 substrings to Str if we have one. 599 const char *StrEnd = std::find(DiagStr, DiagEnd, '%'); 600 OutStr.append(DiagStr, StrEnd); 601 DiagStr = StrEnd; 602 continue; 603 } else if (DiagStr[1] == '%') { 604 OutStr.push_back('%'); // %% -> %. 605 DiagStr += 2; 606 continue; 607 } 608 609 // Skip the %. 610 ++DiagStr; 611 612 // This must be a placeholder for a diagnostic argument. The format for a 613 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0". 614 // The digit is a number from 0-9 indicating which argument this comes from. 615 // The modifier is a string of digits from the set [-a-z]+, arguments is a 616 // brace enclosed string. 617 const char *Modifier = 0, *Argument = 0; 618 unsigned ModifierLen = 0, ArgumentLen = 0; 619 620 // Check to see if we have a modifier. If so eat it. 621 if (!isdigit(DiagStr[0])) { 622 Modifier = DiagStr; 623 while (DiagStr[0] == '-' || 624 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z')) 625 ++DiagStr; 626 ModifierLen = DiagStr-Modifier; 627 628 // If we have an argument, get it next. 629 if (DiagStr[0] == '{') { 630 ++DiagStr; // Skip {. 631 Argument = DiagStr; 632 633 for (; DiagStr[0] != '}'; ++DiagStr) 634 assert(DiagStr[0] && "Mismatched {}'s in diagnostic string!"); 635 ArgumentLen = DiagStr-Argument; 636 ++DiagStr; // Skip }. 637 } 638 } 639 640 assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic"); 641 unsigned ArgNo = *DiagStr++ - '0'; 642 643 switch (getArgKind(ArgNo)) { 644 // ---- STRINGS ---- 645 case Diagnostic::ak_std_string: { 646 const std::string &S = getArgStdStr(ArgNo); 647 assert(ModifierLen == 0 && "No modifiers for strings yet"); 648 OutStr.append(S.begin(), S.end()); 649 break; 650 } 651 case Diagnostic::ak_c_string: { 652 const char *S = getArgCStr(ArgNo); 653 assert(ModifierLen == 0 && "No modifiers for strings yet"); 654 OutStr.append(S, S + strlen(S)); 655 break; 656 } 657 // ---- INTEGERS ---- 658 case Diagnostic::ak_sint: { 659 int Val = getArgSInt(ArgNo); 660 661 if (ModifierIs(Modifier, ModifierLen, "select")) { 662 HandleSelectModifier((unsigned)Val, Argument, ArgumentLen, OutStr); 663 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 664 HandleIntegerSModifier(Val, OutStr); 665 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 666 HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr); 667 } else { 668 assert(ModifierLen == 0 && "Unknown integer modifier"); 669 // FIXME: Optimize 670 std::string S = llvm::itostr(Val); 671 OutStr.append(S.begin(), S.end()); 672 } 673 break; 674 } 675 case Diagnostic::ak_uint: { 676 unsigned Val = getArgUInt(ArgNo); 677 678 if (ModifierIs(Modifier, ModifierLen, "select")) { 679 HandleSelectModifier(Val, Argument, ArgumentLen, OutStr); 680 } else if (ModifierIs(Modifier, ModifierLen, "s")) { 681 HandleIntegerSModifier(Val, OutStr); 682 } else if (ModifierIs(Modifier, ModifierLen, "plural")) { 683 HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr); 684 } else { 685 assert(ModifierLen == 0 && "Unknown integer modifier"); 686 687 // FIXME: Optimize 688 std::string S = llvm::utostr_32(Val); 689 OutStr.append(S.begin(), S.end()); 690 } 691 break; 692 } 693 // ---- NAMES and TYPES ---- 694 case Diagnostic::ak_identifierinfo: { 695 const IdentifierInfo *II = getArgIdentifier(ArgNo); 696 assert(ModifierLen == 0 && "No modifiers for strings yet"); 697 OutStr.push_back('\''); 698 OutStr.append(II->getName(), II->getName() + II->getLength()); 699 OutStr.push_back('\''); 700 break; 701 } 702 case Diagnostic::ak_qualtype: 703 case Diagnostic::ak_declarationname: 704 case Diagnostic::ak_nameddecl: 705 getDiags()->ConvertArgToString(getArgKind(ArgNo), getRawArg(ArgNo), 706 Modifier, ModifierLen, 707 Argument, ArgumentLen, OutStr); 708 break; 709 } 710 } 711} 712 713/// IncludeInDiagnosticCounts - This method (whose default implementation 714/// returns true) indicates whether the diagnostics handled by this 715/// DiagnosticClient should be included in the number of diagnostics 716/// reported by Diagnostic. 717bool DiagnosticClient::IncludeInDiagnosticCounts() const { return true; } 718