lib/Basic/Diagnostic.cpp

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