Diagnostic.cpp revision 78ad0b98848c17a0a11847fa1d456e2dfec8aa2f 
1//===--- Diagnostic.cpp - C Language Family Diagnostic Handling -----------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//  This file implements the Diagnostic-related interfaces.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/Basic/Diagnostic.h"
15#include "clang/Basic/IdentifierTable.h"
16#include "clang/Basic/PartialDiagnostic.h"
17#include "llvm/ADT/SmallVector.h"
18#include "llvm/Support/raw_ostream.h"
19#include "llvm/Support/CrashRecoveryContext.h"
20
21using namespace clang;
22
23static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT,
24                               const char *Modifier, unsigned ML,
25                               const char *Argument, unsigned ArgLen,
26                               const DiagnosticsEngine::ArgumentValue *PrevArgs,
27                               unsigned NumPrevArgs,
28                               SmallVectorImpl<char> &Output,
29                               void *Cookie,
30                               SmallVectorImpl<intptr_t> &QualTypeVals) {
31  const char *Str = "<can't format argument>";
32  Output.append(Str, Str+strlen(Str));
33}
34
35
36DiagnosticsEngine::DiagnosticsEngine(
37                       const llvm::IntrusiveRefCntPtr<DiagnosticIDs> &diags,
38                       DiagnosticConsumer *client, bool ShouldOwnClient)
39  : Diags(diags), Client(client), OwnsDiagClient(ShouldOwnClient),
40    SourceMgr(0) {
41  ArgToStringFn = DummyArgToStringFn;
42  ArgToStringCookie = 0;
43
44  AllExtensionsSilenced = 0;
45  IgnoreAllWarnings = false;
46  WarningsAsErrors = false;
47  EnableAllWarnings = false;
48  ErrorsAsFatal = false;
49  SuppressSystemWarnings = false;
50  SuppressAllDiagnostics = false;
51  ShowOverloads = Ovl_All;
52  ExtBehavior = Ext_Ignore;
53
54  ErrorLimit = 0;
55  TemplateBacktraceLimit = 0;
56
57  Reset();
58}
59
60DiagnosticsEngine::~DiagnosticsEngine() {
61  if (OwnsDiagClient)
62    delete Client;
63}
64
65void DiagnosticsEngine::setClient(DiagnosticConsumer *client,
66                                  bool ShouldOwnClient) {
67  if (OwnsDiagClient && Client)
68    delete Client;
69
70  Client = client;
71  OwnsDiagClient = ShouldOwnClient;
72}
73
74void DiagnosticsEngine::pushMappings(SourceLocation Loc) {
75  DiagStateOnPushStack.push_back(GetCurDiagState());
76}
77
78bool DiagnosticsEngine::popMappings(SourceLocation Loc) {
79  if (DiagStateOnPushStack.empty())
80    return false;
81
82  if (DiagStateOnPushStack.back() != GetCurDiagState()) {
83    // State changed at some point between push/pop.
84    PushDiagStatePoint(DiagStateOnPushStack.back(), Loc);
85  }
86  DiagStateOnPushStack.pop_back();
87  return true;
88}
89
90void DiagnosticsEngine::Reset() {
91  ErrorOccurred = false;
92  FatalErrorOccurred = false;
93  UnrecoverableErrorOccurred = false;
94
95  NumWarnings = 0;
96  NumErrors = 0;
97  NumErrorsSuppressed = 0;
98  TrapNumErrorsOccurred = 0;
99  TrapNumUnrecoverableErrorsOccurred = 0;
100
101  CurDiagID = ~0U;
102  // Set LastDiagLevel to an "unset" state. If we set it to 'Ignored', notes
103  // using a DiagnosticsEngine associated to a translation unit that follow
104  // diagnostics from a DiagnosticsEngine associated to anoter t.u. will not be
105  // displayed.
106  LastDiagLevel = (DiagnosticIDs::Level)-1;
107  DelayedDiagID = 0;
108
109  // Clear state related to #pragma diagnostic.
110  DiagStates.clear();
111  DiagStatePoints.clear();
112  DiagStateOnPushStack.clear();
113
114  // Create a DiagState and DiagStatePoint representing diagnostic changes
115  // through command-line.
116  DiagStates.push_back(DiagState());
117  PushDiagStatePoint(&DiagStates.back(), SourceLocation());
118}
119
120void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1,
121                                      StringRef Arg2) {
122  if (DelayedDiagID)
123    return;
124
125  DelayedDiagID = DiagID;
126  DelayedDiagArg1 = Arg1.str();
127  DelayedDiagArg2 = Arg2.str();
128}
129
130void DiagnosticsEngine::ReportDelayed() {
131  Report(DelayedDiagID) << DelayedDiagArg1 << DelayedDiagArg2;
132  DelayedDiagID = 0;
133  DelayedDiagArg1.clear();
134  DelayedDiagArg2.clear();
135}
136
137DiagnosticsEngine::DiagStatePointsTy::iterator
138DiagnosticsEngine::GetDiagStatePointForLoc(SourceLocation L) const {
139  assert(!DiagStatePoints.empty());
140  assert(DiagStatePoints.front().Loc.isInvalid() &&
141         "Should have created a DiagStatePoint for command-line");
142
143  FullSourceLoc Loc(L, *SourceMgr);
144  if (Loc.isInvalid())
145    return DiagStatePoints.end() - 1;
146
147  DiagStatePointsTy::iterator Pos = DiagStatePoints.end();
148  FullSourceLoc LastStateChangePos = DiagStatePoints.back().Loc;
149  if (LastStateChangePos.isValid() &&
150      Loc.isBeforeInTranslationUnitThan(LastStateChangePos))
151    Pos = std::upper_bound(DiagStatePoints.begin(), DiagStatePoints.end(),
152                           DiagStatePoint(0, Loc));
153  --Pos;
154  return Pos;
155}
156
157/// \brief This allows the client to specify that certain
158/// warnings are ignored.  Notes can never be mapped, errors can only be
159/// mapped to fatal, and WARNINGs and EXTENSIONs can be mapped arbitrarily.
160///
161/// \param The source location that this change of diagnostic state should
162/// take affect. It can be null if we are setting the latest state.
163void DiagnosticsEngine::setDiagnosticMapping(diag::kind Diag, diag::Mapping Map,
164                                      SourceLocation L) {
165  assert(Diag < diag::DIAG_UPPER_LIMIT &&
166         "Can only map builtin diagnostics");
167  assert((Diags->isBuiltinWarningOrExtension(Diag) ||
168          (Map == diag::MAP_FATAL || Map == diag::MAP_ERROR)) &&
169         "Cannot map errors into warnings!");
170  assert(!DiagStatePoints.empty());
171
172  bool isPragma = L.isValid();
173  FullSourceLoc Loc(L, *SourceMgr);
174  FullSourceLoc LastStateChangePos = DiagStatePoints.back().Loc;
175
176  // Common case; setting all the diagnostics of a group in one place.
177  if (Loc.isInvalid() || Loc == LastStateChangePos) {
178    setDiagnosticMappingInternal(Diag, Map, GetCurDiagState(), true, isPragma);
179    return;
180  }
181
182  // Another common case; modifying diagnostic state in a source location
183  // after the previous one.
184  if ((Loc.isValid() && LastStateChangePos.isInvalid()) ||
185      LastStateChangePos.isBeforeInTranslationUnitThan(Loc)) {
186    // A diagnostic pragma occurred, create a new DiagState initialized with
187    // the current one and a new DiagStatePoint to record at which location
188    // the new state became active.
189    DiagStates.push_back(*GetCurDiagState());
190    PushDiagStatePoint(&DiagStates.back(), Loc);
191    setDiagnosticMappingInternal(Diag, Map, GetCurDiagState(), true, isPragma);
192    return;
193  }
194
195  // We allow setting the diagnostic state in random source order for
196  // completeness but it should not be actually happening in normal practice.
197
198  DiagStatePointsTy::iterator Pos = GetDiagStatePointForLoc(Loc);
199  assert(Pos != DiagStatePoints.end());
200
201  // Update all diagnostic states that are active after the given location.
202  for (DiagStatePointsTy::iterator
203         I = Pos+1, E = DiagStatePoints.end(); I != E; ++I) {
204    setDiagnosticMappingInternal(Diag, Map, I->State, true, isPragma);
205  }
206
207  // If the location corresponds to an existing point, just update its state.
208  if (Pos->Loc == Loc) {
209    setDiagnosticMappingInternal(Diag, Map, Pos->State, true, isPragma);
210    return;
211  }
212
213  // Create a new state/point and fit it into the vector of DiagStatePoints
214  // so that the vector is always ordered according to location.
215  Pos->Loc.isBeforeInTranslationUnitThan(Loc);
216  DiagStates.push_back(*Pos->State);
217  DiagState *NewState = &DiagStates.back();
218  setDiagnosticMappingInternal(Diag, Map, NewState, true, isPragma);
219  DiagStatePoints.insert(Pos+1, DiagStatePoint(NewState,
220                                               FullSourceLoc(Loc, *SourceMgr)));
221}
222
223void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) {
224  assert(CurDiagID == ~0U && "Multiple diagnostics in flight at once!");
225
226  CurDiagLoc = storedDiag.getLocation();
227  CurDiagID = storedDiag.getID();
228  NumDiagArgs = 0;
229
230  NumDiagRanges = storedDiag.range_size();
231  assert(NumDiagRanges < sizeof(DiagRanges)/sizeof(DiagRanges[0]) &&
232         "Too many arguments to diagnostic!");
233  unsigned i = 0;
234  for (StoredDiagnostic::range_iterator
235         RI = storedDiag.range_begin(),
236         RE = storedDiag.range_end(); RI != RE; ++RI)
237    DiagRanges[i++] = *RI;
238
239  NumFixItHints = storedDiag.fixit_size();
240  assert(NumFixItHints < DiagnosticsEngine::MaxFixItHints &&
241      "Too many fix-it hints!");
242  i = 0;
243  for (StoredDiagnostic::fixit_iterator
244         FI = storedDiag.fixit_begin(),
245         FE = storedDiag.fixit_end(); FI != FE; ++FI)
246    FixItHints[i++] = *FI;
247
248  assert(Client && "DiagnosticConsumer not set!");
249  Level DiagLevel = storedDiag.getLevel();
250  DiagnosticInfo Info(this, storedDiag.getMessage());
251  Client->HandleDiagnostic(DiagLevel, Info);
252  if (Client->IncludeInDiagnosticCounts()) {
253    if (DiagLevel == DiagnosticsEngine::Warning)
254      ++NumWarnings;
255  }
256
257  CurDiagID = ~0U;
258}
259
260void DiagnosticBuilder::FlushCounts() {
261  DiagObj->NumDiagArgs = NumArgs;
262  DiagObj->NumDiagRanges = NumRanges;
263  DiagObj->NumFixItHints = NumFixItHints;
264}
265
266bool DiagnosticBuilder::Emit() {
267  // If DiagObj is null, then its soul was stolen by the copy ctor
268  // or the user called Emit().
269  if (DiagObj == 0) return false;
270
271  // When emitting diagnostics, we set the final argument count into
272  // the DiagnosticsEngine object.
273  FlushCounts();
274
275  // Process the diagnostic, sending the accumulated information to the
276  // DiagnosticConsumer.
277  bool Emitted = DiagObj->ProcessDiag();
278
279  // Clear out the current diagnostic object.
280  unsigned DiagID = DiagObj->CurDiagID;
281  DiagObj->Clear();
282
283  // If there was a delayed diagnostic, emit it now.
284  if (DiagObj->DelayedDiagID && DiagObj->DelayedDiagID != DiagID)
285    DiagObj->ReportDelayed();
286
287  // This diagnostic is dead.
288  DiagObj = 0;
289
290  return Emitted;
291}
292
293
294DiagnosticConsumer::~DiagnosticConsumer() {}
295
296void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
297                                        const DiagnosticInfo &Info) {
298  if (!IncludeInDiagnosticCounts())
299    return;
300
301  if (DiagLevel == DiagnosticsEngine::Warning)
302    ++NumWarnings;
303  else if (DiagLevel >= DiagnosticsEngine::Error)
304    ++NumErrors;
305}
306
307/// ModifierIs - Return true if the specified modifier matches specified string.
308template <std::size_t StrLen>
309static bool ModifierIs(const char *Modifier, unsigned ModifierLen,
310                       const char (&Str)[StrLen]) {
311  return StrLen-1 == ModifierLen && !memcmp(Modifier, Str, StrLen-1);
312}
313
314/// ScanForward - Scans forward, looking for the given character, skipping
315/// nested clauses and escaped characters.
316static const char *ScanFormat(const char *I, const char *E, char Target) {
317  unsigned Depth = 0;
318
319  for ( ; I != E; ++I) {
320    if (Depth == 0 && *I == Target) return I;
321    if (Depth != 0 && *I == '}') Depth--;
322
323    if (*I == '%') {
324      I++;
325      if (I == E) break;
326
327      // Escaped characters get implicitly skipped here.
328
329      // Format specifier.
330      if (!isdigit(*I) && !ispunct(*I)) {
331        for (I++; I != E && !isdigit(*I) && *I != '{'; I++) ;
332        if (I == E) break;
333        if (*I == '{')
334          Depth++;
335      }
336    }
337  }
338  return E;
339}
340
341/// HandleSelectModifier - Handle the integer 'select' modifier.  This is used
342/// like this:  %select{foo|bar|baz}2.  This means that the integer argument
343/// "%2" has a value from 0-2.  If the value is 0, the diagnostic prints 'foo'.
344/// If the value is 1, it prints 'bar'.  If it has the value 2, it prints 'baz'.
345/// This is very useful for certain classes of variant diagnostics.
346static void HandleSelectModifier(const DiagnosticInfo &DInfo, unsigned ValNo,
347                                 const char *Argument, unsigned ArgumentLen,
348                                 SmallVectorImpl<char> &OutStr) {
349  const char *ArgumentEnd = Argument+ArgumentLen;
350
351  // Skip over 'ValNo' |'s.
352  while (ValNo) {
353    const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|');
354    assert(NextVal != ArgumentEnd && "Value for integer select modifier was"
355           " larger than the number of options in the diagnostic string!");
356    Argument = NextVal+1;  // Skip this string.
357    --ValNo;
358  }
359
360  // Get the end of the value.  This is either the } or the |.
361  const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|');
362
363  // Recursively format the result of the select clause into the output string.
364  DInfo.FormatDiagnostic(Argument, EndPtr, OutStr);
365}
366
367/// HandleIntegerSModifier - Handle the integer 's' modifier.  This adds the
368/// letter 's' to the string if the value is not 1.  This is used in cases like
369/// this:  "you idiot, you have %4 parameter%s4!".
370static void HandleIntegerSModifier(unsigned ValNo,
371                                   SmallVectorImpl<char> &OutStr) {
372  if (ValNo != 1)
373    OutStr.push_back('s');
374}
375
376/// HandleOrdinalModifier - Handle the integer 'ord' modifier.  This
377/// prints the ordinal form of the given integer, with 1 corresponding
378/// to the first ordinal.  Currently this is hard-coded to use the
379/// English form.
380static void HandleOrdinalModifier(unsigned ValNo,
381                                  SmallVectorImpl<char> &OutStr) {
382  assert(ValNo != 0 && "ValNo must be strictly positive!");
383
384  llvm::raw_svector_ostream Out(OutStr);
385
386  // We could use text forms for the first N ordinals, but the numeric
387  // forms are actually nicer in diagnostics because they stand out.
388  Out << ValNo;
389
390  // It is critically important that we do this perfectly for
391  // user-written sequences with over 100 elements.
392  switch (ValNo % 100) {
393  case 11:
394  case 12:
395  case 13:
396    Out << "th"; return;
397  default:
398    switch (ValNo % 10) {
399    case 1: Out << "st"; return;
400    case 2: Out << "nd"; return;
401    case 3: Out << "rd"; return;
402    default: Out << "th"; return;
403    }
404  }
405}
406
407
408/// PluralNumber - Parse an unsigned integer and advance Start.
409static unsigned PluralNumber(const char *&Start, const char *End) {
410  // Programming 101: Parse a decimal number :-)
411  unsigned Val = 0;
412  while (Start != End && *Start >= '0' && *Start <= '9') {
413    Val *= 10;
414    Val += *Start - '0';
415    ++Start;
416  }
417  return Val;
418}
419
420/// TestPluralRange - Test if Val is in the parsed range. Modifies Start.
421static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) {
422  if (*Start != '[') {
423    unsigned Ref = PluralNumber(Start, End);
424    return Ref == Val;
425  }
426
427  ++Start;
428  unsigned Low = PluralNumber(Start, End);
429  assert(*Start == ',' && "Bad plural expression syntax: expected ,");
430  ++Start;
431  unsigned High = PluralNumber(Start, End);
432  assert(*Start == ']' && "Bad plural expression syntax: expected )");
433  ++Start;
434  return Low <= Val && Val <= High;
435}
436
437/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier.
438static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) {
439  // Empty condition?
440  if (*Start == ':')
441    return true;
442
443  while (1) {
444    char C = *Start;
445    if (C == '%') {
446      // Modulo expression
447      ++Start;
448      unsigned Arg = PluralNumber(Start, End);
449      assert(*Start == '=' && "Bad plural expression syntax: expected =");
450      ++Start;
451      unsigned ValMod = ValNo % Arg;
452      if (TestPluralRange(ValMod, Start, End))
453        return true;
454    } else {
455      assert((C == '[' || (C >= '0' && C <= '9')) &&
456             "Bad plural expression syntax: unexpected character");
457      // Range expression
458      if (TestPluralRange(ValNo, Start, End))
459        return true;
460    }
461
462    // Scan for next or-expr part.
463    Start = std::find(Start, End, ',');
464    if (Start == End)
465      break;
466    ++Start;
467  }
468  return false;
469}
470
471/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used
472/// for complex plural forms, or in languages where all plurals are complex.
473/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are
474/// conditions that are tested in order, the form corresponding to the first
475/// that applies being emitted. The empty condition is always true, making the
476/// last form a default case.
477/// Conditions are simple boolean expressions, where n is the number argument.
478/// Here are the rules.
479/// condition  := expression | empty
480/// empty      :=                             -> always true
481/// expression := numeric [',' expression]    -> logical or
482/// numeric    := range                       -> true if n in range
483///             | '%' number '=' range        -> true if n % number in range
484/// range      := number
485///             | '[' number ',' number ']'   -> ranges are inclusive both ends
486///
487/// Here are some examples from the GNU gettext manual written in this form:
488/// English:
489/// {1:form0|:form1}
490/// Latvian:
491/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0}
492/// Gaeilge:
493/// {1:form0|2:form1|:form2}
494/// Romanian:
495/// {1:form0|0,%100=[1,19]:form1|:form2}
496/// Lithuanian:
497/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1}
498/// Russian (requires repeated form):
499/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2}
500/// Slovak
501/// {1:form0|[2,4]:form1|:form2}
502/// Polish (requires repeated form):
503/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2}
504static void HandlePluralModifier(const DiagnosticInfo &DInfo, unsigned ValNo,
505                                 const char *Argument, unsigned ArgumentLen,
506                                 SmallVectorImpl<char> &OutStr) {
507  const char *ArgumentEnd = Argument + ArgumentLen;
508  while (1) {
509    assert(Argument < ArgumentEnd && "Plural expression didn't match.");
510    const char *ExprEnd = Argument;
511    while (*ExprEnd != ':') {
512      assert(ExprEnd != ArgumentEnd && "Plural missing expression end");
513      ++ExprEnd;
514    }
515    if (EvalPluralExpr(ValNo, Argument, ExprEnd)) {
516      Argument = ExprEnd + 1;
517      ExprEnd = ScanFormat(Argument, ArgumentEnd, '|');
518
519      // Recursively format the result of the plural clause into the
520      // output string.
521      DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr);
522      return;
523    }
524    Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1;
525  }
526}
527
528
529/// FormatDiagnostic - Format this diagnostic into a string, substituting the
530/// formal arguments into the %0 slots.  The result is appended onto the Str
531/// array.
532void DiagnosticInfo::
533FormatDiagnostic(SmallVectorImpl<char> &OutStr) const {
534  if (!StoredDiagMessage.empty()) {
535    OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end());
536    return;
537  }
538
539  StringRef Diag =
540    getDiags()->getDiagnosticIDs()->getDescription(getID());
541
542  FormatDiagnostic(Diag.begin(), Diag.end(), OutStr);
543}
544
545void DiagnosticInfo::
546FormatDiagnostic(const char *DiagStr, const char *DiagEnd,
547                 SmallVectorImpl<char> &OutStr) const {
548
549  /// FormattedArgs - Keep track of all of the arguments formatted by
550  /// ConvertArgToString and pass them into subsequent calls to
551  /// ConvertArgToString, allowing the implementation to avoid redundancies in
552  /// obvious cases.
553  SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs;
554
555  /// QualTypeVals - Pass a vector of arrays so that QualType names can be
556  /// compared to see if more information is needed to be printed.
557  SmallVector<intptr_t, 2> QualTypeVals;
558  for (unsigned i = 0, e = getNumArgs(); i < e; ++i)
559    if (getArgKind(i) == DiagnosticsEngine::ak_qualtype)
560      QualTypeVals.push_back(getRawArg(i));
561
562  while (DiagStr != DiagEnd) {
563    if (DiagStr[0] != '%') {
564      // Append non-%0 substrings to Str if we have one.
565      const char *StrEnd = std::find(DiagStr, DiagEnd, '%');
566      OutStr.append(DiagStr, StrEnd);
567      DiagStr = StrEnd;
568      continue;
569    } else if (ispunct(DiagStr[1])) {
570      OutStr.push_back(DiagStr[1]);  // %% -> %.
571      DiagStr += 2;
572      continue;
573    }
574
575    // Skip the %.
576    ++DiagStr;
577
578    // This must be a placeholder for a diagnostic argument.  The format for a
579    // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0".
580    // The digit is a number from 0-9 indicating which argument this comes from.
581    // The modifier is a string of digits from the set [-a-z]+, arguments is a
582    // brace enclosed string.
583    const char *Modifier = 0, *Argument = 0;
584    unsigned ModifierLen = 0, ArgumentLen = 0;
585
586    // Check to see if we have a modifier.  If so eat it.
587    if (!isdigit(DiagStr[0])) {
588      Modifier = DiagStr;
589      while (DiagStr[0] == '-' ||
590             (DiagStr[0] >= 'a' && DiagStr[0] <= 'z'))
591        ++DiagStr;
592      ModifierLen = DiagStr-Modifier;
593
594      // If we have an argument, get it next.
595      if (DiagStr[0] == '{') {
596        ++DiagStr; // Skip {.
597        Argument = DiagStr;
598
599        DiagStr = ScanFormat(DiagStr, DiagEnd, '}');
600        assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!");
601        ArgumentLen = DiagStr-Argument;
602        ++DiagStr;  // Skip }.
603      }
604    }
605
606    assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic");
607    unsigned ArgNo = *DiagStr++ - '0';
608
609    DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo);
610
611    switch (Kind) {
612    // ---- STRINGS ----
613    case DiagnosticsEngine::ak_std_string: {
614      const std::string &S = getArgStdStr(ArgNo);
615      assert(ModifierLen == 0 && "No modifiers for strings yet");
616      OutStr.append(S.begin(), S.end());
617      break;
618    }
619    case DiagnosticsEngine::ak_c_string: {
620      const char *S = getArgCStr(ArgNo);
621      assert(ModifierLen == 0 && "No modifiers for strings yet");
622
623      // Don't crash if get passed a null pointer by accident.
624      if (!S)
625        S = "(null)";
626
627      OutStr.append(S, S + strlen(S));
628      break;
629    }
630    // ---- INTEGERS ----
631    case DiagnosticsEngine::ak_sint: {
632      int Val = getArgSInt(ArgNo);
633
634      if (ModifierIs(Modifier, ModifierLen, "select")) {
635        HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen,
636                             OutStr);
637      } else if (ModifierIs(Modifier, ModifierLen, "s")) {
638        HandleIntegerSModifier(Val, OutStr);
639      } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
640        HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
641                             OutStr);
642      } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
643        HandleOrdinalModifier((unsigned)Val, OutStr);
644      } else {
645        assert(ModifierLen == 0 && "Unknown integer modifier");
646        llvm::raw_svector_ostream(OutStr) << Val;
647      }
648      break;
649    }
650    case DiagnosticsEngine::ak_uint: {
651      unsigned Val = getArgUInt(ArgNo);
652
653      if (ModifierIs(Modifier, ModifierLen, "select")) {
654        HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr);
655      } else if (ModifierIs(Modifier, ModifierLen, "s")) {
656        HandleIntegerSModifier(Val, OutStr);
657      } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
658        HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
659                             OutStr);
660      } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
661        HandleOrdinalModifier(Val, OutStr);
662      } else {
663        assert(ModifierLen == 0 && "Unknown integer modifier");
664        llvm::raw_svector_ostream(OutStr) << Val;
665      }
666      break;
667    }
668    // ---- NAMES and TYPES ----
669    case DiagnosticsEngine::ak_identifierinfo: {
670      const IdentifierInfo *II = getArgIdentifier(ArgNo);
671      assert(ModifierLen == 0 && "No modifiers for strings yet");
672
673      // Don't crash if get passed a null pointer by accident.
674      if (!II) {
675        const char *S = "(null)";
676        OutStr.append(S, S + strlen(S));
677        continue;
678      }
679
680      llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
681      break;
682    }
683    case DiagnosticsEngine::ak_qualtype:
684    case DiagnosticsEngine::ak_declarationname:
685    case DiagnosticsEngine::ak_nameddecl:
686    case DiagnosticsEngine::ak_nestednamespec:
687    case DiagnosticsEngine::ak_declcontext:
688      getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
689                                     Modifier, ModifierLen,
690                                     Argument, ArgumentLen,
691                                     FormattedArgs.data(), FormattedArgs.size(),
692                                     OutStr, QualTypeVals);
693      break;
694    }
695
696    // Remember this argument info for subsequent formatting operations.  Turn
697    // std::strings into a null terminated string to make it be the same case as
698    // all the other ones.
699    if (Kind != DiagnosticsEngine::ak_std_string)
700      FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
701    else
702      FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string,
703                                        (intptr_t)getArgStdStr(ArgNo).c_str()));
704
705  }
706}
707
708StoredDiagnostic::StoredDiagnostic() { }
709
710StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
711                                   StringRef Message)
712  : ID(ID), Level(Level), Loc(), Message(Message) { }
713
714StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level,
715                                   const DiagnosticInfo &Info)
716  : ID(Info.getID()), Level(Level)
717{
718  assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) &&
719       "Valid source location without setting a source manager for diagnostic");
720  if (Info.getLocation().isValid())
721    Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager());
722  llvm::SmallString<64> Message;
723  Info.FormatDiagnostic(Message);
724  this->Message.assign(Message.begin(), Message.end());
725
726  Ranges.reserve(Info.getNumRanges());
727  for (unsigned I = 0, N = Info.getNumRanges(); I != N; ++I)
728    Ranges.push_back(Info.getRange(I));
729
730  FixIts.reserve(Info.getNumFixItHints());
731  for (unsigned I = 0, N = Info.getNumFixItHints(); I != N; ++I)
732    FixIts.push_back(Info.getFixItHint(I));
733}
734
735StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
736                                   StringRef Message, FullSourceLoc Loc,
737                                   ArrayRef<CharSourceRange> Ranges,
738                                   ArrayRef<FixItHint> Fixits)
739  : ID(ID), Level(Level), Loc(Loc), Message(Message)
740{
741  this->Ranges.assign(Ranges.begin(), Ranges.end());
742  this->FixIts.assign(FixIts.begin(), FixIts.end());
743}
744
745StoredDiagnostic::~StoredDiagnostic() { }
746
747/// IncludeInDiagnosticCounts - This method (whose default implementation
748///  returns true) indicates whether the diagnostics handled by this
749///  DiagnosticConsumer should be included in the number of diagnostics
750///  reported by DiagnosticsEngine.
751bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; }
752
753PartialDiagnostic::StorageAllocator::StorageAllocator() {
754  for (unsigned I = 0; I != NumCached; ++I)
755    FreeList[I] = Cached + I;
756  NumFreeListEntries = NumCached;
757}
758
759PartialDiagnostic::StorageAllocator::~StorageAllocator() {
760  // Don't assert if we are in a CrashRecovery context, as this
761  // invariant may be invalidated during a crash.
762  assert((NumFreeListEntries == NumCached || llvm::CrashRecoveryContext::isRecoveringFromCrash()) && "A partial is on the lamb");
763}
764