1 //===--- Diagnostic.cpp - C Language Family Diagnostic Handling -----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Diagnostic-related interfaces.
12 //===----------------------------------------------------------------------===//
14 #include "clang/Basic/CharInfo.h"
15 #include "clang/Basic/Diagnostic.h"
16 #include "clang/Basic/DiagnosticOptions.h"
17 #include "clang/Basic/IdentifierTable.h"
18 #include "clang/Basic/PartialDiagnostic.h"
19 #include "llvm/ADT/SmallString.h"
20 #include "llvm/ADT/StringExtras.h"
21 #include "llvm/Support/CrashRecoveryContext.h"
22 #include "llvm/Support/Locale.h"
23 #include "llvm/Support/raw_ostream.h"
25 using namespace clang;
27 const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
28 DiagNullabilityKind nullability) {
30 switch (nullability.first) {
31 case NullabilityKind::NonNull:
32 string = nullability.second ? "'nonnull'" : "'_Nonnull'";
35 case NullabilityKind::Nullable:
36 string = nullability.second ? "'nullable'" : "'_Nullable'";
39 case NullabilityKind::Unspecified:
40 string = nullability.second ? "'null_unspecified'" : "'_Null_unspecified'";
48 static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT,
49 StringRef Modifier, StringRef Argument,
50 ArrayRef<DiagnosticsEngine::ArgumentValue> PrevArgs,
51 SmallVectorImpl<char> &Output,
53 ArrayRef<intptr_t> QualTypeVals) {
54 StringRef Str = "<can't format argument>";
55 Output.append(Str.begin(), Str.end());
58 DiagnosticsEngine::DiagnosticsEngine(
59 const IntrusiveRefCntPtr<DiagnosticIDs> &diags, DiagnosticOptions *DiagOpts,
60 DiagnosticConsumer *client, bool ShouldOwnClient)
61 : Diags(diags), DiagOpts(DiagOpts), Client(nullptr), SourceMgr(nullptr) {
62 setClient(client, ShouldOwnClient);
63 ArgToStringFn = DummyArgToStringFn;
64 ArgToStringCookie = nullptr;
66 AllExtensionsSilenced = 0;
67 IgnoreAllWarnings = false;
68 WarningsAsErrors = false;
69 EnableAllWarnings = false;
70 ErrorsAsFatal = false;
71 SuppressSystemWarnings = false;
72 SuppressAllDiagnostics = false;
74 PrintTemplateTree = false;
76 ShowOverloads = Ovl_All;
77 ExtBehavior = diag::Severity::Ignored;
80 TemplateBacktraceLimit = 0;
81 ConstexprBacktraceLimit = 0;
86 DiagnosticsEngine::~DiagnosticsEngine() {
87 // If we own the diagnostic client, destroy it first so that it can access the
88 // engine from its destructor.
92 void DiagnosticsEngine::setClient(DiagnosticConsumer *client,
93 bool ShouldOwnClient) {
94 Owner.reset(ShouldOwnClient ? client : nullptr);
98 void DiagnosticsEngine::pushMappings(SourceLocation Loc) {
99 DiagStateOnPushStack.push_back(GetCurDiagState());
102 bool DiagnosticsEngine::popMappings(SourceLocation Loc) {
103 if (DiagStateOnPushStack.empty())
106 if (DiagStateOnPushStack.back() != GetCurDiagState()) {
107 // State changed at some point between push/pop.
108 PushDiagStatePoint(DiagStateOnPushStack.back(), Loc);
110 DiagStateOnPushStack.pop_back();
114 void DiagnosticsEngine::Reset() {
115 ErrorOccurred = false;
116 UncompilableErrorOccurred = false;
117 FatalErrorOccurred = false;
118 UnrecoverableErrorOccurred = false;
122 TrapNumErrorsOccurred = 0;
123 TrapNumUnrecoverableErrorsOccurred = 0;
126 LastDiagLevel = DiagnosticIDs::Ignored;
129 // Clear state related to #pragma diagnostic.
131 DiagStatePoints.clear();
132 DiagStateOnPushStack.clear();
134 // Create a DiagState and DiagStatePoint representing diagnostic changes
135 // through command-line.
136 DiagStates.emplace_back();
137 DiagStatePoints.push_back(DiagStatePoint(&DiagStates.back(), FullSourceLoc()));
140 void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1,
145 DelayedDiagID = DiagID;
146 DelayedDiagArg1 = Arg1.str();
147 DelayedDiagArg2 = Arg2.str();
150 void DiagnosticsEngine::ReportDelayed() {
151 Report(DelayedDiagID) << DelayedDiagArg1 << DelayedDiagArg2;
153 DelayedDiagArg1.clear();
154 DelayedDiagArg2.clear();
157 DiagnosticsEngine::DiagStatePointsTy::iterator
158 DiagnosticsEngine::GetDiagStatePointForLoc(SourceLocation L) const {
159 assert(!DiagStatePoints.empty());
160 assert(DiagStatePoints.front().Loc.isInvalid() &&
161 "Should have created a DiagStatePoint for command-line");
164 return DiagStatePoints.end() - 1;
166 FullSourceLoc Loc(L, *SourceMgr);
168 return DiagStatePoints.end() - 1;
170 DiagStatePointsTy::iterator Pos = DiagStatePoints.end();
171 FullSourceLoc LastStateChangePos = DiagStatePoints.back().Loc;
172 if (LastStateChangePos.isValid() &&
173 Loc.isBeforeInTranslationUnitThan(LastStateChangePos))
174 Pos = std::upper_bound(DiagStatePoints.begin(), DiagStatePoints.end(),
175 DiagStatePoint(nullptr, Loc));
180 void DiagnosticsEngine::setSeverity(diag::kind Diag, diag::Severity Map,
182 assert(Diag < diag::DIAG_UPPER_LIMIT &&
183 "Can only map builtin diagnostics");
184 assert((Diags->isBuiltinWarningOrExtension(Diag) ||
185 (Map == diag::Severity::Fatal || Map == diag::Severity::Error)) &&
186 "Cannot map errors into warnings!");
187 assert(!DiagStatePoints.empty());
188 assert((L.isInvalid() || SourceMgr) && "No SourceMgr for valid location");
190 FullSourceLoc Loc = SourceMgr? FullSourceLoc(L, *SourceMgr) : FullSourceLoc();
191 FullSourceLoc LastStateChangePos = DiagStatePoints.back().Loc;
192 // Don't allow a mapping to a warning override an error/fatal mapping.
193 if (Map == diag::Severity::Warning) {
194 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
195 if (Info.getSeverity() == diag::Severity::Error ||
196 Info.getSeverity() == diag::Severity::Fatal)
197 Map = Info.getSeverity();
199 DiagnosticMapping Mapping = makeUserMapping(Map, L);
201 // Common case; setting all the diagnostics of a group in one place.
202 if (Loc.isInvalid() || Loc == LastStateChangePos) {
203 GetCurDiagState()->setMapping(Diag, Mapping);
207 // Another common case; modifying diagnostic state in a source location
208 // after the previous one.
209 if ((Loc.isValid() && LastStateChangePos.isInvalid()) ||
210 LastStateChangePos.isBeforeInTranslationUnitThan(Loc)) {
211 // A diagnostic pragma occurred, create a new DiagState initialized with
212 // the current one and a new DiagStatePoint to record at which location
213 // the new state became active.
214 DiagStates.push_back(*GetCurDiagState());
215 PushDiagStatePoint(&DiagStates.back(), Loc);
216 GetCurDiagState()->setMapping(Diag, Mapping);
220 // We allow setting the diagnostic state in random source order for
221 // completeness but it should not be actually happening in normal practice.
223 DiagStatePointsTy::iterator Pos = GetDiagStatePointForLoc(Loc);
224 assert(Pos != DiagStatePoints.end());
226 // Update all diagnostic states that are active after the given location.
227 for (DiagStatePointsTy::iterator
228 I = Pos+1, E = DiagStatePoints.end(); I != E; ++I) {
229 I->State->setMapping(Diag, Mapping);
232 // If the location corresponds to an existing point, just update its state.
233 if (Pos->Loc == Loc) {
234 Pos->State->setMapping(Diag, Mapping);
238 // Create a new state/point and fit it into the vector of DiagStatePoints
239 // so that the vector is always ordered according to location.
240 assert(Pos->Loc.isBeforeInTranslationUnitThan(Loc));
241 DiagStates.push_back(*Pos->State);
242 DiagState *NewState = &DiagStates.back();
243 NewState->setMapping(Diag, Mapping);
244 DiagStatePoints.insert(Pos+1, DiagStatePoint(NewState,
245 FullSourceLoc(Loc, *SourceMgr)));
248 bool DiagnosticsEngine::setSeverityForGroup(diag::Flavor Flavor,
249 StringRef Group, diag::Severity Map,
250 SourceLocation Loc) {
251 // Get the diagnostics in this group.
252 SmallVector<diag::kind, 256> GroupDiags;
253 if (Diags->getDiagnosticsInGroup(Flavor, Group, GroupDiags))
257 for (diag::kind Diag : GroupDiags)
258 setSeverity(Diag, Map, Loc);
263 bool DiagnosticsEngine::setDiagnosticGroupWarningAsError(StringRef Group,
265 // If we are enabling this feature, just set the diagnostic mappings to map to
268 return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
269 diag::Severity::Error);
271 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and
272 // potentially downgrade anything already mapped to be a warning.
274 // Get the diagnostics in this group.
275 SmallVector<diag::kind, 8> GroupDiags;
276 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
280 // Perform the mapping change.
281 for (diag::kind Diag : GroupDiags) {
282 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
284 if (Info.getSeverity() == diag::Severity::Error ||
285 Info.getSeverity() == diag::Severity::Fatal)
286 Info.setSeverity(diag::Severity::Warning);
288 Info.setNoWarningAsError(true);
294 bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group,
296 // If we are enabling this feature, just set the diagnostic mappings to map to
299 return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
300 diag::Severity::Fatal);
302 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and
303 // potentially downgrade anything already mapped to be an error.
305 // Get the diagnostics in this group.
306 SmallVector<diag::kind, 8> GroupDiags;
307 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
311 // Perform the mapping change.
312 for (diag::kind Diag : GroupDiags) {
313 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
315 if (Info.getSeverity() == diag::Severity::Fatal)
316 Info.setSeverity(diag::Severity::Error);
318 Info.setNoErrorAsFatal(true);
324 void DiagnosticsEngine::setSeverityForAll(diag::Flavor Flavor,
326 SourceLocation Loc) {
327 // Get all the diagnostics.
328 SmallVector<diag::kind, 64> AllDiags;
329 Diags->getAllDiagnostics(Flavor, AllDiags);
332 for (diag::kind Diag : AllDiags)
333 if (Diags->isBuiltinWarningOrExtension(Diag))
334 setSeverity(Diag, Map, Loc);
337 void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) {
338 assert(CurDiagID == ~0U && "Multiple diagnostics in flight at once!");
340 CurDiagLoc = storedDiag.getLocation();
341 CurDiagID = storedDiag.getID();
345 DiagRanges.append(storedDiag.range_begin(), storedDiag.range_end());
347 DiagFixItHints.clear();
348 DiagFixItHints.append(storedDiag.fixit_begin(), storedDiag.fixit_end());
350 assert(Client && "DiagnosticConsumer not set!");
351 Level DiagLevel = storedDiag.getLevel();
352 Diagnostic Info(this, storedDiag.getMessage());
353 Client->HandleDiagnostic(DiagLevel, Info);
354 if (Client->IncludeInDiagnosticCounts()) {
355 if (DiagLevel == DiagnosticsEngine::Warning)
362 bool DiagnosticsEngine::EmitCurrentDiagnostic(bool Force) {
363 assert(getClient() && "DiagnosticClient not set!");
367 Diagnostic Info(this);
369 // Figure out the diagnostic level of this message.
370 DiagnosticIDs::Level DiagLevel
371 = Diags->getDiagnosticLevel(Info.getID(), Info.getLocation(), *this);
373 Emitted = (DiagLevel != DiagnosticIDs::Ignored);
375 // Emit the diagnostic regardless of suppression level.
376 Diags->EmitDiag(*this, DiagLevel);
379 // Process the diagnostic, sending the accumulated information to the
380 // DiagnosticConsumer.
381 Emitted = ProcessDiag();
384 // Clear out the current diagnostic object.
385 unsigned DiagID = CurDiagID;
388 // If there was a delayed diagnostic, emit it now.
389 if (!Force && DelayedDiagID && DelayedDiagID != DiagID)
396 DiagnosticConsumer::~DiagnosticConsumer() {}
398 void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
399 const Diagnostic &Info) {
400 if (!IncludeInDiagnosticCounts())
403 if (DiagLevel == DiagnosticsEngine::Warning)
405 else if (DiagLevel >= DiagnosticsEngine::Error)
409 /// ModifierIs - Return true if the specified modifier matches specified string.
410 template <std::size_t StrLen>
411 static bool ModifierIs(const char *Modifier, unsigned ModifierLen,
412 const char (&Str)[StrLen]) {
413 return StrLen-1 == ModifierLen && !memcmp(Modifier, Str, StrLen-1);
416 /// ScanForward - Scans forward, looking for the given character, skipping
417 /// nested clauses and escaped characters.
418 static const char *ScanFormat(const char *I, const char *E, char Target) {
421 for ( ; I != E; ++I) {
422 if (Depth == 0 && *I == Target) return I;
423 if (Depth != 0 && *I == '}') Depth--;
429 // Escaped characters get implicitly skipped here.
432 if (!isDigit(*I) && !isPunctuation(*I)) {
433 for (I++; I != E && !isDigit(*I) && *I != '{'; I++) ;
443 /// HandleSelectModifier - Handle the integer 'select' modifier. This is used
444 /// like this: %select{foo|bar|baz}2. This means that the integer argument
445 /// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'.
446 /// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'.
447 /// This is very useful for certain classes of variant diagnostics.
448 static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo,
449 const char *Argument, unsigned ArgumentLen,
450 SmallVectorImpl<char> &OutStr) {
451 const char *ArgumentEnd = Argument+ArgumentLen;
453 // Skip over 'ValNo' |'s.
455 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|');
456 assert(NextVal != ArgumentEnd && "Value for integer select modifier was"
457 " larger than the number of options in the diagnostic string!");
458 Argument = NextVal+1; // Skip this string.
462 // Get the end of the value. This is either the } or the |.
463 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|');
465 // Recursively format the result of the select clause into the output string.
466 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr);
469 /// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the
470 /// letter 's' to the string if the value is not 1. This is used in cases like
471 /// this: "you idiot, you have %4 parameter%s4!".
472 static void HandleIntegerSModifier(unsigned ValNo,
473 SmallVectorImpl<char> &OutStr) {
475 OutStr.push_back('s');
478 /// HandleOrdinalModifier - Handle the integer 'ord' modifier. This
479 /// prints the ordinal form of the given integer, with 1 corresponding
480 /// to the first ordinal. Currently this is hard-coded to use the
482 static void HandleOrdinalModifier(unsigned ValNo,
483 SmallVectorImpl<char> &OutStr) {
484 assert(ValNo != 0 && "ValNo must be strictly positive!");
486 llvm::raw_svector_ostream Out(OutStr);
488 // We could use text forms for the first N ordinals, but the numeric
489 // forms are actually nicer in diagnostics because they stand out.
490 Out << ValNo << llvm::getOrdinalSuffix(ValNo);
494 /// PluralNumber - Parse an unsigned integer and advance Start.
495 static unsigned PluralNumber(const char *&Start, const char *End) {
496 // Programming 101: Parse a decimal number :-)
498 while (Start != End && *Start >= '0' && *Start <= '9') {
506 /// TestPluralRange - Test if Val is in the parsed range. Modifies Start.
507 static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) {
509 unsigned Ref = PluralNumber(Start, End);
514 unsigned Low = PluralNumber(Start, End);
515 assert(*Start == ',' && "Bad plural expression syntax: expected ,");
517 unsigned High = PluralNumber(Start, End);
518 assert(*Start == ']' && "Bad plural expression syntax: expected )");
520 return Low <= Val && Val <= High;
523 /// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier.
524 static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) {
534 unsigned Arg = PluralNumber(Start, End);
535 assert(*Start == '=' && "Bad plural expression syntax: expected =");
537 unsigned ValMod = ValNo % Arg;
538 if (TestPluralRange(ValMod, Start, End))
541 assert((C == '[' || (C >= '0' && C <= '9')) &&
542 "Bad plural expression syntax: unexpected character");
544 if (TestPluralRange(ValNo, Start, End))
548 // Scan for next or-expr part.
549 Start = std::find(Start, End, ',');
557 /// HandlePluralModifier - Handle the integer 'plural' modifier. This is used
558 /// for complex plural forms, or in languages where all plurals are complex.
559 /// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are
560 /// conditions that are tested in order, the form corresponding to the first
561 /// that applies being emitted. The empty condition is always true, making the
562 /// last form a default case.
563 /// Conditions are simple boolean expressions, where n is the number argument.
564 /// Here are the rules.
565 /// condition := expression | empty
566 /// empty := -> always true
567 /// expression := numeric [',' expression] -> logical or
568 /// numeric := range -> true if n in range
569 /// | '%' number '=' range -> true if n % number in range
571 /// | '[' number ',' number ']' -> ranges are inclusive both ends
573 /// Here are some examples from the GNU gettext manual written in this form:
577 /// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0}
579 /// {1:form0|2:form1|:form2}
581 /// {1:form0|0,%100=[1,19]:form1|:form2}
583 /// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1}
584 /// Russian (requires repeated form):
585 /// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2}
587 /// {1:form0|[2,4]:form1|:form2}
588 /// Polish (requires repeated form):
589 /// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2}
590 static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo,
591 const char *Argument, unsigned ArgumentLen,
592 SmallVectorImpl<char> &OutStr) {
593 const char *ArgumentEnd = Argument + ArgumentLen;
595 assert(Argument < ArgumentEnd && "Plural expression didn't match.");
596 const char *ExprEnd = Argument;
597 while (*ExprEnd != ':') {
598 assert(ExprEnd != ArgumentEnd && "Plural missing expression end");
601 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) {
602 Argument = ExprEnd + 1;
603 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|');
605 // Recursively format the result of the plural clause into the
607 DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr);
610 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1;
614 /// \brief Returns the friendly description for a token kind that will appear
615 /// without quotes in diagnostic messages. These strings may be translatable in
617 static const char *getTokenDescForDiagnostic(tok::TokenKind Kind) {
619 case tok::identifier:
626 /// FormatDiagnostic - Format this diagnostic into a string, substituting the
627 /// formal arguments into the %0 slots. The result is appended onto the Str
630 FormatDiagnostic(SmallVectorImpl<char> &OutStr) const {
631 if (!StoredDiagMessage.empty()) {
632 OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end());
637 getDiags()->getDiagnosticIDs()->getDescription(getID());
639 FormatDiagnostic(Diag.begin(), Diag.end(), OutStr);
643 FormatDiagnostic(const char *DiagStr, const char *DiagEnd,
644 SmallVectorImpl<char> &OutStr) const {
646 // When the diagnostic string is only "%0", the entire string is being given
647 // by an outside source. Remove unprintable characters from this string
648 // and skip all the other string processing.
649 if (DiagEnd - DiagStr == 2 &&
650 StringRef(DiagStr, DiagEnd - DiagStr).equals("%0") &&
651 getArgKind(0) == DiagnosticsEngine::ak_std_string) {
652 const std::string &S = getArgStdStr(0);
654 if (llvm::sys::locale::isPrint(c) || c == '\t') {
661 /// FormattedArgs - Keep track of all of the arguments formatted by
662 /// ConvertArgToString and pass them into subsequent calls to
663 /// ConvertArgToString, allowing the implementation to avoid redundancies in
665 SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs;
667 /// QualTypeVals - Pass a vector of arrays so that QualType names can be
668 /// compared to see if more information is needed to be printed.
669 SmallVector<intptr_t, 2> QualTypeVals;
670 SmallVector<char, 64> Tree;
672 for (unsigned i = 0, e = getNumArgs(); i < e; ++i)
673 if (getArgKind(i) == DiagnosticsEngine::ak_qualtype)
674 QualTypeVals.push_back(getRawArg(i));
676 while (DiagStr != DiagEnd) {
677 if (DiagStr[0] != '%') {
678 // Append non-%0 substrings to Str if we have one.
679 const char *StrEnd = std::find(DiagStr, DiagEnd, '%');
680 OutStr.append(DiagStr, StrEnd);
683 } else if (isPunctuation(DiagStr[1])) {
684 OutStr.push_back(DiagStr[1]); // %% -> %.
692 // This must be a placeholder for a diagnostic argument. The format for a
693 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0".
694 // The digit is a number from 0-9 indicating which argument this comes from.
695 // The modifier is a string of digits from the set [-a-z]+, arguments is a
696 // brace enclosed string.
697 const char *Modifier = nullptr, *Argument = nullptr;
698 unsigned ModifierLen = 0, ArgumentLen = 0;
700 // Check to see if we have a modifier. If so eat it.
701 if (!isDigit(DiagStr[0])) {
703 while (DiagStr[0] == '-' ||
704 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z'))
706 ModifierLen = DiagStr-Modifier;
708 // If we have an argument, get it next.
709 if (DiagStr[0] == '{') {
710 ++DiagStr; // Skip {.
713 DiagStr = ScanFormat(DiagStr, DiagEnd, '}');
714 assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!");
715 ArgumentLen = DiagStr-Argument;
716 ++DiagStr; // Skip }.
720 assert(isDigit(*DiagStr) && "Invalid format for argument in diagnostic");
721 unsigned ArgNo = *DiagStr++ - '0';
723 // Only used for type diffing.
724 unsigned ArgNo2 = ArgNo;
726 DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo);
727 if (ModifierIs(Modifier, ModifierLen, "diff")) {
728 assert(*DiagStr == ',' && isDigit(*(DiagStr + 1)) &&
729 "Invalid format for diff modifier");
731 ArgNo2 = *DiagStr++ - '0';
732 DiagnosticsEngine::ArgumentKind Kind2 = getArgKind(ArgNo2);
733 if (Kind == DiagnosticsEngine::ak_qualtype &&
734 Kind2 == DiagnosticsEngine::ak_qualtype)
735 Kind = DiagnosticsEngine::ak_qualtype_pair;
737 // %diff only supports QualTypes. For other kinds of arguments,
738 // use the default printing. For example, if the modifier is:
739 // "%diff{compare $ to $|other text}1,2"
741 // "compare %1 to %2"
742 const char *Pipe = ScanFormat(Argument, Argument + ArgumentLen, '|');
743 const char *FirstDollar = ScanFormat(Argument, Pipe, '$');
744 const char *SecondDollar = ScanFormat(FirstDollar + 1, Pipe, '$');
745 const char ArgStr1[] = { '%', static_cast<char>('0' + ArgNo) };
746 const char ArgStr2[] = { '%', static_cast<char>('0' + ArgNo2) };
747 FormatDiagnostic(Argument, FirstDollar, OutStr);
748 FormatDiagnostic(ArgStr1, ArgStr1 + 2, OutStr);
749 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
750 FormatDiagnostic(ArgStr2, ArgStr2 + 2, OutStr);
751 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
758 case DiagnosticsEngine::ak_std_string: {
759 const std::string &S = getArgStdStr(ArgNo);
760 assert(ModifierLen == 0 && "No modifiers for strings yet");
761 OutStr.append(S.begin(), S.end());
764 case DiagnosticsEngine::ak_c_string: {
765 const char *S = getArgCStr(ArgNo);
766 assert(ModifierLen == 0 && "No modifiers for strings yet");
768 // Don't crash if get passed a null pointer by accident.
772 OutStr.append(S, S + strlen(S));
775 // ---- INTEGERS ----
776 case DiagnosticsEngine::ak_sint: {
777 int Val = getArgSInt(ArgNo);
779 if (ModifierIs(Modifier, ModifierLen, "select")) {
780 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen,
782 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
783 HandleIntegerSModifier(Val, OutStr);
784 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
785 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
787 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
788 HandleOrdinalModifier((unsigned)Val, OutStr);
790 assert(ModifierLen == 0 && "Unknown integer modifier");
791 llvm::raw_svector_ostream(OutStr) << Val;
795 case DiagnosticsEngine::ak_uint: {
796 unsigned Val = getArgUInt(ArgNo);
798 if (ModifierIs(Modifier, ModifierLen, "select")) {
799 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr);
800 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
801 HandleIntegerSModifier(Val, OutStr);
802 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
803 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
805 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
806 HandleOrdinalModifier(Val, OutStr);
808 assert(ModifierLen == 0 && "Unknown integer modifier");
809 llvm::raw_svector_ostream(OutStr) << Val;
813 // ---- TOKEN SPELLINGS ----
814 case DiagnosticsEngine::ak_tokenkind: {
815 tok::TokenKind Kind = static_cast<tok::TokenKind>(getRawArg(ArgNo));
816 assert(ModifierLen == 0 && "No modifiers for token kinds yet");
818 llvm::raw_svector_ostream Out(OutStr);
819 if (const char *S = tok::getPunctuatorSpelling(Kind))
820 // Quoted token spelling for punctuators.
821 Out << '\'' << S << '\'';
822 else if (const char *S = tok::getKeywordSpelling(Kind))
823 // Unquoted token spelling for keywords.
825 else if (const char *S = getTokenDescForDiagnostic(Kind))
826 // Unquoted translatable token name.
828 else if (const char *S = tok::getTokenName(Kind))
829 // Debug name, shouldn't appear in user-facing diagnostics.
830 Out << '<' << S << '>';
835 // ---- NAMES and TYPES ----
836 case DiagnosticsEngine::ak_identifierinfo: {
837 const IdentifierInfo *II = getArgIdentifier(ArgNo);
838 assert(ModifierLen == 0 && "No modifiers for strings yet");
840 // Don't crash if get passed a null pointer by accident.
842 const char *S = "(null)";
843 OutStr.append(S, S + strlen(S));
847 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
850 case DiagnosticsEngine::ak_qualtype:
851 case DiagnosticsEngine::ak_declarationname:
852 case DiagnosticsEngine::ak_nameddecl:
853 case DiagnosticsEngine::ak_nestednamespec:
854 case DiagnosticsEngine::ak_declcontext:
855 case DiagnosticsEngine::ak_attr:
856 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
857 StringRef(Modifier, ModifierLen),
858 StringRef(Argument, ArgumentLen),
860 OutStr, QualTypeVals);
862 case DiagnosticsEngine::ak_qualtype_pair:
863 // Create a struct with all the info needed for printing.
864 TemplateDiffTypes TDT;
865 TDT.FromType = getRawArg(ArgNo);
866 TDT.ToType = getRawArg(ArgNo2);
867 TDT.ElideType = getDiags()->ElideType;
868 TDT.ShowColors = getDiags()->ShowColors;
869 TDT.TemplateDiffUsed = false;
870 intptr_t val = reinterpret_cast<intptr_t>(&TDT);
872 const char *ArgumentEnd = Argument + ArgumentLen;
873 const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
875 // Print the tree. If this diagnostic already has a tree, skip the
877 if (getDiags()->PrintTemplateTree && Tree.empty()) {
878 TDT.PrintFromType = true;
879 TDT.PrintTree = true;
880 getDiags()->ConvertArgToString(Kind, val,
881 StringRef(Modifier, ModifierLen),
882 StringRef(Argument, ArgumentLen),
885 // If there is no tree information, fall back to regular printing.
887 FormatDiagnostic(Pipe + 1, ArgumentEnd, OutStr);
892 // Non-tree printing, also the fall-back when tree printing fails.
893 // The fall-back is triggered when the types compared are not templates.
894 const char *FirstDollar = ScanFormat(Argument, ArgumentEnd, '$');
895 const char *SecondDollar = ScanFormat(FirstDollar + 1, ArgumentEnd, '$');
897 // Append before text
898 FormatDiagnostic(Argument, FirstDollar, OutStr);
901 TDT.PrintTree = false;
902 TDT.PrintFromType = true;
903 getDiags()->ConvertArgToString(Kind, val,
904 StringRef(Modifier, ModifierLen),
905 StringRef(Argument, ArgumentLen),
907 OutStr, QualTypeVals);
908 if (!TDT.TemplateDiffUsed)
909 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
912 // Append middle text
913 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
915 // Append second type
916 TDT.PrintFromType = false;
917 getDiags()->ConvertArgToString(Kind, val,
918 StringRef(Modifier, ModifierLen),
919 StringRef(Argument, ArgumentLen),
921 OutStr, QualTypeVals);
922 if (!TDT.TemplateDiffUsed)
923 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
927 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
931 // Remember this argument info for subsequent formatting operations. Turn
932 // std::strings into a null terminated string to make it be the same case as
933 // all the other ones.
934 if (Kind == DiagnosticsEngine::ak_qualtype_pair)
936 else if (Kind != DiagnosticsEngine::ak_std_string)
937 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
939 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string,
940 (intptr_t)getArgStdStr(ArgNo).c_str()));
944 // Append the type tree to the end of the diagnostics.
945 OutStr.append(Tree.begin(), Tree.end());
948 StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
950 : ID(ID), Level(Level), Loc(), Message(Message) { }
952 StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level,
953 const Diagnostic &Info)
954 : ID(Info.getID()), Level(Level)
956 assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) &&
957 "Valid source location without setting a source manager for diagnostic");
958 if (Info.getLocation().isValid())
959 Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager());
960 SmallString<64> Message;
961 Info.FormatDiagnostic(Message);
962 this->Message.assign(Message.begin(), Message.end());
963 this->Ranges.assign(Info.getRanges().begin(), Info.getRanges().end());
964 this->FixIts.assign(Info.getFixItHints().begin(), Info.getFixItHints().end());
967 StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
968 StringRef Message, FullSourceLoc Loc,
969 ArrayRef<CharSourceRange> Ranges,
970 ArrayRef<FixItHint> FixIts)
971 : ID(ID), Level(Level), Loc(Loc), Message(Message),
972 Ranges(Ranges.begin(), Ranges.end()), FixIts(FixIts.begin(), FixIts.end())
976 /// IncludeInDiagnosticCounts - This method (whose default implementation
977 /// returns true) indicates whether the diagnostics handled by this
978 /// DiagnosticConsumer should be included in the number of diagnostics
979 /// reported by DiagnosticsEngine.
980 bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; }
982 void IgnoringDiagConsumer::anchor() { }
984 ForwardingDiagnosticConsumer::~ForwardingDiagnosticConsumer() {}
986 void ForwardingDiagnosticConsumer::HandleDiagnostic(
987 DiagnosticsEngine::Level DiagLevel,
988 const Diagnostic &Info) {
989 Target.HandleDiagnostic(DiagLevel, Info);
992 void ForwardingDiagnosticConsumer::clear() {
993 DiagnosticConsumer::clear();
997 bool ForwardingDiagnosticConsumer::IncludeInDiagnosticCounts() const {
998 return Target.IncludeInDiagnosticCounts();
1001 PartialDiagnostic::StorageAllocator::StorageAllocator() {
1002 for (unsigned I = 0; I != NumCached; ++I)
1003 FreeList[I] = Cached + I;
1004 NumFreeListEntries = NumCached;
1007 PartialDiagnostic::StorageAllocator::~StorageAllocator() {
1008 // Don't assert if we are in a CrashRecovery context, as this invariant may
1009 // be invalidated during a crash.
1010 assert((NumFreeListEntries == NumCached ||
1011 llvm::CrashRecoveryContext::isRecoveringFromCrash()) &&
1012 "A partial is on the lamb");