clang 19.0.0git
Diagnostic.cpp
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1//===- Diagnostic.cpp - C Language Family Diagnostic Handling -------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the Diagnostic-related interfaces.
10//
11//===----------------------------------------------------------------------===//
12
24#include "llvm/ADT/SmallString.h"
25#include "llvm/ADT/SmallVector.h"
26#include "llvm/ADT/StringExtras.h"
27#include "llvm/ADT/StringRef.h"
28#include "llvm/Support/ConvertUTF.h"
29#include "llvm/Support/CrashRecoveryContext.h"
30#include "llvm/Support/Unicode.h"
31#include "llvm/Support/raw_ostream.h"
32#include <algorithm>
33#include <cassert>
34#include <cstddef>
35#include <cstdint>
36#include <cstring>
37#include <limits>
38#include <string>
39#include <utility>
40#include <vector>
41
42using namespace clang;
43
45 DiagNullabilityKind nullability) {
46 DB.AddString(
47 ("'" +
48 getNullabilitySpelling(nullability.first,
49 /*isContextSensitive=*/nullability.second) +
50 "'")
51 .str());
52 return DB;
53}
54
56 llvm::Error &&E) {
57 DB.AddString(toString(std::move(E)));
58 return DB;
59}
60
62 StringRef Modifier, StringRef Argument,
65 void *Cookie,
66 ArrayRef<intptr_t> QualTypeVals) {
67 StringRef Str = "<can't format argument>";
68 Output.append(Str.begin(), Str.end());
69}
70
74 bool ShouldOwnClient)
75 : Diags(std::move(diags)), DiagOpts(std::move(DiagOpts)) {
76 setClient(client, ShouldOwnClient);
77 ArgToStringFn = DummyArgToStringFn;
78
79 Reset();
80}
81
83 // If we own the diagnostic client, destroy it first so that it can access the
84 // engine from its destructor.
85 setClient(nullptr);
86}
87
89 DiagStatesByLoc.dump(*SourceMgr);
90}
91
92void DiagnosticsEngine::dump(StringRef DiagName) const {
93 DiagStatesByLoc.dump(*SourceMgr, DiagName);
94}
95
97 bool ShouldOwnClient) {
98 Owner.reset(ShouldOwnClient ? client : nullptr);
99 Client = client;
100}
101
103 DiagStateOnPushStack.push_back(GetCurDiagState());
104}
105
107 if (DiagStateOnPushStack.empty())
108 return false;
109
110 if (DiagStateOnPushStack.back() != GetCurDiagState()) {
111 // State changed at some point between push/pop.
112 PushDiagStatePoint(DiagStateOnPushStack.back(), Loc);
113 }
114 DiagStateOnPushStack.pop_back();
115 return true;
116}
117
118void DiagnosticsEngine::Reset(bool soft /*=false*/) {
119 ErrorOccurred = false;
120 UncompilableErrorOccurred = false;
121 FatalErrorOccurred = false;
122 UnrecoverableErrorOccurred = false;
123
124 NumWarnings = 0;
125 NumErrors = 0;
126 TrapNumErrorsOccurred = 0;
127 TrapNumUnrecoverableErrorsOccurred = 0;
128
129 CurDiagID = std::numeric_limits<unsigned>::max();
130 LastDiagLevel = DiagnosticIDs::Ignored;
131 DelayedDiagID = 0;
132
133 if (!soft) {
134 // Clear state related to #pragma diagnostic.
135 DiagStates.clear();
136 DiagStatesByLoc.clear();
137 DiagStateOnPushStack.clear();
138
139 // Create a DiagState and DiagStatePoint representing diagnostic changes
140 // through command-line.
141 DiagStates.emplace_back();
142 DiagStatesByLoc.appendFirst(&DiagStates.back());
143 }
144}
145
146void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1,
147 StringRef Arg2, StringRef Arg3) {
148 if (DelayedDiagID)
149 return;
150
151 DelayedDiagID = DiagID;
152 DelayedDiagArg1 = Arg1.str();
153 DelayedDiagArg2 = Arg2.str();
154 DelayedDiagArg3 = Arg3.str();
155}
156
157void DiagnosticsEngine::ReportDelayed() {
158 unsigned ID = DelayedDiagID;
159 DelayedDiagID = 0;
160 Report(ID) << DelayedDiagArg1 << DelayedDiagArg2 << DelayedDiagArg3;
161}
162
164DiagnosticsEngine::DiagState::getOrAddMapping(diag::kind Diag) {
165 std::pair<iterator, bool> Result =
166 DiagMap.insert(std::make_pair(Diag, DiagnosticMapping()));
167
168 // Initialize the entry if we added it.
169 if (Result.second)
171
172 return Result.first->second;
173}
174
175void DiagnosticsEngine::DiagStateMap::appendFirst(DiagState *State) {
176 assert(Files.empty() && "not first");
177 FirstDiagState = CurDiagState = State;
178 CurDiagStateLoc = SourceLocation();
179}
180
181void DiagnosticsEngine::DiagStateMap::append(SourceManager &SrcMgr,
183 DiagState *State) {
184 CurDiagState = State;
185 CurDiagStateLoc = Loc;
186
187 std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc);
188 unsigned Offset = Decomp.second;
189 for (File *F = getFile(SrcMgr, Decomp.first); F;
190 Offset = F->ParentOffset, F = F->Parent) {
191 F->HasLocalTransitions = true;
192 auto &Last = F->StateTransitions.back();
193 assert(Last.Offset <= Offset && "state transitions added out of order");
194
195 if (Last.Offset == Offset) {
196 if (Last.State == State)
197 break;
198 Last.State = State;
199 continue;
200 }
201
202 F->StateTransitions.push_back({State, Offset});
203 }
204}
205
206DiagnosticsEngine::DiagState *
207DiagnosticsEngine::DiagStateMap::lookup(SourceManager &SrcMgr,
208 SourceLocation Loc) const {
209 // Common case: we have not seen any diagnostic pragmas.
210 if (Files.empty())
211 return FirstDiagState;
212
213 std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc);
214 const File *F = getFile(SrcMgr, Decomp.first);
215 return F->lookup(Decomp.second);
216}
217
218DiagnosticsEngine::DiagState *
219DiagnosticsEngine::DiagStateMap::File::lookup(unsigned Offset) const {
220 auto OnePastIt =
221 llvm::partition_point(StateTransitions, [=](const DiagStatePoint &P) {
222 return P.Offset <= Offset;
223 });
224 assert(OnePastIt != StateTransitions.begin() && "missing initial state");
225 return OnePastIt[-1].State;
226}
227
228DiagnosticsEngine::DiagStateMap::File *
229DiagnosticsEngine::DiagStateMap::getFile(SourceManager &SrcMgr,
230 FileID ID) const {
231 // Get or insert the File for this ID.
232 auto Range = Files.equal_range(ID);
233 if (Range.first != Range.second)
234 return &Range.first->second;
235 auto &F = Files.insert(Range.first, std::make_pair(ID, File()))->second;
236
237 // We created a new File; look up the diagnostic state at the start of it and
238 // initialize it.
239 if (ID.isValid()) {
240 std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedIncludedLoc(ID);
241 F.Parent = getFile(SrcMgr, Decomp.first);
242 F.ParentOffset = Decomp.second;
243 F.StateTransitions.push_back({F.Parent->lookup(Decomp.second), 0});
244 } else {
245 // This is the (imaginary) root file into which we pretend all top-level
246 // files are included; it descends from the initial state.
247 //
248 // FIXME: This doesn't guarantee that we use the same ordering as
249 // isBeforeInTranslationUnit in the cases where someone invented another
250 // top-level file and added diagnostic pragmas to it. See the code at the
251 // end of isBeforeInTranslationUnit for the quirks it deals with.
252 F.StateTransitions.push_back({FirstDiagState, 0});
253 }
254 return &F;
255}
256
257void DiagnosticsEngine::DiagStateMap::dump(SourceManager &SrcMgr,
258 StringRef DiagName) const {
259 llvm::errs() << "diagnostic state at ";
260 CurDiagStateLoc.print(llvm::errs(), SrcMgr);
261 llvm::errs() << ": " << CurDiagState << "\n";
262
263 for (auto &F : Files) {
264 FileID ID = F.first;
265 File &File = F.second;
266
267 bool PrintedOuterHeading = false;
268 auto PrintOuterHeading = [&] {
269 if (PrintedOuterHeading) return;
270 PrintedOuterHeading = true;
271
272 llvm::errs() << "File " << &File << " <FileID " << ID.getHashValue()
273 << ">: " << SrcMgr.getBufferOrFake(ID).getBufferIdentifier();
274
275 if (F.second.Parent) {
276 std::pair<FileID, unsigned> Decomp =
277 SrcMgr.getDecomposedIncludedLoc(ID);
278 assert(File.ParentOffset == Decomp.second);
279 llvm::errs() << " parent " << File.Parent << " <FileID "
280 << Decomp.first.getHashValue() << "> ";
281 SrcMgr.getLocForStartOfFile(Decomp.first)
282 .getLocWithOffset(Decomp.second)
283 .print(llvm::errs(), SrcMgr);
284 }
285 if (File.HasLocalTransitions)
286 llvm::errs() << " has_local_transitions";
287 llvm::errs() << "\n";
288 };
289
290 if (DiagName.empty())
291 PrintOuterHeading();
292
293 for (DiagStatePoint &Transition : File.StateTransitions) {
294 bool PrintedInnerHeading = false;
295 auto PrintInnerHeading = [&] {
296 if (PrintedInnerHeading) return;
297 PrintedInnerHeading = true;
298
299 PrintOuterHeading();
300 llvm::errs() << " ";
301 SrcMgr.getLocForStartOfFile(ID)
302 .getLocWithOffset(Transition.Offset)
303 .print(llvm::errs(), SrcMgr);
304 llvm::errs() << ": state " << Transition.State << ":\n";
305 };
306
307 if (DiagName.empty())
308 PrintInnerHeading();
309
310 for (auto &Mapping : *Transition.State) {
311 StringRef Option =
313 if (!DiagName.empty() && DiagName != Option)
314 continue;
315
316 PrintInnerHeading();
317 llvm::errs() << " ";
318 if (Option.empty())
319 llvm::errs() << "<unknown " << Mapping.first << ">";
320 else
321 llvm::errs() << Option;
322 llvm::errs() << ": ";
323
324 switch (Mapping.second.getSeverity()) {
325 case diag::Severity::Ignored: llvm::errs() << "ignored"; break;
326 case diag::Severity::Remark: llvm::errs() << "remark"; break;
327 case diag::Severity::Warning: llvm::errs() << "warning"; break;
328 case diag::Severity::Error: llvm::errs() << "error"; break;
329 case diag::Severity::Fatal: llvm::errs() << "fatal"; break;
330 }
331
332 if (!Mapping.second.isUser())
333 llvm::errs() << " default";
334 if (Mapping.second.isPragma())
335 llvm::errs() << " pragma";
336 if (Mapping.second.hasNoWarningAsError())
337 llvm::errs() << " no-error";
338 if (Mapping.second.hasNoErrorAsFatal())
339 llvm::errs() << " no-fatal";
340 if (Mapping.second.wasUpgradedFromWarning())
341 llvm::errs() << " overruled";
342 llvm::errs() << "\n";
343 }
344 }
345 }
346}
347
348void DiagnosticsEngine::PushDiagStatePoint(DiagState *State,
350 assert(Loc.isValid() && "Adding invalid loc point");
351 DiagStatesByLoc.append(*SourceMgr, Loc, State);
352}
353
355 SourceLocation L) {
356 assert(Diag < diag::DIAG_UPPER_LIMIT &&
357 "Can only map builtin diagnostics");
358 assert((Diags->isBuiltinWarningOrExtension(Diag) ||
359 (Map == diag::Severity::Fatal || Map == diag::Severity::Error)) &&
360 "Cannot map errors into warnings!");
361 assert((L.isInvalid() || SourceMgr) && "No SourceMgr for valid location");
362
363 // A command line -Wfoo has an invalid L and cannot override error/fatal
364 // mapping, while a warning pragma can.
365 bool WasUpgradedFromWarning = false;
366 if (Map == diag::Severity::Warning && L.isInvalid()) {
367 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
368 if (Info.getSeverity() == diag::Severity::Error ||
370 Map = Info.getSeverity();
371 WasUpgradedFromWarning = true;
372 }
373 }
374 DiagnosticMapping Mapping = makeUserMapping(Map, L);
375 Mapping.setUpgradedFromWarning(WasUpgradedFromWarning);
376
377 // Make sure we propagate the NoWarningAsError flag from an existing
378 // mapping (which may be the default mapping).
379 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
381 Mapping.hasNoWarningAsError());
382
383 // Common case; setting all the diagnostics of a group in one place.
384 if ((L.isInvalid() || L == DiagStatesByLoc.getCurDiagStateLoc()) &&
385 DiagStatesByLoc.getCurDiagState()) {
386 // FIXME: This is theoretically wrong: if the current state is shared with
387 // some other location (via push/pop) we will change the state for that
388 // other location as well. This cannot currently happen, as we can't update
389 // the diagnostic state at the same location at which we pop.
390 DiagStatesByLoc.getCurDiagState()->setMapping(Diag, Mapping);
391 return;
392 }
393
394 // A diagnostic pragma occurred, create a new DiagState initialized with
395 // the current one and a new DiagStatePoint to record at which location
396 // the new state became active.
397 DiagStates.push_back(*GetCurDiagState());
398 DiagStates.back().setMapping(Diag, Mapping);
399 PushDiagStatePoint(&DiagStates.back(), L);
400}
401
403 StringRef Group, diag::Severity Map,
405 // Get the diagnostics in this group.
407 if (Diags->getDiagnosticsInGroup(Flavor, Group, GroupDiags))
408 return true;
409
410 // Set the mapping.
411 for (diag::kind Diag : GroupDiags)
412 setSeverity(Diag, Map, Loc);
413
414 return false;
415}
416
418 diag::Group Group,
419 diag::Severity Map,
421 return setSeverityForGroup(Flavor, Diags->getWarningOptionForGroup(Group),
422 Map, Loc);
423}
424
426 bool Enabled) {
427 // If we are enabling this feature, just set the diagnostic mappings to map to
428 // errors.
429 if (Enabled)
432
433 // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and
434 // potentially downgrade anything already mapped to be a warning.
435
436 // Get the diagnostics in this group.
438 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
439 GroupDiags))
440 return true;
441
442 // Perform the mapping change.
443 for (diag::kind Diag : GroupDiags) {
444 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
445
446 if (Info.getSeverity() == diag::Severity::Error ||
449
450 Info.setNoWarningAsError(true);
451 }
452
453 return false;
454}
455
457 bool Enabled) {
458 // If we are enabling this feature, just set the diagnostic mappings to map to
459 // fatal errors.
460 if (Enabled)
463
464 // Otherwise, we want to set the diagnostic mapping's "no Wfatal-errors" bit,
465 // and potentially downgrade anything already mapped to be a fatal error.
466
467 // Get the diagnostics in this group.
469 if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
470 GroupDiags))
471 return true;
472
473 // Perform the mapping change.
474 for (diag::kind Diag : GroupDiags) {
475 DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
476
479
480 Info.setNoErrorAsFatal(true);
481 }
482
483 return false;
484}
485
487 diag::Severity Map,
489 // Get all the diagnostics.
490 std::vector<diag::kind> AllDiags;
491 DiagnosticIDs::getAllDiagnostics(Flavor, AllDiags);
492
493 // Set the mapping.
494 for (diag::kind Diag : AllDiags)
495 if (Diags->isBuiltinWarningOrExtension(Diag))
496 setSeverity(Diag, Map, Loc);
497}
498
500 assert(CurDiagID == std::numeric_limits<unsigned>::max() &&
501 "Multiple diagnostics in flight at once!");
502
503 CurDiagLoc = storedDiag.getLocation();
504 CurDiagID = storedDiag.getID();
505 DiagStorage.NumDiagArgs = 0;
506
507 DiagStorage.DiagRanges.clear();
508 DiagStorage.DiagRanges.append(storedDiag.range_begin(),
509 storedDiag.range_end());
510
511 DiagStorage.FixItHints.clear();
512 DiagStorage.FixItHints.append(storedDiag.fixit_begin(),
513 storedDiag.fixit_end());
514
515 assert(Client && "DiagnosticConsumer not set!");
516 Level DiagLevel = storedDiag.getLevel();
517 Diagnostic Info(this, storedDiag.getMessage());
518 Client->HandleDiagnostic(DiagLevel, Info);
519 if (Client->IncludeInDiagnosticCounts()) {
520 if (DiagLevel == DiagnosticsEngine::Warning)
521 ++NumWarnings;
522 }
523
524 CurDiagID = std::numeric_limits<unsigned>::max();
525}
526
528 assert(getClient() && "DiagnosticClient not set!");
529
530 bool Emitted;
531 if (Force) {
532 Diagnostic Info(this);
533
534 // Figure out the diagnostic level of this message.
535 DiagnosticIDs::Level DiagLevel
536 = Diags->getDiagnosticLevel(Info.getID(), Info.getLocation(), *this);
537
538 Emitted = (DiagLevel != DiagnosticIDs::Ignored);
539 if (Emitted) {
540 // Emit the diagnostic regardless of suppression level.
541 Diags->EmitDiag(*this, DiagLevel);
542 }
543 } else {
544 // Process the diagnostic, sending the accumulated information to the
545 // DiagnosticConsumer.
546 Emitted = ProcessDiag();
547 }
548
549 // Clear out the current diagnostic object.
550 Clear();
551
552 // If there was a delayed diagnostic, emit it now.
553 if (!Force && DelayedDiagID)
554 ReportDelayed();
555
556 return Emitted;
557}
558
560
562 const Diagnostic &Info) {
564 return;
565
566 if (DiagLevel == DiagnosticsEngine::Warning)
567 ++NumWarnings;
568 else if (DiagLevel >= DiagnosticsEngine::Error)
569 ++NumErrors;
570}
571
572/// ModifierIs - Return true if the specified modifier matches specified string.
573template <std::size_t StrLen>
574static bool ModifierIs(const char *Modifier, unsigned ModifierLen,
575 const char (&Str)[StrLen]) {
576 return StrLen-1 == ModifierLen && memcmp(Modifier, Str, StrLen-1) == 0;
577}
578
579/// ScanForward - Scans forward, looking for the given character, skipping
580/// nested clauses and escaped characters.
581static const char *ScanFormat(const char *I, const char *E, char Target) {
582 unsigned Depth = 0;
583
584 for ( ; I != E; ++I) {
585 if (Depth == 0 && *I == Target) return I;
586 if (Depth != 0 && *I == '}') Depth--;
587
588 if (*I == '%') {
589 I++;
590 if (I == E) break;
591
592 // Escaped characters get implicitly skipped here.
593
594 // Format specifier.
595 if (!isDigit(*I) && !isPunctuation(*I)) {
596 for (I++; I != E && !isDigit(*I) && *I != '{'; I++) ;
597 if (I == E) break;
598 if (*I == '{')
599 Depth++;
600 }
601 }
602 }
603 return E;
604}
605
606/// HandleSelectModifier - Handle the integer 'select' modifier. This is used
607/// like this: %select{foo|bar|baz}2. This means that the integer argument
608/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'.
609/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'.
610/// This is very useful for certain classes of variant diagnostics.
611static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo,
612 const char *Argument, unsigned ArgumentLen,
613 SmallVectorImpl<char> &OutStr) {
614 const char *ArgumentEnd = Argument+ArgumentLen;
615
616 // Skip over 'ValNo' |'s.
617 while (ValNo) {
618 const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|');
619 assert(NextVal != ArgumentEnd && "Value for integer select modifier was"
620 " larger than the number of options in the diagnostic string!");
621 Argument = NextVal+1; // Skip this string.
622 --ValNo;
623 }
624
625 // Get the end of the value. This is either the } or the |.
626 const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|');
627
628 // Recursively format the result of the select clause into the output string.
629 DInfo.FormatDiagnostic(Argument, EndPtr, OutStr);
630}
631
632/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the
633/// letter 's' to the string if the value is not 1. This is used in cases like
634/// this: "you idiot, you have %4 parameter%s4!".
635static void HandleIntegerSModifier(unsigned ValNo,
636 SmallVectorImpl<char> &OutStr) {
637 if (ValNo != 1)
638 OutStr.push_back('s');
639}
640
641/// HandleOrdinalModifier - Handle the integer 'ord' modifier. This
642/// prints the ordinal form of the given integer, with 1 corresponding
643/// to the first ordinal. Currently this is hard-coded to use the
644/// English form.
645static void HandleOrdinalModifier(unsigned ValNo,
646 SmallVectorImpl<char> &OutStr) {
647 assert(ValNo != 0 && "ValNo must be strictly positive!");
648
649 llvm::raw_svector_ostream Out(OutStr);
650
651 // We could use text forms for the first N ordinals, but the numeric
652 // forms are actually nicer in diagnostics because they stand out.
653 Out << ValNo << llvm::getOrdinalSuffix(ValNo);
654}
655
656/// PluralNumber - Parse an unsigned integer and advance Start.
657static unsigned PluralNumber(const char *&Start, const char *End) {
658 // Programming 101: Parse a decimal number :-)
659 unsigned Val = 0;
660 while (Start != End && *Start >= '0' && *Start <= '9') {
661 Val *= 10;
662 Val += *Start - '0';
663 ++Start;
664 }
665 return Val;
666}
667
668/// TestPluralRange - Test if Val is in the parsed range. Modifies Start.
669static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) {
670 if (*Start != '[') {
671 unsigned Ref = PluralNumber(Start, End);
672 return Ref == Val;
673 }
674
675 ++Start;
676 unsigned Low = PluralNumber(Start, End);
677 assert(*Start == ',' && "Bad plural expression syntax: expected ,");
678 ++Start;
679 unsigned High = PluralNumber(Start, End);
680 assert(*Start == ']' && "Bad plural expression syntax: expected )");
681 ++Start;
682 return Low <= Val && Val <= High;
683}
684
685/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier.
686static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) {
687 // Empty condition?
688 if (*Start == ':')
689 return true;
690
691 while (true) {
692 char C = *Start;
693 if (C == '%') {
694 // Modulo expression
695 ++Start;
696 unsigned Arg = PluralNumber(Start, End);
697 assert(*Start == '=' && "Bad plural expression syntax: expected =");
698 ++Start;
699 unsigned ValMod = ValNo % Arg;
700 if (TestPluralRange(ValMod, Start, End))
701 return true;
702 } else {
703 assert((C == '[' || (C >= '0' && C <= '9')) &&
704 "Bad plural expression syntax: unexpected character");
705 // Range expression
706 if (TestPluralRange(ValNo, Start, End))
707 return true;
708 }
709
710 // Scan for next or-expr part.
711 Start = std::find(Start, End, ',');
712 if (Start == End)
713 break;
714 ++Start;
715 }
716 return false;
717}
718
719/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used
720/// for complex plural forms, or in languages where all plurals are complex.
721/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are
722/// conditions that are tested in order, the form corresponding to the first
723/// that applies being emitted. The empty condition is always true, making the
724/// last form a default case.
725/// Conditions are simple boolean expressions, where n is the number argument.
726/// Here are the rules.
727/// condition := expression | empty
728/// empty := -> always true
729/// expression := numeric [',' expression] -> logical or
730/// numeric := range -> true if n in range
731/// | '%' number '=' range -> true if n % number in range
732/// range := number
733/// | '[' number ',' number ']' -> ranges are inclusive both ends
734///
735/// Here are some examples from the GNU gettext manual written in this form:
736/// English:
737/// {1:form0|:form1}
738/// Latvian:
739/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0}
740/// Gaeilge:
741/// {1:form0|2:form1|:form2}
742/// Romanian:
743/// {1:form0|0,%100=[1,19]:form1|:form2}
744/// Lithuanian:
745/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1}
746/// Russian (requires repeated form):
747/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2}
748/// Slovak
749/// {1:form0|[2,4]:form1|:form2}
750/// Polish (requires repeated form):
751/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2}
752static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo,
753 const char *Argument, unsigned ArgumentLen,
754 SmallVectorImpl<char> &OutStr) {
755 const char *ArgumentEnd = Argument + ArgumentLen;
756 while (true) {
757 assert(Argument < ArgumentEnd && "Plural expression didn't match.");
758 const char *ExprEnd = Argument;
759 while (*ExprEnd != ':') {
760 assert(ExprEnd != ArgumentEnd && "Plural missing expression end");
761 ++ExprEnd;
762 }
763 if (EvalPluralExpr(ValNo, Argument, ExprEnd)) {
764 Argument = ExprEnd + 1;
765 ExprEnd = ScanFormat(Argument, ArgumentEnd, '|');
766
767 // Recursively format the result of the plural clause into the
768 // output string.
769 DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr);
770 return;
771 }
772 Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1;
773 }
774}
775
776/// Returns the friendly description for a token kind that will appear
777/// without quotes in diagnostic messages. These strings may be translatable in
778/// future.
780 switch (Kind) {
781 case tok::identifier:
782 return "identifier";
783 default:
784 return nullptr;
785 }
786}
787
788/// FormatDiagnostic - Format this diagnostic into a string, substituting the
789/// formal arguments into the %0 slots. The result is appended onto the Str
790/// array.
793 if (StoredDiagMessage.has_value()) {
794 OutStr.append(StoredDiagMessage->begin(), StoredDiagMessage->end());
795 return;
796 }
797
798 StringRef Diag =
799 getDiags()->getDiagnosticIDs()->getDescription(getID());
800
801 FormatDiagnostic(Diag.begin(), Diag.end(), OutStr);
802}
803
804/// EscapeStringForDiagnostic - Append Str to the diagnostic buffer,
805/// escaping non-printable characters and ill-formed code unit sequences.
807 SmallVectorImpl<char> &OutStr) {
808 OutStr.reserve(OutStr.size() + Str.size());
809 auto *Begin = reinterpret_cast<const unsigned char *>(Str.data());
810 llvm::raw_svector_ostream OutStream(OutStr);
811 const unsigned char *End = Begin + Str.size();
812 while (Begin != End) {
813 // ASCII case
814 if (isPrintable(*Begin) || isWhitespace(*Begin)) {
815 OutStream << *Begin;
816 ++Begin;
817 continue;
818 }
819 if (llvm::isLegalUTF8Sequence(Begin, End)) {
820 llvm::UTF32 CodepointValue;
821 llvm::UTF32 *CpPtr = &CodepointValue;
822 const unsigned char *CodepointBegin = Begin;
823 const unsigned char *CodepointEnd =
824 Begin + llvm::getNumBytesForUTF8(*Begin);
825 llvm::ConversionResult Res = llvm::ConvertUTF8toUTF32(
826 &Begin, CodepointEnd, &CpPtr, CpPtr + 1, llvm::strictConversion);
827 (void)Res;
828 assert(
829 llvm::conversionOK == Res &&
830 "the sequence is legal UTF-8 but we couldn't convert it to UTF-32");
831 assert(Begin == CodepointEnd &&
832 "we must be further along in the string now");
833 if (llvm::sys::unicode::isPrintable(CodepointValue) ||
834 llvm::sys::unicode::isFormatting(CodepointValue)) {
835 OutStr.append(CodepointBegin, CodepointEnd);
836 continue;
837 }
838 // Unprintable code point.
839 OutStream << "<U+" << llvm::format_hex_no_prefix(CodepointValue, 4, true)
840 << ">";
841 continue;
842 }
843 // Invalid code unit.
844 OutStream << "<" << llvm::format_hex_no_prefix(*Begin, 2, true) << ">";
845 ++Begin;
846 }
847}
848
850FormatDiagnostic(const char *DiagStr, const char *DiagEnd,
851 SmallVectorImpl<char> &OutStr) const {
852 // When the diagnostic string is only "%0", the entire string is being given
853 // by an outside source. Remove unprintable characters from this string
854 // and skip all the other string processing.
855 if (DiagEnd - DiagStr == 2 && StringRef(DiagStr, DiagEnd - DiagStr) == "%0" &&
857 const std::string &S = getArgStdStr(0);
858 EscapeStringForDiagnostic(S, OutStr);
859 return;
860 }
861
862 /// FormattedArgs - Keep track of all of the arguments formatted by
863 /// ConvertArgToString and pass them into subsequent calls to
864 /// ConvertArgToString, allowing the implementation to avoid redundancies in
865 /// obvious cases.
867
868 /// QualTypeVals - Pass a vector of arrays so that QualType names can be
869 /// compared to see if more information is needed to be printed.
870 SmallVector<intptr_t, 2> QualTypeVals;
872
873 for (unsigned i = 0, e = getNumArgs(); i < e; ++i)
875 QualTypeVals.push_back(getRawArg(i));
876
877 while (DiagStr != DiagEnd) {
878 if (DiagStr[0] != '%') {
879 // Append non-%0 substrings to Str if we have one.
880 const char *StrEnd = std::find(DiagStr, DiagEnd, '%');
881 OutStr.append(DiagStr, StrEnd);
882 DiagStr = StrEnd;
883 continue;
884 } else if (isPunctuation(DiagStr[1])) {
885 OutStr.push_back(DiagStr[1]); // %% -> %.
886 DiagStr += 2;
887 continue;
888 }
889
890 // Skip the %.
891 ++DiagStr;
892
893 // This must be a placeholder for a diagnostic argument. The format for a
894 // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0".
895 // The digit is a number from 0-9 indicating which argument this comes from.
896 // The modifier is a string of digits from the set [-a-z]+, arguments is a
897 // brace enclosed string.
898 const char *Modifier = nullptr, *Argument = nullptr;
899 unsigned ModifierLen = 0, ArgumentLen = 0;
900
901 // Check to see if we have a modifier. If so eat it.
902 if (!isDigit(DiagStr[0])) {
903 Modifier = DiagStr;
904 while (DiagStr[0] == '-' ||
905 (DiagStr[0] >= 'a' && DiagStr[0] <= 'z'))
906 ++DiagStr;
907 ModifierLen = DiagStr-Modifier;
908
909 // If we have an argument, get it next.
910 if (DiagStr[0] == '{') {
911 ++DiagStr; // Skip {.
912 Argument = DiagStr;
913
914 DiagStr = ScanFormat(DiagStr, DiagEnd, '}');
915 assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!");
916 ArgumentLen = DiagStr-Argument;
917 ++DiagStr; // Skip }.
918 }
919 }
920
921 assert(isDigit(*DiagStr) && "Invalid format for argument in diagnostic");
922 unsigned ArgNo = *DiagStr++ - '0';
923
924 // Only used for type diffing.
925 unsigned ArgNo2 = ArgNo;
926
928 if (ModifierIs(Modifier, ModifierLen, "diff")) {
929 assert(*DiagStr == ',' && isDigit(*(DiagStr + 1)) &&
930 "Invalid format for diff modifier");
931 ++DiagStr; // Comma.
932 ArgNo2 = *DiagStr++ - '0';
934 if (Kind == DiagnosticsEngine::ak_qualtype &&
937 else {
938 // %diff only supports QualTypes. For other kinds of arguments,
939 // use the default printing. For example, if the modifier is:
940 // "%diff{compare $ to $|other text}1,2"
941 // treat it as:
942 // "compare %1 to %2"
943 const char *ArgumentEnd = Argument + ArgumentLen;
944 const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
945 assert(ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&
946 "Found too many '|'s in a %diff modifier!");
947 const char *FirstDollar = ScanFormat(Argument, Pipe, '$');
948 const char *SecondDollar = ScanFormat(FirstDollar + 1, Pipe, '$');
949 const char ArgStr1[] = { '%', static_cast<char>('0' + ArgNo) };
950 const char ArgStr2[] = { '%', static_cast<char>('0' + ArgNo2) };
951 FormatDiagnostic(Argument, FirstDollar, OutStr);
952 FormatDiagnostic(ArgStr1, ArgStr1 + 2, OutStr);
953 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
954 FormatDiagnostic(ArgStr2, ArgStr2 + 2, OutStr);
955 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
956 continue;
957 }
958 }
959
960 switch (Kind) {
961 // ---- STRINGS ----
963 const std::string &S = getArgStdStr(ArgNo);
964 assert(ModifierLen == 0 && "No modifiers for strings yet");
965 EscapeStringForDiagnostic(S, OutStr);
966 break;
967 }
969 const char *S = getArgCStr(ArgNo);
970 assert(ModifierLen == 0 && "No modifiers for strings yet");
971
972 // Don't crash if get passed a null pointer by accident.
973 if (!S)
974 S = "(null)";
975 EscapeStringForDiagnostic(S, OutStr);
976 break;
977 }
978 // ---- INTEGERS ----
980 int64_t Val = getArgSInt(ArgNo);
981
982 if (ModifierIs(Modifier, ModifierLen, "select")) {
983 HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen,
984 OutStr);
985 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
986 HandleIntegerSModifier(Val, OutStr);
987 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
988 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
989 OutStr);
990 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
991 HandleOrdinalModifier((unsigned)Val, OutStr);
992 } else {
993 assert(ModifierLen == 0 && "Unknown integer modifier");
994 llvm::raw_svector_ostream(OutStr) << Val;
995 }
996 break;
997 }
999 uint64_t Val = getArgUInt(ArgNo);
1000
1001 if (ModifierIs(Modifier, ModifierLen, "select")) {
1002 HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr);
1003 } else if (ModifierIs(Modifier, ModifierLen, "s")) {
1004 HandleIntegerSModifier(Val, OutStr);
1005 } else if (ModifierIs(Modifier, ModifierLen, "plural")) {
1006 HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
1007 OutStr);
1008 } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
1009 HandleOrdinalModifier(Val, OutStr);
1010 } else {
1011 assert(ModifierLen == 0 && "Unknown integer modifier");
1012 llvm::raw_svector_ostream(OutStr) << Val;
1013 }
1014 break;
1015 }
1016 // ---- TOKEN SPELLINGS ----
1018 tok::TokenKind Kind = static_cast<tok::TokenKind>(getRawArg(ArgNo));
1019 assert(ModifierLen == 0 && "No modifiers for token kinds yet");
1020
1021 llvm::raw_svector_ostream Out(OutStr);
1022 if (const char *S = tok::getPunctuatorSpelling(Kind))
1023 // Quoted token spelling for punctuators.
1024 Out << '\'' << S << '\'';
1025 else if ((S = tok::getKeywordSpelling(Kind)))
1026 // Unquoted token spelling for keywords.
1027 Out << S;
1028 else if ((S = getTokenDescForDiagnostic(Kind)))
1029 // Unquoted translatable token name.
1030 Out << S;
1031 else if ((S = tok::getTokenName(Kind)))
1032 // Debug name, shouldn't appear in user-facing diagnostics.
1033 Out << '<' << S << '>';
1034 else
1035 Out << "(null)";
1036 break;
1037 }
1038 // ---- NAMES and TYPES ----
1040 const IdentifierInfo *II = getArgIdentifier(ArgNo);
1041 assert(ModifierLen == 0 && "No modifiers for strings yet");
1042
1043 // Don't crash if get passed a null pointer by accident.
1044 if (!II) {
1045 const char *S = "(null)";
1046 OutStr.append(S, S + strlen(S));
1047 continue;
1048 }
1049
1050 llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
1051 break;
1052 }
1061 getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
1062 StringRef(Modifier, ModifierLen),
1063 StringRef(Argument, ArgumentLen),
1064 FormattedArgs,
1065 OutStr, QualTypeVals);
1066 break;
1068 // Create a struct with all the info needed for printing.
1070 TDT.FromType = getRawArg(ArgNo);
1071 TDT.ToType = getRawArg(ArgNo2);
1072 TDT.ElideType = getDiags()->ElideType;
1073 TDT.ShowColors = getDiags()->ShowColors;
1074 TDT.TemplateDiffUsed = false;
1075 intptr_t val = reinterpret_cast<intptr_t>(&TDT);
1076
1077 const char *ArgumentEnd = Argument + ArgumentLen;
1078 const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
1079
1080 // Print the tree. If this diagnostic already has a tree, skip the
1081 // second tree.
1082 if (getDiags()->PrintTemplateTree && Tree.empty()) {
1083 TDT.PrintFromType = true;
1084 TDT.PrintTree = true;
1085 getDiags()->ConvertArgToString(Kind, val,
1086 StringRef(Modifier, ModifierLen),
1087 StringRef(Argument, ArgumentLen),
1088 FormattedArgs,
1089 Tree, QualTypeVals);
1090 // If there is no tree information, fall back to regular printing.
1091 if (!Tree.empty()) {
1092 FormatDiagnostic(Pipe + 1, ArgumentEnd, OutStr);
1093 break;
1094 }
1095 }
1096
1097 // Non-tree printing, also the fall-back when tree printing fails.
1098 // The fall-back is triggered when the types compared are not templates.
1099 const char *FirstDollar = ScanFormat(Argument, ArgumentEnd, '$');
1100 const char *SecondDollar = ScanFormat(FirstDollar + 1, ArgumentEnd, '$');
1101
1102 // Append before text
1103 FormatDiagnostic(Argument, FirstDollar, OutStr);
1104
1105 // Append first type
1106 TDT.PrintTree = false;
1107 TDT.PrintFromType = true;
1108 getDiags()->ConvertArgToString(Kind, val,
1109 StringRef(Modifier, ModifierLen),
1110 StringRef(Argument, ArgumentLen),
1111 FormattedArgs,
1112 OutStr, QualTypeVals);
1113 if (!TDT.TemplateDiffUsed)
1114 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
1115 TDT.FromType));
1116
1117 // Append middle text
1118 FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
1119
1120 // Append second type
1121 TDT.PrintFromType = false;
1122 getDiags()->ConvertArgToString(Kind, val,
1123 StringRef(Modifier, ModifierLen),
1124 StringRef(Argument, ArgumentLen),
1125 FormattedArgs,
1126 OutStr, QualTypeVals);
1127 if (!TDT.TemplateDiffUsed)
1128 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
1129 TDT.ToType));
1130
1131 // Append end text
1132 FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
1133 break;
1134 }
1135 }
1136
1137 // Remember this argument info for subsequent formatting operations. Turn
1138 // std::strings into a null terminated string to make it be the same case as
1139 // all the other ones.
1141 continue;
1142 else if (Kind != DiagnosticsEngine::ak_std_string)
1143 FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
1144 else
1145 FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string,
1146 (intptr_t)getArgStdStr(ArgNo).c_str()));
1147 }
1148
1149 // Append the type tree to the end of the diagnostics.
1150 OutStr.append(Tree.begin(), Tree.end());
1151}
1152
1154 StringRef Message)
1155 : ID(ID), Level(Level), Message(Message) {}
1156
1158 const Diagnostic &Info)
1159 : ID(Info.getID()), Level(Level) {
1160 assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) &&
1161 "Valid source location without setting a source manager for diagnostic");
1162 if (Info.getLocation().isValid())
1164 SmallString<64> Message;
1165 Info.FormatDiagnostic(Message);
1166 this->Message.assign(Message.begin(), Message.end());
1167 this->Ranges.assign(Info.getRanges().begin(), Info.getRanges().end());
1168 this->FixIts.assign(Info.getFixItHints().begin(), Info.getFixItHints().end());
1169}
1170
1172 StringRef Message, FullSourceLoc Loc,
1174 ArrayRef<FixItHint> FixIts)
1175 : ID(ID), Level(Level), Loc(Loc), Message(Message),
1176 Ranges(Ranges.begin(), Ranges.end()), FixIts(FixIts.begin(), FixIts.end())
1177{
1178}
1179
1180llvm::raw_ostream &clang::operator<<(llvm::raw_ostream &OS,
1181 const StoredDiagnostic &SD) {
1182 if (SD.getLocation().hasManager())
1183 OS << SD.getLocation().printToString(SD.getLocation().getManager()) << ": ";
1184 OS << SD.getMessage();
1185 return OS;
1186}
1187
1188/// IncludeInDiagnosticCounts - This method (whose default implementation
1189/// returns true) indicates whether the diagnostics handled by this
1190/// DiagnosticConsumer should be included in the number of diagnostics
1191/// reported by DiagnosticsEngine.
1193
1194void IgnoringDiagConsumer::anchor() {}
1195
1197
1199 DiagnosticsEngine::Level DiagLevel,
1200 const Diagnostic &Info) {
1201 Target.HandleDiagnostic(DiagLevel, Info);
1202}
1203
1206 Target.clear();
1207}
1208
1210 return Target.IncludeInDiagnosticCounts();
1211}
1212
1213PartialDiagnostic::DiagStorageAllocator::DiagStorageAllocator() {
1214 for (unsigned I = 0; I != NumCached; ++I)
1215 FreeList[I] = Cached + I;
1216 NumFreeListEntries = NumCached;
1217}
1218
1219PartialDiagnostic::DiagStorageAllocator::~DiagStorageAllocator() {
1220 // Don't assert if we are in a CrashRecovery context, as this invariant may
1221 // be invalidated during a crash.
1222 assert((NumFreeListEntries == NumCached ||
1223 llvm::CrashRecoveryContext::isRecoveringFromCrash()) &&
1224 "A partial is on the lam");
1225}
1226
SyntaxTree::Impl & Tree
Definition: ASTDiff.cpp:192
StringRef P
static const char * ScanFormat(const char *I, const char *E, char Target)
ScanForward - Scans forward, looking for the given character, skipping nested clauses and escaped cha...
Definition: Diagnostic.cpp:581
static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo, const char *Argument, unsigned ArgumentLen, SmallVectorImpl< char > &OutStr)
HandlePluralModifier - Handle the integer 'plural' modifier.
Definition: Diagnostic.cpp:752
static void HandleIntegerSModifier(unsigned ValNo, SmallVectorImpl< char > &OutStr)
HandleIntegerSModifier - Handle the integer 's' modifier.
Definition: Diagnostic.cpp:635
static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT, StringRef Modifier, StringRef Argument, ArrayRef< DiagnosticsEngine::ArgumentValue > PrevArgs, SmallVectorImpl< char > &Output, void *Cookie, ArrayRef< intptr_t > QualTypeVals)
Definition: Diagnostic.cpp:61
static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End)
EvalPluralExpr - Actual expression evaluator for HandlePluralModifier.
Definition: Diagnostic.cpp:686
static unsigned PluralNumber(const char *&Start, const char *End)
PluralNumber - Parse an unsigned integer and advance Start.
Definition: Diagnostic.cpp:657
static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo, const char *Argument, unsigned ArgumentLen, SmallVectorImpl< char > &OutStr)
HandleSelectModifier - Handle the integer 'select' modifier.
Definition: Diagnostic.cpp:611
static bool ModifierIs(const char *Modifier, unsigned ModifierLen, const char(&Str)[StrLen])
ModifierIs - Return true if the specified modifier matches specified string.
Definition: Diagnostic.cpp:574
static bool TestPluralRange(unsigned Val, const char *&Start, const char *End)
TestPluralRange - Test if Val is in the parsed range. Modifies Start.
Definition: Diagnostic.cpp:669
static void HandleOrdinalModifier(unsigned ValNo, SmallVectorImpl< char > &OutStr)
HandleOrdinalModifier - Handle the integer 'ord' modifier.
Definition: Diagnostic.cpp:645
static const char * getTokenDescForDiagnostic(tok::TokenKind Kind)
Returns the friendly description for a token kind that will appear without quotes in diagnostic messa...
Definition: Diagnostic.cpp:779
Defines the Diagnostic-related interfaces.
Defines the Diagnostic IDs-related interfaces.
Defines the clang::IdentifierInfo, clang::IdentifierTable, and clang::Selector interfaces.
static DiagnosticBuilder Diag(DiagnosticsEngine *Diags, const LangOptions &Features, FullSourceLoc TokLoc, const char *TokBegin, const char *TokRangeBegin, const char *TokRangeEnd, unsigned DiagID)
Produce a diagnostic highlighting some portion of a literal.
llvm::MachO::Target Target
Definition: MachO.h:51
Implements a partial diagnostic that can be emitted anwyhere in a DiagnosticBuilder stream.
static std::string toString(const clang::SanitizerSet &Sanitizers)
Produce a string containing comma-separated names of sanitizers in Sanitizers set.
SourceRange Range
Definition: SemaObjC.cpp:757
SourceLocation Loc
Definition: SemaObjC.cpp:758
Defines the clang::SourceLocation class and associated facilities.
Defines the SourceManager interface.
Defines various enumerations that describe declaration and type specifiers.
Defines the clang::TokenKind enum and support functions.
SourceLocation Begin
Abstract interface, implemented by clients of the front-end, which formats and prints fully processed...
Definition: Diagnostic.h:1745
virtual void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, const Diagnostic &Info)
Handle this diagnostic, reporting it to the user or capturing it to a log as needed.
Definition: Diagnostic.cpp:561
unsigned NumErrors
Number of errors reported.
Definition: Diagnostic.h:1748
unsigned NumWarnings
Number of warnings reported.
Definition: Diagnostic.h:1747
virtual bool IncludeInDiagnosticCounts() const
Indicates whether the diagnostics handled by this DiagnosticConsumer should be included in the number...
static StringRef getWarningOptionForDiag(unsigned DiagID)
Return the lowest-level warning option that enables the specified diagnostic.
Level
The level of the diagnostic, after it has been through mapping.
static void getAllDiagnostics(diag::Flavor Flavor, std::vector< diag::kind > &Diags)
Get the set of all diagnostic IDs.
static DiagnosticMapping getDefaultMapping(unsigned DiagID)
Get the default mapping for this diagnostic.
void setNoWarningAsError(bool Value)
void setSeverity(diag::Severity Value)
diag::Severity getSeverity() const
void setUpgradedFromWarning(bool Value)
void setNoErrorAsFatal(bool Value)
bool hasNoWarningAsError() const
A little helper class (which is basically a smart pointer that forwards info from DiagnosticsEngine) ...
Definition: Diagnostic.h:1571
const SourceLocation & getLocation() const
Definition: Diagnostic.h:1582
const std::string & getArgStdStr(unsigned Idx) const
Return the provided argument string specified by Idx.
Definition: Diagnostic.h:1602
void FormatDiagnostic(SmallVectorImpl< char > &OutStr) const
Format this diagnostic into a string, substituting the formal arguments into the %0 slots.
Definition: Diagnostic.cpp:792
uint64_t getRawArg(unsigned Idx) const
Return the specified non-string argument in an opaque form.
Definition: Diagnostic.h:1644
const char * getArgCStr(unsigned Idx) const
Return the specified C string argument.
Definition: Diagnostic.h:1610
const IdentifierInfo * getArgIdentifier(unsigned Idx) const
Return the specified IdentifierInfo argument.
Definition: Diagnostic.h:1635
SourceManager & getSourceManager() const
Definition: Diagnostic.h:1584
ArrayRef< FixItHint > getFixItHints() const
Definition: Diagnostic.h:1675
unsigned getNumArgs() const
Definition: Diagnostic.h:1586
bool hasSourceManager() const
Definition: Diagnostic.h:1583
unsigned getID() const
Definition: Diagnostic.h:1581
DiagnosticsEngine::ArgumentKind getArgKind(unsigned Idx) const
Return the kind of the specified index.
Definition: Diagnostic.h:1594
int64_t getArgSInt(unsigned Idx) const
Return the specified signed integer argument.
Definition: Diagnostic.h:1619
uint64_t getArgUInt(unsigned Idx) const
Return the specified unsigned integer argument.
Definition: Diagnostic.h:1627
ArrayRef< CharSourceRange > getRanges() const
Return an array reference for this diagnostic's ranges.
Definition: Diagnostic.h:1662
const DiagnosticsEngine * getDiags() const
Definition: Diagnostic.h:1580
DiagnosticBuilder Report(SourceLocation Loc, unsigned DiagID)
Issue the message to the client.
Definition: Diagnostic.h:1547
void setSeverityForAll(diag::Flavor Flavor, diag::Severity Map, SourceLocation Loc=SourceLocation())
Add the specified mapping to all diagnostics of the specified flavor.
Definition: Diagnostic.cpp:486
LLVM_DUMP_METHOD void dump() const
Definition: Diagnostic.cpp:88
void setClient(DiagnosticConsumer *client, bool ShouldOwnClient=true)
Set the diagnostic client associated with this diagnostic object.
Definition: Diagnostic.cpp:96
void Clear()
Clear out the current diagnostic.
Definition: Diagnostic.h:982
void pushMappings(SourceLocation Loc)
Copies the current DiagMappings and pushes the new copy onto the top of the stack.
Definition: Diagnostic.cpp:102
void setSeverity(diag::kind Diag, diag::Severity Map, SourceLocation Loc)
This allows the client to specify that certain warnings are ignored.
Definition: Diagnostic.cpp:354
Level
The level of the diagnostic, after it has been through mapping.
Definition: Diagnostic.h:195
DiagnosticConsumer * getClient()
Definition: Diagnostic.h:572
@ ak_nameddecl
NamedDecl *.
Definition: Diagnostic.h:236
@ ak_declcontext
DeclContext *.
Definition: Diagnostic.h:242
@ ak_addrspace
address space
Definition: Diagnostic.h:224
@ ak_identifierinfo
IdentifierInfo.
Definition: Diagnostic.h:221
@ ak_qualtype_pair
pair<QualType, QualType>
Definition: Diagnostic.h:245
@ ak_c_string
const char *
Definition: Diagnostic.h:209
@ ak_declarationname
DeclarationName.
Definition: Diagnostic.h:233
@ ak_tokenkind
enum TokenKind : unsigned
Definition: Diagnostic.h:218
@ ak_std_string
std::string
Definition: Diagnostic.h:206
@ ak_nestednamespec
NestedNameSpecifier *.
Definition: Diagnostic.h:239
DiagnosticsEngine(IntrusiveRefCntPtr< DiagnosticIDs > Diags, IntrusiveRefCntPtr< DiagnosticOptions > DiagOpts, DiagnosticConsumer *client=nullptr, bool ShouldOwnClient=true)
Definition: Diagnostic.cpp:71
bool EmitCurrentDiagnostic(bool Force=false)
Emit the current diagnostic and clear the diagnostic state.
Definition: Diagnostic.cpp:527
bool setDiagnosticGroupErrorAsFatal(StringRef Group, bool Enabled)
Set the error-as-fatal flag for the given diagnostic group.
Definition: Diagnostic.cpp:456
bool setDiagnosticGroupWarningAsError(StringRef Group, bool Enabled)
Set the warning-as-error flag for the given diagnostic group.
Definition: Diagnostic.cpp:425
void ConvertArgToString(ArgumentKind Kind, intptr_t Val, StringRef Modifier, StringRef Argument, ArrayRef< ArgumentValue > PrevArgs, SmallVectorImpl< char > &Output, ArrayRef< intptr_t > QualTypeVals) const
Converts a diagnostic argument (as an intptr_t) into the string that represents it.
Definition: Diagnostic.h:880
void SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1="", StringRef Arg2="", StringRef Arg3="")
Set the "delayed" diagnostic that will be emitted once the current diagnostic completes.
Definition: Diagnostic.cpp:146
bool setSeverityForGroup(diag::Flavor Flavor, StringRef Group, diag::Severity Map, SourceLocation Loc=SourceLocation())
Change an entire diagnostic group (e.g.
Definition: Diagnostic.cpp:402
bool popMappings(SourceLocation Loc)
Pops the current DiagMappings off the top of the stack, causing the new top of the stack to be the ac...
Definition: Diagnostic.cpp:106
const IntrusiveRefCntPtr< DiagnosticIDs > & getDiagnosticIDs() const
Definition: Diagnostic.h:557
void Reset(bool soft=false)
Reset the state of the diagnostic object to its initial configuration.
Definition: Diagnostic.cpp:118
An opaque identifier used by SourceManager which refers to a source file (MemoryBuffer) along with it...
bool IncludeInDiagnosticCounts() const override
Indicates whether the diagnostics handled by this DiagnosticConsumer should be included in the number...
void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, const Diagnostic &Info) override
Handle this diagnostic, reporting it to the user or capturing it to a log as needed.
A SourceLocation and its associated SourceManager.
bool hasManager() const
Checks whether the SourceManager is present.
const SourceManager & getManager() const
One of these records is kept for each identifier that is lexed.
StringRef getName() const
Return the actual identifier string.
Encodes a location in the source.
std::string printToString(const SourceManager &SM) const
bool isValid() const
Return true if this is a valid SourceLocation object.
void print(raw_ostream &OS, const SourceManager &SM) const
SourceLocation getLocWithOffset(IntTy Offset) const
Return a source location with the specified offset from this SourceLocation.
This class handles loading and caching of source files into memory.
llvm::MemoryBufferRef getBufferOrFake(FileID FID, SourceLocation Loc=SourceLocation()) const
Return the buffer for the specified FileID.
std::pair< FileID, unsigned > getDecomposedLoc(SourceLocation Loc) const
Decompose the specified location into a raw FileID + Offset pair.
SourceLocation getLocForStartOfFile(FileID FID) const
Return the source location corresponding to the first byte of the specified file.
std::pair< FileID, unsigned > getDecomposedIncludedLoc(FileID FID) const
Returns the "included/expanded in" decomposed location of the given FileID.
Represents a diagnostic in a form that can be retained until its corresponding source manager is dest...
Definition: Diagnostic.h:1695
unsigned getID() const
Definition: Diagnostic.h:1716
range_iterator range_begin() const
Definition: Diagnostic.h:1725
DiagnosticsEngine::Level getLevel() const
Definition: Diagnostic.h:1717
fixit_iterator fixit_begin() const
Definition: Diagnostic.h:1733
const FullSourceLoc & getLocation() const
Definition: Diagnostic.h:1718
range_iterator range_end() const
Definition: Diagnostic.h:1726
StringRef getMessage() const
Definition: Diagnostic.h:1719
fixit_iterator fixit_end() const
Definition: Diagnostic.h:1734
The streaming interface shared between DiagnosticBuilder and PartialDiagnostic.
Definition: Diagnostic.h:1115
void AddString(StringRef V) const
Definition: Diagnostic.h:1199
Severity
Enum values that allow the client to map NOTEs, WARNINGs, and EXTENSIONs to either Ignore (nothing),...
Definition: DiagnosticIDs.h:85
@ Warning
Present this diagnostic as a warning.
@ Fatal
Present this diagnostic as a fatal error.
@ Error
Present this diagnostic as an error.
@ Remark
Present this diagnostic as a remark.
@ Ignored
Do not present this diagnostic, ignore it.
Flavor
Flavors of diagnostics we can emit.
Definition: DiagnosticIDs.h:96
@ WarningOrError
A diagnostic that indicates a problem or potential problem.
const char * getTokenName(TokenKind Kind) LLVM_READNONE
Determines the name of a token as used within the front end.
Definition: TokenKinds.cpp:24
const char * getKeywordSpelling(TokenKind Kind) LLVM_READNONE
Determines the spelling of simple keyword and contextual keyword tokens like 'int' and 'dynamic_cast'...
Definition: TokenKinds.cpp:40
TokenKind
Provides a simple uniform namespace for tokens from all C languages.
Definition: TokenKinds.h:25
const char * getPunctuatorSpelling(TokenKind Kind) LLVM_READNONE
Determines the spelling of simple punctuation tokens like '!' or '', and returns NULL for literal and...
Definition: TokenKinds.cpp:31
The JSON file list parser is used to communicate input to InstallAPI.
LLVM_READONLY bool isPrintable(unsigned char c)
Return true if this character is an ASCII printable character; that is, a character that should take ...
Definition: CharInfo.h:160
const StreamingDiagnostic & operator<<(const StreamingDiagnostic &DB, const ASTContext::SectionInfo &Section)
Insertion operator for diagnostics.
@ Result
The result type of a method or function.
llvm::StringRef getNullabilitySpelling(NullabilityKind kind, bool isContextSensitive=false)
Retrieve the spelling of the given nullability kind.
void EscapeStringForDiagnostic(StringRef Str, SmallVectorImpl< char > &OutStr)
EscapeStringForDiagnostic - Append Str to the diagnostic buffer, escaping non-printable characters an...
Definition: Diagnostic.cpp:806
LLVM_READONLY bool isDigit(unsigned char c)
Return true if this character is an ASCII digit: [0-9].
Definition: CharInfo.h:114
LLVM_READONLY bool isWhitespace(unsigned char c)
Return true if this character is horizontal or vertical ASCII whitespace: ' ', '\t',...
Definition: CharInfo.h:108
std::pair< NullabilityKind, bool > DiagNullabilityKind
A nullability kind paired with a bit indicating whether it used a context-sensitive keyword.
Definition: Diagnostic.h:1542
LLVM_READONLY bool isPunctuation(unsigned char c)
Return true if this character is an ASCII punctuation character.
Definition: CharInfo.h:152
__INTPTR_TYPE__ intptr_t
A signed integer type with the property that any valid pointer to void can be converted to this type,...
SmallVector< CharSourceRange, 8 > DiagRanges
The list of ranges added to this diagnostic.
Definition: Diagnostic.h:177
unsigned char NumDiagArgs
The number of entries in Arguments.
Definition: Diagnostic.h:159
SmallVector< FixItHint, 6 > FixItHints
If valid, provides a hint with some code to insert, remove, or modify at a particular position.
Definition: Diagnostic.h:181