clang  7.0.0svn
DiagnosticRenderer.cpp
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1 //===- DiagnosticRenderer.cpp - Diagnostic Pretty-Printing ----------------===//
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 
11 #include "clang/Basic/Diagnostic.h"
13 #include "clang/Basic/LLVM.h"
16 #include "clang/Edit/Commit.h"
19 #include "clang/Lex/Lexer.h"
20 #include "llvm/ADT/ArrayRef.h"
21 #include "llvm/ADT/DenseMap.h"
22 #include "llvm/ADT/None.h"
23 #include "llvm/ADT/SmallString.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/StringRef.h"
26 #include "llvm/Support/raw_ostream.h"
27 #include <algorithm>
28 #include <cassert>
29 #include <iterator>
30 #include <utility>
31 
32 using namespace clang;
33 
35  DiagnosticOptions *DiagOpts)
36  : LangOpts(LangOpts), DiagOpts(DiagOpts), LastLevel() {}
37 
39 
40 namespace {
41 
42 class FixitReceiver : public edit::EditsReceiver {
43  SmallVectorImpl<FixItHint> &MergedFixits;
44 
45 public:
46  FixitReceiver(SmallVectorImpl<FixItHint> &MergedFixits)
47  : MergedFixits(MergedFixits) {}
48 
49  void insert(SourceLocation loc, StringRef text) override {
50  MergedFixits.push_back(FixItHint::CreateInsertion(loc, text));
51  }
52 
53  void replace(CharSourceRange range, StringRef text) override {
54  MergedFixits.push_back(FixItHint::CreateReplacement(range, text));
55  }
56 };
57 
58 } // namespace
59 
60 static void mergeFixits(ArrayRef<FixItHint> FixItHints,
61  const SourceManager &SM, const LangOptions &LangOpts,
62  SmallVectorImpl<FixItHint> &MergedFixits) {
63  edit::Commit commit(SM, LangOpts);
64  for (const auto &Hint : FixItHints)
65  if (Hint.CodeToInsert.empty()) {
66  if (Hint.InsertFromRange.isValid())
67  commit.insertFromRange(Hint.RemoveRange.getBegin(),
68  Hint.InsertFromRange, /*afterToken=*/false,
69  Hint.BeforePreviousInsertions);
70  else
71  commit.remove(Hint.RemoveRange);
72  } else {
73  if (Hint.RemoveRange.isTokenRange() ||
74  Hint.RemoveRange.getBegin() != Hint.RemoveRange.getEnd())
75  commit.replace(Hint.RemoveRange, Hint.CodeToInsert);
76  else
77  commit.insert(Hint.RemoveRange.getBegin(), Hint.CodeToInsert,
78  /*afterToken=*/false, Hint.BeforePreviousInsertions);
79  }
80 
81  edit::EditedSource Editor(SM, LangOpts);
82  if (Editor.commit(commit)) {
83  FixitReceiver Rec(MergedFixits);
84  Editor.applyRewrites(Rec);
85  }
86 }
87 
90  StringRef Message,
92  ArrayRef<FixItHint> FixItHints,
93  DiagOrStoredDiag D) {
94  assert(Loc.hasManager() || Loc.isInvalid());
95 
96  beginDiagnostic(D, Level);
97 
98  if (!Loc.isValid())
99  // If we have no source location, just emit the diagnostic message.
100  emitDiagnosticMessage(Loc, PresumedLoc(), Level, Message, Ranges, D);
101  else {
102  // Get the ranges into a local array we can hack on.
103  SmallVector<CharSourceRange, 20> MutableRanges(Ranges.begin(),
104  Ranges.end());
105 
106  SmallVector<FixItHint, 8> MergedFixits;
107  if (!FixItHints.empty()) {
108  mergeFixits(FixItHints, Loc.getManager(), LangOpts, MergedFixits);
109  FixItHints = MergedFixits;
110  }
111 
112  for (const auto &Hint : FixItHints)
113  if (Hint.RemoveRange.isValid())
114  MutableRanges.push_back(Hint.RemoveRange);
115 
116  FullSourceLoc UnexpandedLoc = Loc;
117 
118  // Find the ultimate expansion location for the diagnostic.
119  Loc = Loc.getFileLoc();
120 
121  PresumedLoc PLoc = Loc.getPresumedLoc(DiagOpts->ShowPresumedLoc);
122 
123  // First, if this diagnostic is not in the main file, print out the
124  // "included from" lines.
125  emitIncludeStack(Loc, PLoc, Level);
126 
127  // Next, emit the actual diagnostic message and caret.
128  emitDiagnosticMessage(Loc, PLoc, Level, Message, Ranges, D);
129  emitCaret(Loc, Level, MutableRanges, FixItHints);
130 
131  // If this location is within a macro, walk from UnexpandedLoc up to Loc
132  // and produce a macro backtrace.
133  if (UnexpandedLoc.isValid() && UnexpandedLoc.isMacroID()) {
134  emitMacroExpansions(UnexpandedLoc, Level, MutableRanges, FixItHints);
135  }
136  }
137 
138  LastLoc = Loc;
139  LastLevel = Level;
140 
141  endDiagnostic(D, Level);
142 }
143 
145  emitDiagnostic(Diag.getLocation(), Diag.getLevel(), Diag.getMessage(),
146  Diag.getRanges(), Diag.getFixIts(),
147  &Diag);
148 }
149 
150 void DiagnosticRenderer::emitBasicNote(StringRef Message) {
152  Message, None, DiagOrStoredDiag());
153 }
154 
155 /// Prints an include stack when appropriate for a particular
156 /// diagnostic level and location.
157 ///
158 /// This routine handles all the logic of suppressing particular include
159 /// stacks (such as those for notes) and duplicate include stacks when
160 /// repeated warnings occur within the same file. It also handles the logic
161 /// of customizing the formatting and display of the include stack.
162 ///
163 /// \param Loc The diagnostic location.
164 /// \param PLoc The presumed location of the diagnostic location.
165 /// \param Level The diagnostic level of the message this stack pertains to.
166 void DiagnosticRenderer::emitIncludeStack(FullSourceLoc Loc, PresumedLoc PLoc,
168  FullSourceLoc IncludeLoc =
169  PLoc.isInvalid() ? FullSourceLoc()
170  : FullSourceLoc(PLoc.getIncludeLoc(), Loc.getManager());
171 
172  // Skip redundant include stacks altogether.
173  if (LastIncludeLoc == IncludeLoc)
174  return;
175 
176  LastIncludeLoc = IncludeLoc;
177 
178  if (!DiagOpts->ShowNoteIncludeStack && Level == DiagnosticsEngine::Note)
179  return;
180 
181  if (IncludeLoc.isValid())
182  emitIncludeStackRecursively(IncludeLoc);
183  else {
184  emitModuleBuildStack(Loc.getManager());
185  emitImportStack(Loc);
186  }
187 }
188 
189 /// Helper to recursively walk up the include stack and print each layer
190 /// on the way back down.
191 void DiagnosticRenderer::emitIncludeStackRecursively(FullSourceLoc Loc) {
192  if (Loc.isInvalid()) {
193  emitModuleBuildStack(Loc.getManager());
194  return;
195  }
196 
197  PresumedLoc PLoc = Loc.getPresumedLoc(DiagOpts->ShowPresumedLoc);
198  if (PLoc.isInvalid())
199  return;
200 
201  // If this source location was imported from a module, print the module
202  // import stack rather than the
203  // FIXME: We want submodule granularity here.
204  std::pair<FullSourceLoc, StringRef> Imported = Loc.getModuleImportLoc();
205  if (!Imported.second.empty()) {
206  // This location was imported by a module. Emit the module import stack.
207  emitImportStackRecursively(Imported.first, Imported.second);
208  return;
209  }
210 
211  // Emit the other include frames first.
212  emitIncludeStackRecursively(
213  FullSourceLoc(PLoc.getIncludeLoc(), Loc.getManager()));
214 
215  // Emit the inclusion text/note.
216  emitIncludeLocation(Loc, PLoc);
217 }
218 
219 /// Emit the module import stack associated with the current location.
220 void DiagnosticRenderer::emitImportStack(FullSourceLoc Loc) {
221  if (Loc.isInvalid()) {
222  emitModuleBuildStack(Loc.getManager());
223  return;
224  }
225 
226  std::pair<FullSourceLoc, StringRef> NextImportLoc = Loc.getModuleImportLoc();
227  emitImportStackRecursively(NextImportLoc.first, NextImportLoc.second);
228 }
229 
230 /// Helper to recursively walk up the import stack and print each layer
231 /// on the way back down.
232 void DiagnosticRenderer::emitImportStackRecursively(FullSourceLoc Loc,
233  StringRef ModuleName) {
234  if (ModuleName.empty()) {
235  return;
236  }
237 
238  PresumedLoc PLoc = Loc.getPresumedLoc(DiagOpts->ShowPresumedLoc);
239 
240  // Emit the other import frames first.
241  std::pair<FullSourceLoc, StringRef> NextImportLoc = Loc.getModuleImportLoc();
242  emitImportStackRecursively(NextImportLoc.first, NextImportLoc.second);
243 
244  // Emit the inclusion text/note.
245  emitImportLocation(Loc, PLoc, ModuleName);
246 }
247 
248 /// Emit the module build stack, for cases where a module is (re-)built
249 /// on demand.
250 void DiagnosticRenderer::emitModuleBuildStack(const SourceManager &SM) {
252  for (const auto &I : Stack) {
253  emitBuildingModuleLocation(I.second, I.second.getPresumedLoc(
254  DiagOpts->ShowPresumedLoc),
255  I.first);
256  }
257 }
258 
259 /// A recursive function to trace all possible backtrace locations
260 /// to match the \p CaretLocFileID.
261 static SourceLocation
263  FileID CaretFileID,
264  const SmallVectorImpl<FileID> &CommonArgExpansions,
265  bool IsBegin, const SourceManager *SM,
266  bool &IsTokenRange) {
267  assert(SM->getFileID(Loc) == MacroFileID);
268  if (MacroFileID == CaretFileID)
269  return Loc;
270  if (!Loc.isMacroID())
271  return {};
272 
273  CharSourceRange MacroRange, MacroArgRange;
274 
275  if (SM->isMacroArgExpansion(Loc)) {
276  // Only look at the immediate spelling location of this macro argument if
277  // the other location in the source range is also present in that expansion.
278  if (std::binary_search(CommonArgExpansions.begin(),
279  CommonArgExpansions.end(), MacroFileID))
280  MacroRange =
281  CharSourceRange(SM->getImmediateSpellingLoc(Loc), IsTokenRange);
282  MacroArgRange = SM->getImmediateExpansionRange(Loc);
283  } else {
284  MacroRange = SM->getImmediateExpansionRange(Loc);
285  MacroArgRange =
286  CharSourceRange(SM->getImmediateSpellingLoc(Loc), IsTokenRange);
287  }
288 
289  SourceLocation MacroLocation =
290  IsBegin ? MacroRange.getBegin() : MacroRange.getEnd();
291  if (MacroLocation.isValid()) {
292  MacroFileID = SM->getFileID(MacroLocation);
293  bool TokenRange = IsBegin ? IsTokenRange : MacroRange.isTokenRange();
294  MacroLocation =
295  retrieveMacroLocation(MacroLocation, MacroFileID, CaretFileID,
296  CommonArgExpansions, IsBegin, SM, TokenRange);
297  if (MacroLocation.isValid()) {
298  IsTokenRange = TokenRange;
299  return MacroLocation;
300  }
301  }
302 
303  // If we moved the end of the range to an expansion location, we now have
304  // a range of the same kind as the expansion range.
305  if (!IsBegin)
306  IsTokenRange = MacroArgRange.isTokenRange();
307 
308  SourceLocation MacroArgLocation =
309  IsBegin ? MacroArgRange.getBegin() : MacroArgRange.getEnd();
310  MacroFileID = SM->getFileID(MacroArgLocation);
311  return retrieveMacroLocation(MacroArgLocation, MacroFileID, CaretFileID,
312  CommonArgExpansions, IsBegin, SM, IsTokenRange);
313 }
314 
315 /// Walk up the chain of macro expansions and collect the FileIDs identifying the
316 /// expansions.
319  bool IsBegin, const SourceManager *SM) {
320  while (Loc.isMacroID()) {
321  if (SM->isMacroArgExpansion(Loc)) {
322  IDs.push_back(SM->getFileID(Loc));
323  Loc = SM->getImmediateSpellingLoc(Loc);
324  } else {
325  auto ExpRange = SM->getImmediateExpansionRange(Loc);
326  Loc = IsBegin ? ExpRange.getBegin() : ExpRange.getEnd();
327  }
328  }
329 }
330 
331 /// Collect the expansions of the begin and end locations and compute the set
332 /// intersection. Produces a sorted vector of FileIDs in CommonArgExpansions.
335  SmallVectorImpl<FileID> &CommonArgExpansions) {
336  SmallVector<FileID, 4> BeginArgExpansions;
337  SmallVector<FileID, 4> EndArgExpansions;
338  getMacroArgExpansionFileIDs(Begin, BeginArgExpansions, /*IsBegin=*/true, SM);
339  getMacroArgExpansionFileIDs(End, EndArgExpansions, /*IsBegin=*/false, SM);
340  llvm::sort(BeginArgExpansions.begin(), BeginArgExpansions.end());
341  llvm::sort(EndArgExpansions.begin(), EndArgExpansions.end());
342  std::set_intersection(BeginArgExpansions.begin(), BeginArgExpansions.end(),
343  EndArgExpansions.begin(), EndArgExpansions.end(),
344  std::back_inserter(CommonArgExpansions));
345 }
346 
347 // Helper function to fix up source ranges. It takes in an array of ranges,
348 // and outputs an array of ranges where we want to draw the range highlighting
349 // around the location specified by CaretLoc.
350 //
351 // To find locations which correspond to the caret, we crawl the macro caller
352 // chain for the beginning and end of each range. If the caret location
353 // is in a macro expansion, we search each chain for a location
354 // in the same expansion as the caret; otherwise, we crawl to the top of
355 // each chain. Two locations are part of the same macro expansion
356 // iff the FileID is the same.
357 static void
359  SmallVectorImpl<CharSourceRange> &SpellingRanges) {
360  FileID CaretLocFileID = CaretLoc.getFileID();
361 
362  const SourceManager *SM = &CaretLoc.getManager();
363 
364  for (const auto &Range : Ranges) {
365  if (Range.isInvalid())
366  continue;
367 
368  SourceLocation Begin = Range.getBegin(), End = Range.getEnd();
369  bool IsTokenRange = Range.isTokenRange();
370 
371  FileID BeginFileID = SM->getFileID(Begin);
372  FileID EndFileID = SM->getFileID(End);
373 
374  // Find the common parent for the beginning and end of the range.
375 
376  // First, crawl the expansion chain for the beginning of the range.
377  llvm::SmallDenseMap<FileID, SourceLocation> BeginLocsMap;
378  while (Begin.isMacroID() && BeginFileID != EndFileID) {
379  BeginLocsMap[BeginFileID] = Begin;
380  Begin = SM->getImmediateExpansionRange(Begin).getBegin();
381  BeginFileID = SM->getFileID(Begin);
382  }
383 
384  // Then, crawl the expansion chain for the end of the range.
385  if (BeginFileID != EndFileID) {
386  while (End.isMacroID() && !BeginLocsMap.count(EndFileID)) {
387  auto Exp = SM->getImmediateExpansionRange(End);
388  IsTokenRange = Exp.isTokenRange();
389  End = Exp.getEnd();
390  EndFileID = SM->getFileID(End);
391  }
392  if (End.isMacroID()) {
393  Begin = BeginLocsMap[EndFileID];
394  BeginFileID = EndFileID;
395  }
396  }
397 
398  // Do the backtracking.
399  SmallVector<FileID, 4> CommonArgExpansions;
400  computeCommonMacroArgExpansionFileIDs(Begin, End, SM, CommonArgExpansions);
401  Begin = retrieveMacroLocation(Begin, BeginFileID, CaretLocFileID,
402  CommonArgExpansions, /*IsBegin=*/true, SM,
403  IsTokenRange);
404  End = retrieveMacroLocation(End, BeginFileID, CaretLocFileID,
405  CommonArgExpansions, /*IsBegin=*/false, SM,
406  IsTokenRange);
407  if (Begin.isInvalid() || End.isInvalid()) continue;
408 
409  // Return the spelling location of the beginning and end of the range.
410  Begin = SM->getSpellingLoc(Begin);
411  End = SM->getSpellingLoc(End);
412 
413  SpellingRanges.push_back(CharSourceRange(SourceRange(Begin, End),
414  IsTokenRange));
415  }
416 }
417 
418 void DiagnosticRenderer::emitCaret(FullSourceLoc Loc,
421  ArrayRef<FixItHint> Hints) {
422  SmallVector<CharSourceRange, 4> SpellingRanges;
423  mapDiagnosticRanges(Loc, Ranges, SpellingRanges);
424  emitCodeContext(Loc, Level, SpellingRanges, Hints);
425 }
426 
427 /// A helper function for emitMacroExpansion to print the
428 /// macro expansion message
429 void DiagnosticRenderer::emitSingleMacroExpansion(
431  ArrayRef<CharSourceRange> Ranges) {
432  // Find the spelling location for the macro definition. We must use the
433  // spelling location here to avoid emitting a macro backtrace for the note.
434  FullSourceLoc SpellingLoc = Loc.getSpellingLoc();
435 
436  // Map the ranges into the FileID of the diagnostic location.
437  SmallVector<CharSourceRange, 4> SpellingRanges;
438  mapDiagnosticRanges(Loc, Ranges, SpellingRanges);
439 
440  SmallString<100> MessageStorage;
441  llvm::raw_svector_ostream Message(MessageStorage);
442  StringRef MacroName = Lexer::getImmediateMacroNameForDiagnostics(
443  Loc, Loc.getManager(), LangOpts);
444  if (MacroName.empty())
445  Message << "expanded from here";
446  else
447  Message << "expanded from macro '" << MacroName << "'";
448 
449  emitDiagnostic(SpellingLoc, DiagnosticsEngine::Note, Message.str(),
450  SpellingRanges, None);
451 }
452 
453 /// Check that the macro argument location of Loc starts with ArgumentLoc.
454 /// The starting location of the macro expansions is used to differeniate
455 /// different macro expansions.
457  const SourceManager &SM,
458  SourceLocation ArgumentLoc) {
459  SourceLocation MacroLoc;
460  if (SM.isMacroArgExpansion(Loc, &MacroLoc)) {
461  if (ArgumentLoc == MacroLoc) return true;
462  }
463 
464  return false;
465 }
466 
467 /// Check if all the locations in the range have the same macro argument
468 /// expansion, and that the expansion starts with ArgumentLoc.
470  const SourceManager &SM,
471  SourceLocation ArgumentLoc) {
472  SourceLocation BegLoc = Range.getBegin(), EndLoc = Range.getEnd();
473  while (BegLoc != EndLoc) {
474  if (!checkLocForMacroArgExpansion(BegLoc, SM, ArgumentLoc))
475  return false;
476  BegLoc.getLocWithOffset(1);
477  }
478 
479  return checkLocForMacroArgExpansion(BegLoc, SM, ArgumentLoc);
480 }
481 
482 /// A helper function to check if the current ranges are all inside the same
483 /// macro argument expansion as Loc.
485  ArrayRef<CharSourceRange> Ranges) {
486  assert(Loc.isMacroID() && "Must be a macro expansion!");
487 
488  SmallVector<CharSourceRange, 4> SpellingRanges;
489  mapDiagnosticRanges(Loc, Ranges, SpellingRanges);
490 
491  /// Count all valid ranges.
492  unsigned ValidCount = 0;
493  for (const auto &Range : Ranges)
494  if (Range.isValid())
495  ValidCount++;
496 
497  if (ValidCount > SpellingRanges.size())
498  return false;
499 
500  /// To store the source location of the argument location.
501  FullSourceLoc ArgumentLoc;
502 
503  /// Set the ArgumentLoc to the beginning location of the expansion of Loc
504  /// so to check if the ranges expands to the same beginning location.
505  if (!Loc.isMacroArgExpansion(&ArgumentLoc))
506  return false;
507 
508  for (const auto &Range : SpellingRanges)
509  if (!checkRangeForMacroArgExpansion(Range, Loc.getManager(), ArgumentLoc))
510  return false;
511 
512  return true;
513 }
514 
515 /// Recursively emit notes for each macro expansion and caret
516 /// diagnostics where appropriate.
517 ///
518 /// Walks up the macro expansion stack printing expansion notes, the code
519 /// snippet, caret, underlines and FixItHint display as appropriate at each
520 /// level.
521 ///
522 /// \param Loc The location for this caret.
523 /// \param Level The diagnostic level currently being emitted.
524 /// \param Ranges The underlined ranges for this code snippet.
525 /// \param Hints The FixIt hints active for this diagnostic.
526 void DiagnosticRenderer::emitMacroExpansions(FullSourceLoc Loc,
529  ArrayRef<FixItHint> Hints) {
530  assert(Loc.isValid() && "must have a valid source location here");
531  const SourceManager &SM = Loc.getManager();
532  SourceLocation L = Loc;
533 
534  // Produce a stack of macro backtraces.
535  SmallVector<SourceLocation, 8> LocationStack;
536  unsigned IgnoredEnd = 0;
537  while (L.isMacroID()) {
538  // If this is the expansion of a macro argument, point the caret at the
539  // use of the argument in the definition of the macro, not the expansion.
540  if (SM.isMacroArgExpansion(L))
541  LocationStack.push_back(SM.getImmediateExpansionRange(L).getBegin());
542  else
543  LocationStack.push_back(L);
544 
546  IgnoredEnd = LocationStack.size();
547 
548  L = SM.getImmediateMacroCallerLoc(L);
549 
550  // Once the location no longer points into a macro, try stepping through
551  // the last found location. This sometimes produces additional useful
552  // backtraces.
553  if (L.isFileID())
554  L = SM.getImmediateMacroCallerLoc(LocationStack.back());
555  assert(L.isValid() && "must have a valid source location here");
556  }
557 
558  LocationStack.erase(LocationStack.begin(),
559  LocationStack.begin() + IgnoredEnd);
560 
561  unsigned MacroDepth = LocationStack.size();
562  unsigned MacroLimit = DiagOpts->MacroBacktraceLimit;
563  if (MacroDepth <= MacroLimit || MacroLimit == 0) {
564  for (auto I = LocationStack.rbegin(), E = LocationStack.rend();
565  I != E; ++I)
566  emitSingleMacroExpansion(FullSourceLoc(*I, SM), Level, Ranges);
567  return;
568  }
569 
570  unsigned MacroStartMessages = MacroLimit / 2;
571  unsigned MacroEndMessages = MacroLimit / 2 + MacroLimit % 2;
572 
573  for (auto I = LocationStack.rbegin(),
574  E = LocationStack.rbegin() + MacroStartMessages;
575  I != E; ++I)
576  emitSingleMacroExpansion(FullSourceLoc(*I, SM), Level, Ranges);
577 
578  SmallString<200> MessageStorage;
579  llvm::raw_svector_ostream Message(MessageStorage);
580  Message << "(skipping " << (MacroDepth - MacroLimit)
581  << " expansions in backtrace; use -fmacro-backtrace-limit=0 to "
582  "see all)";
583  emitBasicNote(Message.str());
584 
585  for (auto I = LocationStack.rend() - MacroEndMessages,
586  E = LocationStack.rend();
587  I != E; ++I)
588  emitSingleMacroExpansion(FullSourceLoc(*I, SM), Level, Ranges);
589 }
590 
592 
594  PresumedLoc PLoc) {
595  // Generate a note indicating the include location.
596  SmallString<200> MessageStorage;
597  llvm::raw_svector_ostream Message(MessageStorage);
598  Message << "in file included from " << PLoc.getFilename() << ':'
599  << PLoc.getLine() << ":";
600  emitNote(Loc, Message.str());
601 }
602 
604  PresumedLoc PLoc,
605  StringRef ModuleName) {
606  // Generate a note indicating the include location.
607  SmallString<200> MessageStorage;
608  llvm::raw_svector_ostream Message(MessageStorage);
609  Message << "in module '" << ModuleName;
610  if (PLoc.isValid())
611  Message << "' imported from " << PLoc.getFilename() << ':'
612  << PLoc.getLine();
613  Message << ":";
614  emitNote(Loc, Message.str());
615 }
616 
618  PresumedLoc PLoc,
619  StringRef ModuleName) {
620  // Generate a note indicating the include location.
621  SmallString<200> MessageStorage;
622  llvm::raw_svector_ostream Message(MessageStorage);
623  if (PLoc.isValid())
624  Message << "while building module '" << ModuleName << "' imported from "
625  << PLoc.getFilename() << ':' << PLoc.getLine() << ":";
626  else
627  Message << "while building module '" << ModuleName << "':";
628  emitNote(Loc, Message.str());
629 }
bool remove(CharSourceRange range)
Definition: Commit.cpp:92
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.
SourceLocation getLocWithOffset(int Offset) const
Return a source location with the specified offset from this SourceLocation.
void emitImportLocation(FullSourceLoc Loc, PresumedLoc PLoc, StringRef ModuleName) override
virtual void emitCodeContext(FullSourceLoc Loc, DiagnosticsEngine::Level Level, SmallVectorImpl< CharSourceRange > &Ranges, ArrayRef< FixItHint > Hints)=0
static void getMacroArgExpansionFileIDs(SourceLocation Loc, SmallVectorImpl< FileID > &IDs, bool IsBegin, const SourceManager *SM)
Walk up the chain of macro expansions and collect the FileIDs identifying the expansions.
Defines the SourceManager interface.
Represents a diagnostic in a form that can be retained until its corresponding source manager is dest...
Definition: Diagnostic.h:1436
void emitStoredDiagnostic(StoredDiagnostic &Diag)
llvm::PointerUnion< const Diagnostic *, const StoredDiagnostic * > DiagOrStoredDiag
bool insertFromRange(SourceLocation loc, CharSourceRange range, bool afterToken=false, bool beforePreviousInsertions=false)
Definition: Commit.cpp:65
const LangOptions & LangOpts
static bool checkRangeForMacroArgExpansion(CharSourceRange Range, const SourceManager &SM, SourceLocation ArgumentLoc)
Check if all the locations in the range have the same macro argument expansion, and that the expansio...
static void computeCommonMacroArgExpansionFileIDs(SourceLocation Begin, SourceLocation End, const SourceManager *SM, SmallVectorImpl< FileID > &CommonArgExpansions)
Collect the expansions of the begin and end locations and compute the set intersection.
virtual void emitBuildingModuleLocation(FullSourceLoc Loc, PresumedLoc PLoc, StringRef ModuleName)=0
void emitIncludeLocation(FullSourceLoc Loc, PresumedLoc PLoc) override
FileID getFileID() const
static bool checkRangesForMacroArgExpansion(FullSourceLoc Loc, ArrayRef< CharSourceRange > Ranges)
A helper function to check if the current ranges are all inside the same macro argument expansion as ...
bool insert(SourceLocation loc, StringRef text, bool afterToken=false, bool beforePreviousInsertions=false)
Definition: Commit.cpp:49
SourceLocation getBegin() const
FullSourceLoc getFileLoc() const
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:50
virtual void emitImportLocation(FullSourceLoc Loc, PresumedLoc PLoc, StringRef ModuleName)=0
bool replace(CharSourceRange range, StringRef text)
Definition: Commit.cpp:117
ModuleBuildStack getModuleBuildStack() const
Retrieve the module build stack.
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
void emitDiagnostic(FullSourceLoc Loc, DiagnosticsEngine::Level Level, StringRef Message, ArrayRef< CharSourceRange > Ranges, ArrayRef< FixItHint > FixItHints, DiagOrStoredDiag D=(Diagnostic *) nullptr)
Emit a diagnostic.
DiagnosticsEngine::Level LastLevel
The level of the last diagnostic emitted.
ArrayRef< CharSourceRange > getRanges() const
Definition: Diagnostic.h:1470
Defines the Diagnostic-related interfaces.
PresumedLoc getPresumedLoc(bool UseLineDirectives=true) const
SourceLocation getSpellingLoc(SourceLocation Loc) const
Given a SourceLocation object, return the spelling location referenced by the ID. ...
StringRef getMessage() const
Definition: Diagnostic.h:1460
bool isValid() const
bool hasManager() const
SourceLocation getImmediateSpellingLoc(SourceLocation Loc) const
Given a SourceLocation object, return the spelling location referenced by the ID. ...
SourceLocation End
bool isMacroArgExpansion(FullSourceLoc *StartLoc=nullptr) const
Represents a character-granular source range.
DiagnosticsEngine::Level getLevel() const
Definition: Diagnostic.h:1458
bool isInvalid() const
Return true if this object is invalid or uninitialized.
ArrayRef< FixItHint > getFixIts() const
Definition: Diagnostic.h:1480
unsigned getLine() const
Return the presumed line number of this location.
static bool checkLocForMacroArgExpansion(SourceLocation Loc, const SourceManager &SM, SourceLocation ArgumentLoc)
Check that the macro argument location of Loc starts with ArgumentLoc.
const SourceManager & getManager() const
SourceLocation Begin
CharSourceRange getImmediateExpansionRange(SourceLocation Loc) const
Return the start/end of the expansion information for an expansion location.
IntrusiveRefCntPtr< DiagnosticOptions > DiagOpts
Represents an unpacked "presumed" location which can be presented to the user.
const SourceManager & SM
Definition: Format.cpp:1468
virtual void emitDiagnosticMessage(FullSourceLoc Loc, PresumedLoc PLoc, DiagnosticsEngine::Level Level, StringRef Message, ArrayRef< CharSourceRange > Ranges, DiagOrStoredDiag Info)=0
const char * getFilename() const
Return the presumed filename of this location.
Encodes a location in the source.
Options for controlling the compiler diagnostics engine.
virtual void beginDiagnostic(DiagOrStoredDiag D, DiagnosticsEngine::Level Level)
static void mapDiagnosticRanges(FullSourceLoc CaretLoc, ArrayRef< CharSourceRange > Ranges, SmallVectorImpl< CharSourceRange > &SpellingRanges)
std::pair< FullSourceLoc, StringRef > getModuleImportLoc() const
DiagnosticRenderer(const LangOptions &LangOpts, DiagnosticOptions *DiagOpts)
static StringRef getImmediateMacroNameForDiagnostics(SourceLocation Loc, const SourceManager &SM, const LangOptions &LangOpts)
Retrieve the name of the immediate macro expansion.
Definition: Lexer.cpp:1015
bool isTokenRange() const
Return true if the end of this range specifies the start of the last token.
An opaque identifier used by SourceManager which refers to a source file (MemoryBuffer) along with it...
SourceLocation LastLoc
The location of the previous diagnostic if known.
Dataflow Directional Tag Classes.
bool isValid() const
Return true if this is a valid SourceLocation object.
SourceLocation LastIncludeLoc
The location of the last include whose stack was printed if known.
const FullSourceLoc & getLocation() const
Definition: Diagnostic.h:1459
virtual void endDiagnostic(DiagOrStoredDiag D, DiagnosticsEngine::Level Level)
virtual void emitIncludeLocation(FullSourceLoc Loc, PresumedLoc PLoc)=0
static void mergeFixits(ArrayRef< FixItHint > FixItHints, const SourceManager &SM, const LangOptions &LangOpts, SmallVectorImpl< FixItHint > &MergedFixits)
FileID getFileID(SourceLocation SpellingLoc) const
Return the FileID for a SourceLocation.
bool isMacroArgExpansion(SourceLocation Loc, SourceLocation *StartLoc=nullptr) const
Tests whether the given source location represents a macro argument&#39;s expansion into the function-lik...
bool commit(const Commit &commit)
SourceLocation getEnd() const
static FixItHint CreateInsertion(SourceLocation InsertionLoc, StringRef Code, bool BeforePreviousInsertions=false)
Create a code modification hint that inserts the given code string at a specific location.
Definition: Diagnostic.h:92
void applyRewrites(EditsReceiver &receiver, bool adjustRemovals=true)
Defines the clang::SourceLocation class and associated facilities.
Level
The level of the diagnostic, after it has been through mapping.
Definition: Diagnostic.h:152
static FixItHint CreateReplacement(CharSourceRange RemoveRange, StringRef Code)
Create a code modification hint that replaces the given source range with the given code string...
Definition: Diagnostic.h:129
FullSourceLoc getSpellingLoc() const
A SourceLocation and its associated SourceManager.
void emitBuildingModuleLocation(FullSourceLoc Loc, PresumedLoc PLoc, StringRef ModuleName) override
static SourceLocation retrieveMacroLocation(SourceLocation Loc, FileID MacroFileID, FileID CaretFileID, const SmallVectorImpl< FileID > &CommonArgExpansions, bool IsBegin, const SourceManager *SM, bool &IsTokenRange)
A recursive function to trace all possible backtrace locations to match the CaretLocFileID.
A trivial tuple used to represent a source range.
SourceLocation getIncludeLoc() const
Return the presumed include location of this location.
This class handles loading and caching of source files into memory.