1 //===---- VerifyDiagnosticConsumer.cpp - Verifying Diagnostic Client ------===//
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 is a concrete diagnostic client, which buffers the diagnostic messages.
12 //===----------------------------------------------------------------------===//
14 #include "clang/Frontend/VerifyDiagnosticConsumer.h"
15 #include "clang/Basic/CharInfo.h"
16 #include "clang/Basic/FileManager.h"
17 #include "clang/Frontend/FrontendDiagnostic.h"
18 #include "clang/Frontend/TextDiagnosticBuffer.h"
19 #include "clang/Lex/HeaderSearch.h"
20 #include "clang/Lex/Preprocessor.h"
21 #include "llvm/ADT/SmallString.h"
22 #include "llvm/Support/Regex.h"
23 #include "llvm/Support/raw_ostream.h"
25 using namespace clang;
26 typedef VerifyDiagnosticConsumer::Directive Directive;
27 typedef VerifyDiagnosticConsumer::DirectiveList DirectiveList;
28 typedef VerifyDiagnosticConsumer::ExpectedData ExpectedData;
30 VerifyDiagnosticConsumer::VerifyDiagnosticConsumer(DiagnosticsEngine &Diags_)
32 PrimaryClient(Diags.getClient()), PrimaryClientOwner(Diags.takeClient()),
33 Buffer(new TextDiagnosticBuffer()), CurrentPreprocessor(nullptr),
34 LangOpts(nullptr), SrcManager(nullptr), ActiveSourceFiles(0),
35 Status(HasNoDirectives)
37 if (Diags.hasSourceManager())
38 setSourceManager(Diags.getSourceManager());
41 VerifyDiagnosticConsumer::~VerifyDiagnosticConsumer() {
42 assert(!ActiveSourceFiles && "Incomplete parsing of source files!");
43 assert(!CurrentPreprocessor && "CurrentPreprocessor should be invalid!");
46 assert(!Diags.ownsClient() &&
47 "The VerifyDiagnosticConsumer takes over ownership of the client!");
52 class VerifyFileTracker : public PPCallbacks {
53 VerifyDiagnosticConsumer &Verify;
57 VerifyFileTracker(VerifyDiagnosticConsumer &Verify, SourceManager &SM)
58 : Verify(Verify), SM(SM) { }
60 /// \brief Hook into the preprocessor and update the list of parsed
61 /// files when the preprocessor indicates a new file is entered.
62 void FileChanged(SourceLocation Loc, FileChangeReason Reason,
63 SrcMgr::CharacteristicKind FileType,
64 FileID PrevFID) override {
65 Verify.UpdateParsedFileStatus(SM, SM.getFileID(Loc),
66 VerifyDiagnosticConsumer::IsParsed);
69 } // End anonymous namespace.
72 // DiagnosticConsumer interface.
74 void VerifyDiagnosticConsumer::BeginSourceFile(const LangOptions &LangOpts,
75 const Preprocessor *PP) {
76 // Attach comment handler on first invocation.
77 if (++ActiveSourceFiles == 1) {
79 CurrentPreprocessor = PP;
80 this->LangOpts = &LangOpts;
81 setSourceManager(PP->getSourceManager());
82 const_cast<Preprocessor*>(PP)->addCommentHandler(this);
84 // Debug build tracks parsed files.
85 const_cast<Preprocessor*>(PP)->addPPCallbacks(
86 llvm::make_unique<VerifyFileTracker>(*this, *SrcManager));
91 assert((!PP || CurrentPreprocessor == PP) && "Preprocessor changed!");
92 PrimaryClient->BeginSourceFile(LangOpts, PP);
95 void VerifyDiagnosticConsumer::EndSourceFile() {
96 assert(ActiveSourceFiles && "No active source files!");
97 PrimaryClient->EndSourceFile();
99 // Detach comment handler once last active source file completed.
100 if (--ActiveSourceFiles == 0) {
101 if (CurrentPreprocessor)
102 const_cast<Preprocessor*>(CurrentPreprocessor)->removeCommentHandler(this);
104 // Check diagnostics once last file completed.
106 CurrentPreprocessor = nullptr;
111 void VerifyDiagnosticConsumer::HandleDiagnostic(
112 DiagnosticsEngine::Level DiagLevel, const Diagnostic &Info) {
113 if (Info.hasSourceManager()) {
114 // If this diagnostic is for a different source manager, ignore it.
115 if (SrcManager && &Info.getSourceManager() != SrcManager)
118 setSourceManager(Info.getSourceManager());
122 // Debug build tracks unparsed files for possible
123 // unparsed expected-* directives.
125 SourceLocation Loc = Info.getLocation();
127 ParsedStatus PS = IsUnparsed;
129 Loc = SrcManager->getExpansionLoc(Loc);
130 FileID FID = SrcManager->getFileID(Loc);
132 const FileEntry *FE = SrcManager->getFileEntryForID(FID);
133 if (FE && CurrentPreprocessor && SrcManager->isLoadedFileID(FID)) {
134 // If the file is a modules header file it shall not be parsed
135 // for expected-* directives.
136 HeaderSearch &HS = CurrentPreprocessor->getHeaderSearchInfo();
137 if (HS.findModuleForHeader(FE))
138 PS = IsUnparsedNoDirectives;
141 UpdateParsedFileStatus(*SrcManager, FID, PS);
146 // Send the diagnostic to the buffer, we will check it once we reach the end
147 // of the source file (or are destructed).
148 Buffer->HandleDiagnostic(DiagLevel, Info);
151 //===----------------------------------------------------------------------===//
152 // Checking diagnostics implementation.
153 //===----------------------------------------------------------------------===//
155 typedef TextDiagnosticBuffer::DiagList DiagList;
156 typedef TextDiagnosticBuffer::const_iterator const_diag_iterator;
160 /// StandardDirective - Directive with string matching.
162 class StandardDirective : public Directive {
164 StandardDirective(SourceLocation DirectiveLoc, SourceLocation DiagnosticLoc,
165 bool MatchAnyLine, StringRef Text, unsigned Min,
167 : Directive(DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text, Min, Max) { }
169 bool isValid(std::string &Error) override {
170 // all strings are considered valid; even empty ones
174 bool match(StringRef S) override {
175 return S.find(Text) != StringRef::npos;
179 /// RegexDirective - Directive with regular-expression matching.
181 class RegexDirective : public Directive {
183 RegexDirective(SourceLocation DirectiveLoc, SourceLocation DiagnosticLoc,
184 bool MatchAnyLine, StringRef Text, unsigned Min, unsigned Max,
186 : Directive(DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text, Min, Max),
189 bool isValid(std::string &Error) override {
190 return Regex.isValid(Error);
193 bool match(StringRef S) override {
194 return Regex.match(S);
204 ParseHelper(StringRef S)
205 : Begin(S.begin()), End(S.end()), C(Begin), P(Begin), PEnd(nullptr) {}
207 // Return true if string literal is next.
208 bool Next(StringRef S) {
213 return !memcmp(P, S.data(), S.size());
216 // Return true if number is next.
217 // Output N only if number is next.
218 bool Next(unsigned &N) {
221 for (; P < End && P[0] >= '0' && P[0] <= '9'; ++P) {
232 // Return true if string literal is found.
233 // When true, P marks begin-position of S in content.
234 bool Search(StringRef S, bool EnsureStartOfWord = false) {
236 P = std::search(C, End, S.begin(), S.end());
240 if (!EnsureStartOfWord
241 // Check if string literal starts a new word.
242 || P == Begin || isWhitespace(P[-1])
243 // Or it could be preceded by the start of a comment.
244 || (P > (Begin + 1) && (P[-1] == '/' || P[-1] == '*')
247 // Otherwise, skip and search again.
252 // Return true if a CloseBrace that closes the OpenBrace at the current nest
253 // level is found. When true, P marks begin-position of CloseBrace.
254 bool SearchClosingBrace(StringRef OpenBrace, StringRef CloseBrace) {
258 StringRef S(P, End - P);
259 if (S.startswith(OpenBrace)) {
261 P += OpenBrace.size();
262 } else if (S.startswith(CloseBrace)) {
265 PEnd = P + CloseBrace.size();
268 P += CloseBrace.size();
276 // Advance 1-past previous next/search.
277 // Behavior is undefined if previous next/search failed.
283 // Skip zero or more whitespace.
284 void SkipWhitespace() {
285 for (; C < End && isWhitespace(*C); ++C)
289 // Return true if EOF reached.
294 const char * const Begin; // beginning of expected content
295 const char * const End; // end of expected content (1-past)
296 const char *C; // position of next char in content
300 const char *PEnd; // previous next/search subject end (1-past)
303 } // namespace anonymous
305 /// ParseDirective - Go through the comment and see if it indicates expected
306 /// diagnostics. If so, then put them in the appropriate directive list.
308 /// Returns true if any valid directives were found.
309 static bool ParseDirective(StringRef S, ExpectedData *ED, SourceManager &SM,
310 Preprocessor *PP, SourceLocation Pos,
311 VerifyDiagnosticConsumer::DirectiveStatus &Status) {
312 DiagnosticsEngine &Diags = PP ? PP->getDiagnostics() : SM.getDiagnostics();
314 // A single comment may contain multiple directives.
315 bool FoundDirective = false;
316 for (ParseHelper PH(S); !PH.Done();) {
317 // Search for token: expected
318 if (!PH.Search("expected", true))
327 // Next token: { error | warning | note }
328 DirectiveList *DL = nullptr;
329 if (PH.Next("error"))
330 DL = ED ? &ED->Errors : nullptr;
331 else if (PH.Next("warning"))
332 DL = ED ? &ED->Warnings : nullptr;
333 else if (PH.Next("remark"))
334 DL = ED ? &ED->Remarks : nullptr;
335 else if (PH.Next("note"))
336 DL = ED ? &ED->Notes : nullptr;
337 else if (PH.Next("no-diagnostics")) {
338 if (Status == VerifyDiagnosticConsumer::HasOtherExpectedDirectives)
339 Diags.Report(Pos, diag::err_verify_invalid_no_diags)
340 << /*IsExpectedNoDiagnostics=*/true;
342 Status = VerifyDiagnosticConsumer::HasExpectedNoDiagnostics;
348 if (Status == VerifyDiagnosticConsumer::HasExpectedNoDiagnostics) {
349 Diags.Report(Pos, diag::err_verify_invalid_no_diags)
350 << /*IsExpectedNoDiagnostics=*/false;
353 Status = VerifyDiagnosticConsumer::HasOtherExpectedDirectives;
355 // If a directive has been found but we're not interested
356 // in storing the directive information, return now.
360 // Default directive kind.
361 bool RegexKind = false;
362 const char* KindStr = "string";
364 // Next optional token: -
365 if (PH.Next("-re")) {
371 // Next optional token: @
372 SourceLocation ExpectedLoc;
373 bool MatchAnyLine = false;
379 bool FoundPlus = PH.Next("+");
380 if (FoundPlus || PH.Next("-")) {
381 // Relative to current line.
383 bool Invalid = false;
384 unsigned ExpectedLine = SM.getSpellingLineNumber(Pos, &Invalid);
385 if (!Invalid && PH.Next(Line) && (FoundPlus || Line < ExpectedLine)) {
386 if (FoundPlus) ExpectedLine += Line;
387 else ExpectedLine -= Line;
388 ExpectedLoc = SM.translateLineCol(SM.getFileID(Pos), ExpectedLine, 1);
390 } else if (PH.Next(Line)) {
391 // Absolute line number.
393 ExpectedLoc = SM.translateLineCol(SM.getFileID(Pos), Line, 1);
394 } else if (PP && PH.Search(":")) {
395 // Specific source file.
396 StringRef Filename(PH.C, PH.P-PH.C);
399 // Lookup file via Preprocessor, like a #include.
400 const DirectoryLookup *CurDir;
401 const FileEntry *FE =
402 PP->LookupFile(Pos, Filename, false, nullptr, nullptr, CurDir,
403 nullptr, nullptr, nullptr, nullptr);
405 Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
406 diag::err_verify_missing_file) << Filename << KindStr;
410 if (SM.translateFile(FE).isInvalid())
411 SM.createFileID(FE, Pos, SrcMgr::C_User);
413 if (PH.Next(Line) && Line > 0)
414 ExpectedLoc = SM.translateFileLineCol(FE, Line, 1);
415 else if (PH.Next("*")) {
417 ExpectedLoc = SM.translateFileLineCol(FE, 1, 1);
421 if (ExpectedLoc.isInvalid()) {
422 Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
423 diag::err_verify_missing_line) << KindStr;
429 // Skip optional whitespace.
432 // Next optional token: positive integer or a '+'.
437 // A positive integer can be followed by a '+' meaning min
438 // or more, or by a '-' meaning a range from min to max.
440 Max = Directive::MaxCount;
442 } else if (PH.Next("-")) {
444 if (!PH.Next(Max) || Max < Min) {
445 Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
446 diag::err_verify_invalid_range) << KindStr;
453 } else if (PH.Next("+")) {
454 // '+' on its own means "1 or more".
455 Max = Directive::MaxCount;
459 // Skip optional whitespace.
463 if (!PH.Next("{{")) {
464 Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
465 diag::err_verify_missing_start) << KindStr;
469 const char* const ContentBegin = PH.C; // mark content begin
471 // Search for token: }}
472 if (!PH.SearchClosingBrace("{{", "}}")) {
473 Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
474 diag::err_verify_missing_end) << KindStr;
477 const char* const ContentEnd = PH.P; // mark content end
480 // Build directive text; convert \n to newlines.
482 StringRef NewlineStr = "\\n";
483 StringRef Content(ContentBegin, ContentEnd-ContentBegin);
486 while ((FPos = Content.find(NewlineStr, CPos)) != StringRef::npos) {
487 Text += Content.substr(CPos, FPos-CPos);
489 CPos = FPos + NewlineStr.size();
492 Text.assign(ContentBegin, ContentEnd);
494 // Check that regex directives contain at least one regex.
495 if (RegexKind && Text.find("{{") == StringRef::npos) {
496 Diags.Report(Pos.getLocWithOffset(ContentBegin-PH.Begin),
497 diag::err_verify_missing_regex) << Text;
501 // Construct new directive.
502 std::unique_ptr<Directive> D = Directive::create(
503 RegexKind, Pos, ExpectedLoc, MatchAnyLine, Text, Min, Max);
506 if (D->isValid(Error)) {
507 DL->push_back(std::move(D));
508 FoundDirective = true;
510 Diags.Report(Pos.getLocWithOffset(ContentBegin-PH.Begin),
511 diag::err_verify_invalid_content)
516 return FoundDirective;
519 /// HandleComment - Hook into the preprocessor and extract comments containing
520 /// expected errors and warnings.
521 bool VerifyDiagnosticConsumer::HandleComment(Preprocessor &PP,
522 SourceRange Comment) {
523 SourceManager &SM = PP.getSourceManager();
525 // If this comment is for a different source manager, ignore it.
526 if (SrcManager && &SM != SrcManager)
529 SourceLocation CommentBegin = Comment.getBegin();
531 const char *CommentRaw = SM.getCharacterData(CommentBegin);
532 StringRef C(CommentRaw, SM.getCharacterData(Comment.getEnd()) - CommentRaw);
537 // Fold any "\<EOL>" sequences
538 size_t loc = C.find('\\');
539 if (loc == StringRef::npos) {
540 ParseDirective(C, &ED, SM, &PP, CommentBegin, Status);
545 C2.reserve(C.size());
547 for (size_t last = 0;; loc = C.find('\\', last)) {
548 if (loc == StringRef::npos || loc == C.size()) {
549 C2 += C.substr(last);
552 C2 += C.substr(last, loc-last);
555 if (C[last] == '\n' || C[last] == '\r') {
558 // Escape \r\n or \n\r, but not \n\n.
560 if (C[last] == '\n' || C[last] == '\r')
561 if (C[last] != C[last-1])
564 // This was just a normal backslash.
570 ParseDirective(C2, &ED, SM, &PP, CommentBegin, Status);
575 /// \brief Lex the specified source file to determine whether it contains
576 /// any expected-* directives. As a Lexer is used rather than a full-blown
577 /// Preprocessor, directives inside skipped #if blocks will still be found.
579 /// \return true if any directives were found.
580 static bool findDirectives(SourceManager &SM, FileID FID,
581 const LangOptions &LangOpts) {
582 // Create a raw lexer to pull all the comments out of FID.
586 // Create a lexer to lex all the tokens of the main file in raw mode.
587 const llvm::MemoryBuffer *FromFile = SM.getBuffer(FID);
588 Lexer RawLex(FID, FromFile, SM, LangOpts);
590 // Return comments as tokens, this is how we find expected diagnostics.
591 RawLex.SetCommentRetentionState(true);
594 Tok.setKind(tok::comment);
595 VerifyDiagnosticConsumer::DirectiveStatus Status =
596 VerifyDiagnosticConsumer::HasNoDirectives;
597 while (Tok.isNot(tok::eof)) {
598 RawLex.LexFromRawLexer(Tok);
599 if (!Tok.is(tok::comment)) continue;
601 std::string Comment = RawLex.getSpelling(Tok, SM, LangOpts);
602 if (Comment.empty()) continue;
604 // Find first directive.
605 if (ParseDirective(Comment, nullptr, SM, nullptr, Tok.getLocation(),
613 /// \brief Takes a list of diagnostics that have been generated but not matched
614 /// by an expected-* directive and produces a diagnostic to the user from this.
615 static unsigned PrintUnexpected(DiagnosticsEngine &Diags, SourceManager *SourceMgr,
616 const_diag_iterator diag_begin,
617 const_diag_iterator diag_end,
619 if (diag_begin == diag_end) return 0;
621 SmallString<256> Fmt;
622 llvm::raw_svector_ostream OS(Fmt);
623 for (const_diag_iterator I = diag_begin, E = diag_end; I != E; ++I) {
624 if (I->first.isInvalid() || !SourceMgr)
625 OS << "\n (frontend)";
628 if (const FileEntry *File = SourceMgr->getFileEntryForID(
629 SourceMgr->getFileID(I->first)))
630 OS << " File " << File->getName();
631 OS << " Line " << SourceMgr->getPresumedLineNumber(I->first);
633 OS << ": " << I->second;
636 Diags.Report(diag::err_verify_inconsistent_diags).setForceEmit()
637 << Kind << /*Unexpected=*/true << OS.str();
638 return std::distance(diag_begin, diag_end);
641 /// \brief Takes a list of diagnostics that were expected to have been generated
642 /// but were not and produces a diagnostic to the user from this.
643 static unsigned PrintExpected(DiagnosticsEngine &Diags,
644 SourceManager &SourceMgr,
645 std::vector<Directive *> &DL, const char *Kind) {
649 SmallString<256> Fmt;
650 llvm::raw_svector_ostream OS(Fmt);
651 for (auto *DirPtr : DL) {
652 Directive &D = *DirPtr;
653 OS << "\n File " << SourceMgr.getFilename(D.DiagnosticLoc);
657 OS << " Line " << SourceMgr.getPresumedLineNumber(D.DiagnosticLoc);
658 if (D.DirectiveLoc != D.DiagnosticLoc)
659 OS << " (directive at "
660 << SourceMgr.getFilename(D.DirectiveLoc) << ':'
661 << SourceMgr.getPresumedLineNumber(D.DirectiveLoc) << ')';
662 OS << ": " << D.Text;
665 Diags.Report(diag::err_verify_inconsistent_diags).setForceEmit()
666 << Kind << /*Unexpected=*/false << OS.str();
670 /// \brief Determine whether two source locations come from the same file.
671 static bool IsFromSameFile(SourceManager &SM, SourceLocation DirectiveLoc,
672 SourceLocation DiagnosticLoc) {
673 while (DiagnosticLoc.isMacroID())
674 DiagnosticLoc = SM.getImmediateMacroCallerLoc(DiagnosticLoc);
676 if (SM.isWrittenInSameFile(DirectiveLoc, DiagnosticLoc))
679 const FileEntry *DiagFile = SM.getFileEntryForID(SM.getFileID(DiagnosticLoc));
680 if (!DiagFile && SM.isWrittenInMainFile(DirectiveLoc))
683 return (DiagFile == SM.getFileEntryForID(SM.getFileID(DirectiveLoc)));
686 /// CheckLists - Compare expected to seen diagnostic lists and return the
687 /// the difference between them.
689 static unsigned CheckLists(DiagnosticsEngine &Diags, SourceManager &SourceMgr,
692 const_diag_iterator d2_begin,
693 const_diag_iterator d2_end,
694 bool IgnoreUnexpected) {
695 std::vector<Directive *> LeftOnly;
696 DiagList Right(d2_begin, d2_end);
698 for (auto &Owner : Left) {
699 Directive &D = *Owner;
700 unsigned LineNo1 = SourceMgr.getPresumedLineNumber(D.DiagnosticLoc);
702 for (unsigned i = 0; i < D.Max; ++i) {
703 DiagList::iterator II, IE;
704 for (II = Right.begin(), IE = Right.end(); II != IE; ++II) {
705 if (!D.MatchAnyLine) {
706 unsigned LineNo2 = SourceMgr.getPresumedLineNumber(II->first);
707 if (LineNo1 != LineNo2)
711 if (!IsFromSameFile(SourceMgr, D.DiagnosticLoc, II->first))
714 const std::string &RightText = II->second;
715 if (D.match(RightText))
720 if (i >= D.Min) break;
721 LeftOnly.push_back(&D);
723 // Found. The same cannot be found twice.
728 // Now all that's left in Right are those that were not matched.
729 unsigned num = PrintExpected(Diags, SourceMgr, LeftOnly, Label);
730 if (!IgnoreUnexpected)
731 num += PrintUnexpected(Diags, &SourceMgr, Right.begin(), Right.end(), Label);
735 /// CheckResults - This compares the expected results to those that
736 /// were actually reported. It emits any discrepencies. Return "true" if there
737 /// were problems. Return "false" otherwise.
739 static unsigned CheckResults(DiagnosticsEngine &Diags, SourceManager &SourceMgr,
740 const TextDiagnosticBuffer &Buffer,
742 // We want to capture the delta between what was expected and what was
745 // Expected \ Seen - set expected but not seen
746 // Seen \ Expected - set seen but not expected
747 unsigned NumProblems = 0;
749 const DiagnosticLevelMask DiagMask =
750 Diags.getDiagnosticOptions().getVerifyIgnoreUnexpected();
752 // See if there are error mismatches.
753 NumProblems += CheckLists(Diags, SourceMgr, "error", ED.Errors,
754 Buffer.err_begin(), Buffer.err_end(),
755 bool(DiagnosticLevelMask::Error & DiagMask));
757 // See if there are warning mismatches.
758 NumProblems += CheckLists(Diags, SourceMgr, "warning", ED.Warnings,
759 Buffer.warn_begin(), Buffer.warn_end(),
760 bool(DiagnosticLevelMask::Warning & DiagMask));
762 // See if there are remark mismatches.
763 NumProblems += CheckLists(Diags, SourceMgr, "remark", ED.Remarks,
764 Buffer.remark_begin(), Buffer.remark_end(),
765 bool(DiagnosticLevelMask::Remark & DiagMask));
767 // See if there are note mismatches.
768 NumProblems += CheckLists(Diags, SourceMgr, "note", ED.Notes,
769 Buffer.note_begin(), Buffer.note_end(),
770 bool(DiagnosticLevelMask::Note & DiagMask));
775 void VerifyDiagnosticConsumer::UpdateParsedFileStatus(SourceManager &SM,
778 // Check SourceManager hasn't changed.
779 setSourceManager(SM);
785 const FileEntry *FE = SM.getFileEntryForID(FID);
787 if (PS == IsParsed) {
788 // Move the FileID from the unparsed set to the parsed set.
789 UnparsedFiles.erase(FID);
790 ParsedFiles.insert(std::make_pair(FID, FE));
791 } else if (!ParsedFiles.count(FID) && !UnparsedFiles.count(FID)) {
792 // Add the FileID to the unparsed set if we haven't seen it before.
794 // Check for directives.
795 bool FoundDirectives;
796 if (PS == IsUnparsedNoDirectives)
797 FoundDirectives = false;
799 FoundDirectives = !LangOpts || findDirectives(SM, FID, *LangOpts);
801 // Add the FileID to the unparsed set.
802 UnparsedFiles.insert(std::make_pair(FID,
803 UnparsedFileStatus(FE, FoundDirectives)));
808 void VerifyDiagnosticConsumer::CheckDiagnostics() {
809 // Ensure any diagnostics go to the primary client.
810 DiagnosticConsumer *CurClient = Diags.getClient();
811 std::unique_ptr<DiagnosticConsumer> Owner = Diags.takeClient();
812 Diags.setClient(PrimaryClient, false);
815 // In a debug build, scan through any files that may have been missed
816 // during parsing and issue a fatal error if directives are contained
817 // within these files. If a fatal error occurs, this suggests that
818 // this file is being parsed separately from the main file, in which
819 // case consider moving the directives to the correct place, if this
821 if (UnparsedFiles.size() > 0) {
822 // Generate a cache of parsed FileEntry pointers for alias lookups.
823 llvm::SmallPtrSet<const FileEntry *, 8> ParsedFileCache;
824 for (ParsedFilesMap::iterator I = ParsedFiles.begin(),
825 End = ParsedFiles.end(); I != End; ++I) {
826 if (const FileEntry *FE = I->second)
827 ParsedFileCache.insert(FE);
830 // Iterate through list of unparsed files.
831 for (UnparsedFilesMap::iterator I = UnparsedFiles.begin(),
832 End = UnparsedFiles.end(); I != End; ++I) {
833 const UnparsedFileStatus &Status = I->second;
834 const FileEntry *FE = Status.getFile();
836 // Skip files that have been parsed via an alias.
837 if (FE && ParsedFileCache.count(FE))
840 // Report a fatal error if this file contained directives.
841 if (Status.foundDirectives()) {
842 llvm::report_fatal_error(Twine("-verify directives found after rather"
843 " than during normal parsing of ",
844 StringRef(FE ? FE->getName() : "(unknown)")));
848 // UnparsedFiles has been processed now, so clear it.
849 UnparsedFiles.clear();
854 // Produce an error if no expected-* directives could be found in the
855 // source file(s) processed.
856 if (Status == HasNoDirectives) {
857 Diags.Report(diag::err_verify_no_directives).setForceEmit();
859 Status = HasNoDirectivesReported;
862 // Check that the expected diagnostics occurred.
863 NumErrors += CheckResults(Diags, *SrcManager, *Buffer, ED);
865 const DiagnosticLevelMask DiagMask =
866 ~Diags.getDiagnosticOptions().getVerifyIgnoreUnexpected();
867 if (bool(DiagnosticLevelMask::Error & DiagMask))
868 NumErrors += PrintUnexpected(Diags, nullptr, Buffer->err_begin(),
869 Buffer->err_end(), "error");
870 if (bool(DiagnosticLevelMask::Warning & DiagMask))
871 NumErrors += PrintUnexpected(Diags, nullptr, Buffer->warn_begin(),
872 Buffer->warn_end(), "warn");
873 if (bool(DiagnosticLevelMask::Remark & DiagMask))
874 NumErrors += PrintUnexpected(Diags, nullptr, Buffer->remark_begin(),
875 Buffer->remark_end(), "remark");
876 if (bool(DiagnosticLevelMask::Note & DiagMask))
877 NumErrors += PrintUnexpected(Diags, nullptr, Buffer->note_begin(),
878 Buffer->note_end(), "note");
881 Diags.setClient(CurClient, Owner.release() != nullptr);
883 // Reset the buffer, we have processed all the diagnostics in it.
884 Buffer.reset(new TextDiagnosticBuffer());
888 std::unique_ptr<Directive> Directive::create(bool RegexKind,
889 SourceLocation DirectiveLoc,
890 SourceLocation DiagnosticLoc,
891 bool MatchAnyLine, StringRef Text,
892 unsigned Min, unsigned Max) {
894 return llvm::make_unique<StandardDirective>(DirectiveLoc, DiagnosticLoc,
895 MatchAnyLine, Text, Min, Max);
897 // Parse the directive into a regular expression.
898 std::string RegexStr;
901 if (S.startswith("{{")) {
903 size_t RegexMatchLength = S.find("}}");
904 assert(RegexMatchLength != StringRef::npos);
905 // Append the regex, enclosed in parentheses.
907 RegexStr.append(S.data(), RegexMatchLength);
909 S = S.drop_front(RegexMatchLength + 2);
911 size_t VerbatimMatchLength = S.find("{{");
912 if (VerbatimMatchLength == StringRef::npos)
913 VerbatimMatchLength = S.size();
914 // Escape and append the fixed string.
915 RegexStr += llvm::Regex::escape(S.substr(0, VerbatimMatchLength));
916 S = S.drop_front(VerbatimMatchLength);
920 return llvm::make_unique<RegexDirective>(
921 DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text, Min, Max, RegexStr);