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diff --git a/contrib/llvm/tools/clang/lib/Frontend/VerifyDiagnosticConsumer.cpp b/contrib/llvm/tools/clang/lib/Frontend/VerifyDiagnosticConsumer.cpp
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+//===---- VerifyDiagnosticConsumer.cpp - Verifying Diagnostic Client ------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a concrete diagnostic client, which buffers the diagnostic messages.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/VerifyDiagnosticConsumer.h"
+#include "clang/Basic/CharInfo.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Frontend/TextDiagnosticBuffer.h"
+#include "clang/Lex/HeaderSearch.h"
+#include "clang/Lex/Preprocessor.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/Regex.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace clang;
+typedef VerifyDiagnosticConsumer::Directive Directive;
+typedef VerifyDiagnosticConsumer::DirectiveList DirectiveList;
+typedef VerifyDiagnosticConsumer::ExpectedData ExpectedData;
+
+VerifyDiagnosticConsumer::VerifyDiagnosticConsumer(DiagnosticsEngine &Diags_)
+ : Diags(Diags_),
+ PrimaryClient(Diags.getClient()), PrimaryClientOwner(Diags.takeClient()),
+ Buffer(new TextDiagnosticBuffer()), CurrentPreprocessor(nullptr),
+ LangOpts(nullptr), SrcManager(nullptr), ActiveSourceFiles(0),
+ Status(HasNoDirectives)
+{
+ if (Diags.hasSourceManager())
+ setSourceManager(Diags.getSourceManager());
+}
+
+VerifyDiagnosticConsumer::~VerifyDiagnosticConsumer() {
+ assert(!ActiveSourceFiles && "Incomplete parsing of source files!");
+ assert(!CurrentPreprocessor && "CurrentPreprocessor should be invalid!");
+ SrcManager = nullptr;
+ CheckDiagnostics();
+ Diags.takeClient().release();
+}
+
+#ifndef NDEBUG
+namespace {
+class VerifyFileTracker : public PPCallbacks {
+ VerifyDiagnosticConsumer &Verify;
+ SourceManager &SM;
+
+public:
+ VerifyFileTracker(VerifyDiagnosticConsumer &Verify, SourceManager &SM)
+ : Verify(Verify), SM(SM) { }
+
+ /// \brief Hook into the preprocessor and update the list of parsed
+ /// files when the preprocessor indicates a new file is entered.
+ virtual void FileChanged(SourceLocation Loc, FileChangeReason Reason,
+ SrcMgr::CharacteristicKind FileType,
+ FileID PrevFID) {
+ Verify.UpdateParsedFileStatus(SM, SM.getFileID(Loc),
+ VerifyDiagnosticConsumer::IsParsed);
+ }
+};
+} // End anonymous namespace.
+#endif
+
+// DiagnosticConsumer interface.
+
+void VerifyDiagnosticConsumer::BeginSourceFile(const LangOptions &LangOpts,
+ const Preprocessor *PP) {
+ // Attach comment handler on first invocation.
+ if (++ActiveSourceFiles == 1) {
+ if (PP) {
+ CurrentPreprocessor = PP;
+ this->LangOpts = &LangOpts;
+ setSourceManager(PP->getSourceManager());
+ const_cast<Preprocessor*>(PP)->addCommentHandler(this);
+#ifndef NDEBUG
+ // Debug build tracks parsed files.
+ const_cast<Preprocessor*>(PP)->addPPCallbacks(
+ llvm::make_unique<VerifyFileTracker>(*this, *SrcManager));
+#endif
+ }
+ }
+
+ assert((!PP || CurrentPreprocessor == PP) && "Preprocessor changed!");
+ PrimaryClient->BeginSourceFile(LangOpts, PP);
+}
+
+void VerifyDiagnosticConsumer::EndSourceFile() {
+ assert(ActiveSourceFiles && "No active source files!");
+ PrimaryClient->EndSourceFile();
+
+ // Detach comment handler once last active source file completed.
+ if (--ActiveSourceFiles == 0) {
+ if (CurrentPreprocessor)
+ const_cast<Preprocessor*>(CurrentPreprocessor)->removeCommentHandler(this);
+
+ // Check diagnostics once last file completed.
+ CheckDiagnostics();
+ CurrentPreprocessor = nullptr;
+ LangOpts = nullptr;
+ }
+}
+
+void VerifyDiagnosticConsumer::HandleDiagnostic(
+ DiagnosticsEngine::Level DiagLevel, const Diagnostic &Info) {
+ if (Info.hasSourceManager()) {
+ // If this diagnostic is for a different source manager, ignore it.
+ if (SrcManager && &Info.getSourceManager() != SrcManager)
+ return;
+
+ setSourceManager(Info.getSourceManager());
+ }
+
+#ifndef NDEBUG
+ // Debug build tracks unparsed files for possible
+ // unparsed expected-* directives.
+ if (SrcManager) {
+ SourceLocation Loc = Info.getLocation();
+ if (Loc.isValid()) {
+ ParsedStatus PS = IsUnparsed;
+
+ Loc = SrcManager->getExpansionLoc(Loc);
+ FileID FID = SrcManager->getFileID(Loc);
+
+ const FileEntry *FE = SrcManager->getFileEntryForID(FID);
+ if (FE && CurrentPreprocessor && SrcManager->isLoadedFileID(FID)) {
+ // If the file is a modules header file it shall not be parsed
+ // for expected-* directives.
+ HeaderSearch &HS = CurrentPreprocessor->getHeaderSearchInfo();
+ if (HS.findModuleForHeader(FE))
+ PS = IsUnparsedNoDirectives;
+ }
+
+ UpdateParsedFileStatus(*SrcManager, FID, PS);
+ }
+ }
+#endif
+
+ // Send the diagnostic to the buffer, we will check it once we reach the end
+ // of the source file (or are destructed).
+ Buffer->HandleDiagnostic(DiagLevel, Info);
+}
+
+//===----------------------------------------------------------------------===//
+// Checking diagnostics implementation.
+//===----------------------------------------------------------------------===//
+
+typedef TextDiagnosticBuffer::DiagList DiagList;
+typedef TextDiagnosticBuffer::const_iterator const_diag_iterator;
+
+namespace {
+
+/// StandardDirective - Directive with string matching.
+///
+class StandardDirective : public Directive {
+public:
+ StandardDirective(SourceLocation DirectiveLoc, SourceLocation DiagnosticLoc,
+ bool MatchAnyLine, StringRef Text, unsigned Min,
+ unsigned Max)
+ : Directive(DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text, Min, Max) { }
+
+ bool isValid(std::string &Error) override {
+ // all strings are considered valid; even empty ones
+ return true;
+ }
+
+ bool match(StringRef S) override {
+ return S.find(Text) != StringRef::npos;
+ }
+};
+
+/// RegexDirective - Directive with regular-expression matching.
+///
+class RegexDirective : public Directive {
+public:
+ RegexDirective(SourceLocation DirectiveLoc, SourceLocation DiagnosticLoc,
+ bool MatchAnyLine, StringRef Text, unsigned Min, unsigned Max,
+ StringRef RegexStr)
+ : Directive(DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text, Min, Max),
+ Regex(RegexStr) { }
+
+ bool isValid(std::string &Error) override {
+ if (Regex.isValid(Error))
+ return true;
+ return false;
+ }
+
+ bool match(StringRef S) override {
+ return Regex.match(S);
+ }
+
+private:
+ llvm::Regex Regex;
+};
+
+class ParseHelper
+{
+public:
+ ParseHelper(StringRef S)
+ : Begin(S.begin()), End(S.end()), C(Begin), P(Begin), PEnd(nullptr) {}
+
+ // Return true if string literal is next.
+ bool Next(StringRef S) {
+ P = C;
+ PEnd = C + S.size();
+ if (PEnd > End)
+ return false;
+ return !memcmp(P, S.data(), S.size());
+ }
+
+ // Return true if number is next.
+ // Output N only if number is next.
+ bool Next(unsigned &N) {
+ unsigned TMP = 0;
+ P = C;
+ for (; P < End && P[0] >= '0' && P[0] <= '9'; ++P) {
+ TMP *= 10;
+ TMP += P[0] - '0';
+ }
+ if (P == C)
+ return false;
+ PEnd = P;
+ N = TMP;
+ return true;
+ }
+
+ // Return true if string literal is found.
+ // When true, P marks begin-position of S in content.
+ bool Search(StringRef S, bool EnsureStartOfWord = false) {
+ do {
+ P = std::search(C, End, S.begin(), S.end());
+ PEnd = P + S.size();
+ if (P == End)
+ break;
+ if (!EnsureStartOfWord
+ // Check if string literal starts a new word.
+ || P == Begin || isWhitespace(P[-1])
+ // Or it could be preceded by the start of a comment.
+ || (P > (Begin + 1) && (P[-1] == '/' || P[-1] == '*')
+ && P[-2] == '/'))
+ return true;
+ // Otherwise, skip and search again.
+ } while (Advance());
+ return false;
+ }
+
+ // Return true if a CloseBrace that closes the OpenBrace at the current nest
+ // level is found. When true, P marks begin-position of CloseBrace.
+ bool SearchClosingBrace(StringRef OpenBrace, StringRef CloseBrace) {
+ unsigned Depth = 1;
+ P = C;
+ while (P < End) {
+ StringRef S(P, End - P);
+ if (S.startswith(OpenBrace)) {
+ ++Depth;
+ P += OpenBrace.size();
+ } else if (S.startswith(CloseBrace)) {
+ --Depth;
+ if (Depth == 0) {
+ PEnd = P + CloseBrace.size();
+ return true;
+ }
+ P += CloseBrace.size();
+ } else {
+ ++P;
+ }
+ }
+ return false;
+ }
+
+ // Advance 1-past previous next/search.
+ // Behavior is undefined if previous next/search failed.
+ bool Advance() {
+ C = PEnd;
+ return C < End;
+ }
+
+ // Skip zero or more whitespace.
+ void SkipWhitespace() {
+ for (; C < End && isWhitespace(*C); ++C)
+ ;
+ }
+
+ // Return true if EOF reached.
+ bool Done() {
+ return !(C < End);
+ }
+
+ const char * const Begin; // beginning of expected content
+ const char * const End; // end of expected content (1-past)
+ const char *C; // position of next char in content
+ const char *P;
+
+private:
+ const char *PEnd; // previous next/search subject end (1-past)
+};
+
+} // namespace anonymous
+
+/// ParseDirective - Go through the comment and see if it indicates expected
+/// diagnostics. If so, then put them in the appropriate directive list.
+///
+/// Returns true if any valid directives were found.
+static bool ParseDirective(StringRef S, ExpectedData *ED, SourceManager &SM,
+ Preprocessor *PP, SourceLocation Pos,
+ VerifyDiagnosticConsumer::DirectiveStatus &Status) {
+ DiagnosticsEngine &Diags = PP ? PP->getDiagnostics() : SM.getDiagnostics();
+
+ // A single comment may contain multiple directives.
+ bool FoundDirective = false;
+ for (ParseHelper PH(S); !PH.Done();) {
+ // Search for token: expected
+ if (!PH.Search("expected", true))
+ break;
+ PH.Advance();
+
+ // Next token: -
+ if (!PH.Next("-"))
+ continue;
+ PH.Advance();
+
+ // Next token: { error | warning | note }
+ DirectiveList *DL = nullptr;
+ if (PH.Next("error"))
+ DL = ED ? &ED->Errors : nullptr;
+ else if (PH.Next("warning"))
+ DL = ED ? &ED->Warnings : nullptr;
+ else if (PH.Next("remark"))
+ DL = ED ? &ED->Remarks : nullptr;
+ else if (PH.Next("note"))
+ DL = ED ? &ED->Notes : nullptr;
+ else if (PH.Next("no-diagnostics")) {
+ if (Status == VerifyDiagnosticConsumer::HasOtherExpectedDirectives)
+ Diags.Report(Pos, diag::err_verify_invalid_no_diags)
+ << /*IsExpectedNoDiagnostics=*/true;
+ else
+ Status = VerifyDiagnosticConsumer::HasExpectedNoDiagnostics;
+ continue;
+ } else
+ continue;
+ PH.Advance();
+
+ if (Status == VerifyDiagnosticConsumer::HasExpectedNoDiagnostics) {
+ Diags.Report(Pos, diag::err_verify_invalid_no_diags)
+ << /*IsExpectedNoDiagnostics=*/false;
+ continue;
+ }
+ Status = VerifyDiagnosticConsumer::HasOtherExpectedDirectives;
+
+ // If a directive has been found but we're not interested
+ // in storing the directive information, return now.
+ if (!DL)
+ return true;
+
+ // Default directive kind.
+ bool RegexKind = false;
+ const char* KindStr = "string";
+
+ // Next optional token: -
+ if (PH.Next("-re")) {
+ PH.Advance();
+ RegexKind = true;
+ KindStr = "regex";
+ }
+
+ // Next optional token: @
+ SourceLocation ExpectedLoc;
+ bool MatchAnyLine = false;
+ if (!PH.Next("@")) {
+ ExpectedLoc = Pos;
+ } else {
+ PH.Advance();
+ unsigned Line = 0;
+ bool FoundPlus = PH.Next("+");
+ if (FoundPlus || PH.Next("-")) {
+ // Relative to current line.
+ PH.Advance();
+ bool Invalid = false;
+ unsigned ExpectedLine = SM.getSpellingLineNumber(Pos, &Invalid);
+ if (!Invalid && PH.Next(Line) && (FoundPlus || Line < ExpectedLine)) {
+ if (FoundPlus) ExpectedLine += Line;
+ else ExpectedLine -= Line;
+ ExpectedLoc = SM.translateLineCol(SM.getFileID(Pos), ExpectedLine, 1);
+ }
+ } else if (PH.Next(Line)) {
+ // Absolute line number.
+ if (Line > 0)
+ ExpectedLoc = SM.translateLineCol(SM.getFileID(Pos), Line, 1);
+ } else if (PP && PH.Search(":")) {
+ // Specific source file.
+ StringRef Filename(PH.C, PH.P-PH.C);
+ PH.Advance();
+
+ // Lookup file via Preprocessor, like a #include.
+ const DirectoryLookup *CurDir;
+ const FileEntry *FE =
+ PP->LookupFile(Pos, Filename, false, nullptr, nullptr, CurDir,
+ nullptr, nullptr, nullptr);
+ if (!FE) {
+ Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
+ diag::err_verify_missing_file) << Filename << KindStr;
+ continue;
+ }
+
+ if (SM.translateFile(FE).isInvalid())
+ SM.createFileID(FE, Pos, SrcMgr::C_User);
+
+ if (PH.Next(Line) && Line > 0)
+ ExpectedLoc = SM.translateFileLineCol(FE, Line, 1);
+ else if (PH.Next("*")) {
+ MatchAnyLine = true;
+ ExpectedLoc = SM.translateFileLineCol(FE, 1, 1);
+ }
+ }
+
+ if (ExpectedLoc.isInvalid()) {
+ Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
+ diag::err_verify_missing_line) << KindStr;
+ continue;
+ }
+ PH.Advance();
+ }
+
+ // Skip optional whitespace.
+ PH.SkipWhitespace();
+
+ // Next optional token: positive integer or a '+'.
+ unsigned Min = 1;
+ unsigned Max = 1;
+ if (PH.Next(Min)) {
+ PH.Advance();
+ // A positive integer can be followed by a '+' meaning min
+ // or more, or by a '-' meaning a range from min to max.
+ if (PH.Next("+")) {
+ Max = Directive::MaxCount;
+ PH.Advance();
+ } else if (PH.Next("-")) {
+ PH.Advance();
+ if (!PH.Next(Max) || Max < Min) {
+ Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
+ diag::err_verify_invalid_range) << KindStr;
+ continue;
+ }
+ PH.Advance();
+ } else {
+ Max = Min;
+ }
+ } else if (PH.Next("+")) {
+ // '+' on its own means "1 or more".
+ Max = Directive::MaxCount;
+ PH.Advance();
+ }
+
+ // Skip optional whitespace.
+ PH.SkipWhitespace();
+
+ // Next token: {{
+ if (!PH.Next("{{")) {
+ Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
+ diag::err_verify_missing_start) << KindStr;
+ continue;
+ }
+ PH.Advance();
+ const char* const ContentBegin = PH.C; // mark content begin
+
+ // Search for token: }}
+ if (!PH.SearchClosingBrace("{{", "}}")) {
+ Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
+ diag::err_verify_missing_end) << KindStr;
+ continue;
+ }
+ const char* const ContentEnd = PH.P; // mark content end
+ PH.Advance();
+
+ // Build directive text; convert \n to newlines.
+ std::string Text;
+ StringRef NewlineStr = "\\n";
+ StringRef Content(ContentBegin, ContentEnd-ContentBegin);
+ size_t CPos = 0;
+ size_t FPos;
+ while ((FPos = Content.find(NewlineStr, CPos)) != StringRef::npos) {
+ Text += Content.substr(CPos, FPos-CPos);
+ Text += '\n';
+ CPos = FPos + NewlineStr.size();
+ }
+ if (Text.empty())
+ Text.assign(ContentBegin, ContentEnd);
+
+ // Check that regex directives contain at least one regex.
+ if (RegexKind && Text.find("{{") == StringRef::npos) {
+ Diags.Report(Pos.getLocWithOffset(ContentBegin-PH.Begin),
+ diag::err_verify_missing_regex) << Text;
+ return false;
+ }
+
+ // Construct new directive.
+ std::unique_ptr<Directive> D = Directive::create(
+ RegexKind, Pos, ExpectedLoc, MatchAnyLine, Text, Min, Max);
+
+ std::string Error;
+ if (D->isValid(Error)) {
+ DL->push_back(std::move(D));
+ FoundDirective = true;
+ } else {
+ Diags.Report(Pos.getLocWithOffset(ContentBegin-PH.Begin),
+ diag::err_verify_invalid_content)
+ << KindStr << Error;
+ }
+ }
+
+ return FoundDirective;
+}
+
+/// HandleComment - Hook into the preprocessor and extract comments containing
+/// expected errors and warnings.
+bool VerifyDiagnosticConsumer::HandleComment(Preprocessor &PP,
+ SourceRange Comment) {
+ SourceManager &SM = PP.getSourceManager();
+
+ // If this comment is for a different source manager, ignore it.
+ if (SrcManager && &SM != SrcManager)
+ return false;
+
+ SourceLocation CommentBegin = Comment.getBegin();
+
+ const char *CommentRaw = SM.getCharacterData(CommentBegin);
+ StringRef C(CommentRaw, SM.getCharacterData(Comment.getEnd()) - CommentRaw);
+
+ if (C.empty())
+ return false;
+
+ // Fold any "\<EOL>" sequences
+ size_t loc = C.find('\\');
+ if (loc == StringRef::npos) {
+ ParseDirective(C, &ED, SM, &PP, CommentBegin, Status);
+ return false;
+ }
+
+ std::string C2;
+ C2.reserve(C.size());
+
+ for (size_t last = 0;; loc = C.find('\\', last)) {
+ if (loc == StringRef::npos || loc == C.size()) {
+ C2 += C.substr(last);
+ break;
+ }
+ C2 += C.substr(last, loc-last);
+ last = loc + 1;
+
+ if (C[last] == '\n' || C[last] == '\r') {
+ ++last;
+
+ // Escape \r\n or \n\r, but not \n\n.
+ if (last < C.size())
+ if (C[last] == '\n' || C[last] == '\r')
+ if (C[last] != C[last-1])
+ ++last;
+ } else {
+ // This was just a normal backslash.
+ C2 += '\\';
+ }
+ }
+
+ if (!C2.empty())
+ ParseDirective(C2, &ED, SM, &PP, CommentBegin, Status);
+ return false;
+}
+
+#ifndef NDEBUG
+/// \brief Lex the specified source file to determine whether it contains
+/// any expected-* directives. As a Lexer is used rather than a full-blown
+/// Preprocessor, directives inside skipped #if blocks will still be found.
+///
+/// \return true if any directives were found.
+static bool findDirectives(SourceManager &SM, FileID FID,
+ const LangOptions &LangOpts) {
+ // Create a raw lexer to pull all the comments out of FID.
+ if (FID.isInvalid())
+ return false;
+
+ // Create a lexer to lex all the tokens of the main file in raw mode.
+ const llvm::MemoryBuffer *FromFile = SM.getBuffer(FID);
+ Lexer RawLex(FID, FromFile, SM, LangOpts);
+
+ // Return comments as tokens, this is how we find expected diagnostics.
+ RawLex.SetCommentRetentionState(true);
+
+ Token Tok;
+ Tok.setKind(tok::comment);
+ VerifyDiagnosticConsumer::DirectiveStatus Status =
+ VerifyDiagnosticConsumer::HasNoDirectives;
+ while (Tok.isNot(tok::eof)) {
+ RawLex.LexFromRawLexer(Tok);
+ if (!Tok.is(tok::comment)) continue;
+
+ std::string Comment = RawLex.getSpelling(Tok, SM, LangOpts);
+ if (Comment.empty()) continue;
+
+ // Find first directive.
+ if (ParseDirective(Comment, nullptr, SM, nullptr, Tok.getLocation(),
+ Status))
+ return true;
+ }
+ return false;
+}
+#endif // !NDEBUG
+
+/// \brief Takes a list of diagnostics that have been generated but not matched
+/// by an expected-* directive and produces a diagnostic to the user from this.
+static unsigned PrintUnexpected(DiagnosticsEngine &Diags, SourceManager *SourceMgr,
+ const_diag_iterator diag_begin,
+ const_diag_iterator diag_end,
+ const char *Kind) {
+ if (diag_begin == diag_end) return 0;
+
+ SmallString<256> Fmt;
+ llvm::raw_svector_ostream OS(Fmt);
+ for (const_diag_iterator I = diag_begin, E = diag_end; I != E; ++I) {
+ if (I->first.isInvalid() || !SourceMgr)
+ OS << "\n (frontend)";
+ else {
+ OS << "\n ";
+ if (const FileEntry *File = SourceMgr->getFileEntryForID(
+ SourceMgr->getFileID(I->first)))
+ OS << " File " << File->getName();
+ OS << " Line " << SourceMgr->getPresumedLineNumber(I->first);
+ }
+ OS << ": " << I->second;
+ }
+
+ Diags.Report(diag::err_verify_inconsistent_diags).setForceEmit()
+ << Kind << /*Unexpected=*/true << OS.str();
+ return std::distance(diag_begin, diag_end);
+}
+
+/// \brief Takes a list of diagnostics that were expected to have been generated
+/// but were not and produces a diagnostic to the user from this.
+static unsigned PrintExpected(DiagnosticsEngine &Diags,
+ SourceManager &SourceMgr,
+ std::vector<Directive *> &DL, const char *Kind) {
+ if (DL.empty())
+ return 0;
+
+ SmallString<256> Fmt;
+ llvm::raw_svector_ostream OS(Fmt);
+ for (auto *DirPtr : DL) {
+ Directive &D = *DirPtr;
+ OS << "\n File " << SourceMgr.getFilename(D.DiagnosticLoc);
+ if (D.MatchAnyLine)
+ OS << " Line *";
+ else
+ OS << " Line " << SourceMgr.getPresumedLineNumber(D.DiagnosticLoc);
+ if (D.DirectiveLoc != D.DiagnosticLoc)
+ OS << " (directive at "
+ << SourceMgr.getFilename(D.DirectiveLoc) << ':'
+ << SourceMgr.getPresumedLineNumber(D.DirectiveLoc) << ')';
+ OS << ": " << D.Text;
+ }
+
+ Diags.Report(diag::err_verify_inconsistent_diags).setForceEmit()
+ << Kind << /*Unexpected=*/false << OS.str();
+ return DL.size();
+}
+
+/// \brief Determine whether two source locations come from the same file.
+static bool IsFromSameFile(SourceManager &SM, SourceLocation DirectiveLoc,
+ SourceLocation DiagnosticLoc) {
+ while (DiagnosticLoc.isMacroID())
+ DiagnosticLoc = SM.getImmediateMacroCallerLoc(DiagnosticLoc);
+
+ if (SM.isWrittenInSameFile(DirectiveLoc, DiagnosticLoc))
+ return true;
+
+ const FileEntry *DiagFile = SM.getFileEntryForID(SM.getFileID(DiagnosticLoc));
+ if (!DiagFile && SM.isWrittenInMainFile(DirectiveLoc))
+ return true;
+
+ return (DiagFile == SM.getFileEntryForID(SM.getFileID(DirectiveLoc)));
+}
+
+/// CheckLists - Compare expected to seen diagnostic lists and return the
+/// the difference between them.
+///
+static unsigned CheckLists(DiagnosticsEngine &Diags, SourceManager &SourceMgr,
+ const char *Label,
+ DirectiveList &Left,
+ const_diag_iterator d2_begin,
+ const_diag_iterator d2_end) {
+ std::vector<Directive *> LeftOnly;
+ DiagList Right(d2_begin, d2_end);
+
+ for (auto &Owner : Left) {
+ Directive &D = *Owner;
+ unsigned LineNo1 = SourceMgr.getPresumedLineNumber(D.DiagnosticLoc);
+
+ for (unsigned i = 0; i < D.Max; ++i) {
+ DiagList::iterator II, IE;
+ for (II = Right.begin(), IE = Right.end(); II != IE; ++II) {
+ if (!D.MatchAnyLine) {
+ unsigned LineNo2 = SourceMgr.getPresumedLineNumber(II->first);
+ if (LineNo1 != LineNo2)
+ continue;
+ }
+
+ if (!IsFromSameFile(SourceMgr, D.DiagnosticLoc, II->first))
+ continue;
+
+ const std::string &RightText = II->second;
+ if (D.match(RightText))
+ break;
+ }
+ if (II == IE) {
+ // Not found.
+ if (i >= D.Min) break;
+ LeftOnly.push_back(&D);
+ } else {
+ // Found. The same cannot be found twice.
+ Right.erase(II);
+ }
+ }
+ }
+ // Now all that's left in Right are those that were not matched.
+ unsigned num = PrintExpected(Diags, SourceMgr, LeftOnly, Label);
+ num += PrintUnexpected(Diags, &SourceMgr, Right.begin(), Right.end(), Label);
+ return num;
+}
+
+/// CheckResults - This compares the expected results to those that
+/// were actually reported. It emits any discrepencies. Return "true" if there
+/// were problems. Return "false" otherwise.
+///
+static unsigned CheckResults(DiagnosticsEngine &Diags, SourceManager &SourceMgr,
+ const TextDiagnosticBuffer &Buffer,
+ ExpectedData &ED) {
+ // We want to capture the delta between what was expected and what was
+ // seen.
+ //
+ // Expected \ Seen - set expected but not seen
+ // Seen \ Expected - set seen but not expected
+ unsigned NumProblems = 0;
+
+ // See if there are error mismatches.
+ NumProblems += CheckLists(Diags, SourceMgr, "error", ED.Errors,
+ Buffer.err_begin(), Buffer.err_end());
+
+ // See if there are warning mismatches.
+ NumProblems += CheckLists(Diags, SourceMgr, "warning", ED.Warnings,
+ Buffer.warn_begin(), Buffer.warn_end());
+
+ // See if there are remark mismatches.
+ NumProblems += CheckLists(Diags, SourceMgr, "remark", ED.Remarks,
+ Buffer.remark_begin(), Buffer.remark_end());
+
+ // See if there are note mismatches.
+ NumProblems += CheckLists(Diags, SourceMgr, "note", ED.Notes,
+ Buffer.note_begin(), Buffer.note_end());
+
+ return NumProblems;
+}
+
+void VerifyDiagnosticConsumer::UpdateParsedFileStatus(SourceManager &SM,
+ FileID FID,
+ ParsedStatus PS) {
+ // Check SourceManager hasn't changed.
+ setSourceManager(SM);
+
+#ifndef NDEBUG
+ if (FID.isInvalid())
+ return;
+
+ const FileEntry *FE = SM.getFileEntryForID(FID);
+
+ if (PS == IsParsed) {
+ // Move the FileID from the unparsed set to the parsed set.
+ UnparsedFiles.erase(FID);
+ ParsedFiles.insert(std::make_pair(FID, FE));
+ } else if (!ParsedFiles.count(FID) && !UnparsedFiles.count(FID)) {
+ // Add the FileID to the unparsed set if we haven't seen it before.
+
+ // Check for directives.
+ bool FoundDirectives;
+ if (PS == IsUnparsedNoDirectives)
+ FoundDirectives = false;
+ else
+ FoundDirectives = !LangOpts || findDirectives(SM, FID, *LangOpts);
+
+ // Add the FileID to the unparsed set.
+ UnparsedFiles.insert(std::make_pair(FID,
+ UnparsedFileStatus(FE, FoundDirectives)));
+ }
+#endif
+}
+
+void VerifyDiagnosticConsumer::CheckDiagnostics() {
+ // Ensure any diagnostics go to the primary client.
+ DiagnosticConsumer *CurClient = Diags.getClient();
+ std::unique_ptr<DiagnosticConsumer> Owner = Diags.takeClient();
+ Diags.setClient(PrimaryClient, false);
+
+#ifndef NDEBUG
+ // In a debug build, scan through any files that may have been missed
+ // during parsing and issue a fatal error if directives are contained
+ // within these files. If a fatal error occurs, this suggests that
+ // this file is being parsed separately from the main file, in which
+ // case consider moving the directives to the correct place, if this
+ // is applicable.
+ if (UnparsedFiles.size() > 0) {
+ // Generate a cache of parsed FileEntry pointers for alias lookups.
+ llvm::SmallPtrSet<const FileEntry *, 8> ParsedFileCache;
+ for (ParsedFilesMap::iterator I = ParsedFiles.begin(),
+ End = ParsedFiles.end(); I != End; ++I) {
+ if (const FileEntry *FE = I->second)
+ ParsedFileCache.insert(FE);
+ }
+
+ // Iterate through list of unparsed files.
+ for (UnparsedFilesMap::iterator I = UnparsedFiles.begin(),
+ End = UnparsedFiles.end(); I != End; ++I) {
+ const UnparsedFileStatus &Status = I->second;
+ const FileEntry *FE = Status.getFile();
+
+ // Skip files that have been parsed via an alias.
+ if (FE && ParsedFileCache.count(FE))
+ continue;
+
+ // Report a fatal error if this file contained directives.
+ if (Status.foundDirectives()) {
+ llvm::report_fatal_error(Twine("-verify directives found after rather"
+ " than during normal parsing of ",
+ StringRef(FE ? FE->getName() : "(unknown)")));
+ }
+ }
+
+ // UnparsedFiles has been processed now, so clear it.
+ UnparsedFiles.clear();
+ }
+#endif // !NDEBUG
+
+ if (SrcManager) {
+ // Produce an error if no expected-* directives could be found in the
+ // source file(s) processed.
+ if (Status == HasNoDirectives) {
+ Diags.Report(diag::err_verify_no_directives).setForceEmit();
+ ++NumErrors;
+ Status = HasNoDirectivesReported;
+ }
+
+ // Check that the expected diagnostics occurred.
+ NumErrors += CheckResults(Diags, *SrcManager, *Buffer, ED);
+ } else {
+ NumErrors += (PrintUnexpected(Diags, nullptr, Buffer->err_begin(),
+ Buffer->err_end(), "error") +
+ PrintUnexpected(Diags, nullptr, Buffer->warn_begin(),
+ Buffer->warn_end(), "warn") +
+ PrintUnexpected(Diags, nullptr, Buffer->note_begin(),
+ Buffer->note_end(), "note"));
+ }
+
+ Diags.setClient(CurClient, Owner.release() != nullptr);
+
+ // Reset the buffer, we have processed all the diagnostics in it.
+ Buffer.reset(new TextDiagnosticBuffer());
+ ED.Reset();
+}
+
+std::unique_ptr<Directive> Directive::create(bool RegexKind,
+ SourceLocation DirectiveLoc,
+ SourceLocation DiagnosticLoc,
+ bool MatchAnyLine, StringRef Text,
+ unsigned Min, unsigned Max) {
+ if (!RegexKind)
+ return llvm::make_unique<StandardDirective>(DirectiveLoc, DiagnosticLoc,
+ MatchAnyLine, Text, Min, Max);
+
+ // Parse the directive into a regular expression.
+ std::string RegexStr;
+ StringRef S = Text;
+ while (!S.empty()) {
+ if (S.startswith("{{")) {
+ S = S.drop_front(2);
+ size_t RegexMatchLength = S.find("}}");
+ assert(RegexMatchLength != StringRef::npos);
+ // Append the regex, enclosed in parentheses.
+ RegexStr += "(";
+ RegexStr.append(S.data(), RegexMatchLength);
+ RegexStr += ")";
+ S = S.drop_front(RegexMatchLength + 2);
+ } else {
+ size_t VerbatimMatchLength = S.find("{{");
+ if (VerbatimMatchLength == StringRef::npos)
+ VerbatimMatchLength = S.size();
+ // Escape and append the fixed string.
+ RegexStr += llvm::Regex::escape(S.substr(0, VerbatimMatchLength));
+ S = S.drop_front(VerbatimMatchLength);
+ }
+ }
+
+ return llvm::make_unique<RegexDirective>(
+ DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text, Min, Max, RegexStr);
+}
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