예제 #1
0
/// ParseDirective - Go through the comment and see if it indicates expected
/// diagnostics. If so, then put them in the appropriate directive list.
///
static void ParseDirective(const char *CommentStart, unsigned CommentLen,
                           ExpectedData &ED, Preprocessor &PP,
                           SourceLocation Pos) {
  // A single comment may contain multiple directives.
  for (ParseHelper PH(CommentStart, CommentStart+CommentLen); !PH.Done();) {
    // search for token: expected
    if (!PH.Search("expected"))
      break;
    PH.Advance();

    // next token: -
    if (!PH.Next("-"))
      continue;
    PH.Advance();

    // next token: { error | warning | note }
    DirectiveList* DL = NULL;
    if (PH.Next("error"))
      DL = &ED.Errors;
    else if (PH.Next("warning"))
      DL = &ED.Warnings;
    else if (PH.Next("note"))
      DL = &ED.Notes;
    else
      continue;
    PH.Advance();

    // default directive kind
    bool RegexKind = false;
    const char* KindStr = "string";

    // next optional token: -
    if (PH.Next("-re")) {
      PH.Advance();
      RegexKind = true;
      KindStr = "regex";
    }

    // skip optional whitespace
    PH.SkipWhitespace();

    // next optional token: positive integer
    unsigned Count = 1;
    if (PH.Next(Count))
      PH.Advance();

    // skip optional whitespace
    PH.SkipWhitespace();

    // next token: {{
    if (!PH.Next("{{")) {
      PP.Diag(Pos.getFileLocWithOffset(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.Search("}}")) {
      PP.Diag(Pos.getFileLocWithOffset(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;
    llvm::StringRef NewlineStr = "\\n";
    llvm::StringRef Content(ContentBegin, ContentEnd-ContentBegin);
    size_t CPos = 0;
    size_t FPos;
    while ((FPos = Content.find(NewlineStr, CPos)) != llvm::StringRef::npos) {
      Text += Content.substr(CPos, FPos-CPos);
      Text += '\n';
      CPos = FPos + NewlineStr.size();
    }
    if (Text.empty())
      Text.assign(ContentBegin, ContentEnd);

    // construct new directive
    Directive *D = Directive::Create(RegexKind, Pos, Text, Count);
    std::string Error;
    if (D->isValid(Error))
      DL->push_back(D);
    else {
      PP.Diag(Pos.getFileLocWithOffset(ContentBegin-PH.Begin),
              diag::err_verify_invalid_content)
        << KindStr << Error;
    }
  }
}
/// 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 = NULL;
    if (PH.Next("error"))
      DL = ED ? &ED->Errors : NULL;
    else if (PH.Next("warning"))
      DL = ED ? &ED->Warnings : NULL;
    else if (PH.Next("note"))
      DL = ED ? &ED->Notes : NULL;
    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;
    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, NULL, CurDir,
                                             NULL, NULL, 0);
        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);
      }

      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.
    Directive *D = Directive::create(RegexKind, Pos, ExpectedLoc, Text,
                                     Min, Max);
    std::string Error;
    if (D->isValid(Error)) {
      DL->push_back(D);
      FoundDirective = true;
    } else {
      Diags.Report(Pos.getLocWithOffset(ContentBegin-PH.Begin),
                   diag::err_verify_invalid_content)
        << KindStr << Error;
    }
  }

  return FoundDirective;
}
예제 #3
0
/// 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,
                           const llvm::SourceMgr &SM,
                           SourceLocation Pos, DiagnosticsEngine &Diags,
                           VerifyDiagnosticConsumer::DirectiveStatus &Status) {
  // 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 = NULL;
    if (PH.Next("diag"))
      DL = ED ? &ED->Errors : NULL;
    else if (PH.Next("note"))
      DL = ED ? &ED->Notes : NULL;
    else if (PH.Next("no-diagnostics")) {
      if (Status == VerifyDiagnosticConsumer::HasOtherExpectedDirectives)
        Diags.Report(Pos, diag::verify_invalid_no_diags)
          << /*IsExpectedNoDiagnostics=*/true;
      else
        Status = VerifyDiagnosticConsumer::HasExpectedNoDiagnostics;
      continue;
    } else
      continue;
    PH.Advance();

    if (Status == VerifyDiagnosticConsumer::HasExpectedNoDiagnostics) {
      Diags.Report(Pos, diag::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;
    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();
        unsigned ExpectedLine = SM.getLineAndColumn(Pos).first;
        if (PH.Next(Line) && (FoundPlus || Line < ExpectedLine)) {
          if (FoundPlus) ExpectedLine += Line;
          else ExpectedLine -= Line;
          ExpectedLoc = locForLine(SM, Pos, ExpectedLine);
        }
      } else {
        // Absolute line number.
        if (PH.Next(Line) && Line > 0)
          ExpectedLoc = locForLine(SM, Pos, Line);
      }

      if (!ExpectedLoc.isValid()) {
        Diags.Report(Pos, diag::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, diag::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, diag::verify_missing_start) << KindStr;
      continue;
    }
    PH.Advance();
    const char* const ContentBegin = PH.C; // mark content begin

    // Search for token: }}
    if (!PH.Search("}}")) {
      Diags.Report(Pos, diag::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);

    // Construct new directive.
    Directive *D = Directive::create(RegexKind, Pos, ExpectedLoc, Text,
                                     Min, Max);
    std::string Error;
    if (D->isValid(Error)) {
      DL->push_back(D);
      FoundDirective = true;
    } else {
      Diags.Report(Pos, diag::verify_invalid_content) << KindStr << Error;
    }
  }

  return FoundDirective;
}
/// 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,
                           SourceLocation Pos, DiagnosticsEngine &Diags) {
  // A single comment may contain multiple directives.
  bool FoundDirective = false;
  for (ParseHelper PH(S); !PH.Done();) {
    // Search for token: expected
    if (!PH.Search("expected"))
      break;
    PH.Advance();

    // Next token: -
    if (!PH.Next("-"))
      continue;
    PH.Advance();

    // Next token: { error | warning | note }
    DirectiveList* DL = NULL;
    if (PH.Next("error"))
      DL = &ED.Errors;
    else if (PH.Next("warning"))
      DL = &ED.Warnings;
    else if (PH.Next("note"))
      DL = &ED.Notes;
    else
      continue;
    PH.Advance();

    // 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;
    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 {
        // Absolute line number.
        if (PH.Next(Line) && Line > 0)
          ExpectedLoc = SM.translateLineCol(SM.getFileID(Pos), Line, 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.Search("}}")) {
      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);

    // Construct new directive.
    Directive *D = Directive::create(RegexKind, Pos, ExpectedLoc, Text,
                                     Min, Max);
    std::string Error;
    if (D->isValid(Error)) {
      DL->push_back(D);
      FoundDirective = true;
    } else {
      Diags.Report(Pos.getLocWithOffset(ContentBegin-PH.Begin),
                   diag::err_verify_invalid_content)
        << KindStr << Error;
    }
  }

  return FoundDirective;
}