Exemplo n.º 1
0
void ClangParser::start(const char *fileName,QStrList &filesInTranslationUnit)
{
  static bool clangAssistedParsing = Config_getBool(CLANG_ASSISTED_PARSING);
  static QStrList &includePath = Config_getList(INCLUDE_PATH);
  static QStrList clangOptions = Config_getList(CLANG_OPTIONS);
  static QCString clangCompileDatabase = Config_getList(CLANG_COMPILATION_DATABASE_PATH);
  if (!clangAssistedParsing) return;
  //printf("ClangParser::start(%s)\n",fileName);
  p->fileName = fileName;
  p->index    = clang_createIndex(0, 0);
  p->curLine  = 1;
  p->curToken = 0;
  QDictIterator<void> di(Doxygen::inputPaths);
  int argc=0;
  std::string error;
  // load a clang compilation database (https://clang.llvm.org/docs/JSONCompilationDatabase.html)
  // this only needs to be loaded once, and could be refactored to a higher level function
  static std::unique_ptr<clang::tooling::CompilationDatabase> db =
      clang::tooling::CompilationDatabase::loadFromDirectory(clangCompileDatabase.data(), error);
  int clang_option_len = 0;
  std::vector<clang::tooling::CompileCommand> command;
  if (strcmp(clangCompileDatabase, "0") != 0) {
      if (db == nullptr) {
          // user specified a path, but DB file was not found
          err("%s using clang compilation database path of: \"%s\"\n", error.c_str(),
              clangCompileDatabase.data());
      } else {
          // check if the file we are parsing is in the DB
          command = db->getCompileCommands(fileName);
          if (!command.empty() ) {
              // it's possible to have multiple entries for the same file, so use the last entry
              clang_option_len = command[command.size()-1].CommandLine.size();
          }
      }
  }
  char **argv = (char**)malloc(sizeof(char*)*(4+Doxygen::inputPaths.count()+includePath.count()+clangOptions.count()+clang_option_len));
  if (!command.empty() ) {
      std::vector<std::string> options = command[command.size()-1].CommandLine;
      // copy each compiler option used from the database. Skip the first which is compiler exe.
      for (auto option = options.begin()+1; option != options.end(); option++) {
          argv[argc++] = strdup(option->c_str());
      }
      // this extra addition to argv is accounted for as we are skipping the first entry in
      argv[argc++]=strdup("-w"); // finally, turn off warnings.
  } else {
  // add include paths for input files
  for (di.toFirst();di.current();++di,++argc)
  {
    QCString inc = QCString("-I")+di.currentKey();
    argv[argc]=strdup(inc.data());
    //printf("argv[%d]=%s\n",argc,argv[argc]);
  }
  // add external include paths
  for (uint i=0;i<includePath.count();i++)
  {
    QCString inc = QCString("-I")+includePath.at(i);
    argv[argc++]=strdup(inc.data());
  }
  // user specified options
  for (uint i=0;i<clangOptions.count();i++)
  {
    argv[argc++]=strdup(clangOptions.at(i));
  }
  // extra options
  argv[argc++]=strdup("-ferror-limit=0");
  argv[argc++]=strdup("-x");

  // Since we can be presented with a .h file that can contain C/C++ or
  // Objective C code and we need to configure the parser before knowing this,
  // we use the source file to detected the language. Detection will fail if you
  // pass a bunch of .h files containing ObjC code, and no sources :-(
  SrcLangExt lang = getLanguageFromFileName(fileName);
  if (lang==SrcLangExt_ObjC || p->detectedLang!=ClangParser::Private::Detected_Cpp)
  {
    QCString fn = fileName;
    if (p->detectedLang==ClangParser::Private::Detected_Cpp && 
        (fn.right(4).lower()==".cpp" || fn.right(4).lower()==".cxx" ||
         fn.right(3).lower()==".cc" || fn.right(2).lower()==".c"))
    { // fall back to C/C++ once we see an extension that indicates this
      p->detectedLang = ClangParser::Private::Detected_Cpp;
    }
    else if (fn.right(3).lower()==".mm") // switch to Objective C++
    {
      p->detectedLang = ClangParser::Private::Detected_ObjCpp;
    }
    else if (fn.right(2).lower()==".m") // switch to Objective C
    {
      p->detectedLang = ClangParser::Private::Detected_ObjC;
    }
  }
  switch(p->detectedLang)
  {
    case ClangParser::Private::Detected_Cpp: 
      argv[argc++]=strdup("c++"); 
      break;
    case ClangParser::Private::Detected_ObjC: 
      argv[argc++]=strdup("objective-c"); 
      break;
    case ClangParser::Private::Detected_ObjCpp: 
      argv[argc++]=strdup("objective-c++"); 
      break;
  }

  // provide the input and and its dependencies as unsaved files so we can
  // pass the filtered versions
  argv[argc++]=strdup(fileName);
  }
  static bool filterSourceFiles = Config_getBool(FILTER_SOURCE_FILES);
  //printf("source %s ----------\n%s\n-------------\n\n",
  //    fileName,p->source.data());
  uint numUnsavedFiles = filesInTranslationUnit.count()+1;
  p->numFiles = numUnsavedFiles;
  p->sources = new QCString[numUnsavedFiles];
  p->ufs     = new CXUnsavedFile[numUnsavedFiles];
  p->sources[0]      = detab(fileToString(fileName,filterSourceFiles,TRUE));
  p->ufs[0].Filename = strdup(fileName);
  p->ufs[0].Contents = p->sources[0].data();
  p->ufs[0].Length   = p->sources[0].length();
  QStrListIterator it(filesInTranslationUnit);
  uint i=1;
  for (it.toFirst();it.current() && i<numUnsavedFiles;++it,i++)
  {
    p->fileMapping.insert(it.current(),new uint(i));
    p->sources[i]      = detab(fileToString(it.current(),filterSourceFiles,TRUE));
    p->ufs[i].Filename = strdup(it.current());
    p->ufs[i].Contents = p->sources[i].data();
    p->ufs[i].Length   = p->sources[i].length();
  }

  // let libclang do the actual parsing
  p->tu = clang_parseTranslationUnit(p->index, 0,
                                     argv, argc, p->ufs, numUnsavedFiles, 
                                     CXTranslationUnit_DetailedPreprocessingRecord);
  // free arguments
  for (int i=0;i<argc;++i)
  {
    free(argv[i]);
  }
  free(argv);

  if (p->tu)
  {
    // filter out any includes not found by the clang parser
    determineInputFilesInSameTu(filesInTranslationUnit);

    // show any warnings that the compiler produced
    for (uint i=0, n=clang_getNumDiagnostics(p->tu); i!=n; ++i) 
    {
      CXDiagnostic diag = clang_getDiagnostic(p->tu, i); 
      CXString string = clang_formatDiagnostic(diag,
          clang_defaultDiagnosticDisplayOptions()); 
      err("%s [clang]\n",clang_getCString(string));
      clang_disposeString(string);
      clang_disposeDiagnostic(diag);
    }

    // create a source range for the given file
    QFileInfo fi(fileName);
    CXFile f = clang_getFile(p->tu, fileName);
    CXSourceLocation fileBegin = clang_getLocationForOffset(p->tu, f, 0);
    CXSourceLocation fileEnd   = clang_getLocationForOffset(p->tu, f, p->ufs[0].Length);
    CXSourceRange    fileRange = clang_getRange(fileBegin, fileEnd);

    // produce a token stream for the file
    clang_tokenize(p->tu,fileRange,&p->tokens,&p->numTokens);

    // produce cursors for each token in the stream
    p->cursors=new CXCursor[p->numTokens];
    clang_annotateTokens(p->tu,p->tokens,p->numTokens,p->cursors);
  }
  else
  {
    p->tokens    = 0;
    p->numTokens = 0;
    p->cursors   = 0;
    err("clang: Failed to parse translation unit %s\n",fileName);
  }
}
Exemplo n.º 2
0
void ClangParser::start(const char *fileName,QStrList &filesInTranslationUnit)
{
  static bool clangAssistedParsing = Config_getBool("CLANG_ASSISTED_PARSING");
  static QStrList &includePath = Config_getList("INCLUDE_PATH");
  static QStrList clangOptions = Config_getList("CLANG_OPTIONS");
  if (!clangAssistedParsing) return;
  //printf("ClangParser::start(%s)\n",fileName);
  p->fileName = fileName;
  p->index    = clang_createIndex(0, 0);
  p->curLine  = 1;
  p->curToken = 0;
  char **argv = (char**)malloc(sizeof(char*)*(4+Doxygen::inputPaths.count()+includePath.count()+clangOptions.count()));
  QDictIterator<void> di(Doxygen::inputPaths);
  int argc=0;
  // add include paths for input files
  for (di.toFirst();di.current();++di,++argc)
  {
    QCString inc = QCString("-I")+di.currentKey();
    argv[argc]=strdup(inc.data());
    //printf("argv[%d]=%s\n",argc,argv[argc]);
  }
  // add external include paths
  for (uint i=0;i<includePath.count();i++)
  {
    QCString inc = QCString("-I")+includePath.at(i);
    argv[argc++]=strdup(inc.data());
  }
  // user specified options
  for (uint i=0;i<clangOptions.count();i++)
  {
    argv[argc++]=strdup(clangOptions.at(i));
  }
  // extra options
  argv[argc++]=strdup("-ferror-limit=0");
  argv[argc++]=strdup("-x");

  // Since we can be presented with a .h file that can contain C/C++ or
  // Objective C code and we need to configure the parser before knowing this,
  // we use the source file to detected the language. Detection will fail if you
  // pass a bunch of .h files containing ObjC code, and no sources :-(
  SrcLangExt lang = getLanguageFromFileName(fileName);
  if (lang==SrcLangExt_ObjC || p->detectedLang!=ClangParser::Private::Detected_Cpp)
  {
    QCString fn = fileName;
    if (p->detectedLang==ClangParser::Private::Detected_Cpp && 
        (fn.right(4).lower()==".cpp" || fn.right(4).lower()==".cxx" ||
         fn.right(3).lower()==".cc" || fn.right(2).lower()==".c"))
    { // fall back to C/C++ once we see an extension that indicates this
      p->detectedLang = ClangParser::Private::Detected_Cpp;
    }
    else if (fn.right(3).lower()==".mm") // switch to Objective C++
    {
      p->detectedLang = ClangParser::Private::Detected_ObjCpp;
    }
    else if (fn.right(2).lower()==".m") // switch to Objective C
    {
      p->detectedLang = ClangParser::Private::Detected_ObjC;
    }
  }
  switch(p->detectedLang)
  {
    case ClangParser::Private::Detected_Cpp: 
      argv[argc++]=strdup("c++"); 
      break;
    case ClangParser::Private::Detected_ObjC: 
      argv[argc++]=strdup("objective-c"); 
      break;
    case ClangParser::Private::Detected_ObjCpp: 
      argv[argc++]=strdup("objective-c++"); 
      break;
  }

  // provide the input and and its dependencies as unsaved files so we can
  // pass the filtered versions
  argv[argc++]=strdup(fileName);
  static bool filterSourceFiles = Config_getBool("FILTER_SOURCE_FILES");
  //printf("source %s ----------\n%s\n-------------\n\n",
  //    fileName,p->source.data());
  uint numUnsavedFiles = filesInTranslationUnit.count()+1;
  p->numFiles = numUnsavedFiles;
  p->sources = new QCString[numUnsavedFiles];
  p->ufs     = new CXUnsavedFile[numUnsavedFiles];
  p->sources[0]      = detab(fileToString(fileName,filterSourceFiles,TRUE));
  p->ufs[0].Filename = strdup(fileName);
  p->ufs[0].Contents = p->sources[0].data();
  p->ufs[0].Length   = p->sources[0].length();
  QStrListIterator it(filesInTranslationUnit);
  uint i=1;
  for (it.toFirst();it.current() && i<numUnsavedFiles;++it,i++)
  {
    p->fileMapping.insert(it.current(),new uint(i));
    p->sources[i]      = detab(fileToString(it.current(),filterSourceFiles,TRUE));
    p->ufs[i].Filename = strdup(it.current());
    p->ufs[i].Contents = p->sources[i].data();
    p->ufs[i].Length   = p->sources[i].length();
  }

  // let libclang do the actual parsing
  p->tu = clang_parseTranslationUnit(p->index, 0,
                                     argv, argc, p->ufs, numUnsavedFiles, 
                                     CXTranslationUnit_DetailedPreprocessingRecord);
  // free arguments
  for (int i=0;i<argc;++i)
  {
    free(argv[i]);
  }
  free(argv);

  if (p->tu)
  {
    // filter out any includes not found by the clang parser
    determineInputFilesInSameTu(filesInTranslationUnit);

    // show any warnings that the compiler produced
    for (uint i=0, n=clang_getNumDiagnostics(p->tu); i!=n; ++i) 
    {
      CXDiagnostic diag = clang_getDiagnostic(p->tu, i); 
      CXString string = clang_formatDiagnostic(diag,
          clang_defaultDiagnosticDisplayOptions()); 
      err("%s [clang]\n",clang_getCString(string));
      clang_disposeString(string);
      clang_disposeDiagnostic(diag);
    }

    // create a source range for the given file
    QFileInfo fi(fileName);
    CXFile f = clang_getFile(p->tu, fileName);
    CXSourceLocation fileBegin = clang_getLocationForOffset(p->tu, f, 0);
    CXSourceLocation fileEnd   = clang_getLocationForOffset(p->tu, f, p->ufs[0].Length);
    CXSourceRange    fileRange = clang_getRange(fileBegin, fileEnd);

    // produce a token stream for the file
    clang_tokenize(p->tu,fileRange,&p->tokens,&p->numTokens);

    // produce cursors for each token in the stream
    p->cursors=new CXCursor[p->numTokens];
    clang_annotateTokens(p->tu,p->tokens,p->numTokens,p->cursors);
  }
  else
  {
    p->tokens    = 0;
    p->numTokens = 0;
    p->cursors   = 0;
    err("clang: Failed to parse translation unit %s\n",fileName);
  }
}