Ejemplo n.º 1
0
  /**
   * Function for traversing the source files in the application under analysis
   *
   * @param astC
   * @return
   */
  public TreeSet analyzeLibraryCode(ASTCrawler astC) {
    IJavaProject libProject = RepositoryAnalyzer.getInstance().getCurrentJProject();
    if (libProject == null) {
      logger.warn("No library project is available as input. Nothing can be done, Sorry!!!!");
      return null;
    }

    try {
      IPackageFragment[] fragments = libProject.getPackageFragments();
      for (int j = 0; j < fragments.length; j++) {
        switch (fragments[j].getKind()) {
          case IPackageFragmentRoot.K_SOURCE:

            /**
             * @todo I'm not sure whether K_SOURCE actually means non-Archive (and therefore further
             *     testing is obsolete)
             */
            IPackageFragmentRoot root =
                (IPackageFragmentRoot) fragments[j].getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);

            if (!root.isArchive()) {
              ICompilationUnit[] units = fragments[j].getCompilationUnits();
              for (ICompilationUnit icu : units) {
                ASTParser parser = ASTParser.newParser(AST.JLS3);
                parser.setProject(libProject);
                parser.setResolveBindings(true);
                parser.setStatementsRecovery(true);

                parser.setSource(icu);
                CompilationUnit cu_java = (CompilationUnit) parser.createAST(null);

                try {
                  // This also clears the class specific data of the previous run
                  String path = icu.getPath().toString();
                  int indexOfLastSlash;
                  if ((indexOfLastSlash = path.lastIndexOf("/")) != -1) {
                    path = path.substring(indexOfLastSlash + 1, path.length());
                  }
                  astC.preProcessClass(cu_java, path);
                  MethodInvocationHolder.MIHKEYGEN = 0;
                  cu_java.accept(astC);
                } catch (Exception ex) {
                  ex.printStackTrace();
                }
              }
            }

            break;

          default:
            break;
        }
      }
    } catch (Exception ex) {
      ex.printStackTrace();
    }

    return astC.postProcess();
  }
Ejemplo n.º 2
0
  /** Function for invoking ASTCrawler on each file in the list stored in a directory */
  public TreeSet invokeASTCrawler(
      String directoryPath,
      List filesList,
      String sourceObject,
      String destinationObject,
      boolean bReUseOldInstance) {
    // ASTCrawler class
    if (!bReUseOldInstance || astC == null) astC = new ASTCrawler(directoryPath);
    astC.sourceObj = sourceObject;
    astC.destObj = destinationObject;

    if (CommonConstants.OPERATION_MODE == CommonConstants.DETECT_BUGS_IN_LIBRARY) {
      return analyzeLibraryCode(astC);
    }

    int fileLimitCounter = 0; // A maximum of 1000 files are analyzed for each kind of object
    // to get some early results for improving the tool
    for (Iterator iter = filesList.iterator(); iter.hasNext(); ) {
      try {
        // Incrementing static counter :
        RepositoryAnalyzer.numAnalyzedCodeSamples++;

        String inputFileName = (String) iter.next();

        // AnamolyDetector
        // If the combination of package name and file name is same and
        // is already visitied, don't visit again to reduce duplicate
        // patterns, as duplicate samples can be downloaded from GCSE
        int indexOfUnderscore = 0;
        if ((indexOfUnderscore = inputFileName.indexOf("_")) != -1) {
          RepositoryAnalyzer raObj = RepositoryAnalyzer.getInstance();
          String searchStr = sourceObject.replace(".", "_") + inputFileName;
          String file_packagename =
              inputFileName.substring(indexOfUnderscore + 1, inputFileName.length())
                  + "#"
                  + raObj.getCodeSampleIDToPackageMapper().get(searchStr);
          if (raObj.getVisitedCodeSamples().contains(file_packagename)) {
            continue;
          } else {
            raObj.getVisitedCodeSamples().add(file_packagename);
          }
        }

        File inputFile = new File(directoryPath + CommonConstants.FILE_SEP + inputFileName);
        long flength = inputFile.length();

        // Ignore parsing files more than 50KB. Needs more heuristics later to deal here.
        if (flength > 50000) {
          continue;
        }

        logger.warn("Analyzing " + inputFile.getName());
        char[] source = new char[(int) inputFile.length()];
        FileReader fileReader = new FileReader(inputFile);
        fileReader.read(source);
        fileReader.close();

        ASTParser parser = ASTParser.newParser(AST.JLS3);
        parser.setResolveBindings(true);
        parser.setStatementsRecovery(true);
        parser.setSource(source);
        parser.setProject(RepositoryAnalyzer.getInstance().getLibProject());

        CompilationUnit root = (CompilationUnit) parser.createAST(null);
        if ((root.getFlags() & CompilationUnit.MALFORMED) != 0) {
          logger.error("Error occurred while parsing the file: " + inputFile.getName());
          continue;
        }

        try {
          // This also clears the class specific data of the previous run
          astC.preProcessClass(root, inputFile.getName());
          MethodInvocationHolder.MIHKEYGEN = 0;
          root.accept(astC);
        } catch (Exception ex) {
          ex.printStackTrace();
        }

        fileLimitCounter++;
        if (fileLimitCounter > CommonConstants.LIMIT_NUM_FILES) {
          break;
        }
      } catch (Exception ex) {
        logger.error("Error occurred while reading the file " + ex);
        logger.error(ex.getStackTrace().toString());
      }
    }
    return astC.postProcess();
  }