Examples of org.jacoco.core.analysis.Analyzer

org.jacoco.core.analysis.Analyzer
An {@link Analyzer} instance processes a set of Java class files andcalculates coverage data for them. For each class file the result is reported to a given {@link ICoverageVisitor} instance. In addition the{@link Analyzer} requires a {@link ExecutionDataStore} instance that holdsthe execution data for the classes to analyze. The {@link Analyzer} offersseveral methods to analyze classes from a variety of sources.

  protected abstract void run(final Class<?> targetClass) throws Exception;


  private void analyze(final ClassReader reader,
      final ExecutionDataStore store) {
    final CoverageBuilder builder = new CoverageBuilder();
    final Analyzer analyzer = new Analyzer(store, builder);
    analyzer.analyzeClass(reader);
    final Collection<IClassCoverage> classes = builder.getClasses();
    assertEquals(1, classes.size(), 0.0);
    classCoverage = classes.iterator().next();
    final Collection<ISourceFileCoverage> files = builder.getSourceFiles();
    assertEquals(1, files.size(), 0.0);

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    }
    if (group.children.size() > 0) {
      return new CoverageNodeImpl(ElementType.GROUP, group.name);
    } else {
      final CoverageBuilder builder = new CoverageBuilder();
      final Analyzer analyzer = new Analyzer(executionDataStore, builder);
      for (final Iterator<?> i = group.classfiles.iterator(); i.hasNext();) {
        final Resource resource = (Resource) i.next();
        if (resource.isDirectory() && resource instanceof FileResource) {
          analyzer.analyzeAll(((FileResource) resource).getFile());
        } else {
          final InputStream in = resource.getInputStream();
          analyzer.analyzeAll(in);
          in.close();
        }
      }
      return builder.getBundle(group.name);
    }

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  private ICounter analyze() {
    final CoverageBuilder builder = new CoverageBuilder();
    final ExecutionDataStore store = new ExecutionDataStore();
    data.collect(store, new SessionInfoStore(), false);
    final Analyzer analyzer = new Analyzer(store, builder);
    analyzer.analyzeClass(reader);
    final Collection<IClassCoverage> classes = builder.getClasses();
    assertEquals(1, classes.size(), 0.0);
    final IClassCoverage classCoverage = classes.iterator().next();
    for (final IMethodCoverage m : classCoverage.getMethods()) {
      if (m.getName().equals("test")) {

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  }


  private IBundleCoverage createBundle(final GroupElement group)
      throws IOException {
    final CoverageBuilder builder = new CoverageBuilder();
    final Analyzer analyzer = new Analyzer(executionDataStore, builder);
    for (final Iterator<?> i = group.classfiles.iterator(); i.hasNext();) {
      final Resource resource = (Resource) i.next();
      if (resource.isDirectory() && resource instanceof FileResource) {
        analyzer.analyzeAll(((FileResource) resource).getFile());
      } else {
        final InputStream in = resource.getInputStream();
        analyzer.analyzeAll(in, resource.getName());
        in.close();
      }
    }
    final IBundleCoverage bundle = builder.getBundle(group.name);
    logBundleInfo(bundle, builder.getNoMatchClasses());

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  protected abstract void run(final Class<?> targetClass) throws Exception;


  private void analyze(final ClassReader reader,
      final ExecutionDataStore store) {
    final CoverageBuilder builder = new CoverageBuilder();
    final Analyzer analyzer = new Analyzer(store, builder);
    analyzer.analyzeClass(reader);
    final Collection<IClassCoverage> classes = builder.getClasses();
    assertEquals(1, classes.size(), 0.0);
    classCoverage = classes.iterator().next();
    final Collection<ISourceFileCoverage> files = builder.getSourceFiles();
    assertEquals(1, files.size(), 0.0);

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    final ExecutionDataStore executionData = new ExecutionDataStore();
    ICoverageVisitor visitor = new ICoverageVisitor() {
      public void visitCoverage(IClassCoverage coverage) {
      }
    };
    final Analyzer analyzer = new Analyzer(executionData, visitor);
    return new Callable<Void>() {
      public Void call() throws Exception {
        for (int i = 0; i < count; i++) {
          analyzer.analyzeClass(bytes, target.getName());
        }
        return null;
      }
    };
  }

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   *             if class files can't be read
   */
  public IBundleCoverage createBundle(
      final ExecutionDataStore executionDataStore) throws IOException {
    final CoverageBuilder builder = new CoverageBuilder();
    final Analyzer analyzer = new Analyzer(executionDataStore, builder);
    final File classesDir = new File(this.project.getBuild()
        .getOutputDirectory());


    @SuppressWarnings("unchecked")
    final List<File> filesToAnalyze = FileUtils.getFiles(classesDir,
        fileFilter.getIncludes(), fileFilter.getExcludes());


    for (final File file : filesToAnalyze) {
      analyzer.analyzeAll(file);
    }


    final IBundleCoverage bundle = builder
        .getBundle(this.project.getName());
    logBundleInfo(bundle, builder.getNoMatchClasses());

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    runtime.shutdown();


    // Together with the original class definition we can calculate coverage
    // information:
    final CoverageBuilder coverageBuilder = new CoverageBuilder();
    final Analyzer analyzer = new Analyzer(executionData, coverageBuilder);
    analyzer.analyzeClass(getTargetClass(targetName), targetName);


    // Let's dump some metrics and line coverage information:
    for (final IClassCoverage cc : coverageBuilder.getClasses()) {
      out.printf("Coverage of class %s%n", cc.getName());

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   * @param out
   *            stream for outputs
   */
  public ClassInfo(final PrintStream out) {
    this.out = out;
    analyzer = new Analyzer(new ExecutionDataStore(), this);
  }

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    execFileLoader.load(executionDataFile);
  }


  private IBundleCoverage analyzeStructure() throws IOException {
    final CoverageBuilder coverageBuilder = new CoverageBuilder();
    final Analyzer analyzer = new Analyzer(
        execFileLoader.getExecutionDataStore(), coverageBuilder);


    analyzer.analyzeAll(classesDirectory);


    return coverageBuilder.getBundle(title);
  }

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