How to use

ClassAnalyzer

in

rocks.inspectit.agent.java.instrumentation.asm

/**
 * Init.
 */
@BeforeMethod
public void init() {
  classAnalyzer = new ClassAnalyzer(HASH);
}

  @Test
  public void nestedClass() throws Exception {
    ClassReader classReader = new ClassReader(TestClass.NestedClass.class.getName());
    classReader.accept(classAnalyzer, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
    ImmutableType immutableType = classAnalyzer.getType();
    assertThat(immutableType.getFQN(), is(TestClass.class.getName() + "$" + TestClass.NestedClass.class.getSimpleName()));
  }
}

ClassAnalyzer classAnalyzer = new ClassAnalyzer(hash);
classReader.accept(classAnalyzer, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
Type type = (Type) classAnalyzer.getType();

@Test
public void innerClass() throws Exception {
  ClassReader classReader = new ClassReader(TestClass.InnerClass.class.getName());
  classReader.accept(classAnalyzer, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
  ImmutableType immutableType = classAnalyzer.getType();
  assertThat(immutableType.getFQN(), is(TestClass.class.getName() + "$" + TestClass.InnerClass.class.getSimpleName()));
}

/**
 * Testing the correct parsing of {@link TestAnnotation}.
 */
@Test
public void theAnnotation() throws IOException {
  ClassReader classReader = new ClassReader(TestAnnotation.class.getName());
  classReader.accept(classAnalyzer, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
  ImmutableType immutableType = classAnalyzer.getType();
  assertThat(immutableType, is(instanceOf(AnnotationType.class)));
  AnnotationType type = (AnnotationType) immutableType;
  // name
  assertThat(type.getFQN(), is(equalTo(TestAnnotation.class.getName())));
  assertThat(type.isInitialized(), is(true));
  // modifiers
  assertThat(Modifiers.isPublic(type.getModifiers()), is(true));
  // only one hash when analyzed
  assertThat(type.getHashes(), hasSize(1));
  assertThat(type.getHashes(), hasItem(HASH));
  // @Retention annotation
  assertThat(type.getAnnotations(), hasSize(1));
  assertThat(type.getAnnotations().iterator().next().getFQN(), is(equalTo(Retention.class.getName())));
  // other
  assertThat(type.getAnnotatedTypes(), is(not(nullValue())));
  assertThat(type.getAnnotatedTypes(), is(empty()));
  assertThat(type.getRealizingClasses(), is(not(nullValue())));
  assertThat(type.getRealizingClasses(), is(empty()));
}

classReader.accept(classAnalyzer, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
ImmutableType immutableType = classAnalyzer.getType();
assertThat(immutableType, is(instanceOf(InterfaceType.class)));

classReader.accept(classAnalyzer, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
ImmutableType immutableType = classAnalyzer.getType();
assertThat(immutableType, is(instanceOf(ClassType.class)));

classReader.accept(classAnalyzer, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
ImmutableType immutableType = classAnalyzer.getType();
assertThat(immutableType, is(instanceOf(ClassType.class)));