@Override
public boolean process(Set<? extends TypeElement> set, RoundEnvironment roundEnvironment) {
    if (CollectionUtils.isEmpty(set)) {
        return false;
    }
    for (TypeElement typeElement : set) {
        Set<? extends Element> annotated = roundEnvironment.getElementsAnnotatedWith(typeElement);
        for (Element apiImplElement : annotated) {
            ApiImpl annotation = apiImplElement.getAnnotation(ApiImpl.class);
            if (annotation == null || !(apiImplElement instanceof TypeElement)) {
                continue;
            }
            ApiContract<ClassName> apiNameContract = getApiClassNameContract((TypeElement) apiImplElement);
            try {
                JavaFile.builder(ApiConstants.PACKAGE_NAME_CONTRACT, buildClass(apiNameContract))
                        .build()
                        .writeTo(filer);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return true;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    if (round++ == 0) {
        try (Writer out = processingEnv.getFiler()
                                             .createSourceFile("Anno.java")
                                             .openWriter()) {
            String target = processingEnv.getOptions().get("target");
            String code = "import java.lang.annotation.ElementType;\n" +
                          "import java.lang.annotation.Target;\n" +
                          "@Target(ElementType." + target + ")\n" +
                          "@interface Anno { public String value(); }\n";
            out.write(code);
        } catch (IOException exc) {
            throw new IllegalStateException(exc);
        }
    }
    return true;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  for (Element annotatedElt : roundEnv.getElementsAnnotatedWith(CodeTranslate.class)) {
    ExecutableElement methodElt = (ExecutableElement) annotatedElt;
    TypeElement typeElt = (TypeElement) methodElt.getEnclosingElement();
    if (typeElt.getQualifiedName().toString().equals(fqn) && methodElt.getSimpleName().toString().equals(method)) {
      for (Lang lang : langs) {
        Result result;
        try {
          String translation = translator.translate(methodElt, false, lang, RenderMode.SNIPPET);
          result = new Result.Source(translation);
        } catch (Exception e) {
          result = new Result.Failure(e);
        }
        results.put(lang, result);
      }
    }
  }
  return false;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    Set<String> packages = new TreeSet<>();
    for (Element elem : roundEnv.getElementsAnnotatedWith(Service.class)) {
        packages.add(elem.getEnclosingElement().toString());
    }

    if (!packages.isEmpty()) {
        if (!hasRun) {
            hasRun = true;
            // Add the Karaf embedded package
            try (PrintWriter w = appendResource("META-INF/org.apache.karaf.boot.bnd")) {
                w.println("Karaf-Commands: " + String.join(",", packages));
            } catch (Exception e) {
                processingEnv.getMessager().printMessage(Kind.ERROR, "Error writing to META-INF/org.apache.karaf.boot.bnd: " + e.getMessage());
            }
        }
    }

    return true;
}
 

@Override
public boolean process(Set<? extends TypeElement> set, RoundEnvironment roundEnvironment) {
    if (CollectionUtils.isNotEmpty(set)) {
        try {
            logger.info(">>> Found autowired field, start... <<<");
            categories(roundEnvironment.getElementsAnnotatedWith(Autowired.class));
            generateHelper();

        } catch (Exception e) {
            logger.error(e);
        }
        return true;
    }

    return false;
}
 

private void createFactoriesForClassesAnnotatedWithInjectConstructor(RoundEnvironment roundEnv) {
  for (Element annotatedElement :
      ElementFilter.typesIn(roundEnv.getElementsAnnotatedWith(InjectConstructor.class))) {
    TypeElement annotatedTypeElement = (TypeElement) annotatedElement;
    List<ExecutableElement> constructorElements =
        ElementFilter.constructorsIn(annotatedTypeElement.getEnclosedElements());
    if (constructorElements.size() != 1
        || constructorElements.get(0).getAnnotation(Inject.class) != null) {
      error(
          constructorElements.get(0),
          "Class %s is annotated with @InjectInjectConstructor. Therefore, It must have one unique constructor and it should not be annotated with @Inject.",
          annotatedTypeElement.getQualifiedName());
    }
    processInjectAnnotatedConstructor(
        constructorElements.get(0), mapTypeElementToConstructorInjectionTarget);
  }
}
 

public boolean process(Set<? extends TypeElement> annotations,
                       RoundEnvironment roundEnvironment) {
    TypeElement testMe = elements.getTypeElement(TestMe.class.getName());
    Set<? extends Element> supers = roundEnvironment.getElementsAnnotatedWith(testMe);
    try {
        for (Element sup : supers) {
            Writer sub = filer.createSourceFile(sup.getSimpleName() + "_GENERATED").openWriter();
            sub.write(String.format("class %s_GENERATED extends %s {}",
                                    sup.getSimpleName(),
                                    ((TypeElement)sup).getQualifiedName()));
            sub.close();
        }
    } catch (IOException ex) {
        throw new RuntimeException(ex);
    }
    return true;
}
 

private void updateCommandSpecFromCommandAnnotation(CommandSpec result,
                                                    Element element,
                                                    Context context,
                                                    RoundEnvironment roundEnv) {
    Command cmd = element.getAnnotation(Command.class);
    if (cmd != null) {
        updateCommandAttributes(result, cmd);

        List<CommandSpec> subcommands = findSubcommands(element.getAnnotationMirrors(), context, roundEnv);
        for (CommandSpec sub : subcommands) {
            result.addSubcommand(sub.name(), sub);
        }
        if (cmd.mixinStandardHelpOptions()) {
            context.commandsRequestingStandardHelpOptions.add(result);
        }
    }
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnvironment) {
    Set<? extends Element> elements = roundEnvironment.getElementsAnnotatedWith(Retain.class);
    if (elements.isEmpty()) {
        return true;
    }

    //TODO: verify activity implements onFirstCreate
    verifyFieldsAccessible(elements);

    log("processing " + elements.size() + " fields");

    Element hostActivity = elements.iterator().next().getEnclosingElement();
    TypeElement activityType = findAndroidActivitySuperType((TypeElement) hostActivity);
    if (activityType == null) {
        throw new IllegalStateException("Annotated type does not seem to be an Activity");
    }

    try {
        generateMemento(elements, hostActivity, activityType);
    } catch (IOException e) {
        throw new RuntimeException("Failed writing class file", e);
    }

    return true;
}
 

private void handleAcceptParameters(RoundEnvironment roundEnvironment,
                                    Element element,
                                    ControllerModel controllerModel)
    throws ProcessorException {
  TypeElement typeElement = (TypeElement) element;
  List<Element> annotatedElements = this.processorUtils.getMethodFromTypeElementAnnotatedWith(this.processingEnvironment,
                                                                                              typeElement,
                                                                                              AcceptParameter.class);
  // validate
  AcceptParameterAnnotationValidator.builder()
                                    .roundEnvironment(roundEnvironment)
                                    .processingEnvironment(processingEnvironment)
                                    .controllerModel(controllerModel)
                                    .listOfAnnotatedElements(annotatedElements)
                                    .build()
                                    .validate();
  // add to ControllerModel ...
  for (Element annotatedElement : annotatedElements) {
    ExecutableElement executableElement = (ExecutableElement) annotatedElement;
    AcceptParameter annotation = executableElement.getAnnotation(AcceptParameter.class);
    controllerModel.getParameterAcceptors()
                   .add(new ParameterAcceptor(annotation.value(),
                                              executableElement.getSimpleName()
                                                               .toString()));
  }
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations,
    RoundEnvironment roundEnv) {
    if (roundEnv.processingOver())
        return true;

    TypeElement aliveRangeAnno = elements.getTypeElement("AliveRanges");

    if (!annotations.contains(aliveRangeAnno)) {
        error("no @AliveRanges annotation found in test class");
    }

    for (Element elem: roundEnv.getElementsAnnotatedWith(aliveRangeAnno)) {
        Annotation annotation = elem.getAnnotation(AliveRanges.class);
        aliveRangeMap.put(new ElementKey(elem), (AliveRanges)annotation);
    }
    return true;
}
 

private void processAnnotation(TypeElement annotationElement, RoundEnvironment roundEnv) {
    roundEnv.getElementsAnnotatedWith(annotationElement)
            .stream()
            .filter(element -> element.getKind() == ElementKind.METHOD)
            // Element is always ExecutableElement because it is a method.
            .forEachOrdered(element -> {
                try {
                    processMethod((ExecutableElement) element);
                } catch (IOException e) {
                    final StringWriter writer = new StringWriter();
                    e.printStackTrace(new PrintWriter(writer));
                    processingEnv.getMessager().printMessage(
                            Kind.ERROR,
                            "Could not process all elements" + System.lineSeparator() + writer,
                            element);
                }
            });
}
 

@Override
public boolean process(final Set<? extends TypeElement> annotations, final RoundEnvironment roundEnv)
{
    Elements elementUtils = processingEnv.getElementUtils();
    TypeElement annotationElement = elementUtils.getTypeElement(MANAGED_ATTRIBUTE_VALUE_TYPE_CLASS_NAME);

    for (Element e : roundEnv.getElementsAnnotatedWith(annotationElement))
    {
        boolean isAbstract = isAbstract(annotationElement, e);
        if(!isAbstract)
        {
            checkAnnotationIsOnInterface(annotationElement, e);
        }
        if(!isContent(e))
        {
            checkAllMethodsAreAccessors(e, isAbstract);
        }
    }
    return false;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    Context context = ((JavacProcessingEnvironment) processingEnv).getContext();
    FSInfo fsInfo = context.get(FSInfo.class);

    round++;
    if (round == 1) {
        boolean expect = Boolean.valueOf(options.get("expect"));
        checkEqual("cache result", fsInfo.isDirectory(testDir), expect);
        initialFSInfo = fsInfo;
    } else {
        checkEqual("fsInfo", fsInfo, initialFSInfo);
    }

    return true;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  try {
    processImpl(roundEnv);
  } catch (Exception e) {
    // We don't allow exceptions of any kind to propagate to the compiler
    try (StringWriter stringWriter = new StringWriter(); PrintWriter printWriter = new PrintWriter(stringWriter)) {
      e.printStackTrace(printWriter);
      fatalError(stringWriter.toString());
    } catch (IOException ioe) {
      fatalError("Could not close resources " + ioe);
    }
  }
  // Universal processors should return false since other processor can be potentially acting on the same element
  return false;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  if (first) {
    processingEnv.getMessager().printMessage(Diagnostic.Kind.WARNING, "proc warning");
    try {
      JavaFileObject file = processingEnv.getFiler().createSourceFile("Gen.java");
      try (Writer writer = file.openWriter()) {
        writer.write("class Gen {}");
      }
    } catch (IOException e) {
      throw new UncheckedIOException(e);
    }
    first = false;
  }
  if (roundEnv.processingOver()) {
    processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "proc error");
  }
  return false;
}
 

public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  if (roundEnv.processingOver()) {
    getSession().close();
    return true;
  }

  for (TypeElement typeElement : annotations) {
    for (Element mainClass : roundEnv.getElementsAnnotatedWith(typeElement)) {
      JibBuild jib = mainClass.getAnnotation(JibBuild.class);
      if (jib == null) {
        continue;
      }
      process("jib", mainClass, JibBuild.class);
    }
  }
  return false;
}
 

private void buildMixin(Element element, RoundEnvironment roundEnv, Context context) {
    debugElement(element, "@Mixin");
    if (element.asType().getKind() != TypeKind.DECLARED) {
        error(element, "@Mixin must have a declared type, not %s", element.asType());
        return;
    }
    TypeElement type = (TypeElement) ((DeclaredType) element.asType()).asElement();
    CommandSpec mixin = buildCommand(type, context, roundEnv);

    logger.fine("Built mixin: " + mixin + " from " + element);
    if (EnumSet.of(ElementKind.FIELD, ElementKind.PARAMETER).contains(element.getKind())) {
        VariableElement variableElement = (VariableElement) element;
        MixinInfo mixinInfo = new MixinInfo(variableElement, mixin);

        CommandSpec mixee = buildCommand(mixinInfo.enclosingElement(), context, roundEnv);
        Set<MixinInfo> mixinInfos = context.mixinInfoMap.get(mixee);
        if (mixinInfos == null) {
            mixinInfos = new HashSet<MixinInfo>(2);
            context.mixinInfoMap.put(mixee, mixinInfos);
        }
        mixinInfos.add(mixinInfo);
        logger.fine("Mixin name=" + mixinInfo.mixinName() + ", target command=" + mixee.userObject());
    }
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  if (roundEnv.processingOver()) {
    return false;
  }

  List<BuckModuleDescriptor> buckModuleDescriptors =
      collectBuckModuleDescriptors(annotations, roundEnv);

  if (buckModuleDescriptors.isEmpty()) {
    return false;
  }

  assertOneBuckModuleDescriptor(buckModuleDescriptors);

  return generateBuckModuleAdapterPlugin(buckModuleDescriptors.get(0));
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    if (!ran) {
        ran = true;
        ExecutableElement m = getFirstMethodIn("C");
        System.err.println("method: " + m);

        TypeMirror type = (DeclaredType)m.getParameters().get(0).asType();
        System.err.println("parameters[0]: " + type);
        if (!isParameterized(type))
            throw new AssertionError(type);

        type = ((ExecutableType)m.asType()).getParameterTypes().get(0);
        System.err.println("parameterTypes[0]: " + type);
        if (!isParameterized(type))
            throw new AssertionError(type);
        System.err.println();
    }
    return true;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    TestElementScanner s = new TestElementScanner();
    for (Element e: roundEnv.getRootElements()) {
        s.scan(e);
    }
    return true;
}
 

@Override
public boolean process(Set<? extends TypeElement> set, RoundEnvironment roundEnvironment) {
    if (!roundEnvironment.processingOver()) {
        processAnnotations(roundEnvironment);
    }
    return true;
}
 

private void buildOptions(RoundEnvironment roundEnv, Context context) {
    logger.fine("Building options...");
    Set<? extends Element> explicitOptions = roundEnv.getElementsAnnotatedWith(Option.class);
    for (Element element : explicitOptions) {
        buildOption(element, context);
    }
}
 

@Override
public boolean process(Set<? extends TypeElement> set, RoundEnvironment roundEnvironment) {
    if (set != null && !set.isEmpty()) {
        Set<? extends Element> elements = roundEnvironment.getElementsAnnotatedWith(InjectXModule.class);
        if (elements == null || elements.size() <= 0) {
            return true;
        }

        mLogger.info(String.format("解析注解：%s", InjectXModule.class.getSimpleName()));
        try {
            // key：依赖注入变量的目标类全限定名；value：目标类中携带@InjectXModule的Element的map集合
            Map<String, List<Element>> targetInjectElements = new LinkedHashMap<>();
            // 扫描注解InjectXModule
            for (Element injectElement : elements) {
                verify(injectElement);

                String fullClzName = injectElement.getEnclosingElement().toString();
                List<Element> injectElements = targetInjectElements.get(fullClzName);
                if (injectElements == null) {
                    injectElements = new ArrayList<>();
                    targetInjectElements.put(fullClzName, injectElements);
                }
                injectElements.add(injectElement);
            }

            // 生成代码
            generateCode(targetInjectElements);
        } catch (ProcessException e) {
            mLogger.error(e.fillInStackTrace());
        }
        return true;
    }
    return false;
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
	model = new PrefsModel();

	parseBindType(roundEnv);

	// Put all @BindSharedPreferences elements in beanElements
	for (Element item : roundEnv.getElementsAnnotatedWith(BindSharedPreferences.class)) {
		AssertKripton.assertTrueOrInvalidKindForAnnotationException(item.getKind() == ElementKind.CLASS, item, BindSharedPreferences.class);

		analyzeSharedPreferences((TypeElement) item);
	}

	return true;
}
 

private void buildParameters(RoundEnvironment roundEnv, Context context) {
    logger.fine("Building parameters...");
    Set<? extends Element> explicitParameters = roundEnv.getElementsAnnotatedWith(Parameters.class);
    for (Element element : explicitParameters) {
        buildParameter(element, context);
    }
}
 

@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  Set<? extends Element> builderTypes =
      roundEnv.getElementsAnnotatedWith(RetroFacebook.Builder.class);
  if (!SuperficialValidation.validateElements(builderTypes)) {
    return false;
  }
  for (Element annotatedType : builderTypes) {
    // Double-check that the annotation is there. Sometimes the compiler gets confused in case of
    // erroneous source code. SuperficialValidation should protect us against this but it doesn't
    // cost anything to check again.
    if (isAnnotationPresent(annotatedType, RetroFacebook.Builder.class)) {
      validate(
          annotatedType,
          "@RetroFacebook.Builder can only be applied to a class or interface inside an"
              + " @RetroFacebook class");
    }
  }

  Set<? extends Element> validateMethods =
      roundEnv.getElementsAnnotatedWith(RetroFacebook.Validate.class);
  if (!SuperficialValidation.validateElements(validateMethods)) {
    return false;
  }
  for (Element annotatedMethod : validateMethods) {
    if (isAnnotationPresent(annotatedMethod, RetroFacebook.Validate.class)) {
      validate(
          annotatedMethod,
          "@RetroFacebook.Validate can only be applied to a method inside an @RetroFacebook class");
    }
  }
  return false;
}
 

public boolean process(Set<? extends TypeElement> annotations,
                       RoundEnvironment roundEnvironment) {
    if (!roundEnvironment.processingOver())
        for(Element element : roundEnvironment.getRootElements())
            element.accept(new LocalVarAllergy(), null);
    return true;
}
 

void init(Set<? extends TypeElement> annotations, RoundEnvironment round, ProcessingEnvironment processing) {
  this.components = MutableClassToInstanceMap.create();
  this.processing = processing;
  this.round = round;
  this.annotations = ImmutableSet.copyOf(annotations);
  this.initialized = true;
}
 

@Override
public final boolean process(
    Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  if (!testsRan) {
    testsRan = true;
    typeUtil = processingEnv.getTypeUtils();
    runTests();
  }
  return false;
}