Examples with BeanElementVisitor io.micronaut.inject.visitor.BeanElementVisitor used on opensource projects

Example 1 with BeanElementVisitor

use of io.micronaut.inject.visitor.BeanElementVisitor in project micronaut-core by micronaut-projects.

the class BeanDefinitionInjectProcessor method process.

@Override
public final boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    processingOver = roundEnv.processingOver();
    if (!processingOver) {
        annotations = annotations.stream().filter(ann -> {
            final String name = ann.getQualifiedName().toString();
            String packageName = NameUtils.getPackageName(name);
            return !name.equals(AnnotationUtil.KOTLIN_METADATA) && !AnnotationUtil.STEREOTYPE_EXCLUDES.contains(packageName);
        }).filter(ann -> annotationUtils.hasStereotype(ann, ANNOTATION_STEREOTYPES) || isProcessedAnnotation(ann.getQualifiedName().toString())).collect(Collectors.toSet());
        if (!annotations.isEmpty()) {
            TypeElement groovyObjectTypeElement = elementUtils.getTypeElement("groovy.lang.GroovyObject");
            TypeMirror groovyObjectType = groovyObjectTypeElement != null ? groovyObjectTypeElement.asType() : null;
            // accumulate all the class elements for all annotated elements
            annotations.forEach(annotation -> roundEnv.getElementsAnnotatedWith(annotation).stream().filter(element -> element.getKind() != ANNOTATION_TYPE).forEach(element -> {
                TypeElement typeElement = modelUtils.classElementFor(element);
                if (typeElement == null) {
                    return;
                }
                if (element.getKind() == ENUM) {
                    final AnnotationMetadata am = annotationUtils.getAnnotationMetadata(element);
                    if (isDeclaredBeanInMetadata(am)) {
                        error(element, "Enum types cannot be defined as beans");
                    }
                    return;
                }
                // skip Groovy code, handled by InjectTransform. Required for GroovyEclipse compiler
                if ((groovyObjectType != null && typeUtils.isAssignable(typeElement.asType(), groovyObjectType))) {
                    return;
                }
                String name = typeElement.getQualifiedName().toString();
                if (!beanDefinitions.contains(name) && !processed.contains(name) && !name.endsWith(BeanDefinitionVisitor.PROXY_SUFFIX)) {
                    boolean isInterface = JavaModelUtils.resolveKind(typeElement, ElementKind.INTERFACE).isPresent();
                    if (!isInterface) {
                        beanDefinitions.add(name);
                    } else {
                        if (annotationUtils.hasStereotype(typeElement, INTRODUCTION_TYPE) || annotationUtils.hasStereotype(typeElement, ConfigurationReader.class)) {
                            beanDefinitions.add(name);
                        }
                    }
                }
            }));
        }
        // remove already processed in previous round
        for (String name : processed) {
            beanDefinitions.remove(name);
        }
        // process remaining
        int count = beanDefinitions.size();
        if (count > 0) {
            note("Creating bean classes for %s type elements", count);
            beanDefinitions.forEach(className -> {
                if (processed.add(className)) {
                    final TypeElement refreshedClassElement = elementUtils.getTypeElement(className);
                    try {
                        final AnnBeanElementVisitor visitor = new AnnBeanElementVisitor(refreshedClassElement);
                        refreshedClassElement.accept(visitor, className);
                        visitor.getBeanDefinitionWriters().forEach((name, writer) -> {
                            String beanDefinitionName = writer.getBeanDefinitionName();
                            if (processed.add(beanDefinitionName)) {
                                processBeanDefinitions(writer);
                            }
                        });
                        AnnotationUtils.invalidateMetadata(refreshedClassElement);
                    } catch (PostponeToNextRoundException e) {
                        processed.remove(className);
                    }
                }
            });
            AnnotationUtils.invalidateCache();
        }
    }
    /*
        Since the underlying Filer expects us to write only once into a file we need to make sure it happens in the last
        processing round.
        */
    if (processingOver) {
        try {
            writeBeanDefinitionsToMetaInf();
            for (BeanElementVisitor<?> visitor : BeanElementVisitor.VISITORS) {
                if (visitor.isEnabled()) {
                    try {
                        visitor.finish(javaVisitorContext);
                    } catch (Exception e) {
                        javaVisitorContext.fail("Error finalizing bean element visitor [" + visitor.getClass().getName() + "]: " + e.getMessage(), null);
                    }
                }
            }
            final List<AbstractBeanDefinitionBuilder> beanElementBuilders = javaVisitorContext.getBeanElementBuilders();
            if (CollectionUtils.isNotEmpty(beanElementBuilders)) {
                try {
                    AbstractBeanDefinitionBuilder.writeBeanDefinitionBuilders(classWriterOutputVisitor, beanElementBuilders);
                } catch (IOException e) {
                    // raise a compile error
                    String message = e.getMessage();
                    error("Unexpected error: %s", message != null ? message : e.getClass().getSimpleName());
                }
            }
        } finally {
            AnnotationUtils.invalidateCache();
            AbstractAnnotationMetadataBuilder.clearMutated();
            JavaAnnotationMetadataBuilder.clearCaches();
        }
    }
    return false;
}