br.com.jarch.apt.processor.PeriodProcessor Maven / Gradle / Ivy

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package br.com.jarch.apt.processor;

import br.com.jarch.annotation.JArchValidPeriod;
import br.com.jarch.util.ProcessorUtils;

import javax.annotation.processing.*;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import java.time.LocalDate;
import java.time.YearMonth;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

@SupportedAnnotationTypes({"br.com.jarch.annotation.JArchValidPeriod", "br.com.jarch.annotation.JArchValidPeriod.List"})
public class PeriodProcessor extends AbstractProcessor {

    @Override
    public boolean process(final Set annotations, final RoundEnvironment roundEnv) {
        ProcessorUtils.processingEnvironment = processingEnv;
	ProcessorUtils.messageMandatoryWarning("Processando: " + getClass().getSimpleName());

        try {
            roundEnv
                    .getElementsAnnotatedWithAny(Set.of(JArchValidPeriod.class, JArchValidPeriod.List.class))
                    .forEach(element -> {
                        ProcessorUtils.messageAnalyzing(getClass(), element);
                        validPeriod(element);
                    });

        } catch (Exception ex) {
            ProcessorUtils.messageError("JARCH ERROR: Erro no APT " + getClass().getSimpleName() + " Mensagem: " + ex.getMessage());
        }

        return false;
    }

    @Override
    public SourceVersion getSupportedSourceVersion() {
        return SourceVersion.latest();
    }

    private void validPeriod(Element element) {

        for (JArchValidPeriod anotacao : element.getAnnotationsByType(JArchValidPeriod.class)) {
            final TypeElement classeElement = (TypeElement) element;
            existsFieldPeriod(processingEnv, element, classeElement, anotacao.fieldBegin());
            existsFieldPeriod(processingEnv, element, classeElement, anotacao.fieldEnd());
            validaTypesEquals(processingEnv, element, classeElement, anotacao.fieldBegin(), anotacao.fieldEnd());
        }
    }

    private static void existsFieldPeriod(ProcessingEnvironment processingEnv, Element elementAtual, TypeElement classeElement, String field) {
        List> classTypes = new ArrayList<>();

        classTypes.add(Date.class);
        classTypes.add(LocalDate.class);
        classTypes.add(YearMonth.class);

        if (!ProcessorUtils.existsFieldType(classeElement, field, classTypes)) {
            ProcessorUtils.messageError("JARCH ERROR: Atributo " + field + " dos tipos [" + classTypes.stream().map(c -> c.getName()).collect(Collectors.joining(", ")) + "] não localizado na anotação @JArchValidPeriod", elementAtual);
        }
    }

    private static void validaTypesEquals(ProcessingEnvironment processingEnv, Element elementAtual, TypeElement classeElement, String field1, String field2) {
        try {
            String classAttribute1 = ProcessorUtils.classTypeField(classeElement, field1);
            String classAttribute2 = ProcessorUtils.classTypeField(classeElement, field2);

            if (!classAttribute1.equals(classAttribute2)) {
                throw new Exception("Tipo do atributo " + field1 + " (" + classAttribute1 + ")" + " diferente do tipo atributo " + field2 + " (" + classAttribute2 + ")" + " na anotação @JArchValidPeriod");
            }
        } catch (Exception ex) {
            ProcessorUtils.messageError("JARCH ERROR: " + ex.getMessage(), classeElement);
        }
    }

    @Override
    public Iterable getCompletions(Element element, AnnotationMirror annotation, ExecutableElement member, String userText) {
        return super.getCompletions(element, annotation, member, userText);
    }
}