io.micronaut.ast.groovy.visitor.GroovyEnumElement Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of micronaut-inject-groovy Show documentation
Natively Cloud Native
The newest version!
/*
 * Copyright 2017-2020 original authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.micronaut.ast.groovy.visitor;

import io.micronaut.core.annotation.Internal;
import io.micronaut.inject.ast.ClassElement;
import io.micronaut.inject.ast.EnumConstantElement;
import io.micronaut.inject.ast.EnumElement;
import io.micronaut.inject.ast.annotation.ElementAnnotationMetadataFactory;
import org.codehaus.groovy.ast.FieldNode;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Implementation of {@link EnumElement} for Groovy.
 *
 * @author graemerocher
 * @since 1.0
 */
@Internal
class GroovyEnumElement extends GroovyClassElement implements EnumElement {

    protected List enumConstants;
    protected List values;

    /**
     * @param visitorContext The visitor context
     * @param nativeElement The native element
     * @param annotationMetadataFactory The annotation metadata factory
     */
    GroovyEnumElement(GroovyVisitorContext visitorContext,
                      GroovyNativeElement nativeElement,
                      ElementAnnotationMetadataFactory annotationMetadataFactory) {
        this(visitorContext, nativeElement, annotationMetadataFactory, 0);
    }

    /**
     * @param visitorContext The visitor context
     * @param nativeElement The native element
     * @param annotationMetadataFactory The annotation metadata
     * @param arrayDimensions The number of array dimensions factory
     */
    GroovyEnumElement(GroovyVisitorContext visitorContext,
                      GroovyNativeElement nativeElement,
                      ElementAnnotationMetadataFactory annotationMetadataFactory,
                      int arrayDimensions) {
        super(visitorContext, nativeElement, annotationMetadataFactory, null, arrayDimensions);
    }

    @Override
    public List values() {
        if (values != null) {
            return values;
        }
        initEnum();
        return values;
    }

    @Override
    public List elements() {
        if (enumConstants != null) {
            return enumConstants;
        }
        initEnum();
        return enumConstants;
    }

    private void initEnum() {
        values = new ArrayList<>();
        enumConstants = new ArrayList<>();
        for (FieldNode field : classNode.getFields()) {
            if (field.getName().equals("MAX_VALUE") || field.getName().equals("MIN_VALUE")) {
                continue;
            }
            if (field.isEnum()) {
                values.add(field.getName());
                enumConstants.add(new GroovyEnumConstantElement(this, visitorContext, field, elementAnnotationMetadataFactory));
            }
        }

        values = Collections.unmodifiableList(values);
        enumConstants = Collections.unmodifiableList(enumConstants);
    }

    @Override
    public ClassElement withArrayDimensions(int arrayDimensions) {
        return new GroovyEnumElement(visitorContext, getNativeType(), elementAnnotationMetadataFactory, arrayDimensions);
    }

}