com.sleepcamel.bsoneer.processor.domain.ModelExt.java Source code

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Here is the source code for com.sleepcamel.bsoneer.processor.domain.ModelExt.java

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/*
 * Copyright (C) 2015 Sleepcamel.
 *
 * 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
 *
 * http://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 com.sleepcamel.bsoneer.processor.domain;

import java.util.Collection;

import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.NestingKind;
import javax.lang.model.element.TypeElement;

import com.google.common.base.Optional;

public class ModelExt {
    private ModelExt() {
    }

    public static boolean hasAnnotation(Element e, String annotationType) {
        for (AnnotationMirror mirror : e.getAnnotationMirrors()) {
            String typeName = ((TypeElement) mirror.getAnnotationType().asElement()).getQualifiedName().toString();
            if (typeName.equals(annotationType)) {
                return true;
            }
        }
        return false;
    }

    public static boolean hasAnyAnnotation(Element e, Collection<String> annotationTypes) {
        return hasAnyAnnotation(e, annotationTypes.toArray(new String[annotationTypes.size()]));
    }

    public static boolean hasAnyAnnotation(Element e, String... annotationTypes) {
        for (AnnotationMirror mirror : e.getAnnotationMirrors()) {
            String typeName = ((TypeElement) mirror.getAnnotationType().asElement()).getQualifiedName().toString();

            for (String annotationType : annotationTypes) {
                if (typeName.equals(annotationType)) {
                    return true;
                }
            }
        }
        return false;
    }

    public static Optional<TypeElement> findTopLevelType(Element e) {
        while (e != null && !isTopLevelType(e)) {
            e = e.getEnclosingElement();
        }
        return Optional.of((TypeElement) e);
    }

    public static boolean isTopLevelType(Element e) {
        if (!ElementKind.CLASS.equals(e.getKind())) {
            return false;
        }

        TypeElement te = (TypeElement) e;
        if (!NestingKind.TOP_LEVEL.equals(te.getNestingKind())) {
            return false;
        }

        return true;
    }
}