xref: /frameworks/data-binding/compiler/src/main/java/android/databinding/tool/reflection/annotation/AnnotationMethod.java

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * 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.android.databinding.reflection;

import java.util.List;

import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.Modifier;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.ExecutableType;
import javax.lang.model.type.TypeMirror;

public class AnnotationMethod implements ModelMethod {
    final ExecutableElement mMethod;
    final DeclaredType mDeclaringType;

    public AnnotationMethod(DeclaredType declaringType, ExecutableElement method) {
        mDeclaringType = declaringType;
        mMethod = method;
    }

    @Override
    public ModelClass getDeclaringClass() {
        return new AnnotationClass(mDeclaringType);
    }

    @Override
    public ModelClass[] getParameterTypes() {
        List<? extends VariableElement> parameters = mMethod.getParameters();
        ModelClass[] parameterTypes = new ModelClass[parameters.size()];
        for (int i = 0; i < parameters.size(); i++) {
            parameterTypes[i] = new AnnotationClass(parameters.get(i).asType());
        }
        return parameterTypes;
    }

    @Override
    public String getName() {
        return mMethod.getSimpleName().toString();
    }

    @Override
    public ModelClass getReturnType(List<ModelClass> args) {
        ExecutableType executableType = (ExecutableType) AnnotationAnalyzer.instance.getTypeUtils().asMemberOf(mDeclaringType, mMethod);
        TypeMirror returnType = executableType.getReturnType();
        // TODO: support argument-supplied types
        // for example: public T[] toArray(T[] arr)
        return new AnnotationClass(returnType);
    }

    @Override
    public boolean isPublic() {
        return mMethod.getModifiers().contains(Modifier.PUBLIC);
    }

    @Override
    public boolean isStatic() {
        return mMethod.getModifiers().contains(Modifier.STATIC);
    }
}