br.com.objectos.html.AttributeAnnotation Maven / Gradle / Ivy

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/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.html;

import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import javax.lang.model.element.Modifier;

import br.com.objectos.code.AnnotationInfo;
import br.com.objectos.core.lang.Strings;
import br.com.objectos.pojo.Pojo;
import br.com.objectos.testable.Testable;

import com.squareup.javapoet.ClassName;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.TypeName;
import com.squareup.javapoet.TypeVariableName;

/**
 * @author [email protected] (Marcio Endo)
 */
@Pojo
abstract class AttributeAnnotation implements Testable {

  abstract String name();
  abstract String identifier();
  abstract TypeName typeName();

  AttributeAnnotation() {
  }

  public static AttributeAnnotationBuilder builder() {
    return new AttributeAnnotationBuilderPojo();
  }

  public static List list(Optional maybeAttributes) {
    return maybeAttributes
        .flatMap(info -> info.annotationInfoArrayValue("value"))
        .map(list -> list.stream())
        .orElse(Stream.of())
        .map(AttributeAnnotation::of)
        .collect(Collectors.toList());
  }

  public static AttributeAnnotation of(AnnotationInfo annotationInfo) {
    String name = annotationInfo.stringValue("name").get();
    String maybeIdentifier = annotationInfo.stringValue("identifier").get();
    String identifier = Strings.isNullOrEmpty(maybeIdentifier) ? name : maybeIdentifier;
    return AttributeAnnotation.builder()
        .name(name)
        .identifier(identifier)
        .typeName(annotationInfo.simpleTypeInfoValue("type").get().typeName())
        .build();
  }

  public MethodSpec setter(ClassName returns) {
    return MethodSpec.methodBuilder(identifier())
        .addModifiers(Modifier.PUBLIC)
        .addParameter(typeName(), identifier())
        .returns(returns)
        .addStatement("attr($S, $L)", name(), identifier())
        .addStatement("return this")
        .build();
  }

  public MethodSpec setter(TypeVariableName returns) {
    return MethodSpec.methodBuilder(identifier())
        .addModifiers(Modifier.PUBLIC)
        .addParameter(typeName(), identifier())
        .returns(returns)
        .addStatement("attr($S, $L)", name(), identifier())
        .addStatement("return self()")
        .build();
  }

}