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

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/*
 * Copyright 2016 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 br.com.objectos.code.MethodInfo;
import br.com.objectos.html.boot.Attribute;

import com.squareup.javapoet.MethodSpec;

/**
 * @author [email protected] (Marcio Endo)
 */
class AttributeMethod {

  private final MethodInfo methodInfo;

  private AttributeMethod(MethodInfo methodInfo) {
    this.methodInfo = methodInfo;
  }

  public static AttributeMethod of(MethodInfo methodInfo) {
    return new AttributeMethod(methodInfo);
  }

  public MethodSpec baseTypeMethodSpec() {
    return methodInfo.overrideWriter()
        .returns(BaseTypeType.E)
        .addStatement("attr($S, $L)", attributeName(), parameterName())
        .addStatement("return self()")
        .write();
  }

  private String attributeName() {
    return methodInfo.annotationInfo(Attribute.class)
        .flatMap(ann -> ann.stringValue("name"))
        .orElse(methodInfo.name());
  }

  private String parameterName() {
    return methodInfo.parameterInfoStream()
        .findFirst()
        .get()
        .name();
  }

}