br.com.objectos.way.pojo.plugin.CustomFieldContribution Maven / Gradle / Ivy

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/*
 * Copyright 2014-2015 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.way.pojo.plugin;

import java.util.List;
import java.util.Objects;

import javax.lang.model.element.Modifier;

import com.squareup.javapoet.CodeBlock;
import com.squareup.javapoet.FieldSpec;
import com.squareup.javapoet.ParameterSpec;
import com.squareup.javapoet.TypeName;
import com.squareup.javapoet.TypeSpec;

/**
 * @author [email protected] (Marcio Endo)
 */
class CustomFieldContribution extends Contribution implements BuilderCustomField {

  private final TypeName typeName;
  private final String name;

  private final CodeBlock constructorAssignment;
  private final ParameterSpec constructorParameter;

  private CustomFieldContribution(TypeName typeName,
                                  String name,
                                  CodeBlock constructorAssignment,
                                  ParameterSpec constructorParameter) {
    this.typeName = typeName;
    this.name = name;
    this.constructorAssignment = constructorAssignment;
    this.constructorParameter = constructorParameter;
  }

  public static CustomFieldContribution of(TypeName typeName, String name) {
    Objects.requireNonNull(typeName);
    Objects.requireNonNull(name);
    return new CustomFieldContribution(
        typeName,
        name,
        CodeBlock.builder()
            .addStatement("this.$1L = $1L", name)
            .build(),
        ParameterSpec.builder(typeName, name)
            .build());
  }

  @Override
  public CodeBlock builderConstructorBody() {
    return constructorAssignment;
  }

  @Override
  public ParameterSpec builderConstructorParameter() {
    return constructorParameter;
  }

  @Override
  public FieldSpec builderField() {
    return FieldSpec.builder(typeName, name)
        .addModifiers(Modifier.PRIVATE, Modifier.FINAL)
        .build();
  }

  @Override
  public String name() {
    return name;
  }

  @Override
  void accept(TypeSpec.Builder type) {
    type.addField(pojoField());
  }

  @Override
  void acceptBuilder(br.com.objectos.way.pojo.plugin.BuilderConfiguration builder, Class generator) {
    builder.generatedBy(generator);
    builder.addCustomField(this);
  }

  @Override
  void acceptPojoConstructor(PojoConstructor constructor) {
    constructor.addCustomParameter(constructorParameter);
    constructor.addCode(constructorAssignment);
  }

  @Override
  void acceptPojoPropertyPlugin(List pluginList) {
    // noop
  }

  private FieldSpec pojoField() {
    return FieldSpec.builder(typeName, name)
        .addModifiers(Modifier.FINAL)
        .build();
  }

}