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Annotations Processor for Blueprint, a compact framework for constructing mvp architectures in Android

There is a newer version: 2.5.0

/*
 * Copyright 2017 Comcast Cable Communications Management, LLC
 * 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.xfinity.blueprint_compiler;

import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;

import static javax.tools.Diagnostic.Kind.ERROR;
import static javax.tools.Diagnostic.Kind.NOTE;
import static javax.tools.Diagnostic.Kind.WARNING;

final class Messager {

  private javax.annotation.processing.Messager messager;

  void init(ProcessingEnvironment processingEnvironment) {
    messager = processingEnvironment.getMessager();
  }

  void note(Element e, String msg, Object... args) {
    checkInitialized();
    messager.printMessage(NOTE, String.format(msg, args), e);
  }

  void warn(Element e, String msg, Object... args) {
    checkInitialized();
    messager.printMessage(WARNING, String.format(msg, args), e);
  }

  void error(Element e, String msg, Object... args) {
    checkInitialized();
    messager.printMessage(ERROR, String.format(msg, args), e);
  }

  private void checkInitialized() {
    if (messager == null) {
      throw new IllegalStateException("Messager not ready. Have you called init()?");
    }
  }
}