/*
    * Copyright (C) 2010 Atlassian
    *
    * 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.atlassian.jira.rest.client.internal.json;
  
  import org.codehaus.jettison.json.JSONException;
  import org.codehaus.jettison.json.JSONObject;
  
  class JsonWeakParserForJsonObject<T> implements JsonWeakParser<T> {
      private final JsonObjectParser<T> jsonParser;
  
      public JsonWeakParserForJsonObject(JsonObjectParser<T> jsonParser) {
          this.jsonParser = jsonParser;
      }
  
      private <T> T convert(Object o, Class<T> clazz) throws JSONException {
          try {
              return clazz.cast(o);
          } catch (ClassCastException e) {
              throw new JSONException("Expected [" + clazz.getSimpleName() + "], but found [" + o.getClass().getSimpleName() + "]");
          }
      }
  
      @Override
      public T parse(Object o) throws JSONException {
          return jsonParser.parse(convert(o, JSONObject.class));
      }
  }