content: package act.inject.param;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import org.osgl.util.E;
  import org.osgl.util.S;
  
  public enum HttpRequestParamEncode {
      /**
       * Example: `foo[bar][id]`
       */
      JQUERY() {
          @Override
          protected String _concat(String[] path, int len) {
              S.Buffer buf = S.buffer(path[0]);
              for (int i = 1; i < len; ++i) {
                  buf.append("[").append(path[i]).append("]");
              }
              return buf.toString();
          }
      },
  
      /**
       * Example: `foo.bar.id`
       */
      DOT_NOTATION() {
          @Override
          protected String _concat(String[] path, int len) {
              S.Buffer buf = S.buffer(path[0]);
              for (int i = 1; i < len; ++i) {
                  buf.append(".").append(path[i]);
              }
              return buf.toString();
          }
      };
  
      public final String concat(ParamKey key) {
          return concat(key.seq());
      }
  
      public final String concat(String[] path) {
          int len = path.length;
          E.illegalArgumentIf(len < 1);
          if (len == 1) {
              return path[0];
          }
          return _concat(path, len);
      }
  
      protected abstract String _concat(String[] path, int len);
  
      public static HttpRequestParamEncode next(HttpRequestParamEncode encode) {
          HttpRequestParamEncode[] all = values();
          int id = encode.ordinal();
          if (id < all.length - 1) {
              return all[id + 1];
          } else {
              return all[0];
          }
      }
  }
  