content: /*
   * Copyright 1999-2018 Alibaba Group.
   *
   * 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.alibaba.fastjson.serializer;
  
  import java.io.IOException;
  import java.lang.reflect.ParameterizedType;
  import java.lang.reflect.Type;
  import java.util.*;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.JSONObject;
  
  /**
   * @author wenshao[szujobs@hotmail.com]
   */
  public class MapSerializer extends SerializeFilterable implements ObjectSerializer {
  
      public static MapSerializer instance = new MapSerializer();
  
      private static final int NON_STRINGKEY_AS_STRING = SerializerFeature.of(
              new SerializerFeature[] {
                      SerializerFeature.BrowserCompatible,
                      SerializerFeature.WriteNonStringKeyAsString,
                      SerializerFeature.BrowserSecure});
  
      public void write(JSONSerializer serializer
              , Object object
              , Object fieldName
              , Type fieldType
              , int features) throws IOException {
          write(serializer, object, fieldName, fieldType, features, false);
      }
  
      @SuppressWarnings({ "rawtypes"})
      public void write(JSONSerializer serializer
              , Object object
              , Object fieldName
              , Type fieldType
              , int features //
              , boolean unwrapped) throws IOException {
          SerializeWriter out = serializer.out;
  
          if (object == null) {
              out.writeNull();
              return;
          }
  
          Map<?, ?> map = (Map<?, ?>) object;
          final int mapSortFieldMask = SerializerFeature.MapSortField.mask;
          if ((out.features & mapSortFieldMask) != 0 || (features & mapSortFieldMask) != 0) {
              if (map instanceof JSONObject) {
                  map = ((JSONObject) map).getInnerMap();
              }
  
              if ((!(map instanceof SortedMap)) && !(map instanceof LinkedHashMap)) {
                  try {
                      map = new TreeMap(map);
                  } catch (Exception ex) {
                      // skip
                  }
              }
          }
  
          if (serializer.containsReference(object)) {
              serializer.writeReference(object);
              return;
          }
  
          SerialContext parent = serializer.context;
          serializer.setContext(parent, object, fieldName, 0);
          try {
              if (!unwrapped) {
                  out.write('{');
              }
  
              serializer.incrementIndent();
  
              Class<?> preClazz = null;
              ObjectSerializer preWriter = null;
  
              boolean first = true;
  
              if (out.isEnabled(SerializerFeature.WriteClassName)) {
                  String typeKey = serializer.config.typeKey;
                  Class<?> mapClass = map.getClass();
                  boolean containsKey = (mapClass == JSONObject.class || mapClass == HashMap.class || mapClass == LinkedHashMap.class) 
                          && map.containsKey(typeKey);
                  if (!containsKey) {
                      out.writeFieldName(typeKey);
                      out.writeString(object.getClass().getName());
                      first = false;
                  }
              }
  
              for (Map.Entry entry : map.entrySet()) {
                  Object value = entry.getValue();
  
                  Object entryKey = entry.getKey();
  
                  {
                      List<PropertyPreFilter> preFilters = serializer.propertyPreFilters;
                      if (preFilters != null && preFilters.size() > 0) {
                          if (entryKey == null || entryKey instanceof String) {
                              if (!this.applyName(serializer, object, (String) entryKey)) {
                                  continue;
                              }
                          } else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
                              String strKey = JSON.toJSONString(entryKey);
                              if (!this.applyName(serializer, object, strKey)) {
                                  continue;
                              }
                          }
                      }
                  }
                  {
                      List<PropertyPreFilter> preFilters = this.propertyPreFilters;
                      if (preFilters != null && preFilters.size() > 0) {
                          if (entryKey == null || entryKey instanceof String) {
                              if (!this.applyName(serializer, object, (String) entryKey)) {
                                  continue;
                              }
                          } else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
                              String strKey = JSON.toJSONString(entryKey);
                              if (!this.applyName(serializer, object, strKey)) {
                                  continue;
                              }
                          }
                      }
                  }
                  
                  {
                      List<PropertyFilter> propertyFilters = serializer.propertyFilters;
                      if (propertyFilters != null && propertyFilters.size() > 0) {
                          if (entryKey == null || entryKey instanceof String) {
                              if (!this.apply(serializer, object, (String) entryKey, value)) {
                                  continue;
                              }
                          } else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
                              String strKey = JSON.toJSONString(entryKey);
                              if (!this.apply(serializer, object, strKey, value)) {
                                  continue;
                              }
                          }
                      }
                  }
                  {
                      List<PropertyFilter> propertyFilters = this.propertyFilters;
                      if (propertyFilters != null && propertyFilters.size() > 0) {
                          if (entryKey == null || entryKey instanceof String) {
                              if (!this.apply(serializer, object, (String) entryKey, value)) {
                                  continue;
                              }
                          } else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
                              String strKey = JSON.toJSONString(entryKey);
                              if (!this.apply(serializer, object, strKey, value)) {
                                  continue;
                              }
                          }
                      }
                  }
                  
                  {
                      List<NameFilter> nameFilters = serializer.nameFilters;
                      if (nameFilters != null && nameFilters.size() > 0) {
                          if (entryKey == null || entryKey instanceof String) {
                              entryKey = this.processKey(serializer, object, (String) entryKey, value);
                          } else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
                              String strKey = JSON.toJSONString(entryKey);
                              entryKey = this.processKey(serializer, object, strKey, value);
                          }
                      }
                  }
                  {
                      List<NameFilter> nameFilters = this.nameFilters;
                      if (nameFilters != null && nameFilters.size() > 0) {
                          if (entryKey == null || entryKey instanceof String) {
                              entryKey = this.processKey(serializer, object, (String) entryKey, value);
                          } else if (entryKey.getClass().isPrimitive() || entryKey instanceof Number) {
                              String strKey = JSON.toJSONString(entryKey);
                              entryKey = this.processKey(serializer, object, strKey, value);
                          }
                      }
                  }
  
                  {
                      if (entryKey == null || entryKey instanceof String) {
                          value = this.processValue(serializer, null, object, (String) entryKey, value, features);
                      } else {
                          boolean objectOrArray = entryKey instanceof Map || entryKey instanceof Collection;
                          if (!objectOrArray) {
                              String strKey = JSON.toJSONString(entryKey);
                              value = this.processValue(serializer, null, object, strKey, value, features);
                          }
                      }
                  }
  
                  if (value == null) {
                      if (!SerializerFeature.isEnabled(out.features, features, SerializerFeature.WriteMapNullValue)) {
                          continue;
                      }
                  }
  
                  if (entryKey instanceof String) {
                      String key = (String) entryKey;
  
                      if (!first) {
                          out.write(',');
                      }
  
                      if (out.isEnabled(SerializerFeature.PrettyFormat)) {
                          serializer.println();
                      }
                      out.writeFieldName(key, true);
                  } else {
                      if (!first) {
                          out.write(',');
                      }
  
                      if ((out.isEnabled(NON_STRINGKEY_AS_STRING) || SerializerFeature.isEnabled(features, SerializerFeature.WriteNonStringKeyAsString))
                              && !(entryKey instanceof Enum)) {
                          String strEntryKey = JSON.toJSONString(entryKey);
                          serializer.write(strEntryKey);
                      } else {
                          serializer.write(entryKey);
                      }
  
                      out.write(':');
                  }
  
                  first = false;
  
                  if (value == null) {
                      out.writeNull();
                      continue;
                  }
  
                  Class<?> clazz = value.getClass();
  
                  if (clazz != preClazz) {
                      preClazz = clazz;
                      preWriter = serializer.getObjectWriter(clazz);
                  }
  
                  if (SerializerFeature.isEnabled(features, SerializerFeature.WriteClassName)
                          && preWriter instanceof JavaBeanSerializer) {
                      Type valueType = null;
                      if (fieldType instanceof ParameterizedType) {
                          ParameterizedType parameterizedType = (ParameterizedType) fieldType;
                          Type[] actualTypeArguments = parameterizedType.getActualTypeArguments();
                          if (actualTypeArguments.length == 2) {
                              valueType = actualTypeArguments[1];
                          }
                      }
  
                      JavaBeanSerializer javaBeanSerializer = (JavaBeanSerializer) preWriter;
                      javaBeanSerializer.writeNoneASM(serializer, value, entryKey, valueType, features);
                  } else {
                      preWriter.write(serializer, value, entryKey, null, features);
                  }
              }
          } finally {
              serializer.context = parent;
          }
  
          serializer.decrementIdent();
          if (out.isEnabled(SerializerFeature.PrettyFormat) && map.size() > 0) {
              serializer.println();
          }
  
          if (!unwrapped) {
              out.write('}');
          }
      }
  
  }
  