text: /*
   * Copyright (C) 2010 The Android Open Source Project
   *
   * 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.
   */
  
  #ifndef A_MESSAGE_H_
  
  #define A_MESSAGE_H_
  
  #include "foundation/ABase.h"
  #include "foundation/ALooper.h"
  #include "foundation/LightRefBase.h"
  #include "foundation/StrongPointer.h"
  #include "foundation/ABuffer.h"
  
  #include <stdint.h>
  #include <sys/types.h>
  typedef int32_t handler_id;
  
  struct AString;
  
  struct AMessage :public LightRefBase<AMessage>{             
      AMessage (uint32_t what = 0, handler_id target = 0);
  
      void setWhat(uint32_t what);
      uint32_t what() const;
  
      void setTarget(handler_id target);
      handler_id target() const;
  
      void setInt32(const char *name, int32_t value);
      void setInt64(const char *name, int64_t value);
      void setSize(const char *name, size_t value);
      void setFloat(const char *name, float value);
      void setDouble(const char *name, double value);
      void setPointer(const char *name, void *value);
      void setString(const char *name, const char *s, ssize_t len = -1);
  //    void setObject(const char *name, const sp<RefBase> &obj);
      void setMessage(const char *name, const sp<AMessage> &obj);
      void setBuffer(const char *name, const sp<ABuffer> &obj);
      bool findInt32(const char *name, int32_t *value) const;
      bool findInt64(const char *name, int64_t *value) const;
      bool findSize(const char *name, size_t *value) const;
      bool findFloat(const char *name, float *value) const;
      bool findDouble(const char *name, double *value) const;
      bool findPointer(const char *name, void **value) const;
      bool findString(const char *name, AString *value) const;
  //    bool findObject(const char *name, sp<RefBase> *obj) const;
      bool findMessage(const char *name, sp<AMessage> *obj) const;
  	bool findBuffer(const char *name, sp<ABuffer> *obj) const;
  
      void post(int64_t delayUs = 0);
  
      AMessage* dup() const;
  
      AString debugString(int32_t indent = 0) const;
  
  
  //protected:
      virtual ~AMessage();
  
  private:
      enum Type {
          kTypeInt32,
          kTypeInt64,
          kTypeSize,
          kTypeFloat,
          kTypeDouble,
          kTypePointer,
          kTypeString,
          kTypeObject,
          kTypeMessage,
          kTypeBuffer,
      };
  
      uint32_t mWhat;
      handler_id mTarget;
  
      struct Item {
          union {
              int32_t int32Value;
              int64_t int64Value;
              size_t sizeValue;
              float floatValue;
              double doubleValue;
              void *ptrValue;
              AString *stringValue;
  			AMessage *msgValue;
  			ABuffer *bufValue;
          } u;
          const char *mName;
          Type mType;
      };
  
      enum {
          kMaxNumItems = 16
      };
      Item mItems[kMaxNumItems];
      size_t mNumItems;
  
      void clear();
      Item *allocateItem(const char *name);
      void freeItem(Item *item);
      const Item *findItem(const char *name, Type type) const;
  	DISALLOW_EVIL_CONSTRUCTORS(AMessage);
  
  };
  
  
  #endif  // A_MESSAGE_H_
  