text: /**
   *
   *    Copyright (c) 2021 Project CHIP Authors
   *    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.
   */
  
  #include <inttypes.h>
  #include <stdarg.h>
  #include <stdio.h>
  
  #include "InvokeResponseIB.h"
  #include "MessageDefHelper.h"
  
  #include <app/AppBuildConfig.h>
  
  namespace chip {
  namespace app {
  #if CHIP_CONFIG_IM_ENABLE_SCHEMA_CHECK
  CHIP_ERROR InvokeResponseIB::Parser::CheckSchemaValidity() const
  {
      CHIP_ERROR err      = CHIP_NO_ERROR;
      int TagPresenceMask = 0;
      TLV::TLVReader reader;
  
      PRETTY_PRINT("InvokeResponseIB =");
      PRETTY_PRINT("{");
  
      // make a copy of the reader
      reader.Init(mReader);
  
      while (CHIP_NO_ERROR == (err = reader.Next()))
      {
          if (!TLV::IsContextTag(reader.GetTag()))
          {
              continue;
          }
          uint32_t tagNum = TLV::TagNumFromTag(reader.GetTag());
          switch (tagNum)
          {
          case to_underlying(Tag::kCommand):
              // check if this tag has appeared before
              VerifyOrReturnError(!(TagPresenceMask & (1 << to_underlying(Tag::kCommand))), CHIP_ERROR_INVALID_TLV_TAG);
              TagPresenceMask |= (1 << to_underlying(Tag::kCommand));
              {
                  CommandDataIB::Parser command;
                  ReturnErrorOnFailure(command.Init(reader));
  
                  PRETTY_PRINT_INCDEPTH();
                  ReturnErrorOnFailure(command.CheckSchemaValidity());
                  PRETTY_PRINT_DECDEPTH();
              }
              break;
          case to_underlying(Tag::kStatus):
              // check if this tag has appeared before
              VerifyOrReturnError(!(TagPresenceMask & (1 << to_underlying(Tag::kStatus))), CHIP_ERROR_INVALID_TLV_TAG);
              TagPresenceMask |= (1 << to_underlying(Tag::kStatus));
              {
                  CommandStatusIB::Parser status;
                  ReturnErrorOnFailure(status.Init(reader));
  
                  PRETTY_PRINT_INCDEPTH();
                  ReturnErrorOnFailure(status.CheckSchemaValidity());
                  PRETTY_PRINT_DECDEPTH();
              }
              break;
          default:
              PRETTY_PRINT("Unknown tag num %" PRIu32, tagNum);
              break;
          }
      }
  
      PRETTY_PRINT("},");
      PRETTY_PRINT("");
  
      // if we have exhausted this container
      if (CHIP_END_OF_TLV == err)
      {
          // check for at most field:
          const int CheckCommandField = 1 << to_underlying(Tag::kCommand);
          const int CheckStatusField  = (1 << to_underlying(Tag::kStatus));
  
          if ((TagPresenceMask & CheckCommandField) == CheckCommandField && (TagPresenceMask & CheckStatusField) == CheckStatusField)
          {
              // kPath and kErrorStatus both exist
              err = CHIP_ERROR_IM_MALFORMED_INVOKE_RESPONSE_IB;
          }
          else if ((TagPresenceMask & CheckCommandField) != CheckCommandField &&
                   (TagPresenceMask & CheckStatusField) != CheckStatusField)
          {
              // kPath and kErrorStatus not exist
              err = CHIP_ERROR_IM_MALFORMED_INVOKE_RESPONSE_IB;
          }
          else
          {
              err = CHIP_NO_ERROR;
          }
      }
      ReturnErrorOnFailure(err);
      ReturnErrorOnFailure(reader.ExitContainer(mOuterContainerType));
      return CHIP_NO_ERROR;
  }
  #endif // CHIP_CONFIG_IM_ENABLE_SCHEMA_CHECK
  
  CHIP_ERROR InvokeResponseIB::Parser::GetCommand(CommandDataIB::Parser * const apCommand) const
  {
      TLV::TLVReader reader;
      ReturnErrorOnFailure(mReader.FindElementWithTag(TLV::ContextTag(to_underlying(Tag::kCommand)), reader));
      ReturnErrorOnFailure(apCommand->Init(reader));
      return CHIP_NO_ERROR;
  }
  
  CHIP_ERROR InvokeResponseIB::Parser::GetStatus(CommandStatusIB::Parser * const apStatus) const
  {
      TLV::TLVReader reader;
      ReturnErrorOnFailure(mReader.FindElementWithTag(TLV::ContextTag(to_underlying(Tag::kStatus)), reader));
      ReturnErrorOnFailure(apStatus->Init(reader));
      return CHIP_NO_ERROR;
  }
  
  CommandDataIB::Builder & InvokeResponseIB::Builder::CreateCommand()
  {
      if (mError == CHIP_NO_ERROR)
      {
          mError = mCommand.Init(mpWriter, to_underlying(Tag::kCommand));
      }
      return mCommand;
  }
  
  CommandStatusIB::Builder & InvokeResponseIB::Builder::CreateStatus()
  {
      if (mError == CHIP_NO_ERROR)
      {
          mError = mStatus.Init(mpWriter, to_underlying(Tag::kStatus));
      }
      return mStatus;
  }
  
  InvokeResponseIB::Builder & InvokeResponseIB::Builder::EndOfInvokeResponseIB()
  {
      EndOfContainer();
      return *this;
  }
  } // namespace app
  } // namespace chip
  