cxa9002.a

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· A 代码 · 共 483 行 · 第 1/2 页

         Sav_File    : Sav_DIO.File_Type;

      begin 

         Acct_DIO.Create (Acct_File, Acct_DIO.Out_File, Acct_Filename);
         Cash_DIO.Create (Cash_File, Cash_DIO.Out_File, Cash_Filename);
         Inv_DIO.Create  (Inv_File,  Inv_DIO.Out_File,  Inv_Filename);
         Chk_DIO.Create  (Chk_File,  Chk_DIO.Out_File,  Chk_Filename);
         Sav_DIO.Create  (Sav_File,  Sav_DIO.Out_File,  Sav_Filename);

         -- Store the tag values of the objects declared above for 
         -- comparison with tag values of objects following processing.

         TC_Account_Type_Tag := 
           new String'(Ada.Tags.External_Tag(Account_Type'Tag));

         TC_Cash_Account_Type_Tag := 
           new String'(Ada.Tags.External_Tag(Cash_Account_Type'Tag));

         TC_Investment_Account_Type_Tag := 
           new String'(Ada.Tags.External_Tag(Investment_Account_Type'Tag));

         TC_Checking_Account_Type_Tag := 
           new String'(Ada.Tags.External_Tag(Checking_Account_Type'Tag));

         TC_Savings_Account_Type_Tag := 
           new String'(Ada.Tags.External_Tag(Savings_Account_Type'Tag));

         -- Prepare tagged data for writing to the Direct_IO files using
         -- Storage_IO procedure to place data in buffers.

         Acct_SIO.Write (Buffer => Acct_Buffer, Item => Account);
         Cash_SIO.Write (Cash_Buffer, Cash_Account);
         Inv_SIO.Write  (Inv_Buffer, Item => Investment_Account);  
         Chk_SIO.Write  (Buffer => Chk_Buffer, Item => Checking_Account);
         Sav_SIO.Write  (Sav_Buffer, Savings_Account);

         -- At this point, the data and associated tag values have been
         -- buffered by the Storage_IO procedure, and the buffered data 
         -- can be written to the appropriate Direct_IO file.

         Acct_DIO.Write (File => Acct_File, Item => Acct_Buffer);
         Cash_DIO.Write (Cash_File, Cash_Buffer);
         Inv_DIO.Write  (Inv_File, Item => Inv_Buffer);
         Chk_DIO.Write  (File => Chk_File, Item =>Chk_Buffer);
         Sav_DIO.Write  (Sav_File, Sav_Buffer);

         -- Close all Direct_IO files.

         Acct_DIO.Close (Acct_File);
         Cash_DIO.Close (Cash_File);
         Inv_DIO.Close  (Inv_File); 
         Chk_DIO.Close  (Chk_File); 
         Sav_DIO.Close  (Sav_File); 

      exception
         when others => Report.Failed("Exception raised in Buffer_Data");
      end Buffer_Data;

      procedure Read_Data is

         Account            : Account_Type;
         Cash_Account       : Cash_Account_Type;
         Investment_Account : Investment_Account_Type;
         Checking_Account   : Checking_Account_Type;
         Savings_Account    : Savings_Account_Type;

         -- Storage_IO is instantiated for each of the specific tagged
         -- type. 

         package Acct_SIO is new Ada.Storage_IO (Account_Type);
         package Cash_SIO is new Ada.Storage_IO (Cash_Account_Type);
         package Inv_SIO  is new Ada.Storage_IO (Investment_Account_Type);
         package Chk_SIO  is new Ada.Storage_IO (Checking_Account_Type);
         package Sav_SIO  is new Ada.Storage_IO (Savings_Account_Type);

         -- Direct_IO is instantiated for the buffer types defined in the
         -- instantiated Storage_IO packages.

         package Acct_DIO is new Ada.Direct_IO (Acct_SIO.Buffer_Type);
         package Cash_DIO is new Ada.Direct_IO (Cash_SIO.Buffer_Type);
         package Inv_DIO  is new Ada.Direct_IO (Inv_SIO.Buffer_Type);
         package Chk_DIO  is new Ada.Direct_IO (Chk_SIO.Buffer_Type);
         package Sav_DIO  is new Ada.Direct_IO (Sav_SIO.Buffer_Type);

         Acct_Buffer : Acct_SIO.Buffer_Type;
         Cash_Buffer : Cash_SIO.Buffer_Type;
         Inv_Buffer  : Inv_SIO.Buffer_Type;
         Chk_Buffer  : Chk_SIO.Buffer_Type;
         Sav_Buffer  : Sav_SIO.Buffer_Type;

         Acct_File   : Acct_DIO.File_Type;
         Cash_File   : Cash_DIO.File_Type;
         Inv_File    : Inv_DIO.File_Type;
         Chk_File    : Chk_DIO.File_Type;
         Sav_File    : Sav_DIO.File_Type;

      begin

         -- Open the Direct_IO files.

         Acct_DIO.Open (Acct_File, Acct_DIO.In_File, Acct_Filename);
         Cash_DIO.Open (Cash_File, Cash_DIO.In_File, Cash_Filename);
         Inv_DIO.Open  (Inv_File,  Inv_DIO.In_File,  Inv_Filename);
         Chk_DIO.Open  (Chk_File,  Chk_DIO.In_File,  Chk_Filename);
         Sav_DIO.Open  (Sav_File,  Sav_DIO.In_File,  Sav_Filename);

         -- Read the buffer data from the files using Direct_IO.

         Acct_DIO.Read (File => Acct_File, Item => Acct_Buffer);
         Cash_DIO.Read (Cash_File, Cash_Buffer);
         Inv_DIO.Read  (Inv_File, Item => Inv_Buffer);
         Chk_DIO.Read  (File => Chk_File, Item =>Chk_Buffer);
         Sav_DIO.Read  (Sav_File, Sav_Buffer);

         -- At this point, the data and associated tag values are stored
         -- in buffers. Use the Storage_IO procedure Read to recreate the
         -- tagged objects from the buffers.

         Acct_SIO.Read (Buffer => Acct_Buffer, Item => Account);
         Cash_SIO.Read (Cash_Buffer, Cash_Account);
         Inv_SIO.Read  (Inv_Buffer, Item => Investment_Account);  
         Chk_SIO.Read  (Buffer => Chk_Buffer, Item => Checking_Account);
         Sav_SIO.Read  (Sav_Buffer, Savings_Account);

         -- Delete all Direct_IO files.

         Acct_DIO.Delete (Acct_File);
         Cash_DIO.Delete (Cash_File);
         Inv_DIO.Delete  (Inv_File); 
         Chk_DIO.Delete  (Chk_File); 
         Sav_DIO.Delete  (Sav_File); 

         Data_Verification_Block:
         begin

            if Account /= TC_Account then
               Report.Failed("Incorrect Account object reconstructed");
            end if;

            if Cash_Account /= TC_Cash_Account then
               Report.Failed
                 ("Incorrect Cash_Account object reconstructed");
            end if;   

            if Investment_Account /= TC_Investment_Account then
               Report.Failed
                 ("Incorrect Investment_Account object reconstructed");
            end if;   

            if Checking_Account /= TC_Checking_Account then
               Report.Failed
                 ("Incorrect Checking_Account object reconstructed");
            end if;   

            if Savings_Account /= TC_Savings_Account then
               Report.Failed
                 ("Incorrect Savings_Account object reconstructed");
            end if;   
               
         exception
            when others =>
              Report.Failed
                ("Exception raised during Data_Verification Block");
         end Data_Verification_Block;


         -- To ensure that the tags of the values reconstructed by 
         -- Storage_IO were properly preserved, object tag values following 
         -- object reconstruction are compared with tag values of objects
         -- stored prior to processing.

         Tag_Verification_Block:
         begin

            if TC_Account_Type_Tag.all /= 
               Ada.Tags.External_Tag(Account_Type'Class(Account)'Tag)
            then
               Report.Failed("Incorrect Account tag");
            end if;

            if TC_Cash_Account_Type_Tag.all       /= 
               Ada.Tags.External_Tag(
                 Cash_Account_Type'Class(Cash_Account)'Tag)
            then
               Report.Failed("Incorrect Cash_Account tag");
            end if;

            if TC_Investment_Account_Type_Tag.all /=                 
               Ada.Tags.External_Tag(
                 Investment_Account_Type'Class(Investment_Account)'Tag)
            then
               Report.Failed("Incorrect Investment_Account tag");
            end if;

            if TC_Checking_Account_Type_Tag.all   /=
               Ada.Tags.External_Tag(
                 Checking_Account_Type'Class(Checking_Account)'Tag)
            then
               Report.Failed("Incorrect Checking_Account tag");
            end if;

            if TC_Savings_Account_Type_Tag.all    /=
               Ada.Tags.External_Tag(
                 Savings_Account_Type'Class(Savings_Account)'Tag)
            then
               Report.Failed("Incorrect Savings_Account tag");
            end if;

         exception
            when others => 
              Report.Failed ("Exception raised during tag evaluation");
         end Tag_Verification_Block;

      exception
         when others => Report.Failed ("Exception in Read_Data");
      end Read_Data;

      begin  -- Test_Block

      -- Enter the data into the appropriate files.
      Buffer_Data;

      -- Reconstruct the data from files, and verify the results.
      Read_Data;

   exception
      when others => Report.Failed ("Exception raised in Test_Block");
   end Test_Block;

   Report.Result;

exception
   when Incomplete =>
      Report.Result;
   when others     =>
      Report.Failed ( "Unexpected exception" );
      Report.Result;

end CXA9002;