diff options
Diffstat (limited to 'gcc-4.2.1/gcc/ada/s-ficobl.ads')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/s-ficobl.ads | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/gcc-4.2.1/gcc/ada/s-ficobl.ads b/gcc-4.2.1/gcc/ada/s-ficobl.ads deleted file mode 100644 index f19ea793b..000000000 --- a/gcc-4.2.1/gcc/ada/s-ficobl.ads +++ /dev/null @@ -1,158 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME COMPONENTS -- --- -- --- S Y S T E M . F I L E _ C O N T R O L _ B L O C K -- --- -- --- S p e c -- --- -- --- Copyright (C) 1992-2004 Free Software Foundation, Inc. -- --- -- --- GNAT is free software; you can redistribute it and/or modify it under -- --- terms of the GNU General Public License as published by the Free Soft- -- --- ware Foundation; either version 2, or (at your option) any later ver- -- --- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- --- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- --- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- --- for more details. You should have received a copy of the GNU General -- --- Public License distributed with GNAT; see file COPYING. If not, write -- --- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, USA. -- --- -- --- As a special exception, if other files instantiate generics from this -- --- unit, or you link this unit with other files to produce an executable, -- --- this unit does not by itself cause the resulting executable to be -- --- covered by the GNU General Public License. This exception does not -- --- however invalidate any other reasons why the executable file might be -- --- covered by the GNU Public License. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- This package contains the declaration of the basic file control block --- shared between Text_IO, Sequential_IO, Direct_IO and Streams.Stream_IO. --- The actual control blocks are derived from this block by extension. The --- control block is itself derived from Ada.Streams.Root_Stream_Type which --- facilitates implementation of Stream_IO.Stream and Text_Streams.Stream. - -with Ada.Streams; -with Interfaces.C_Streams; - -package System.File_Control_Block is - - ---------------------------- - -- Ada File Control Block -- - ---------------------------- - - -- The Ada file control block is an abstract extension of the root - -- stream type. This allows a file to be treated directly as a stream - -- for the purposes of Stream_IO, or stream operations on a text file. - -- The individual I/O packages extend this type with package specific - -- fields to create the concrete types to which the routines in this - -- package can be applied. - - -- The type File_Type in the individual packages is an access to the - -- extended file control block. The value is null if the file is not - -- open, and a pointer to the control block if the file is open. - - type Pstring is access all String; - -- Used to hold name and form strings - - type File_Mode is (In_File, Inout_File, Out_File, Append_File); - -- File mode (union of file modes permitted by individual packages, - -- the types File_Mode in the individual packages are declared to - -- allow easy conversion to and from this general type. - - type Shared_Status_Type is (Yes, No, None); - -- This type is used to define the sharing status of a file. The default - -- setting of None is used if no "shared=xxx" appears in the form string - -- when a file is created or opened. For a file with Shared_Status set to - -- None, Use_Error will be raised if any other file is opened or created - -- with the same full name. Yes/No are set in response to the presence - -- of "shared=yes" or "shared=no" in the form string. In either case it - -- is permissible to have multiple files opened with the same full name. - -- All files opened simultaneously with "shared=yes" will share the same - -- stream with the semantics specified in the RM for file sharing. All - -- files opened with "shared=no" will have their own stream. - - type AFCB; - type AFCB_Ptr is access all AFCB'Class; - - type AFCB is abstract new Ada.Streams.Root_Stream_Type with record - - Stream : Interfaces.C_Streams.FILEs; - -- The file descriptor - - Name : Pstring; - -- A pointer to the file name. The file name is null for temporary - -- files, and also for standard files (stdin, stdout, stderr). The - -- name is always null-terminated if it is non-null. - - Form : Pstring; - -- A pointer to the form string. This is the string used in the - -- fopen call, and must be supplied by the caller (there are no - -- defaults at this level). The string is always null-terminated. - - Mode : File_Mode; - -- The file mode. No checks are made that the mode is consistent - -- with the form used to fopen the file. - - Is_Regular_File : Boolean; - -- A flag indicating if the file is a regular file - - Is_Temporary_File : Boolean; - -- A flag set only for temporary files (i.e. files created using the - -- Create function with a null name parameter, using tmpfile). This - -- is currently not used since temporary files are deleted by the - -- operating system, but it is set properly in case some systems - -- need this information in the future. - - Is_System_File : Boolean; - -- A flag set only for system files (stdin, stdout, stderr) - - Is_Text_File : Boolean; - -- A flag set if the file was opened in text mode - - Shared_Status : Shared_Status_Type; - -- Indicates sharing status of file, see description of type above - - Access_Method : Character; - -- Set to 'Q', 'S', 'T, 'D' for Sequential_IO, Stream_IO, Text_IO - -- Direct_IO file (used to validate file sharing request). - - Next : AFCB_Ptr; - Prev : AFCB_Ptr; - -- All open files are kept on a doubly linked chain, with these - -- pointers used to maintain the next and previous pointers. - - end record; - - ---------------------------------- - -- Primitive Operations of AFCB -- - ---------------------------------- - - -- Note that we inherit the abstract operations Read and Write from - -- the base type. These must be overridden by the individual file - -- access methods to provide Stream Read/Write access. - - function AFCB_Allocate (Control_Block : AFCB) return AFCB_Ptr is abstract; - -- Given a control block, allocate space for a control block of the same - -- type on the heap, and return the pointer to this allocated block. Note - -- that the argument Control_Block is not used other than as the argument - -- that controls which version of AFCB_Allocate is called. - - procedure AFCB_Close (File : access AFCB) is abstract; - -- Performs any specialized close actions on a file before the file is - -- actually closed at the system level. This is called by Close, and - -- the reason we need the primitive operation is for the automatic - -- close operations done as part of finalization. - - procedure AFCB_Free (File : access AFCB) is abstract; - -- Frees the AFCB referenced by the given parameter. It is not necessary - -- to free the strings referenced by the Form and Name fields, but if the - -- extension has any other heap objects, they must be freed as well. This - -- procedure must be overridden by each individual file package. - -end System.File_Control_Block; |