gcc/ada/osint-b.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              O S I N T - B                               --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2001 Free Software Foundation, Inc.               --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 --  This package contains the low level, operating system routines used only
  28 --  in the GNAT binder for command line processing and file input output.
  29
  30 package Osint.B is
  31
  32    procedure Record_Time_From_Last_Bind;
  33    --  Trigger the computing of the time from the last bind of the same
  34    --  program.
  35
  36    function More_Lib_Files return Boolean;
  37    --  Indicates whether more library information files remain to be processed.
  38    --  Returns False right away if no source files, or if all source files
  39    --  have been processed.
  40
  41    function Next_Main_Lib_File return File_Name_Type;
  42    --  This function returns the name of the next library info file specified
  43    --  on the command line. It is an error to call Next_Main_Lib_File if no
  44    --  more library information files exist (i.e. Next_Main_Lib_File may be
  45    --  called only if a previous call to More_Lib_Files returned True). This
  46    --  name is the simple name, excluding any directory information.
  47
  48    function Time_From_Last_Bind return Nat;
  49    --  This function give an approximate number of minute from the last bind.
  50    --  It bases its computation on file stamp and therefore does gibe not
  51    --  any meaningful result before the new output binder file is written.
  52    --  So it returns Nat'last if:
  53    --
  54    --   - it is the first bind of this  specific program
  55    --   - Record_Time_From_Last_Bind was not Called first
  56    --   - Close_Binder_Output was not called first
  57    --
  58    --  otherwise it returns the number of minutes from the last bind. The
  59    --  computation does not try to be completely accurate and in particular
  60    --  does not take leap years into account.
  61
  62    -------------------
  63    -- Binder Output --
  64    -------------------
  65
  66    --  These routines are used by the binder to generate the C source file
  67    --  containing the binder output. The format of this file is described
  68    --  in the package Bindfmt.
  69
  70    procedure Create_Binder_Output
  71      (Output_File_Name : String;
  72       Typ              : Character;
  73       Bfile            : out Name_Id);
  74    --  Creates the binder output file. Typ is one of
  75    --
  76    --    'c'   create output file for case of generating C
  77    --    'b'   create body file for case of generating Ada
  78    --    's'   create spec file for case of generating Ada
  79    --
  80    --  If Output_File_Name is null, then a default name is used based on
  81    --  the name of the most recently accessed main source file name. If
  82    --  Output_File_Name is non-null then it is the full path name of the
  83    --  file to be output (in the case of Ada, it must have an extension
  84    --  of adb, and the spec file is created by changing the last character
  85    --  from b to s. On return, Bfile also contains the Name_Id for the
  86    --  generated file name.
  87
  88    procedure Write_Binder_Info (Info : String);
  89    --  Writes the contents of the referenced string to the binder output file
  90    --  created by a previous call to Create_Binder_Output. Info represents a
  91    --  single line in the file, but does not contain any line termination
  92    --  characters. The implementation of Write_Binder_Info is responsible
  93    --  for adding necessary end of line and end of file control characters
  94    --  as required by the operating system.
  95
  96    procedure Close_Binder_Output;
  97    --  Closes the file created by Create_Binder_Output, flushing any
  98    --  buffers etc from writes by Write_Binder_Info.
  99
 100 end Osint.B;