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Diffstat (limited to 'gcc/ada/a-comlin.ads')
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1 files changed, 103 insertions, 0 deletions
diff --git a/gcc/ada/a-comlin.ads b/gcc/ada/a-comlin.ads new file mode 100644 index 00000000000..b7848e7aa5f --- /dev/null +++ b/gcc/ada/a-comlin.ads @@ -0,0 +1,103 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . C O M M A N D _ L I N E -- +-- -- +-- S p e c -- +-- -- +-- $Revision: 1.12 $ +-- -- +-- Copyright (C) 1992-2001 Free Software Foundation, Inc. -- +-- -- +-- This specification is derived from the Ada Reference Manual for use with -- +-- GNAT. The copyright notice above, and the license provisions that follow -- +-- apply solely to the contents of the part following the private keyword. -- +-- -- +-- 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, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, 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. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +package Ada.Command_Line is +pragma Preelaborate (Command_Line); + + function Argument_Count return Natural; + -- If the external execution environment supports passing arguments to a + -- program, then Argument_Count returns the number of arguments passed to + -- the program invoking the function. Otherwise it return 0. + -- + -- In GNAT: Corresponds to (argc - 1) in C. + + function Argument (Number : Positive) return String; + -- If the external execution environment supports passing arguments to + -- a program, then Argument returns an implementation-defined value + -- corresponding to the argument at relative position Number. If Number + -- is outside the range 1 .. Argument_Count, then Constraint_Error is + -- propagated. + -- + -- in GNAT: Corresponds to argv [n] (for n > 0) in C. + + function Command_Name return String; + -- If the external execution environment supports passing arguments to + -- a program, then Command_Name returns an implementation-defined value + -- corresponding to the name of the command invoking the program. + -- Otherwise Command_Name returns the null string. + -- + -- in GNAT: Corresponds to argv [0] in C. + + type Exit_Status is new Integer; + + Success : constant Exit_Status; + Failure : constant Exit_Status; + + procedure Set_Exit_Status (Code : Exit_Status); + +private + + Success : constant Exit_Status := 0; + Failure : constant Exit_Status := 1; + + -- The following locations support the operation of the package + -- Ada.Command_Line_Remove, whih provides facilities for logically + -- removing arguments from the command line. If one of the remove + -- procedures is called in this unit, then Remove_Args/Remove_Count + -- are set to indicate which arguments are removed. If no such calls + -- have been made, then Remove_Args is null. + + Remove_Count : Natural; + -- Number of arguments reflecting removals. Not defined unless + -- Remove_Args is non-null. + + type Arg_Nums is array (Positive range <>) of Positive; + type Arg_Nums_Ptr is access Arg_Nums; + -- An array that maps logical argument numbers (reflecting removal) + -- to physical argument numbers (e.g. if the first argument has been + -- removed, but not the second, then Arg_Nums (1) will be set to 2. + + Remove_Args : Arg_Nums_Ptr := null; + -- Left set to null if no remove calls have been made, otherwise set + -- to point to an appropriate mapping array. Only the first Remove_Count + -- elements are relevant. + + pragma Import (C, Set_Exit_Status, "__gnat_set_exit_status"); + +end Ada.Command_Line; |