------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . R E S T R I C T I O N S -- -- -- -- B o d y -- -- -- -- Copyright (C) 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, 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ package body System.Restrictions is use Rident; ------------------- -- Abort_Allowed -- ------------------- function Abort_Allowed return Boolean is begin return Run_Time_Restrictions.Violated (No_Abort_Statements) or else Run_Time_Restrictions.Violated (Max_Asynchronous_Select_Nesting); end Abort_Allowed; --------------------- -- Tasking_Allowed -- --------------------- function Tasking_Allowed return Boolean is begin return Run_Time_Restrictions.Violated (Max_Tasks) or else Run_Time_Restrictions.Violated (No_Tasking); end Tasking_Allowed; -- Package elaboration code (acquire restrictions) begin Acquire_Restrictions : declare subtype Big_String is String (Positive); type Big_String_Ptr is access all Big_String; RString : Big_String_Ptr; pragma Import (C, RString, "__gl_restrictions"); P : Natural := 1; -- Pointer to scan string C : Character; -- Next character from string function Get_Char return Character; -- Get next character from string function Get_Natural return Natural; -- Scan out natural value known to be in range, updating P past it -------------- -- Get_Char -- -------------- function Get_Char return Character is begin P := P + 1; return RString (P - 1); end Get_Char; ----------------- -- Get_Natural -- ----------------- function Get_Natural return Natural is N : Natural := 0; begin while RString (P) in '0' .. '9' loop N := N * 10 + (Character'Pos (Get_Char) - Character'Pos ('0')); end loop; return N; end Get_Natural; -- Start of processing for Acquire_Restrictions begin -- Acquire data corresponding to first R line for R in All_Boolean_Restrictions loop C := Get_Char; if C = 'v' then Run_Time_Restrictions.Violated (R) := True; elsif C = 'r' then Run_Time_Restrictions.Set (R) := True; end if; end loop; -- Acquire data corresponding to second R line for RP in All_Parameter_Restrictions loop -- Acquire restrictions pragma information if Get_Char = 'r' then Run_Time_Restrictions.Set (RP) := True; Run_Time_Restrictions.Value (RP) := Get_Natural; end if; -- Acquire restrictions violations information if Get_Char = 'v' then Run_Time_Restrictions.Violated (RP) := True; Run_Time_Restrictions.Count (RP) := Get_Natural; if RString (P) = '+' then Run_Time_Restrictions.Unknown (RP) := True; P := P + 1; end if; end if; end loop; end Acquire_Restrictions; end System.Restrictions;