-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2007, 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- --
+-- ware Foundation; either version 3, 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. --
+-- Public License distributed with GNAT; see file COPYING3. If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- This package deals with the implementation of the Restrictions pragma
+with Namet; use Namet;
with Rident; use Rident;
with Table;
with Types; use Types;
package Restrict is
- Restrictions : Restrictions_Info;
+ Restrictions : Restrictions_Info := No_Restrictions;
-- This variable records restrictions found in any units in the main
-- extended unit, and in the case of restrictions checked for partition
-- consistency, restrictions found in any with'ed units, parent specs
-- pragma, and a value of System_Location is used for restrictions
-- set from package Standard by the processing in Targparm.
- Main_Restrictions : Restrictions_Info;
+ Main_Restrictions : Restrictions_Info := No_Restrictions;
-- This variable records only restrictions found in any units of the
-- main extended unit. These are the variables used for ali file output,
-- since we want the binder to be able to accurately diagnose inter-unit
-- For abort to be allowed, either No_Abort_Statements must be False,
-- or Max_Asynchronous_Select_Nesting must be non-zero.
+ procedure Check_Compiler_Unit (N : Node_Id);
+ -- If unit N is in a unit that has a pragma Compiler_Unit, then a message
+ -- is posted on node N noting use of a construct that is not permitted in
+ -- the compiler.
+
procedure Check_Restricted_Unit (U : Unit_Name_Type; N : Node_Id);
-- Checks if loading of unit U is prohibited by the setting of some
-- restriction (e.g. No_IO restricts the loading of unit Ada.Text_IO).
-- an elaboration routine. If elaboration code is not allowed, an error
-- message is posted on the node given as argument.
+ procedure Check_Implicit_Dynamic_Code_Allowed (N : Node_Id);
+ -- Tests to see if dynamic code generation (dynamically generated
+ -- trampolines, in particular) is allowed by the current restrictions
+ -- settings. This function is called by Gigi when it needs to generate code
+ -- that generates a trampoline. If not allowed, an error message is posted
+ -- on the node given as argument.
+
procedure Check_No_Implicit_Heap_Alloc (N : Node_Id);
-- Equivalent to Check_Restriction (No_Implicit_Heap_Allocations, N).
-- Provided for easy use by back end, which has to check this restriction.
function No_Exception_Handlers_Set return Boolean;
-- Test to see if current restrictions settings specify that no exception
-- handlers are present. This function is called by Gigi when it needs to
- -- expand an AT END clean up identifier with no exception handler.
+ -- expand an AT END clean up identifier with no exception handler. True
+ -- will be returned if the configurable run-time is activated, and either
+ -- of the restrictions No_Exception_Handlers or No_Exception_Propagation is
+ -- set. In the latter case, the source may contain handlers but they either
+ -- get converted using the local goto transformation or deleted.
function Process_Restriction_Synonyms (N : Node_Id) return Name_Id;
-- Id is a node whose Chars field contains the name of a restriction.
pragma Inline (Restriction_Active);
-- Determines if a given restriction is active. This call should only be
-- used where the compiled code depends on whether the restriction is
- -- active. Always use Check_Restriction to record a violation.
+ -- active. Always use Check_Restriction to record a violation. Note that
+ -- this returns False if we only have a Restriction_Warnings set, since
+ -- restriction warnings should never affect generated code.
function Restricted_Profile return Boolean;
-- Tests if set of restrictions corresponding to Profile (Restricted) is
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