-- --
-- S p e c --
-- --
--- Copyright (C) 1992-1997 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2008, 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, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, 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. --
-- Pragma handling is isolated in a separate package
-- (logically this processing belongs in chapter 4)
+with Namet; use Namet;
with Types; use Types;
+
package Sem_Prag is
+ -----------------
+ -- Subprograms --
+ -----------------
+
+ procedure Analyze_PPC_In_Decl_Part (N : Node_Id; S : Entity_Id);
+ -- Special analyze routine for precondition/postcondition pragma that
+ -- appears within a declarative part where the pragma is associated
+ -- with a subprogram specification. N is the pragma node, and S is the
+ -- entity for the related subprogram. This procedure does a preanalysis
+ -- of the expressions in the pragma as "spec expressions" (see section
+ -- in Sem "Handling of Default and Per-Object Expressions...").
+
procedure Analyze_Pragma (N : Node_Id);
-- Analyze procedure for pragma reference node N
+ function Check_Enabled (Nam : Name_Id) return Boolean;
+ -- This function is used in connection with pragmas Assertion, Check,
+ -- Precondition, and Postcondition to determine if Check pragmas (or
+ -- corresponding Assert, Precondition, or Postcondition pragmas) are
+ -- currently active, as determined by the presence of -gnata on the
+ -- command line (which sets the default), and the appearance of pragmas
+ -- Check_Policy and Assertion_Policy as configuration pragmas either in
+ -- a configuration pragma file, or at the start of the current unit.
+ -- True is returned if the specified check is enabled.
+
+ function Delay_Config_Pragma_Analyze (N : Node_Id) return Boolean;
+ -- N is a pragma appearing in a configuration pragma file. Most such
+ -- pragmas are analyzed when the file is read, before parsing and analyzing
+ -- the main unit. However, the analysis of certain pragmas results in
+ -- adding information to the compiled main unit, and this cannot be done
+ -- till the main unit is processed. Such pragmas return True from this
+ -- function and in Frontend pragmas where Delay_Config_Pragma_Analyze is
+ -- True have their analysis delayed until after the main program is parsed
+ -- and analyzed.
+
+ procedure Initialize;
+ -- Initializes data structures used for pragma processing. Must be called
+ -- before analyzing each new main source program.
+
+ function Is_Non_Significant_Pragma_Reference (N : Node_Id) return Boolean;
+ -- The node N is a node for an entity and the issue is whether the
+ -- occurrence is a reference for the purposes of giving warnings about
+ -- unreferenced variables. This function returns True if the reference is
+ -- not a reference from this point of view (e.g. the occurrence in a pragma
+ -- Pack) and False if it is a real reference (e.g. the occurrence in a
+ -- pragma Export);
+
function Is_Pragma_String_Literal (Par : Node_Id) return Boolean;
- -- Given an N_Pragma_Argument_Association node, Par, which has the form
- -- of an operator symbol, determines whether or not it should be treated
- -- as an string literal. This is called by Sem_Ch6.Analyze_Operator_Symbol.
- -- If True is returned, the argument is converted to a string literal. If
+ -- Given an N_Pragma_Argument_Association node, Par, which has the form of
+ -- an operator symbol, determines whether or not it should be treated as an
+ -- string literal. This is called by Sem_Ch6.Analyze_Operator_Symbol. If
+ -- True is returned, the argument is converted to a string literal. If
-- False is returned, then the argument is treated as an entity reference
-- to the operator.
+ function Is_Config_Static_String (Arg : Node_Id) return Boolean;
+ -- This is called for a configuration pragma that requires either string
+ -- literal or a concatenation of string literals. We cannot use normal
+ -- static string processing because it is too early in the case of the
+ -- pragma appearing in a configuration pragmas file. If Arg is of an
+ -- appropriate form, then this call obtains the string (doing any necessary
+ -- concatenations) and places it in Name_Buffer, setting Name_Len to its
+ -- length, and then returns True. If it is not of the correct form, then an
+ -- appropriate error message is posted, and False is returned.
+
procedure Process_Compilation_Unit_Pragmas (N : Node_Id);
- -- Called at the start of processing compilation unit N to deal with
- -- any special issues regarding pragmas. In particular, we have to
- -- deal with Suppress_All at this stage, since it appears after the
- -- unit instead of before.
+ -- Called at the start of processing compilation unit N to deal with any
+ -- special issues regarding pragmas. In particular, we have to deal with
+ -- Suppress_All at this stage, since it appears after the unit instead of
+ -- before.
procedure Set_Encoded_Interface_Name (E : Entity_Id; S : Node_Id);
- -- This routine is used to set an encoded interface name. The node
- -- S is an N_String_Literal node for the external name to be set, and
- -- E is an entity whose Interface_Name field is to be set. In the
- -- normal case where S contains a name that is a valid C identifier,
- -- then S is simply set as the value of the Interface_Name. Otherwise
- -- it is encoded. See the body for details of the encoding. This
- -- encoding is only done on VMS systems, since it seems pretty silly,
- -- but is needed to pass some dubious tests in the test suite.
+ -- This routine is used to set an encoded interface name. The node S is an
+ -- N_String_Literal node for the external name to be set, and E is an
+ -- entity whose Interface_Name field is to be set. In the normal case where
+ -- S contains a name that is a valid C identifier, then S is simply set as
+ -- the value of the Interface_Name. Otherwise it is encoded. See the body
+ -- for details of the encoding. This encoding is only done on VMS systems,
+ -- since it seems pretty silly, but is needed to pass some dubious tests in
+ -- the test suite.
end Sem_Prag;
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