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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S E M _ P R A G --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2004 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. --
-- --
-- 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 Types; use Types;
package Sem_Prag is
procedure Analyze_Pragma (N : Node_Id);
-- Analyze procedure for pragma reference node N
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.
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 occcurrence 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
-- 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 a
-- 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.
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.
end Sem_Prag;
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