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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- E X P _ C H 2 --
+-- --
+-- S p e c --
+-- --
+-- 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 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 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. --
+-- --
+------------------------------------------------------------------------------
+
+-- Expand routines for chapter 2 constructs
+
+with Types; use Types;
+package Exp_Ch2 is
+
+ procedure Expand_N_Expanded_Name (N : Node_Id);
+ procedure Expand_N_Identifier (N : Node_Id);
+ procedure Expand_N_Real_Literal (N : Node_Id);
+
+ function Param_Entity (N : Node_Id) return Entity_Id;
+ -- Given an expression N, determines if the expression is a reference
+ -- to a formal (of a subprogram or entry), and if so returns the Id
+ -- of the corresponding formal entity, otherwise returns Empty. The
+ -- reason that this is in Exp_Ch2 is that it has to deal with the case
+ -- where the reference is to an entry formal, and has been expanded
+ -- already. Since Exp_Ch2 is in charge of the expansion, it is best
+ -- suited to knowing how to detect this case. Also handles the case
+ -- of references to renamings of formals.
+
+end Exp_Ch2;