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--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                             E X P _ A G G R                              --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 1992-2009, 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.      --

--                                                                          --

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with Types; use Types;

package Exp_Aggr is

   procedure Expand_N_Aggregate           (N : Node_Id);

   procedure Expand_N_Extension_Aggregate (N : Node_Id);

   function Is_Delayed_Aggregate (N : Node_Id) return Boolean;

   --  Returns True if N is an aggregate of some kind whose Expansion_Delayed

   --  flag is set (see sinfo for meaning of flag).

   procedure Convert_Aggr_In_Object_Decl (N : Node_Id);

   --  N is a N_Object_Declaration with an expression which must be an

   --  N_Aggregate or N_Extension_Aggregate with Expansion_Delayed.

   --  This procedure performs in-place aggregate assignment.

   procedure Convert_Aggr_In_Allocator

     (Alloc : Node_Id;

      Decl  : Node_Id;

      Aggr  : Node_Id);

   --  Alloc is the allocator whose expression is the aggregate Aggr.

   --  Decl is an N_Object_Declaration created during allocator expansion.

   --  This procedure performs in-place aggregate assignment into the

   --  temporary declared in Decl, and the allocator becomes an access to

   --  that temporary.

   procedure Convert_Aggr_In_Assignment (N : Node_Id);

   --  If the right-hand side of an assignment is an aggregate, expand the

   --  statement into a series of individual component assignments. This is

   --  done if there are non-static values involved in either the bounds or

   --  the components, and the aggregate cannot be handled as a whole by the

   --  backend.

   function Static_Array_Aggregate (N : Node_Id) return Boolean;

   --  N is an array aggregate that may have a component association with

   --  an others clause and a range. If bounds are static and the expressions

   --  are compile-time known constants, rewrite N as a purely positional

   --  aggregate, to be use to initialize variables and components of the type

   --  without generating elaboration code.

end Exp_Aggr;