1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                             E X P _ A G G R                              --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2009, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
17-- for  more details.  You should have  received  a copy of the GNU General --
18-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
19-- http://www.gnu.org/licenses for a complete copy of the license.          --
20--                                                                          --
21-- GNAT was originally developed  by the GNAT team at  New York University. --
22-- Extensive contributions were provided by Ada Core Technologies Inc.      --
23--                                                                          --
24------------------------------------------------------------------------------
25
26with Types; use Types;
27
28package Exp_Aggr is
29
30   procedure Expand_N_Aggregate           (N : Node_Id);
31   procedure Expand_N_Extension_Aggregate (N : Node_Id);
32
33   function Is_Delayed_Aggregate (N : Node_Id) return Boolean;
34   --  Returns True if N is an aggregate of some kind whose Expansion_Delayed
35   --  flag is set (see sinfo for meaning of flag).
36
37   procedure Convert_Aggr_In_Object_Decl (N : Node_Id);
38   --  N is a N_Object_Declaration with an expression which must be an
39   --  N_Aggregate or N_Extension_Aggregate with Expansion_Delayed.
40   --  This procedure performs in-place aggregate assignment.
41
42   procedure Convert_Aggr_In_Allocator
43     (Alloc : Node_Id;
44      Decl  : Node_Id;
45      Aggr  : Node_Id);
46   --  Alloc is the allocator whose expression is the aggregate Aggr.
47   --  Decl is an N_Object_Declaration created during allocator expansion.
48   --  This procedure performs in-place aggregate assignment into the
49   --  temporary declared in Decl, and the allocator becomes an access to
50   --  that temporary.
51
52   procedure Convert_Aggr_In_Assignment (N : Node_Id);
53   --  If the right-hand side of an assignment is an aggregate, expand the
54   --  statement into a series of individual component assignments. This is
55   --  done if there are non-static values involved in either the bounds or
56   --  the components, and the aggregate cannot be handled as a whole by the
57   --  backend.
58
59   function Static_Array_Aggregate (N : Node_Id) return Boolean;
60   --  N is an array aggregate that may have a component association with
61   --  an others clause and a range. If bounds are static and the expressions
62   --  are compile-time known constants, rewrite N as a purely positional
63   --  aggregate, to be use to initialize variables and components of the type
64   --  without generating elaboration code.
65end Exp_Aggr;
66