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[Ada] New algorithm for Elaboration order v4.0
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1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- B I N D O --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 2019, 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
26 -- The following unit contains the main entry point into the elaboration order
27 -- mechanism. See the body for details.
28
29 with ALI; use ALI;
30 with Namet; use Namet;
31
32 package Bindo is
33
34 procedure Find_Elaboration_Order
35 (Order : out Unit_Id_Table;
36 Main_Lib_File : File_Name_Type);
37 -- Find an order of all units in the bind that need to be elaborated
38 -- such that elaboration code flow, pragmas Elaborate, Elaborate_All,
39 -- and Elaborate_Body, and with clause dependencies are all honoured.
40 -- Main_Lib_File is the argument of the bind. If a satisfactory order
41 -- exists, it is returned in Order, otherwise Unrecoverable_Error is
42 -- raised.
43
44 private
45
46 -- The following type represents the various kinds of precedence between
47 -- two items.
48
49 type Precedence_Kind is
50 (Lower_Precedence,
51 Equal_Precedence,
52 Higher_Precedence);
53
54 end Bindo;