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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- E X P _ A L F A --
-- --
-- S p e c --
-- --
-- Copyright (C) 2011, 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. --
-- --
------------------------------------------------------------------------------
-- This package implements a light expansion which is used in formal
-- verification mode. Instead of a complete expansion of nodes for code
-- generation, this Alfa expansion targets generation of intermediate code
-- for formal verification.
-- Expand_Alfa is called directly by Expander.Expand.
-- Alfa expansion has three main objectives:
-- 1. Perform limited expansion to explicit some Ada rules and constructs
-- (translate 'Old and 'Result, replace renamings by renamed, insert
-- conversions, expand actuals in calls to introduce temporaries)
-- 2. Facilitate treatment for the formal verification back-end (fully
-- qualify names, set membership)
-- 3. Avoid the introduction of low-level code that is difficult to analyze
-- formally, as typically done in the full expansion for high-level
-- constructs (tasking, dispatching)
with Types; use Types;
package Exp_Alfa is
procedure Expand_Alfa (N : Node_Id);
end Exp_Alfa;
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