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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- S Y S T E M . I M G _ E N U M --
-- --
-- S p e c --
-- --
-- Copyright (C) 2000-2009, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- Enumeration_Type'Image for all enumeration types except those in package
-- Standard (where we have no opportunity to build image tables), and in
-- package System (where it is too early to start building image tables).
-- Special routines exist for the enumeration types in these packages.
-- Note: this is an obsolete package, replaced by System.Img_Enum_New, which
-- provides procedures instead of functions for these enumeration image calls.
-- The reason we maintain this package is that when bootstrapping with old
-- compilers, the old compiler will search for this unit, expecting to find
-- these functions. The new compiler will search for procedures in the new
-- version of the unit.
pragma Compiler_Unit;
package System.Img_Enum is
pragma Pure;
function Image_Enumeration_8
(Pos : Natural;
Names : String;
Indexes : System.Address) return String;
-- Used to compute Enum'Image (Str) where Enum is some enumeration type
-- other than those defined in package Standard. Names is a string with a
-- lower bound of 1 containing the characters of all the enumeration
-- literals concatenated together in sequence. Indexes is the address of an
-- array of type array (0 .. N) of Natural_8, where N is the number of
-- enumeration literals in the type. The Indexes values are the starting
-- subscript of each enumeration literal, indexed by Pos values, with an
-- extra entry at the end containing Names'Length + 1. The reason that
-- Indexes is passed by address is that the actual type is created on the
-- fly by the expander. The value returned is the desired 'Image value.
function Image_Enumeration_16
(Pos : Natural;
Names : String;
Indexes : System.Address) return String;
-- Identical to Image_Enumeration_8 except that it handles types
-- using array (0 .. Num) of Natural_16 for the Indexes table.
function Image_Enumeration_32
(Pos : Natural;
Names : String;
Indexes : System.Address) return String;
-- Identical to Image_Enumeration_8 except that it handles types
-- using array (0 .. Num) of Natural_32 for the Indexes table.
end System.Img_Enum;
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