79 lines
4.5 KiB
Ada
79 lines
4.5 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- S Y S T E M . I M G _ E N U M --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2000-2013, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- Enumeration_Type'Image for all enumeration types except those in package
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-- Standard (where we have no opportunity to build image tables), and in
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-- package System (where it is too early to start building image tables).
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-- Special routines exist for the enumeration types in these packages.
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-- Note: this is an obsolete package, replaced by System.Img_Enum_New, which
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-- provides procedures instead of functions for these enumeration image calls.
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-- The reason we maintain this package is that when bootstrapping with old
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-- compilers, the old compiler will search for this unit, expecting to find
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-- these functions. The new compiler will search for procedures in the new
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-- version of the unit.
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pragma Compiler_Unit_Warning;
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package System.Img_Enum is
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pragma Pure;
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function Image_Enumeration_8
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(Pos : Natural;
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Names : String;
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Indexes : System.Address) return String;
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-- Used to compute Enum'Image (Str) where Enum is some enumeration type
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-- other than those defined in package Standard. Names is a string with a
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-- lower bound of 1 containing the characters of all the enumeration
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-- literals concatenated together in sequence. Indexes is the address of an
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-- array of type array (0 .. N) of Natural_8, where N is the number of
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-- enumeration literals in the type. The Indexes values are the starting
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-- subscript of each enumeration literal, indexed by Pos values, with an
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-- extra entry at the end containing Names'Length + 1. The reason that
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-- Indexes is passed by address is that the actual type is created on the
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-- fly by the expander. The value returned is the desired 'Image value.
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function Image_Enumeration_16
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(Pos : Natural;
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Names : String;
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Indexes : System.Address) return String;
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-- Identical to Image_Enumeration_8 except that it handles types
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-- using array (0 .. Num) of Natural_16 for the Indexes table.
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function Image_Enumeration_32
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(Pos : Natural;
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Names : String;
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Indexes : System.Address) return String;
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-- Identical to Image_Enumeration_8 except that it handles types
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-- using array (0 .. Num) of Natural_32 for the Indexes table.
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end System.Img_Enum;
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