1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- S Y S T E M . I M G _ E N U M -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2000-2013, 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. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32-- Enumeration_Type'Image for all enumeration types except those in package 33-- Standard (where we have no opportunity to build image tables), and in 34-- package System (where it is too early to start building image tables). 35-- Special routines exist for the enumeration types in these packages. 36 37-- Note: this is an obsolete package, replaced by System.Img_Enum_New, which 38-- provides procedures instead of functions for these enumeration image calls. 39-- The reason we maintain this package is that when bootstrapping with old 40-- compilers, the old compiler will search for this unit, expecting to find 41-- these functions. The new compiler will search for procedures in the new 42-- version of the unit. 43 44pragma Compiler_Unit_Warning; 45 46package System.Img_Enum is 47 pragma Pure; 48 49 function Image_Enumeration_8 50 (Pos : Natural; 51 Names : String; 52 Indexes : System.Address) return String; 53 -- Used to compute Enum'Image (Str) where Enum is some enumeration type 54 -- other than those defined in package Standard. Names is a string with a 55 -- lower bound of 1 containing the characters of all the enumeration 56 -- literals concatenated together in sequence. Indexes is the address of an 57 -- array of type array (0 .. N) of Natural_8, where N is the number of 58 -- enumeration literals in the type. The Indexes values are the starting 59 -- subscript of each enumeration literal, indexed by Pos values, with an 60 -- extra entry at the end containing Names'Length + 1. The reason that 61 -- Indexes is passed by address is that the actual type is created on the 62 -- fly by the expander. The value returned is the desired 'Image value. 63 64 function Image_Enumeration_16 65 (Pos : Natural; 66 Names : String; 67 Indexes : System.Address) return String; 68 -- Identical to Image_Enumeration_8 except that it handles types 69 -- using array (0 .. Num) of Natural_16 for the Indexes table. 70 71 function Image_Enumeration_32 72 (Pos : Natural; 73 Names : String; 74 Indexes : System.Address) return String; 75 -- Identical to Image_Enumeration_8 except that it handles types 76 -- using array (0 .. Num) of Natural_32 for the Indexes table. 77 78end System.Img_Enum; 79