1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- S Y S T E M . I M G _ E N U M _ N E W -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2000-2011, 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-- This is the new version of the package, for use by compilers built after 38-- Nov 21st, 2007, which provides procedures that avoid using the secondary 39-- stack. The original package System.Img_Enum is maintained in the sources 40-- for bootstrapping with older versions of the compiler which expect to find 41-- functions in this package. 42 43pragma Compiler_Unit; 44 45package System.Img_Enum_New is 46 pragma Pure; 47 48 procedure Image_Enumeration_8 49 (Pos : Natural; 50 S : in out String; 51 P : out Natural; 52 Names : String; 53 Indexes : System.Address); 54 -- Used to compute Enum'Image (Str) where Enum is some enumeration type 55 -- other than those defined in package Standard. Names is a string with 56 -- a lower bound of 1 containing the characters of all the enumeration 57 -- literals concatenated together in sequence. Indexes is the address of 58 -- an array of type array (0 .. N) of Natural_8, where N is the number of 59 -- enumeration literals in the type. The Indexes values are the starting 60 -- subscript of each enumeration literal, indexed by Pos values, with an 61 -- extra entry at the end containing Names'Length + 1. The reason that 62 -- Indexes is passed by address is that the actual type is created on the 63 -- fly by the expander. The desired 'Image value is stored in S (1 .. P) 64 -- and P is set on return. The caller guarantees that S is long enough to 65 -- hold the result and that the lower bound is 1. 66 67 procedure Image_Enumeration_16 68 (Pos : Natural; 69 S : in out String; 70 P : out Natural; 71 Names : String; 72 Indexes : System.Address); 73 -- Identical to Set_Image_Enumeration_8 except that it handles types using 74 -- array (0 .. Num) of Natural_16 for the Indexes table. 75 76 procedure Image_Enumeration_32 77 (Pos : Natural; 78 S : in out String; 79 P : out Natural; 80 Names : String; 81 Indexes : System.Address); 82 -- Identical to Set_Image_Enumeration_8 except that it handles types using 83 -- array (0 .. Num) of Natural_32 for the Indexes table. 84 85end System.Img_Enum_New; 86