------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . I M G _ E N U M _ N E W -- -- -- -- S p e c -- -- -- -- Copyright (C) 2000-2017, 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 -- -- . -- -- -- -- 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. -- This is the new version of the package, for use by compilers built after -- Nov 21st, 2007, which provides procedures that avoid using the secondary -- stack. The original package System.Img_Enum is maintained in the sources -- for bootstrapping with older versions of the compiler which expect to find -- functions in this package. pragma Compiler_Unit_Warning; package System.Img_Enum_New is pragma Pure; procedure Image_Enumeration_8 (Pos : Natural; S : in out String; P : out Natural; Names : String; Indexes : System.Address); -- 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 desired 'Image value is stored in S (1 .. P) -- and P is set on return. The caller guarantees that S is long enough to -- hold the result and that the lower bound is 1. procedure Image_Enumeration_16 (Pos : Natural; S : in out String; P : out Natural; Names : String; Indexes : System.Address); -- Identical to Set_Image_Enumeration_8 except that it handles types using -- array (0 .. Num) of Natural_16 for the Indexes table. procedure Image_Enumeration_32 (Pos : Natural; S : in out String; P : out Natural; Names : String; Indexes : System.Address); -- Identical to Set_Image_Enumeration_8 except that it handles types using -- array (0 .. Num) of Natural_32 for the Indexes table. end System.Img_Enum_New;