projects / thirdparty / gcc.git / blame
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|---|---|---|
| 01b18343 RD |
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 | -- -- | |
| 748086b7 | 9 | -- Copyright (C) 2000-2009, Free Software Foundation, Inc. -- |
| 01b18343 RD |
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- -- | |
| 748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| 01b18343 RD |
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 -- | |
| 748086b7 JJ |
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/>. -- | |
| 01b18343 RD |
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 | ||
| 43 | pragma Warnings (Off); | |
| 44 | pragma Compiler_Unit; | |
| 45 | pragma Warnings (On); | |
| 46 | ||
| 47 | package System.Img_Enum_New is | |
| 48 | pragma Pure; | |
| 49 | ||
| 50 | procedure Image_Enumeration_8 | |
| 51 | (Pos : Natural; | |
| 52 | S : in out String; | |
| 53 | P : out Natural; | |
| 54 | Names : String; | |
| 55 | Indexes : System.Address); | |
| 56 | -- Used to compute Enum'Image (Str) where Enum is some enumeration type | |
| 57 | -- other than those defined in package Standard. Names is a string with | |
| 58 | -- a lower bound of 1 containing the characters of all the enumeration | |
| 59 | -- literals concatenated together in sequence. Indexes is the address of | |
| 60 | -- an array of type array (0 .. N) of Natural_8, where N is the number of | |
| 61 | -- enumeration literals in the type. The Indexes values are the starting | |
| 62 | -- subscript of each enumeration literal, indexed by Pos values, with an | |
| 63 | -- extra entry at the end containing Names'Length + 1. The reason that | |
| 64 | -- Indexes is passed by address is that the actual type is created on the | |
| 65 | -- fly by the expander. The desired 'Image value is stored in S (1 .. P) | |
| 66 | -- and P is set on return. The caller guarantees that S is long enough to | |
| 67 | -- hold the result and that the lower bound is 1. | |
| 68 | ||
| 69 | procedure Image_Enumeration_16 | |
| 70 | (Pos : Natural; | |
| 71 | S : in out String; | |
| 72 | P : out Natural; | |
| 73 | Names : String; | |
| 74 | Indexes : System.Address); | |
| 75 | -- Identical to Set_Image_Enumeration_8 except that it handles types | |
| 76 | -- using array (0 .. Num) of Natural_16 for the Indexes table. | |
| 77 | ||
| 78 | procedure Image_Enumeration_32 | |
| 79 | (Pos : Natural; | |
| 80 | S : in out String; | |
| 81 | P : out Natural; | |
| 82 | Names : String; | |
| 83 | Indexes : System.Address); | |
| 84 | -- Identical to Set_Image_Enumeration_8 except that it handles types | |
| 85 | -- using array (0 .. Num) of Natural_32 for the Indexes table. | |
| 86 | ||
| 87 | end System.Img_Enum_New; |