projects / thirdparty / gcc.git / blame
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|---|---|---|
| cacbc350 RK |
1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT RUN-TIME COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- S Y S T E M . S T R I N G _ O P S _ C O N C A T _ 4 -- | |
| 6 | -- -- | |
| 7 | -- B o d y -- | |
| 8 | -- -- | |
| 748086b7 | 9 | -- Copyright (C) 1992-2009, Free Software Foundation, Inc. -- |
| cacbc350 RK |
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- -- |
| cacbc350 RK |
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/>. -- | |
| cacbc350 RK |
26 | -- -- |
| 27 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 28 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| cacbc350 RK |
29 | -- -- |
| 30 | ------------------------------------------------------------------------------ | |
| 31 | ||
| df46b832 AC |
32 | -- NOTE: This package is obsolescent. It is no longer used by the compiler |
| 33 | -- which now generates concatenation inline. It is retained only because | |
| 34 | -- it may be used during bootstrapping using old versions of the compiler. | |
| 35 | ||
| 2d9ea47f RD |
36 | pragma Warnings (Off); |
| 37 | pragma Compiler_Unit; | |
| 38 | pragma Warnings (On); | |
| 39 | ||
| cacbc350 RK |
40 | package body System.String_Ops_Concat_4 is |
| 41 | ||
| 42 | ------------------ | |
| 43 | -- Str_Concat_4 -- | |
| 44 | ------------------ | |
| 45 | ||
| 46 | function Str_Concat_4 (S1, S2, S3, S4 : String) return String is | |
| 47 | begin | |
| 48afdf8c | 48 | if S1'Length = 0 then |
| cacbc350 RK |
49 | return S2 & S3 & S4; |
| 50 | ||
| 51 | else | |
| 52 | declare | |
| 53 | L12 : constant Natural := S1'Length + S2'Length; | |
| 54 | L13 : constant Natural := L12 + S3'Length; | |
| 55 | L14 : constant Natural := L13 + S4'Length; | |
| 56 | R : String (S1'First .. S1'First + L14 - 1); | |
| 57 | ||
| 58 | begin | |
| 59 | R (S1'First .. S1'Last) := S1; | |
| 60 | R (S1'Last + 1 .. S1'First + L12 - 1) := S2; | |
| 61 | R (S1'First + L12 .. S1'First + L13 - 1) := S3; | |
| 62 | R (S1'First + L13 .. R'Last) := S4; | |
| 63 | return R; | |
| 64 | end; | |
| 65 | end if; | |
| 66 | end Str_Concat_4; | |
| 67 | ||
| 68 | end System.String_Ops_Concat_4; |