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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
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4 -- --
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5 -- S Y S T E M . C O N C A T _ 3 --
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6 -- --
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7 -- S p e c --
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8 -- --
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9 -- Copyright (C) 2008-2018, Free Software Foundation, Inc. --
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 -- This package contains a procedure for runtime concatenation of three string
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33 -- operands. It is used when we want to save space in the generated code.
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34
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35 pragma Compiler_Unit_Warning;
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36
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37 package System.Concat_3 is
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38
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39 procedure Str_Concat_3 (R : out String; S1, S2, S3 : String);
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40 -- Performs the operation R := S1 & S2 & S3. The bounds of R are known to
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41 -- be correct (usually set by a call to the Str_Concat_Bounds_3 procedure
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42 -- below), so no bounds checks are required, and it is known that none of
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43 -- the input operands overlaps R. No assumptions can be made about the
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44 -- lower bounds of any of the operands.
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45
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46 procedure Str_Concat_Bounds_3
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47 (Lo, Hi : out Natural;
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48 S1, S2, S3 : String);
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49 -- Assigns to Lo..Hi the bounds of the result of concatenating the three
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50 -- given strings, following the rules in the RM regarding null operands.
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51
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52 end System.Concat_3;
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