63 lines
3.5 KiB
Ada
63 lines
3.5 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- S Y S T E M . B O U N D E D _ S T R I N G S --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2016, AdaCore --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- A very simple implentation of bounded strings, used by tracebacks
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package System.Bounded_Strings is
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type Bounded_String (Max_Length : Natural) is limited private;
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-- A string whose length is bounded by Max_Length. The bounded string is
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-- empty at initialization.
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procedure Append (X : in out Bounded_String; C : Character);
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procedure Append (X : in out Bounded_String; S : String);
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-- Append a character or a string to X. If the bounded string is full,
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-- extra characters are simply dropped.
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function To_String (X : Bounded_String) return String;
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function "+" (X : Bounded_String) return String renames To_String;
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-- Convert to a normal string
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procedure Append_Address (X : in out Bounded_String; A : Address);
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-- Append an address to X
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function Is_Full (X : Bounded_String) return Boolean;
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-- Return True iff X is full and any character or string will be dropped
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-- if appended.
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private
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type Bounded_String (Max_Length : Natural) is limited record
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Length : Natural := 0;
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-- Current length of the string
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Chars : String (1 .. Max_Length);
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-- String content
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end record;
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end System.Bounded_Strings;
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