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1994-05-19
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------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- A D A . S T R I N G S . U N B O U N D E D --
-- --
-- S p e c --
-- --
-- $Revision: 1.4 $ --
-- --
-- Copyright (c) 1992,1993,1994 NYU, All Rights Reserved --
-- --
-- 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
-- --
------------------------------------------------------------------------------
with Ada.Strings.Maps;
package Ada.Strings.Unbounded is
Blank : constant Character := ' ';
type Unbounded_String is private;
Null_Unbounded_String : constant Unbounded_String;
type String_Access is access all String;
----------------------------
-- String Length Function --
----------------------------
function Length (Source : Unbounded_String) return Natural;
-----------------------------------------------------
-- Conversion, Catenation, and Selection Functions --
-----------------------------------------------------
function To_Unbounded_String (Source : String)
return Unbounded_String;
function To_String (Source : Unbounded_String) return String;
function "&" (Left, Right : Unbounded_String)
return Unbounded_String;
function "&" (Left : Unbounded_String; Right : String)
return Unbounded_String;
function "&" (Left : String; Right : Unbounded_String)
return Unbounded_String;
function "&" (Left : Unbounded_String; Right : Character)
return Unbounded_String;
function "&" (Left : Character; Right : Unbounded_String)
return Unbounded_String;
function Element
(Source : Unbounded_String;
Index : Positive)
return Character;
procedure Replace_Element
(Source : in out Unbounded_String;
Index : Positive;
By : Character);
function Slice
(Source : Unbounded_String;
Low : Positive;
High : Natural)
return String;
function "=" (Left, Right : Unbounded_String) return Boolean;
function "<" (Left, Right : Unbounded_String) return Boolean;
function "<=" (Left, Right : Unbounded_String) return Boolean;
function ">" (Left, Right : Unbounded_String) return Boolean;
function ">=" (Left, Right : Unbounded_String) return Boolean;
------------------------
-- Search Subprograms --
------------------------
function Index
(Source : Unbounded_String;
Pattern : String;
Going : Direction := Forward;
Mapping : Maps.Character_Mapping := Maps.Identity)
return Natural;
function Index
(Source : Unbounded_String;
Set : Maps.Character_Set;
Test : Membership := Inside;
Going : Direction := Forward)
return Natural;
function Index_Non_Blank
(Source : Unbounded_String;
Going : Direction := Forward)
return Natural;
function Count
(Source : Unbounded_String;
Pattern : String;
Mapping : Maps.Character_Mapping := Maps.Identity)
return Natural;
function Count
(Source : Unbounded_String;
Set : Maps.Character_Set)
return Natural;
procedure Find_Token
(Source : Unbounded_String;
Set : Maps.Character_Set;
Test : Membership;
First : out Positive;
Last : out Natural);
------------------------------------
-- String Translation Subprograms --
------------------------------------
function Translate
(Source : Unbounded_String;
Mapping : Maps.Character_Mapping)
return Unbounded_String;
procedure Translate
(Source : in out Unbounded_String;
Mapping : Maps.Character_Mapping);
---------------------------------------
-- String Transformation Subprograms --
---------------------------------------
function Replace_Slice
(Source : Unbounded_String;
Low : Positive;
High : Natural;
By : String)
return Unbounded_String;
function Insert
(Source : Unbounded_String;
Before : Positive;
New_Item : String)
return Unbounded_String;
function Overwrite
(Source : Unbounded_String;
Position : Positive;
New_Item : String)
return Unbounded_String;
function Delete
(Source : Unbounded_String;
From : Positive;
Through : Natural)
return Unbounded_String;
function Trim
(Source : Unbounded_String)
return Unbounded_String;
function Trim
(Source : Unbounded_String;
Left : Maps.Character_Set;
Right : Maps.Character_Set)
return Unbounded_String;
function Head
(Source : Unbounded_String;
Count : Natural;
Pad : Character := Blank)
return Unbounded_String;
function Tail
(Source : Unbounded_String;
Count : Natural;
Pad : Character := Blank)
return Unbounded_String;
function "*"
(Left : Natural;
Right : Character)
return Unbounded_String;
function "*"
(Left : Natural;
Right : String)
return Unbounded_String;
function "*"
(Left : Natural;
Right : Unbounded_String)
return Unbounded_String;
private
type Unbounded_String is record
Reference : String_Access := new String'("");
end record;
Null_Unbounded_String : constant Unbounded_String :=
(Reference => new String'(""));
end Ada.Strings.Unbounded;