/usr/share/ada/adainclude/opentoken/opentoken-token-list_mixin.ads is in libopentoken5-dev 6.0b-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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--
-- Copyright (C) 2009, 2014 Stephe Leake
-- Copyright (C) 2000 Ted Dennison
--
-- This file is part of the OpenToken package.
--
-- The OpenToken package is free software; you can redistribute it and/or
-- modify it under the terms of the GNU General Public License as published
-- by the Free Software Foundation; either version 3, or (at your option)
-- any later version. The OpenToken package is distributed in the hope that
-- it will be useful, but WITHOUT 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 the OpenToken
-- package; see file GPL.txt. If not, write to the Free Software Foundation,
-- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
--
-- As a special exception, if other files instantiate generics from
-- this unit, or you link this unit with other files to produce an
-- executable, this unit does not by itself cause the resulting
-- executable to be covered by the GNU General Public License. This
-- exception does not however invalidate any other reasons why the
-- executable file might be covered by the GNU Public License.
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-- This package defines a generic list token for recursive descent
-- parsers. A list is a token that is made up of any number of
-- repetitions of other tokens, separated by a given separator token.
-------------------------------------------------------------------------------
generic
type Parent_Token is abstract new OpenToken.Token.Instance with private;
type Component_Token is abstract new OpenToken.Token.Instance with private;
package OpenToken.Token.List_Mixin is
type Instance is new Parent_Token with private;
subtype Class is Instance'Class;
type Handle is access all Class;
overriding
function Image (Item : in Instance) return String;
type List_Action is access procedure (List : in out Instance);
type Element_Action is access procedure
(List : in out Instance;
Element : in Component_Token'Class);
----------------------------------------------------------------------------
-- Return a new list token
----------------------------------------------------------------------------
function "**"
(Element : access Component_Token'Class;
Separator : access OpenToken.Token.Class)
return Instance;
----------------------------------------------------------------------
-- Add an Add_Element action to the instance
----------------------------------------------------------------------
function "*"
(Token : in Instance;
Add_Element : in Element_Action)
return Handle;
----------------------------------------------------------------------
-- Add an Initialize action to the instance
----------------------------------------------------------------------
function "+"
(Token : in Handle;
Initialize : in List_Action)
return Handle;
----------------------------------------------------------------------
-- Add a Build action to the instance
----------------------------------------------------------------------
function "-"
(Token : in Handle;
Build : in List_Action)
return Handle;
function Get
(Element : access Component_Token'Class;
Separator : access OpenToken.Token.Class;
Name : in String := "";
Lookahead : in Integer := Default_Lookahead;
Initialize : in List_Action := null;
Add_Element : in Element_Action := null;
Build : in List_Action := null)
return Instance;
function New_Instance
(Token : in Instance;
Name : in String := "";
Lookahead : in Integer := Default_Lookahead;
Initialize : in List_Action := null;
Add_Element : in Element_Action := null;
Build : in List_Action := null)
return Handle;
procedure Set_Lookahead (Token : in out Instance; Lookahead : in Integer);
--------------------------------------------------------------------------
-- Initialize is called before anything else happens.
--
-- Add_Element is called with every successive list element
-- that is recognized.
--
-- Build is called when the entire list has been recognized.
--------------------------------------------------------------------------
overriding procedure Parse
(Match : access Instance;
Analyzer : access Source_Class;
Actively : in Boolean := True);
overriding procedure Expecting (Token : access Instance; List : in out Linked_List.Instance);
private
type Component_Handle is access all Component_Token'Class;
type Instance is new Parent_Token with record
Element : Component_Handle;
Separator : OpenToken.Token.Handle;
Lookahead : Integer;
Initialize : List_Action;
Add_Element : Element_Action;
Build : List_Action;
end record;
end OpenToken.Token.List_Mixin;
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