/usr/share/ada/adainclude/opentoken/ada_lexer.ads is in libopentoken5-dev 6.0b-4.
This file is owned by root:root, with mode 0o644.
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--
-- Copyright (C) 2012 Stephen Leake
-- Copyright (C) 1999, 2008 Christoph Karl Walter Grein
--
-- 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.
-------------------------------------------------------------------------------
with Ada.Text_IO;
package Ada_Lexer is
---------------------------------------------------------------------
-- This is a lexical analyser for the Ada 2012 language.
--
-- There is another lexer for the Ada and Java languages at:
-- <http://home.T-Online.de/home/Christ-Usch.Grein/Ada/Lexer.html>
---------------------------------------------------------------------
type Ada_Token is
(
-- Reserved words ARM 2.9 (2)
Abort_T, Abs_T, Abstract_T, Accept_T, Access_T, Aliased_T, All_T, And_T, Array_T, At_T,
Begin_T, Body_T,
Case_T, Constant_T,
Declare_T, Delay_T, Delta_T, Digits_T, Do_T,
Else_T, Elsif_T, End_T, Entry_T, Exception_T, Exit_T,
For_T, Function_T,
Generic_T, Goto_T,
If_T, In_T, Interface_T, Is_T,
Limited_T, Loop_T,
Mod_T,
New_T, Not_T, Null_T,
Of_T, Or_T, Others_T, Out_T, Overriding_T,
Package_T, Pragma_T, Private_T, Procedure_T, Protected_T,
Raise_T, Range_T, Record_T, Rem_T, Renames_T, Requeue_T, Return_T, Reverse_T,
Select_T, Separate_T, Some_T, Subtype_T, Synchronized_T,
Tagged_T, Task_T, Terminate_T, Then_T, Type_T,
Until_T, Use_T,
When_T, While_T, With_T,
Xor_T,
-- Delimiters ARM 2.2 (9)
-- & ' ( ) * + , - . / : ; < = > |
-- Compound delimiters ARM 2.2 (11)
-- => .. ** := /= >= <= << >> <>
Colon_T, Comma_T, Dot_T, Semicolon_T, Tick_T, -- : , . ; '
Left_Parenthesis_T, Right_Parenthesis_T, -- ( )
Concatenate_T, -- &
Alternative_T, -- |
Equal_T, Not_Equal_T, Greater_Than_T, Less_Than_T, -- = /= > <
Greater_Equal_T, Less_Equal_T, -- >= <=
Plus_T, Minus_T, Times_T, Divide_T, -- + - * /
Arrow_T, Assignment_T, Double_Dot_T, Exponentiate_T, -- => := .. **
Left_Label_Bracket_T, Right_Label_Bracket_T, Box_T, -- << >> <>
-- Literals ARM 2.4 .. 2.6
Integer_T, -- 1, 1E+10
Based_Integer_T, -- 13#C#, 13#C#E+10
Real_T, -- -3.141, 1.0E+10
Based_Real_T, -- 13#C.B#, 13#C.B#E+5
Character_T, String_T,
-- Other tokens
Identifier_T,
Comment_T,
Whitespace_T,
-- Syntax error
Bad_Token_T,
--
End_of_File_T);
-- Define the file where to find the code to be processed.
-- The file must be open for reading.
procedure Set_Input_Feeder (File : in Ada.Text_IO.File_Type);
-- In case of syntax errors:
-- Define whether the Syntax_Error exception shall be raised (default)
-- or the Bad_Token_T token shall be be returned.
procedure Exception_on_Syntax_Error;
procedure Bad_Token_on_Syntax_Error;
-- Change reportability of comments (off by default).
procedure Set_Comments_Reportable (To : in Boolean);
-- Find the next reportable token.
procedure Find_Next;
-- Query the current token:
function Line return Natural;
function Column return Natural;
function Token_ID return Ada_Token;
function Lexeme return String;
end Ada_Lexer;
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