/usr/share/ada/adainclude/opentoken/ada_lexer.adb 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) 2008, 2012, 2013, 2014 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.Strings.Maps.Constants;
with OpenToken.Recognizer.Based_Integer_Ada_Style;
with OpenToken.Recognizer.Based_Real_Ada_Style;
with OpenToken.Recognizer.Character_Set;
with OpenToken.Recognizer.End_Of_File;
with OpenToken.Recognizer.Graphic_Character;
with OpenToken.Recognizer.Identifier;
with OpenToken.Recognizer.Integer;
with OpenToken.Recognizer.Keyword;
with OpenToken.Recognizer.Line_Comment;
with OpenToken.Recognizer.Nothing;
with OpenToken.Recognizer.Real;
with OpenToken.Recognizer.Separator;
with OpenToken.Recognizer.String;
with OpenToken.Text_Feeder.Text_IO;
with OpenToken.Token.Enumerated.Analyzer;
with OpenToken.Token.Enumerated;
package body Ada_Lexer is
package Master_Ada_Token is new OpenToken.Token.Enumerated
(Ada_Token, Ada_Token'First, Ada_Token'Last, Ada_Token'Image);
package Tokenizer is new Master_Ada_Token.Analyzer;
Syntax : constant Tokenizer.Syntax :=
(Abort_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("abort")),
Abs_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("abs")),
Abstract_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("abstract")),
Accept_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("accept")),
Access_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("access")),
Aliased_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("aliased")),
All_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("all")),
And_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("and")),
Array_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("array")),
At_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("at")),
Begin_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("begin")),
Body_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("body")),
Case_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("case")),
Constant_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("constant")),
Declare_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("declare")),
Delay_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("delay")),
Delta_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("delta")),
Digits_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("digits")),
Do_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("do")),
Else_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("else")),
Elsif_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("elsif")),
End_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("end")),
Entry_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("entry")),
Exception_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("exception")),
Exit_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("exit")),
For_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("for")),
Function_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("function")),
Generic_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("generic")),
Goto_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("goto")),
If_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("if")),
In_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("in")),
Interface_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("interface")),
Is_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("is")),
Limited_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("limited")),
Loop_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("loop")),
Mod_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("mod")),
New_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("new")),
Not_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("not")),
Null_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("null")),
Of_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("of")),
Or_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("or")),
Others_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("others")),
Out_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("out")),
Overriding_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("overriding")),
Package_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("package")),
Pragma_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("pragma")),
Private_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("private")),
Procedure_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("procedure")),
Protected_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("protected")),
Raise_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("raise")),
Range_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("range")),
Record_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("record")),
Rem_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("rem")),
Renames_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("renames")),
Requeue_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("requeue")),
Return_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("return")),
Reverse_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("reverse")),
Select_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("select")),
Separate_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("separate")),
Some_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("some")),
Subtype_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("subtype")),
Synchronized_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("synchronized")),
Tagged_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("tagged")),
Task_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("task")),
Terminate_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("terminate")),
Then_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("then")),
Type_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("type")),
Until_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("until")),
Use_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("use")),
When_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("when")),
While_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("while")),
With_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("with")),
Xor_T => Tokenizer.Get (OpenToken.Recognizer.Keyword.Get ("xor")),
Colon_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (":")),
Comma_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (",")),
Dot_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (".")),
Semicolon_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (";")),
Tick_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("'")),
Left_Parenthesis_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("(")),
Right_Parenthesis_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (")")),
Concatenate_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("&")),
Alternative_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("|")),
Equal_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("=")),
Not_Equal_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("/=")),
Greater_Than_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (">")),
Less_Than_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("<")),
Greater_Equal_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (">=")),
Less_Equal_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("<=")),
Plus_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("+")),
Minus_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("-")),
Times_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("*")),
Divide_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("/")),
Arrow_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("=>")),
Assignment_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (":=")),
Double_Dot_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("..")),
Exponentiate_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("**")),
Left_Label_Bracket_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("<<")),
Right_Label_Bracket_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get (">>")),
Box_T => Tokenizer.Get (OpenToken.Recognizer.Separator.Get ("<>")),
Integer_T => Tokenizer.Get (OpenToken.Recognizer.Integer.Get (Allow_Signs => False)),
Based_Integer_T => Tokenizer.Get (OpenToken.Recognizer.Based_Integer_Ada_Style.Get),
Real_T => Tokenizer.Get (OpenToken.Recognizer.Real.Get (Allow_Signs => False)),
Based_Real_T => Tokenizer.Get (OpenToken.Recognizer.Based_Real_Ada_Style.Get),
Character_T => Tokenizer.Get (OpenToken.Recognizer.Graphic_Character.Get),
String_T => Tokenizer.Get (OpenToken.Recognizer.String.Get),
Identifier_T => Tokenizer.Get
(OpenToken.Recognizer.Identifier.Get
(Start_Chars => Ada.Strings.Maps.Constants.Letter_Set,
Body_Chars => Ada.Strings.Maps.Constants.Alphanumeric_Set)),
Comment_T => Tokenizer.Get (OpenToken.Recognizer.Line_Comment.Get ("--")),
Whitespace_T => Tokenizer.Get (OpenToken.Recognizer.Character_Set.Get
(OpenToken.Recognizer.Character_Set.Standard_Whitespace)),
Bad_Token_T => Tokenizer.Get (OpenToken.Recognizer.Nothing.Get),
End_of_File_T => Tokenizer.Get (OpenToken.Recognizer.End_Of_File.Get));
Analyzer : constant Tokenizer.Handle := Tokenizer.Initialize (Syntax);
procedure Set_Input_Feeder (File : in Ada.Text_IO.File_Type) is
begin
Ada.Text_IO.Set_Input (File);
Analyzer.Set_Text_Feeder (OpenToken.Text_Feeder.Text_IO.Create (Ada.Text_IO.Current_Input));
end Set_Input_Feeder;
procedure Exception_on_Syntax_Error is
begin
Analyzer.Unset_Default;
end Exception_on_Syntax_Error;
procedure Bad_Token_on_Syntax_Error is
begin
Analyzer.Set_Default (Bad_Token_T);
end Bad_Token_on_Syntax_Error;
procedure Set_Comments_Reportable (To : in Boolean) is
begin
Syntax (Comment_T).Recognizer.Report := To;
end Set_Comments_Reportable;
Exclusion : constant array (Boolean) of Ada.Strings.Maps.Character_Set := -- see Find_Next
(False => Ada.Strings.Maps.Null_Set, -- character literal enabled
True => Ada.Strings.Maps.Constants.Graphic_Set); -- disabled
procedure Find_Next is
-- Take care that the expression Character'('x') is correctly processed:
-- A character literal cannot follow an identifier.
begin
Analyzer.Find_Next (Look_Ahead => False);
OpenToken.Recognizer.Graphic_Character.Redefine
(OpenToken.Recognizer.Graphic_Character.Instance (Syntax (Character_T).Recognizer.all),
Exclusion (Token_ID = Identifier_T));
end Find_Next;
function Line return Natural is
begin
return Analyzer.Line;
end Line;
function Column return Natural is
begin
return Analyzer.Column;
end Column;
function Token_ID return Ada_Token is
begin
return Analyzer.ID;
end Token_ID;
function Lexeme return String is
begin
return Analyzer.Lexeme;
end Lexeme;
end Ada_Lexer;
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