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------------------------------------------------------------------------------
-- --
-- DISPLAY_SOURCE COMPONENTS --
-- --
-- I M A G E _ T R A V --
-- --
-- S p e c --
-- --
-- Copyright (c) 1995-1999, Free Software Foundation, Inc. --
-- --
-- Display_Source is free software; you can redistribute it and/or modify it--
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 2, or (at your option) any later --
-- version. Display_Source is distributed in the hope that it will be use- --
-- ful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- --
-- CHANTABILITY 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, 59 Temple Place Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-- Display_Source is distributed as a part of the ASIS implementation for --
-- GNAT (ASIS-for-GNAT). --
-- --
-- The original version of Display_Source has been developed by --
-- Jean-Charles Marteau and Serge Reboul, ENSIMAG High School Graduates --
-- (Computer sciences) Grenoble, France in Sema Group Grenoble, France. --
-- --
-- Display_Source is now maintained by Ada Core Technologies Inc --
-- (http://www.gnat.com). --
------------------------------------------------------------------------------
-----------------------------------------------------------------
-- This package is part of the ASIS application display_source --
-----------------------------------------------------------------
-- It contains procedures to instantiate Traverse_Element with --
-- in order to make an image display of a source. (ie it --
-- displays something closer to the initial source than --
-- source display) --
-- If you compare it with source_trav, you'll see that it's --
-- based on Asis.Text, it's simpler, and probably better as --
-- a basis for many applications that would display Ada sources--
-- --
-- The basic principle of this application is to use spans, --
-- so we deal with spans corresponding to elements and span --
-- corresponding to the space between elements. --
-----------------------------------------------------------------
with Asis;
with Asis.Text;
package Image_Trav is
type Info_Image is record
-- Last_Printed_Span is used to know what has already been displayed
-- it is assumed that everything before the end of this span has been
-- displayed.
Last_Printed_Span : Asis.Text.Span := Asis.Text.Nil_Span;
-- An_Element is used by terminate_image in order to have some
-- element in the concerned library ...
-- You must set this to some element of your compilation_unit if you
-- want terminate_image to work.
An_Element : Asis.Element := Asis.Nil_Element;
-- Finishing_Traversal is used by terminate_image to finish the
-- the application.
Finishing_Traversal : Boolean := False;
-- Horizontal_Position is the current position of the cursor
-- in the output text.
-- It can be used as an indentation when you want to replace
-- something with another. (After a Display_Before).
Horizontal_Position : Natural := 0;
-- With_Comments says if we want or not to see comments displayed.
With_Comments : Boolean := True;
-- Handled_In_Pre : if True, it says to post_operation that the
-- last element has been displayed in Pre_operation and that
-- there is no point in printing it again ...
Handled_In_Pre : Boolean := False;
end record;
procedure Pre_Image
(Element : in Asis.Element;
Control : in out Asis.Traverse_Control;
State : in out Info_Image);
procedure Post_Image
(Element : in Asis.Element;
Control : in out Asis.Traverse_Control;
State : in out Info_Image);
procedure Initiate_Image
(Element : in Asis.Element;
Control : in out Asis.Traverse_Control;
State : in out Info_Image);
procedure Terminate_Image
(Control : in out Asis.Traverse_Control;
State : in out Info_Image);
end Image_Trav;
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