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/* Part of XPCE --- The SWI-Prolog GUI toolkit
Author: Jan Wielemaker and Anjo Anjewierden
E-mail: J.Wielemaker@vu.nl
WWW: http://www.swi-prolog.org/packages/xpce/
Copyright (c) 2003-2013, University of Amsterdam
VU University Amsterdam
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
:- module(pce_prolog_xref,
[ xref_source/1, % +Source
xref_source/2, % +Source, +Options
xref_called/3, % ?Source, ?Callable, ?By
xref_defined/3, % ?Source. ?Callable, -How
xref_definition_line/2, % +How, -Line
xref_exported/2, % ?Source, ?Callable
xref_module/2, % ?Source, ?Module
xref_op/2, % ?Source, ?Op
xref_clean/1, % +Source
xref_current_source/1, % ?Source
xref_done/2, % +Source, -Time
xref_built_in/1, % ?Callable
xref_source_file/3, % +Spec, -Path, +Source
xref_source_file/4, % +Spec, -Path, +Source, +Options
xref_public_list/4, % +Path, -Export, +Src
xref_meta/2, % +Goal, -Called
xref_hook/1, % ?Callable
% XPCE class references
xref_used_class/2, % ?Source, ?ClassName
xref_defined_class/3 % ?Source, ?ClassName, -How
]).
:- use_module(library(pce)).
:- use_module(library(prolog_xref)).
:- multifile
prolog:xref_source_identifier/2, % +Source, -Id
prolog:xref_source_directory/2, % +Source, -Dir
prolog:xref_open_source/2. % +SourceId, -Stream
%! prolog:xref_source_identifier(+Object, -Ref)
%
% The cross-referencer runs faster if the reference is an
% indexable term. Therefore we strip the XPCE @ from the object.
prolog:xref_source_identifier(Object, Ref) :-
object(Object),
!,
Object = @Ref.
prolog:xref_source_identifier(Ref, Ref) :-
integer(Ref),
!.
%! prolog:xref_source_directory(+Source, -Dir)
%
% Find the directory of a PceEmacs buffer to resolve relative paths.
prolog:xref_source_directory(SourceId, Dir) :-
integer(SourceId),
Obj = @SourceId,
object(Obj),
catch(get(Obj?file, absolute_path, Path), _, fail),
file_directory_name(Path, Dir).
%! prolog:xref_open_source(+Source, -Stream)
%
% Open the PceEmacs as a Prolog stream.
prolog:xref_open_source(SourceId, Stream) :-
integer(SourceId),
Obj = @SourceId,
object(Obj),
pce_open(Obj, read, Stream),
( catch(get(Obj?file, absolute_path, Path), _, fail)
-> set_stream(Stream, file_name(Path))
; true
).
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