%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  This file is part of Logtalk <http://logtalk.org/>  
%  Copyright (c) 1998-2015 Paulo Moura <pmoura@logtalk.org>
%
%  Adapter file for Ciao Prolog 1.14.0
%  Last updated on May 13, 2015
%
%  This program 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 of the License, or
%  (at your option) any later version.
%  
%  This program 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
%  along with this program.  If not, see <http://www.gnu.org/licenses/>.
%  
%  Additional licensing terms apply per Section 7 of the GNU General
%  Public License 3. Consult the `LICENSE.txt` file for details.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



:- use_package(iso).

:- use_package(runtime_ops).
:- use_package(hiord).

:- use_module(library(compiler)).
:- use_module(library(system)).
:- use_module(library(prolog_sys)).
:- use_module(library(sort)).
:- use_module(library(filenames)).
:- use_module(library(terms_vars)).

:- set_prolog_flag(multi_arity_warnings, off).

:- op(1200, xfx, [(-->)]).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ISO Prolog Standard predicates that we must define because they are
%  not built-in
%
%  add a clause for '$lgt_iso_predicate'/1 declaring each ISO predicate that
%  we must define; there must be at least one clause for this predicate
%  whose call should fail if we don't define any ISO predicates
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_iso_predicate'(?callable).

'$lgt_iso_predicate'(term_variables(_, _)).

term_variables(Term, Variables) :-
	varsbag(Term, Variables, []).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  predicate properties
%
%  this predicate must return at least static, dynamic, and built_in 
%  properties for an existing predicate (and ideally meta_predicate/1
%  properties for built-in predicates and library predicates)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_predicate_property'(+callable, ?predicate_property)


'$lgt_predicate_property'(Pred, built_in) :-
	'$lgt_iso_spec_predicate'(Pred).

'$lgt_predicate_property'(Pred, static) :-
	predicate_property(Pred, compiled).

'$lgt_predicate_property'(Pred, static) :-
	functor(Pred, Functor, Arity),
	atom_concat('user:', Functor, Functor2),
	functor(Pred2, Functor2, Arity),
	predicate_property(Pred2, compiled).

'$lgt_predicate_property'(Pred, Prop) :-
	predicate_property(Pred, Prop).

'$lgt_predicate_property'(Pred, Prop) :-
	functor(Pred, Functor, Arity),
	atom_concat('user:', Functor, Functor2),
	functor(Pred2, Functor2, Arity),
	predicate_property(Pred2, Prop).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  meta-predicates
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% setup_call_cleanup(+callable, +callable, +callable) -- not supported


% between(+integer, +integer, ?integer) -- built-in


% forall(+callable, +callable)

forall(Generate, Test) :-
	\+ (Generate, \+ Test).


% call/2-7

call(F, A) :-
	Call =.. [F, A],
	call(Call).

call(F, A1, A2) :-
	Call =.. [F, A1, A2],
	call(Call).

call(F, A1, A2, A3) :-
	Call =.. [F, A1, A2, A3],
	call(Call).

call(F, A1, A2, A3, A4) :-
	Call =.. [F, A1, A2, A3, A4],
	call(Call).

call(F, A1, A2, A3, A4, A5) :-
	Call =.. [F, A1, A2, A3, A4, A5],
	call(Call).

call(F, A1, A2, A3, A4, A5, A6) :-
	Call =.. [F, A1, A2, A3, A4, A5, A6],
	call(Call).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Prolog non-standard built-in meta-predicates and meta-directives
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_prolog_meta_predicate'(@callable, ?callable, ?atom)
%
% table of meta-predicate patterns for proprietary built-in predicates;
% the third argument, which must be either "predicate" or "control_construct",
% is used to guide the compilation of these meta-predicates in debug mode

'$lgt_prolog_meta_predicate'(if(_, _, _), if(0, 0, 0), predicate).


% '$lgt_prolog_meta_directive'(@callable, -callable)

'$lgt_prolog_meta_directive'(data(_), data(/)).
'$lgt_prolog_meta_directive'(prop(_), prop(/)).


% '$lgt_prolog_to_logtalk_meta_argument_specifier_hook'(@nonvar, -atom)

'$lgt_prolog_to_logtalk_meta_argument_specifier_hook'(_, _) :-
	fail.


% '$lgt_prolog_database_predicate'(@callable)

'$lgt_prolog_database_predicate'(_) :-
	fail.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  file name extension predicates
%
%  these extensions are used by Logtalk load/compile predicates
%
%  you may want to change the extension for the intermediate files 
%  generated by the Logtalk compiler ("object" files) to match the
%  extension expected by default by your Prolog compiler
%
%  there should only a single extension defined for object files but
%  but multiple extensions can be defined for Logtalk and Prolog source
%  files and for back-end specific temporary files
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_file_extension'(?atom, ?atom)

'$lgt_file_extension'(logtalk, '.lgt').
'$lgt_file_extension'(logtalk, '.logtalk').
'$lgt_file_extension'(object, '.pl').
'$lgt_file_extension'(prolog, '.pl').
'$lgt_file_extension'(prolog, '.prolog').
'$lgt_file_extension'(tmp, '.itf').
'$lgt_file_extension'(tmp, '.po').



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  back-end Prolog compiler features
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_prolog_feature'(?atom, ?atom)
%
% back-end Prolog compiler supported features (that are compatible with Logtalk)

'$lgt_prolog_feature'(prolog_dialect, ciao).
'$lgt_prolog_feature'(prolog_version, (Major, Minor, Patch)) :-
	current_prolog_flag(version, ciao(Version, Patch)),
	Major is truncate(float_integer_part(Version)),
	Minor is truncate(float_fractional_part(Version)*100).
'$lgt_prolog_feature'(prolog_compatible_version, @>=((1,10,5))).
'$lgt_prolog_feature'(prolog_conformance, lax).

'$lgt_prolog_feature'(encoding_directive, unsupported).
'$lgt_prolog_feature'(tabling, unsupported).
'$lgt_prolog_feature'(threads, unsupported).
'$lgt_prolog_feature'(modules, supported).
'$lgt_prolog_feature'(coinduction, unsupported).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  default flag values
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_default_flag'(?atom, ?atom)
%
% default values for all flags

% startup flags:
'$lgt_default_flag'(settings_file, allow).
% lint compilation flags:
'$lgt_default_flag'(unknown_entities, warning).
'$lgt_default_flag'(unknown_predicates, warning).
'$lgt_default_flag'(undefined_predicates, warning).
'$lgt_default_flag'(singleton_variables, warning).
'$lgt_default_flag'(portability, silent).
'$lgt_default_flag'(redefined_built_ins, silent).
'$lgt_default_flag'(missing_directives, warning).
'$lgt_default_flag'(underscore_variables, dont_care).
% optional features compilation flags:
'$lgt_default_flag'(complements, deny).
'$lgt_default_flag'(dynamic_declarations, deny).
'$lgt_default_flag'(events, deny).
'$lgt_default_flag'(context_switching_calls, allow).
% other compilation flags:
'$lgt_default_flag'(scratch_directory, ScratchDirectory) :-
	(	get_os(Name), (Name == 'LINUX'; Name == 'DARWIN'; Name == 'Solaris') ->
		ScratchDirectory = './.lgt_tmp/'
	;	ScratchDirectory = './lgt_tmp/'
	).
'$lgt_default_flag'(report, on).
'$lgt_default_flag'(clean, on).
'$lgt_default_flag'(code_prefix, '$').
'$lgt_default_flag'(optimize, off).
'$lgt_default_flag'(source_data, on).
'$lgt_default_flag'(reload, changed).
'$lgt_default_flag'(debug, off).
% Prolog compiler and loader flags:
'$lgt_default_flag'(prolog_compiler, []).
'$lgt_default_flag'(prolog_loader, []).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  operating-system access predicates
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_expand_path'(+nonvar, -atom)
%
% expands a file path to a full path

'$lgt_expand_path'(Path, ExpandedPath) :-
	absolute_file_name(Path, ExpandedPath).


% '$lgt_file_exists'(+atom)
%
% checks if a file exists

'$lgt_file_exists'(File) :-
	file_exists(File).


% '$lgt_delete_file'(+atom)
%
% deletes a file

'$lgt_delete_file'(File) :-
	delete_file(File).


% '$lgt_directory_exists'(+atom)
%
% checks if a directory exists

'$lgt_directory_exists'(Directory) :-
	file_exists(Directory),
	file_property(Directory, type(directory)).


% '$lgt_current_directory'(-atom)
%
% gets current working directory

'$lgt_current_directory'(Directory) :-
	working_directory(Directory, Directory).


% '$lgt_change_directory'(+atom)
%
% changes current working directory

'$lgt_change_directory'(Directory) :-
	cd(Directory).


% '$lgt_make_directory'(+atom)
%
% makes a new directory; succeeds if the directory already exists

'$lgt_make_directory'(Directory) :-
	(	file_exists(Directory) ->
		true
	;	make_directory(Directory)
	).


% '$lgt_compile_prolog_code'(+atom, +atom, +list)
%
% compile to disk a Prolog file, resulting from a
% Logtalk source file, given a list of flags

'$lgt_compile_prolog_code'(_, _, _).


% '$lgt_load_prolog_code'(+atom, +atom, +list)
%
% compile and load a Prolog file, resulting from a
% Logtalk source file, given a list of flags

'$lgt_load_prolog_code'(File, _, _) :-
	set_prolog_flag(multi_arity_warnings, off),
	ensure_loaded(File).


% '$lgt_file_modification_time'(+atom, -nonvar)
%
% gets a file modification time, assumed to be an opaque term but comparable

'$lgt_file_modification_time'(File, Time) :-
	file_property(File, mod_time(Time)).


% '$lgt_environment_variable'(?atom, ?atom)
%
% access to operating-system environment variables

'$lgt_environment_variable'(Variable, Value) :-
	getenvstr(Variable, String),
	atom_codes(Value, String).


% '$lgt_startup_directory'(-atom)
%
% returns the Logtalk startup directory

'$lgt_startup_directory'(Directory) :-
	(	getenvstr('LOGTALK_STARTUP_DIRECTORY', String) ->
		atom_codes(Directory, String)
	;	working_directory(Directory, Directory)
	).


% '$lgt_user_directory'(-atom)
%
% returns the Logtalk user directory; fails if unknown

'$lgt_user_directory'(Directory) :-
	getenvstr('LOGTALKUSER', String),
	atom_codes(Directory, String).


% '$lgt_home_directory'(-atom)
%
% returns the Logtalk home directory; fails if unknown

'$lgt_home_directory'(Directory) :-
	getenvstr('LOGTALKHOME', String),
	atom_codes(Directory, String).


% '$lgt_decompose_file_name'(+atom, ?atom, ?atom, ?atom)
%
% decomposes a file path in its components; the directory must always end
% with a slash; the extension must start with a "." when defined and must
% be the empty atom when it does not exist

'$lgt_decompose_file_name'(File, Directory, Name, Extension) :-
	atom_codes(File, FileCodes),
	(	'$lgt_strrch'(FileCodes, 0'/, [_Slash| BasenameCodes]) ->
		atom_codes(Basename, BasenameCodes),
		atom_concat(Directory, Basename, File)
	;	Directory = './',
		atom_codes(Basename, FileCodes),
		BasenameCodes = FileCodes
	),
	(	'$lgt_strrch'(BasenameCodes, 0'., ExtensionCodes) ->
		atom_codes(Extension, ExtensionCodes),
		atom_concat(Name, Extension, Basename)
	;	Name = Basename,
		Extension = ''
	).

% the following auxiliary predicate was written by Per Mildner and 
% is used here (renamed just to avoid conflicts) with permission

'$lgt_strrch'(Xs, G, Ys) :-
	Xs = [X| Xs1],
	(	X == G ->
		'$lgt_strrch1'(Xs1, G, Xs, Ys)
	;	'$lgt_strrch'(Xs1, G, Ys)
	).

'$lgt_strrch1'(Xs, _G, _Prev, _Ys) :-
	var(Xs),
	!,
	fail.
'$lgt_strrch1'([], _G, Prev, Ys) :-
	Ys = Prev.
'$lgt_strrch1'(Xs, G, Prev, Ys) :-
	Xs = [X| Xs1],
	(	X == G ->
		'$lgt_strrch1'(Xs1, G, Xs, Ys)
	;	'$lgt_strrch1'(Xs1, G, Prev, Ys)
	).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  read character predicate
%
%  read a single character echoing it and writing a newline after
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


'$lgt_read_single_char'(Char) :-
	get_code(Code), char_code(Char, Code),
	(	Code =:= 10 ->
		true
	;	peek_code(10) ->	% hack to workaround the lack of built-in
		get_code(_)			% support for unbuffered character input
	;	true
	).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  getting stream current line number
%  (needed for improved compiler error messages)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_stream_current_line_number'(@stream, -integer)

'$lgt_stream_current_line_number'(Stream, Line) :-
	line_count(Stream, Last),
	Line is Last + 1.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  customized version of the read_term/3 predicate for returning the term
%  position (start and end lines; needed for improved error messages) and
%  the variable names (ideally using the standard variable_names/1 option)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_read_term'(@stream, -term, +list, -position)

'$lgt_read_term'(Stream, Term, Options, LineBegin-LineEnd) :-
	line_count(Stream, LineBegin),
	read_term(Stream, Term, Options),
	line_count(Stream, LineEnd),
	!.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Prolog dialect specific term and goal expansion
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_prolog_term_expansion'(@callable, -callable)

'$lgt_prolog_term_expansion'((:- Directive), Expanded) :-
	'$lgt_ciao_directive_expansion'(Directive, Expanded0),
	(	Expanded0 == [] ->
		Expanded  == []
	;	Expanded0 =  {ExpandedDirective} ->
		Expanded  =  {(:- ExpandedDirective)}
	;	Expanded  =  (:- Expanded0)
	).


'$lgt_ciao_directive_expansion'(imports(Module, Imports), uses(Module, Imports)).
'$lgt_ciao_directive_expansion'(meta_predicate(Template), meta_predicate(CTemplate)) :-
	logtalk_load_context(entity_type, _),
	'$lgt_ciao_directive_meta_predicate'(Template, CTemplate).
'$lgt_ciao_directive_expansion'(module(Module, Exports, []), module(Module, Exports)) :-
	(	var(Module) ->		% module name taken from file name
		'$lgt_ciao_find_module_name'(Module)
	;	true
	).
'$lgt_ciao_directive_expansion'(module(Module, Exports, [assertions]), module(Module, Exports)) :-
	(	var(Module) ->		% module name taken from file name
		'$lgt_ciao_find_module_name'(Module)
	;	true
	).


'$lgt_ciao_find_module_name'(Module) :-
	stream_property(Stream, mode(read)),
	stream_property(Stream, file_name(Path)),
	no_path_file_name(Path, File),
	extension(File, '.lgt'),
	basename(File, Module),
	!.


'$lgt_ciao_directive_meta_predicate'(Template, CTemplate) :-
	functor(Template, Functor, Arity),
	'$lgt_compile_predicate_indicators'(Functor/Arity, _, CFunctor/CArity),
	Template =.. [Functor| Args],
	'$lgt_ciao_directive_meta_predicate_args'(Args, CArgs),
	CTemplate =.. [CFunctor| CArgs].

'$lgt_ciao_directive_meta_predicate_args'([], []).
'$lgt_ciao_directive_meta_predicate_args'([Arg| Args], [CArg| CArgs]) :-
	'$lgt_ciao_directive_meta_predicate_arg'(Arg, CArg),
	'$lgt_ciao_directive_meta_predicate_args'(Args, CArgs).

'$lgt_ciao_directive_meta_predicate_arg'(clause, ::).
'$lgt_ciao_directive_meta_predicate_arg'(fact, ::).
'$lgt_ciao_directive_meta_predicate_arg'(goal, 0).
'$lgt_ciao_directive_meta_predicate_arg'(+, *).
'$lgt_ciao_directive_meta_predicate_arg'(?, *).
'$lgt_ciao_directive_meta_predicate_arg'(-, *).


% '$lgt_prolog_goal_expansion'(@callable, -callable)

'$lgt_prolog_goal_expansion'(_, _) :-
	fail.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  converts between Prolog stream encoding names and XML encoding names
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_logtalk_prolog_encoding'(?atom, ?atom, +stream)

'$lgt_logtalk_prolog_encoding'(_, _, _) :-
	fail.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  lambda expressions support predicates
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_copy_term_without_constraints'(@term, ?term)

'$lgt_copy_term_without_constraints'(Term, Copy) :-
	copy_term(Term, Copy).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  hooks predicates for writing and asserting compiled entity terms
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_write_compiled_term'(@stream, @callable, +atom, +atom, +integer)
%
% the third argument is the term type: runtime (internal runtime clause),
% user (compiled user-defined term), or aux (auxiliary clause resulting
% e.g. from term-expansion)

'$lgt_write_compiled_term'(Stream, Term, _Kind, _Path, _Line) :-
	write_canonical(Stream, Term),
	write(Stream, '.\n').


% '$lgt_assertz_entity_clause'(@clause, +atom)

'$lgt_assertz_entity_clause'(Clause, _Kind) :-
	assertz(Clause).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  error term normalization (when exception terms don't follow the ISO
%  Prolog standard)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_normalize_error_term'(@callable, -callable)

'$lgt_normalize_error_term'(error(existence_error(procedure, ModFunctor/Arity), _), error(existence_error(procedure, Functor/Arity), _)) :-
	atom_concat('user:', Functor, ModFunctor).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  message token printing
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


%:- multifile('$logtalk#0.print_message_token#4'/5).
%:- dynamic('$logtalk#0.print_message_token#4'/5).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  string built-in type
%
%  define these predicates to trivially fail if no string type is available
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_string'(@term)

'$lgt_string'(_) :-
	fail.


% '$lgt_string_codes'(+string, -list(codes))
% '$lgt_string_codes'(-string, +list(codes))

'$lgt_string_codes'(_, _) :-
	fail.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  default user module
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


% '$lgt_user_module_qualification'(@callable, -callable)

'$lgt_user_module_qualification'(Goal, user:Goal).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  shortcuts to the Logtalk built-in predicates logtalk_load/1 and
%  logtalk_make/1
%
%  defined in the adapter files to make it easier to comment them out in case
%  of conflict with some Prolog native feature; they require conformance with
%  the ISO Prolog standard regarding the definition of the {}/1 syntax
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


{*} :-
	!,
	logtalk_make(all).
{!} :-
	!,
	logtalk_make(clean).


{File, Files} :-
	!,
	logtalk_load(File),
	{Files}.
{File} :-
	logtalk_load(File).



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  end!
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
