402 lines
9.6 KiB
Perl
402 lines
9.6 KiB
Perl
|
/* $Id$
|
||
|
|
|
||
|
|
Part of SWI-Prolog
|
||
|
|
|
||
|
|
Author: Jan Wielemaker
|
||
|
|
E-mail: J.Wielemaker@uva.nl
|
||
|
|
WWW: http://www.swi-prolog.org
|
||
|
|
Copyright (C): 1985-2008, University of Amsterdam
|
||
|
|
|
||
|
|
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 2
|
||
|
|
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 Lesser General Public
|
||
|
|
License along with this library; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
|
||
|
|
As a special exception, if you link this library with other files,
|
||
|
|
compiled with a Free Software compiler, to produce an executable, this
|
||
|
|
library 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 General Public License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
:- module(quintus,
|
||
|
|
[ % unix/1,
|
||
|
|
% file_exists/1,
|
||
|
|
|
||
|
|
abs/2,
|
||
|
|
sin/2,
|
||
|
|
cos/2,
|
||
|
|
tan/2,
|
||
|
|
log/2,
|
||
|
|
log10/2,
|
||
|
|
pow/3,
|
||
|
|
ceiling/2,
|
||
|
|
floor/2,
|
||
|
|
round/2,
|
||
|
|
acos/2,
|
||
|
|
asin/2,
|
||
|
|
atan/2,
|
||
|
|
atan2/3,
|
||
|
|
sign/2,
|
||
|
|
sqrt/2,
|
||
|
|
|
||
|
|
genarg/3,
|
||
|
|
|
||
|
|
(mode)/1,
|
||
|
|
(public)/1,
|
||
|
|
no_style_check/1,
|
||
|
|
otherwise/0,
|
||
|
|
simple/1,
|
||
|
|
% statistics/2, % Please access as quintus:statistics/2
|
||
|
|
prolog_flag/2,
|
||
|
|
|
||
|
|
date/1, % -date(Year, Month, Day)
|
||
|
|
|
||
|
|
current_stream/3, % ?File, ?Mode, ?Stream
|
||
|
|
stream_position/3, % +Stream, -Old, +New
|
||
|
|
skip_line/0,
|
||
|
|
skip_line/1, % +Stream
|
||
|
|
|
||
|
|
compile/1, % +File(s)
|
||
|
|
|
||
|
|
atom_char/2,
|
||
|
|
midstring/3, % ABC, B, AC
|
||
|
|
midstring/4, % ABC, B, AC, LenA
|
||
|
|
midstring/5, % ABC, B, AC, LenA, LenB
|
||
|
|
midstring/6, % ABC, B, AC, LenA, LenB, LenC
|
||
|
|
|
||
|
|
raise_exception/1, % +Exception
|
||
|
|
on_exception/3 % +Ball, :Goal, :Recover
|
||
|
|
]).
|
||
|
|
:- use_module(library(lists), [member/2]).
|
||
|
|
|
||
|
|
/** <module> Quintus compatibility
|
||
|
|
|
||
|
|
This module defines several predicates from the Quintus Prolog
|
||
|
|
libraries. Note that our library structure is totally different. If this
|
||
|
|
library were complete, Prolog code could be ported by removing the
|
||
|
|
use_module/1 declarations, relying on the SWI-Prolog autoloader.
|
||
|
|
|
||
|
|
Bluffers guide to porting:
|
||
|
|
|
||
|
|
* Remove =|use_module(library(...))|=
|
||
|
|
* Run =|?- list_undefined.|=
|
||
|
|
* Fix problems
|
||
|
|
|
||
|
|
Of course, this library is incomplete ...
|
||
|
|
*/
|
||
|
|
|
||
|
|
/********************************
|
||
|
|
* SYSTEM INTERACTION *
|
||
|
|
*********************************/
|
||
|
|
|
||
|
|
% %% unix(+Action)
|
||
|
|
% % interface to Unix.
|
||
|
|
|
||
|
|
% unix(system(Command)) :-
|
||
|
|
% shell(Command).
|
||
|
|
% unix(shell(Command)) :-
|
||
|
|
% shell(Command).
|
||
|
|
% unix(shell) :-
|
||
|
|
% shell.
|
||
|
|
% unix(access(File, 0)) :-
|
||
|
|
% access_file(File, read).
|
||
|
|
% unix(cd) :-
|
||
|
|
% expand_file_name(~, [Home]),
|
||
|
|
% working_directory(_, Home).
|
||
|
|
% unix(cd(Dir)) :-
|
||
|
|
% working_directory(_, Dir).
|
||
|
|
% unix(args(L)) :-
|
||
|
|
% current_prolog_flag(argv, L).
|
||
|
|
% unix(argv(L)) :-
|
||
|
|
% current_prolog_flag(argv, S),
|
||
|
|
% maplist(to_prolog, S, L).
|
||
|
|
|
||
|
|
% to_prolog(S, A) :-
|
||
|
|
% name(S, L),
|
||
|
|
% name(A, L).
|
||
|
|
|
||
|
|
|
||
|
|
/********************************
|
||
|
|
* META PREDICATES *
|
||
|
|
*********************************/
|
||
|
|
|
||
|
|
%% otherwise
|
||
|
|
%
|
||
|
|
% For (A -> B ; otherwise -> C)
|
||
|
|
|
||
|
|
% otherwise.
|
||
|
|
|
||
|
|
|
||
|
|
/********************************
|
||
|
|
* ARITHMETIC *
|
||
|
|
*********************************/
|
||
|
|
|
||
|
|
%% abs(+Number, -Absolute)
|
||
|
|
% Unify `Absolute' with the absolute value of `Number'.
|
||
|
|
|
||
|
|
abs(Number, Absolute) :-
|
||
|
|
Absolute is abs(Number).
|
||
|
|
|
||
|
|
%% sin(+Angle, -Sine) is det.
|
||
|
|
%% cos(+Angle, -Cosine) is det.
|
||
|
|
%% tan(+Angle, -Tangent) is det.
|
||
|
|
%% log(+X, -NatLog) is det.
|
||
|
|
%% log10(+X, -Log) is det.
|
||
|
|
%
|
||
|
|
% Math library predicates. SWI-Prolog (and ISO) support these as
|
||
|
|
% functions under is/2, etc.
|
||
|
|
|
||
|
|
sin(A, V) :- V is sin(A).
|
||
|
|
cos(A, V) :- V is cos(A).
|
||
|
|
tan(A, V) :- V is tan(A).
|
||
|
|
log(A, V) :- V is log(A).
|
||
|
|
log10(X, V) :- V is log10(X).
|
||
|
|
pow(X,Y,V) :- V is X**Y.
|
||
|
|
ceiling(X, V) :- V is ceil(X).
|
||
|
|
floor(X, V) :- V is floor(X).
|
||
|
|
round(X, V) :- V is round(X).
|
||
|
|
sqrt(X, V) :- V is sqrt(X).
|
||
|
|
acos(X, V) :- V is acos(X).
|
||
|
|
asin(X, V) :- V is asin(X).
|
||
|
|
atan(X, V) :- V is atan(X).
|
||
|
|
atan2(Y, X, V) :- V is atan(Y, X).
|
||
|
|
sign(X, V) :- V is sign(X).
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* TERM MANIPULATION *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% genarg(?Index, +Term, ?Arg) is nondet.
|
||
|
|
%
|
||
|
|
% Generalised version of ISO arg/3. SWI-Prolog's arg/3 is already
|
||
|
|
% genarg/3.
|
||
|
|
|
||
|
|
genarg(N, T, A) :- % SWI-Prolog arg/3 is generic
|
||
|
|
arg(N, T, A).
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* FLAGS *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% prolog_flag(?Flag, ?Value) is nondet.
|
||
|
|
%
|
||
|
|
% Same as ISO current_prolog_flag/2. Maps =version=.
|
||
|
|
%
|
||
|
|
% @bug Should map relevant Quintus flag identifiers.
|
||
|
|
|
||
|
|
% prolog_flag(version, Version) :- !,
|
||
|
|
% current_prolog_flag(version_data, swi(Major, Minor, Patch, _)),
|
||
|
|
% current_prolog_flag(arch, Arch),
|
||
|
|
% current_prolog_flag(compiled_at, Compiled),
|
||
|
|
% atomic_list_concat(['SWI-Prolog ',
|
||
|
|
% Major, '.', Minor, '.', Patch,
|
||
|
|
% ' (', Arch, '): ', Compiled], Version).
|
||
|
|
% prolog_flag(Flag, Value) :-
|
||
|
|
% current_prolog_flag(Flag, Value).
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* STATISTICS *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
% Here used to be a definition of Quintus statistics/2 in traditional
|
||
|
|
% SWI-Prolog statistics/2. The current built-in emulates Quintus
|
||
|
|
% almost completely.
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* DATE/TIME *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% date(-Date) is det.
|
||
|
|
%
|
||
|
|
% Get current date as date(Y,M,D)
|
||
|
|
|
||
|
|
date(Date) :-
|
||
|
|
get_time(T),
|
||
|
|
stamp_date_time(T, DaTime, local),
|
||
|
|
date_time_value(date, DaTime, Date).
|
||
|
|
|
||
|
|
|
||
|
|
/********************************
|
||
|
|
* STYLE CHECK *
|
||
|
|
*********************************/
|
||
|
|
|
||
|
|
%% no_style_check(Style) is det.
|
||
|
|
%
|
||
|
|
% Same as SWI-Prolog =|style_check(-Style)|=. The Quintus option
|
||
|
|
% =single_var= is mapped to =singleton=.
|
||
|
|
%
|
||
|
|
% @see style_check/1.
|
||
|
|
|
||
|
|
q_style_option(single_var, singleton) :- !.
|
||
|
|
q_style_option(Option, Option).
|
||
|
|
|
||
|
|
% no_style_check(QOption) :-
|
||
|
|
% q_style_option(QOption, SWIOption),
|
||
|
|
% style_check(-SWIOption).
|
||
|
|
|
||
|
|
|
||
|
|
/********************************
|
||
|
|
* DIRECTIVES *
|
||
|
|
*********************************/
|
||
|
|
|
||
|
|
% :- op(1150, fx, [(mode), (public)]).
|
||
|
|
|
||
|
|
% mode(_).
|
||
|
|
% public(_).
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* TYPES *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% simple(@Term) is semidet.
|
||
|
|
%
|
||
|
|
% Term is atomic or a variable.
|
||
|
|
|
||
|
|
% simple(X) :-
|
||
|
|
% ( atomic(X)
|
||
|
|
% -> true
|
||
|
|
% ; var(X)
|
||
|
|
% ).
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* STREAMS *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% current_stream(?Object, ?Mode, ?Stream)
|
||
|
|
%
|
||
|
|
% SICStus/Quintus and backward compatible predicate. New code should
|
||
|
|
% be using the ISO compatible stream_property/2.
|
||
|
|
|
||
|
|
% current_stream(Object, Mode, Stream) :-
|
||
|
|
% stream_property(Stream, mode(FullMode)),
|
||
|
|
% stream_mode(FullMode, Mode),
|
||
|
|
% ( stream_property(Stream, file_name(Object0))
|
||
|
|
% -> true
|
||
|
|
% ; stream_property(Stream, file_no(Object0))
|
||
|
|
% -> true
|
||
|
|
% ; Object0 = []
|
||
|
|
% ),
|
||
|
|
% Object = Object0.
|
||
|
|
|
||
|
|
% stream_mode(read, read).
|
||
|
|
% stream_mode(write, write).
|
||
|
|
% stream_mode(append, write).
|
||
|
|
% stream_mode(update, write).
|
||
|
|
|
||
|
|
% %% stream_position(+Stream, -Old, +New)
|
||
|
|
|
||
|
|
% stream_position(Stream, Old, New) :-
|
||
|
|
% stream_property(Stream, position(Old)),
|
||
|
|
% set_stream_position(Stream, New).
|
||
|
|
|
||
|
|
|
||
|
|
%% skip_line is det.
|
||
|
|
%% skip_line(Stream) is det.
|
||
|
|
%
|
||
|
|
% Skip the rest of the current line (on Stream). Same as
|
||
|
|
% =|skip(0'\n)|=.
|
||
|
|
|
||
|
|
skip_line :-
|
||
|
|
skip(10).
|
||
|
|
skip_line(Stream) :-
|
||
|
|
skip(Stream, 10).
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* COMPILATION *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% compile(+Files) is det.
|
||
|
|
%
|
||
|
|
% Compile files. SWI-Prolog doesn't distinguish between
|
||
|
|
% compilation and consult.
|
||
|
|
%
|
||
|
|
% @see load_files/2.
|
||
|
|
|
||
|
|
% :- meta_predicate
|
||
|
|
% compile(:).
|
||
|
|
|
||
|
|
% compile(Files) :-
|
||
|
|
% consult(Files).
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* ATOM-HANDLING *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% atom_char(+Char, -Code) is det.
|
||
|
|
%% atom_char(-Char, +Code) is det.
|
||
|
|
%
|
||
|
|
% Same as ISO char_code/2.
|
||
|
|
|
||
|
|
atom_char(Char, Code) :-
|
||
|
|
char_code(Char, Code).
|
||
|
|
|
||
|
|
%% midstring(?ABC, ?B, ?AC) is nondet.
|
||
|
|
%% midstring(?ABC, ?B, ?AC, LenA) is nondet.
|
||
|
|
%% midstring(?ABC, ?B, ?AC, LenA, LenB) is nondet.
|
||
|
|
%% midstring(?ABC, ?B, ?AC, LenA, LenB, LenC) is nondet.
|
||
|
|
%
|
||
|
|
% Too difficult to explain. See the Quintus docs. As far as I
|
||
|
|
% understand them the code below emulates this function just fine.
|
||
|
|
|
||
|
|
midstring(ABC, B, AC) :-
|
||
|
|
midstring(ABC, B, AC, _, _, _).
|
||
|
|
midstring(ABC, B, AC, LenA) :-
|
||
|
|
midstring(ABC, B, AC, LenA, _, _).
|
||
|
|
midstring(ABC, B, AC, LenA, LenB) :-
|
||
|
|
midstring(ABC, B, AC, LenA, LenB, _).
|
||
|
|
midstring(ABC, B, AC, LenA, LenB, LenC) :- % -ABC, +B, +AC
|
||
|
|
var(ABC), !,
|
||
|
|
atom_length(AC, LenAC),
|
||
|
|
( nonvar(LenA) ; nonvar(LenC)
|
||
|
|
-> plus(LenA, LenC, LenAC)
|
||
|
|
; true
|
||
|
|
),
|
||
|
|
sub_atom(AC, 0, LenA, _, A),
|
||
|
|
LenC is LenAC - LenA,
|
||
|
|
sub_atom(AC, _, LenC, 0, C),
|
||
|
|
atom_length(B, LenB),
|
||
|
|
atomic_list_concat([A,B,C], ABC).
|
||
|
|
midstring(ABC, B, AC, LenA, LenB, LenC) :-
|
||
|
|
sub_atom(ABC, LenA, LenB, LenC, B),
|
||
|
|
sub_atom(ABC, 0, LenA, _, A),
|
||
|
|
sub_atom(ABC, _, LenC, 0, C),
|
||
|
|
atom_concat(A, C, AC).
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* EXCEPTIONS *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
%% raise_exception(+Term)
|
||
|
|
%
|
||
|
|
% Quintus compatible exception handling
|
||
|
|
|
||
|
|
% raise_exception(Term) :-
|
||
|
|
% throw(Term).
|
||
|
|
|
||
|
|
%% on_exception(+Template, :Goal, :Recover)
|
||
|
|
|
||
|
|
:- meta_predicate
|
||
|
|
on_exception(+, 0, 0).
|
||
|
|
|
||
|
|
% on_exception(Except, Goal, Recover) :-
|
||
|
|
% catch(Goal, Except, Recover).
|