Re: [eclipse-clp-users] set_flag(all_dynamic, on) in 6.0

From: Joachim Schimpf <jschimpf_at_...311...>
Date: Sun, 17 Jul 2011 12:42:13 +0200
Eloy Retamino wrote:
> Hello, I'd like your advice in the next error. I'm trying to compile an 
> interpreter of golog 
> (http://www.cs.toronto.edu/cogrobo/main/systems/index.html), it's 
> intented to be a language for programming agents and it's written for 
> eclipse prolog. The question is that when I compile it in eclipse 5.10 
> everything goes fine, but in 6.0 a receve the next compilation error:
> 
> unimplemented functionality in set_flag(all_dynamic, on)
> ERROR: gologinterpreter.pl:40:
>   Query exited (abort): :- set_flag(all_dynamic, on)
> 
> I've been looking around and it seems that predicate is not implemented 
> in 6.0, but I don't know what it's for and what happens if I supress it. 
> Could someone help me?

As far as I can tell from a brief look at the code, the all_dynamic
directive is used only because there are a few predicates with
non-consecutive clauses.

Remove these two old directives:
:- dynamic(proc/2).            /* Compiler directives. Be sure   */
:- set_flag(all_dynamic, on).  /* that you load this file first! */

and replace them with:
:- discontiguous(primitive_action/1).
:- discontiguous(proc/2).
:- discontiguous(poss/2).
:- discontiguous(holds/2).
:- discontiguous(restoreSitArg/3).


> 
> I'm also not sure about the best way of using this interpreter. It's 
> thinked for writting programs in this "dialect" based on situation 
> calculus and executing them on prolog. So, should I compile both the 
> interpreter and the program everytime I load a program written in golog? 
> I've tried to load it as a module, but eclipse tells me that there is no 
> module in the file. I haven't explore yet how it works the modules 
> structure, maybe they have to have an special syntaxis.

It is not designed for modules.  The way it is written, you should
always compile interpreter and program together.  A simple way to do
that is to put your own program into a separate file, and include
the interpreter at the start of that file, using

:- include(gologinterpreter).


The ECLiPSe 6.0 compiler will also generate a number of "Singleton variable"
warnings on this code - these are ok.  You can suppress them using

:- pragma(nowarnings).	% at the beginngin of gologinterpreter.pl


Cheers,
Joachim
Received on Sun Jul 17 2011 - 10:42:21 CEST

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