/************************* * swi_list_length *************************/ int swi_list_length(term_t pl_list) { fid_t frame; predicate_t pr_length; term_t pl_args, pl_length; int length; frame = PL_open_foreign_frame(); pr_length = PL_predicate("length", 2, NULL); pl_args = PL_new_term_refs(2); pl_length = pl_args + 1; length = -1; if (!PL_unify(pl_args, pl_list) || !PL_call_predicate(NULL, PL_Q_NORMAL, pr_length, pl_args)) goto out; PL_get_integer(pl_length, &length); out: PL_discard_foreign_frame(frame); return length; }
static char *prolog_cerrar(modulo_t *modulo) { prolog_dato_t *prolog = (prolog_dato_t*)modulo->m_dato; PL_discard_foreign_frame(prolog->m_fid); PL_cleanup(0); free(prolog); free(modulo); return "cerrado"; }
static void call_prolog_goal(prolog_goal *g) { fid_t fid; static predicate_t pred = NULL; int rc; if ( !pred ) pred = PL_predicate("call", 1, "user"); if ( (fid = PL_open_foreign_frame()) ) { term_t t = PL_new_term_ref(); term_t vars; rc = PL_recorded(g->goal, t); PL_erase(g->goal); g->goal = 0; g->state = G_RUNNING; if ( rc ) { qid_t qid; int flags = PL_Q_NORMAL; if ( g->acknowledge ) { flags |= PL_Q_CATCH_EXCEPTION; vars = PL_new_term_ref(); if ( !PL_get_arg(2, t, vars) || /* Goal-Vars */ !PL_get_arg(1, t, t) ) { PL_warning("ERROR: in_pce_thread: bad goal-vars term"); } } else { vars = 0; } if ( (qid = PL_open_query(g->module, flags, pred, t)) ) { rc = PL_next_solution(qid); if ( rc ) { g->state = G_TRUE; if ( vars ) g->result = PL_record(vars); } else { term_t ex; if ( g->acknowledge && (ex=PL_exception(qid)) ) { g->result = PL_record(ex); g->state = G_ERROR; } else { g->state = G_FALSE; } } PL_cut_query(qid); } else PL_warning("ERROR: pce: out of global stack"); } PL_discard_foreign_frame(fid); } else PL_warning("ERROR: pce: out of global stack"); }
int query_loop(atom_t goal, int loop) { GET_LD int rc; int clear_stacks = (LD->query == NULL); do { fid_t fid; qid_t qid = 0; term_t except = 0; predicate_t p; if ( !resetProlog(clear_stacks) ) goto error; if ( !(fid = PL_open_foreign_frame()) ) goto error; p = PL_pred(PL_new_functor(goal, 0), MODULE_system); if ( (qid = PL_open_query(MODULE_system, PL_Q_NORMAL, p, 0)) ) { rc = PL_next_solution(qid); } else { error: except = exception_term; rc = FALSE; /* Won't get any better */ break; } if ( !rc && (except = PL_exception(qid)) ) { atom_t a; tracemode(FALSE, NULL); debugmode(DBG_OFF, NULL); setPrologFlagMask(PLFLAG_LASTCALL); if ( PL_get_atom(except, &a) && a == ATOM_aborted ) { #ifdef O_DEBUGGER callEventHook(PLEV_ABORT); #endif printMessage(ATOM_informational, PL_ATOM, ATOM_aborted); } } if ( qid ) PL_close_query(qid); if ( fid ) PL_discard_foreign_frame(fid); if ( !except ) break; } while(loop); return rc; }
static bool clearSourceAdmin(SourceFile sf) { GET_LD int rc = FALSE; fid_t fid = PL_open_foreign_frame(); term_t name = PL_new_term_ref(); static predicate_t pred = NULL; if ( !pred ) pred = PL_predicate("$clear_source_admin", 1, "system"); PL_put_atom(name, sf->name); rc = PL_call_predicate(MODULE_system, PL_Q_NORMAL, pred, name); PL_discard_foreign_frame(fid); return rc; }
int query_loop(atom_t goal, int loop) { GET_LD int rc; int clear_stacks = (LD->query == NULL); do { fid_t fid; qid_t qid = 0; term_t except = 0; predicate_t p; if ( !resetProlog(clear_stacks) ) goto error; if ( !(fid = PL_open_foreign_frame()) ) goto error; p = PL_pred(PL_new_functor(goal, 0), MODULE_system); if ( (qid = PL_open_query(MODULE_system, PL_Q_NORMAL, p, 0)) ) { rc = PL_next_solution(qid); } else { error: except = exception_term; rc = -1; /* Won't get any better */ break; } if ( !rc && (except = PL_exception(qid)) ) { restore_after_exception(except); rc = -1; } if ( qid ) PL_close_query(qid); if ( fid ) PL_discard_foreign_frame(fid); if ( !except ) break; } while(loop); return rc; }
void initpyswipl() { char *plargs[3]; term_t swipl_load; fid_t swipl_fid; /**********************************************************/ /* Initialize the prolog kernel. */ /* The kernel is embedded (linked in) so I am setting the */ /* the startup path to be the current directory. Also, */ /* I'm sending the -q flag to supress the startup banner. */ /**********************************************************/ plargs[0]="./"; plargs[1]="-q"; plargs[2]="-nosignals"; PL_initialise(3,plargs); /**********************************************************/ /* Load the pyrun predicate. */ /* The pyrun.pl file has to be in the current working */ /* directory. */ /**********************************************************/ swipl_fid=PL_open_foreign_frame(); swipl_load=PL_new_term_ref(); /**********************************************************/ /* Changed by Nathan Denny July 18, 2001 */ /* No longer necessary to include pyrun.pl */ /**********************************************************/ /*PL_chars_to_term("consult('pyrun.pl')", swipl_load);*/ PL_chars_to_term("assert(pyrun(GoalString,BindingList):-(atom_codes(A,GoalString),atom_to_term(A,Goal,BindingList),call(Goal))).", swipl_load); PL_call(swipl_load,NULL); PL_discard_foreign_frame(swipl_fid); /**********************************************************/ /* Call the Python module initializer. */ /**********************************************************/ (void) Py_InitModule("pyswipl",pyswiplMethods); }
static PyObject* pyswipl_run(PyObject* self_Py, PyObject* args_Py) { char* goalString; char* answer; int answerCount; PyObject* answerList_Py; PyObject* answerString_Py; PyObject* bindingList_Py; PyObject* binding_Py; term_t swipl_args; term_t swipl_goalCharList; term_t swipl_bindingList; term_t swipl_head; term_t swipl_list; predicate_t swipl_predicate; qid_t swipl_qid; fid_t swipl_fid; /**********************************************************/ /* The queryString_C should be a python string represting */ /* the query to be executed on the prolog system. */ /**********************************************************/ if(!PyArg_ParseTuple(args_Py, "s", &goalString)) return NULL; else { /**********************************************************/ /* Create a Python list to hold the lists of bindings. */ /**********************************************************/ //if ( answerList_Py != NULL ) // Py_DECREF(answerList_Py); answerList_Py=PyList_New(0); /**********************************************************/ /* Open a foreign frame and initialize the term refs. */ /**********************************************************/ swipl_fid=PL_open_foreign_frame(); swipl_head=PL_new_term_ref(); /* Used in unpacking the binding List */ swipl_args=PL_new_term_refs(2); /* The compound term for arguments to run/2 */ swipl_goalCharList=swipl_args; /* Alias for arg 1 */ swipl_bindingList=swipl_args+1; /* Alias for arg 2 */ /**********************************************************/ /* Pack the query string into the argument compund term. */ /**********************************************************/ PL_put_list_chars(swipl_goalCharList,goalString); /**********************************************************/ /* Generate a predicate to pyrun/2 */ /**********************************************************/ swipl_predicate=PL_predicate("pyrun",2,NULL); /**********************************************************/ /* Open the query, and iterate through the solutions. */ /**********************************************************/ swipl_qid=PL_open_query(NULL,PL_Q_NORMAL,swipl_predicate, swipl_args); while(PL_next_solution(swipl_qid)) { /**********************************************************/ /* Create a Python list to hold the bindings. */ /**********************************************************/ bindingList_Py=PyList_New(0); /**********************************************************/ /* Step through the bindings and add each to the list. */ /**********************************************************/ swipl_list=PL_copy_term_ref(swipl_bindingList); while(PL_get_list(swipl_list, swipl_head, swipl_list)) { PL_get_chars(swipl_head, &answer, CVT_ALL|CVT_WRITE|BUF_RING); answerString_Py = PyString_FromString(answer); PyList_Append(bindingList_Py, answerString_Py); Py_DECREF(answerString_Py); } /**********************************************************/ /* Add this binding list to the list of all solutions. */ /**********************************************************/ PyList_Append(answerList_Py, bindingList_Py); Py_DECREF(bindingList_Py); } /**********************************************************/ /* Free this foreign frame... */ /* Added by Nathan Denny, July 18, 2001. */ /* Fixes a bug with running out of global stack when */ /* asserting _lots_ of facts. */ /**********************************************************/ PL_close_query(swipl_qid); PL_discard_foreign_frame(swipl_fid); /**********************************************************/ /* Return the list of solutions. */ /**********************************************************/ return answerList_Py; } }
/************************* * libprolog_load_file *************************/ int libprolog_load_file(char *path, int extension) { char *loader = extension ? "load_foreign_library" : "consult"; predicate_t pr_loader; fid_t frame; qid_t qid; term_t pl_path; int success; /* * load the given file (native prolog or foreign library) * * Notes: * The prolog predicate consult/1 does not seem to fail or raise an * exception upon errors. It merely produces an error message and * tries to continue or gives up processing the input file. In either * case it succeeds (ie. the goal consult(path) is always proven in * the prolog sense). * * This default behaviour is not acceptable for us. As a library we * want to let our caller know whether loading was successful or not. * Otherwise it would be impossible to write even remotely reliable * applications using this library. * * To detect errors we have special prolog glue code that hooks into * SWI Prologs user:message_hook and lets us know about errors * (libprolog:mark_error) if loading is active (libprolog:loading). * Currently the glue code prints an error message but it would be * fairly easy to collect the errors here and let our caller print * them if needed. For the time being this glue code lives in policy.pl * but will eventually be separated out (to libprolog.pl ?). */ libprolog_clear_errors(); libprolog_load_start(); frame = PL_open_foreign_frame(); pr_loader = PL_predicate(loader, 1, NULL); pl_path = PL_new_term_ref(); PL_put_atom_chars(pl_path, path); qid = PL_open_query(NULL, NORMAL_QUERY_FLAGS, pr_loader, pl_path); success = PL_next_solution(qid); if (PL_exception(qid)) { #if 0 char **exception = collect_exception(qid, &exception); libprolog_dump_exception(exception); #endif success = FALSE; } PL_close_query(qid); PL_discard_foreign_frame(frame); libprolog_load_done(); if (libprolog_has_errors()) return FALSE; else return success; }
void parse_seq_op_ (EtalisExecNode* operatorNode,term_t t) { assert(operatorNode != NULL); fid_t fid = PL_open_foreign_frame(); /*get components of the operator*/ term_t _level_1 = PL_new_term_refs(2); term_t _left_event=_level_1; term_t _right_event=_level_1+1; atom_t _left_event_name,_right_event_name; int temp_arity,i=0; /* TODO check for embedded operators, if operator -> parse right function ; else get atomic events */ PL_get_arg(1,t,_left_event); PL_get_name_arity(_left_event,&_left_event_name,&temp_arity); char * tt = PL_atom_chars(_left_event_name); i=0; while(strcmp(CEP_LUT_[i].CEP_name,PL_atom_chars(_left_event_name)) != 0 && i<LUT_Size) i++; /* #CONT */ if(i != LUT_Size) /*The operator is found in the CEP_LUT_*/ /* create a temp event */ { EtalisEventNode* TempEvent = (EtalisEventNode*)calloc(1,sizeof(EtalisEventNode)); /* this temp event is the complex event of the embedded operation */ TempEvent->event.arity = 0; strcpy(TempEvent->event.name,"temp_"); /* TODO Temp Events */ /* Temp Events have no arguments */ TempEvent->parentNode = operatorNode; strcpy(TempEvent->parentNode->name,tt); TempEvent->is_temp = ETALIS_TRUE; operatorNode->leftChild = TempEvent; EtalisExecNode* NewNodeRule = (EtalisExecNode*)calloc(1,sizeof(EtalisExecNode)); /* binarization and allocation of the embedded operator */ TempEvent->childNode = NewNodeRule; NewNodeRule->parentEvent = TempEvent; TempEvent->trigger = _seq_win_cep_l; switch (CEP_LUT_[i].CEP_arity) { case 1: break; case 2: /* found embedded */ CEP_LUT_[i].parser_func(NewNodeRule,_left_event); break; default: printf("error compiling the rules\n"); } } else /* an atomic event has been found */ { operatorNode->leftChild = (EtalisEventNode*) calloc(1,sizeof(EtalisEventNode)); PL_get_name_arity(_left_event,&_left_event_name,(int *)&((operatorNode->leftChild)->event.arity)); strcpy(operatorNode->leftChild->event.name,PL_atom_chars(_left_event_name)); operatorNode->leftChild->childNode = NULL; operatorNode->leftChild->parentNode=operatorNode; operatorNode->leftChild->is_temp = ETALIS_FALSE; if (operatorNode->parentEvent->is_temp) strcat(operatorNode->parentEvent->event.name,operatorNode->leftChild->event.name); operatorNode->leftChild->trigger = _seq_win_cep_l; } PL_get_arg(2,t,_right_event); operatorNode->rightChild = (EtalisEventNode*) calloc(1,sizeof(EtalisEventNode)); PL_get_name_arity(_right_event,&_right_event_name,(int *)&(operatorNode->rightChild->event.arity)); strcpy(operatorNode->rightChild->event.name,PL_atom_chars(_right_event_name)); operatorNode->rightChild->childNode = NULL; operatorNode->rightChild->parentNode = operatorNode; operatorNode->rightChild->is_temp = ETALIS_FALSE; PL_discard_foreign_frame(fid); if (operatorNode->parentEvent->is_temp) { strcat(operatorNode->parentEvent->event.name,operatorNode->rightChild->event.name); operatorNode->rightChild->trigger = _seq_win_cep_l; } else /* event is latest event in the call list */ { operatorNode->rightChild->trigger = _seq_batch_r; } ; }
static HDDEDATA CALLBACK DdeCallback(UINT type, UINT fmt, HCONV hconv, HSZ hsz1, HSZ hsz2, HDDEDATA hData, DWORD dwData1, DWORD dwData2) { switch(type) { case XTYP_CONNECT: { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(3); predicate_t pred = PL_pred(FUNCTOR_dde_connect3, MODULE_dde); int rval; PL_put_atom( argv+0, hszToAtom(hsz2)); /* topic */ PL_put_atom( argv+1, hszToAtom(hsz1)); /* service */ PL_put_integer(argv+2, dwData2 ? 1 : 0); /* same instance */ rval = PL_call_predicate(MODULE_dde, TRUE, pred, argv); PL_discard_foreign_frame(cid); return (void *)rval; } case XTYP_CONNECT_CONFIRM: { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(3); predicate_t pred = PL_pred(FUNCTOR_dde_connect_confirm3, MODULE_dde); int plhandle; if ( (plhandle = allocServerHandle(hconv)) >= 0 ) { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(3); predicate_t pred = PL_pred(FUNCTOR_dde_connect_confirm3, MODULE_dde); PL_put_atom( argv+0, hszToAtom(hsz2)); /* topic */ PL_put_atom( argv+1, hszToAtom(hsz1)); /* service */ PL_put_integer(argv+2, plhandle); PL_call_predicate(MODULE_dde, TRUE, pred, argv); PL_discard_foreign_frame(cid); } return NULL; } case XTYP_DISCONNECT: { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(1); predicate_t pred = PL_pred(FUNCTOR_dde_disconnect1, MODULE_dde); int plhandle = findServerHandle(hconv); if ( plhandle >= 0 && plhandle < MAX_CONVERSATIONS ) server_handle[plhandle] = (HCONV)NULL; PL_put_integer(argv+0, plhandle); PL_call_predicate(MODULE_dde, TRUE, pred, argv); PL_discard_foreign_frame(cid); return NULL; } case XTYP_EXECUTE: { int plhandle = findServerHandle(hconv); HDDEDATA rval = DDE_FNOTPROCESSED; fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(3); predicate_t pred = PL_pred(FUNCTOR_dde_execute3, MODULE_dde); DEBUG(0, Sdprintf("Got XTYP_EXECUTE request\n")); PL_put_integer(argv+0, plhandle); PL_put_atom( argv+1, hszToAtom(hsz1)); unify_hdata( argv+2, hData); if ( PL_call_predicate(MODULE_dde, TRUE, pred, argv) ) rval = (void *) DDE_FACK; PL_discard_foreign_frame(cid); DdeFreeDataHandle(hData); return rval; } case XTYP_REQUEST: { HDDEDATA data = (HDDEDATA) NULL; if ( fmt == CF_TEXT ) { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(4); predicate_t pred = PL_pred(FUNCTOR_dde_request4, MODULE_dde); int plhandle = findServerHandle(hconv); PL_put_integer( argv+0, plhandle); PL_put_atom( argv+1, hszToAtom(hsz1)); /* topic */ PL_put_atom( argv+2, hszToAtom(hsz2)); /* item */ PL_put_variable(argv+3); if ( PL_call_predicate(MODULE_dde, TRUE, pred, argv) ) { char *s; if ( PL_get_chars(argv+3, &s, CVT_ALL) ) data = DdeCreateDataHandle(ddeInst, s, strlen(s)+1, 0, hsz2, CF_TEXT, 0); } PL_discard_foreign_frame(cid); } return data; } default: ; } return (HDDEDATA)NULL; }
static HDDEDATA CALLBACK DdeCallback(UINT type, UINT fmt, HCONV hconv, HSZ hsz1, HSZ hsz2, HDDEDATA hData, DWORD dwData1, DWORD dwData2) { GET_LD DWORD ddeInst = LD->os.dde_instance; switch(type) { case XTYP_CONNECT: { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(3); predicate_t pred = PL_pred(FUNCTOR_dde_connect3, MODULE_dde); int rval; if ( unify_hsz(ddeInst, argv+0, hsz2) && /* topic */ unify_hsz(ddeInst, argv+1, hsz1) && /* service */ PL_unify_integer(argv+2, dwData2 ? 1 : 0) ) /* same instance */ { rval = PL_call_predicate(MODULE_dde, TRUE, pred, argv); } else { rval = FALSE; } PL_discard_foreign_frame(cid); return (void *)(intptr_t)rval; } case XTYP_CONNECT_CONFIRM: { int plhandle; if ( (plhandle = allocServerHandle(hconv)) >= 0 ) { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(3); predicate_t pred = PL_pred(FUNCTOR_dde_connect_confirm3, MODULE_dde); if ( unify_hsz(ddeInst, argv+0, hsz2) && /* topic */ unify_hsz(ddeInst, argv+1, hsz1) && /* service */ PL_unify_integer(argv+2, plhandle) ) PL_call_predicate(MODULE_dde, TRUE, pred, argv); PL_discard_foreign_frame(cid); } return NULL; } case XTYP_DISCONNECT: { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(1); predicate_t pred = PL_pred(FUNCTOR_dde_disconnect1, MODULE_dde); int plhandle = findServerHandle(hconv); if ( plhandle >= 0 && plhandle < MAX_CONVERSATIONS ) server_handle[plhandle] = (HCONV)NULL; PL_put_integer(argv+0, plhandle); PL_call_predicate(MODULE_dde, TRUE, pred, argv); PL_discard_foreign_frame(cid); return NULL; } case XTYP_EXECUTE: { int plhandle = findServerHandle(hconv); HDDEDATA rval = DDE_FNOTPROCESSED; fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(3); predicate_t pred = PL_pred(FUNCTOR_dde_execute3, MODULE_dde); DEBUG(1, Sdprintf("Got XTYP_EXECUTE request\n")); PL_put_integer(argv+0, plhandle); unify_hsz(ddeInst, argv+1, hsz1); unify_hdata( argv+2, hData); if ( PL_call_predicate(MODULE_dde, TRUE, pred, argv) ) rval = (void *) DDE_FACK; PL_discard_foreign_frame(cid); DdeFreeDataHandle(hData); return rval; } case XTYP_REQUEST: { HDDEDATA data = (HDDEDATA) NULL; if ( fmt == CF_UNICODETEXT ) { fid_t cid = PL_open_foreign_frame(); term_t argv = PL_new_term_refs(4); predicate_t pred = PL_pred(FUNCTOR_dde_request4, MODULE_dde); int plhandle = findServerHandle(hconv); PL_put_integer( argv+0, plhandle); unify_hsz(ddeInst, argv+1, hsz1); /* topic */ unify_hsz(ddeInst, argv+2, hsz2); /* item */ if ( PL_call_predicate(MODULE_dde, TRUE, pred, argv) ) { wchar_t *s; size_t len; /* TBD: error handling */ if ( PL_get_wchars(argv+3, &len, &s, CVT_ALL) ) data = DdeCreateDataHandle(ddeInst, (unsigned char*) s, (DWORD)(len+1)*sizeof(wchar_t), 0, hsz2, CF_UNICODETEXT, 0); } PL_discard_foreign_frame(cid); } return data; } default: ; } return (HDDEDATA)NULL; }
static foreign_t current_alarms(term_t time, term_t goal, term_t id, term_t status, term_t matching) { Event ev; term_t next = PL_new_term_ref(); term_t g = PL_new_term_ref(); term_t tail = PL_copy_term_ref(matching); term_t head = PL_new_term_ref(); term_t av = PL_new_term_refs(4); pthread_t self = pthread_self(); LOCK(); ev = TheSchedule()->first; for(; ev; ev = ev->next) { atom_t s; double at; fid_t fid; if ( !pthread_equal(self, ev->thread_id) ) continue; fid = PL_open_foreign_frame(); if ( ev->flags & EV_DONE ) s = ATOM_done; else if ( ev == TheSchedule()->scheduled ) s = ATOM_next; else s = ATOM_scheduled; if ( !PL_unify_atom(status, s) ) goto nomatch; PL_recorded(ev->goal, g); if ( !PL_unify_term(goal, PL_FUNCTOR, FUNCTOR_module2, PL_ATOM, PL_module_name(ev->module), PL_TERM, g) ) goto nomatch; at = (double)ev->at.tv_sec + (double)ev->at.tv_usec / 1000000.0; if ( !PL_unify_float(time, at) ) goto nomatch; if ( !unify_timer(id, ev) ) goto nomatch; PL_discard_foreign_frame(fid); if ( !PL_put_float(av+0, at) || /* time */ !PL_recorded(ev->goal, av+1) || /* goal */ !PL_put_variable(av+2) || /* id */ !unify_timer(av+2, ev) || !PL_put_atom(av+3, s) || /* status */ !PL_cons_functor_v(next, FUNCTOR_alarm4, av) ) { PL_close_foreign_frame(fid); UNLOCK(); return FALSE; } if ( PL_unify_list(tail, head, tail) && PL_unify(head, next) ) { continue; } else { PL_close_foreign_frame(fid); UNLOCK(); return FALSE; } nomatch: PL_discard_foreign_frame(fid); } UNLOCK(); return PL_unify_nil(tail); }