/** context sensitive completion
* take current line, give list of completions (both atoms and files)
* thanks to Jan for crafting a proper interface wrapping SWI-Prolog available facilities
*/
QString Completion::initialize(int promptPosition, QTextCursor c, QStringList &strings) {
QString rets;
SwiPrologEngine::in_thread _int;
try {
int p = c.position();
Q_ASSERT(p >= promptPosition);
c.setPosition(promptPosition, c.KeepAnchor);
QString left = c.selectedText();
if (left.length()) {
PlString Before(left.toStdWString().data());
c.setPosition(p);
c.movePosition(c.EndOfLine, c.KeepAnchor);
QString after = c.selectedText();
PlString After(after.toStdWString().data());
PlTerm Completions, Delete, word;
if (PlCall("prolog", "complete_input", PlTermv(Before, After, Delete, Completions)))
for (PlTail l(Completions); l.next(word); )
strings.append(t2w(word));
c.setPosition(p);
rets = t2w(Delete);
}
}
catch(PlException e) {
qDebug() << t2w(e);
}
catch(...) {
qDebug() << "...";
}
return rets;
}
/** initialize and cache all predicates with description
*/
bool Completion::helpidx() {
if (helpidx_status == untried) {
helpidx_status = missing;
SwiPrologEngine::in_thread _e;
try {
if ( PlCall("load_files(library(helpidx), [silent(true)])") &&
PlCall("current_module(help_index)"))
{
{ PlTerm Name, Arity, Descr, Start, Stop;
PlQuery q("help_index", "predicate", V(Name, Arity, Descr, Start, Stop));
while (q.next_solution()) {
long arity = Arity.type() == PL_INTEGER ? long(Arity) : -1;
QString name = t2w(Name);
t_pred_docs::iterator x = pred_docs.find(name);
if (x == pred_docs.end())
x = pred_docs.insert(name, t_decls());
x.value().append(qMakePair(int(arity), t2w(Descr)));
}
}
if (PlCall("load_files(library(console_input), [silent(true)])"))
if (PlCall("current_module(prolog_console_input)"))
helpidx_status = available;
}
/*
if (!PlCall("current_module(prolog_console_input)")) {
QString ci = "console_input.pl";
QFile f(QString(":/%1").arg(ci));
if (f.open(f.ReadOnly)) {
QTextStream s(&f);
if (!_e.named_load(ci, s.readAll()))
qDebug() << "can't load" << ci;
}
}
*/
}
catch(PlException e) {
qDebug() << CCP(e);
}
}
return helpidx_status == available && !pred_docs.isEmpty();
}
void Completion::initialize(QSet<QString> &strings, bool reload) {
Q_UNUSED(reload)
T PRED;
for (current_predicate cp(PRED); cp; ) {
QString p = t2w(PRED);
if (p[0].isLetter())
strings.insert(p);
}
qDebug() << "Completion::initialize loaded" << strings.count();
}
QVariant term2variant(PlTerm t) {
switch (t.type()) {
case PL_VARIABLE:
return QVariant();
case PL_INT:
case PL_INTEGER:
return QVariant(int(t));
case PL_FLOAT:
return double(t);
case PL_ATOM:
case PL_STRING:
return t2w(t);
default:
throw QObject::tr("term2variant: unknown type %1").arg(t.type());
}
}
/** issue a query filling the model storage
* this will change when I will learn how to call SWI-Prolog completion interface
*/
void Completion::initialize(QSet<QString> &strings, bool reload) {
/*static QSet<QString> preds;*/
Q_UNUSED(reload)
//static QMap<QString, QSet<QString>> cmods;
T Mod, Exp, PI;
for (module_property mp(Mod, exports(Exp)); mp; ) {
for (L exp(Exp); exp.next(PI); )
//preds.insert(t2w(exp));
strings.insert(t2w(PI));
}
/*
if (curr.isEmpty() || reload) {
curr.clear();
SwiPrologEngine::in_thread _int;
try {
PlTerm p,m,a,l,v;
PlQuery q("setof",
PlTermv(p,
quv(m,
quv(a,
join(PlCompound("current_predicate", mod(m, arith(p, a))),
neg(C("sub_atom", PlTermv(p, zero, one, _V, A("$"))))
))),
l));
if (q.next_solution())
for (PlTail x(l); x.next(v); )
curr << t2w(v);
PlTerm M, Ms;
if (PlCall("setof", PlTermv(M, PlCompound("current_module", M), Ms)))
for (PlTail x(Ms); x.next(M); )
curr << t2w(M);
}
catch(PlException e) {
qDebug() << t2w(e);
}
}
strings.unite(curr);
*/
}
/** polling loop til buffer ready
*/
ssize_t Swipl_IO::_read_(char *buf, size_t bufsize) {
qDebug() << "_read_" << CVP(target);
int thid = PL_thread_self();
// handle setup interthread and termination
for ( ; ; ) {
{ QMutexLocker lk(&sync);
if (target) {
if (!target->thids.contains(thid)) {
target->add_thread(thid);
int rc =
PL_thread_at_exit(eng_at_exit, this, FALSE);
qDebug() << "installed" << rc;
}
break;
}
}
if ( PL_handle_signals() < 0 )
return -1;
SwiPrologEngine::msleep(10);
}
if ( buffer.isEmpty() ) {
PL_write_prompt(TRUE);
emit user_prompt(thid, SwiPrologEngine::is_tty(this));
}
for ( ; ; ) {
{ QMutexLocker lk(&sync);
if (!query.isEmpty()) {
try {
int rc = PlCall(query.toStdWString().data());
qDebug() << "PlCall" << query << rc;
}
catch(PlException e) {
qDebug() << t2w(e);
}
query.clear();
}
uint n = buffer.length();
Q_ASSERT(bufsize >= n);
if (n > 0) {
uint l = bufsize < n ? bufsize : n;
memcpy(buf, buffer, l);
buffer.remove(0, l);
return l;
}
if (target->status == ConsoleEdit::eof) {
target->status = ConsoleEdit::running;
return 0;
}
}
if ( PL_handle_signals() < 0 )
return -1;
SwiPrologEngine::msleep(10);
}
}
int ToolbarConfig::current() {
return t2w(t_current);
}