RObject *RObjectList::findObjects (const QStringList &path, RObjectSearchMap *matches, const QString &op) {
RK_TRACE (OBJECTS);
RK_ASSERT (op == "$");
if (path.value (1) == "::") {
RObject *environment = findPackage (path[0]);
if (!environment) return 0;
return environment->findObjects (path.mid (2), matches, "$");
} else if (path.value (1) == ":::") {
RObject *environment = findPackage (path[0]);
if (environment) environment = static_cast<REnvironmentObject*> (environment)->namespaceEnvironment ();
if (!environment) environment = orphan_namespaces->findOrphanNamespace (path[0]);
if (!environment) return 0;
return environment->findObjects (path.mid (2), matches, "$");
} else if (path.value (0) == ".GlobalEnv") {
if (path.length () > 1) return getGlobalEnv ()->findObjects (path.mid (2), matches, "$");
else if (matches) matches->insert (path.value (0), getGlobalEnv ()); // no return, here: At least one more match will be found in base
else return getGlobalEnv ();
}
// no namespace given. Search all environments for matches
RObject *found = getGlobalEnv ()->findObjects (path, matches, "$");
if (found && !matches) return found;
for (int i = 0; i < childmap.size (); ++i) {
found = childmap[i]->findObjects (path, matches, "$");
if (found && !matches) return found;
}
return 0;
}
Value LocalScope::getVar(VarNameRef name) const {
if (name == "_current") return table;
if (name == "_super") return parent.getVar("_current");
if (name == "_global") return getGlobalEnv().getVar("_current");
JSON::INode *nd = table->getVariable(name);
if (nd == 0) return parent.getVar(name);
else return nd;
}
void RObjectList::updateEnvironments (const QStringList &_env_names, bool force_globalenv_update) {
RK_TRACE (OBJECTS);
RObjectMap newchildmap;
QStringList env_names = _env_names;
if (!env_names.isEmpty ()) {
QString dummy = env_names.takeFirst ();
RK_ASSERT (dummy == ".GlobalEnv");
if (force_globalenv_update) {
// for now, we only update the .GlobalEnv. All others we assume to be static
getGlobalEnv ()->updateFromR (update_chain);
}
} else {
RK_ASSERT (!env_names.isEmpty ());
}
// find which items are new, and copy the old ones
for (int i = 0; i < env_names.count (); ++i) {
QString name = env_names[i];
RObject *obj = findChildByName (name);
if (obj && (i > 0) && (env_names.lastIndexOf (name, i-1) > -1)) { // duplicate environment names can happen (e.g. if a data.frame is attached multiple times)
obj = 0; // only copy the old item once
}
if (!obj) {
obj = createTopLevelEnvironment (name);
RKGlobals::tracker ()->beginAddObject (obj, this, i);
childmap.insert (i, obj);
RKGlobals::tracker ()->endAddObject (obj, this, i);
}
newchildmap.insert (i, obj);
}
// check which envs have been removed or changed position
for (int i = 0; i < childmap.size (); ++i) { // do *not* cache the childmap.size ()! We may change it in the loop.
RObject *obj = childmap[i];
int new_pos = newchildmap.indexOf (obj);
if (new_pos < 0) { // environment is gone
RK_DEBUG (OBJECTS, DL_INFO, "removing toplevel environment %s from list", obj->getShortName ().toLatin1 ().data ());
if (RKGlobals::tracker ()->removeObject (obj, 0, true)) --i;
else (newchildmap.insert (i, obj));
} else if (new_pos != i) {
// this call is rather expensive, all in all, but fortunately called very rarely
moveChild (obj, i, new_pos);
}
}
RK_DO (RK_ASSERT (childmap == newchildmap), OBJECTS, DL_DEBUG); // this is an expensive assert, hence wrapping it inside RK_DO
}
