static ConstValue sliceKey(const ConstValue &key, natural groupLevel, const Json &json) {
if (key->isArray()) {
if (key.length() <= groupLevel) return key;
Container out = json.array();
for (natural i = 0; i < groupLevel; i++)
out.add(key[i]);
return out;
} else {
return key;
}
}
static bool canGroupKeys(const ConstValue &subj, const ConstValue &sliced) {
if (sliced == null) return false;
if (subj->isArray()) {
natural cnt = subj.length();
if (cnt >= sliced.length()) {
cnt = sliced.length();
} else {
return false;
}
for (natural i = 0; i < cnt; i++) {
if (compareJson(subj[i],sliced[i]) != cmpResultEqual) return false;
}
return true;
} else {
return compareJson(subj,sliced) == cmpResultEqual;
}
}
