//===========================================================================
bool copyRules(
Grammar & out,
Grammar const & src,
string_view rootname,
bool failIfExists
) {
auto root = src.element(rootname);
if (!root) {
logMsgError() << "Rule not found, " << rootname;
return false;
}
auto & rules = const_cast<set<Element> &>(out.rules());
auto ib = rules.insert(*root);
if (!ib.second) {
if (failIfExists) {
logMsgError() << "Rule already exists, " << rootname;
return false;
}
return true;
}
auto & elem = *ib.first;
if ((elem.flags & Element::fFunction)
&& (elem.flags & Element::fCharEvents)
) {
logMsgError() << "Rule with both Function and Char, " << elem.value;
return false;
}
if ((elem.flags & Element::fStartEvents) == Element::fStartEvents) {
logMsgError() << "Rule with both Start and Start+, " << elem.value;
return false;
}
if ((elem.flags & Element::fEndEvents) == Element::fEndEvents) {
logMsgError() << "Rule with both End and End+, " << elem.value;
return false;
}
if ((elem.flags & Element::fCharEvents) == Element::fCharEvents) {
logMsgError() << "Rule with both Char and Char+, " << elem.value;
return false;
}
return copyRequiredDeps(out, src, elem);
}
//===========================================================================
static void normalizeRule(Element & rule, Grammar & rules) {
rule.rule = rules.element(rule.value);
}
