void ClassScope::checkDerivation(AnalysisResultPtr ar, hphp_string_iset &seen) {
seen.insert(m_name);
hphp_string_iset bases;
for (int i = m_bases.size() - 1; i >= 0; i--) {
const string &base = m_bases[i];
if (seen.find(base) != seen.end() || bases.find(base) != bases.end()) {
Compiler::Error(
Compiler::InvalidDerivation,
m_stmt,
"The class hierarchy contains a circular reference involving " + base);
if (i == 0 && !m_parent.empty()) {
assert(base == m_parent);
m_parent.clear();
}
m_bases.erase(m_bases.begin() + i);
continue;
}
bases.insert(base);
ClassScopePtrVec parents = ar->findClasses(Util::toLower(base));
for (unsigned int j = 0; j < parents.size(); j++) {
parents[j]->checkDerivation(ar, seen);
}
}
seen.erase(m_name);
}
void ClassScope::checkDerivation(AnalysisResultPtr ar, hphp_string_iset &seen) {
seen.insert(m_scopeName);
hphp_string_iset bases;
for (int i = m_bases.size() - 1; i >= 0; i--) {
auto const& base = m_bases[i];
if (seen.find(base) != seen.end() || bases.find(base) != bases.end()) {
Compiler::Error(
Compiler::InvalidDerivation,
m_stmt,
"The class hierarchy contains a circular reference involving " + base);
if (i == 0 && !m_parent.empty()) {
assert(base == m_parent);
m_parent.clear();
}
m_bases.erase(m_bases.begin() + i);
continue;
}
bases.insert(base);
auto parents = ar->findClasses(base);
for (auto& parent : parents) {
parent->checkDerivation(ar, seen);
}
}
seen.erase(m_scopeName);
}