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#ifndef __BLI_STRING_MULTI_MAP_H__
#define __BLI_STRING_MULTI_MAP_H__
#include "BLI_string_map.h"
#include "BLI_string_ref.h"
#include "BLI_vector.h"
namespace BLI {
template<typename ValueT> class StringMultiMap {
private:
StringMap<Vector<ValueT>> m_map;
public:
StringMultiMap() = default;
~StringMultiMap() = default;
uint key_amount() const
{
return m_map.size();
}
uint value_amount(StringRef key) const
{
return m_map.lookup(key).size();
}
bool add(StringRef key, const ValueT &value)
{
if (m_map.contains(key)) {
m_map.lookup(key).append(value);
return false;
}
else {
m_map.add_new(key, Vector<ValueT>({value}));
return true;
}
}
void add_multiple(StringRef key, ArrayRef<ValueT> values)
{
if (m_map.contains(key)) {
m_map.lookup(key).extend(values);
}
else {
m_map.add_new(key, values);
}
}
void add_multiple(const StringMultiMap<ValueT> &other)
{
other.foreach_item(
[&](StringRefNull key, ArrayRef<ValueT> values) { this->add_multiple(key, values); });
}
ArrayRef<ValueT> lookup(StringRef key) const
{
return m_map.lookup(key);
}
ArrayRef<ValueT> lookup_default(StringRef key,
ArrayRef<ValueT> default_array = ArrayRef<ValueT>()) const
{
const Vector<ValueT> *values = m_map.lookup_ptr(key);
if (values == nullptr) {
return default_array;
}
else {
return *values;
}
}
template<typename FuncT> void foreach_item(const FuncT &func) const
{
m_map.foreach_item([&](StringRefNull key, ArrayRef<ValueT> vector) { func(key, vector); });
}
};
} // namespace BLI
#endif /* __BLI_STRING_MULTI_MAP_H__ */
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