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#ifndef alias_registry_hh_INCLUDED
#define alias_registry_hh_INCLUDED
#include "safe_ptr.hh"
#include "string.hh"
#include "ranges.hh"
#include "hash_map.hh"
namespace Kakoune
{
class AliasRegistry : public SafeCountable
{
public:
AliasRegistry(AliasRegistry& parent) : SafeCountable{}, m_parent(&parent) {}
void reparent(AliasRegistry& parent) { m_parent = &parent; }
void add_alias(String alias, String command);
void remove_alias(StringView alias);
StringView operator[](StringView alias) const;
Vector<StringView> aliases_for(StringView command) const;
auto flatten_aliases() const
{
auto merge = [](auto&& first, const AliasMap& second) {
return concatenated(std::forward<decltype(first)>(first)
| filter([&second](auto& i) { return not second.contains(i.key); }),
second);
};
static const AliasMap empty;
auto& parent = m_parent ? m_parent->m_aliases : empty;
auto& grand_parent = (m_parent and m_parent->m_parent) ? m_parent->m_parent->m_aliases : empty;
return merge(merge(grand_parent, parent), m_aliases);
}
private:
friend class Scope;
AliasRegistry() = default;
SafePtr<AliasRegistry> m_parent;
using AliasMap = HashMap<String, String, MemoryDomain::Aliases>;
AliasMap m_aliases;
};
}
#endif // alias_registry_hh_INCLUDED
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