corelib/include/ebcl/inline/HashTables.hh

/******************************************************************************/
/* HASH TABLES - INLINE CODE **************************************************/
/******************************************************************************/

#ifndef _H_EBCL_INLINE_HASHTABLES
#define _H_EBCL_INLINE_HASHTABLES
#include <ebcl/HashTables.hh>
namespace ebcl {


/*= T_DefaultKeyMatch ========================================================*/

template< typename K >
inline bool T_DefaultKeyMatch< K >::keysMatch( K const& a , K const& b )
{
	return a == b;
}


/*= T_KeyValueTable ==========================================================*/

template< typename K , typename V >
inline T_KeyValueTable< K , V >::T_KeyValueTable(
		uint32_t initialSize , uint32_t hashSize , uint32_t growth ,
		F_KeyMatch< K > match )
	: match_( match ) , index_( hashSize , initialSize , growth ) ,
		keys_( growth ) , values_( growth )
{ }

/*----------------------------------------------------------------------------*/

template< typename K , typename T >
void swap( T_KeyValueTable< K , T >& lhs , T_KeyValueTable< K , T >& rhs )
{
	using std::swap;
	swap( lhs.match_ ,	rhs.match_ );
	swap( lhs.index_ ,	rhs.index_ );
	swap( lhs.keys_ ,	rhs.keys_ );
	swap( lhs.values_ ,	rhs.values_ );
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
template<
	typename A , typename B ,
	T_EnableIfTypesMatch< K , A > ,
	T_EnableIfTypesMatch< V , B >
> inline bool T_KeyValueTable< K , V >::add(
		A&& k ,
		B&& v )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx != T_HashIndex::INVALID_INDEX ) {
		return false;
	}
	keys_.add( std::forward< A >( k ) );
	values_.add( std::forward< B >( v ) );
	index_.add( hash );
	return true;
}

template< typename K , typename V >
template< typename B , T_EnableIfTypesMatch< V , B > >
inline bool T_KeyValueTable< K , V >::update(
		K const& k ,
		B&& v )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return false;
	}
	values_[ idx ] = std::forward< B >( v );
	return true;
}

template< typename K , typename V >
template<
	typename A , typename B ,
	T_EnableIfTypesMatch< K , A > ,
	T_EnableIfTypesMatch< V , B >
> inline void T_KeyValueTable< K , V >::set(
		A&& k ,
		B&& v )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		keys_.add( std::forward< A >( k ) );
		values_.add( std::forward< B >( v ) );
		index_.add( hash );
	} else {
		values_[ idx ] = std::forward< B >( v );
	}
}

template< typename K , typename V >
inline bool T_KeyValueTable< K , V >::remove( K const& k )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return false;
	}
	keys_.removeSwap( idx );
	values_.removeSwap( idx );
	index_.remove( idx );
	return true;
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline void T_KeyValueTable< K , V >::clear( )
{
	values_.clear( );
	keys_.clear( );
	index_.clear( );
}

template< typename K , typename V >
inline void T_KeyValueTable< K , V >::free( )
{
	values_.free( );
	keys_.free( );
	index_.free( );
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline uint32_t T_KeyValueTable< K , V >::size( ) const noexcept
{
	return keys_.size( );
}

template< typename K , typename V >
T_Array< K > const& T_KeyValueTable< K , V >::keys( ) const noexcept
{
	return keys_;
}

template< typename K , typename V >
T_Array< V > const& T_KeyValueTable< K , V >::values( ) const noexcept
{
	return values_;
}

template< typename K , typename V >
T_Array< V >& T_KeyValueTable< K , V >::values( ) noexcept
{
	return values_;
}

template< typename K , typename V >
inline uint32_t T_KeyValueTable< K , V >::indexOf( K const& k ) const
{
	return find( k , ComputeHash( k ) );
}

template< typename K , typename V >
inline bool T_KeyValueTable< K , V >::contains( K const& k ) const
{
	const uint32_t hash = ComputeHash( k );
	return find( k , hash ) != T_HashIndex::INVALID_INDEX;
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline V const* T_KeyValueTable< K , V >::get( K const& k ) const
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return nullptr;
	}
	return &values_[ idx ];
}

template< typename K , typename V >
inline V* T_KeyValueTable< K , V >::get( K const& k )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return nullptr;
	}
	return &values_[ idx ];
}

template< typename K , typename V >
template< typename... ArgTypes >
V& T_KeyValueTable< K , V >::getOrCreate(
		K const& k ,
		ArgTypes&&... args )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx != T_HashIndex::INVALID_INDEX ) {
		return values_[ idx ];
	}

	index_.add( hash );
	keys_.add( k );
	return values_.addNew( std::forward< ArgTypes >( args ) ... );
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline V& T_KeyValueTable< K , V >::operator[] ( uint32_t index )
{
	return values_[ index ];
}

template< typename K , typename V >
inline V const& T_KeyValueTable< K , V >::operator[] ( uint32_t index ) const
{
	return values_[ index ];
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline uint32_t T_KeyValueTable< K , V >::find( K const& k , uint32_t hash ) const
{
	uint32_t idx = index_.first( hash );
	while ( idx != T_HashIndex::INVALID_INDEX ) {
		if ( match_( keys_[ idx ] , k ) ) {
			break;
		}
		idx = index_.next( idx );
	}
	return idx;
}


/*= T_ObjectTable ============================================================*/

template< typename K , typename V >
inline T_ObjectTable< K , V >::T_ObjectTable(
		T_ObjectTable< K , V >::F_GetKey keyGetter ,
		uint32_t initialSize , uint32_t hashSize , uint32_t growth ,
		T_ObjectTable< K , V >::F_Match match )
	: match_( match ) , keyGetter_( keyGetter ) ,
		index_( hashSize , initialSize , growth ) ,
		values_( growth )
{ }

/*----------------------------------------------------------------------------*/

template< typename K , typename T >
void swap( T_ObjectTable< K , T >& lhs , T_ObjectTable< K , T >& rhs )
{
	using std::swap;
	swap( lhs.keyGetter_ ,	rhs.keyGetter_ );
	swap( lhs.match_ ,	rhs.match_ );
	swap( lhs.index_ ,	rhs.index_ );
	swap( lhs.values_ ,	rhs.values_ );
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
template< typename A , T_EnableIfTypesMatch< V , A > >
inline bool T_ObjectTable< K , V >::add(
		A&& v )
{
	K k = keyGetter_( v );
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx != T_HashIndex::INVALID_INDEX ) {
		return false;
	}
	values_.add( std::forward< A >( v ) );
	index_.add( hash );
	return true;
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
template< typename A , T_EnableIfTypesMatch< V , A > >
inline bool T_ObjectTable< K , V >::update(
		A&& v )
{
	K k = keyGetter_( v );
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return false;
	}
	values_[ idx ] = std::forward< A >( v );
	return true;
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
template< typename A , T_EnableIfTypesMatch< V , A > >
inline void T_ObjectTable< K , V >::set(
		A&& v )
{
	K k = keyGetter_( v );
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		values_.add( std::forward< A >( v ) );
		index_.add( hash );
	} else {
		values_[ idx ] = std::forward< A >( v );
	}
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline bool T_ObjectTable< K , V >::remove( K const& k )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return false;
	}
	values_.removeSwap( idx );
	index_.remove( idx );
	return true;
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline void T_ObjectTable< K , V >::clear( )
{
	values_.clear( );
	index_.clear( );
}

template< typename K , typename V >
inline void T_ObjectTable< K , V >::free( )
{
	values_.free( );
	index_.free( );
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline uint32_t T_ObjectTable< K , V >::size( ) const
{
	return values_.size( );
}

template< typename K , typename V >
inline uint32_t T_ObjectTable< K , V >::indexOf( K const& k ) const
{
	return find( k , ComputeHash( k ) );
}

template< typename K , typename V >
inline bool T_ObjectTable< K , V >::contains( K const& k ) const
{
	const uint32_t hash = ComputeHash( k );
	return find( k , hash ) != T_HashIndex::INVALID_INDEX;
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline T_Array< K > T_ObjectTable< K , V >::keys( ) const noexcept
{
	const auto sz( size( ) );
	T_Array< K > k( sz ? sz : 1 );
	for ( uint32_t i = 0 ; i < sz ; i ++ ) {
		k.add( keyGetter_( values_[ i ] ) );
	}
	return k;
}

template< typename K , typename V >
inline T_Array< V > const& T_ObjectTable< K , V >::values( ) const noexcept
{
	return values_;
}

template< typename K , typename V >
inline T_Array< V >& T_ObjectTable< K , V >::values( ) noexcept
{
	return values_;
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline V const* T_ObjectTable< K , V >::get( K const& k ) const
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return nullptr;
	}
	return &values_[ idx ];
}

template< typename K , typename V >
inline V* T_ObjectTable< K , V >::get( K const& k )
{
	const uint32_t hash = ComputeHash( k );
	uint32_t idx = find( k , hash );
	if ( idx == T_HashIndex::INVALID_INDEX ) {
		return nullptr;
	}
	return &values_[ idx ];
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline V& T_ObjectTable< K , V >::operator[] ( uint32_t index )
{
	return values_[ index ];
}

template< typename K , typename V >
inline V const& T_ObjectTable< K , V >::operator[] ( uint32_t index ) const
{
	return values_[ index ];
}

/*----------------------------------------------------------------------------*/

template< typename K , typename V >
inline uint32_t T_ObjectTable< K , V >::find( K const& k , uint32_t hash ) const
{
	uint32_t idx = index_.first( hash );
	while ( idx != T_HashIndex::INVALID_INDEX ) {
		if ( match_( keyGetter_( values_[ idx ] ) , k ) ) {
			break;
		}
		idx = index_.next( idx );
	}
	return idx;
}


} // namespace
#endif // _H_EBCL_INLINE_HASHTABLES