PersistentStorageArray< TYPE, SIZE > Struct Template Reference

Class for persistent storage of data. More...

#include <newgrf_storage.h>

Inheritance diagram for PersistentStorageArray< TYPE, SIZE >:

Public Types
using	StorageType = std::array< TYPE, SIZE >

Public Member Functions
void	StoreValue (uint pos, int32_t value)
	Stores some value at a given position.
TYPE	GetValue (uint pos) const
	Gets the value from a given position.
void	ClearChanges () override
	Discard temporary changes.
Public Member Functions inherited from BasePersistentStorageArray
virtual	~BasePersistentStorageArray ()
	Remove references to use.

Data Fields
StorageType	storage {}
	Memory for the storage array.
std::unique_ptr< StorageType >	prev_storage {}
	Temporary memory to store previous state so it can be reverted, e.g. for command tests.
Data Fields inherited from BasePersistentStorageArray
uint32_t	grfid = 0
	GRFID associated to this persistent storage. A value of zero means "default".
GrfSpecFeature	feature = GSF_INVALID
	NOSAVE: Used to identify in the owner of the array in debug output.
TileIndex	tile = INVALID_TILE
	NOSAVE: Used to identify in the owner of the array in debug output.

Additional Inherited Members
Static Public Member Functions inherited from BasePersistentStorageArray
static void	SwitchMode (PersistentStorageMode mode, bool ignore_prev_mode=false)
	Clear temporary changes made since the last call to SwitchMode, and set whether subsequent changes shall be persistent or temporary.
Static Protected Member Functions inherited from BasePersistentStorageArray
static bool	AreChangesPersistent ()
	Check whether currently changes to the storage shall be persistent or temporary till the next call to ClearChanges().

Detailed Description

template<typename TYPE, uint SIZE>
struct PersistentStorageArray< TYPE, SIZE >

Class for persistent storage of data.

On ClearChanges that data is either reverted or saved.

Template Parameters

TYPE	the type of variable to store.
SIZE	the size of the array.

Definition at line 67 of file newgrf_storage.h.

Member Typedef Documentation

StorageType

template<typename TYPE , uint SIZE>

using PersistentStorageArray< TYPE, SIZE >::StorageType = std::array<TYPE, SIZE>

Definition at line 68 of file newgrf_storage.h.

Member Function Documentation

ClearChanges()

template<typename TYPE , uint SIZE>

void PersistentStorageArray< TYPE, SIZE >::ClearChanges ( )

inlineoverridevirtual

Discard temporary changes.

Implements BasePersistentStorageArray.

Definition at line 116 of file newgrf_storage.h.

References PersistentStorageArray< TYPE, SIZE >::prev_storage, and PersistentStorageArray< TYPE, SIZE >::storage.

GetValue()

template<typename TYPE , uint SIZE>

TYPE PersistentStorageArray< TYPE, SIZE >::GetValue ( uint  pos ) const

inline

Gets the value from a given position.

Parameters

pos	the position to get the data from

Returns

the data from that position

Definition at line 108 of file newgrf_storage.h.

References PersistentStorageArray< TYPE, SIZE >::storage.

Referenced by AirportScopeResolver::GetVariable(), and IndustriesScopeResolver::GetVariable().

StoreValue()

template<typename TYPE , uint SIZE>

void PersistentStorageArray< TYPE, SIZE >::StoreValue ( uint  pos, int32_t  value  )

inline

Stores some value at a given position.

If there is no backup of the data that backup is made and then we write the data.

Parameters

pos	the position to write at
value	the value to write

Definition at line 80 of file newgrf_storage.h.

References AddChangedPersistentStorage(), BasePersistentStorageArray::AreChangesPersistent(), PersistentStorageArray< TYPE, SIZE >::prev_storage, and PersistentStorageArray< TYPE, SIZE >::storage.

Referenced by AirportScopeResolver::StorePSA(), IndustriesScopeResolver::StorePSA(), and TownScopeResolver::StorePSA().

Field Documentation

prev_storage

template<typename TYPE , uint SIZE>

std::unique_ptr<StorageType> PersistentStorageArray< TYPE, SIZE >::prev_storage {}

Temporary memory to store previous state so it can be reverted, e.g. for command tests.

Definition at line 71 of file newgrf_storage.h.

Referenced by PersistentStorageArray< TYPE, SIZE >::ClearChanges(), and PersistentStorageArray< TYPE, SIZE >::StoreValue().

storage

template<typename TYPE , uint SIZE>

StorageType PersistentStorageArray< TYPE, SIZE >::storage {}

Memory for the storage array.

Definition at line 70 of file newgrf_storage.h.

Referenced by PersistentStorageArray< TYPE, SIZE >::ClearChanges(), NIHIndustry::GetPSA(), NIHAirport::GetPSA(), PersistentStorageArray< TYPE, SIZE >::GetValue(), INDYChunkHandler::Load(), and PersistentStorageArray< TYPE, SIZE >::StoreValue().

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The documentation for this struct was generated from the following file:

• src/newgrf_storage.h