sdir.h File Reference

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Macros
#define	ScanDirectionIsValid(direction)
#define	ScanDirectionIsBackward(direction)   ((bool) ((direction) == BackwardScanDirection))
#define	ScanDirectionIsNoMovement(direction)   ((bool) ((direction) == NoMovementScanDirection))
#define	ScanDirectionIsForward(direction)   ((bool) ((direction) == ForwardScanDirection))

Typedefs
typedef enum ScanDirection	ScanDirection

Enumerations
enum	ScanDirection { BackwardScanDirection = -1, NoMovementScanDirection = 0, ForwardScanDirection = 1 }

Macro Definition Documentation

#define ScanDirectionIsBackward

(

direction

)

((bool) ((direction) == BackwardScanDirection))

Definition at line 41 of file sdir.h.

Referenced by _bt_advance_array_keys(), _bt_check_rowcompare(), _bt_checkkeys(), _bt_endpoint(), _bt_first(), _bt_start_array_keys(), _hash_first(), build_index_pathkeys(), ExplainIndexScanDetails(), heapgettup(), heapgettup_pagemode(), IndexNext(), IndexNextWithReorder(), IndexOnlyNext(), and TidNext().

#define ScanDirectionIsForward

(

direction

)

((bool) ((direction) == ForwardScanDirection))

Definition at line 55 of file sdir.h.

Referenced by _bt_check_rowcompare(), _bt_checkkeys(), _bt_endpoint(), _bt_first(), _bt_initialize_more_data(), _bt_next(), _bt_readnextpage(), _bt_readpage(), _bt_steppage(), CteScanNext(), ExecAppend(), ExecLimit(), ExecMaterial(), ExecSort(), FunctionNext(), heapgettup(), heapgettup_pagemode(), IndexNext(), IndexNextWithReorder(), IndexOnlyNext(), NamedTuplestoreScanNext(), RunFromStore(), ValuesNext(), and WorkTableScanNext().

#define ScanDirectionIsNoMovement

(

direction

)

((bool) ((direction) == NoMovementScanDirection))

Definition at line 48 of file sdir.h.

Referenced by PortalRunSelect(), RunFromStore(), and standard_ExecutorRun().

#define ScanDirectionIsValid

(

direction

)

Value:

((bool) (BackwardScanDirection <= (direction) && \
             (direction) <= ForwardScanDirection))

Definition at line 33 of file sdir.h.

Typedef Documentation

typedef enum ScanDirection ScanDirection

Enumeration Type Documentation

enum ScanDirection

Enumerator
BackwardScanDirection
NoMovementScanDirection
ForwardScanDirection

Definition at line 22 of file sdir.h.

{
    BackwardScanDirection = -1,
    NoMovementScanDirection = 0,
    ForwardScanDirection = 1
} ScanDirection;