Source code of Windows XP (NT5)
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#ifndef _OIDTREESCANNER_HPP
#define _OIDTREESCANNER_HPP
class Oid;
class OidTreeScanner
{
protected:
SIMCOidTree *m_pOidTree;
// DESCRIPTION:
// Adds list of nodes from lstChildren to the tail of m_recursionTrace,
// constructing at the same time the OID lexicographically order.
// the list received as parameter should not be modified;
// PARAMETERS:
// (in) list of nodes to add
void UpdateRecursionTrace(SIMCNodeList *pLstChildren, SIMCNodeList *pLstTrace);
// DESCRIPTION:
// Gets the first symbol from the symbol list of the node pOidNode
// PARAMETERS:
// (in) pOidNode whose symbol is to be returned
// (out) cszSymbol - pointer to the symbol (do not alter or free)
// RETURN VALUE:
// 0 on success, -1 on failure
int GetNodeSymbol(const SIMCOidTreeNode *pOidNode, const char * & cszSymbol);
// DESCRIPTION:
// Gets the complete OID information for the given pOidNode.
// It supplies both the numeric value and symbolic name for each
// component of the OID.
// PARAMETERS:
// (in) pOidNode - the node whose OID is to be found
// (out) oid - the Oid object who stores the data
// RETURN VALUE:
// 0 on success, -1 on failure
int GetNodeOid(const SIMCOidTreeNode *pOidNode, Oid &oid);
public:
// initializes the OidTreeScanner
OidTreeScanner();
// DESCRIPTION:
// scans lexicographically the oid tree;
// RETURN VALUE:
// 0 on success
// -1 on failure;
virtual int Scan();
// DESCRIPTION:
// "callback" function, called each time a
// tree node passes through the scan. The user
// should redefine this function in the derived
// object to perform the action desired.
// PARAMETERS:
// (in) Pointer to the current node in the tree.
// RETURN VALUE:
// 0 - the scanner should continue
// 1 - the scanner should abort.
virtual int OnScanNode(const SIMCOidTreeNode *pOidNode) = 0;
// DESCRIPTION:
// Fills the symbols of the built-in objects from the static table
// RETURN VALUE:
// 0 - on success, -1 on failure
int MergeBuiltIn();
// DESCRIPTION:
// initializes the m_pOidTree.
// PARAMETERS:
// (in) pointer to the SIMCOidTree to scan.
void SetOidTree(SIMCOidTree *pOidTree);
~OidTreeScanner();
};
#endif