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Overview
| Comment: | Reset pCur->eSkip on a MoveTo (CVS 922) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
d983accf4a702158f03742fb11959d0f |
| User & Date: | paul 2003-04-20 11:41:04 |
Context
|
2003-04-20
| ||
| 11:46 | Align config vars controlling in-memory DB with code (CVS 923) check-in: 921656db user: paul tags: trunk | |
| 11:41 | Reset pCur->eSkip on a MoveTo (CVS 922) check-in: d983accf user: paul tags: trunk | |
| 00:00 | Update comments. Remove unused field from the Index structure. (CVS 921) check-in: 7084e050 user: drh tags: trunk | |
Changes
Changes to src/btree_rb.c.
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** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree_rb.c,v 1.4 2003/04/18 22:52:39 drh Exp $ ** ** This file implements an in-core database using Red-Black balanced ** binary trees. ** ** It was contributed to SQLite by anonymous on 2003-Feb-04 23:24:49 UTC. */ #include "btree.h" ................................................................................ /* If (pCur->pNode == NULL), then we have failed to find a match. Set * pCur->pNode to pTmp, which is either NULL (if the tree is empty) or the * last node traversed in the search. In either case the relation ship * between pTmp and the searched for key is already stored in *pRes. pTmp is * either the successor or predecessor of the key we tried to move to. */ if( !pCur->pNode ) pCur->pNode = pTmp; return SQLITE_OK; } /* ** Delete the entry that the cursor is pointing to. ................................................................................ }else{ *pRes = 1; } pCur->eSkip = SKIP_NONE; return SQLITE_OK; } static int memBtreeNext(BtCursor* pCur, int *pRes) { if( pCur->pNode && pCur->eSkip != SKIP_NEXT ){ if( pCur->pNode->pRight ){ pCur->pNode = pCur->pNode->pRight; while( pCur->pNode->pLeft ) pCur->pNode = pCur->pNode->pLeft; |
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** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree_rb.c,v 1.5 2003/04/20 11:41:04 paul Exp $ ** ** This file implements an in-core database using Red-Black balanced ** binary trees. ** ** It was contributed to SQLite by anonymous on 2003-Feb-04 23:24:49 UTC. */ #include "btree.h" ................................................................................ /* If (pCur->pNode == NULL), then we have failed to find a match. Set * pCur->pNode to pTmp, which is either NULL (if the tree is empty) or the * last node traversed in the search. In either case the relation ship * between pTmp and the searched for key is already stored in *pRes. pTmp is * either the successor or predecessor of the key we tried to move to. */ if( !pCur->pNode ) pCur->pNode = pTmp; pCur->eSkip = SKIP_NONE; return SQLITE_OK; } /* ** Delete the entry that the cursor is pointing to. ................................................................................ }else{ *pRes = 1; } pCur->eSkip = SKIP_NONE; return SQLITE_OK; } /* ** Advance the cursor to the next entry in the database. If ** successful then set *pRes=0. If the cursor ** was already pointing to the last entry in the database before ** this routine was called, then set *pRes=1. */ static int memBtreeNext(BtCursor* pCur, int *pRes) { if( pCur->pNode && pCur->eSkip != SKIP_NEXT ){ if( pCur->pNode->pRight ){ pCur->pNode = pCur->pNode->pRight; while( pCur->pNode->pLeft ) pCur->pNode = pCur->pNode->pLeft; |