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Refactor the sqlite3BtreeCursorHint() interface for improved maintainability.

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FossilOrigin-Name: fc3fb5cd0d2c123a069e5b18b62bb1f708c8698a
This commit is contained in:
drh
2015-08-14 15:05:55 +00:00
parent fe66352d17
commit 0df57012da
6 changed files with 90 additions and 43 deletions
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6
src/wherecode.c
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@@ -592,7 +592,7 @@ static void whereLikeOptimizationStringFixup(
/*
** This function is called on every node of an expression tree used as an
** argument to the OP_CursorHint instruction. If the node is a TK_COLUMN
** that accesses any cursor other than (pWalker->u.i), do the following:
** that accesses any cursor other than (pWalker->u.n), do the following:
**
** 1) allocate a register and code an OP_Column instruction to read
** the specified column into the new register, and
@@ -638,12 +638,10 @@ static void codeCursorHint(
int iCur;
WhereClause *pWC;
WhereTerm *pTerm;
WhereLoop *pWLoop;
int i, j;
int i;
if( OptimizationDisabled(db, SQLITE_CursorHints) ) return;
pLevel = &pWInfo->a[iLevel];
pWLoop = pLevel->pWLoop;
iCur = pWInfo->pTabList->a[pLevel->iFrom].iCursor;
pWC = &pWInfo->sWC;
for(i=0; i<pWC->nTerm; i++){