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Overview
Comment: | Improved the header-comment documentation on sqlite3ExprCodeExprList(). No changes to code. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
5dc3ecb5f67968545fb35ceed61ad625 |
User & Date: | drh 2017-09-15 15:38:01.722 |
Context
2017-09-15
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17:40 | Remove an unnecessary parameter from selectInnerLoop(). (check-in: dd95887f82 user: drh tags: trunk) | |
15:38 | Improved the header-comment documentation on sqlite3ExprCodeExprList(). No changes to code. (check-in: 5dc3ecb5f6 user: drh tags: trunk) | |
15:17 | Optimization to the ExprList object to make it slightly smaller and faster. (check-in: 4da49a95c0 user: drh tags: trunk) | |
Changes
Changes to src/expr.c.
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4248 4249 4250 4251 4252 4253 4254 | exprToRegister(pExpr, iMem); } /* ** Generate code that pushes the value of every element of the given ** expression list into a sequence of registers beginning at target. ** | | > > > > | 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 | exprToRegister(pExpr, iMem); } /* ** Generate code that pushes the value of every element of the given ** expression list into a sequence of registers beginning at target. ** ** Return the number of elements evaluated. The number returned will ** usually be pList->nExpr but might be reduced if SQLITE_ECEL_OMITREF ** is defined. ** ** The SQLITE_ECEL_DUP flag prevents the arguments from being ** filled using OP_SCopy. OP_Copy must be used instead. ** ** The SQLITE_ECEL_FACTOR argument allows constant arguments to be ** factored out into initialization code. ** ** The SQLITE_ECEL_REF flag means that expressions in the list with ** ExprList.a[].u.x.iOrderByCol>0 have already been evaluated and stored ** in registers at srcReg, and so the value can be copied from there. ** If SQLITE_ECEL_OMITREF is also set, then the values with u.x.iOrderByCol>0 ** are simply omitted rather than being copied from srcReg. */ int sqlite3ExprCodeExprList( Parse *pParse, /* Parsing context */ ExprList *pList, /* The expression list to be coded */ int target, /* Where to write results */ int srcReg, /* Source registers if SQLITE_ECEL_REF */ u8 flags /* SQLITE_ECEL_* flags */ |
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