Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
Comment: | The valueFromFunction() routine is better able to handle OOM errors. Omit unreachable branches. |
---|---|
Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | stat4-function |
Files: | files | file ages | folders |
SHA1: |
8fb6bd9be59d6b04e922d7b246aaefd4 |
User & Date: | drh 2015-03-12 06:46:52.204 |
Context
2015-03-12
| ||
18:38 | If an error occurs in the compile-time evaluation of an application-defined function, then propagate back out the exact error code, not just the generic SQLITE_ERROR. (check-in: 93f42586cc user: drh tags: stat4-function) | |
06:46 | The valueFromFunction() routine is better able to handle OOM errors. Omit unreachable branches. (check-in: 8fb6bd9be5 user: drh tags: stat4-function) | |
2015-03-11
| ||
20:59 | Allow the default value for columns added using ALTER TABLE ADD COLUMN to be a function in existing schemas loaded from disk. But prevent this version of SQLite from being used to create such a column. (check-in: ff868e22ca user: dan tags: stat4-function) | |
Changes
Changes to src/func.c.
︙ | ︙ | |||
18 19 20 21 22 23 24 | #include <assert.h> #include "vdbeInt.h" /* ** Return the collating function associated with a function. */ static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){ | > > | | 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | #include <assert.h> #include "vdbeInt.h" /* ** Return the collating function associated with a function. */ static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){ VdbeOp *pOp; assert( context->pVdbe!=0 ); pOp = &context->pVdbe->aOp[context->iOp-1]; assert( pOp->opcode==OP_CollSeq ); assert( pOp->p4type==P4_COLLSEQ ); return pOp->p4.pColl; } /* ** Indicate that the accumulator load should be skipped on this |
︙ | ︙ |
Changes to src/vdbeapi.c.
︙ | ︙ | |||
629 630 631 632 633 634 635 | */ sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){ assert( p && p->pFunc ); return p->pOut->db; } /* | | > > > > < > > | > > | > > > | | < > | | 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 | */ sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){ assert( p && p->pFunc ); return p->pOut->db; } /* ** Return the current time for a statement. If the current time ** is requested more than once within the same run of a single prepared ** statement, the exact same time is returned for each invocation regardless ** of the amount of time that elapses between invocations. In other words, ** the time returned is always the time of the first call. */ sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){ int rc; sqlite3_int64 iTime = 0; #ifndef SQLITE_ENABLE_STAT3_OR_STAT4 sqlite3_int64 *piTime = &iTime; assert( p->pVdbe!=0 ); #else sqlite3_int64 *piTime = p->pVdbe!=0 ? &p->pVdbe->iCurrentTime : &iTime; if( *piTime==0 ) #endif { rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, piTime); if( rc ) *piTime = 0; } return *piTime; } /* ** The following is the implementation of an SQL function that always ** fails with an error message stating that the function is used in the ** wrong context. The sqlite3_overload_function() API might construct ** SQL function that use this routine so that the functions will exist |
︙ | ︙ | |||
709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 | ** Return the auxiliary data pointer, if any, for the iArg'th argument to ** the user-function defined by pCtx. */ void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){ AuxData *pAuxData; assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); if( pCtx->pVdbe==0 ) return 0; for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){ if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break; } return (pAuxData ? pAuxData->pAux : 0); } | > > > > | 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 | ** Return the auxiliary data pointer, if any, for the iArg'th argument to ** the user-function defined by pCtx. */ void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){ AuxData *pAuxData; assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); #if SQLITE_ENABLE_STAT3_OR_STAT4 if( pCtx->pVdbe==0 ) return 0; #else assert( pCtx->pVdbe!=0 ); #endif for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){ if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break; } return (pAuxData ? pAuxData->pAux : 0); } |
︙ | ︙ | |||
733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 | void (*xDelete)(void*) ){ AuxData *pAuxData; Vdbe *pVdbe = pCtx->pVdbe; assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); if( iArg<0 ) goto failed; if( pVdbe==0 ) goto failed; for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){ if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break; } if( pAuxData==0 ){ pAuxData = sqlite3DbMallocZero(pVdbe->db, sizeof(AuxData)); if( !pAuxData ) goto failed; | > > > > | 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 | void (*xDelete)(void*) ){ AuxData *pAuxData; Vdbe *pVdbe = pCtx->pVdbe; assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); if( iArg<0 ) goto failed; #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 if( pVdbe==0 ) goto failed; #else assert( pVdbe!=0 ); #endif for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){ if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break; } if( pAuxData==0 ){ pAuxData = sqlite3DbMallocZero(pVdbe->db, sizeof(AuxData)); if( !pAuxData ) goto failed; |
︙ | ︙ |
Changes to src/vdbemem.c.
︙ | ︙ | |||
1190 1191 1192 1193 1194 1195 1196 | apVal = (sqlite3_value**)sqlite3DbMallocZero(db, sizeof(apVal[0]) * nVal); if( apVal==0 ){ rc = SQLITE_NOMEM; goto value_from_function_out; } for(i=0; i<nVal; i++){ rc = sqlite3ValueFromExpr(db, pList->a[i].pExpr, enc, aff, &apVal[i]); | | < | 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 | apVal = (sqlite3_value**)sqlite3DbMallocZero(db, sizeof(apVal[0]) * nVal); if( apVal==0 ){ rc = SQLITE_NOMEM; goto value_from_function_out; } for(i=0; i<nVal; i++){ rc = sqlite3ValueFromExpr(db, pList->a[i].pExpr, enc, aff, &apVal[i]); if( apVal[i]==0 || rc!=SQLITE_OK ) goto value_from_function_out; } } pVal = valueNew(db, pCtx); if( pVal==0 ){ rc = SQLITE_NOMEM; goto value_from_function_out; |
︙ | ︙ | |||
1223 1224 1225 1226 1227 1228 1229 | } value_from_function_out: if( rc!=SQLITE_OK ){ if( pCtx==0 ) sqlite3ValueFree(pVal); pVal = 0; } | > | | | | > | 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 | } value_from_function_out: if( rc!=SQLITE_OK ){ if( pCtx==0 ) sqlite3ValueFree(pVal); pVal = 0; } if( apVal ){ for(i=0; i<nVal; i++){ sqlite3ValueFree(apVal[i]); } sqlite3DbFree(db, apVal); } *ppVal = pVal; return rc; } #else # define valueFromFunction(a,b,c,d,e,f) SQLITE_OK #endif /* defined(SQLITE_ENABLE_STAT3_OR_STAT4) */ |
︙ | ︙ |