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Add OP_MemSet, for setting a memory cell to a string value. (CVS 4674)

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FossilOrigin-Name: 8bb9f970dd71cbf19e45774fc822aa1efebc1724
This commit is contained in:
danielk1977 2008-01-04 11:01:03 +00:00
parent 389a1adbd7
commit a29f18cdfc
4 changed files with 27 additions and 14 deletions
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16
manifest
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@ -1,5 +1,5 @@
C Change\sthe\ssqlite3ExprCode()\sfunction\sso\sthat\scallers\scan\srequest\sthat\nthe\sresult\sof\sthe\sexpression\sbe\sleft\son\sthe\sstack\sor\sin\sa\sregister.\s(CVS\s4673)
D 2008-01-03T23:44:53
C Add\sOP_MemSet,\sfor\ssetting\sa\smemory\scell\sto\sa\sstring\svalue.\s(CVS\s4674)
D 2008-01-04T11:01:04
F Makefile.arm-wince-mingw32ce-gcc ac5f7b2cef0cd850d6f755ba6ee4ab961b1fadf7
F Makefile.in 30789bf70614bad659351660d76b8e533f3340e9
F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@ -78,7 +78,7 @@ F sqlite.pc.in 30552343140c53304c2a658c080fbe810cd09ca2
F sqlite3.1 6be1ad09113570e1fc8dcaff84c9b0b337db5ffc
F sqlite3.def a96c1d0d39362b763d2ddba220a32da41a15c4b4
F sqlite3.pc.in abed4664817e1cd500f2276142c71958087c16bc
F src/alter.c f95b19dab6e77978da5d75675f5cde7c6d3df120
F src/alter.c b59c881008f5d32d3d6dde6cf49735467cf5aac4
F src/analyze.c addc8e75cc43eb7ad699cd3ffc0a9157b4bf9405
F src/attach.c 1c96631e56cdc51d3d70736bf61f1fe01c62cbea
F src/auth.c c8b2ab5c8bad4bd90ed7c294694f48269162c627
@ -168,7 +168,7 @@ F src/update.c a68e11e766376bf0fbec93d70c9389c4c502dd55
F src/utf.c ef4b7d83bae533b76c3e1bf635b113fdad86a736
F src/util.c 05f31144bbd3f1a24f4139ae029c42545cb72624
F src/vacuum.c 3f34f278809bf3eb0b62ec46ff779e9c385b28f0
F src/vdbe.c b49db80b9f38c333fd52c5c879f0ee04aaf18d27
F src/vdbe.c 09caf5753f176603ad4965d92c7ff32786c1cc2b
F src/vdbe.h bb128757b84280504a1243c450fd13ead248ede5
F src/vdbeInt.h 869d0f550354c1364dde1d3611d770bd1c767505
F src/vdbeapi.c f14174843bf4be2c9afdf2ef48b61e7c3ac62d7c
@ -603,7 +603,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
P e97e4578671d85b634072b8931cf55516bbd4ca8
R d8d82fb96584ffb5e00eae859b1e26e3
U drh
Z bf1918304aac944329f9dd57da302e51
P 61bfb77c4267b99ac8a8ef49355bcbc395a1a37b
R edd05b654f5ed425ebc77621c6cc523e
U danielk1977
Z 55c192a0d96eb126863103cbe98ffaaa

2
manifest.uuid
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@ -1 +1 @@
61bfb77c4267b99ac8a8ef49355bcbc395a1a37b
8bb9f970dd71cbf19e45774fc822aa1efebc1724

9
src/alter.c
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@ -12,7 +12,7 @@
** This file contains C code routines that used to generate VDBE code
** that implements the ALTER TABLE command.
**
** $Id: alter.c,v 1.37 2008/01/03 18:39:42 danielk1977 Exp $
** $Id: alter.c,v 1.38 2008/01/04 11:01:04 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@ -362,9 +362,10 @@ void sqlite3AlterRenameTable(
*/
#ifndef SQLITE_OMIT_VIRTUALTABLE
if( isVirtualRename ){
int i;
sqlite3VdbeAddOp4(v, OP_String8, 0, 0, 0, zName, 0);
i = sqlite3StackToReg(pParse, 1);
int i = ++pParse->nMem;
sqlite3_value *pVal = sqlite3ValueNew(db);
sqlite3ValueSetStr(pVal, -1, zName, SQLITE_UTF8, SQLITE_TRANSIENT);
sqlite3VdbeAddOp4(v, OP_MemSet, i, 0, 0, (char *)pVal, P4_MEM);
sqlite3VdbeAddOp4(v, OP_VRename, i, 0, 0,(const char*)pTab->pVtab, P4_VTAB);
}
#endif

14
src/vdbe.c
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@ -43,7 +43,7 @@
** in this file for details. If in doubt, do not deviate from existing
** commenting and indentation practices when changing or adding code.
**
** $Id: vdbe.c,v 1.673 2008/01/03 18:44:59 drh Exp $
** $Id: vdbe.c,v 1.674 2008/01/04 11:01:04 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@ -4766,6 +4766,18 @@ case OP_MemMove: {
break;
}
/* Opcode: MemSet P1 * * P4
**
** The P4 should be set to contain a P4_MEM value. The value is copied
** to memory cell P1.
*/
case OP_MemSet: {
assert( pOp->p1>0 && pOp->p1<=p->nMem );
assert( pOp->p4type==P4_MEM );
rc = sqlite3VdbeMemCopy(&p->aMem[pOp->p1], pOp->p4.pMem);
break;
}
/* Opcode: AggStep P1 P2 P4
**
** Execute the step function for an aggregate. The