database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-07 02:42:48 +03:00
Code Activity

Add the sqlite3_set_auxdata() and sqlite3_get_auxdata() APIs. (CVS 1532)

Browse Source 
FossilOrigin-Name: c2899b437366d879258ab4f6ae47868441010eca
This commit is contained in:
danielk1977
2004-06-05 10:22:17 +00:00
parent 2a02e33950
commit 682f68b020
9 changed files with 150 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
src/vdbe.c
View File

@@ -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 1.357 2004/06/04 06:22:02 danielk1977 Exp $
** $Id: vdbe.c,v 1.358 2004/06/05 10:22:18 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@@ -1218,11 +1218,18 @@ divide_by_zero:
break;
}
/* Opcode: Function P1 * P3
/* Opcode: Function P1 P2 P3
**
** Invoke a user function (P3 is a pointer to a Function structure that
** defines the function) with P1 string arguments taken from the stack.
** Pop all arguments from the stack and push back the result.
** defines the function) with P1 arguments taken from the stack. Pop all
** arguments from the stack and push back the result.
**
** P2 is a 32-bit bitmask indicating whether or not each argument to the
** function was determined to be constant at compile time. If the first
** argument was constant then bit 0 of P2 is set. This is used to determine
** whether meta data associated with a user function argument using the
** sqlite3_set_auxdata() API may be safely retained until the next
** invocation of this opcode.
**
** See also: AggFunc
*/
@@ -1243,7 +1250,15 @@ case OP_Function: {
storeTypeInfo(pArg, db->enc);
}
ctx.pFunc = (FuncDef*)pOp->p3;
assert( pOp->p3type==P3_FUNCDEF || pOp->p3type==P3_VDBEFUNC );
if( pOp->p3type==P3_FUNCDEF ){
ctx.pFunc = (FuncDef*)pOp->p3;
ctx.pVdbeFunc = 0;
}else{
ctx.pVdbeFunc = (VdbeFunc*)pOp->p3;
ctx.pFunc = ctx.pVdbeFunc->pFunc;
}
ctx.s.flags = MEM_Null;
ctx.s.z = 0;
ctx.isError = 0;
@@ -1253,6 +1268,22 @@ case OP_Function: {
if( sqlite3SafetyOn(db) ) goto abort_due_to_misuse;
popStack(&pTos, n);
/* If any auxilary data functions have been called by this user function,
** immediately call the destructor for any non-static values.
*/
if( ctx.pVdbeFunc ){
int mask = pOp->p2;
for(i=0; i<n; i++){
struct AuxData *pAux = &ctx.pVdbeFunc->apAux[i];
if( (i>31 || !(mask&(1<<i))) && pAux->pAux ){
pAux->xDelete(pAux->pAux);
pAux->pAux = 0;
}
}
pOp->p3 = (char *)ctx.pVdbeFunc;
pOp->p3type = P3_VDBEFUNC;
}
/* Copy the result of the function to the top of the stack */
pTos++;
*pTos = ctx.s;