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Add the sqlite3_value_dup() and sqlite3_value_free() interfaces. Use

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these interfaces to enhance R-Tree to add the
sqlite3_rtree_query_info.apSqlParam field.

FossilOrigin-Name: a7ee40c4fc62843ac5b96ba47ca14a66e8cd6961
This commit is contained in:
drh
2015-05-20 21:28:32 +00:00
parent 7b12548906
commit 4f03f413bc
11 changed files with 155 additions and 46 deletions
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28
src/vdbeapi.c
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@@ -212,6 +212,34 @@ int sqlite3_value_type(sqlite3_value* pVal){
return aType[pVal->flags&MEM_AffMask];
}
/* Make a copy of an sqlite3_value object
*/
sqlite3_value *sqlite3_value_dup(const sqlite3_value *pOrig){
sqlite3_value *pNew;
if( pOrig==0 ) return 0;
pNew = sqlite3_malloc( sizeof(*pNew) );
if( pNew==0 ) return 0;
memset(pNew, 0, sizeof(*pNew));
memcpy(pNew, pOrig, MEMCELLSIZE);
pNew->flags &= ~MEM_Dyn;
pNew->db = 0;
if( pNew->flags&(MEM_Str|MEM_Blob) ){
if( 0==(pOrig->flags&MEM_Static) ){
pNew->flags |= MEM_Ephem;
sqlite3VdbeMemMakeWriteable(pNew);
}
}
return pNew;
}
/* Destroy an sqlite3_value object previously obtained from
** sqlite3_value_dup().
*/
void sqlite3_value_free(sqlite3_value *pOld){
sqlite3ValueFree(pOld);
}
/**************************** sqlite3_result_ *******************************
** The following routines are used by user-defined functions to specify
** the function result.