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Add APIs for binding pointers that can be used by app-defined functions.

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FossilOrigin-Name: d9f4a831ba957ead3890b36d0e33e30cfa4c79b7de6400e623b9746a0a5a02d0
This commit is contained in:
drh
2017-06-30 23:09:03 +00:00
parent fd76b71cac
commit 3a96a5d919
6 changed files with 75 additions and 10 deletions
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24
src/vdbeapi.c
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@@ -199,6 +199,14 @@ unsigned int sqlite3_value_subtype(sqlite3_value *pVal){
Mem *pMem = (Mem*)pVal;
return ((pMem->flags & MEM_Subtype) ? pMem->eSubtype : 0);
}
void *sqlite3_value_pointer(sqlite3_value *pVal){
Mem *p = (Mem*)pVal;
if( (p->flags & MEM_TypeMask)==(MEM_Null|MEM_Subtype) && p->eSubtype=='p' ){
return p->u.pPtr;
}else{
return 0;
}
}
const unsigned char *sqlite3_value_text(sqlite3_value *pVal){
return (const unsigned char *)sqlite3ValueText(pVal, SQLITE_UTF8);
}
@@ -377,6 +385,12 @@ void sqlite3_result_null(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
sqlite3VdbeMemSetNull(pCtx->pOut);
}
void sqlite3_result_pointer(sqlite3_context *pCtx, void *pPtr){
Mem *pOut = pCtx->pOut;
assert( sqlite3_mutex_held(pOut->db->mutex) );
sqlite3VdbeMemSetNull(pOut);
sqlite3VdbeMemSetPointer(pOut, pPtr);
}
void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubtype){
Mem *pOut = pCtx->pOut;
assert( sqlite3_mutex_held(pOut->db->mutex) );
@@ -1380,6 +1394,16 @@ int sqlite3_bind_null(sqlite3_stmt *pStmt, int i){
}
return rc;
}
int sqlite3_bind_pointer(sqlite3_stmt *pStmt, int i, void *pPtr){
int rc;
Vdbe *p = (Vdbe*)pStmt;
rc = vdbeUnbind(p, i);
if( rc==SQLITE_OK ){
sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr);
sqlite3_mutex_leave(p->db->mutex);
}
return rc;
}
int sqlite3_bind_text(
sqlite3_stmt *pStmt,
int i,