1 files changed, 41 insertions, 0 deletions
diff --git a/src/vdbeaux.c b/src/vdbeaux.c
index 3db26b29e..d25b633dd 100644
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -3022,3 +3022,44 @@ void sqlite3ExpirePreparedStatements(sqlite3 *db){
 sqlite3 *sqlite3VdbeDb(Vdbe *v){
   return v->db;
 }
+
+/*
+** Return a pointer to an sqlite3_value structure containing the value bound
+** parameter iVar of VM v. Except, if the value is an SQL NULL, return 
+** 0 instead. Unless it is NULL, apply affinity aff (one of the SQLITE_AFF_*
+** constants) to the value before returning it.
+**
+** The returned value must be freed by the caller using sqlite3ValueFree().
+*/
+sqlite3_value *sqlite3VdbeGetValue(Vdbe *v, int iVar, u8 aff){
+  assert( iVar>0 );
+  if( v ){
+    Mem *pMem = &v->aVar[iVar-1];
+    if( 0==(pMem->flags & MEM_Null) ){
+      sqlite3_value *pRet = sqlite3ValueNew(v->db);
+      if( pRet ){
+        sqlite3VdbeMemCopy((Mem *)pRet, pMem);
+        sqlite3ValueApplyAffinity(pRet, aff, SQLITE_UTF8);
+        sqlite3VdbeMemStoreType((Mem *)pRet);
+      }
+      return pRet;
+    }
+  }
+  return 0;
+}
+
+/*
+** Configure SQL variable iVar so that binding a new value to it signals
+** to sqlite3_reoptimize() that re-preparing the statement may result
+** in a better query plan.
+*/
+void sqlite3VdbeSetVarmask(Vdbe *v, int iVar, int isExpire){
+  u32 *mask = (isExpire ? &v->expmask : &v->optmask);
+  assert( iVar>0 );
+  if( iVar>32 ){
+    *mask = 0xffffffff;
+  }else{
+    *mask |= ((u32)1 << (iVar-1));
+  }
+}
+