From aab789d15716460c36950ddb3b9f3b7a7c4c8089 Mon Sep 17 00:00:00 2001
From: Ilya Mikheev <54912776+JkLondon@users.noreply.github.com>
Date: Mon, 17 Jun 2024 16:20:42 +0400
Subject: [PATCH] New setval approach (#148)

* save

* better naming

* removed unused

---------

Co-authored-by: Ilya Miheev <ilya.miheev@lamoda.ru>
---
 mdbx/cursor.go | 54 ++++++++------------------------------------------
 1 file changed, 8 insertions(+), 46 deletions(-)

diff --git a/mdbx/cursor.go b/mdbx/cursor.go
index 4f10779..035738a 100644
--- a/mdbx/cursor.go
+++ b/mdbx/cursor.go
@@ -147,15 +147,10 @@ func (c *Cursor) DBI() DBI {
 //
 // See mdb_cursor_get.
 func (c *Cursor) Get(setkey, setval []byte, op uint) (key, val []byte, err error) {
-	switch {
-	case len(setkey) == 0 && len(setval) == 0:
-		err = c.getVal0(op)
-	case len(setkey) == 0:
-		err = c.getVal01(setval, op)
-	case len(setval) == 0:
-		err = c.getVal1(setkey, op)
-	default:
-		err = c.getVal2(setkey, setval, op)
+	if len(setkey) != 0 || len(setval) != 0 {
+		err = c.getVal(setkey, setval, op)
+	} else {
+		err = c.getValEmpty(op)
 	}
 	if err != nil {
 		c.txn.key = C.MDBX_val{}
@@ -184,53 +179,20 @@ func (c *Cursor) Get(setkey, setval []byte, op uint) (key, val []byte, err error
 	return key, val, nil
 }
 
-// getVal0 retrieves items from the database without using given key or value
+// getValEmpty retrieves items from the database without using given key or value
 // data for reference (Next, First, Last, etc).
 //
 // See mdb_cursor_get.
-func (c *Cursor) getVal0(op uint) error {
+func (c *Cursor) getValEmpty(op uint) error {
 	ret := C.mdbx_cursor_get(c._c, &c.txn.key, &c.txn.val, C.MDBX_cursor_op(op))
 	return operrno("mdbx_cursor_get", ret)
 }
 
-// getVal1 retrieves items from the database using key data for reference
-// (Set, SetRange, etc).
-//
-// See mdb_cursor_get.
-func (c *Cursor) getVal1(setkey []byte, op uint) error {
-	var k *C.char
-	if len(setkey) > 0 {
-		k = (*C.char)(unsafe.Pointer(&setkey[0]))
-	}
-	ret := C.mdbxgo_cursor_get1(
-		c._c,
-		k, C.size_t(len(setkey)),
-		&c.txn.key,
-		&c.txn.val,
-		C.MDBX_cursor_op(op),
-	)
-	return operrno("mdbx_cursor_get", ret)
-}
-func (c *Cursor) getVal01(setval []byte, op uint) error {
-	var v *C.char
-	if len(setval) > 0 {
-		v = (*C.char)(unsafe.Pointer(&setval[0]))
-	}
-	ret := C.mdbxgo_cursor_get01(
-		c._c,
-		v, C.size_t(len(setval)),
-		&c.txn.key,
-		&c.txn.val,
-		C.MDBX_cursor_op(op),
-	)
-	return operrno("mdbx_cursor_get", ret)
-}
-
-// getVal2 retrieves items from the database using key and value data for
+// getVal retrieves items from the database using key and value data for
 // reference (GetBoth, GetBothRange, etc).
 //
 // See mdb_cursor_get.
-func (c *Cursor) getVal2(setkey, setval []byte, op uint) error {
+func (c *Cursor) getVal(setkey, setval []byte, op uint) error {
 	var k, v *C.char
 	if len(setkey) > 0 {
 		k = (*C.char)(unsafe.Pointer(&setkey[0]))