chore: fixup

Signed-off-by: moul <[email protected]>

examples/gno.land/p/demo/avl/pager/pager.gno

@@ -38,8 +38,13 @@ func (w *Wrapper) IterateByOffset(offset int, count int, cb func(index interface
 		return false
 	}
 
-	// Use the tree's IterateByOffset with the full count
-	// (positive for forward, negative for reverse)
+	// Use ReverseIterateByOffset for negative count
+	if count < 0 {
+		return w.tree.ReverseIterateByOffset(offset, -count, func(key string, value interface{}) bool {
+			return cb(key, value)
+		})
+	}
+
 	return w.tree.IterateByOffset(offset, count, func(key string, value interface{}) bool {
 		return cb(key, value)
 	})

examples/gno.land/p/demo/avl/pager/z_filetest.gno

@@ -2,7 +2,7 @@ package main
 
 import (
 	"gno.land/p/demo/avl"
-	"gno.land/p/demo/avl/pager"
+	avlpager "gno.land/p/demo/avl/pager"
 	"gno.land/p/demo/seqid"
 	"gno.land/p/demo/ufmt"
 )
@@ -11,12 +11,12 @@ func main() {
 	// Create a new AVL tree and populate it with some key-value pairs.
 	var id seqid.ID
 	tree := avl.NewTree()
-	for i := 0; i < 42; i++ {
+	for i := 0; i < 41; i++ {
 		tree.Set(id.Next().String(), i)
 	}
 
 	// Create a new pager.
-	pager := pager.NewPager(tree, 7, false)
+	pager := avlpager.NewPager(tree, 7, false)
 
 	for pn := -1; pn < 8; pn++ {
 		page := pager.GetPage(pn)
@@ -28,6 +28,23 @@ func main() {
 		println(page.Picker())
 		println()
 	}
+
+	println("-------------")
+
+	// Create a new pager in reverse mode.
+	pager = avlpager.NewPager(tree, 7, true)
+
+	for pn := -1; pn < 8; pn++ {
+		page := pager.GetPage(pn)
+
+		println(ufmt.Sprintf("## Page %d of %d", page.PageNumber, page.TotalPages))
+		for idx, item := range page.Items {
+			println(ufmt.Sprintf("- idx=%d index=%s value=%d", idx, item.Index, item.Value))
+		}
+		println(page.Picker())
+		println()
+	}
+
 }
 
 // Output:
@@ -94,7 +111,75 @@ func main() {
 // - idx=3 index=0000017 value=38
 // - idx=4 index=0000018 value=39
 // - idx=5 index=0000019 value=40
-// - idx=6 index=000001a value=41
+// [1](?page=1) | … | [4](?page=4) | [5](?page=5) | **6**
+//
+// ## Page 7 of 6
+// [1](?page=1) | … | [5](?page=5) | [6](?page=6) | _7_
+//
+// -------------
+// ## Page 0 of 6
+// _0_ | [1](?page=1) | [2](?page=2) | … | [6](?page=6)
+//
+// ## Page 0 of 6
+// _0_ | [1](?page=1) | [2](?page=2) | … | [6](?page=6)
+//
+// ## Page 1 of 6
+// - idx=0 index=0000019 value=40
+// - idx=1 index=0000018 value=39
+// - idx=2 index=0000017 value=38
+// - idx=3 index=0000016 value=37
+// - idx=4 index=0000015 value=36
+// - idx=5 index=0000014 value=35
+// - idx=6 index=0000013 value=34
+// **1** | [2](?page=2) | [3](?page=3) | … | [6](?page=6)
+//
+// ## Page 2 of 6
+// - idx=0 index=0000012 value=33
+// - idx=1 index=0000011 value=32
+// - idx=2 index=0000010 value=31
+// - idx=3 index=000000z value=30
+// - idx=4 index=000000y value=29
+// - idx=5 index=000000x value=28
+// - idx=6 index=000000w value=27
+// [1](?page=1) | **2** | [3](?page=3) | [4](?page=4) | … | [6](?page=6)
+//
+// ## Page 3 of 6
+// - idx=0 index=000000v value=26
+// - idx=1 index=000000t value=25
+// - idx=2 index=000000s value=24
+// - idx=3 index=000000r value=23
+// - idx=4 index=000000q value=22
+// - idx=5 index=000000p value=21
+// - idx=6 index=000000n value=20
+// [1](?page=1) | [2](?page=2) | **3** | [4](?page=4) | [5](?page=5) | [6](?page=6)
+//
+// ## Page 4 of 6
+// - idx=0 index=000000m value=19
+// - idx=1 index=000000k value=18
+// - idx=2 index=000000j value=17
+// - idx=3 index=000000h value=16
+// - idx=4 index=000000g value=15
+// - idx=5 index=000000f value=14
+// - idx=6 index=000000e value=13
+// [1](?page=1) | [2](?page=2) | [3](?page=3) | **4** | [5](?page=5) | [6](?page=6)
+//
+// ## Page 5 of 6
+// - idx=0 index=000000d value=12
+// - idx=1 index=000000c value=11
+// - idx=2 index=000000b value=10
+// - idx=3 index=000000a value=9
+// - idx=4 index=0000009 value=8
+// - idx=5 index=0000008 value=7
+// - idx=6 index=0000007 value=6
+// [1](?page=1) | … | [3](?page=3) | [4](?page=4) | **5** | [6](?page=6)
+//
+// ## Page 6 of 6
+// - idx=0 index=0000006 value=5
+// - idx=1 index=0000005 value=4
+// - idx=2 index=0000004 value=3
+// - idx=3 index=0000003 value=2
+// - idx=4 index=0000002 value=1
+// - idx=5 index=0000001 value=0
 // [1](?page=1) | … | [4](?page=4) | [5](?page=5) | **6**
 //
 // ## Page 7 of 6