From 3ad89a27e907038761e728e332b1cf8f3a6bb7cd Mon Sep 17 00:00:00 2001
From: Krzysztof Tomecki <152964795+chris-4chain@users.noreply.github.com>
Date: Fri, 10 Jan 2025 14:30:26 +0100
Subject: [PATCH] feat(SPV-1337): no collect ancestors utils function

---
 engine/utils/collect_ancestors.go | 42 -------------------------------
 1 file changed, 42 deletions(-)
 delete mode 100644 engine/utils/collect_ancestors.go

diff --git a/engine/utils/collect_ancestors.go b/engine/utils/collect_ancestors.go
deleted file mode 100644
index db88a42ab..000000000
--- a/engine/utils/collect_ancestors.go
+++ /dev/null
@@ -1,42 +0,0 @@
-package utils
-
-import (
-	"iter"
-	"maps"
-
-	trx "github.com/bitcoin-sv/go-sdk/transaction"
-)
-
-// CollectAncestors Gets the ancestors (up to mined) of provided transaction with no duplicates and excluding itself
-func CollectAncestors(tx *trx.Transaction) iter.Seq[*trx.Transaction] {
-	stack := make([]*trx.Transaction, 0)
-
-	it := func(yield func(string, *trx.Transaction) bool) {
-		if tx.MerklePath != nil {
-			// empty result if provided transaction is already mined
-			return
-		}
-		stack = append(stack, tx)
-		for len(stack) > 0 {
-			t := stack[len(stack)-1]
-			stack = stack[:len(stack)-1]
-
-			for _, input := range t.Inputs {
-				if input.SourceTransaction == nil {
-					continue
-				}
-
-				// collect source transaction of the input
-				yield(input.SourceTransaction.TxID().String(), input.SourceTransaction)
-
-				if input.SourceTransaction.MerklePath != nil {
-					// don't process source transaction if it's already mined
-					continue
-				}
-				stack = append(stack, input.SourceTransaction)
-			}
-		}
-	}
-
-	return maps.Values(maps.Collect(it))
-}