From fec8b64975f952e2fa5fa8478b09dced87f0fa7b Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Fri, 6 Mar 2026 04:43:03 +0800
Subject: internal/lru: Split

---
 internal/lru/new.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 internal/lru/new.go

(limited to 'internal/lru/new.go')

diff --git a/internal/lru/new.go b/internal/lru/new.go
new file mode 100644
index 00000000..f683416a
--- /dev/null
+++ b/internal/lru/new.go
@@ -0,0 +1,23 @@
+package lru
+
+import "container/list"
+
+// New creates a cache with a maximum total weight.
+//
+// New panics if maxWeight is negative or weightFn is nil.
+func New[K comparable, V any](maxWeight int64, weightFn WeightFunc[K, V], onEvict OnEvictFunc[K, V]) *Cache[K, V] {
+	if maxWeight < 0 {
+		panic("lru: negative max weight")
+	}
+
+	if weightFn == nil {
+		panic("lru: nil weight function")
+	}
+
+	return &Cache[K, V]{
+		maxWeight: maxWeight,
+		weightFn:  weightFn,
+		onEvict:   onEvict,
+		items:     make(map[K]*list.Element),
+	}
+}
-- 
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