internal/lru: Split

1 files changed, 23 insertions, 0 deletions

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),
+	}
+}