feat: Waku v2 bridge

Issue #12610

vendor/github.com/anacrolix/log/msgimpl.go

@@ -0,0 +1,33 @@
+package log
+
+import (
+	"runtime"
+
+	"github.com/anacrolix/missinggo/iter"
+)
+
+// The minimal interface required for the Msg helper/wrapper to operate on.
+type MsgImpl interface {
+	// Returns the message text. Allows for lazy evaluation/prefixing etc.
+	Text() string
+	// Sets the program counters in pc. Having it in the interface may allow us to cache/freeze them
+	// for serialization etc.
+	Callers(skip int, pc []uintptr) int
+	// Iterates over the values as added LIFO.
+	Values(callback iter.Callback)
+}
+
+// maybe implement finalizer to ensure msgs are sunk
+type rootMsgImpl struct {
+	text func() string
+}
+
+func (m rootMsgImpl) Text() string {
+	return m.text()
+}
+
+func (m rootMsgImpl) Callers(skip int, pc []uintptr) int {
+	return runtime.Callers(skip+2, pc)
+}
+
+func (m rootMsgImpl) Values(iter.Callback) {}