Prepare for a type-safe OnceKey
Add an opaque OnceKey type and use it for all calls to Once in
build/soong. A future patch will convert the arguments to
Once* to OnceKey once users outside build/soong have been updated.
Test: onceper_test.go
Change-Id: Ifcb338e6e603e804e507203c9508d30ffb2df966
diff --git a/java/sdk.go b/java/sdk.go
index 988610f..0959be7 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -28,7 +28,7 @@
android.RegisterPreSingletonType("sdk", sdkSingletonFactory)
}
-const sdkSingletonKey = "sdkSingletonKey"
+var sdkSingletonKey = android.NewOnceKey("sdkSingletonKey")
type sdkContext interface {
// sdkVersion eturns the sdk_version property of the current module, or an empty string if it is not set.