Use generics for providers API
Using generics for the providers API allows a type to be associated
with a ProviderKey, resulting in a type-safe API without that doesn't
require runtime type assertions by every caller.
Unfortunately, Go does not allow generic types in methods, only in
functions [1]. This prevents a type-safe API on ModuleContext, and
requires moving the API to be functions that take a ModuleContext as
a parameter.
This CL creates the new API, but doesn't convert all of the callers.
[1] https://go.googlesource.com/proposal/+/refs/heads/master/design/43651-type-parameters.md#no-parameterized-methods)
Bug: 316410648
Test: builds
Change-Id: I3e30d68b966b730efd968166a38a25cc144bd6de
diff --git a/android/makevars.go b/android/makevars.go
index 0800190..5a9fe7c 100644
--- a/android/makevars.go
+++ b/android/makevars.go
@@ -92,7 +92,8 @@
ModuleDir(module blueprint.Module) string
ModuleSubDir(module blueprint.Module) string
ModuleType(module blueprint.Module) string
- ModuleProvider(module blueprint.Module, key blueprint.ProviderKey) interface{}
+ ModuleProvider(module blueprint.Module, key blueprint.AnyProviderKey) any
+ moduleProvider(module blueprint.Module, key blueprint.AnyProviderKey) (any, bool)
BlueprintFile(module blueprint.Module) string
ModuleErrorf(module blueprint.Module, format string, args ...interface{})