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Unified Diff: mojo/public/cpp/bindings/lib/serialization_util.h

Issue 2058633002: mojo::ArrayTraits: Add Support for Iterators (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Addressed nit Created 4 years, 6 months ago
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Index: mojo/public/cpp/bindings/lib/serialization_util.h
diff --git a/mojo/public/cpp/bindings/lib/serialization_util.h b/mojo/public/cpp/bindings/lib/serialization_util.h
index 9fc08b85228b1d2b40bd0c7f9a294ec4237a504b..a93781753c9582c0230f742a7578b9f49293ab1d 100644
--- a/mojo/public/cpp/bindings/lib/serialization_util.h
+++ b/mojo/public/cpp/bindings/lib/serialization_util.h
@@ -228,6 +228,37 @@ ReturnType CallWithContext(ReturnType (*f)(ParamType),
}
template <typename T, typename MaybeConstUserType>
+struct HasGetBeginMethod {
+ template <typename U>
+ static char Test(decltype(U::GetBegin(std::declval<MaybeConstUserType&>()))*);
+ template <typename U>
+ static int Test(...);
+ static const bool value = sizeof(Test<T>(0)) == sizeof(char);
+
+ private:
+ EnsureTypeIsComplete<T> check_t_;
+};
+
+template <
+ typename Traits,
+ typename MaybeConstUserType,
+ typename std::enable_if<
+ HasGetBeginMethod<Traits, MaybeConstUserType>::value>::type* = nullptr>
+decltype(Traits::GetBegin(std::declval<MaybeConstUserType&>()))
+CallGetBeginIfExists(MaybeConstUserType& input) {
+ return Traits::GetBegin(input);
+}
+
+template <
+ typename Traits,
+ typename MaybeConstUserType,
+ typename std::enable_if<
+ !HasGetBeginMethod<Traits, MaybeConstUserType>::value>::type* = nullptr>
+size_t CallGetBeginIfExists(MaybeConstUserType& input) {
+ return 0;
+}
+
+template <typename T, typename MaybeConstUserType>
struct HasGetDataMethod {
template <typename U>
static char Test(decltype(U::GetData(std::declval<MaybeConstUserType&>()))*);
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