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Diffstat (limited to 'mojo/public/cpp/bindings/union_traits.h')
| -rw-r--r-- | mojo/public/cpp/bindings/union_traits.h | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/mojo/public/cpp/bindings/union_traits.h b/mojo/public/cpp/bindings/union_traits.h deleted file mode 100644 index 292ee58..0000000 --- a/mojo/public/cpp/bindings/union_traits.h +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2016 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#ifndef MOJO_PUBLIC_CPP_BINDINGS_UNION_TRAITS_H_ -#define MOJO_PUBLIC_CPP_BINDINGS_UNION_TRAITS_H_ - -namespace mojo { - -// This must be specialized for any type |T| to be serialized/deserialized as -// a mojom union. |DataViewType| is the corresponding data view type of the -// mojom union. For example, if the mojom union is example.Foo, |DataViewType| -// will be example::FooDataView, which can also be referred to by -// example::Foo::DataView (in chromium) and example::blink::Foo::DataView (in -// blink). -// -// Similar to StructTraits, each specialization of UnionTraits implements the -// following methods: -// 1. Getters for each field in the Mojom type. -// 2. Read() method. -// 3. [Optional] IsNull() and SetToNull(). -// 4. [Optional] SetUpContext() and TearDownContext(). -// Please see the documentation of StructTraits for details of these methods. -// -// Unlike StructTraits, there is one more method to implement: -// 5. A static GetTag() method indicating which field is the current active -// field for serialization: -// -// static DataViewType::Tag GetTag(const T& input); -// -// During serialization, only the field getter corresponding to this tag -// will be called. -// -template <typename DataViewType, typename T> -struct UnionTraits; - -} // namespace mojo - -#endif // MOJO_PUBLIC_CPP_BINDINGS_UNION_TRAITS_H_ |