1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_WTF_VECTOR_H_
6 #define MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_WTF_VECTOR_H_
7 
8 #include "mojo/public/cpp/bindings/array_traits.h"
9 #include "third_party/WebKit/Source/wtf/Vector.h"
10 
11 namespace mojo {
12 
13 template <typename U>
14 struct ArrayTraits<WTF::Vector<U>> {
15   using Element = U;
16 
17   static bool IsNull(const WTF::Vector<U>& input) {
18     // WTF::Vector<> is always converted to non-null mojom array.
19     return false;
20   }
21 
22   static void SetToNull(WTF::Vector<U>* output) {
23     // WTF::Vector<> doesn't support null state. Set it to empty instead.
24     output->clear();
25   }
26 
27   static size_t GetSize(const WTF::Vector<U>& input) { return input.size(); }
28 
29   static U* GetData(WTF::Vector<U>& input) { return input.data(); }
30 
31   static const U* GetData(const WTF::Vector<U>& input) { return input.data(); }
32 
33   static U& GetAt(WTF::Vector<U>& input, size_t index) { return input[index]; }
34 
35   static const U& GetAt(const WTF::Vector<U>& input, size_t index) {
36     return input[index];
37   }
38 
39   static bool Resize(WTF::Vector<U>& input, size_t size) {
40     input.resize(size);
41     return true;
42   }
43 };
44 
45 }  // namespace mojo
46 
47 #endif  // MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_WTF_VECTOR_H_
48