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_STRING_TRAITS_STL_H_ 6 #define MOJO_PUBLIC_CPP_BINDINGS_STRING_TRAITS_STL_H_ 7 8 #include <string> 9 10 #include "mojo/public/cpp/bindings/string_traits.h" 11 12 namespace mojo { 13 14 template <> 15 struct StringTraits<std::string> { 16 static bool IsNull(const std::string& input) { 17 // std::string is always converted to non-null mojom string. 18 return false; 19 } 20 21 static void SetToNull(std::string* output) { 22 // std::string doesn't support null state. Set it to empty instead. 23 output->clear(); 24 } 25 26 static size_t GetSize(const std::string& input) { return input.size(); } 27 28 static const char* GetData(const std::string& input) { return input.data(); } 29 30 static bool Read(StringDataView input, std::string* output) { 31 output->assign(input.storage(), input.size()); 32 return true; 33 } 34 }; 35 36 } // namespace mojo 37 38 #endif // MOJO_PUBLIC_CPP_BINDINGS_STRING_TRAITS_STL_H_ 39
