1 // Copyright 2019 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SANDBOXED_API_VAR_STRUCT_H_ 16 #define SANDBOXED_API_VAR_STRUCT_H_ 17 18 #include <cstddef> 19 #include <memory> 20 #include <string> 21 #include <utility> 22 23 #include "absl/base/macros.h" 24 #include "absl/strings/str_cat.h" 25 #include "sandboxed_api/var_ptr.h" 26 27 namespace sapi::v { 28 29 // Class representing a structure. 30 template <class T> 31 class Struct : public Var { 32 public: 33 // Forwarding constructor to initalize the struct_ field. 34 template <typename... Args> Struct(Args &&...args)35 explicit Struct(Args&&... args) : struct_(std::forward<Args>(args)...) { 36 SetLocal(&struct_); 37 } 38 GetSize()39 size_t GetSize() const final { return sizeof(T); } GetType()40 Type GetType() const final { return Type::kStruct; } GetTypeString()41 std::string GetTypeString() const final { return "Structure"; } ToString()42 std::string ToString() const final { 43 return absl::StrCat("Structure of size: ", sizeof(struct_)); 44 } 45 data()46 const T& data() const { return struct_; } mutable_data()47 T* mutable_data() { return &struct_; } 48 49 protected: 50 friend class LenVal; 51 52 T struct_; 53 }; 54 55 } // namespace sapi::v 56 57 #endif // SANDBOXED_API_VAR_STRUCT_H_ 58