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 dap_typeinfo_h
16#define dap_typeinfo_h
17
18#include <functional>
19#include <string>
20
21namespace dap {
22
23class any;
24class Deserializer;
25class Serializer;
26
27// The TypeInfo interface provides basic runtime type information about DAP
28// types. TypeInfo is used by the serialization system to encode and decode DAP
29// requests, responses, events and structs.
30struct TypeInfo {
31 virtual ~TypeInfo();
32 virtual std::string name() const = 0;
33 virtual size_t size() const = 0;
34 virtual size_t alignment() const = 0;
35 virtual void construct(void*) const = 0;
36 virtual void copyConstruct(void* dst, const void* src) const = 0;
37 virtual void destruct(void*) const = 0;
38 virtual bool deserialize(const Deserializer*, void*) const = 0;
39 virtual bool serialize(Serializer*, const void*) const = 0;
40
41 // create() allocates and constructs the TypeInfo of type T, registers the
42 // pointer for deletion on cppdap library termination, and returns the pointer
43 // to T.
44 template <typename T, typename... ARGS>
45 static T* create(ARGS&&... args) {
46 auto typeinfo = new T(std::forward<ARGS>(args)...);
47 deleteOnExit(typeinfo);
48 return typeinfo;
49 }
50
51 private:
52 // deleteOnExit() ensures that the TypeInfo is destructed and deleted on
53 // library termination.
54 static void deleteOnExit(TypeInfo*);
55};
56
57} // namespace dap
58
59#endif // dap_typeinfo_h
60