1 | // Copyright 2013 The Flutter 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 LIB_TONIC_DART_CLASS_LIBRARY_H_ |
6 | #define LIB_TONIC_DART_CLASS_LIBRARY_H_ |
7 | |
8 | #include <memory> |
9 | #include <string> |
10 | #include <unordered_map> |
11 | |
12 | #include "third_party/dart/runtime/include/dart_api.h" |
13 | #include "tonic/dart_class_provider.h" |
14 | |
15 | namespace tonic { |
16 | struct DartWrapperInfo; |
17 | |
18 | class DartClassLibrary { |
19 | public: |
20 | explicit DartClassLibrary(); |
21 | ~DartClassLibrary(); |
22 | |
23 | void add_provider(const std::string& library_name, |
24 | std::unique_ptr<DartClassProvider> provider) { |
25 | providers_.insert(std::make_pair(library_name, std::move(provider))); |
26 | } |
27 | |
28 | Dart_PersistentHandle GetClass(const DartWrapperInfo& info); |
29 | Dart_PersistentHandle GetClass(const std::string& library_name, |
30 | const std::string& interface_name); |
31 | |
32 | private: |
33 | Dart_PersistentHandle GetAndCacheClass(const char* library_name, |
34 | const char* interface_name, |
35 | Dart_PersistentHandle* cache_slot); |
36 | |
37 | // TODO(abarth): Move this class somewhere more general. |
38 | // We should also use a more reasonable hash function, such as described in |
39 | // http://www.boost.org/doc/libs/1_35_0/doc/html/boost/hash_combine_id241013.html |
40 | struct PairHasher { |
41 | template <typename T, typename U> |
42 | std::size_t operator()(const std::pair<T, U>& pair) const { |
43 | return std::hash<T>()(pair.first) + 37 * std::hash<U>()(pair.second); |
44 | } |
45 | }; |
46 | |
47 | std::unordered_map<std::string, std::unique_ptr<DartClassProvider>> |
48 | providers_; |
49 | std::unordered_map<const DartWrapperInfo*, Dart_PersistentHandle> info_cache_; |
50 | std::unordered_map<std::pair<std::string, std::string>, |
51 | Dart_PersistentHandle, |
52 | PairHasher> |
53 | name_cache_; |
54 | |
55 | TONIC_DISALLOW_COPY_AND_ASSIGN(DartClassLibrary); |
56 | }; |
57 | |
58 | } // namespace tonic |
59 | |
60 | #endif // LIB_TONIC_DART_CLASS_LIBRARY_H_ |
61 | |