1 | /******************************************************************************* |
2 | Copyright (c) The Taichi Authors (2016- ). All Rights Reserved. |
3 | The use of this software is governed by the LICENSE file. |
4 | *******************************************************************************/ |
5 | |
6 | #pragma once |
7 | |
8 | #include "taichi/common/dict.h" |
9 | |
10 | #include <cstring> |
11 | #include <string> |
12 | #include <map> |
13 | #include <functional> |
14 | #include <memory> |
15 | #include <iostream> |
16 | |
17 | namespace taichi { |
18 | |
19 | template <typename T> |
20 | std::shared_ptr<T> create_instance(const std::string &alias); |
21 | |
22 | template <typename T> |
23 | std::shared_ptr<T> create_instance(const std::string &alias, |
24 | const Config &config); |
25 | |
26 | template <typename T> |
27 | std::unique_ptr<T> create_instance_unique(const std::string &alias); |
28 | |
29 | template <typename T> |
30 | std::unique_ptr<T> create_instance_unique(const std::string &alias, |
31 | const Config &config); |
32 | template <typename T> |
33 | std::unique_ptr<T> create_instance_unique_ctor(const std::string &alias, |
34 | const Config &config); |
35 | |
36 | template <typename T> |
37 | T *create_instance_raw(const std::string &alias); |
38 | |
39 | template <typename T> |
40 | T *create_instance_raw(const std::string &alias, const Config &config); |
41 | |
42 | template <typename T> |
43 | T *create_instance_placement(const std::string &alias, void *place); |
44 | |
45 | template <typename T> |
46 | T *create_instance_placement(const std::string &alias, |
47 | void *place, |
48 | const Config &config); |
49 | |
50 | template <typename T> |
51 | std::vector<std::string> get_implementation_names(); |
52 | |
53 | class Unit { |
54 | public: |
55 | Unit() { |
56 | } |
57 | |
58 | virtual void initialize(const Config &config) { |
59 | } |
60 | |
61 | virtual bool test() const { |
62 | return true; |
63 | } |
64 | |
65 | virtual std::string get_name() const { |
66 | TI_NOT_IMPLEMENTED; |
67 | return "" ; |
68 | } |
69 | |
70 | virtual std::string general_action(const Config &config) { |
71 | TI_NOT_IMPLEMENTED; |
72 | return "" ; |
73 | } |
74 | |
75 | virtual ~Unit() { |
76 | } |
77 | }; |
78 | |
79 | #define TI_IMPLEMENTATION_HOLDER_NAME(T) ImplementationHolder_##T |
80 | #define TI_IMPLEMENTATION_HOLDER_PTR(T) instance_ImplementationHolder_##T |
81 | |
82 | class ImplementationHolderBase { |
83 | public: |
84 | std::string name; |
85 | |
86 | virtual bool has(const std::string &alias) const = 0; |
87 | |
88 | virtual void remove(const std::string &alias) = 0; |
89 | |
90 | virtual std::vector<std::string> get_implementation_names() const = 0; |
91 | }; |
92 | |
93 | class InterfaceHolder { |
94 | public: |
95 | typedef std::function<void(void *)> RegistrationMethod; |
96 | std::map<std::string, RegistrationMethod> methods; |
97 | std::map<std::string, ImplementationHolderBase *> interfaces; |
98 | |
99 | void register_registration_method(const std::string &name, |
100 | const RegistrationMethod &method) { |
101 | methods[name] = method; |
102 | } |
103 | |
104 | void register_interface(const std::string &name, |
105 | ImplementationHolderBase *interface_) { |
106 | interfaces[name] = interface_; |
107 | } |
108 | |
109 | static InterfaceHolder *get_instance() { |
110 | static InterfaceHolder holder; |
111 | return &holder; |
112 | } |
113 | }; |
114 | |
115 | #define TI_INTERFACE(T) \ |
116 | extern void *get_implementation_holder_instance_##T(); \ |
117 | class TI_IMPLEMENTATION_HOLDER_NAME(T) final \ |
118 | : public ImplementationHolderBase { \ |
119 | public: \ |
120 | explicit TI_IMPLEMENTATION_HOLDER_NAME(T)(const std::string &name) { \ |
121 | this->name = name; \ |
122 | } \ |
123 | using FactoryMethod = std::function<std::shared_ptr<T>()>; \ |
124 | using FactoryUniqueMethod = std::function<std::unique_ptr<T>()>; \ |
125 | using FactoryUniqueCtorMethod = \ |
126 | std::function<std::unique_ptr<T>(const Dict &config)>; \ |
127 | using FactoryRawMethod = std::function<T *()>; \ |
128 | using FactoryPlacementMethod = std::function<T *(void *)>; \ |
129 | std::map<std::string, FactoryMethod> implementation_factories; \ |
130 | std::map<std::string, FactoryUniqueMethod> \ |
131 | implementation_unique_factories; \ |
132 | std::map<std::string, FactoryUniqueCtorMethod> \ |
133 | implementation_unique_ctor_factories; \ |
134 | std::map<std::string, FactoryRawMethod> implementation_raw_factories; \ |
135 | std::map<std::string, FactoryPlacementMethod> \ |
136 | implementation_placement_factories; \ |
137 | std::vector<std::string> get_implementation_names() const override { \ |
138 | std::vector<std::string> names; \ |
139 | for (auto &kv : implementation_factories) { \ |
140 | names.push_back(kv.first); \ |
141 | } \ |
142 | return names; \ |
143 | } \ |
144 | template <typename G> \ |
145 | void insert(const std::string &alias) { \ |
146 | implementation_factories.insert( \ |
147 | std::make_pair(alias, [&]() { return std::make_shared<G>(); })); \ |
148 | implementation_unique_factories.insert( \ |
149 | std::make_pair(alias, [&]() { return std::make_unique<G>(); })); \ |
150 | implementation_raw_factories.insert( \ |
151 | std::make_pair(alias, [&]() { return new G(); })); \ |
152 | implementation_placement_factories.insert(std::make_pair( \ |
153 | alias, [&](void *place) { return new (place) G(); })); \ |
154 | } \ |
155 | template <typename G> \ |
156 | void insert_new(const std::string &alias) { \ |
157 | /*with ctor*/ \ |
158 | implementation_factories.insert( \ |
159 | std::make_pair(alias, [&]() { return std::make_shared<G>(); })); \ |
160 | implementation_unique_factories.insert( \ |
161 | std::make_pair(alias, [&]() { return std::make_unique<G>(); })); \ |
162 | implementation_unique_ctor_factories.insert(std::make_pair( \ |
163 | alias, \ |
164 | [&](const Dict &config) { return std::make_unique<G>(config); })); \ |
165 | implementation_raw_factories.insert( \ |
166 | std::make_pair(alias, [&]() { return new G(); })); \ |
167 | implementation_placement_factories.insert(std::make_pair( \ |
168 | alias, [&](void *place) { return new (place) G(); })); \ |
169 | } \ |
170 | void insert(const std::string &alias, const FactoryMethod &f) { \ |
171 | implementation_factories.insert(std::make_pair(alias, f)); \ |
172 | } \ |
173 | bool has(const std::string &alias) const override { \ |
174 | return implementation_factories.find(alias) != \ |
175 | implementation_factories.end(); \ |
176 | } \ |
177 | void remove(const std::string &alias) override { \ |
178 | TI_ASSERT_INFO(has(alias), \ |
179 | std::string("Implementation ") + alias + " not found!"); \ |
180 | implementation_factories.erase(alias); \ |
181 | } \ |
182 | void update(const std::string &alias, const FactoryMethod &f) { \ |
183 | if (has(alias)) { \ |
184 | remove(alias); \ |
185 | } \ |
186 | insert(alias, f); \ |
187 | } \ |
188 | template <typename G> \ |
189 | void update(const std::string &alias) { \ |
190 | if (has(alias)) { \ |
191 | remove(alias); \ |
192 | } \ |
193 | insert<G>(alias); \ |
194 | } \ |
195 | std::shared_ptr<T> create(const std::string &alias) { \ |
196 | auto factory = implementation_factories.find(alias); \ |
197 | TI_ASSERT_INFO( \ |
198 | factory != implementation_factories.end(), \ |
199 | "Implementation [" + name + "::" + alias + "] not found!"); \ |
200 | return (factory->second)(); \ |
201 | } \ |
202 | std::unique_ptr<T> create_unique(const std::string &alias) { \ |
203 | auto factory = implementation_unique_factories.find(alias); \ |
204 | TI_ASSERT_INFO( \ |
205 | factory != implementation_unique_factories.end(), \ |
206 | "Implementation [" + name + "::" + alias + "] not found!"); \ |
207 | return (factory->second)(); \ |
208 | } \ |
209 | std::unique_ptr<T> create_unique_ctor(const std::string &alias, \ |
210 | const Dict &config) { \ |
211 | auto factory = implementation_unique_ctor_factories.find(alias); \ |
212 | TI_ASSERT_INFO( \ |
213 | factory != implementation_unique_ctor_factories.end(), \ |
214 | "Implementation [" + name + "::" + alias + "] not found!"); \ |
215 | return (factory->second)(config); \ |
216 | } \ |
217 | T *create_raw(const std::string &alias) { \ |
218 | auto factory = implementation_raw_factories.find(alias); \ |
219 | TI_ASSERT_INFO( \ |
220 | factory != implementation_raw_factories.end(), \ |
221 | "Implementation [" + name + "::" + alias + "] not found!"); \ |
222 | return (factory->second)(); \ |
223 | } \ |
224 | T *create_placement(const std::string &alias, void *place) { \ |
225 | auto factory = implementation_placement_factories.find(alias); \ |
226 | TI_ASSERT_INFO( \ |
227 | factory != implementation_placement_factories.end(), \ |
228 | "Implementation [" + name + "::" + alias + "] not found!"); \ |
229 | return (factory->second)(place); \ |
230 | } \ |
231 | static TI_IMPLEMENTATION_HOLDER_NAME(T) * get_instance() { \ |
232 | return static_cast<TI_IMPLEMENTATION_HOLDER_NAME(T) *>( \ |
233 | get_implementation_holder_instance_##T()); \ |
234 | } \ |
235 | }; \ |
236 | extern TI_IMPLEMENTATION_HOLDER_NAME(T) * TI_IMPLEMENTATION_HOLDER_PTR(T); |
237 | |
238 | #define TI_INTERFACE_DEF(class_name, base_alias) \ |
239 | template <> \ |
240 | std::shared_ptr<class_name> create_instance(const std::string &alias) { \ |
241 | return TI_IMPLEMENTATION_HOLDER_NAME(class_name)::get_instance()->create( \ |
242 | alias); \ |
243 | } \ |
244 | template <> \ |
245 | std::shared_ptr<class_name> create_instance(const std::string &alias, \ |
246 | const Config &config) { \ |
247 | auto instance = create_instance<class_name>(alias); \ |
248 | instance->initialize(config); \ |
249 | return instance; \ |
250 | } \ |
251 | template <> \ |
252 | std::unique_ptr<class_name> create_instance_unique( \ |
253 | const std::string &alias) { \ |
254 | return TI_IMPLEMENTATION_HOLDER_NAME(class_name)::get_instance() \ |
255 | ->create_unique(alias); \ |
256 | } \ |
257 | template <> \ |
258 | std::unique_ptr<class_name> create_instance_unique(const std::string &alias, \ |
259 | const Config &config) { \ |
260 | auto instance = create_instance_unique<class_name>(alias); \ |
261 | instance->initialize(config); \ |
262 | return instance; \ |
263 | } \ |
264 | template <> \ |
265 | std::unique_ptr<class_name> create_instance_unique_ctor( \ |
266 | const std::string &alias, const Dict &config) { \ |
267 | return TI_IMPLEMENTATION_HOLDER_NAME(class_name)::get_instance() \ |
268 | ->create_unique_ctor(alias, config); \ |
269 | } \ |
270 | template <> \ |
271 | class_name *create_instance_raw(const std::string &alias) { \ |
272 | return TI_IMPLEMENTATION_HOLDER_NAME(class_name)::get_instance() \ |
273 | ->create_raw(alias); \ |
274 | } \ |
275 | template <> \ |
276 | class_name *create_instance_placement(const std::string &alias, \ |
277 | void *place) { \ |
278 | return TI_IMPLEMENTATION_HOLDER_NAME(class_name)::get_instance() \ |
279 | ->create_placement(alias, place); \ |
280 | } \ |
281 | template <> \ |
282 | class_name *create_instance_placement(const std::string &alias, void *place, \ |
283 | const Config &config) { \ |
284 | auto instance = create_instance_placement<class_name>(alias, place); \ |
285 | instance->initialize(config); \ |
286 | return instance; \ |
287 | } \ |
288 | template <> \ |
289 | class_name *create_instance_raw(const std::string &alias, \ |
290 | const Config &config) { \ |
291 | auto instance = create_instance_raw<class_name>(alias); \ |
292 | instance->initialize(config); \ |
293 | return instance; \ |
294 | } \ |
295 | template <> \ |
296 | std::vector<std::string> get_implementation_names<class_name>() { \ |
297 | return TI_IMPLEMENTATION_HOLDER_NAME(class_name)::get_instance() \ |
298 | ->get_implementation_names(); \ |
299 | } \ |
300 | TI_IMPLEMENTATION_HOLDER_NAME(class_name) * \ |
301 | TI_IMPLEMENTATION_HOLDER_PTR(class_name) = nullptr; \ |
302 | void *get_implementation_holder_instance_##class_name() { \ |
303 | if (!TI_IMPLEMENTATION_HOLDER_PTR(class_name)) { \ |
304 | TI_IMPLEMENTATION_HOLDER_PTR(class_name) = \ |
305 | new TI_IMPLEMENTATION_HOLDER_NAME(class_name)(base_alias); \ |
306 | } \ |
307 | return TI_IMPLEMENTATION_HOLDER_PTR(class_name); \ |
308 | } |
309 | |
310 | #define TI_IMPLEMENTATION(base_class_name, class_name, alias) \ |
311 | class ImplementationInjector_##base_class_name##class_name { \ |
312 | public: \ |
313 | ImplementationInjector_##base_class_name##class_name() { \ |
314 | TI_IMPLEMENTATION_HOLDER_NAME(base_class_name)::get_instance() \ |
315 | ->insert<class_name>(alias); \ |
316 | } \ |
317 | } ImplementationInjector_##base_class_name##class_name##instance; |
318 | |
319 | #define TI_IMPLEMENTATION_NEW(base_class_name, class_name) \ |
320 | class ImplementationInjector_##base_class_name##class_name { \ |
321 | public: \ |
322 | ImplementationInjector_##base_class_name##class_name() { \ |
323 | TI_IMPLEMENTATION_HOLDER_NAME(base_class_name)::get_instance() \ |
324 | ->insert_new<class_name>(class_name::get_name_static()); \ |
325 | } \ |
326 | } ImplementationInjector_##base_class_name##class_name##instance; |
327 | |
328 | #define TI_NAME(alias) \ |
329 | virtual std::string get_name() const override { return get_name_static(); } \ |
330 | static std::string get_name_static() { return alias; } |
331 | |
332 | } // namespace taichi |
333 | |