1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 // Helper utilities for testing Annotator.
18
19 #ifndef LIBTEXTCLASSIFIER_UTILS_TESTING_ANNOTATOR_H_
20 #define LIBTEXTCLASSIFIER_UTILS_TESTING_ANNOTATOR_H_
21
22 #include <memory>
23 #include <string>
24
25 #include "annotator/model_generated.h"
26 #include "annotator/types.h"
27 #include "flatbuffers/flatbuffers.h"
28
29 namespace libtextclassifier3 {
30
31 // Loads FlatBuffer model, unpacks it and passes it to the visitor_fn so that it
32 // can modify it. Afterwards the modified unpacked model is serialized back to a
33 // flatbuffer.
34 template <typename Fn>
ModifyAnnotatorModel(const std::string & model_flatbuffer,Fn visitor_fn)35 std::string ModifyAnnotatorModel(const std::string& model_flatbuffer,
36 Fn visitor_fn) {
37 std::unique_ptr<ModelT> unpacked_model =
38 UnPackModel(model_flatbuffer.c_str());
39
40 visitor_fn(unpacked_model.get());
41
42 flatbuffers::FlatBufferBuilder builder;
43 FinishModelBuffer(builder, Model::Pack(builder, unpacked_model.get()));
44
45 return std::string(reinterpret_cast<char*>(builder.GetBufferPointer()),
46 builder.GetSize());
47 }
48
49 } // namespace libtextclassifier3
50
51 #endif // LIBTEXTCLASSIFIER_UTILS_TESTING_ANNOTATOR_H_
52