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      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 #ifndef LIBTEXTCLASSIFIER_ANNOTATOR_KNOWLEDGE_KNOWLEDGE_ENGINE_DUMMY_H_
     18 #define LIBTEXTCLASSIFIER_ANNOTATOR_KNOWLEDGE_KNOWLEDGE_ENGINE_DUMMY_H_
     19 
     20 #include <string>
     21 
     22 #include "annotator/types.h"
     23 #include "utils/utf8/unilib.h"
     24 
     25 namespace libtextclassifier3 {
     26 
     27 // A dummy implementation of the knowledge engine.
     28 class KnowledgeEngine {
     29  public:
     30   explicit KnowledgeEngine(const UniLib* unilib) {}
     31 
     32   bool Initialize(const std::string& serialized_config) { return true; }
     33 
     34   bool ClassifyText(const std::string& context, CodepointSpan selection_indices,
     35                     ClassificationResult* classification_result) const {
     36     return false;
     37   }
     38 
     39   bool Chunk(const std::string& context,
     40              std::vector<AnnotatedSpan>* result) const {
     41     return true;
     42   }
     43 
     44   bool LookUpEntity(const std::string& id,
     45                     std::string* serialized_knowledge_result) const {
     46     return false;
     47   }
     48 };
     49 
     50 }  // namespace libtextclassifier3
     51 
     52 #endif  // LIBTEXTCLASSIFIER_ANNOTATOR_KNOWLEDGE_KNOWLEDGE_ENGINE_DUMMY_H_
     53