1 /* 2 * Copyright (C) 2017 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_TESTS_FUNCTIONS_H_ 18 #define LIBTEXTCLASSIFIER_TESTS_FUNCTIONS_H_ 19 20 #include <math.h> 21 22 #include "common/registry.h" 23 24 namespace libtextclassifier { 25 namespace nlp_core { 26 namespace functions { 27 // Abstract double -> double function. 28 class Function : public RegisterableClass<Function> { 29 public: ~Function()30 virtual ~Function() {} 31 virtual double Evaluate(double x) = 0; 32 }; 33 34 class Cos : public Function { 35 public: Evaluate(double x)36 double Evaluate(double x) override { return cos(x); } 37 TC_DEFINE_REGISTRATION_METHOD("cos", Cos); 38 }; 39 40 class Exp : public Function { 41 public: Evaluate(double x)42 double Evaluate(double x) override { return exp(x); } 43 TC_DEFINE_REGISTRATION_METHOD("exp", Exp); 44 }; 45 46 // Abstract int -> int function. 47 class IntFunction : public RegisterableClass<IntFunction> { 48 public: ~IntFunction()49 virtual ~IntFunction() {} 50 virtual int Evaluate(int k) = 0; 51 }; 52 53 class Inc : public IntFunction { 54 public: Evaluate(int k)55 int Evaluate(int k) override { return k + 1; } 56 TC_DEFINE_REGISTRATION_METHOD("inc", Inc); 57 }; 58 59 class Dec : public IntFunction { 60 public: Evaluate(int k)61 int Evaluate(int k) override { return k + 1; } 62 TC_DEFINE_REGISTRATION_METHOD("dec", Dec); 63 }; 64 } // namespace functions 65 66 // Should be inside namespace libtextclassifier::nlp_core. 67 TC_DECLARE_CLASS_REGISTRY_NAME(functions::Function); 68 TC_DECLARE_CLASS_REGISTRY_NAME(functions::IntFunction); 69 70 } // namespace nlp_core 71 } // namespace libtextclassifier 72 73 #endif // LIBTEXTCLASSIFIER_TESTS_FUNCTIONS_H_ 74