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ResultSetReductionInterpreter.h
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1 /*
2  * Copyright 2022 HEAVY.AI, Inc.
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 #pragma once
18 
19 #include "ResultSetReductionOps.h"
20 
21 #include <optional>
22 #include <unordered_map>
23 
25  public:
26  union EvalValue {
27  int64_t int_val;
28  double double_val;
29  float float_val;
30  const void* ptr;
31  void* mutable_ptr;
32  };
33 
34  static EvalValue run(const size_t execution_id,
35  const Function* function,
36  const std::vector<EvalValue>& inputs);
37 
38  template <typename T>
39  static EvalValue MakeEvalValue(const T& val) {
40  EvalValue ret;
41  if constexpr (std::is_integral<T>::value) {
42  ret.int_val = static_cast<int64_t>(val);
43  } else if constexpr (std::is_same<T, float>::value) {
44  ret.float_val = val;
45  } else if constexpr (std::is_same<T, double>::value) {
46  ret.double_val = val;
47  } else if constexpr (std::is_pointer<T>::value) {
48  ret.ptr = val;
49  }
50  return ret;
51  }
52 
53  static std::optional<EvalValue> run(
54  const size_t execution_id,
55  const std::vector<std::unique_ptr<Instruction>>& body,
56  const std::vector<EvalValue>& vars);
57 };
static EvalValue MakeEvalValue(const T &val)
static EvalValue run(const size_t execution_id, const Function *function, const std::vector< EvalValue > &inputs)