Viet-Hoa Do | bd4f6b9 | 2023-05-30 09:34:32 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2023 Arm Limited. |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | |
Viet-Hoa Do | ce3c48c | 2023-07-03 13:44:43 +0100 | [diff] [blame] | 25 | #ifndef CKW_PROTOTYPE_INCLUDE_CKW_SCALARVALUE_H |
| 26 | #define CKW_PROTOTYPE_INCLUDE_CKW_SCALARVALUE_H |
Viet-Hoa Do | bd4f6b9 | 2023-05-30 09:34:32 +0100 | [diff] [blame] | 27 | |
| 28 | #include "ckw/Error.h" |
| 29 | |
| 30 | #include <cstdint> |
| 31 | |
| 32 | namespace ckw |
| 33 | { |
| 34 | |
| 35 | /** The scalar value known at compile-time. */ |
| 36 | class ScalarValue |
| 37 | { |
| 38 | public: |
| 39 | /** Initialize a new instance of @ref ScalarValue class with integer value 0. */ |
| 40 | ScalarValue() |
| 41 | { |
| 42 | _type = Type::INT; |
| 43 | _value.i64 = 0; |
| 44 | } |
| 45 | |
| 46 | /** Initialize a new instance of @ref ScalarValue class with the specified value. */ |
| 47 | template <typename T> |
| 48 | ScalarValue(T value) |
| 49 | { |
| 50 | set(value); |
| 51 | } |
| 52 | |
| 53 | /** Set the value. */ |
| 54 | template <typename T> |
| 55 | void set(T value) |
| 56 | { |
| 57 | CKW_ASSERT(::std::is_integral<T>::value || ::std::is_floating_point<T>::value); |
| 58 | CKW_ASSERT(sizeof(T) <= 8); |
| 59 | |
| 60 | _size = sizeof(T); |
| 61 | |
| 62 | if(::std::is_integral<T>::value) |
| 63 | { |
| 64 | if(::std::is_signed<T>::value) |
| 65 | { |
| 66 | _type = Type::INT; |
| 67 | _value.i64 = value; |
| 68 | } |
| 69 | else |
| 70 | { |
| 71 | _type = Type::UINT; |
| 72 | _value.u64 = value; |
| 73 | } |
| 74 | } |
| 75 | else |
| 76 | { |
| 77 | _type = Type::FLOAT; |
| 78 | _value.f64 = value; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | /** Get the value. |
| 83 | * |
| 84 | * The caller must make sure that what has been stored in the object must fit |
| 85 | * the output data type without data corruption or loss of accuracy. |
| 86 | */ |
| 87 | template <typename T> |
| 88 | T get() const |
| 89 | { |
| 90 | CKW_ASSERT(::std::is_integral<T>::value || ::std::is_floating_point<T>::value); |
| 91 | CKW_ASSERT(sizeof(T) >= _size); |
| 92 | |
| 93 | if(::std::is_integral<T>::value) |
| 94 | { |
| 95 | if(::std::is_signed<T>::value) |
| 96 | { |
| 97 | CKW_ASSERT(_type == Type::INT || _type == Type::UINT); |
| 98 | CKW_ASSERT_IF(_type == Type::UINT, sizeof(T) > _size); |
| 99 | |
| 100 | return _value.i64; |
| 101 | } |
| 102 | else |
| 103 | { |
| 104 | CKW_ASSERT(_type == Type::INT); |
| 105 | |
| 106 | return _value.u64; |
| 107 | } |
| 108 | } |
| 109 | else |
| 110 | { |
| 111 | return _value.f64; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | private: |
| 116 | union Value |
| 117 | { |
| 118 | int64_t i64; |
| 119 | uint64_t u64; |
| 120 | double f64; |
| 121 | }; |
| 122 | |
| 123 | enum class Type : int32_t |
| 124 | { |
| 125 | UINT, |
| 126 | INT, |
| 127 | FLOAT, |
| 128 | }; |
| 129 | |
| 130 | Value _value{}; |
| 131 | Type _type{}; |
| 132 | uint32_t _size{}; |
| 133 | }; |
| 134 | |
| 135 | } // namespace ckw |
| 136 | |
Viet-Hoa Do | ce3c48c | 2023-07-03 13:44:43 +0100 | [diff] [blame] | 137 | #endif // CKW_PROTOTYPE_INCLUDE_CKW_SCALARVALUE_H |