| /* |
| * Copyright (c) 2023 Arm Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #ifndef CKW_PROTOTYPE_INCLUDE_CKW_SCALARVALUE_H |
| #define CKW_PROTOTYPE_INCLUDE_CKW_SCALARVALUE_H |
| |
| #include "ckw/Error.h" |
| |
| #include <cstdint> |
| |
| namespace ckw |
| { |
| |
| /** The scalar value known at compile-time. */ |
| class ScalarValue |
| { |
| public: |
| /** Initialize a new instance of @ref ScalarValue class with integer value 0. */ |
| ScalarValue() |
| { |
| _type = Type::INT; |
| _value.i64 = 0; |
| } |
| |
| /** Initialize a new instance of @ref ScalarValue class with the specified value. */ |
| template <typename T> |
| ScalarValue(T value) |
| { |
| set(value); |
| } |
| |
| /** Set the value. */ |
| template <typename T> |
| void set(T value) |
| { |
| CKW_ASSERT(::std::is_integral<T>::value || ::std::is_floating_point<T>::value); |
| CKW_ASSERT(sizeof(T) <= 8); |
| |
| _size = sizeof(T); |
| |
| if (::std::is_integral<T>::value) |
| { |
| if (::std::is_signed<T>::value) |
| { |
| _type = Type::INT; |
| _value.i64 = value; |
| } |
| else |
| { |
| _type = Type::UINT; |
| _value.u64 = value; |
| } |
| } |
| else |
| { |
| _type = Type::FLOAT; |
| _value.f64 = value; |
| } |
| } |
| |
| /** Get the value. |
| * |
| * The caller must make sure that what has been stored in the object must fit |
| * the output data type without data corruption or loss of accuracy. |
| */ |
| template <typename T> |
| T get() const |
| { |
| CKW_ASSERT(::std::is_integral<T>::value || ::std::is_floating_point<T>::value); |
| CKW_ASSERT(sizeof(T) >= _size); |
| |
| if (::std::is_integral<T>::value) |
| { |
| if (::std::is_signed<T>::value) |
| { |
| CKW_ASSERT(_type == Type::INT || _type == Type::UINT); |
| CKW_ASSERT_IF(_type == Type::UINT, sizeof(T) > _size); |
| |
| return _value.i64; |
| } |
| else |
| { |
| CKW_ASSERT(_type == Type::INT); |
| |
| return _value.u64; |
| } |
| } |
| else |
| { |
| return _value.f64; |
| } |
| } |
| |
| private: |
| union Value |
| { |
| int64_t i64; |
| uint64_t u64; |
| double f64; |
| }; |
| |
| enum class Type : int32_t |
| { |
| UINT, |
| INT, |
| FLOAT, |
| }; |
| |
| Value _value{}; |
| Type _type{}; |
| uint32_t _size{}; |
| }; |
| |
| } // namespace ckw |
| |
| #endif // CKW_PROTOTYPE_INCLUDE_CKW_SCALARVALUE_H |