143 lines
4.0 KiB
C++
143 lines
4.0 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright:
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* 2016-2017, Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef CRUFT_VK_EXCEPT_HPP
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#define CRUFT_VK_EXCEPT_HPP
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#include "./vk.hpp"
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#include <cruft/util/debug.hpp>
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#include <cruft/util/types/traits.hpp>
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#include <exception>
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#include <functional>
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#include <type_traits>
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namespace cruft::vk {
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class error : public std::exception {
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public:
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static void try_code (VkResult);
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static void throw_code [[noreturn]] (VkResult);
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/// invokes a supplied function with the given arguments and tests
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/// that it indicates success using try_code iff it returns a VkResult,
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/// else it returns the result of the function.
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///
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/// while it would simplify writing this function to avoid
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/// non-VkResult functions it simplifies some of the upper layers of
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/// try_foo functions to allow them anyway (eg,
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/// vkGetBufferMemoryRequirements is otherwise usable with try_query
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/// if we ignore the VkResult requirement)
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template <
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typename FuncT,
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typename ...Args
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>
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static auto
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try_func (FuncT &&func, Args &&...args)
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{
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if constexpr (std::is_same_v<
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typename func_traits<FuncT>::return_type,
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VkResult
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>)
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{
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try_code (func (std::forward<Args> (args)...));
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return;
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}
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else
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return func (std::forward<Args> (args)...);
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}
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/// returns a ValueT using an invokable FuncT with arguments
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/// [Args..., &ValueT] and returns the result after testing for
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/// success.
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template <typename FuncT, typename ...Args>
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static auto
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try_query (FuncT &&func, Args &&...args)
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{
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using ValueT = std::remove_pointer_t<
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std::tuple_element_t<
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sizeof... (Args),
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typename func_traits<FuncT>::argument_types
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>
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>;
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ValueT value;
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try_func (func, std::forward<Args> (args)..., &value);
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return value;
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}
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template <
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template <typename...> class ContainerT = std::vector,
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typename FuncT,
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typename ...Args
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>
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static auto
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try_array (FuncT &&func, Args &&...args)
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{
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uint32_t expected = 0;
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try_func (func, args..., &expected, nullptr);
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using ValueT = std::remove_pointer_t<
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std::tuple_element_t<
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sizeof...(Args) + 1,
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typename func_traits<FuncT>::argument_types
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>
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>;
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ValueT values[expected];
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uint32_t found = 0;
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try_func (func, args..., &found, values + 0);
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CHECK_EQ (expected, found);
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return ContainerT<ValueT> {
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values + 0,
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values + found
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};
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}
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};
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class invalid_argument : public error {
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public:
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invalid_argument (const char *_what) noexcept:
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m_what (_what)
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{ ; }
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const char*
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what (void) const noexcept override
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{
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return m_what;
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}
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private:
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const char *m_what;
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};
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template <VkResult>
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class error_code : public error {
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public:
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const char* what (void) const noexcept override;
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};
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}
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#endif
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