78bb1d1571
0172df743 CMakeLists: Only add tests if MASTER_PROJECT 52e8dff62 0.1.11 fc8d745cc container: hmap fixups 5b5c0130d memory: Add overaligned_unique_ptr c7c9bbd17 mcl: Increment version to 0.1.10 678aa32a8 assert: Handle expr strings separately b38a9d2ef tests: Update to Catch 3.0.1 8aeacfe32 mcl: Increment version to 0.1.9 b468a2ab5 mcl: meta_byte: Split off meta_byte_group d3ae1ae47 mcl: ihmap: Implement inline variant of hmap 5cbfe6eed mcl: hmap: Split detail into headers ee7467677 mcl: hmap: Better default hash f1d902ce9 mcl: hash: Add xmrx 322a221f0 mcl: hmap: Bugfix skip_empty_or_tombstone 689f393f7 mcl: hmap: x64 implementation fa6ff746a mcl: hmap: Add generic meta_byte_group implementation 91e3073ad mcl: hmap: Add more member functions 4998335a5 mcl: Install only if master project 7ff4d2549 mcl: hmap prototype 416a2c6b5 mcl: clang-format: Adopt WebKit style bracing d5a46fa70 mcl/assert: Flush stderr e3b6cc79e externals: Update mcl to 0.1.7 190c68475 mcl: Build as PIC git-subtree-dir: externals/mcl git-subtree-split: 0172df74316351868c215f735e5a2538b10d71fb
94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
// This file is part of the mcl project.
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// Copyright (c) 2022 merryhime
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// SPDX-License-Identifier: MIT
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#pragma once
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#include <exception>
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#include <type_traits>
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#include <utility>
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#include <mcl/macro/anonymous_variable.hpp>
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namespace mcl::detail {
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struct scope_exit_tag {};
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struct scope_fail_tag {};
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struct scope_success_tag {};
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template<typename Function>
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class scope_exit final {
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public:
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explicit scope_exit(Function&& fn)
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: function(std::move(fn)) {}
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~scope_exit() noexcept
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{
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function();
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}
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private:
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Function function;
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};
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template<typename Function>
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class scope_fail final {
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public:
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explicit scope_fail(Function&& fn)
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: function(std::move(fn)), exception_count(std::uncaught_exceptions()) {}
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~scope_fail() noexcept
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{
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if (std::uncaught_exceptions() > exception_count) {
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function();
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}
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}
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private:
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Function function;
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int exception_count;
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};
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template<typename Function>
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class scope_success final {
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public:
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explicit scope_success(Function&& fn)
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: function(std::move(fn)), exception_count(std::uncaught_exceptions()) {}
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~scope_success()
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{
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if (std::uncaught_exceptions() <= exception_count) {
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function();
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}
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}
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private:
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Function function;
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int exception_count;
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};
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// We use ->* here as it has the highest precedence of the operators we can use.
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template<typename Function>
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auto operator->*(scope_exit_tag, Function&& function)
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{
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return scope_exit<std::decay_t<Function>>{std::forward<Function>(function)};
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}
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template<typename Function>
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auto operator->*(scope_fail_tag, Function&& function)
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{
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return scope_fail<std::decay_t<Function>>{std::forward<Function>(function)};
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}
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template<typename Function>
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auto operator->*(scope_success_tag, Function&& function)
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{
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return scope_success<std::decay_t<Function>>{std::forward<Function>(function)};
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}
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} // namespace mcl::detail
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#define SCOPE_EXIT auto ANONYMOUS_VARIABLE(MCL_SCOPE_EXIT_VAR_) = ::mcl::detail::scope_exit_tag{}->*[&]() noexcept
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#define SCOPE_FAIL auto ANONYMOUS_VARIABLE(MCL_SCOPE_FAIL_VAR_) = ::mcl::detail::scope_fail_tag{}->*[&]() noexcept
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#define SCOPE_SUCCESS auto ANONYMOUS_VARIABLE(MCL_SCOPE_FAIL_VAR_) = ::mcl::detail::scope_success_tag{}->*[&]()
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