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Diffstat (limited to 'third_party/abseil_cpp/absl/types/internal/conformance_profile.h')
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1 files changed, 0 insertions, 931 deletions
diff --git a/third_party/abseil_cpp/absl/types/internal/conformance_profile.h b/third_party/abseil_cpp/absl/types/internal/conformance_profile.h deleted file mode 100644 index cf64ff4fcd..0000000000 --- a/third_party/abseil_cpp/absl/types/internal/conformance_profile.h +++ /dev/null @@ -1,931 +0,0 @@ -// Copyright 2019 The Abseil Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// ----------------------------------------------------------------------------- -// conformance_profiles.h -// ----------------------------------------------------------------------------- -// -// This file contains templates for representing "Regularity Profiles" and -// concisely-named versions of commonly used Regularity Profiles. -// -// A Regularity Profile is a compile-time description of the types of operations -// that a given type supports, along with properties of those operations when -// they do exist. For instance, a Regularity Profile may describe a type that -// has a move-constructor that is noexcept and a copy constructor that is not -// noexcept. This description can then be examined and passed around to other -// templates for the purposes of asserting expectations on user-defined types -// via a series trait checks, or for determining what kinds of run-time tests -// are able to be performed. -// -// Regularity Profiles are also used when creating "archetypes," which are -// minimum-conforming types that meet all of the requirements of a given -// Regularity Profile. For more information regarding archetypes, see -// "conformance_archetypes.h". - -#ifndef ABSL_TYPES_INTERNAL_CONFORMANCE_PROFILE_H_ -#define ABSL_TYPES_INTERNAL_CONFORMANCE_PROFILE_H_ - -#include <set> -#include <type_traits> -#include <utility> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/algorithm/container.h" -#include "absl/meta/type_traits.h" -#include "absl/strings/ascii.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/string_view.h" -#include "absl/types/internal/conformance_testing_helpers.h" -#include "absl/utility/utility.h" - -// TODO(calabrese) Add support for extending profiles. - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace types_internal { - -// Converts an enum to its underlying integral value. -template <typename Enum> -constexpr absl::underlying_type_t<Enum> UnderlyingValue(Enum value) { - return static_cast<absl::underlying_type_t<Enum>>(value); -} - -// A tag type used in place of a matcher when checking that an assertion result -// does not actually contain any errors. -struct NoError {}; - -// ----------------------------------------------------------------------------- -// ConformanceErrors -// ----------------------------------------------------------------------------- -class ConformanceErrors { - public: - // Setup the error reporting mechanism by seeding it with the name of the type - // that is being tested. - explicit ConformanceErrors(std::string type_name) - : assertion_result_(false), type_name_(std::move(type_name)) { - assertion_result_ << "\n\n" - "Assuming the following type alias:\n" - "\n" - " using _T = " - << type_name_ << ";\n\n"; - outputDivider(); - } - - // Adds the test name to the list of successfully run tests iff it was not - // previously reported as failing. This behavior is useful for tests that - // have multiple parts, where failures and successes are reported individually - // with the same test name. - void addTestSuccess(absl::string_view test_name) { - auto normalized_test_name = absl::AsciiStrToLower(test_name); - - // If the test is already reported as failing, do not add it to the list of - // successes. - if (test_failures_.find(normalized_test_name) == test_failures_.end()) { - test_successes_.insert(std::move(normalized_test_name)); - } - } - - // Streams a single error description into the internal buffer (a visual - // divider is automatically inserted after the error so that multiple errors - // are visibly distinct). - // - // This function increases the error count by 1. - // - // TODO(calabrese) Determine desired behavior when if this function throws. - template <class... P> - void addTestFailure(absl::string_view test_name, const P&... args) { - // Output a message related to the test failure. - assertion_result_ << "\n\n" - "Failed test: " - << test_name << "\n\n"; - addTestFailureImpl(args...); - assertion_result_ << "\n\n"; - outputDivider(); - - auto normalized_test_name = absl::AsciiStrToLower(test_name); - - // If previous parts of this test succeeded, remove it from that set. - test_successes_.erase(normalized_test_name); - - // Add the test name to the list of failed tests. - test_failures_.insert(std::move(normalized_test_name)); - - has_error_ = true; - } - - // Convert this object into a testing::AssertionResult instance such that it - // can be used with gtest. - ::testing::AssertionResult assertionResult() const { - return has_error_ ? assertion_result_ : ::testing::AssertionSuccess(); - } - - // Convert this object into a testing::AssertionResult instance such that it - // can be used with gtest. This overload expects errors, using the specified - // matcher. - ::testing::AssertionResult expectFailedTests( - const std::set<std::string>& test_names) const { - // Since we are expecting nonconformance, output an error message when the - // type actually conformed to the specified profile. - if (!has_error_) { - return ::testing::AssertionFailure() - << "Unexpected conformance of type:\n" - " " - << type_name_ << "\n\n"; - } - - // Get a list of all expected failures that did not actually fail - // (or that were not run). - std::vector<std::string> nonfailing_tests; - absl::c_set_difference(test_names, test_failures_, - std::back_inserter(nonfailing_tests)); - - // Get a list of all "expected failures" that were never actually run. - std::vector<std::string> unrun_tests; - absl::c_set_difference(nonfailing_tests, test_successes_, - std::back_inserter(unrun_tests)); - - // Report when the user specified tests that were not run. - if (!unrun_tests.empty()) { - const bool tests_were_run = - !(test_failures_.empty() && test_successes_.empty()); - - // Prepare an assertion result used in the case that tests pass that were - // expected to fail. - ::testing::AssertionResult result = ::testing::AssertionFailure(); - result << "When testing type:\n " << type_name_ - << "\n\nThe following tests were expected to fail but were not " - "run"; - - if (tests_were_run) result << " (was the test name spelled correctly?)"; - - result << ":\n\n"; - - // List all of the tests that unexpectedly passed. - for (const auto& test_name : unrun_tests) { - result << " " << test_name << "\n"; - } - - if (!tests_were_run) result << "\nNo tests were run."; - - if (!test_failures_.empty()) { - // List test failures - result << "\nThe tests that were run and failed are:\n\n"; - for (const auto& test_name : test_failures_) { - result << " " << test_name << "\n"; - } - } - - if (!test_successes_.empty()) { - // List test successes - result << "\nThe tests that were run and succeeded are:\n\n"; - for (const auto& test_name : test_successes_) { - result << " " << test_name << "\n"; - } - } - - return result; - } - - // If some tests passed when they were expected to fail, alert the caller. - if (nonfailing_tests.empty()) return ::testing::AssertionSuccess(); - - // Prepare an assertion result used in the case that tests pass that were - // expected to fail. - ::testing::AssertionResult unexpected_successes = - ::testing::AssertionFailure(); - unexpected_successes << "When testing type:\n " << type_name_ - << "\n\nThe following tests passed when they were " - "expected to fail:\n\n"; - - // List all of the tests that unexpectedly passed. - for (const auto& test_name : nonfailing_tests) { - unexpected_successes << " " << test_name << "\n"; - } - - return unexpected_successes; - } - - private: - void outputDivider() { - assertion_result_ << "========================================"; - } - - void addTestFailureImpl() {} - - template <class H, class... T> - void addTestFailureImpl(const H& head, const T&... tail) { - assertion_result_ << head; - addTestFailureImpl(tail...); - } - - ::testing::AssertionResult assertion_result_; - std::set<std::string> test_failures_; - std::set<std::string> test_successes_; - std::string type_name_; - bool has_error_ = false; -}; - -template <class T, class /*Enabler*/ = void> -struct PropertiesOfImpl {}; - -template <class T> -struct PropertiesOfImpl<T, absl::void_t<typename T::properties>> { - using type = typename T::properties; -}; - -template <class T> -struct PropertiesOfImpl<T, absl::void_t<typename T::profile_alias_of>> { - using type = typename PropertiesOfImpl<typename T::profile_alias_of>::type; -}; - -template <class T> -struct PropertiesOf : PropertiesOfImpl<T> {}; - -template <class T> -using PropertiesOfT = typename PropertiesOf<T>::type; - -// NOTE: These enums use this naming convention to be consistent with the -// standard trait names, which is useful since it allows us to match up each -// enum name with a corresponding trait name in macro definitions. - -// An enum that describes the various expectations on an operations existence. -enum class function_support { maybe, yes, nothrow, trivial }; - -constexpr const char* PessimisticPropertyDescription(function_support v) { - return v == function_support::maybe - ? "no" - : v == function_support::yes - ? "yes, potentially throwing" - : v == function_support::nothrow ? "yes, nothrow" - : "yes, trivial"; -} - -// Return a string that describes the kind of property support that was -// expected. -inline std::string ExpectedFunctionKindList(function_support min, - function_support max) { - if (min == max) { - std::string result = - absl::StrCat("Expected:\n ", - PessimisticPropertyDescription( - static_cast<function_support>(UnderlyingValue(min))), - "\n"); - return result; - } - - std::string result = "Expected one of:\n"; - for (auto curr_support = UnderlyingValue(min); - curr_support <= UnderlyingValue(max); ++curr_support) { - absl::StrAppend(&result, " ", - PessimisticPropertyDescription( - static_cast<function_support>(curr_support)), - "\n"); - } - - return result; -} - -template <class Enum> -void ExpectModelOfImpl(ConformanceErrors* errors, Enum min_support, - Enum max_support, Enum kind) { - const auto kind_value = UnderlyingValue(kind); - const auto min_support_value = UnderlyingValue(min_support); - const auto max_support_value = UnderlyingValue(max_support); - - if (!(kind_value >= min_support_value && kind_value <= max_support_value)) { - errors->addTestFailure( - PropertyName(kind), "**Failed property expectation**\n\n", - ExpectedFunctionKindList( - static_cast<function_support>(min_support_value), - static_cast<function_support>(max_support_value)), - '\n', "Actual:\n ", - PessimisticPropertyDescription( - static_cast<function_support>(kind_value))); - } else { - errors->addTestSuccess(PropertyName(kind)); - } -} - -#define ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM(description, name) \ - enum class name { maybe, yes, nothrow, trivial }; \ - \ - constexpr const char* PropertyName(name v) { return description; } \ - static_assert(true, "") // Force a semicolon when using this macro. - -ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM("support for default construction", - default_constructible); -ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM("support for move construction", - move_constructible); -ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM("support for copy construction", - copy_constructible); -ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM("support for move assignment", - move_assignable); -ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM("support for copy assignment", - copy_assignable); -ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM("support for destruction", - destructible); - -#undef ABSL_INTERNAL_SPECIAL_MEMBER_FUNCTION_ENUM - -#define ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM(description, name) \ - enum class name { maybe, yes, nothrow }; \ - \ - constexpr const char* PropertyName(name v) { return description; } \ - static_assert(true, "") // Force a semicolon when using this macro. - -ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM("support for ==", equality_comparable); -ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM("support for !=", inequality_comparable); -ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM("support for <", less_than_comparable); -ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM("support for <=", less_equal_comparable); -ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM("support for >=", - greater_equal_comparable); -ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM("support for >", greater_than_comparable); - -ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM("support for swap", swappable); - -#undef ABSL_INTERNAL_INTRINSIC_FUNCTION_ENUM - -enum class hashable { maybe, yes }; - -constexpr const char* PropertyName(hashable v) { - return "support for std::hash"; -} - -template <class T> -using AlwaysFalse = std::false_type; - -#define ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER(name, property) \ - template <class T> \ - constexpr property property##_support_of() { \ - return std::is_##property<T>::value \ - ? std::is_nothrow_##property<T>::value \ - ? absl::is_trivially_##property<T>::value \ - ? property::trivial \ - : property::nothrow \ - : property::yes \ - : property::maybe; \ - } \ - \ - template <class T, class MinProf, class MaxProf> \ - void ExpectModelOf##name(ConformanceErrors* errors) { \ - (ExpectModelOfImpl)(errors, PropertiesOfT<MinProf>::property##_support, \ - PropertiesOfT<MaxProf>::property##_support, \ - property##_support_of<T>()); \ - } - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER(DefaultConstructible, - default_constructible); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER(MoveConstructible, - move_constructible); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER(CopyConstructible, - copy_constructible); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER(MoveAssignable, - move_assignable); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER(CopyAssignable, - copy_assignable); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER(Destructible, destructible); - -#undef ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_SPECIAL_MEMBER - -void BoolFunction(bool) noexcept; - -//////////////////////////////////////////////////////////////////////////////// -// -// A metafunction for checking if an operation exists through SFINAE. -// -// `T` is the type to test and Op is an alias containing the expression to test. -template <class T, template <class...> class Op, class = void> -struct IsOpableImpl : std::false_type {}; - -template <class T, template <class...> class Op> -struct IsOpableImpl<T, Op, absl::void_t<Op<T>>> : std::true_type {}; - -template <template <class...> class Op> -struct IsOpable { - template <class T> - using apply = typename IsOpableImpl<T, Op>::type; -}; -// -//////////////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////////////// -// -// A metafunction for checking if an operation exists and is also noexcept -// through SFINAE and the noexcept operator. -/// -// `T` is the type to test and Op is an alias containing the expression to test. -template <class T, template <class...> class Op, class = void> -struct IsNothrowOpableImpl : std::false_type {}; - -template <class T, template <class...> class Op> -struct IsNothrowOpableImpl<T, Op, absl::enable_if_t<Op<T>::value>> - : std::true_type {}; - -template <template <class...> class Op> -struct IsNothrowOpable { - template <class T> - using apply = typename IsNothrowOpableImpl<T, Op>::type; -}; -// -//////////////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////////////// -// -// A macro that produces the necessary function for reporting what kind of -// support a specific comparison operation has and a function for reporting an -// error if a given type's support for that operation does not meet the expected -// requirements. -#define ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON(name, property, op) \ - template <class T, \ - class Result = std::integral_constant< \ - bool, noexcept((BoolFunction)(std::declval<const T&>() op \ - std::declval<const T&>()))>> \ - using name = Result; \ - \ - template <class T> \ - constexpr property property##_support_of() { \ - return IsOpable<name>::apply<T>::value \ - ? IsNothrowOpable<name>::apply<T>::value ? property::nothrow \ - : property::yes \ - : property::maybe; \ - } \ - \ - template <class T, class MinProf, class MaxProf> \ - void ExpectModelOf##name(ConformanceErrors* errors) { \ - (ExpectModelOfImpl)(errors, PropertiesOfT<MinProf>::property##_support, \ - PropertiesOfT<MaxProf>::property##_support, \ - property##_support_of<T>()); \ - } -// -//////////////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////////////// -// -// Generate the necessary support-checking and error reporting functions for -// each of the comparison operators. -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON(EqualityComparable, - equality_comparable, ==); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON(InequalityComparable, - inequality_comparable, !=); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON(LessThanComparable, - less_than_comparable, <); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON(LessEqualComparable, - less_equal_comparable, <=); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON(GreaterEqualComparable, - greater_equal_comparable, >=); - -ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON(GreaterThanComparable, - greater_than_comparable, >); - -#undef ABSL_INTERNAL_PESSIMISTIC_MODEL_OF_COMPARISON -// -//////////////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////////////// -// -// The necessary support-checking and error-reporting functions for swap. -template <class T> -constexpr swappable swappable_support_of() { - return type_traits_internal::IsSwappable<T>::value - ? type_traits_internal::IsNothrowSwappable<T>::value - ? swappable::nothrow - : swappable::yes - : swappable::maybe; -} - -template <class T, class MinProf, class MaxProf> -void ExpectModelOfSwappable(ConformanceErrors* errors) { - (ExpectModelOfImpl)(errors, PropertiesOfT<MinProf>::swappable_support, - PropertiesOfT<MaxProf>::swappable_support, - swappable_support_of<T>()); -} -// -//////////////////////////////////////////////////////////////////////////////// - -//////////////////////////////////////////////////////////////////////////////// -// -// The necessary support-checking and error-reporting functions for std::hash. -template <class T> -constexpr hashable hashable_support_of() { - return type_traits_internal::IsHashable<T>::value ? hashable::yes - : hashable::maybe; -} - -template <class T, class MinProf, class MaxProf> -void ExpectModelOfHashable(ConformanceErrors* errors) { - (ExpectModelOfImpl)(errors, PropertiesOfT<MinProf>::hashable_support, - PropertiesOfT<MaxProf>::hashable_support, - hashable_support_of<T>()); -} -// -//////////////////////////////////////////////////////////////////////////////// - -template < - default_constructible DefaultConstructibleValue = - default_constructible::maybe, - move_constructible MoveConstructibleValue = move_constructible::maybe, - copy_constructible CopyConstructibleValue = copy_constructible::maybe, - move_assignable MoveAssignableValue = move_assignable::maybe, - copy_assignable CopyAssignableValue = copy_assignable::maybe, - destructible DestructibleValue = destructible::maybe, - equality_comparable EqualityComparableValue = equality_comparable::maybe, - inequality_comparable InequalityComparableValue = - inequality_comparable::maybe, - less_than_comparable LessThanComparableValue = less_than_comparable::maybe, - less_equal_comparable LessEqualComparableValue = - less_equal_comparable::maybe, - greater_equal_comparable GreaterEqualComparableValue = - greater_equal_comparable::maybe, - greater_than_comparable GreaterThanComparableValue = - greater_than_comparable::maybe, - swappable SwappableValue = swappable::maybe, - hashable HashableValue = hashable::maybe> -struct ConformanceProfile { - using properties = ConformanceProfile; - - static constexpr default_constructible - default_constructible_support = // NOLINT - DefaultConstructibleValue; - - static constexpr move_constructible move_constructible_support = // NOLINT - MoveConstructibleValue; - - static constexpr copy_constructible copy_constructible_support = // NOLINT - CopyConstructibleValue; - - static constexpr move_assignable move_assignable_support = // NOLINT - MoveAssignableValue; - - static constexpr copy_assignable copy_assignable_support = // NOLINT - CopyAssignableValue; - - static constexpr destructible destructible_support = // NOLINT - DestructibleValue; - - static constexpr equality_comparable equality_comparable_support = // NOLINT - EqualityComparableValue; - - static constexpr inequality_comparable - inequality_comparable_support = // NOLINT - InequalityComparableValue; - - static constexpr less_than_comparable - less_than_comparable_support = // NOLINT - LessThanComparableValue; - - static constexpr less_equal_comparable - less_equal_comparable_support = // NOLINT - LessEqualComparableValue; - - static constexpr greater_equal_comparable - greater_equal_comparable_support = // NOLINT - GreaterEqualComparableValue; - - static constexpr greater_than_comparable - greater_than_comparable_support = // NOLINT - GreaterThanComparableValue; - - static constexpr swappable swappable_support = SwappableValue; // NOLINT - - static constexpr hashable hashable_support = HashableValue; // NOLINT - - static constexpr bool is_default_constructible = // NOLINT - DefaultConstructibleValue != default_constructible::maybe; - - static constexpr bool is_move_constructible = // NOLINT - MoveConstructibleValue != move_constructible::maybe; - - static constexpr bool is_copy_constructible = // NOLINT - CopyConstructibleValue != copy_constructible::maybe; - - static constexpr bool is_move_assignable = // NOLINT - MoveAssignableValue != move_assignable::maybe; - - static constexpr bool is_copy_assignable = // NOLINT - CopyAssignableValue != copy_assignable::maybe; - - static constexpr bool is_destructible = // NOLINT - DestructibleValue != destructible::maybe; - - static constexpr bool is_equality_comparable = // NOLINT - EqualityComparableValue != equality_comparable::maybe; - - static constexpr bool is_inequality_comparable = // NOLINT - InequalityComparableValue != inequality_comparable::maybe; - - static constexpr bool is_less_than_comparable = // NOLINT - LessThanComparableValue != less_than_comparable::maybe; - - static constexpr bool is_less_equal_comparable = // NOLINT - LessEqualComparableValue != less_equal_comparable::maybe; - - static constexpr bool is_greater_equal_comparable = // NOLINT - GreaterEqualComparableValue != greater_equal_comparable::maybe; - - static constexpr bool is_greater_than_comparable = // NOLINT - GreaterThanComparableValue != greater_than_comparable::maybe; - - static constexpr bool is_swappable = // NOLINT - SwappableValue != swappable::maybe; - - static constexpr bool is_hashable = // NOLINT - HashableValue != hashable::maybe; -}; - -//////////////////////////////////////////////////////////////////////////////// -// -// Compliant SFINAE-friendliness is not always present on the standard library -// implementations that we support. This helper-struct (and associated enum) is -// used as a means to conditionally check the hashability support of a type. -enum class CheckHashability { no, yes }; - -template <class T, CheckHashability ShouldCheckHashability> -struct conservative_hashable_support_of; - -template <class T> -struct conservative_hashable_support_of<T, CheckHashability::no> { - static constexpr hashable Invoke() { return hashable::maybe; } -}; - -template <class T> -struct conservative_hashable_support_of<T, CheckHashability::yes> { - static constexpr hashable Invoke() { return hashable_support_of<T>(); } -}; -// -//////////////////////////////////////////////////////////////////////////////// - -// The ConformanceProfile that is expected based on introspection into the type -// by way of trait checks. -template <class T, CheckHashability ShouldCheckHashability> -struct SyntacticConformanceProfileOf { - using properties = ConformanceProfile< - default_constructible_support_of<T>(), move_constructible_support_of<T>(), - copy_constructible_support_of<T>(), move_assignable_support_of<T>(), - copy_assignable_support_of<T>(), destructible_support_of<T>(), - equality_comparable_support_of<T>(), - inequality_comparable_support_of<T>(), - less_than_comparable_support_of<T>(), - less_equal_comparable_support_of<T>(), - greater_equal_comparable_support_of<T>(), - greater_than_comparable_support_of<T>(), swappable_support_of<T>(), - conservative_hashable_support_of<T, ShouldCheckHashability>::Invoke()>; -}; - -#define ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF_IMPL(type, name) \ - template <default_constructible DefaultConstructibleValue, \ - move_constructible MoveConstructibleValue, \ - copy_constructible CopyConstructibleValue, \ - move_assignable MoveAssignableValue, \ - copy_assignable CopyAssignableValue, \ - destructible DestructibleValue, \ - equality_comparable EqualityComparableValue, \ - inequality_comparable InequalityComparableValue, \ - less_than_comparable LessThanComparableValue, \ - less_equal_comparable LessEqualComparableValue, \ - greater_equal_comparable GreaterEqualComparableValue, \ - greater_than_comparable GreaterThanComparableValue, \ - swappable SwappableValue, hashable HashableValue> \ - constexpr type ConformanceProfile< \ - DefaultConstructibleValue, MoveConstructibleValue, \ - CopyConstructibleValue, MoveAssignableValue, CopyAssignableValue, \ - DestructibleValue, EqualityComparableValue, InequalityComparableValue, \ - LessThanComparableValue, LessEqualComparableValue, \ - GreaterEqualComparableValue, GreaterThanComparableValue, SwappableValue, \ - HashableValue>::name - -#define ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(type) \ - ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF_IMPL(type, \ - type##_support); \ - ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF_IMPL(bool, is_##type) - -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(default_constructible); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(move_constructible); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(copy_constructible); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(move_assignable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(copy_assignable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(destructible); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(equality_comparable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(inequality_comparable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(less_than_comparable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(less_equal_comparable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(greater_equal_comparable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(greater_than_comparable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(swappable); -ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF(hashable); - -#undef ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF -#undef ABSL_INTERNAL_CONFORMANCE_TESTING_DATA_MEMBER_DEF_IMPL - -// Retrieve the enum with the minimum underlying value. -// Note: std::min is not constexpr in C++11, which is why this is necessary. -template <class H> -constexpr H MinEnum(H head) { - return head; -} - -template <class H, class N, class... T> -constexpr H MinEnum(H head, N next, T... tail) { - return (UnderlyingValue)(head) < (UnderlyingValue)(next) - ? (MinEnum)(head, tail...) - : (MinEnum)(next, tail...); -} - -template <class... Profs> -struct MinimalProfiles { - static constexpr default_constructible - default_constructible_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::default_constructible_support...); - - static constexpr move_constructible move_constructible_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::move_constructible_support...); - - static constexpr copy_constructible copy_constructible_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::copy_constructible_support...); - - static constexpr move_assignable move_assignable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::move_assignable_support...); - - static constexpr copy_assignable copy_assignable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::copy_assignable_support...); - - static constexpr destructible destructible_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::destructible_support...); - - static constexpr equality_comparable equality_comparable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::equality_comparable_support...); - - static constexpr inequality_comparable - inequality_comparable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::inequality_comparable_support...); - - static constexpr less_than_comparable - less_than_comparable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::less_than_comparable_support...); - - static constexpr less_equal_comparable - less_equal_comparable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::less_equal_comparable_support...); - - static constexpr greater_equal_comparable - greater_equal_comparable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::greater_equal_comparable_support...); - - static constexpr greater_than_comparable - greater_than_comparable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::greater_than_comparable_support...); - - static constexpr swappable swappable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::swappable_support...); - - static constexpr hashable hashable_support = // NOLINT - (MinEnum)(PropertiesOfT<Profs>::hashable_support...); - - using properties = ConformanceProfile< - default_constructible_support, move_constructible_support, - copy_constructible_support, move_assignable_support, - copy_assignable_support, destructible_support, - equality_comparable_support, inequality_comparable_support, - less_than_comparable_support, less_equal_comparable_support, - greater_equal_comparable_support, greater_than_comparable_support, - swappable_support, hashable_support>; -}; - -// Retrieve the enum with the greatest underlying value. -// Note: std::max is not constexpr in C++11, which is why this is necessary. -template <class H> -constexpr H MaxEnum(H head) { - return head; -} - -template <class H, class N, class... T> -constexpr H MaxEnum(H head, N next, T... tail) { - return (UnderlyingValue)(next) < (UnderlyingValue)(head) - ? (MaxEnum)(head, tail...) - : (MaxEnum)(next, tail...); -} - -template <class... Profs> -struct CombineProfilesImpl { - static constexpr default_constructible - default_constructible_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::default_constructible_support...); - - static constexpr move_constructible move_constructible_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::move_constructible_support...); - - static constexpr copy_constructible copy_constructible_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::copy_constructible_support...); - - static constexpr move_assignable move_assignable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::move_assignable_support...); - - static constexpr copy_assignable copy_assignable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::copy_assignable_support...); - - static constexpr destructible destructible_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::destructible_support...); - - static constexpr equality_comparable equality_comparable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::equality_comparable_support...); - - static constexpr inequality_comparable - inequality_comparable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::inequality_comparable_support...); - - static constexpr less_than_comparable - less_than_comparable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::less_than_comparable_support...); - - static constexpr less_equal_comparable - less_equal_comparable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::less_equal_comparable_support...); - - static constexpr greater_equal_comparable - greater_equal_comparable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::greater_equal_comparable_support...); - - static constexpr greater_than_comparable - greater_than_comparable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::greater_than_comparable_support...); - - static constexpr swappable swappable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::swappable_support...); - - static constexpr hashable hashable_support = // NOLINT - (MaxEnum)(PropertiesOfT<Profs>::hashable_support...); - - using properties = ConformanceProfile< - default_constructible_support, move_constructible_support, - copy_constructible_support, move_assignable_support, - copy_assignable_support, destructible_support, - equality_comparable_support, inequality_comparable_support, - less_than_comparable_support, less_equal_comparable_support, - greater_equal_comparable_support, greater_than_comparable_support, - swappable_support, hashable_support>; -}; - -// NOTE: We use this as opposed to a direct alias of CombineProfilesImpl so that -// when named aliases of CombineProfiles are created (such as in -// conformance_aliases.h), we only pay for the combination algorithm on the -// profiles that are actually used. -template <class... Profs> -struct CombineProfiles { - using profile_alias_of = CombineProfilesImpl<Profs...>; -}; - -template <> -struct CombineProfiles<> { - using properties = ConformanceProfile<>; -}; - -template <class Profile, class Tag> -struct StrongProfileTypedef { - using properties = PropertiesOfT<Profile>; -}; - -template <class T, class /*Enabler*/ = void> -struct IsProfileImpl : std::false_type {}; - -template <class T> -struct IsProfileImpl<T, absl::void_t<PropertiesOfT<T>>> : std::true_type {}; - -template <class T> -struct IsProfile : IsProfileImpl<T>::type {}; - -// A tag that describes which set of properties we will check when the user -// requires a strict match in conformance (as opposed to a loose match which -// allows more-refined support of any given operation). -// -// Currently only the RegularityDomain exists and it includes all operations -// that the conformance testing suite knows about. The intent is that if the -// suite is expanded to support extension, such as for checking conformance of -// concepts like Iterators or Containers, additional corresponding domains can -// be created. -struct RegularityDomain {}; - -} // namespace types_internal -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_TYPES_INTERNAL_CONFORMANCE_PROFILE_H_ |