| // Copyright 2008 Google Inc. |
| // All Rights Reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Type utilities needed for implementing typed and type-parameterized |
| // tests. |
| |
| // IWYU pragma: private, include "gtest/gtest.h" |
| // IWYU pragma: friend gtest/.* |
| // IWYU pragma: friend gmock/.* |
| |
| #ifndef GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_ |
| #define GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_ |
| |
| #include "gtest/internal/gtest-port.h" |
| |
| // #ifdef __GNUC__ is too general here. It is possible to use gcc without using |
| // libstdc++ (which is where cxxabi.h comes from). |
| #if GTEST_HAS_CXXABI_H_ |
| #include <cxxabi.h> |
| #elif defined(__HP_aCC) |
| #include <acxx_demangle.h> |
| #endif // GTEST_HASH_CXXABI_H_ |
| |
| namespace testing { |
| namespace internal { |
| |
| // Canonicalizes a given name with respect to the Standard C++ Library. |
| // This handles removing the inline namespace within `std` that is |
| // used by various standard libraries (e.g., `std::__1`). Names outside |
| // of namespace std are returned unmodified. |
| inline std::string CanonicalizeForStdLibVersioning(std::string s) { |
| static const char prefix[] = "std::__"; |
| if (s.compare(0, strlen(prefix), prefix) == 0) { |
| std::string::size_type end = s.find("::", strlen(prefix)); |
| if (end != s.npos) { |
| // Erase everything between the initial `std` and the second `::`. |
| s.erase(strlen("std"), end - strlen("std")); |
| } |
| } |
| return s; |
| } |
| |
| #if GTEST_HAS_RTTI |
| // GetTypeName(const std::type_info&) returns a human-readable name of type T. |
| inline std::string GetTypeName(const std::type_info& type) { |
| const char* const name = type.name(); |
| #if GTEST_HAS_CXXABI_H_ || defined(__HP_aCC) |
| int status = 0; |
| // gcc's implementation of typeid(T).name() mangles the type name, |
| // so we have to demangle it. |
| #if GTEST_HAS_CXXABI_H_ |
| using abi::__cxa_demangle; |
| #endif // GTEST_HAS_CXXABI_H_ |
| char* const readable_name = __cxa_demangle(name, nullptr, nullptr, &status); |
| const std::string name_str(status == 0 ? readable_name : name); |
| free(readable_name); |
| return CanonicalizeForStdLibVersioning(name_str); |
| #else |
| return name; |
| #endif // GTEST_HAS_CXXABI_H_ || __HP_aCC |
| } |
| #endif // GTEST_HAS_RTTI |
| |
| // GetTypeName<T>() returns a human-readable name of type T if and only if |
| // RTTI is enabled, otherwise it returns a dummy type name. |
| // NB: This function is also used in Google Mock, so don't move it inside of |
| // the typed-test-only section below. |
| template <typename T> |
| std::string GetTypeName() { |
| #if GTEST_HAS_RTTI |
| return GetTypeName(typeid(T)); |
| #else |
| return "<type>"; |
| #endif // GTEST_HAS_RTTI |
| } |
| |
| // A unique type indicating an empty node |
| struct None {}; |
| |
| #define GTEST_TEMPLATE_ \ |
| template <typename T> \ |
| class |
| |
| // The template "selector" struct TemplateSel<Tmpl> is used to |
| // represent Tmpl, which must be a class template with one type |
| // parameter, as a type. TemplateSel<Tmpl>::Bind<T>::type is defined |
| // as the type Tmpl<T>. This allows us to actually instantiate the |
| // template "selected" by TemplateSel<Tmpl>. |
| // |
| // This trick is necessary for simulating typedef for class templates, |
| // which C++ doesn't support directly. |
| template <GTEST_TEMPLATE_ Tmpl> |
| struct TemplateSel { |
| template <typename T> |
| struct Bind { |
| typedef Tmpl<T> type; |
| }; |
| }; |
| |
| #define GTEST_BIND_(TmplSel, T) TmplSel::template Bind<T>::type |
| |
| template <GTEST_TEMPLATE_ Head_, GTEST_TEMPLATE_... Tail_> |
| struct Templates { |
| using Head = TemplateSel<Head_>; |
| using Tail = Templates<Tail_...>; |
| }; |
| |
| template <GTEST_TEMPLATE_ Head_> |
| struct Templates<Head_> { |
| using Head = TemplateSel<Head_>; |
| using Tail = None; |
| }; |
| |
| // Tuple-like type lists |
| template <typename Head_, typename... Tail_> |
| struct Types { |
| using Head = Head_; |
| using Tail = Types<Tail_...>; |
| }; |
| |
| template <typename Head_> |
| struct Types<Head_> { |
| using Head = Head_; |
| using Tail = None; |
| }; |
| |
| // Helper metafunctions to tell apart a single type from types |
| // generated by ::testing::Types |
| template <typename... Ts> |
| struct ProxyTypeList { |
| using type = Types<Ts...>; |
| }; |
| |
| template <typename> |
| struct is_proxy_type_list : std::false_type {}; |
| |
| template <typename... Ts> |
| struct is_proxy_type_list<ProxyTypeList<Ts...>> : std::true_type {}; |
| |
| // Generator which conditionally creates type lists. |
| // It recognizes if a requested type list should be created |
| // and prevents creating a new type list nested within another one. |
| template <typename T> |
| struct GenerateTypeList { |
| private: |
| using proxy = typename std::conditional<is_proxy_type_list<T>::value, T, |
| ProxyTypeList<T>>::type; |
| |
| public: |
| using type = typename proxy::type; |
| }; |
| |
| } // namespace internal |
| |
| template <typename... Ts> |
| using Types = internal::ProxyTypeList<Ts...>; |
| |
| } // namespace testing |
| |
| #endif // GOOGLETEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_ |