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- // 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.
- // GOOGLETEST_CM0001 DO NOT DELETE
- #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_
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