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-rw-r--r--googletest/include/gtest/gtest-printers.h223
1 files changed, 34 insertions, 189 deletions
diff --git a/googletest/include/gtest/gtest-printers.h b/googletest/include/gtest/gtest-printers.h
index fad4e69..5467469 100644
--- a/googletest/include/gtest/gtest-printers.h
+++ b/googletest/include/gtest/gtest-printers.h
@@ -104,14 +104,12 @@
#include <ostream> // NOLINT
#include <sstream>
#include <string>
+#include <tuple>
+#include <type_traits>
#include <utility>
#include <vector>
-#include "gtest/internal/gtest-port.h"
#include "gtest/internal/gtest-internal.h"
-
-#if GTEST_HAS_STD_TUPLE_
-# include <tuple>
-#endif
+#include "gtest/internal/gtest-port.h"
#if GTEST_HAS_ABSL
#include "absl/strings/string_view.h"
@@ -643,95 +641,31 @@ void PrintTo(std::reference_wrapper<T> ref, ::std::ostream* os) {
PrintTo(ref.get(), os);
}
-#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
// Helper function for printing a tuple. T must be instantiated with
// a tuple type.
template <typename T>
-void PrintTupleTo(const T& t, ::std::ostream* os);
-#endif // GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
-
-#if GTEST_HAS_TR1_TUPLE
-// Overload for ::std::tr1::tuple. Needed for printing function arguments,
-// which are packed as tuples.
-
-// Overloaded PrintTo() for tuples of various arities. We support
-// tuples of up-to 10 fields. The following implementation works
-// regardless of whether tr1::tuple is implemented using the
-// non-standard variadic template feature or not.
-
-inline void PrintTo(const ::std::tr1::tuple<>& t, ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1>
-void PrintTo(const ::std::tr1::tuple<T1>& t, ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2>
-void PrintTo(const ::std::tr1::tuple<T1, T2>& t, ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3>& t, ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4>& t, ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5>& t,
- ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6>& t,
- ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7>& t,
- ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8>& t,
- ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9>
-void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9>& t,
- ::std::ostream* os) {
- PrintTupleTo(t, os);
-}
-
-template <typename T1, typename T2, typename T3, typename T4, typename T5,
- typename T6, typename T7, typename T8, typename T9, typename T10>
-void PrintTo(
- const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>& t,
- ::std::ostream* os) {
- PrintTupleTo(t, os);
+void PrintTupleTo(const T&, std::integral_constant<size_t, 0>,
+ ::std::ostream*) {}
+
+template <typename T, size_t I>
+void PrintTupleTo(const T& t, std::integral_constant<size_t, I>,
+ ::std::ostream* os) {
+ PrintTupleTo(t, std::integral_constant<size_t, I - 1>(), os);
+ GTEST_INTENTIONAL_CONST_COND_PUSH_()
+ if (I > 1) {
+ GTEST_INTENTIONAL_CONST_COND_POP_()
+ *os << ", ";
+ }
+ UniversalPrinter<typename std::tuple_element<I - 1, T>::type>::Print(
+ std::get<I - 1>(t), os);
}
-#endif // GTEST_HAS_TR1_TUPLE
-#if GTEST_HAS_STD_TUPLE_
template <typename... Types>
void PrintTo(const ::std::tuple<Types...>& t, ::std::ostream* os) {
- PrintTupleTo(t, os);
+ *os << "(";
+ PrintTupleTo(t, std::integral_constant<size_t, sizeof...(Types)>(), os);
+ *os << ")";
}
-#endif // GTEST_HAS_STD_TUPLE_
// Overload for std::pair.
template <typename T1, typename T2>
@@ -962,109 +896,20 @@ void UniversalPrint(const T& value, ::std::ostream* os) {
typedef ::std::vector< ::std::string> Strings;
-// TuplePolicy<TupleT> must provide:
-// - tuple_size
-// size of tuple TupleT.
-// - get<size_t I>(const TupleT& t)
-// static function extracting element I of tuple TupleT.
-// - tuple_element<size_t I>::type
-// type of element I of tuple TupleT.
-template <typename TupleT>
-struct TuplePolicy;
-
-#if GTEST_HAS_TR1_TUPLE
-template <typename TupleT>
-struct TuplePolicy {
- typedef TupleT Tuple;
- static const size_t tuple_size = ::std::tr1::tuple_size<Tuple>::value;
-
- template <size_t I>
- struct tuple_element : ::std::tr1::tuple_element<static_cast<int>(I), Tuple> {
- };
-
- template <size_t I>
- static typename AddReference<const typename ::std::tr1::tuple_element<
- static_cast<int>(I), Tuple>::type>::type
- get(const Tuple& tuple) {
- return ::std::tr1::get<I>(tuple);
- }
-};
-template <typename TupleT>
-const size_t TuplePolicy<TupleT>::tuple_size;
-#endif // GTEST_HAS_TR1_TUPLE
-
-#if GTEST_HAS_STD_TUPLE_
-template <typename... Types>
-struct TuplePolicy< ::std::tuple<Types...> > {
- typedef ::std::tuple<Types...> Tuple;
- static const size_t tuple_size = ::std::tuple_size<Tuple>::value;
-
- template <size_t I>
- struct tuple_element : ::std::tuple_element<I, Tuple> {};
-
- template <size_t I>
- static const typename ::std::tuple_element<I, Tuple>::type& get(
- const Tuple& tuple) {
- return ::std::get<I>(tuple);
- }
-};
-template <typename... Types>
-const size_t TuplePolicy< ::std::tuple<Types...> >::tuple_size;
-#endif // GTEST_HAS_STD_TUPLE_
-
-#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
-// This helper template allows PrintTo() for tuples and
-// UniversalTersePrintTupleFieldsToStrings() to be defined by
-// induction on the number of tuple fields. The idea is that
-// TuplePrefixPrinter<N>::PrintPrefixTo(t, os) prints the first N
-// fields in tuple t, and can be defined in terms of
-// TuplePrefixPrinter<N - 1>.
-//
-// The inductive case.
-template <size_t N>
-struct TuplePrefixPrinter {
- // Prints the first N fields of a tuple.
- template <typename Tuple>
- static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
- TuplePrefixPrinter<N - 1>::PrintPrefixTo(t, os);
- GTEST_INTENTIONAL_CONST_COND_PUSH_()
- if (N > 1) {
- GTEST_INTENTIONAL_CONST_COND_POP_()
- *os << ", ";
- }
- UniversalPrinter<
- typename TuplePolicy<Tuple>::template tuple_element<N - 1>::type>
- ::Print(TuplePolicy<Tuple>::template get<N - 1>(t), os);
- }
-
// Tersely prints the first N fields of a tuple to a string vector,
// one element for each field.
- template <typename Tuple>
- static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {
- TuplePrefixPrinter<N - 1>::TersePrintPrefixToStrings(t, strings);
- ::std::stringstream ss;
- UniversalTersePrint(TuplePolicy<Tuple>::template get<N - 1>(t), &ss);
- strings->push_back(ss.str());
- }
-};
-
-// Base case.
-template <>
-struct TuplePrefixPrinter<0> {
- template <typename Tuple>
- static void PrintPrefixTo(const Tuple&, ::std::ostream*) {}
-
- template <typename Tuple>
- static void TersePrintPrefixToStrings(const Tuple&, Strings*) {}
-};
-
-// Helper function for printing a tuple.
-// Tuple must be either std::tr1::tuple or std::tuple type.
template <typename Tuple>
-void PrintTupleTo(const Tuple& t, ::std::ostream* os) {
- *os << "(";
- TuplePrefixPrinter<TuplePolicy<Tuple>::tuple_size>::PrintPrefixTo(t, os);
- *os << ")";
+void TersePrintPrefixToStrings(const Tuple&, std::integral_constant<size_t, 0>,
+ Strings*) {}
+template <typename Tuple, size_t I>
+void TersePrintPrefixToStrings(const Tuple& t,
+ std::integral_constant<size_t, I>,
+ Strings* strings) {
+ TersePrintPrefixToStrings(t, std::integral_constant<size_t, I - 1>(),
+ strings);
+ ::std::stringstream ss;
+ UniversalTersePrint(std::get<I - 1>(t), &ss);
+ strings->push_back(ss.str());
}
// Prints the fields of a tuple tersely to a string vector, one
@@ -1073,11 +918,11 @@ void PrintTupleTo(const Tuple& t, ::std::ostream* os) {
template <typename Tuple>
Strings UniversalTersePrintTupleFieldsToStrings(const Tuple& value) {
Strings result;
- TuplePrefixPrinter<TuplePolicy<Tuple>::tuple_size>::
- TersePrintPrefixToStrings(value, &result);
+ TersePrintPrefixToStrings(
+ value, std::integral_constant<size_t, std::tuple_size<Tuple>::value>(),
+ &result);
return result;
}
-#endif // GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
} // namespace internal