[libcxx-commits] [libcxx] [libc++][test] Move the SFINAE test for return types of `quoted` to `libcxx/test/libcxx/` (PR #157026)
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Thu Sep 4 23:41:57 PDT 2025
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- libcxx/test/libcxx/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp
``````````
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``````````diff
diff --git a/libcxx/test/libcxx/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp b/libcxx/test/libcxx/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp
index 35aa54b17..8d9c1168b 100644
--- a/libcxx/test/libcxx/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp
+++ b/libcxx/test/libcxx/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp
@@ -26,44 +26,47 @@
#include "test_allocator.h"
#include "test_macros.h"
-template<class IS, class Q>
-decltype(std::declval<IS>() >> std::declval<Q>(), std::true_type())
-has_rightshift_impl(int) { return std::true_type(); }
+template <class IS, class Q>
+decltype(std::declval<IS>() >> std::declval<Q>(), std::true_type()) has_rightshift_impl(int) {
+ return std::true_type();
+}
-template<class IS, class Q>
-std::false_type
-has_rightshift_impl(long) { return std::false_type(); }
+template <class IS, class Q>
+std::false_type has_rightshift_impl(long) {
+ return std::false_type();
+}
-template<class IS, class Q>
+template <class IS, class Q>
struct HasRightShift : decltype(has_rightshift_impl<IS, Q>(0)) {};
-template<class OS, class Q>
-decltype(std::declval<OS>() << std::declval<Q>(), std::true_type())
-has_leftshift_impl(int) { return std::true_type(); }
+template <class OS, class Q>
+decltype(std::declval<OS>() << std::declval<Q>(), std::true_type()) has_leftshift_impl(int) {
+ return std::true_type();
+}
-template<class OS, class Q>
-std::false_type
-has_leftshift_impl(long) { return std::false_type(); }
+template <class OS, class Q>
+std::false_type has_leftshift_impl(long) {
+ return std::false_type();
+}
-template<class OS, class Q>
+template <class OS, class Q>
struct HasLeftShift : decltype(has_leftshift_impl<OS, Q>(0)) {};
-template<class CharT>
+template <class CharT>
struct FakeCharTraits : std::char_traits<CharT> {};
-void test_string_literal()
-{
+void test_string_literal() {
using Q = decltype(std::quoted("hello"));
- static_assert( HasLeftShift<std::ostream&, Q>::value, "");
+ static_assert(HasLeftShift<std::ostream&, Q>::value, "");
static_assert(!HasRightShift<std::istream&, Q>::value, "");
- static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, Q>::value, "");
+ static_assert(HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, Q>::value, "");
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, Q>::value, "");
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
using WQ = decltype(std::quoted(L"hello"));
- static_assert( HasLeftShift<std::wostream&, WQ>::value, "");
+ static_assert(HasLeftShift<std::wostream&, WQ>::value, "");
static_assert(!HasRightShift<std::wistream&, WQ>::value, "");
- static_assert( HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
+ static_assert(HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
static_assert(!HasLeftShift<std::ostream&, WQ>::value, "");
@@ -71,15 +74,14 @@ void test_string_literal()
#endif // TEST_HAS_NO_WIDE_CHARACTERS
}
-void test_std_string()
-{
- std::string s = "hello";
+void test_std_string() {
+ std::string s = "hello";
const auto& cs = s;
- using Q = decltype(std::quoted(s));
- using CQ = decltype(std::quoted(cs));
- static_assert( HasLeftShift<std::ostream&, Q>::value, "");
- static_assert( HasRightShift<std::istream&, Q>::value, "");
- static_assert( HasLeftShift<std::ostream&, CQ>::value, "");
+ using Q = decltype(std::quoted(s));
+ using CQ = decltype(std::quoted(cs));
+ static_assert(HasLeftShift<std::ostream&, Q>::value, "");
+ static_assert(HasRightShift<std::istream&, Q>::value, "");
+ static_assert(HasLeftShift<std::ostream&, CQ>::value, "");
static_assert(!HasRightShift<std::istream&, CQ>::value, "");
static_assert(!HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, Q>::value, "");
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, Q>::value, "");
@@ -87,26 +89,26 @@ void test_std_string()
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQ>::value, "");
std::basic_string<char, FakeCharTraits<char>, test_allocator<char>> st = "hello";
- const auto& cst = st;
- using QT = decltype(std::quoted(st));
- using CQT = decltype(std::quoted(cst));
+ const auto& cst = st;
+ using QT = decltype(std::quoted(st));
+ using CQT = decltype(std::quoted(cst));
static_assert(!HasLeftShift<std::ostream&, QT>::value, "");
static_assert(!HasRightShift<std::istream&, QT>::value, "");
static_assert(!HasLeftShift<std::ostream&, CQT>::value, "");
static_assert(!HasRightShift<std::istream&, CQT>::value, "");
- static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, QT>::value, "");
- static_assert( HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, QT>::value, "");
- static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQT>::value, "");
+ static_assert(HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, QT>::value, "");
+ static_assert(HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, QT>::value, "");
+ static_assert(HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQT>::value, "");
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQT>::value, "");
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
std::wstring ws = L"hello";
const auto& cws = ws;
- using WQ = decltype(std::quoted(ws));
- using CWQ = decltype(std::quoted(cws));
- static_assert( HasLeftShift<std::wostream&, WQ>::value, "");
- static_assert( HasRightShift<std::wistream&, WQ>::value, "");
- static_assert( HasLeftShift<std::wostream&, CWQ>::value, "");
+ using WQ = decltype(std::quoted(ws));
+ using CWQ = decltype(std::quoted(cws));
+ static_assert(HasLeftShift<std::wostream&, WQ>::value, "");
+ static_assert(HasRightShift<std::wistream&, WQ>::value, "");
+ static_assert(HasLeftShift<std::wostream&, CWQ>::value, "");
static_assert(!HasRightShift<std::wistream&, CWQ>::value, "");
static_assert(!HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
@@ -118,15 +120,14 @@ void test_std_string()
#endif // TEST_HAS_NO_WIDE_CHARACTERS
}
-void test_std_string_view()
-{
+void test_std_string_view() {
std::string_view s = "hello";
- const auto& cs = s;
- using Q = decltype(std::quoted(s));
- using CQ = decltype(std::quoted(cs));
- static_assert( HasLeftShift<std::ostream&, Q>::value, "");
+ const auto& cs = s;
+ using Q = decltype(std::quoted(s));
+ using CQ = decltype(std::quoted(cs));
+ static_assert(HasLeftShift<std::ostream&, Q>::value, "");
static_assert(!HasRightShift<std::istream&, Q>::value, "");
- static_assert( HasLeftShift<std::ostream&, CQ>::value, "");
+ static_assert(HasLeftShift<std::ostream&, CQ>::value, "");
static_assert(!HasRightShift<std::istream&, CQ>::value, "");
static_assert(!HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, Q>::value, "");
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, Q>::value, "");
@@ -134,26 +135,26 @@ void test_std_string_view()
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQ>::value, "");
std::basic_string_view<char, FakeCharTraits<char>> st = "hello";
- const auto& cst = st;
- using QT = decltype(std::quoted(st));
- using CQT = decltype(std::quoted(cst));
+ const auto& cst = st;
+ using QT = decltype(std::quoted(st));
+ using CQT = decltype(std::quoted(cst));
static_assert(!HasLeftShift<std::ostream&, QT>::value, "");
static_assert(!HasRightShift<std::istream&, QT>::value, "");
static_assert(!HasLeftShift<std::ostream&, CQT>::value, "");
static_assert(!HasRightShift<std::istream&, CQT>::value, "");
- static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, QT>::value, "");
+ static_assert(HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, QT>::value, "");
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, QT>::value, "");
- static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQT>::value, "");
+ static_assert(HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQT>::value, "");
static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQT>::value, "");
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
std::wstring_view ws = L"hello";
- const auto& cws = ws;
- using WQ = decltype(std::quoted(ws));
- using CWQ = decltype(std::quoted(cws));
- static_assert( HasLeftShift<std::wostream&, WQ>::value, "");
+ const auto& cws = ws;
+ using WQ = decltype(std::quoted(ws));
+ using CWQ = decltype(std::quoted(cws));
+ static_assert(HasLeftShift<std::wostream&, WQ>::value, "");
static_assert(!HasRightShift<std::wistream&, WQ>::value, "");
- static_assert( HasLeftShift<std::wostream&, CWQ>::value, "");
+ static_assert(HasLeftShift<std::wostream&, CWQ>::value, "");
static_assert(!HasRightShift<std::wistream&, CWQ>::value, "");
static_assert(!HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
``````````
</details>
https://github.com/llvm/llvm-project/pull/157026
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