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Make fmt::appender implement std::output_iterator concept (#4093)

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Signed-off-by: Vladislav Shchapov <vladislav@shchapov.ru>
This commit is contained in:
Vladislav Shchapov
2024-07-29 21:18:20 +05:00
committed by GitHub
parent e23fb6a8b4
commit aff640c32f
3 changed files with 9 additions and 7 deletions
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1
include/fmt/format.h
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@@ -110,6 +110,7 @@ namespace std {
template <> struct iterator_traits<fmt::appender> {
using iterator_category = output_iterator_tag;
using value_type = char;
using difference_type = ptrdiff_t;
};
} // namespace std

8
test/base-test.cc
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@@ -93,7 +93,7 @@ TEST(string_view_test, compare) {
}
TEST(base_test, is_locking) {
EXPECT_FALSE(fmt::detail::is_locking<const char (&)[3]>());
EXPECT_FALSE(fmt::detail::is_locking<const char(&)[3]>());
}
TEST(base_test, is_output_iterator) {
@@ -116,12 +116,6 @@ TEST(base_test, is_back_insert_iterator) {
std::front_insert_iterator<std::string>>::value);
}
TEST(base_test, buffer_appender) {
#ifdef __cpp_lib_ranges
EXPECT_TRUE((std::output_iterator<fmt::appender, char>));
#endif
}
#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 470
TEST(buffer_test, noncopyable) {
EXPECT_FALSE(std::is_copy_constructible<buffer<char>>::value);

7
test/format-test.cc
View File

@@ -26,6 +26,9 @@
#include <string> // std::string
#include <thread> // std::thread
#include <type_traits> // std::is_default_constructible
#if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE(<version>)
# include <version>
#endif
#include "gtest-extra.h"
#include "mock-allocator.h"
@@ -42,6 +45,10 @@ using fmt::detail::uint128_fallback;
using testing::Return;
using testing::StrictMock;
#ifdef __cpp_lib_concepts
static_assert(std::output_iterator<fmt::appender, char>);
#endif
enum { buffer_size = 256 };
TEST(uint128_test, ctor) {