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Fix compilation error for ranges with ADL begin/end (#2807)

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* Use `range_begin`/`end` to get formatted range iterators

* Add test for adl `begin`/`end`

* Apply clang-format

* Simplify tests
This commit is contained in:
Riccardo Brugo 2022-03-11 20:36:39 +01:00 committed by GitHub
parent f6bcb25e16
commit a8fe8becf4
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2 changed files with 21 additions and 2 deletions
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4
include/fmt/ranges.h
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@ -402,8 +402,8 @@ struct formatter<
auto out = ctx.out();
*out++ = prefix;
int i = 0;
auto it = std::begin(range);
auto end = std::end(range);
auto it = detail::range_begin(range);
auto end = detail::range_end(range);
for (; it != end; ++it) {
if (i > 0) out = detail::write_delimiter(out);
if (custom_specs_) {

19
test/ranges-test.cc
View File

@ -65,6 +65,25 @@ TEST(ranges_test, format_set) {
"{\"one\", \"two\"}");
}
namespace adl {
struct box {
int value;
};
auto begin(const box& b) -> const int* {
return &b.value;
}
auto end(const box& b) -> const int* {
return &b.value + 1;
}
} // namespace adl
TEST(ranges_test, format_adl_begin_end) {
auto b = adl::box{42};
EXPECT_EQ(fmt::format("{}", b), "[42]");
}
TEST(ranges_test, format_pair) {
auto p = std::pair<int, float>(42, 1.5f);
EXPECT_EQ(fmt::format("{}", p), "(42, 1.5)");