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Supporting nested format specs for ranges. (#2673)

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* Supporting nested format specs for ranges.

* I dedicate this commit to Eric Niebler.

* clang-format

* PR comments.

* throw -> FMT_THROW

* Need to map every element too.

* Clarifying uncvref_type

* Trying to add a workaround for MSVC.
This commit is contained in:
Barry Revzin
2022-01-08 09:48:26 -08:00
committed by GitHub
parent 0102101acc
commit 6e0f1399d7
2 changed files with 91 additions and 20 deletions
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test/ranges-test.cc
+3
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@@ -46,11 +46,13 @@ TEST(ranges_test, format_array_of_literals) {
TEST(ranges_test, format_vector) {
auto v = std::vector<int>{1, 2, 3, 5, 7, 11};
EXPECT_EQ(fmt::format("{}", v), "[1, 2, 3, 5, 7, 11]");
EXPECT_EQ(fmt::format("{::#x}", v), "[0x1, 0x2, 0x3, 0x5, 0x7, 0xb]");
}
TEST(ranges_test, format_vector2) {
auto v = std::vector<std::vector<int>>{{1, 2}, {3, 5}, {7, 11}};
EXPECT_EQ(fmt::format("{}", v), "[[1, 2], [3, 5], [7, 11]]");
EXPECT_EQ(fmt::format("{:::#x}", v), "[[0x1, 0x2], [0x3, 0x5], [0x7, 0xb]]");
}
TEST(ranges_test, format_map) {
@@ -296,6 +298,7 @@ static_assert(std::input_iterator<cpp20_only_range::iterator>);
TEST(ranges_test, join_sentinel) {
auto hello = zstring{"hello"};
EXPECT_EQ(fmt::format("{}", hello), "['h', 'e', 'l', 'l', 'o']");
EXPECT_EQ(fmt::format("{::}", hello), "[h, e, l, l, o]");
EXPECT_EQ(fmt::format("{}", fmt::join(hello, "_")), "h_e_l_l_o");
}