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Fix fallback to runtime API from compile-time API (#2143)

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* fix fallback to the runtime API, add FMT_ENABLE_FALLBACK_TO_RUNTIME_API define, add test

* remove `FMT_ENABLE_FALLBACK_TO_RUNTIME_API`

* pass format string to format_to() inside format_to_n() in compile-time API

instead of compiling it inside format_to_n(), to eliminate code duplication
This commit is contained in:
Alexey Ochapov
2021-03-04 18:20:57 +03:00
committed by GitHub
parent d8b9254301
commit 684b5b0e40
2 changed files with 44 additions and 12 deletions
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17
test/compile-test.cc
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@ -229,6 +229,23 @@ TEST(CompileTest, TextAndArg) {
EXPECT_EQ("42!", fmt::format(FMT_COMPILE("{}!"), 42));
}
TEST(CompileTest, UnknownFormatFallback) {
EXPECT_EQ(" 42 ",
fmt::format(FMT_COMPILE("{name:^4}"), fmt::arg("name", 42)));
std::vector<char> v;
fmt::format_to(std::back_inserter(v), FMT_COMPILE("{name:^4}"),
fmt::arg("name", 42));
EXPECT_EQ(" 42 ", fmt::string_view(v.data(), v.size()));
char buffer[4];
auto result = fmt::format_to_n(buffer, 4, FMT_COMPILE("{name:^5}"),
fmt::arg("name", 42));
EXPECT_EQ(5u, result.size);
EXPECT_EQ(buffer + 4, result.out);
EXPECT_EQ(" 42 ", fmt::string_view(buffer, 4));
}
TEST(CompileTest, Empty) { EXPECT_EQ("", fmt::format(FMT_COMPILE(""))); }
#endif