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Annotate fmt::format and fmt::formatted_size as [[nodiscard]]

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This prevents accidentally writing fmt::format when fmt::print was
intended. Other than running tests, there's not a good use case for
discarding the formatted output.
This commit is contained in:
Florin Iucha
2021-11-24 17:09:41 -05:00
committed by Victor Zverovich
parent 5abe9e8266
commit 491ba2dda5
7 changed files with 196 additions and 185 deletions
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18
test/enforce-checks-test.cc
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@ -17,12 +17,12 @@
// Exercise the API to verify that everything we expect to can compile.
void test_format_api() {
fmt::format(FMT_STRING("{}"), 42);
fmt::format(FMT_STRING(L"{}"), 42);
fmt::format(FMT_STRING("noop"));
(void)fmt::format(FMT_STRING("{}"), 42);
(void)fmt::format(FMT_STRING(L"{}"), 42);
(void)fmt::format(FMT_STRING("noop"));
fmt::to_string(42);
fmt::to_wstring(42);
(void)fmt::to_string(42);
(void)fmt::to_wstring(42);
std::vector<char> out;
fmt::format_to(std::back_inserter(out), FMT_STRING("{}"), 42);
@ -35,13 +35,13 @@ void test_format_api() {
}
void test_chrono() {
fmt::format(FMT_STRING("{}"), std::chrono::seconds(42));
fmt::format(FMT_STRING(L"{}"), std::chrono::seconds(42));
(void)fmt::format(FMT_STRING("{}"), std::chrono::seconds(42));
(void)fmt::format(FMT_STRING(L"{}"), std::chrono::seconds(42));
}
void test_text_style() {
fmt::print(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"), "rgb(255,20,30)");
fmt::format(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"), "rgb(255,20,30)");
(void)fmt::format(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"), "rgb(255,20,30)");
fmt::text_style ts = fg(fmt::rgb(255, 20, 30));
std::string out;
@ -51,7 +51,7 @@ void test_text_style() {
void test_range() {
std::vector<char> hello = {'h', 'e', 'l', 'l', 'o'};
fmt::format(FMT_STRING("{}"), hello);
(void)fmt::format(FMT_STRING("{}"), hello);
}
int main() {