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Optimize small string concatenation

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This commit is contained in:
Victor Zverovich 2020-05-19 10:54:22 -07:00
parent 8d78045e7c
commit 2aa2526f64
1 changed files with 6 additions and 1 deletions
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7
include/fmt/format.h
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@ -2513,7 +2513,12 @@ FMT_CONSTEXPR void parse_format_string(basic_string_view<Char> format_str,
Handler&& handler) { Handler&& handler) {
struct writer { struct writer {
FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) { FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) {
if (begin == end) return; if (begin + 1 >= end) {
if (begin == end) return;
if (*begin == '}')
return handler_.on_error("unmatched '}' in format string");
return handler_.on_text(begin, begin + 1);
}
for (;;) { for (;;) {
const Char* p = nullptr; const Char* p = nullptr;
if (!find<IS_CONSTEXPR>(begin, end, '}', p)) if (!find<IS_CONSTEXPR>(begin, end, '}', p))