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LibRegex: Avoid making unnecessary string copies

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This commit is contained in:
Gunnar Beutner 2021-06-13 22:30:02 +02:00 • committed by Ali Mohammad Pur
parent 281f39073d
commit 214410b397
1 changed files with 6 additions and 8 deletions
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14
Userland/Libraries/LibRegex/RegexByteCode.cpp
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@ -528,15 +528,13 @@ ALWAYS_INLINE bool OpCode_Compare::compare_string(const MatchInput& input, Match
auto str_view1 = StringView(str, length);
auto str_view2 = StringView(&input.view.u8view()[state.string_position], length);
String str1, str2;
if (input.regex_options & AllFlags::Insensitive) {
str1 = str_view1.to_string().to_lowercase();
str2 = str_view2.to_string().to_lowercase();
str_view1 = str1.view();
str_view2 = str2.view();
}
bool string_equals;
if (input.regex_options & AllFlags::Insensitive)
string_equals = str_view1.equals_ignoring_case(str_view2);
else
string_equals = str_view1 == str_view2;
if (str_view1 == str_view2) {
if (string_equals) {
state.string_position += length;
if (length == 0)
had_zero_length_match = true;