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LibJS: Add PrimitiveString::is_empty() and use it

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If we're only interested in whether the string is empty, we can skip the
conversion from UTF-16 to UTF-8.
This commit is contained in:
Andreas Kling 2022-07-17 21:08:53 +02:00
parent 32480fbeb9
commit f4c68eb0a4
3 changed files with 12 additions and 1 deletions
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9
Userland/Libraries/LibJS/Runtime/PrimitiveString.cpp
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@ -32,6 +32,15 @@ PrimitiveString::~PrimitiveString()
vm().string_cache().remove(m_utf8_string);
}
bool PrimitiveString::is_empty() const
{
if (m_has_utf16_string)
return m_utf16_string.is_empty();
if (m_has_utf8_string)
return m_utf8_string.is_empty();
VERIFY_NOT_REACHED();
}
String const& PrimitiveString::string() const
{
if (!m_has_utf8_string) {