mirrors/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-04-21 12:05:15 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

LibJS: Avoid StringImpl refcount churn when hashing StringOrSymbol

Browse source 
Add a StringOrSymbol::hash() helper function so we can compute the hash
without having to construct a temporary String.
This commit is contained in:
Andreas Kling 2020-10-04 17:27:38 +02:00
parent cfd141b4f9
commit d542049596
Notes: sideshowbarker 2024-07-19 02:03:46 +09:00
1 changed files with 8 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
Libraries/LibJS/Runtime/StringOrSymbol.h
View file

@ -135,6 +135,13 @@ public:
return *this;
}
unsigned hash() const
{
if (is_string())
return static_cast<const StringImpl*>(m_ptr)->hash();
return ptr_hash(as_symbol());
}
private:
ALWAYS_INLINE u64 bits() const
{
@ -155,10 +162,6 @@ template<>
struct AK::Traits<JS::StringOrSymbol> : public GenericTraits<JS::StringOrSymbol> {
static unsigned hash(const JS::StringOrSymbol& key)
{
if (key.is_string())
return key.as_string().hash();
if (key.is_symbol())
return ptr_hash(key.as_symbol());
return 0;
return key.hash();
}
};