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AK: Return Optional<T&> from HashMap<..., T>::get()

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This avoids a useless copy of the value, as most of the users (except
one) actually just need a reference to the value.
This commit is contained in:
Ali Mohammad Pur 2022-04-03 18:04:57 +04:30 committed by Andreas Kling
parent 1a74895680
commit 33e27c545e
2 changed files with 4 additions and 4 deletions
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4
AK/Traits.h
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@ -16,8 +16,8 @@ namespace AK {
template<typename T>
struct GenericTraits {
using PeekType = T;
using ConstPeekType = T;
using PeekType = T&;
using ConstPeekType = T const&;
static constexpr bool is_trivial() { return false; }
static constexpr bool equals(const T& a, const T& b) { return a == b; }
template<Concepts::HashCompatible<T> U>

4
Userland/Libraries/LibWeb/WebAssembly/WebAssemblyInstanceObject.cpp
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@ -34,7 +34,7 @@ void WebAssemblyInstanceObject::initialize(JS::GlobalObject& global_object)
for (auto& export_ : instance.exports()) {
export_.value().visit(
[&](Wasm::FunctionAddress const& address) {
auto object = cache.function_instances.get(address);
Optional<JS::FunctionObject*> object = cache.function_instances.get(address);
if (!object.has_value()) {
object = create_native_function(global_object, address, export_.name());
cache.function_instances.set(address, *object);
@ -42,7 +42,7 @@ void WebAssemblyInstanceObject::initialize(JS::GlobalObject& global_object)
m_exports_object->define_direct_property(export_.name(), *object, JS::default_attributes);
},
[&](Wasm::MemoryAddress const& address) {
auto object = cache.memory_instances.get(address);
Optional<WebAssemblyMemoryObject*> object = cache.memory_instances.get(address);
if (!object.has_value()) {
object = heap().allocate<Web::Bindings::WebAssemblyMemoryObject>(global_object, global_object, address);
cache.memory_instances.set(address, *object);