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LibJS: Add a way to attach custom data to a JS::VM instance

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This will be used by LibWeb to attach web engine specific stuff that
LibJS doesn't need to know about.
This commit is contained in:
Andreas Kling 2021-09-08 22:58:36 +02:00
parent 9661d15fe2
commit b76456f0ed
2 changed files with 18 additions and 5 deletions
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11
Userland/Libraries/LibJS/Runtime/VM.cpp
View file

@ -28,13 +28,14 @@
namespace JS {
NonnullRefPtr<VM> VM::create()
NonnullRefPtr<VM> VM::create(OwnPtr<CustomData> custom_data)
{
return adopt_ref(*new VM);
return adopt_ref(*new VM(move(custom_data)));
}
VM::VM()
VM::VM(OwnPtr<CustomData> custom_data)
: m_heap(*this)
, m_custom_data(move(custom_data))
{
m_empty_string = m_heap.allocate_without_global_object<PrimitiveString>(String::empty());
for (size_t i = 0; i < 128; ++i) {
@ -773,4 +774,8 @@ void VM::dump_environment_chain() const
}
}
VM::CustomData::~CustomData()
{
}
}

12
Userland/Libraries/LibJS/Runtime/VM.h
View file

@ -61,7 +61,11 @@ struct ExecutionContext {
class VM : public RefCounted<VM> {
public:
static NonnullRefPtr<VM> create();
struct CustomData {
virtual ~CustomData();
};
static NonnullRefPtr<VM> create(OwnPtr<CustomData> = {});
~VM();
Heap& heap() { return m_heap; }
@ -272,8 +276,10 @@ public:
void initialize_instance_elements(Object& object, FunctionObject& constructor);
CustomData* custom_data() { return m_custom_data; }
private:
VM();
explicit VM(OwnPtr<CustomData>);
void ordinary_call_bind_this(FunctionObject&, ExecutionContext&, Value this_argument);
@ -310,6 +316,8 @@ private:
bool m_underscore_is_last_value { false };
u32 m_execution_generation { 0 };
OwnPtr<CustomData> m_custom_data;
};
template<>