RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 17:58:12 +00:00
Code Issues Activity Actions

LibJS: Generate unwind chains for break in Bytecode

Browse source 
This uses a newly added instruction `ScheduleJump`
This instruction tells the finally proceeding it, that instead of
jumping to it's next block it should jump to the designated block.
This commit is contained in:
Hendiadyoin1 2022-11-25 16:15:34 +01:00 • committed by Linus Groh
parent 495ba53e46
commit f5376cb282
9 changed files with 123 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

7
Userland/Libraries/LibJS/Bytecode/Interpreter.h
View file

@ -59,6 +59,12 @@ public:
{
m_pending_jump = &label.block();
}
void schedule_jump(Label const& label)
{
m_scheduled_jump = &label.block();
VERIFY(unwind_contexts().last().finalizer);
jump(Label { *unwind_contexts().last().finalizer });
}
void do_return(Value return_value) { m_return_value = return_value; }
void enter_unwind_context(Optional<Label> handler_target, Optional<Label> finalizer_target);
@ -102,6 +108,7 @@ private:
Realm& m_realm;
Vector<Variant<NonnullOwnPtr<RegisterWindow>, RegisterWindow*>> m_register_windows;
Optional<BasicBlock const*> m_pending_jump;
BasicBlock const* m_scheduled_jump { nullptr };
Value m_return_value;
Handle<Value> m_saved_return_value;
Executable const* m_current_executable { nullptr };