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LibJS: More properly implement scoping rules in bytecode codegen

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Now we emit CreateVariable and SetVariable with the appropriate
initialization/environment modes, much closer to the spec.
This makes a whole lot of things like let/const variables, function
and variable hoisting and some other things work :^)
This commit is contained in:
Ali Mohammad Pur 2022-02-12 19:48:45 +03:30 • committed by Linus Groh
parent c7e6b65fd2
commit 1bbfaf8627
12 changed files with 503 additions and 38 deletions
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Userland/Libraries/LibJS/Runtime/DeclarativeEnvironment.h
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@ -31,6 +31,7 @@ public:
virtual ThrowCompletionOr<bool> delete_binding(GlobalObject&, FlyString const& name) override;
void initialize_or_set_mutable_binding(Badge<ScopeNode>, GlobalObject& global_object, FlyString const& name, Value value);
ThrowCompletionOr<void> initialize_or_set_mutable_binding(GlobalObject& global_object, FlyString const& name, Value value);
// This is not a method defined in the spec! Do not use this in any LibJS (or other spec related) code.
[[nodiscard]] Vector<String> bindings() const;