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LibJS: Don't hoist functions under certain circumstances

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When a lexical declaration with the same name as a function exists,
the function is not hoisted (annex B).
This commit is contained in:
Hendi 2021-07-05 21:45:34 +02:00 • committed by Linus Groh
parent e0d26fff8c
commit 37c4fbb6ca
4 changed files with 50 additions and 9 deletions
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8
Userland/Libraries/LibJS/Parser.h
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@ -201,12 +201,18 @@ private:
Function,
Block,
};
struct HoistableDeclaration {
NonnullRefPtr<FunctionDeclaration> declaration;
NonnullRefPtr<Scope> scope; // where it is actually declared
};
Type type;
RefPtr<Scope> parent;
NonnullRefPtrVector<FunctionDeclaration> function_declarations;
NonnullRefPtrVector<FunctionDeclaration> hoisted_function_declarations;
Vector<HoistableDeclaration> hoisted_function_declarations;
HashTable<FlyString> lexical_declarations;
explicit Scope(Type, RefPtr<Scope>);
RefPtr<Scope> get_current_function_scope();