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LibJS: Bring function environment records closer to the spec
This patch adds FunctionEnvironmentRecord as a subclass of the existing DeclarativeEnvironmentRecord. Things that are specific to function environment records move into there, simplifying the base. Most of the abstract operations related to function environment records are rewritten to match the spec exactly. I also had to implement GetThisEnvironment() and GetSuperConstructor() to keep tests working after the changes, so that's nice as well. :^)
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28 changed files with 228 additions and 159 deletions
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@ -109,6 +109,7 @@ public:
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virtual bool is_proxy_object() const { return false; }
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virtual bool is_native_function() const { return false; }
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virtual bool is_declarative_environment_record() const { return false; }
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virtual bool is_function_environment_record() const { return false; }
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// B.3.7 The [[IsHTMLDDA]] Internal Slot, https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot
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virtual bool is_htmldda() const { return false; }
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