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LibJS: Remove UndefinedLiteral, add undefined to global object

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There is no such thing as a "undefined literal" in JS - undefined is
just a property on the global object with a value of undefined.
This is pretty similar to NaN.

var undefined = "foo"; is a perfectly fine AssignmentExpression :^)
This commit is contained in:
Linus Groh 2020-04-02 22:08:14 +01:00 • committed by Andreas Kling
parent 543c6e00db
commit 2636cac6e4
6 changed files with 1 additions and 30 deletions
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13
Libraries/LibJS/AST.h
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@ -440,19 +440,6 @@ private:
virtual const char* class_name() const override { return "NullLiteral"; }
};
class UndefinedLiteral final : public Literal {
public:
explicit UndefinedLiteral()
{
}
virtual Value execute(Interpreter&) const override;
virtual void dump(int indent) const override;
private:
virtual const char* class_name() const override { return "UndefinedLiteral"; }
};
class Identifier final : public Expression {
public:
explicit Identifier(const FlyString& string)