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LibJS: Add using declaration support, RAII like operation in js
In this patch only top level and not the more complicated for loop using statements are supported. Also, as noted in the latest meeting of tc39 async parts of the spec are not stage 3 thus not included.
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15 changed files with 861 additions and 68 deletions
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@ -1719,6 +1719,27 @@ private:
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NonnullRefPtrVector<VariableDeclarator> m_declarations;
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};
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class UsingDeclaration final : public Declaration {
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public:
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UsingDeclaration(SourceRange source_range, NonnullRefPtrVector<VariableDeclarator> declarations)
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: Declaration(move(source_range))
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, m_declarations(move(declarations))
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{
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}
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virtual Completion execute(Interpreter&) const override;
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virtual void dump(int indent) const override;
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virtual ThrowCompletionOr<void> for_each_bound_name(ThrowCompletionOrVoidCallback<DeprecatedFlyString const&>&& callback) const override;
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virtual bool is_constant_declaration() const override { return true; };
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virtual bool is_lexical_declaration() const override { return true; }
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private:
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NonnullRefPtrVector<VariableDeclarator> m_declarations;
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};
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class ObjectProperty final : public ASTNode {
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public:
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enum class Type : u8 {
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