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LibJS: Implement basic for..in and for..of loops

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This commit is contained in:
Linus Groh 2020-04-21 19:21:26 +01:00 • committed by Andreas Kling
parent c378a1c730
commit 07af2e6b2c
8 changed files with 372 additions and 90 deletions
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53
Libraries/LibJS/AST.h
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@ -341,6 +341,54 @@ private:
NonnullRefPtr<Statement> m_body;
};
class ForInStatement : public Statement {
public:
ForInStatement(NonnullRefPtr<ASTNode> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
: m_lhs(move(lhs))
, m_rhs(move(rhs))
, m_body(move(body))
{
}
const ASTNode& lhs() const { return *m_lhs; }
const Expression& rhs() const { return *m_rhs; }
const Statement& body() const { return *m_body; }
virtual Value execute(Interpreter&) const override;
virtual void dump(int indent) const override;
private:
virtual const char* class_name() const override { return "ForInStatement"; }
NonnullRefPtr<ASTNode> m_lhs;
NonnullRefPtr<Expression> m_rhs;
NonnullRefPtr<Statement> m_body;
};
class ForOfStatement : public Statement {
public:
ForOfStatement(NonnullRefPtr<ASTNode> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
: m_lhs(move(lhs))
, m_rhs(move(rhs))
, m_body(move(body))
{
}
const ASTNode& lhs() const { return *m_lhs; }
const Expression& rhs() const { return *m_rhs; }
const Statement& body() const { return *m_body; }
virtual Value execute(Interpreter&) const override;
virtual void dump(int indent) const override;
private:
virtual const char* class_name() const override { return "ForOfStatement"; }
NonnullRefPtr<ASTNode> m_lhs;
NonnullRefPtr<Expression> m_rhs;
NonnullRefPtr<Statement> m_body;
};
enum class BinaryOp {
Addition,
Subtraction,
@ -678,6 +726,11 @@ enum class DeclarationKind {
class VariableDeclarator final : public ASTNode {
public:
VariableDeclarator(NonnullRefPtr<Identifier> id)
: m_id(move(id))
{
}
VariableDeclarator(NonnullRefPtr<Identifier> id, RefPtr<Expression> init)
: m_id(move(id))
, m_init(move(init))