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LibJS: Generate bytecode for do...while statements :^)

This was quite straightforward using the same label/jump machinery that
we added for while statements.

The main addition here is a new JumpIfTrue bytecode instruction.
This commit is contained in:
Andreas Kling 2021-06-04 12:20:44 +02:00
parent bd1a5e282a
commit f2863b5a89
4 changed files with 45 additions and 0 deletions

View file

@ -193,4 +193,23 @@ private:
Optional<Label> m_target;
};
class JumpIfTrue final : public Instruction {
public:
explicit JumpIfTrue(Register result, Optional<Label> target = {})
: m_result(result)
, m_target(move(target))
{
}
void set_target(Optional<Label> target) { m_target = move(target); }
virtual ~JumpIfTrue() override { }
virtual void execute(Bytecode::Interpreter&) const override;
virtual String to_string() const override;
private:
Register m_result;
Optional<Label> m_target;
};
}