OpCode::JumpIfFalse => todo!(),

    /// (Shape B) jumps (B) instructions ahead if (A == 0)
    /// and jumps (B) instructions back if (A == 1)
    /// in the case that the item it popped from the stack is false (#f)
    JumpIfFalse,

            12 => Ok(Self::JumpIfFalse),

            OpCode::JumpIfFalse => Self {
                op_code,
                arguments: OpArguments::parse_b(n),
            },