use std::fmt::{Debug, Formatter};
use std::fmt;

use crate::asm::data::{DataDisp, Mask, Rd, WrData};

/// Data destination argument (read-write)
#[derive(Clone, Copy, Eq, PartialEq)]
pub struct Wr(WrData, Mask);

impl Wr {
    pub fn new(dst: WrData) -> Self {
        Wr(dst, Mask::default())
    }
    pub fn d(self) -> WrData {
        self.0
    }
    pub fn mask(self) -> Mask {
        self.1
    }
    pub fn as_rd(&self) -> Rd {
        Rd(self.0.into(), self.1)
    }

    pub fn discard() -> Wr {
        Wr(WrData::Discard, Mask::default())
    }
}

impl Debug for Wr {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        write!(f, "Wr(")?;
        let disp: DataDisp = self.0.into();
        write!(f, "{}", disp)?;
        if !self.mask().is_default() {
            write!(f, ",{:?}", self.mask())?;
        }
        write!(f, ")")
    }
}