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use storage::BlockType;
use traits::*;

macro_rules! impl_bits_prim {
    ( $t:ident )
        =>
    {
        impl BitVec for $t {
            type Block = $t;

            #[inline]
            fn bit_len(&self) -> u64 {
                Self::nbits() as u64
            }

            #[inline]
            fn bit_offset(&self) -> u8 {
                0
            }

            #[inline]
            fn block_len(&self) -> usize {
                1
            }

            #[inline]
            fn get_bit(&self, position: u64) -> bool {
                assert!(position < self.bit_len(),
                        "prim::get_bit: out of bounds");
                BlockType::get_bit(*self, position as usize)
            }

            #[inline]
            fn get_block(&self, position: usize) -> Self::Block {
                assert!(position == 0, "prim::get_block: out of bounds");
                *self
            }

            #[inline]
            fn get_bits(&self, start: u64, count: usize) -> Self {
                assert!(start + count as u64 <= Self::nbits() as u64,
                        "prim::get_bits: out of bounds");
                BlockType::get_bits(*self, start as usize, count)
            }
        }

        impl BitVecMut for $t {
            #[inline]
            fn set_bit(&mut self, position: u64, value: bool) {
                assert!(position < self.bit_len(),
                        "prim::set_bit: out of bounds");
                *self = self.with_bit(position as usize, value);
            }

            #[inline]
            fn set_block(&mut self, position: usize, value: Self::Block) {
                assert!(position == 0, "prim::set_block: out of bounds");
                *self = value;
            }

            #[inline]
            fn set_bits(&mut self, start: u64, count: usize, value: Self::Block) {
                assert!(start + count as u64 <= Self::nbits() as u64,
                        "prim::set_bits: out of bounds");
                *self = self.with_bits(start as usize, count, value);
            }
        }
    }
}

impl_bits_prim!(u8);
impl_bits_prim!(u16);
impl_bits_prim!(u32);
impl_bits_prim!(u64);
impl_bits_prim!(usize);