monistode_binutils/
address.rs

1use bitvec::vec::BitVec;
2
3#[derive(Debug, Clone, Copy)]
4pub struct Address(pub usize); // always in bits for now
5
6impl std::ops::Add<usize> for Address {
7    type Output = Address;
8    fn add(self, rhs: usize) -> Self::Output {
9        Address(self.0 + rhs)
10    }
11}
12
13impl std::ops::Sub<Address> for Address {
14    type Output = i64;
15
16    fn sub(self, rhs: Address) -> Self::Output {
17        self.0 as i64 - rhs.0 as i64
18    }
19}
20
21pub trait AddressIndexable<T> {
22    fn index(&self, index: Address) -> T;
23    fn write(&mut self, index: Address, value: T);
24}
25
26impl AddressIndexable<u16> for BitVec {
27    fn index(&self, index: Address) -> u16 {
28        let mut result = 0u16;
29        for i in 0..16 {
30            result <<= 1;
31            if index.0 + i < self.len() && self[index.0 + i] {
32                result |= 1;
33            }
34        }
35        result
36    }
37
38    fn write(&mut self, index: Address, value: u16) {
39        let mut value = value;
40        for i in 0..16 {
41            if index.0 + i < self.len() {
42                self.set(index.0 + 15 - i, value & 1 == 1);
43                value >>= 1;
44            }
45        }
46    }
47}
monistode_binutils/address.rs

monistode_binutils/
address.rs
