-pub struct GenericCache<T: Copy> {
- pub height: usize,
- pub stride: usize,
- pub xpos: usize,
- pub data: Vec<T>,
- pub default: T,
-}
-
-impl<T:Copy> GenericCache<T> {
- pub fn new(height: usize, stride: usize, default: T) -> Self {
- let mut ret = Self {
- stride: stride,
- height: height,
- xpos: 0,
- data: Vec::with_capacity((height + 1) * stride),
- default: default,
- };
- ret.reset();
- ret
- }
- fn full_size(&self) -> usize { self.stride * (self.height + 1) }
- pub fn reset(&mut self) {
- self.data.truncate(0);
- let size = self.full_size();
- self.data.resize(size, self.default);
- self.xpos = self.stride + 1;
- }
- pub fn update_row(&mut self) {
- for i in 0..self.stride {
- self.data[i] = self.data[self.height * self.stride + i];
- }
- self.data.truncate(self.stride);
- let size = self.full_size();
- self.data.resize(size, self.default);
- self.xpos = self.stride + 1;
- }
-}
-