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Assertions

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Kornel 2021-06-15 12:24:04 +01:00 committed by Josh Holmer
parent 3e996a0f82
commit c4910709d9
1 changed files with 4 additions and 0 deletions
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4
src/filters.rs
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@ -1,4 +1,6 @@
pub fn filter_line(filter: u8, bpp: usize, data: &[u8], last_line: &[u8], buf: &mut Vec<u8>) { pub fn filter_line(filter: u8, bpp: usize, data: &[u8], last_line: &[u8], buf: &mut Vec<u8>) {
assert!(data.len() >= bpp);
assert!(last_line.is_empty() || data.len() == last_line.len());
buf.reserve(data.len()); buf.reserve(data.len());
match filter { match filter {
0 => { 0 => {
@ -17,6 +19,7 @@ pub fn filter_line(filter: u8, bpp: usize, data: &[u8], last_line: &[u8], buf: &
if last_line.is_empty() { if last_line.is_empty() {
buf.extend_from_slice(data); buf.extend_from_slice(data);
} else { } else {
assert_eq!(data.len(), last_line.len());
buf.extend( buf.extend(
data.iter() data.iter()
.zip(last_line.iter()) .zip(last_line.iter())
@ -65,6 +68,7 @@ pub fn filter_line(filter: u8, bpp: usize, data: &[u8], last_line: &[u8], buf: &
pub fn unfilter_line(filter: u8, bpp: usize, data: &[u8], last_line: &[u8], buf: &mut Vec<u8>) { pub fn unfilter_line(filter: u8, bpp: usize, data: &[u8], last_line: &[u8], buf: &mut Vec<u8>) {
buf.clear(); buf.clear();
buf.reserve(data.len()); buf.reserve(data.len());
assert!(data.len() >= bpp);
assert_eq!(data.len(), last_line.len()); assert_eq!(data.len(), last_line.len());
match filter { match filter {
0 => { 0 => {