openharmony/third_party_qrcodegen
1
0
Fork 0
mirror of https://gitee.com/openharmony/third_party_qrcodegen synced 2024-11-27 01:11:45 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Clarified a few bits of Rust code.

Browse Source
This commit is contained in:
Project Nayuki 2021-11-06 23:09:37 +00:00
parent d239c32c45
commit 67ddbb6304
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
rust/src/lib.rs
View File

@ -568,7 +568,7 @@ impl QrCode {
let upward: bool = (right + 1) & 2 == 0;
let y: i32 = if upward { self.size - 1 - vert } else { vert }; // Actual y coordinate
if !self.isfunction[(y * self.size + x) as usize] && i < data.len() * 8 {
*self.module_mut(x, y) = get_bit(u32::from(data[i >> 3]), 7 - ((i & 7) as i32));
*self.module_mut(x, y) = get_bit(u32::from(data[i >> 3]), 7 - ((i as i32) & 7));
i += 1;
}
// If this QR Code has any remainder bits (0 to 7), they were assigned as
@ -1109,7 +1109,7 @@ impl QrSegment {
for seg in segs {
let ccbits: u8 = seg.mode.num_char_count_bits(version);
// ccbits can be as large as 16, but usize can be as small as 16
if let Some(limit) = 1usize.checked_shl(u32::from(ccbits)) {
if let Some(limit) = 1usize.checked_shl(ccbits.into()) {
if seg.numchars >= limit {
return None; // The segment's length doesn't fit the field's bit width
}
@ -1205,7 +1205,7 @@ impl BitBuffer {
///
/// Requires len &#x2264; 31 and val &lt; 2<sup>len</sup>.
pub fn append_bits(&mut self, val: u32, len: u8) {
assert!(len <= 31 && (val >> len) == 0, "Value out of range");
assert!(len <= 31 && val >> len == 0, "Value out of range");
self.0.extend((0 .. i32::from(len)).rev().map(|i| get_bit(val, i))); // Append bit by bit
}
}