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std.io.Reader: fix peekByte

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This commit is contained in:
Andrew Kelley 2025-07-06 19:41:36 -07:00
parent a7387f0047
commit b077e2979c
1 changed files with 5 additions and 4 deletions
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9
lib/std/io/Reader.zig
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@ -1060,11 +1060,12 @@ pub fn fillMore(r: *Reader) Error!void {
pub fn peekByte(r: *Reader) Error!u8 {
const buffer = r.buffer[0..r.end];
const seek = r.seek;
if (seek >= buffer.len) {
@branchHint(.unlikely);
try fill(r, 1);
if (seek < buffer.len) {
@branchHint(.likely);
return buffer[seek];
}
return buffer[seek];
try fill(r, 1);
return r.buffer[r.seek];
}
/// Reads 1 byte from the stream or returns `error.EndOfStream`.