diff options
Diffstat (limited to 'vendor/serde_json/src/iter.rs')
-rw-r--r-- | vendor/serde_json/src/iter.rs | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/vendor/serde_json/src/iter.rs b/vendor/serde_json/src/iter.rs deleted file mode 100644 index 9792916..0000000 --- a/vendor/serde_json/src/iter.rs +++ /dev/null @@ -1,70 +0,0 @@ -use crate::io; - -pub struct LineColIterator<I> { - iter: I, - - /// Index of the current line. Characters in the first line of the input - /// (before the first newline character) are in line 1. - line: usize, - - /// Index of the current column. The first character in the input and any - /// characters immediately following a newline character are in column 1. - /// The column is 0 immediately after a newline character has been read. - col: usize, - - /// Byte offset of the start of the current line. This is the sum of lengths - /// of all previous lines. Keeping track of things this way allows efficient - /// computation of the current line, column, and byte offset while only - /// updating one of the counters in `next()` in the common case. - start_of_line: usize, -} - -impl<I> LineColIterator<I> -where - I: Iterator<Item = io::Result<u8>>, -{ - pub fn new(iter: I) -> LineColIterator<I> { - LineColIterator { - iter, - line: 1, - col: 0, - start_of_line: 0, - } - } - - pub fn line(&self) -> usize { - self.line - } - - pub fn col(&self) -> usize { - self.col - } - - pub fn byte_offset(&self) -> usize { - self.start_of_line + self.col - } -} - -impl<I> Iterator for LineColIterator<I> -where - I: Iterator<Item = io::Result<u8>>, -{ - type Item = io::Result<u8>; - - fn next(&mut self) -> Option<io::Result<u8>> { - match self.iter.next() { - None => None, - Some(Ok(b'\n')) => { - self.start_of_line += self.col + 1; - self.line += 1; - self.col = 0; - Some(Ok(b'\n')) - } - Some(Ok(c)) => { - self.col += 1; - Some(Ok(c)) - } - Some(Err(e)) => Some(Err(e)), - } - } -} |