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Use byte range instead of char count for delim run bounds #956

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merged 1 commit into from
Sep 10, 2024
Merged

Use byte range instead of char count for delim run bounds #956

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24 changes: 12 additions & 12 deletions pulldown-cmark/src/firstpass.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2282,7 +2282,7 @@ fn delim_run_can_open(
ix: usize,
mode: TableParseMode,
) -> bool {
let next_char = if let Some(c) = suffix.chars().nth(run_len) {
let next_char = if let Some(c) = suffix[run_len..].chars().next() {
c
} else {
return false;
Expand All @@ -2294,28 +2294,28 @@ fn delim_run_can_open(
return true;
}
if mode == TableParseMode::Active {
if s[..ix].ends_with('|') && !s[..ix].ends_with(r"\|") {
if s.as_bytes()[..ix].ends_with(b"|") && !s.as_bytes()[..ix].ends_with(br"\|") {
return true;
}
if next_char == '|' {
return false;
}
}
let delim = suffix.chars().next().unwrap();
let delim = suffix.bytes().next().unwrap();
// `*` and `~~` can be intraword, `_` and `~` cannot
if delim == '*' && !is_punctuation(next_char) {
if delim == b'*' && !is_punctuation(next_char) {
return true;
}
if delim == '~' && run_len > 1 {
if delim == b'~' && run_len > 1 {
return true;
}
let prev_char = s[..ix].chars().last().unwrap();
if delim == '~' && prev_char == '~' && !is_punctuation(next_char) {
if delim == b'~' && prev_char == '~' && !is_punctuation(next_char) {
return true;
}

prev_char.is_whitespace()
|| is_punctuation(prev_char) && (delim != '\'' || ![']', ')'].contains(&prev_char))
|| is_punctuation(prev_char) && (delim != b'\'' || ![']', ')'].contains(&prev_char))
}

/// Determines whether the delimiter run starting at given index is
Expand All @@ -2335,25 +2335,25 @@ fn delim_run_can_close(
if prev_char.is_whitespace() {
return false;
}
let next_char = if let Some(c) = suffix.chars().nth(run_len) {
let next_char = if let Some(c) = suffix[run_len..].chars().next() {
c
} else {
return true;
};
if mode == TableParseMode::Active {
if s[..ix].ends_with('|') && !s[..ix].ends_with(r"\|") {
if s.as_bytes()[..ix].ends_with(b"|") && !s.as_bytes()[..ix].ends_with(br"\|") {
return false;
}
if next_char == '|' {
return true;
}
}
let delim = suffix.chars().next().unwrap();
let delim = suffix.bytes().next().unwrap();
// `*` and `~~` can be intraword, `_` and `~` cannot
if (delim == '*' || (delim == '~' && run_len > 1)) && !is_punctuation(prev_char) {
if (delim == b'*' || (delim == b'~' && run_len > 1)) && !is_punctuation(prev_char) {
return true;
}
if delim == '~' && prev_char == '~' {
if delim == b'~' && prev_char == '~' {
return true;
}

Expand Down