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Fix possible infinite loop when running syntax highlighting tests

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Fixes #1347
This commit is contained in:
Max Brunsfeld 2021-08-29 15:03:53 -07:00
parent 81c724cea0
commit 8fa875b1a4
2 changed files with 40 additions and 41 deletions
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62
cli/src/query_testing.rs
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@ -48,40 +48,38 @@ pub fn parse_position_comments(
if node.kind().contains("comment") {
if let Ok(text) = node.utf8_text(source) {
let mut position = node.start_position();
if position.row == 0 {
continue;
}
// Find the arrow character ("^" or '<-") in the comment. A left arrow
// refers to the column where the comment node starts. An up arrow refers
// to its own column.
let mut has_left_caret = false;
let mut has_arrow = false;
let mut arrow_end = 0;
for (i, c) in text.char_indices() {
arrow_end = i + 1;
if c == '-' && has_left_caret {
has_arrow = true;
break;
if position.row > 0 {
// Find the arrow character ("^" or '<-") in the comment. A left arrow
// refers to the column where the comment node starts. An up arrow refers
// to its own column.
let mut has_left_caret = false;
let mut has_arrow = false;
let mut arrow_end = 0;
for (i, c) in text.char_indices() {
arrow_end = i + 1;
if c == '-' && has_left_caret {
has_arrow = true;
break;
}
if c == '^' {
has_arrow = true;
position.column += i;
break;
}
has_left_caret = c == '<';
}
if c == '^' {
has_arrow = true;
position.column += i;
break;
}
has_left_caret = c == '<';
}
// If the comment node contains an arrow and a highlight name, record the
// highlight name and the position.
if let (true, Some(mat)) =
(has_arrow, CAPTURE_NAME_REGEX.find(&text[arrow_end..]))
{
assertion_ranges.push((node.start_position(), node.end_position()));
result.push(Assertion {
position: position,
expected_capture_name: mat.as_str().to_string(),
});
// If the comment node contains an arrow and a highlight name, record the
// highlight name and the position.
if let (true, Some(mat)) =
(has_arrow, CAPTURE_NAME_REGEX.find(&text[arrow_end..]))
{
assertion_ranges.push((node.start_position(), node.end_position()));
result.push(Assertion {
position: position,
expected_capture_name: mat.as_str().to_string(),
});
}
}
}
}