fix(pglt_workspace): emit scan errors #219
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psteinroe
commented
Feb 24, 2025
| /// | ||
| /// Scan diagnostics are always **fatal errors**. | ||
| #[derive(Clone, Debug, Diagnostic, PartialEq)] | ||
| #[diagnostic(category = "syntax", severity = Fatal)] |
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severity = Fatal is important here -> its what we use higher up to determine whether the document can be used or not
psteinroe
commented
Feb 24, 2025
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| pub fn from_pg_query_err(err: pg_query::Error, input: &str) -> Vec<Self> { | ||
| let err_msg = err.to_string(); | ||
| let re = regex::Regex::new(r#"at or near "(.*?)""#).unwrap(); | ||
| let mut diagnostics = Vec::new(); | ||
|
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| for captures in re.captures_iter(&err_msg) { | ||
| if let Some(matched) = captures.get(1) { | ||
| let search_term = matched.as_str(); | ||
| for (idx, _) in input.match_indices(search_term) { | ||
| let from = idx; | ||
| let to = from + search_term.len(); | ||
| diagnostics.push(ScanError { | ||
| span: Some(TextRange::new( | ||
| from.try_into().unwrap(), | ||
| to.try_into().unwrap(), | ||
| )), | ||
| message: MessageAndDescription::from(err_msg.clone()), | ||
| }); | ||
| } | ||
| } |
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we try to find the problematic text in the input to put a range on the diagnostics. this is not safe in any way but I find it nicer to show too many diagnostics where one is for sure valid than none and have the user look through the text.
psteinroe
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emitting scan errors from the lexer. we ignored them before because I thought they never happen. but they do!
also: