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Add message to formatter SyntaxError (#5881)

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**Summary** Add a static string error message to the formatter syntax
error so we can disambiguate where the syntax error came from

**Test Plan** No fixed tests, we don't expect this to occur, but it
helped with transformers syntax error debugging:

```
Error: Failed to format node

Caused by:
    syntax error: slice first colon token was not a colon
```
This commit is contained in:
konsti 2023-07-19 17:15:26 +02:00 • committed by GitHub
parent 46a17d11f3
commit 63ed7a31e8
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6 changed files with 38 additions and 13 deletions
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8
crates/ruff_python_formatter/src/expression/string.rs
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@ -91,7 +91,9 @@ impl Format<PyFormatContext<'_>> for FormatStringContinuation<'_> {
continue;
}
Err(_) => {
return Err(FormatError::SyntaxError);
return Err(FormatError::syntax_error(
"Unexpected lexer error in string formatting",
));
}
};
@ -167,7 +169,9 @@ impl Format<PyFormatContext<'_>> for FormatStringPart {
let prefix = StringPrefix::parse(string_content);
let after_prefix = &string_content[usize::from(prefix.text_len())..];
let quotes = StringQuotes::parse(after_prefix).ok_or(FormatError::SyntaxError)?;
let quotes = StringQuotes::parse(after_prefix).ok_or(FormatError::syntax_error(
"Didn't find string quotes after prefix",
))?;
let relative_raw_content_range = TextRange::new(
prefix.text_len() + quotes.text_len(),
string_content.text_len() - quotes.text_len(),