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Add dump-syntax fallback error message

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This commit is contained in:
David Tolnay 2019-03-02 00:34:44 -08:00
parent c2ddaaf1c0
commit 2e7bd2581c
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GPG Key ID: F9BA143B95FF6D82
1 changed files with 6 additions and 2 deletions
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8
examples/dump-syntax/src/main.rs
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@ -91,12 +91,12 @@ fn render_location(
let mut end = err.span().end();
if start.line == end.line && start.column == end.column {
return Ok(());
return render_fallback(formatter, err);
}
let code_line = match code.lines().nth(start.line - 1) {
Some(line) => line,
None => return Ok(()),
None => return render_fallback(formatter, err),
};
if end.line > start.line {
@ -128,3 +128,7 @@ fn render_location(
message = err,
)
}
fn render_fallback(formatter: &mut fmt::Formatter, err: &syn::Error) -> fmt::Result {
write!(formatter, "Unable to parse file: {}", err)
}