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Validate format of extended error descriptions.

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This commit is contained in:
Michael Sproul 2015-04-11 08:14:38 +10:00
parent b7fb57529a
commit dd5eed4b81
1 changed files with 12 additions and 0 deletions
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12
src/libsyntax/diagnostics/plugin.rs
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@ -92,6 +92,18 @@ pub fn expand_register_diagnostic<'cx>(ecx: &'cx mut ExtCtxt,
}
_ => unreachable!()
};
// Check that the description starts and ends with a newline.
description.map(|raw_msg| {
let msg = raw_msg.as_str();
let last = msg.len() - 1;
if &msg[0..1] != "\n" || &msg[last..] != "\n" {
ecx.span_err(span, &format!(
"description for error code {} doesn't start and end with a newline",
token::get_ident(*code)
));
}
raw_msg
});
with_registered_diagnostics(|diagnostics| {
if diagnostics.insert(code.name, description).is_some() {
ecx.span_err(span, &format!(