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errors: introduce DiagnosticMessage

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Introduce a `DiagnosticMessage` type that will enable diagnostic
messages to be simple strings or Fluent identifiers.
`DiagnosticMessage` is now used in the implementation of the standard
`DiagnosticBuilder` APIs.

Signed-off-by: David Wood <david.wood@huawei.com>
This commit is contained in:
David Wood 2022-03-23 07:34:20 +00:00
parent a22cf2af05
commit 8c684563a5
10 changed files with 79 additions and 43 deletions
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3
compiler/rustc_parse/src/parser/item.rs
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@ -1010,7 +1010,8 @@ impl<'a> Parser<'a> {
let current_qual_sp = self.prev_token.span;
let current_qual_sp = current_qual_sp.to(sp_start);
if let Ok(current_qual) = self.span_to_snippet(current_qual_sp) {
if err.message() == "expected `{`, found keyword `unsafe`" {
// FIXME(davidtwco): avoid depending on the error message text
if err.message().as_str() == "expected `{`, found keyword `unsafe`" {
let invalid_qual_sp = self.token.uninterpolated_span();
let invalid_qual = self.span_to_snippet(invalid_qual_sp).unwrap();