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errors: implement fallback diagnostic translation

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This commit updates the signatures of all diagnostic functions to accept
types that can be converted into a `DiagnosticMessage`. This enables
existing diagnostic calls to continue to work as before and Fluent
identifiers to be provided. The `SessionDiagnostic` derive just
generates normal diagnostic calls, so these APIs had to be modified to
accept Fluent identifiers.

In addition, loading of the "fallback" Fluent bundle, which contains the
built-in English messages, has been implemented.

Each diagnostic now has "arguments" which correspond to variables in the
Fluent messages (necessary to render a Fluent message) but no API for
adding arguments has been added yet. Therefore, diagnostics (that do not
require interpolation) can be converted to use Fluent identifiers and
will be output as before.
This commit is contained in:
David Wood 2022-03-26 07:27:43 +00:00
parent c45f29595d
commit 7f91697b50
46 changed files with 919 additions and 293 deletions
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4
compiler/rustc_query_system/src/query/plumbing.rs
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@ -620,8 +620,8 @@ fn incremental_verify_ich_cold(sess: &Session, dep_node: DebugArg<'_>, result: D
} else {
sess.struct_err(&format!("internal compiler error: encountered incremental compilation error with {:?}", dep_node))
.help(&format!("This is a known issue with the compiler. Run {} to allow your project to compile", run_cmd))
.note(&"Please follow the instructions below to create a bug report with the provided information")
.note(&"See <https://github.com/rust-lang/rust/issues/84970> for more information")
.note("Please follow the instructions below to create a bug report with the provided information")
.note("See <https://github.com/rust-lang/rust/issues/84970> for more information")
.emit();
panic!("Found unstable fingerprints for {:?}: {:?}", dep_node, result);
}