bjoernager/rust
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macros: support adding warnings to diags

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Both diagnostic and subdiagnostic derives were missing the ability to
add warnings to diagnostics - this is made more difficult by the `warn`
attribute already existing, so this name being unavailable for the
derives to use. `#[warn_]` is used instead, which requires
special-casing so that `{span_,}warn` is called instead of
`{span_,}warn_`.

Signed-off-by: David Wood <david.wood@huawei.com>
This commit is contained in:
David Wood 2022-07-11 18:46:24 +01:00
parent 88c11c5bff
commit 81cf2294b4
8 changed files with 70 additions and 25 deletions
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6
compiler/rustc_macros/src/diagnostics/fluent.rs
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@ -260,10 +260,12 @@ pub(crate) fn fluent_messages(input: proc_macro::TokenStream) -> proc_macro::Tok
#generated
pub mod _subdiag {
pub const note: crate::SubdiagnosticMessage =
crate::SubdiagnosticMessage::FluentAttr(std::borrow::Cow::Borrowed("note"));
pub const help: crate::SubdiagnosticMessage =
crate::SubdiagnosticMessage::FluentAttr(std::borrow::Cow::Borrowed("help"));
pub const note: crate::SubdiagnosticMessage =
crate::SubdiagnosticMessage::FluentAttr(std::borrow::Cow::Borrowed("note"));
pub const warn: crate::SubdiagnosticMessage =
crate::SubdiagnosticMessage::FluentAttr(std::borrow::Cow::Borrowed("warn"));
pub const label: crate::SubdiagnosticMessage =
crate::SubdiagnosticMessage::FluentAttr(std::borrow::Cow::Borrowed("label"));
pub const suggestion: crate::SubdiagnosticMessage =