Enum rustc_errors::SubdiagnosticMessage

pub enum SubdiagnosticMessage {
    Str(String),
    FluentIdentifier(Cow<'static, str>),
    FluentAttr(Cow<'static, str>),
}

Abstraction over a message in a subdiagnostic (i.e. label, note, help, etc) to support both translatable and non-translatable diagnostic messages.

Translatable messages for subdiagnostics are typically attributes attached to a larger Fluent message so messages of this type must be combined with a DiagnosticMessage (using DiagnosticMessage::with_subdiagnostic_message) before rendering. However, subdiagnostics from the SessionSubdiagnostic derive refer to Fluent identifiers directly.

Variants

Str(String)

Non-translatable diagnostic message.

FluentIdentifier(Cow<'static, str>)

Identifier of a Fluent message. Instances of this variant are generated by the SessionSubdiagnostic derive.

FluentAttr(Cow<'static, str>)

Attribute of a Fluent message. Needs to be combined with a Fluent identifier to produce an actual translated message. Instances of this variant are generated by the fluent_messages macro.

https://projectfluent.org/fluent/guide/attributes.html

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

• Str: 24 bytes
• FluentIdentifier: 24 bytes
• FluentAttr: 24 bytes