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33 lines
1.4 KiB
Rust
33 lines
1.4 KiB
Rust
use crate::{Diagnostic, DiagnosticsContext, Severity};
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// Diagnostic: unresolved-proc-macro
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//
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// This diagnostic is shown when a procedural macro can not be found. This usually means that
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// procedural macro support is simply disabled (and hence is only a weak hint instead of an error),
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// but can also indicate project setup problems.
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//
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// If you are seeing a lot of "proc macro not expanded" warnings, you can add this option to the
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// `rust-analyzer.diagnostics.disabled` list to prevent them from showing. Alternatively you can
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// enable support for procedural macros (see `rust-analyzer.procMacro.attributes.enable`).
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pub(crate) fn unresolved_proc_macro(
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ctx: &DiagnosticsContext<'_>,
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d: &hir::UnresolvedProcMacro,
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attr_proc_macros_enabled: bool,
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) -> Diagnostic {
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// Use more accurate position if available.
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let display_range = d
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.precise_location
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.unwrap_or_else(|| ctx.sema.diagnostics_display_range(d.node.clone()).range);
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let message = match &d.macro_name {
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Some(name) => format!("proc macro `{}` not expanded", name),
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None => "proc macro not expanded".to_string(),
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};
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let message = format!(
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"{message}{}",
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if attr_proc_macros_enabled { "" } else { " (attribute macro expansion is disabled)" }
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);
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Diagnostic::new("unresolved-proc-macro", message, display_range)
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.severity(if attr_proc_macros_enabled { Severity::Error } else { Severity::WeakWarning })
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}
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