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use hir::{db::AstDatabase, InFile};
use syntax::{AstNode, SyntaxNodePtr};
use crate::{Diagnostic, DiagnosticsContext};
// Diagnostic: unresolved-macro-call
//
// This diagnostic is triggered if rust-analyzer is unable to resolve the path
// to a macro in a macro invocation.
pub(crate) fn unresolved_macro_call(
ctx: &DiagnosticsContext<'_>,
d: &hir::UnresolvedMacroCall,
) -> Diagnostic {
let last_path_segment = ctx.sema.db.parse_or_expand(d.macro_call.file_id).and_then(|root| {
d.macro_call
.value
.to_node(&root)
.path()
.and_then(|it| it.segment())
.and_then(|it| it.name_ref())
.map(|it| InFile::new(d.macro_call.file_id, SyntaxNodePtr::new(it.syntax())))
});
let diagnostics = last_path_segment.unwrap_or_else(|| d.macro_call.clone().map(|it| it.into()));
Diagnostic::new(
"unresolved-macro-call",
format!("unresolved macro `{}!`", d.path),
ctx.sema.diagnostics_display_range(diagnostics).range,
)
.experimental()
}
#[cfg(test)]
mod tests {
use crate::tests::check_diagnostics;
#[test]
fn unresolved_macro_diag() {
check_diagnostics(
r#"
fn f() {
m!();
} //^ error: unresolved macro `m!`
"#,
);
}
#[test]
fn test_unresolved_macro_range() {
check_diagnostics(
r#"
foo::bar!(92);
//^^^ error: unresolved macro `foo::bar!`
"#,
);
}
#[test]
fn unresolved_legacy_scope_macro() {
check_diagnostics(
r#"
macro_rules! m { () => {} }
m!(); m2!();
//^^ error: unresolved macro `self::m2!`
"#,
);
}
#[test]
fn unresolved_module_scope_macro() {
check_diagnostics(
r#"
mod mac {
#[macro_export]
macro_rules! m { () => {} } }
self::m!(); self::m2!();
//^^ error: unresolved macro `self::m2!`
"#,
);
}
}
|
