use hir::db::AstDatabase; use ide_assists::Assist; use ide_db::{base_db::AnchoredPathBuf, source_change::FileSystemEdit}; use syntax::AstNode; use crate::diagnostics::{fix, Diagnostic, DiagnosticsContext}; // Diagnostic: unresolved-module // // This diagnostic is triggered if rust-analyzer is unable to discover referred module. pub(super) fn unresolved_module( ctx: &DiagnosticsContext<'_>, d: &hir::UnresolvedModule, ) -> Diagnostic { Diagnostic::new( "unresolved-module", "unresolved module", ctx.sema.diagnostics_display_range(d.decl.clone().map(|it| it.into())).range, ) .with_fixes(fixes(ctx, d)) } fn fixes(ctx: &DiagnosticsContext<'_>, d: &hir::UnresolvedModule) -> Option> { let root = ctx.sema.db.parse_or_expand(d.decl.file_id)?; let unresolved_module = d.decl.value.to_node(&root); Some(vec![fix( "create_module", "Create module", FileSystemEdit::CreateFile { dst: AnchoredPathBuf { anchor: d.decl.file_id.original_file(ctx.sema.db), path: d.candidate.clone(), }, initial_contents: "".to_string(), } .into(), unresolved_module.syntax().text_range(), )]) } #[cfg(test)] mod tests { use expect_test::expect; use crate::diagnostics::tests::{check_diagnostics, check_expect}; #[test] fn unresolved_module() { check_diagnostics( r#" //- /lib.rs mod foo; mod bar; //^^^^^^^^ unresolved module mod baz {} //- /foo.rs "#, ); } #[test] fn test_unresolved_module_diagnostic() { check_expect( r#"mod foo;"#, expect![[r#" [ Diagnostic { message: "unresolved module", range: 0..8, severity: Error, fixes: Some( [ Assist { id: AssistId( "create_module", QuickFix, ), label: "Create module", group: None, target: 0..8, source_change: Some( SourceChange { source_file_edits: {}, file_system_edits: [ CreateFile { dst: AnchoredPathBuf { anchor: FileId( 0, ), path: "foo.rs", }, initial_contents: "", }, ], is_snippet: false, }, ), }, ], ), unused: false, code: Some( DiagnosticCode( "unresolved-module", ), ), experimental: false, }, ] "#]], ); } }