Merge #8345

8345: Add pub mod option for UnlinkedFile r=rainy-me a=rainy-me

close #8228

This is a draft that changes `Diagnostic` to contain multiple fixes. Pre analysis is in https://github.com/rust-analyzer/rust-analyzer/issues/8228#issuecomment-812887085 Because this solution is straightforward so I decided to type it out for discussion.

Currently the `check_fix` is not able to test the situation when multiple fixes available. <del>Also because `Insert 'mod x;'` and  `Insert 'pub mod x;'` are so similar, I don't know how to test them correctly and want some suggestions.</del>. I added 
 `check_fixes` to allow checking mutiple possible fixes.

In additional, instead of append after possible existing `mod y`, I think it's possible to Insert `pub mod x;` after `pub mod y`. Should I implement this too?

Co-authored-by: rainy-me <[email protected]>

1 files changed, 6 insertions, 6 deletions

diff --git a/crates/ide/src/diagnostics/fixes/replace_with_find_map.rs b/crates/ide/src/diagnostics/fixes/replace_with_find_map.rs
index b0ef7b44a..444bf563b 100644
--- a/crates/ide/src/diagnostics/fixes/replace_with_find_map.rs
+++ b/crates/ide/src/diagnostics/fixes/replace_with_find_map.rs
@@ -7,14 +7,14 @@ use syntax::{
 };
 use text_edit::TextEdit;
 
-use crate::diagnostics::{fix, DiagnosticWithFix};
+use crate::diagnostics::{fix, DiagnosticWithFixes};
 
-impl DiagnosticWithFix for ReplaceFilterMapNextWithFindMap {
-    fn fix(
+impl DiagnosticWithFixes for ReplaceFilterMapNextWithFindMap {
+    fn fixes(
         &self,
         sema: &Semantics<RootDatabase>,
         _resolve: &AssistResolveStrategy,
-    ) -> Option<Assist> {
+    ) -> Option<Vec<Assist>> {
         let root = sema.db.parse_or_expand(self.file)?;
         let next_expr = self.next_expr.to_node(&root);
         let next_call = ast::MethodCallExpr::cast(next_expr.syntax().clone())?;
@@ -32,12 +32,12 @@ impl DiagnosticWithFix for ReplaceFilterMapNextWithFindMap {
 
         let source_change = SourceChange::from_text_edit(self.file.original_file(sema.db), edit);
 
-        Some(fix(
+        Some(vec![fix(
             "replace_with_find_map",
             "Replace filter_map(..).next() with find_map()",
             source_change,
             trigger_range,
-        ))
+        )])
     }
 }