fix: Stabilize sort order of runnables

Author: Veykril

src/tools/rust-analyzer/crates/ide/src/annotations.rs

@@ -1,6 +1,6 @@
 use hir::{HasSource, InFile, InRealFile, Semantics};
 use ide_db::{
-    defs::Definition, helpers::visit_file_defs, FileId, FilePosition, FileRange, FxHashSet,
+    defs::Definition, helpers::visit_file_defs, FileId, FilePosition, FileRange, FxIndexSet,
     RootDatabase,
 };
 use itertools::Itertools;
@@ -55,7 +55,7 @@ pub(crate) fn annotations(
     config: &AnnotationConfig,
     file_id: FileId,
 ) -> Vec<Annotation> {
-    let mut annotations = FxHashSet::default();
+    let mut annotations = FxIndexSet::default();
 
     if config.annotate_runnables {
         for runnable in runnables(db, file_id) {
@@ -170,7 +170,19 @@ pub(crate) fn annotations(
         }));
     }
 
-    annotations.into_iter().sorted_by_key(|a| (a.range.start(), a.range.end())).collect()
+    annotations
+        .into_iter()
+        .sorted_by_key(|a| {
+            (
+                a.range.start(),
+                a.range.end(),
+                match &a.kind {
+                    AnnotationKind::Runnable(runnable) => Some(runnable.nav.name.clone()),
+                    _ => None,
+                },
+            )
+        })
+        .collect()
 }
 
 pub(crate) fn resolve_annotation(db: &RootDatabase, mut annotation: Annotation) -> Annotation {
@@ -535,6 +547,20 @@ fn main() {
                             ),
                         },
                     },
+                    Annotation {
+                        range: 69..73,
+                        kind: HasReferences {
+                            pos: FilePositionWrapper {
+                                file_id: FileId(
+                                    0,
+                                ),
+                                offset: 69,
+                            },
+                            data: Some(
+                                [],
+                            ),
+                        },
+                    },
                     Annotation {
                         range: 69..73,
                         kind: Runnable(
@@ -559,20 +585,6 @@ fn main() {
                             },
                         ),
                     },
-                    Annotation {
-                        range: 69..73,
-                        kind: HasReferences {
-                            pos: FilePositionWrapper {
-                                file_id: FileId(
-                                    0,
-                                ),
-                                offset: 69,
-                            },
-                            data: Some(
-                                [],
-                            ),
-                        },
-                    },
                 ]
             "#]],
         );
@@ -717,6 +729,20 @@ fn main() {
                             ),
                         },
                     },
+                    Annotation {
+                        range: 61..65,
+                        kind: HasReferences {
+                            pos: FilePositionWrapper {
+                                file_id: FileId(
+                                    0,
+                                ),
+                                offset: 61,
+                            },
+                            data: Some(
+                                [],
+                            ),
+                        },
+                    },
                     Annotation {
                         range: 61..65,
                         kind: Runnable(
@@ -741,20 +767,6 @@ fn main() {
                             },
                         ),
                     },
-                    Annotation {
-                        range: 61..65,
-                        kind: HasReferences {
-                            pos: FilePositionWrapper {
-                                file_id: FileId(
-                                    0,
-                                ),
-                                offset: 61,
-                            },
-                            data: Some(
-                                [],
-                            ),
-                        },
-                    },
                 ]
             "#]],
         );

src/tools/rust-analyzer/crates/ide/src/runnables.rs

@@ -13,7 +13,7 @@ use ide_db::{
     documentation::docs_from_attrs,
     helpers::visit_file_defs,
     search::{FileReferenceNode, SearchScope},
-    FilePosition, FxHashMap, FxHashSet, RootDatabase, SymbolKind,
+    FilePosition, FxHashMap, FxHashSet, FxIndexMap, RootDatabase, SymbolKind,
 };
 use itertools::Itertools;
 use smallvec::SmallVec;
@@ -130,7 +130,7 @@ pub(crate) fn runnables(db: &RootDatabase, file_id: FileId) -> Vec<Runnable> {
     let mut res = Vec::new();
     // Record all runnables that come from macro expansions here instead.
     // In case an expansion creates multiple runnables we want to name them to avoid emitting a bunch of equally named runnables.
-    let mut in_macro_expansion = FxHashMap::<hir::HirFileId, Vec<Runnable>>::default();
+    let mut in_macro_expansion = FxIndexMap::<hir::HirFileId, Vec<Runnable>>::default();
     let mut add_opt = |runnable: Option<Runnable>, def| {
         if let Some(runnable) = runnable.filter(|runnable| runnable.nav.file_id == file_id) {
             if let Some(def) = def {