Merge pull request #21888 from akyrtzi/migrate-index-where

[migrator] Migrate '.index(where:)' to '.firstIndex(where:)'

Author: akyrtzi

lib/Migrator/overlay4.json

@@ -1332,4 +1332,15 @@
     "RightComment": "firstIndex",
     "ModuleName": "Swift"
   },
+  {
+    "DiffItemKind": "CommonDiffItem",
+    "NodeKind": "Function",
+    "NodeAnnotation": "Rename",
+    "ChildIndex": "0",
+    "LeftUsr": "s:SlsE5index5where5IndexQzSgSb7ElementQzKXE_tKF",
+    "LeftComment": "index",
+    "RightUsr": "",
+    "RightComment": "firstIndex",
+    "ModuleName": "Swift"
+  },
 ]

lib/Migrator/overlay42.json

@@ -10,4 +10,15 @@
     "RightComment": "firstIndex",
     "ModuleName": "Swift"
   },
+  {
+    "DiffItemKind": "CommonDiffItem",
+    "NodeKind": "Function",
+    "NodeAnnotation": "Rename",
+    "ChildIndex": "0",
+    "LeftUsr": "s:SlsE5index5where5IndexQzSgSb7ElementQzKXE_tKF",
+    "LeftComment": "index",
+    "RightUsr": "",
+    "RightComment": "firstIndex",
+    "ModuleName": "Swift"
+  },
 ]

test/Migrator/stdlib_rename.swift

@@ -6,6 +6,7 @@
 
 func test1(_ a: [String], s: String) {
   _ = a.index(of: s)
+  _ = a.index(where: { _ in true })
 }
 func test2(_ s: String, c: Character) {
   _ = s.index(of: c)

test/Migrator/stdlib_rename.swift.expected

@@ -6,6 +6,7 @@
 
 func test1(_ a: [String], s: String) {
   _ = a.firstIndex(of: s)
+  _ = a.firstIndex(where: { _ in true })
 }
 func test2(_ s: String, c: Character) {
   _ = s.firstIndex(of: c)