VSCode: Add several handy onEnterRules

commit-id:5ffc097f

vscode-cairo/language-configuration.json

@@ -40,4 +40,27 @@
       "end": "^\\s*// endregion\\b",
     },
   },
+  "onEnterRules": [
+    {
+      // Carry indentation from the previous line if it's only whitespace.
+      "beforeText": "^\\s+$",
+      "action": { "indent": "none" },
+    },
+    {
+      // After the end of a function/field chain, with the semicolon on the same line.
+      "beforeText": "^\\s+\\..*;",
+      "action": { "indent": "outdent" },
+    },
+    {
+      // After the end of a function/field chain, with semicolon detached from the rest.
+      "beforeText": "^\\s+;",
+      "previousLineText": "^\\s+\\..*",
+      "action": { "indent": "outdent" },
+    },
+    {
+      // Doc single-line comment e.g. ///|
+      "beforeText": "^\\s*\\/{3}.*$",
+      "action": { "indent": "none", "appendText": "/// " },
+    },
+  ],
 }