add emptyline rule

grammar.js

@@ -8,20 +8,21 @@ module.exports = grammar({
   word: ($) => $._word,
 
   conflicts: ($) => [
-    [$._identifier],
     [$.identifier],
     [$.arrow],
+    [$._identifier],
     [$._shape_block],
     [$._shape_block_definition],
     [$._style_attr_block],
     [$._inner_style_attribute],
+    [$._emptyline],
   ],
 
   rules: {
     source_file: ($) => repeat($._definition),
 
     _definition: ($) =>
-      choice(seq(spaces, $._eof), $._root_attribute, $.connection, $.shape),
+      choice($._emptyline, $._root_attribute, $.connection, $.shape),
 
     connection: ($) =>
       seq(
@@ -64,9 +65,7 @@ module.exports = grammar({
         spaces,
         "{",
         spaces,
-        repeat(
-          choice(seq(spaces, $._eof), seq($._shape_block_definition, $._end))
-        ),
+        repeat(choice($._emptyline, seq($._shape_block_definition, $._end))),
         optional(seq($._shape_block_definition, optional($._end))),
         spaces,
         "}"
@@ -95,7 +94,7 @@ module.exports = grammar({
         spaces,
         "{",
         spaces,
-        repeat(choice($._eof, seq($._inner_style_attribute, $._end))),
+        repeat(choice($._emptyline, seq($._inner_style_attribute, $._end))),
         optional(seq($._inner_style_attribute, optional($._end))),
         spaces,
         "}"
@@ -178,6 +177,7 @@ module.exports = grammar({
 
     _word: ($) => /[\w\d]+/,
 
+    _emptyline: ($) => seq(spaces, $._eof),
     _eof: ($) => choice("\n", "\0"),
     _end: ($) => seq(spaces, choice(";", $._eof)),
   },

src/grammar.json

@@ -13,20 +13,8 @@
       "type": "CHOICE",
       "members": [
         {
-          "type": "SEQ",
-          "members": [
-            {
-              "type": "REPEAT",
-              "content": {
-                "type": "STRING",
-                "value": " "
-              }
-            },
-            {
-              "type": "SYMBOL",
-              "name": "_eof"
-            }
-          ]
+          "type": "SYMBOL",
+          "name": "_emptyline"
         },
         {
           "type": "SYMBOL",
@@ -298,20 +286,8 @@
             "type": "CHOICE",
             "members": [
               {
-                "type": "SEQ",
-                "members": [
-                  {
-                    "type": "REPEAT",
-                    "content": {
-                      "type": "STRING",
-                      "value": " "
-                    }
-                  },
-                  {
-                    "type": "SYMBOL",
-                    "name": "_eof"
-                  }
-                ]
+                "type": "SYMBOL",
+                "name": "_emptyline"
               },
               {
                 "type": "SEQ",
@@ -497,7 +473,7 @@
             "members": [
               {
                 "type": "SYMBOL",
-                "name": "_eof"
+                "name": "_emptyline"
               },
               {
                 "type": "SEQ",
@@ -997,6 +973,22 @@
       "type": "PATTERN",
       "value": "[\\w\\d]+"
     },
+    "_emptyline": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "REPEAT",
+          "content": {
+            "type": "STRING",
+            "value": " "
+          }
+        },
+        {
+          "type": "SYMBOL",
+          "name": "_eof"
+        }
+      ]
+    },
     "_eof": {
       "type": "CHOICE",
       "members": [
@@ -1038,15 +1030,15 @@
   },
   "extras": [],
   "conflicts": [
-    [
-      "_identifier"
-    ],
     [
       "identifier"
     ],
     [
       "arrow"
     ],
+    [
+      "_identifier"
+    ],
     [
       "_shape_block"
     ],
@@ -1058,6 +1050,9 @@
     ],
     [
       "_inner_style_attribute"
+    ],
+    [
+      "_emptyline"
     ]
   ],
   "precedences": [],