grammar.js

@@ -1,9 +1,12 @@
 const PREC = {
   COMMENT: -2,
+  EOL: -1,
   UNQUOTED_STRING: 0,
   CONTAINER: 2,
   CONNECTION: 2,
   SHAPE: 3,
+  CONTAINER_BLOCK: 4,
+  SHAPE_BLOCK: 4,
   IDENTIFIER: 0,
   ARROW: 0,
   ATTRIBUTE: 0,
@@ -20,7 +23,10 @@ module.exports = grammar({
 
   word: ($) => $._identifier,
 
-  conflicts: ($) => [[$._connection_path, $.container]],
+  conflicts: ($) => [
+    [$._connection_path, $.container],
+    [$._container_block_definition, $._shape_block_definition],
+  ],
 
   rules: {
     source_file: ($) => repeat($._root_definition),
@@ -83,7 +89,7 @@ module.exports = grammar({
 
     _container_block_definition: ($) =>
       prec(
-        PREC.CONTAINER,
+        PREC.CONTAINER_BLOCK,
         choice($._eol, seq(choice($.shape, $.container, $.connection), $._end))
       ),
 
@@ -114,7 +120,7 @@ module.exports = grammar({
     _shape_block: ($) =>
       prec(PREC.SHAPE, seq("{", repeat($._shape_block_definition), "}")),
 
-    _shape_block_definition: ($) => prec(PREC.SHAPE, choice($._eol)),
+    _shape_block_definition: ($) => prec(PREC.SHAPE_BLOCK, choice($._eol)),
 
     // attributes
 
@@ -233,7 +239,7 @@ module.exports = grammar({
 
     line_comment: ($) => token(prec(PREC.COMMENT, seq("#", /.*/))),
 
-    _eol: ($) => choice("\n", "\0"),
+    _eol: ($) => token(prec(PREC.EOL, choice("\n", "\0"))),
     _end: ($) => seq(choice(";", $._eol)),
   },
 });

queries/highlights.scm

@@ -3,6 +3,7 @@
 (container_key) @constant
 (shape_key) @variable
 (attr_key) @property
+(reserved) @error
 
 ; Literals
 ;-------------------------------------------------------------------------------

src/grammar.json

@@ -265,7 +265,7 @@
     },
     "_container_block_definition": {
       "type": "PREC",
-      "value": 2,
+      "value": 4,
       "content": {
         "type": "CHOICE",
         "members": [
@@ -469,7 +469,7 @@
     },
     "_shape_block_definition": {
       "type": "PREC",
-      "value": 3,
+      "value": 4,
       "content": {
         "type": "CHOICE",
         "members": [
@@ -977,17 +977,24 @@
       }
     },
     "_eol": {
-      "type": "CHOICE",
+      "type": "TOKEN",
-      "members": [
+      "content": {
-        {
+        "type": "PREC",
-          "type": "STRING",
+        "value": -1,
-          "value": "\n"
+        "content": {
-        },
+          "type": "CHOICE",
-        {
+          "members": [
-          "type": "STRING",
+            {
-          "value": "\u0000"
+              "type": "STRING",
+              "value": "\n"
+            },
+            {
+              "type": "STRING",
+              "value": "\u0000"
+            }
+          ]
         }
-      ]
+      }
     },
     "_end": {
       "type": "SEQ",
@@ -1022,6 +1029,10 @@
     [
       "_connection_path",
       "container"
+    ],
+    [
+      "_container_block_definition",
+      "_shape_block_definition"
     ]
   ],
   "precedences": [],

src/node-types.json

@@ -266,14 +266,6 @@
     "named": true,
     "fields": {}
   },
-  {
-    "type": "\u0000",
-    "named": false
-  },
-  {
-    "type": "\n",
-    "named": false
-  },
   {
     "type": "\"",
     "named": false

test/corpus/container.txt

@@ -196,4 +196,31 @@ Foo biz bar: Biz biz Bar {
   )
 )
 
+================================================================================
+Declare shapes sparsely in a container
+================================================================================
 
+Foo: Baz {
+
+  biz
+  
+  baz
+
+  bar
+
+
+}
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (container
+    (container_key)
+    (label)
+    (block
+      (shape (shape_key))
+      (shape (shape_key))
+      (shape (shape_key))
+    )
+  )
+)

test/highlight/shape.d2

@@ -15,7 +15,7 @@ foo: Foo Bar
 #    ^ string
 
 foo: Foo Bar {
-  # <- variable
+  # <- constant
   #  ^ string
   #          ^ punctuation.bracket