grammar: some cleanup

grammar.js

@@ -95,10 +95,8 @@ module.exports = grammar({
       seq(
         $._connection_path,
         repeat1(seq($.arrow, $._connection_path)),
-        seq(
         optional(seq($._colon, optional($.label))),
         optional(seq(alias($._connection_block, $.block)))
-        )
       ),
 
     _connection_path: ($) =>
@@ -370,13 +368,13 @@ module.exports = grammar({
     attr_value_list: mkList(($) => $.attr_value),
 
     attr_value: ($) =>
-      seq(choice($.boolean, $.integer, $.float, $.string, $._unquoted_string)),
+      choice($.boolean, $.integer, $.float, $.string, $._unquoted_string),
 
     // --------------------------------------------
 
     _dash: ($) => token.immediate("-"),
 
-    _colon: ($) => seq(":"),
+    _colon: ($) => token(":"),
 
     arrow: ($) => token(prec(PREC.ARROW, choice(/-+>/, /--+/, /<-+/, /<-+>/))),
 

src/grammar.json

@@ -88,9 +88,6 @@
             ]
           }
         },
-        {
-          "type": "SEQ",
-          "members": [
         {
           "type": "CHOICE",
           "members": [
@@ -143,8 +140,6 @@
           ]
         }
       ]
-        }
-      ]
     },
     "_connection_path": {
       "type": "SEQ",
@@ -1976,9 +1971,6 @@
       ]
     },
     "attr_value": {
-      "type": "SEQ",
-      "members": [
-        {
       "type": "CHOICE",
       "members": [
         {
@@ -2002,8 +1994,6 @@
           "name": "_unquoted_string"
         }
       ]
-        }
-      ]
     },
     "_dash": {
       "type": "IMMEDIATE_TOKEN",
@@ -2013,13 +2003,11 @@
       }
     },
     "_colon": {
-      "type": "SEQ",
+      "type": "TOKEN",
-      "members": [
+      "content": {
-        {
         "type": "STRING",
         "value": ":"
       }
-      ]
     },
     "arrow": {
       "type": "TOKEN",

src/node-types.json

@@ -515,10 +515,6 @@
     "type": "3d",
     "named": false
   },
-  {
-    "type": ":",
-    "named": false
-  },
   {
     "type": ";",
     "named": false