grammar: flatten atoms to a single level

Author: leostera

grammar.js

@@ -108,7 +108,7 @@ const oneOf = (x) => choice.apply(null, x);
 module.exports = grammar({
   name: "erlang",
 
-  word: ($) => $.unquoted_atom,
+  word: ($) => $._unquoted_atom,
 
   extras: ($) => [/[\x00-\x20\x80-\xA0]/, $.comment],
 
@@ -542,10 +542,10 @@ module.exports = grammar({
     list: ($) => list($.expression),
     tuple: ($) => tuple($.expression),
 
-    atom: ($) => field("value", choice($.unquoted_atom, $.quoted_atom)),
-    unquoted_atom: ($) =>
+    atom: ($) => field("value", choice($._unquoted_atom, $._quoted_atom)),
+    _unquoted_atom: ($) =>
       /[a-z\xDF-\xF6\xF8-\xFF][_@a-zA-Z0-9\xC0-\xD6\xD8-\xDE\xDF-\xF6\xF8-\xFF]*/,
-    quoted_atom: ($) => seq("'", repeat(choice(/[^'\\]+/, $._escape)), "'"),
+    _quoted_atom: ($) => seq("'", repeat(choice(/[^'\\]+/, $._escape)), "'"),
 
     integer: ($) =>
       choice(

src/grammar.json

@@ -1,6 +1,6 @@
 {
   "name": "erlang",
-  "word": "unquoted_atom",
+  "word": "_unquoted_atom",
   "rules": {
     "source_file": {
       "type": "REPEAT",
@@ -3363,20 +3363,20 @@
         "members": [
           {
             "type": "SYMBOL",
-            "name": "unquoted_atom"
+            "name": "_unquoted_atom"
           },
           {
             "type": "SYMBOL",
-            "name": "quoted_atom"
+            "name": "_quoted_atom"
           }
         ]
       }
     },
-    "unquoted_atom": {
+    "_unquoted_atom": {
       "type": "PATTERN",
       "value": "[a-z\\xDF-\\xF6\\xF8-\\xFF][_@a-zA-Z0-9\\xC0-\\xD6\\xD8-\\xDE\\xDF-\\xF6\\xF8-\\xFF]*"
     },
-    "quoted_atom": {
+    "_quoted_atom": {
       "type": "SEQ",
       "members": [
         {

src/node-types.json

@@ -4,16 +4,12 @@
     "named": true,
     "fields": {
       "value": {
-        "multiple": false,
+        "multiple": true,
         "required": true,
         "types": [
           {
-            "type": "quoted_atom",
-            "named": true
-          },
-          {
-            "type": "unquoted_atom",
-            "named": true
+            "type": "'",
+            "named": false
           }
         ]
       }
@@ -1697,11 +1693,6 @@
       }
     }
   },
-  {
-    "type": "quoted_atom",
-    "named": true,
-    "fields": {}
-  },
   {
     "type": "record",
     "named": true,
@@ -2519,10 +2510,6 @@
     "type": "type",
     "named": false
   },
-  {
-    "type": "unquoted_atom",
-    "named": true
-  },
   {
     "type": "unsigned",
     "named": false