simplify some terminals

Author: tek

grammar/exp.js

@@ -107,7 +107,7 @@ module.exports = {
 
   exp_th_quoted_name: $ => choice(
     seq('\'', $._cons),
-    seq('\'', token.immediate('\''), $._atype),
+    seq('\'\'', $._atype),
     seq('\'', $._vars),
   ),
 

grammar/type.js

@@ -246,11 +246,9 @@ module.exports = {
     '_',
   ),
 
-  _role: _ => 'role',
-
   decl_role: $ => seq(
     'type',
-    $._role,
+    'role',
     $._tycons,
     repeat1($.type_role),
   )

src/grammar.json

@@ -1537,10 +1537,6 @@
         }
       ]
     },
-    "_role": {
-      "type": "STRING",
-      "value": "role"
-    },
     "decl_role": {
       "type": "SEQ",
       "members": [
@@ -1549,8 +1545,8 @@
           "value": "type"
         },
         {
-          "type": "SYMBOL",
-          "name": "_role"
+          "type": "STRING",
+          "value": "role"
         },
         {
           "type": "SYMBOL",
@@ -2601,14 +2597,7 @@
           "members": [
             {
               "type": "STRING",
-              "value": "'"
-            },
-            {
-              "type": "IMMEDIATE_TOKEN",
-              "content": {
-                "type": "STRING",
-                "value": "'"
-              }
+              "value": "''"
             },
             {
               "type": "SYMBOL",

src/node-types.json

@@ -15151,6 +15151,10 @@
     "type": "'",
     "named": false
   },
+  {
+    "type": "''",
+    "named": false
+  },
   {
     "type": "(",
     "named": false
@@ -15447,6 +15451,10 @@
     "type": "representational",
     "named": false
   },
+  {
+    "type": "role",
+    "named": false
+  },
   {
     "type": "safety",
     "named": true