rearrange precedence for class ranges and atoms (tree-sitter#7)

Author: the-mikedavis

corpus/main.txt

@@ -211,6 +211,18 @@ character classes - '-' is an atom
   )
 ))
 
+===================
+character classes - 'a-' is atoms
+===================
+[a-]
+---
+(pattern (term
+  (character_class
+    (class_character)
+    (class_character)
+  )
+))
+
 ===================
 character classes - /[---]/ is odd but valid
 ===================

grammar.js

@@ -21,6 +21,8 @@ module.exports = grammar({
     $._class_atom,
   ],
 
+  conflicts: $ => [[$.character_class, $.class_range]],
+
   rules: {
     pattern: $ => choice(
       $.disjunction,
@@ -83,7 +85,7 @@ module.exports = grammar({
       ']'
     ),
 
-    class_range: $ => prec.right(1,
+    class_range: $ => prec.right(
       seq($._class_atom, '-', $._class_atom)
     ),
 

src/grammar.json

@@ -262,7 +262,7 @@
     },
     "class_range": {
       "type": "PREC_RIGHT",
-      "value": 1,
+      "value": 0,
       "content": {
         "type": "SEQ",
         "members": [
@@ -669,7 +669,12 @@
       "value": "\n"
     }
   ],
-  "conflicts": [],
+  "conflicts": [
+    [
+      "character_class",
+      "class_range"
+    ]
+  ],
   "precedences": [],
   "externals": [],
   "inline": [