Add yield to grammar

tree-sitter-dust/grammar.js

@@ -6,7 +6,6 @@ module.exports = grammar({
   extras: $ => [ /\s/, $._comment ],
 
   conflicts: $ => [
-    [$.block],
     [$.map, $.assignment_operator],
   ],
 
@@ -15,10 +14,10 @@ module.exports = grammar({
 
     _comment: $ => /[#][^#\n]*[#|\n]/,
 
-    block: $ => choice(
+    block: $ => prec.right(choice(
       repeat1($.statement),
       seq('{', repeat1($.statement), '}'),
-    ),
+    )),
 
     statement: $ => prec.right(seq(
       choice(
@@ -52,6 +51,7 @@ module.exports = grammar({
       $.logic,
       $.math,
       $.value,
+      $.yield,
     )),
 
     _expression_list: $ => repeat1(prec.right(seq($.expression, optional(',')))),
@@ -287,6 +287,12 @@ module.exports = grammar({
       $.expression,
     )),
 
+    yield: $ => prec.left(seq(
+      $.expression,
+      '->',
+      $.function_call,
+    )),
+
     function: $ => seq(
       field('parameters', optional($.identifier_list)),
       '=>',

tree-sitter-dust/src/grammar.json

@@ -14,6 +14,9 @@
       "value": "[#][^#\\n]*[#|\\n]"
     },
     "block": {
+      "type": "PREC_RIGHT",
+      "value": 0,
+      "content": {
         "type": "CHOICE",
         "members": [
           {
@@ -44,6 +47,7 @@
             ]
           }
         ]
+      }
     },
     "statement": {
       "type": "PREC_RIGHT",
@@ -186,6 +190,10 @@
           {
             "type": "SYMBOL",
             "name": "value"
+          },
+          {
+            "type": "SYMBOL",
+            "name": "yield"
           }
         ]
       }
@@ -1208,6 +1216,27 @@
         ]
       }
     },
+    "yield": {
+      "type": "PREC_LEFT",
+      "value": 0,
+      "content": {
+        "type": "SEQ",
+        "members": [
+          {
+            "type": "SYMBOL",
+            "name": "expression"
+          },
+          {
+            "type": "STRING",
+            "value": "->"
+          },
+          {
+            "type": "SYMBOL",
+            "name": "function_call"
+          }
+        ]
+      }
+    },
     "function": {
       "type": "SEQ",
       "members": [
@@ -1445,9 +1474,6 @@
     }
   ],
   "conflicts": [
-    [
-      "block"
-    ],
     [
       "map",
       "assignment_operator"

tree-sitter-dust/src/node-types.json

@@ -142,6 +142,10 @@
         {
           "type": "value",
           "named": true
+        },
+        {
+          "type": "yield",
+          "named": true
         }
       ]
     }
@@ -734,6 +738,25 @@
       ]
     }
   },
+  {
+    "type": "yield",
+    "named": true,
+    "fields": {},
+    "children": {
+      "multiple": true,
+      "required": true,
+      "types": [
+        {
+          "type": "expression",
+          "named": true
+        },
+        {
+          "type": "function_call",
+          "named": true
+        }
+      ]
+    }
+  },
   {
     "type": "!=",
     "named": false
@@ -778,6 +801,10 @@
     "type": "-=",
     "named": false
   },
+  {
+    "type": "->",
+    "named": false
+  },
   {
     "type": "..",
     "named": false