parser: make function parameters mode optional

Partially fixes #21
usagi-coffee · Dec 4, 2023 · e0e4244 · e0e4244
1 parent 8e3eb02
commit e0e4244
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Showing 4 changed files with 21,601 additions and 21,485 deletions.
diff --git a/grammar.js b/grammar.js
@@ -426,7 +426,12 @@ module.exports = grammar({
       ),
     function_parameter_mode: ($) => choice(kw("INPUT"), kw("OUTPUT")),
     function_parameter: ($) =>
-      seq($.function_parameter_mode, $.identifier, kw("AS"), $.primitive_type),
+      seq(
+        optional($.function_parameter_mode),
+        $.identifier,
+        kw("AS"),
+        $.primitive_type
+      ),
 
     function_statement: ($) =>
       seq(

diff --git a/src/grammar.json b/src/grammar.json
@@ -3015,8 +3015,16 @@
       "type": "SEQ",
       "members": [
         {
-          "type": "SYMBOL",
-          "name": "function_parameter_mode"
+          "type": "CHOICE",
+          "members": [
+            {
+              "type": "SYMBOL",
+              "name": "function_parameter_mode"
+            },
+            {
+              "type": "BLANK"
+            }
+          ]
         },
         {
           "type": "SYMBOL",