[#64] Inline if not working without else (#65)

Author: jonhue

grammar.js

@@ -315,7 +315,7 @@ module.exports = grammar({
       field('condition', $._simple_expression),
       'then',
       field('consequence', $._simple_expression),
-      seq('else', field('alternative', $._simple_expression))
+      optional(seq('else', field('alternative', $._simple_expression)))
     )),
     compound_if: $ => prec.right(seq(
       'if',

test/corpus/expressions.txt

@@ -460,7 +460,7 @@ a :=
   else if true
     1
 
-if false then 1
+fn(if false then 1)
 if true then 1 else 1
 
 ---
@@ -491,10 +491,13 @@ if true then 1 else 1
           condition: (boolean)
           consequence: (block
             (number))))))
-  (if
-    condition: (boolean)
-    consequence: (block
-      (number)))
+  (application
+    abstraction: (identifier)
+    arguments: (arguments
+      (argument
+        value: (if
+          condition: (boolean)
+          consequence: (number)))))
   (if
     condition: (boolean)
     consequence: (number)