Ticket #317: tkt-317-nilableArrayItems.patch

Source/CobraParser.cobra

@@ -3604 +3604 @@
         assert t
 
         # TODO: the array and nilable check should probably be at the bottom of qualifiedType
-
+        
+        # Chk for nilable Type (for array element) e.g. TYPE?,   TYPE?[]
+        if .optional('QUESTION')
+            t = NilableTypeIdentifier(.last, t)
+        
         # check for array
         bracket = .optional('LBRACKET')
         if bracket

Tests/110-basics-two/800-arrays/300-nilable-array-item.cobra

@@ +1 @@
+# test array with nilable items - (semi-silent parse failure)
+# tkt 317  as float32?[] - array of nilable float32
+
+class NilArr
+    def main is shared
+        tNF as float32?[] = @[10.2f32, nil]
+        tNF = float32?[](10)    # expression works  
+        tNF[0]= 32.1f32
+        tNF[2]=1.012f32
+        print tNF
+        .x(tNF)
+        
+    def x(a as float32?[] ) is shared   
+        print 'In x', a
+        assert a[0] == 32.1f32
+        assert a[2] == 1.012f32
+        assert a[1] == nil
+        assert a[9] == nil