Fix inadvertent automatic semicolon insertion

lib/rkelly/parser.rb

@@ -27,6 +27,7 @@ def initialize
       @tokens = []
       @logger = nil
       @terminator = false
+      @for_header_parentheses = 0
       @prev_token = nil
       @comments = []
     end
@@ -88,7 +89,21 @@ def next_token
         end
       end while([:COMMENT, :S].include?(n_token.name))
 
+
+      if '(' == n_token.value
+        if 'for' == @prev_token.value
+          @for_header_parentheses = 1
+        elsif @for_header_parentheses > 0
+          @for_header_parentheses += 1
+        end
+      end
+
+      if ')' == n_token.value && @for_header_parentheses > 0
+        @for_header_parentheses -= 1
+      end
+
       if @terminator &&
+          0 == @for_header_parentheses &&
           ((@prev_token && %w[continue break return throw].include?(@prev_token.value)) ||
            (n_token && %w[++ --].include?(n_token.value)))
         @position -= 1

test/test_automatic_semicolon_insertion.rb

@@ -131,6 +131,22 @@ def test_no_for_insertion
     assert_nil @parser.parse("for (a;b\n){}")
   end
 
+  def test_no_for_insertion_with_prefix_plus_plus
+    assert_sexp([[:for, [:resolve, 'a'],
+                        [:resolve, 'b'],
+                        [:prefix, [:resolve, 'c'], '++'],
+                        [:block, []]]],
+                @parser.parse("for (a;\nb;\n++c){}"))
+  end
+
+  def test_no_for_insertion_with_postfix_plus_plus
+    assert_sexp([[:for, [:resolve, 'a'],
+                        [:resolve, 'b'],
+                        [:postfix, [:resolve, 'c'], '++'],
+                        [:block, []]]],
+                @parser.parse("for (a;\nb;\nc++){}"))
+  end
+
   def assert_sexp(expected, node)
     assert_equal(expected, node.to_sexp)
   end