two new tests for comments and one (tiny) fix for trailing comments

priv/test_cases/comment_style_a.json

@@ -0,0 +1,10 @@
+// comment
+{ // comment
+  "key" // comment
+    : // comment
+  [ // comment
+    true // comment
+      , // comment
+    false // comment
+  ] // comment    
+} // comment

priv/test_cases/comment_style_a.test

@@ -0,0 +1,4 @@
+{name, "comment_style_a"}.
+{jsx, [start_object,{key, <<"key">>}, start_array, {literal, true}, {literal, false}, end_array, end_object,end_json]}.
+{json, "comment_style_a.json"}.
+{jsx_flags, [comments]}.

priv/test_cases/comment_style_b.json

@@ -0,0 +1 @@
+/* comment */ { /* comment */ "key" /* comment */ : /* comment */ [ /* comment */ true /* comment */ , /* comment */ false /* comment */ ] /* comment */ } /* comment */

priv/test_cases/comment_style_b.test

@@ -0,0 +1,4 @@
+{name, "comment_style_a"}.
+{jsx, [start_object,{key, <<"key">>}, start_array, {literal, true}, {literal, false}, end_array, end_object,end_json]}.
+{json, "comment_style_a.json"}.
+{jsx_flags, [comments]}.

src/jsx_decoder.erl

@@ -972,7 +972,7 @@ single_comment(<<?newline, Rest/binary>>, Handler, Stack, Opts) ->
     end_comment(Rest, Handler, Stack, Opts);
 single_comment(<<_/utf8, Rest/binary>>, Handler, Stack, Opts) ->
     single_comment(Rest, Handler, Stack, Opts);
-single_comment(<<>>, Handler, [done], Opts) ->
+single_comment(<<>>, Handler, [done], Opts=#opts{explicit_end=false}) ->
     end_comment(<<>>, Handler, [done], Opts);   
 single_comment(<<>>, Handler, Stack, Opts) ->
     ?incomplete(single_comment, <<>>, Handler, Stack, Opts);