Issue for BOOST_PP_REMOVE_PARENS macro

[akeyliu]

I'm now using BOOST preprocess library for generate set/get/to_json/from_json code automatically. But I find some problem when using BOOST_PP_REMOVE_PARENS macro. Please check it.
Follow is the code in remove_parens.hpp with line 24-36.
The code for line 31 which should be (param) not (param)() in the original code.

#define BOOST_PP_REMOVE_PARENS(param)
BOOST_PP_IIF
(
BOOST_PP_IS_BEGIN_PARENS(param),
BOOST_PP_REMOVE_PARENS_DO,
BOOST_PP_IDENTITY
)
(param)() \ /// The content should be (param) not (param)().
/**/

#define BOOST_PP_REMOVE_PARENS_DO(param)
BOOST_PP_IDENTITY(BOOST_PP_TUPLE_ENUM(param))
/**/

[akeyliu]

I found the bug is that:

In the file: include\boost\preprocessor\punctuation\remove_parens.hpp
Line 34-35:
#define BOOST_PP_REMOVE_PARENS_DO(param)
BOOST_PP_IDENTITY(BOOST_PP_TUPLE_ENUM(param)) \

This will fail if the param is not TUPLE but SEQ or LIST.

I found the error when I am using SEQ and correct after I change to TUPLE.

Hope this can help!