Created
June 5, 2018 11:34
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build code both in OTP20 and OTP21 without deprecation warnings
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| -module(otp_compat_transform). | |
| -export([parse_transform/2]). | |
| -export([add_otp21_nowarn/1]). % Export to avoid unused function warning on OTP20 | |
| %% OTP_RELEASE is defined in OTP21, not before | |
| -ifdef(OTP_RELEASE). | |
| parse_transform(AST, _) -> | |
| add_otp21_nowarn(AST). | |
| -else. | |
| parse_transform(AST, _) -> | |
| AST. | |
| -endif. | |
| add_otp21_nowarn(Exprs) -> | |
| {Before, [ModAttr|After]} = lists:splitwith(fun not_module_attr/1, Exprs), | |
| SuddenlyDeprecated = [{erlang, get_stacktrace, 0}, {ssl, ssl_accept, 2}], | |
| NoWarnAttr = {attribute, 0, compile, {nowarn_deprecated_function, SuddenlyDeprecated}}, | |
| Before ++ [ModAttr, NoWarnAttr] ++ After. | |
| not_module_attr({attribute, _, module, _}) -> | |
| true; | |
| not_module_attr(_) -> | |
| false. |
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