xhj/embeded-gateway: 网关代码

xhj 4d99525703 first commit		6 月之前
..
preprocessed	4d99525703 first commit	6 月之前
catch_push_back.hpp	4d99525703 first commit	6 月之前
switch.hpp	4d99525703 first commit	6 月之前
try_catch_eval.hpp	4d99525703 first commit	6 月之前
try_catch_expression.hpp	4d99525703 first commit	6 月之前