Re: how does swig manages std::strings in Lua?
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- Subject: Re: how does swig manages std::strings in Lua?
- From: Bradley Smith <gmane@...>
- Date: 2008年2月23日 11:26:58 -0800
Luo Hei wrote:
Well, thats the question. I would like to pass strings to lua scripts
via swig generated wrappers. Can i use std::string or should I fall back
to C style strings?
If you use the following line, you get some support for std::string.
%include "std_string.i"
The file std_string.i is included in the Lua bindng files of swig (at
least with version 1.3.33). Here is a little documentation from the top
of std_string.i.
/*
Only std::string and const std::string& are typemaped
they are converted to the Lua strings automatically
std::string& and std::string* are not
they must be explicitly managed (see below)
eg.
std::string test_value(std::string x) {
return x;
}
can be used as
s="hello world"
s2=test_value(s)
assert(s==s2)
*/