[Swig-user] %clear vs %typemap without body

[Andrey S. <dar...@ma...>]

Hi, all!

I wrote following swig file:

--- begin of 1.swg ---
%module test

%include <windows.i>

%{
# include <afx.h>
%}

%typemap( in, checkfn = "lua_isstring" ) _CString& ( CString s ) %{
   if ( !LuaHelpers::GetLuaString( L, $input, s ) ) {
     SWIG_fail;
   }
   $1 = &s;
%}

%extend A {
   %typemap( in ) CString& s = _CString&;
   void test ( CString& s ) { self->test( s ); }
   %clear CString& s;
   // %typemap( in ) CString& s;
}
%ignore A::test;

class A {
   public:
     void test ( CString& s );
};

class B {
   public:
     void test ( CString& s );
};
--- end of 2.swg ---

It is not important why i need such strange code 8-) But this code allow 
   to show the problem i discovered. As they said in "10.2.4 Deleting a 
typemap", lines
%typemap( in ) CString& s;
and
%clear CString& s;
in this case have to do same thing - do not allow to apply rules on 
B::test's argument. But if i use commented %typemap instead of %clear, 
%typemap doesn't delete and applies to B::test.

-- 
WBR, Andrey Starodubtsev        mailto:dar...@ma...