Re: [Swig-user] Preserving "const" in char * definition

[Jason D. <Jas...@yo...>]

Ok figured it out, was able to define a typemap using the example set
forth in the std_string.i file.

 

%typemap(out) myStringClass

{

ZVAL_STRINGL($result, (char *)static_cast<const char*>($1),
$1.GetByteSize(), 1);

}

 

Works very well, swig is really fun!

 

FYI is there a cross language string convertor macro in swig? So that I
wouldn't have to qualify this typemap for just PHP?

 

Jason D. Dictos
Software Architect
Yosemite Technologies, Inc.
7435 N. Ingram Ave
Fresno, CA 93711
(559) 392-1875 (cell)
(559) 449-8181 x146 (office)
(559) 449-1188 (fax)

 

From: Jason Dictos 
Sent: Thursday, January 08, 2009 4:17 PM
To: 'swi...@li...'
Subject: Preserving "const" in char * definition

 

So we have a string class that allows users to cast it to a const char
*, but won't allow a casting to char * for type safety reasons.

 

One of our wrapped methods returns this string class, and I was able to
bypass the use of typemaps by doing the following:

 

%module myModule

 

%{

//Forward declarations

myStringClass myMethod();

%]

 

//Swigify these methods

const char *myMethod();

 

However, when swig parses the definition, it strips out the "const"
portion, and thus I get a compilation error in my wrapper file.

 

I suppose the best way to do this would be through a typemap, but I'm
not quite sure how. 

 

Any ideas?

 

Jason D. Dictos
Software Architect
Yosemite Technologies, Inc.
7435 N. Ingram Ave
Fresno, CA 93711
(559) 392-1875 (cell)
(559) 449-8181 x146 (office)
(559) 449-1188 (fax)