stings.hpp

Hello,

I'm having problems with strings.hpp. Class String is now
(last few 0.60) declared as:

  class String : public OStream

In previous versions (0.50.5) it is:

  class String : public std::string, public OStream

This means that previously a call to operator== was serviced
by the std::sting class but now there is no operator defined
within the class.  Running a simple test program[1] through
ddd shows that gcc will implicitly type cast to a ParmString
then call operator==(ParmString s1, const char * s2).

Although by reading the comments I can see that this will give
the desire result I can't see from the coding why it should be.
It's also inefficient, even inlined.  More importantly the Sun
Forte compiler (Sun 1 Studio 8) doesn't assume the type cast
to ParmString.  If I provide the operator== methods in
string.hpp the Sun CC works but g++ finds an ambiguity.

Can the String classes be rationalised?  Why isn't the
std::string class used? Why don't the other string classes
inherit from String?



James Lee.




Note 1. Simple test program:

#include <string.hpp>

int
main(
	int argc,
	char argv[])
{
	acommon::String aaa = "aaa";

	if (aaa == "bbb") {
		exit(1);
	}

	exit(0);
}