[boost] String Algorithm Lib BCB workaround

From: John Maddock (john_at_[hidden])
Date: 2004-07-17 06:20:10

The string algo library is currently failing with Borland's compiler because
it uses code like:

template< typename T >

class has_native_replace

{

#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

private:

static T* t;

public:

BOOST_STATIC_CONSTANT(bool, value=(

sizeof(has_native_replace_tester(t))==sizeof(yes_type) ) );

#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

public:

# if BOOST_WORKAROUND( __IBMCPP__, <= 600 )

enum { value = false };

# else

BOOST_STATIC_CONSTANT(bool, value=false);

# endif // BOOST_WORKAROUND( __IBMCPP__, <= 600 )

#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

typedef mpl::bool_<value> type;   //error here

};

Rather than adding yet another workaround, I think this can all be
simplified by just using:

#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

template< typename T >

class has_native_replace

{

private:

static T* t;

public:

BOOST_STATIC_CONSTANT(bool, value=(

sizeof(has_native_replace_tester(t))==sizeof(yes_type) ) );

typedef mpl::bool_<value> type;

};

#else

template< typename T >

class has_native_replace : public mpl::bool_<false>

{

};

#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

and similar for the other traits classes.

John.