Boost C++ Libraries

typed_value(T * store_to);

Ctor. The 'store_to' parameter tells where to store the value when it's known. The parameter can be NULL.

typed_value * default_value(const T & v) ;

Specifies default value, which will be used if none is explicitly specified. The type 'T' should provide operator<< for ostream.

typed_value * default_value(const T & v, const std::string & textual) ;

Specifies default value, which will be used if none is explicitly specified. Unlike the above overload, the type 'T' need not provide operator<< for ostream, but textual representation of default value must be provided by the user.

typed_value * notifier(function1< void, const T & > f) ;

Specifies a function to be called when the final value is determined.

typed_value * composing() ;

Specifies that the value is composing. See the 'is_composing' method for explanation.

typed_value * multitoken() ;

Specifies that the value can span multiple tokens.

typed_value * zero_tokens() ;

std::string name() const;

bool is_composing() const;

unsigned min_tokens() const;

unsigned max_tokens() const;

void xparse(boost::any & value_store, 
            const std::vector< std::basic_string< charT > > & new_tokens) const;

Creates an instance of the 'validator' class and calls its operator() to perform athe ctual conversion.

virtual bool apply_default(boost::any & value_store) const;

If default value was specified via previous call to 'default_value', stores that value into 'value_store'. Returns true if default value was stored.

void notify(const boost::any & value_store) const;

If an address of variable to store value was specified when creating *this, stores the value there. Otherwise, does nothing.