cmdline::OneShotIStream Class Reference

#include <CmdLine.h>

Public Member Functions
bool	isValid () const
	OneShotIStream ()
	OneShotIStream (const std::string &s)
	operator void * () const
template<typename T >
bool	operator>> (T &obj)

Private Attributes
bool	readout_
std::string	str_
bool	valid_

Detailed Description

Definition at line 150 of file CmdLine.h.

Constructor & Destructor Documentation

cmdline::OneShotIStream::OneShotIStream ( )

inline

Definition at line 153 of file CmdLine.h.

: valid_(false), readout_(false) {}

cmdline::OneShotIStream::OneShotIStream ( const std::string &  s )

inline

Definition at line 155 of file CmdLine.h.

        : str_(s), valid_(true), readout_(false) {}

Member Function Documentation

bool cmdline::OneShotIStream::isValid ( void  ) const

inline

Definition at line 194 of file CmdLine.h.

References valid_.

Referenced by ntuple._Object::_checkIsValid(), core.AutoHandle.AutoHandle::ReallyLoad(), and cmdline::CmdLine::require().

{return valid_;}

cmdline::OneShotIStream::operator void * ( ) const

inline

Definition at line 158 of file CmdLine.h.

References readout_, and valid_.

    {
        return valid_ && !readout_ ? (void*)this : (void*)0;
    }

template<typename T >

bool cmdline::OneShotIStream::operator>> ( T &  obj )

inline

Definition at line 164 of file CmdLine.h.

References cmdline::OneShotExtract(), readout_, str_, and valid_.

    {
        if (readout_)
            throw CmdLineError()
                << "can't reuse command line argument \"" << str_ << '"';
        readout_ = true;
        if (valid_)
        {
            std::istringstream is(str_);
            OneShotExtract(is, obj);
            if (is.bad() || is.fail())
                throw CmdLineError()
                    << "failed to parse command line argument \""
                    << str_ << '"'
#ifdef __GNUC__
                    << ", " << demangle(obj) << " expected"
#endif
                    ;
            if (is.peek() != EOF)
                throw CmdLineError()
                    << "extra characters in command line argument \""
                    << str_ << '"'
#ifdef __GNUC__
                    << ", " << demangle(obj) << " expected"
#endif
                    ;
        }
        return valid_;
    }

Member Data Documentation

bool cmdline::OneShotIStream::readout_

private

Definition at line 199 of file CmdLine.h.

Referenced by operator void *(), and operator>>().

std::string cmdline::OneShotIStream::str_

private

Definition at line 197 of file CmdLine.h.

Referenced by operator>>().

bool cmdline::OneShotIStream::valid_

private

Definition at line 198 of file CmdLine.h.

Referenced by isValid(), operator void *(), and operator>>().