Related to JdeRobot #211

generate_code.cpp

/* Code example related to
https://github.com/RoboticsURJC/JdeRobot/issues/211

Additional docs:
  - http://www.boost.org/doc/libs/1_59_0/libs/format/doc/format.html
  - http://studiofreya.com/cpp/a-few-boostformat-examples/
*/

#include <iostream>
#include <boost/format.hpp>

int main(){

	/* this reduce code length but could produce collisions. Be aware
	using namespace std;
	using namespace boost;
	*/

	string iceName = "NAME";
	string iceInterface("INTERFACE");
	
	/* Equivalent code for
	https://github.com/reysam93/JdeRobot/blob/0bf2194392c941c91e72c822ae5708bd29cd9468/src/stable/components/visualHFSM/generate.cpp#L1013#L1029
	*/

	std::cout<<boost::format(
"       # Contact to %1%\n\
       %1% = self.ic.propertyToProxy('automata.%2%.Proxy')\n\
       if(not %1%):\n\
           raise Exception('could not create proxy with %1%')\n\
       self.%1%Prx = %2%Prx.checkedCast(%1%)\n\
       if(not self.%1%Prx):\n\
           raise Exception('invalid proxy automata.%2%.Proxy')\n\
       print '%1% connected'\n\
\n"
	) % iceName % iceInterface;
	/* Pay attention.
	Above is a single string.
	'\' at end of line means that this line continues below.
	'\n' is Linux new line. This is worse than std::endl because 
	there are several combinations:
	  - \n Linux
	  - \r Unix (Mac)
	  - \r\n Windows
	\n\ produces a new line without add spaces at end of line (lighter code!)
	also is ease to use and remember.
	  
	Using ' for python strings because do not require escaping.
	  */

	return 0;
}

/* Run it:
g++ generate_code.cpp
./a.out
       # Contact to NAME
       NAME = self.ic.propertyToProxy('automata.INTERFACE.Proxy')
       if(not NAME):
           raise Exception('could not create proxy with NAME')
       self.NAMEPrx = INTERFACEPrx.checkedCast(NAME)
       if(not self.NAMEPrx):
           raise Exception('invalid proxy automata.INTERFACE.Proxy')
       print 'NAME connected'
*/