source: src/Actions/Action_impl_header.hpp@ 76cec6

/*
 * Action_impl_header.hpp
 *
 *  Created on: Aug 25, 2010
 *      Author: heber
 */

#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/comparison/equal.hpp>
#include <boost/preprocessor/comparison/not_equal.hpp>
#include <boost/preprocessor/control/if.hpp>
#include <boost/preprocessor/debug/assert.hpp>
#include <boost/preprocessor/iteration/local.hpp>
#include <boost/preprocessor/punctuation/comma_if.hpp>
#include <boost/preprocessor/repetition/repeat.hpp>
#include <boost/preprocessor/seq/elem.hpp>
#include <boost/preprocessor/seq/push_back.hpp>
#include <boost/preprocessor/seq/seq.hpp>
#include <boost/preprocessor/seq/size.hpp>
#include <boost/preprocessor/seq/transform.hpp>

#include <iostream>
#include <typeinfo>

#include "Actions/ActionTraits.hpp"
#include "Actions/OptionTrait.hpp"
#include "Actions/ValueStorage.hpp"

// some derived names: if CATEGORY is not given, we don't prefix with it
#ifdef CATEGORY
#define ACTION BOOST_PP_CAT(CATEGORY, BOOST_PP_CAT(ACTIONNAME, Action))
#define COMMAND BOOST_PP_CAT(CATEGORY, ACTIONNAME)
#define PARAMS BOOST_PP_CAT(CATEGORY, BOOST_PP_CAT(ACTIONNAME, Parameters))
#else
#define ACTION BOOST_PP_CAT(ACTIONNAME, Action)
#define COMMAND ACTIONNAME
#define PARAMS BOOST_PP_CAT(ACTIONNAME, Parameters)
#endif
// check if no lists given
#ifndef paramtypes
#define MAXPARAMTYPES 0
#else
#define MAXPARAMTYPES BOOST_PP_SEQ_SIZE(paramtypes)
#endif

// check user has given name and category
#ifndef ACTIONNAME
ERROR: No "ACTIONNAME" defined in: __FILE__
#endif

// calculate numbers and check whether all have same size
#ifdef paramtokens
BOOST_PP_ASSERT_MSG(BOOST_PP_EQUAL(MAXPARAMTYPES, BOOST_PP_SEQ_SIZE(paramtokens)),\
  ERROR: There are not the same number of "paramtokens" and "paramtypes" in: __FILE__ \
)
#endif
#ifdef paramreferences
BOOST_PP_ASSERT_MSG(BOOST_PP_EQUAL(MAXPARAMTYPES, BOOST_PP_SEQ_SIZE(paramreferences)),\
  ERROR: There are not the same number of "paramtokens" and "paramreferences" in: __FILE__ \
)
#endif
#ifdef paramdescriptions
BOOST_PP_ASSERT_MSG(BOOST_PP_EQUAL(MAXPARAMTYPES, BOOST_PP_SEQ_SIZE(paramdescriptions)),\
  ERROR: There are not the same number of "paramtokens" and "paramdescriptions" in: __FILE__ \
)
#endif

// check for mandatory defines
#ifndef DESCRIPTION
BOOST_PP_ASSERT_MSG(0, \
    "ERROR: Description is mandatory for Actions, here for ACTION " \
)
#endif

// check if paramdefaults is given, otherwise fill list with NODEFAULT
// this does not work: paramdefaults has to be completely defined before
// being used within option_print (used as an array there and not as
// some function call still to be expanded)
//#define paramdefaults (NODEFAULT)
//#define tempvalue(z,n,value)
//  BOOST_PP_CAT(value,(NODEFAULT))
//BOOST_PP_REPEAT(tempvalue, MAXPARAMTYPES, paramdefaults)
//#undef tempvalue
//#else

// if present, check if correct number of arguments
#ifdef paramdefaults
BOOST_PP_ASSERT_MSG(BOOST_PP_EQUAL(MAXPARAMTYPES, BOOST_PP_SEQ_SIZE(paramdefaults)),\
  ERROR: There are not the same number of "paramtokens" and "paramdefaults" in: __FILE__ \
)
#endif

// print a list of type ref followed by a separator, i.e. "int i;"
#define type_print(z,n,TYPELIST, VARLIST, separator) \
  BOOST_PP_SEQ_ELEM(n, TYPELIST) \
  BOOST_PP_SEQ_ELEM(n, VARLIST)\
  separator

// print a list of type ref followed, i.e. "int i, double position"
#define type_list(z,n,TYPELIST, VARLIST) \
  BOOST_PP_COMMA_IF(n)\
  BOOST_PP_SEQ_ELEM(n, TYPELIST) \
  BOOST_PP_SEQ_ELEM(n, VARLIST)

// prints Options.insert
#ifdef paramdefaults
#define option_print(z,n,unused, unused2) \
  tester = Options. insert (\
      std::pair< std::string, OptionTrait *> ( \
      BOOST_PP_SEQ_ELEM(n, paramtokens), \
      new OptionTrait(\
          BOOST_PP_SEQ_ELEM(n, paramtokens), \
          &typeid( BOOST_PP_SEQ_ELEM(n, paramtypes) ), \
          BOOST_PP_SEQ_ELEM(n, paramdescriptions), \
          BOOST_PP_SEQ_ELEM(n, paramdefaults) )\
      )\
  ); \
  ASSERT(tester.second, "ActionTrait<ACTION>::ActionTrait<ACTION>() option token present twice!");
#else
#define option_print(z,n,unused, unused2) \
  tester = Options. insert (\
      std::pair< std::string, OptionTrait *> ( \
      BOOST_PP_SEQ_ELEM(n, paramtokens), \
      new OptionTrait(\
          BOOST_PP_SEQ_ELEM(n, paramtokens), \
          &typeid( BOOST_PP_SEQ_ELEM(n, paramtypes) ), \
          BOOST_PP_SEQ_ELEM(n, paramdescriptions), \
          NODEFAULT )\
      )\
  ); \
  ASSERT(tester.second, "ActionTrait<ACTION>::ActionTrait<ACTION>() option token present twice!");
#endif

#if defined paramtypes && defined paramreferences
void COMMAND(
#define BOOST_PP_LOCAL_MACRO(n) type_list(~, n, paramtypes, paramreferences)
#define BOOST_PP_LOCAL_LIMITS  (0, MAXPARAMTYPES-1)
#include BOOST_PP_LOCAL_ITERATE()
    );
# else
void COMMAND();
#endif

class ACTION;

template <>
class ActionTrait<ACTION> : public ActionTraits {
public:
  ActionTrait() :
#ifndef SHORTFORM
    ActionTraits(OptionTrait(TOKEN, &typeid(void), DESCRIPTION, std::string()))
#else
    ActionTraits(OptionTrait(TOKEN, &typeid(void), DESCRIPTION, std::string(), SHORTFORM))
#endif /* SHORTFORM */
  {
  // initialize remainder of action info
#ifdef MENUNAME
    MenuTitle = MENUNAME;
#endif
#ifdef MENUPOSITION
    MenuPosition = MENUPOSITION;
#endif

  // initialize action's options
  std::pair< ActionTraits::options_iterator, bool > tester;
#ifdef paramtokens
#define BOOST_PP_LOCAL_MACRO(n) option_print(~, n, ~, )
#define BOOST_PP_LOCAL_LIMITS  (0, MAXPARAMTYPES-1)
#include BOOST_PP_LOCAL_ITERATE()
#endif
  // associate action's short form also with option
#ifdef SHORTFORM
  if (Options.find(TOKEN) != Options.end())
    Options[TOKEN]->setShortForm(std::string(SHORTFORM));
#endif /* SHORTFORM */
  std::cout << "ActionTrait<ACTION>::ActionTrait() with " << getName() << ", type " << getTypeName() << " and description " << getDescription() << std::endl;
  }

  ~ActionTrait() {}
};

class ACTION : public Action {
  #if defined paramtypes && defined paramreferences
  friend void COMMAND(
  #define BOOST_PP_LOCAL_MACRO(n) type_list(~, n, paramtypes, paramreferences)
  #define BOOST_PP_LOCAL_LIMITS  (0, MAXPARAMTYPES-1)
  #include BOOST_PP_LOCAL_ITERATE()
      );
  # else
  void COMMAND();
  #endif

public:
  ACTION();
  virtual ~ACTION();

  bool canUndo();
  bool shouldUndo();

  struct PARAMS : ActionParameters {
  #if defined paramtypes && defined paramreferences
  #define BOOST_PP_LOCAL_MACRO(n) type_print(~, n, paramtypes, paramreferences, ;)
  #define BOOST_PP_LOCAL_LIMITS  (0, MAXPARAMTYPES-1)
  #include BOOST_PP_LOCAL_ITERATE()
  #endif
  } params;

protected:
  virtual Dialog * fillDialog(Dialog*);
private:
  virtual void getParametersfromValueStorage();
  virtual Action::state_ptr performCall();
  virtual Action::state_ptr performUndo(Action::state_ptr);
  virtual Action::state_ptr performRedo(Action::state_ptr);
};

#undef paramtypes
#undef paramtokens
#undef paramreferences
#undef paramdescriptions
#undef paramdefaults
#undef MAXPARAMTYPES
#undef statetypes
#undef statereferences
#undef MAXSTATETYPES

#undef ACTION
#undef COMMAND
#undef COMMANDFULL
#undef PARAMS

#undef ACTIONNAME
#undef CATEGORY
#undef MENUNAME
#undef MENUPOSITION
#undef TOKEN

#undef DESCRIPTION
#undef SHORTFORM