Simplify.h

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#ifndef AMPGEN_SIMPLIFY_H
#define AMPGEN_SIMPLIFY_H 1
#include <complex>
#include <string>
#include <utility>
#include <vector>
 
#include "AmpGen/Expression.h"
 
namespace AmpGen { 
  
  Expression Simplify(const Expression& expression );
  
  class NormalOrderedExpression { 
    public:
      struct Term {
        std::complex<double>                              m_prefactor; 
        std::vector<std::pair<Expression,std::string>>    m_terms;
        Expression                                        m_divisor; 
        std::string                                       m_expressionAsString; 
        bool                                              m_markForRemoval;
        void addExpression( const Expression& expression);
        Term( const Expression& expression ) ;
        operator Expression() ;
      };
      void addTerm( const Expression& expression );
      NormalOrderedExpression( const Expression& expression, const bool& expandSubTrees=false );
      void groupExpressions();
 
      operator Expression();
      std::vector<Expression> ExpandBrackets( const Expression& expression );
      std::vector<Term> terms() const { return m_terms ; }
    private:
      std::vector<Term> m_terms;
      bool m_expandSubTrees; 
  };
}
 
#endif