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00001 #ifndef LOGICALEXPRBASE_H 00002 #define LOGICALEXPRBASE_H 00003 00004 #include "SundanceDefs.h" 00005 #include "XMLObject.h" 00006 #include "Cell.h" 00007 00008 namespace Sundance 00009 { 00010 00011 using namespace TSF; 00012 using std::string; 00013 00014 using std::ostream; 00015 00016 class LogicalExpr; 00017 00018 /** 00019 * \ingroup LowLevelSymbolics 00020 */ 00021 00022 class LogicalExprBase 00023 { 00024 public: 00025 /** */ 00026 LogicalExprBase(){;} 00027 00028 /** TUVD */ 00029 virtual ~LogicalExprBase(){;} 00030 00031 /** */ 00032 virtual bool evaluate(const Cell& cell) const = 0 ; 00033 00034 /** write to XML form */ 00035 virtual XMLObject toXML() const = 0 ; 00036 00037 /** test equality between expressions */ 00038 virtual bool equals(const LogicalExpr& other) const = 0 ; 00039 00040 /** test ordering of two logical expressions */ 00041 virtual bool lessThan(const LogicalExpr& other) const = 0 ; 00042 private: 00043 }; 00044 00045 00046 00047 00048 00049 } 00050 #endif