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XabslEngine Class Library Reference
XabslDecimalExpression.h Go to the documentation of this file. /** * @file XabslDecimalExpression.h * * Definition of DecimalExpression and derivates * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> * @author <a href="http://www.informatik.hu-berlin.de/~juengel">Matthias JŸngel</a> */ #ifndef __XabslDecimalExpression_h_ #define __XabslDecimalExpression_h_ #include "XabslSymbols.h" namespace xabsl { // class prototypes used by symbol parameters / conditional expressions class BooleanExpression; class EnumeratedExpression; class Option; class State; /** * @class DecimalExpression * * Base class for all decimal expressions inside an option graph. * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class DecimalExpression { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const = 0; /** * Creates a decimal expression depending on the input. * @param input An input source for the intermediate code. It must be opened and read until * A position where a decimal expression starts. * @param errorHandler A reference to a ErrorHandler instance * @param symbols All available symbols * @param option The current option * @param state The current state */ static DecimalExpression* create(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ virtual ~DecimalExpression() = 0; /** * Creates a decimal expression depending on the input. * Uses the create() function to create decimal operands. * @param operand The expression to be created * @param input An input source for the intermediate code. It must be opened and read until * A position where a decimal operand starts. * @param errorHandler A reference to a ErrorHandler instance * @param symbols All available symbols * @param option The current option * @param state The current state * @return If the creation was successful */ static bool createOperand( DecimalExpression*& operand, InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); }; /** * @class DecimalValue * * Represents a decimal value. * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class DecimalValue : public DecimalExpression { public: /** * Constructor. Creates the value * @param input An input source for the intermediate code. It must be opened and read until * A position where a value starts. * @param errorHandler A reference to a ErrorHandler instance */ DecimalValue(InputSource& input, ErrorHandler& errorHandler); /** * Constructor. Creates an expression for a fixed decimal value * @param value The decimal value */ DecimalValue(double value) : value(value) {} /** Calculates the value of the decimal expression. */ virtual double getValue() const; private: /** The value */ double value; }; /** * @class DecimalOptionParameterRef * * Represents a reference to a decimal option parameter. * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class DecimalOptionParameterRef : public DecimalExpression { public: /** * Constructor. Creates the reference * @param input An input source for the intermediate code. It must be opened and read until * A position where the expression starts. * @param errorHandler A reference to a ErrorHandler instance * @param option The current option */ DecimalOptionParameterRef(InputSource& input, ErrorHandler& errorHandler, Option& option); /** Calculates the value of the decimal expression. */ virtual double getValue() const; private: /** A pointer to the parameter */ double* parameter; }; /** * @class ArithmeticOperator * * Base class for the +, -, *, / and % operator. * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class ArithmeticOperator : public DecimalExpression { public: /** * Creates the operator * @param operand1 The first operand * @param operand2 The second operand */ void create(DecimalExpression* operand1, DecimalExpression* operand2); /** Calculates the value of the decimal expression. */ virtual double getValue() const = 0; /** Destructor. Deletes the operands */ ~ArithmeticOperator(); protected: /** The first operand */ DecimalExpression* operand1; /** The second operand */ DecimalExpression* operand2; }; /** * @class PlusOperator * * Represents a + operator in the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class PlusOperator : public ArithmeticOperator { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const; }; /** * @class MinusOperator * * Represents a - operator in the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class MinusOperator : public ArithmeticOperator { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const; }; /** * @class MultiplyOperator * * Represents a * operator in the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class MultiplyOperator : public ArithmeticOperator { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const; }; /** * @class DivideOperator * * Represents a / operator in the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class DivideOperator : public ArithmeticOperator { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const; }; /** * @class ModOperator * * Represents a % operator in the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class ModOperator : public ArithmeticOperator { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const; }; /** * @class TimeRef * * Represents a time-of-option-execution or time-of-state-execution element in the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class TimeRef : public DecimalExpression { public: /** * Constructor * @param errorHandler A reference to a ErrorHandler instance * @param time the referenced time */ TimeRef(ErrorHandler& errorHandler, unsigned& time); /** Calculates the value of the decimal expression. */ virtual double getValue() const; private: /** The referenced time */ unsigned& time; }; /** * @class DecimalInputSymbolRef * * Represents a reference to a decimal input symbol. * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class DecimalInputSymbolRef : public DecimalExpression { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const; /** * Constructor. Creates the function call depending on the input. * @param input An input source for the intermediate code. It must be opened and read until * A position where the function reference starts. * @param errorHandler A reference to a ErrorHandler instance * @param symbols All available symbols * @param option The current option * @param state The current state */ DecimalInputSymbolRef(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ ~DecimalInputSymbolRef(); private: /** The referenced symbol */ DecimalInputSymbol* symbol; /** The parameter assignments of the referenced symbol */ ParameterAssignment* parameters; }; /** * @class DecimalOutputSymbolRef * * Represents a reference to a decimal input symbol. * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class DecimalOutputSymbolRef : public DecimalExpression { public: /** Calculates the value of the decimal expression. */ virtual double getValue() const; /** * Constructor. Creates the function call depending on the input. * @param input An input source for the intermediate code. It must be opened and read until * A position where the function reference starts. * @param errorHandler A reference to a ErrorHandler instance * @param symbols All available symbols */ DecimalOutputSymbolRef(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols); private: /** The referenced symbol */ DecimalOutputSymbol* symbol; }; /** * @class ConditionalDecimalExpression * * Represents an ANSI C (condition?expression:expression) question mark operator * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class ConditionalDecimalExpression : public DecimalExpression { public: /** * Constructor. Creates the expression * @param input An input source for the intermediate code. It must be opened and read until * A position where a expression starts. * @param errorHandler A reference to a ErrorHandler instance * @param symbols All available symbols * @param option The current option * @param state The current state */ ConditionalDecimalExpression(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ ~ConditionalDecimalExpression(); /** Calculates the value of the decimal expression. */ virtual double getValue() const; private: /** The condition */ BooleanExpression* condition; /** The expression that is returned when the condition evaluates true */ DecimalExpression* expression1; /** The expression that is returned when the condition evaluates false */ DecimalExpression* expression2; }; } // namespace #endif //__XabslDecimalExpression_h_ Up | Main Page | Generated at Wed Aug 19 17:32:28 2009.
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