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XabslEngine Class Library Reference
XabslBooleanExpression.h Go to the documentation of this file. /** * @file XabslBooleanExpression.h * * Definition of BooleanExpression 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> */ #ifndef __XabslBooleanExpression_h_ #define __XabslBooleanExpression_h_ #include "XabslDecimalExpression.h" namespace xabsl { /** * @class BooleanExpression * * Base class for all boolean 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 BooleanExpression { public: /** Evaluates the boolean expression. */ virtual bool getValue() const = 0; /** * Creates a boolean 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 boolean 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 BooleanExpression* create(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ virtual ~BooleanExpression() = 0; /** * Creates a boolean expression depending on the input. * Uses the create() function to create boolean 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 boolean 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( BooleanExpression*& operand, InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); }; /** * @class BooleanValue * * Represents a boolean value. * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class BooleanValue : public BooleanExpression { 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 */ BooleanValue(InputSource& input, ErrorHandler& errorHandler); /** * Constructor. Creates an expression for a fixed boolean value * @param value The boolean value */ BooleanValue(bool value) : value(value) {} /** Calculates the value of the decimal expression. */ virtual bool getValue() const; private: /** The value */ bool value; }; /** * @class BooleanOptionParameterRef * * Represents a reference to a decimal option parameter. * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class BooleanOptionParameterRef : public BooleanExpression { 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 */ BooleanOptionParameterRef(InputSource& input, ErrorHandler& errorHandler, Option& option); /** Calculates the value of the boolean expression. */ virtual bool getValue() const; private: /** A pointer to the parameter */ bool* parameter; }; /** * @class AndOperator * * Represents an 'and' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class AndOperator : public BooleanExpression { public: /** Constructor */ AndOperator(); /** Destructor. Deletes the two operands */ ~AndOperator(); /** Evaluates the boolean expression.*/ virtual bool getValue() const; /** Adds an operand to the operands array */ void addOperand(BooleanExpression* operand); private: /** the 2+n operands of the operator */ Array<BooleanExpression*> operands; }; /** * @class OrOperator * * Represents an 'or' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class OrOperator : public BooleanExpression { public: /** Constructor */ OrOperator(); /** Destructor. Deletes the two operands */ ~OrOperator(); /** Evaluates the boolean expression. */ virtual bool getValue() const; /** Adds an operand to the operands array */ void addOperand(BooleanExpression* operand); private: /** the 2+n operands of the operator */ Array<BooleanExpression*> operands; }; /** * @class NotOperator * * Represents an 'not' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class NotOperator : public BooleanExpression { public: /** * Constructor. Creates the element. * @param operand1 A boolean expression */ NotOperator(BooleanExpression* operand1); /** Destructor. Deletes the operand */ ~NotOperator(); /** Evaluates the boolean expression. */ virtual bool getValue() const; private: /** operand 1 */ BooleanExpression* operand1; }; /** * @class BooleanInputSymbolRef * * Represents an 'boolean-input-symbol-ref' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class BooleanInputSymbolRef : public BooleanExpression { public: /** * Constructor. Creates the element * @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 */ BooleanInputSymbolRef(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ ~BooleanInputSymbolRef(); /** Evaluates the boolean expression. */ virtual bool getValue() const; private: /** The referenced symbol */ BooleanInputSymbol* symbol; /** The parameter assignments of the referenced symbol */ ParameterAssignment* parameters; }; /** * @class BooleanOutputSymbolRef * * Represents a reference to a boolean input symbol. * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class BooleanOutputSymbolRef : public BooleanExpression { public: /** Calculates the value of the boolean expression. */ virtual bool 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 */ BooleanOutputSymbolRef(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols); private: /** The referenced symbol */ BooleanOutputSymbol* symbol; }; /** * @class SubsequentOptionReachedTargetStateCondition * * Represents an 'subsequent-option-reached-target-state' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class SubsequentOptionReachedTargetStateCondition : public BooleanExpression { public: /** * Constructor. Creates the element. * @param errorHandler A reference to a ErrorHandler instance * @param state The current state */ SubsequentOptionReachedTargetStateCondition( ErrorHandler& errorHandler, State& state); /** Evaluates the boolean expression. */ virtual bool getValue() const; private: /** The state */ State& state; }; /** * @class ConflictCondition * * Represents an 'conflict' element of the option graph * * @author Max Risler */ class ConflictCondition : public BooleanExpression { public: /** * Constructor. Creates the element. * @param errorHandler A reference to a ErrorHandler instance * @param state The current state */ ConflictCondition( ErrorHandler& errorHandler, State& state); /** Evaluates the boolean expression. */ virtual bool getValue() const; private: /** The state */ State& state; }; /** * @class EnumeratedInputSymbolComparison * * Represents an 'enumerated-input-symbol-comparison' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class EnumeratedInputSymbolComparison : public BooleanExpression { public: /** * Constructor. Creates the element * @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 */ EnumeratedInputSymbolComparison(InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor. Deletes the two operands */ ~EnumeratedInputSymbolComparison(); /** Evaluates the boolean expression.*/ virtual bool getValue() const; protected: /** operand 1 */ const EnumeratedExpression* operand1; /** operand 2 */ const EnumeratedExpression* operand2; }; /** * @class RelationalAndEqualityOperator * * Base class for the operators <, <=, >, >=, == and != * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class RelationalAndEqualityOperator : public BooleanExpression { public: /** * Creates the element. * @param operand1 A decimal expression * @param operand2 A decimal expression */ void create(DecimalExpression* operand1, DecimalExpression* operand2); /** Destructor. Deletes the two operands */ ~RelationalAndEqualityOperator(); /** Evaluates the boolean expression.*/ virtual bool getValue() const = 0; protected: /** operand 1 */ DecimalExpression* operand1; /** operand 2 */ DecimalExpression* operand2; }; /** * @class EqualToOperator * * Represents an 'equal-to' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class EqualToOperator : public RelationalAndEqualityOperator { public: /** Evaluates the boolean expression.*/ virtual bool getValue() const; }; /** * @class NotEqualToOperator * * Represents an 'not-equal-to' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class NotEqualToOperator : public RelationalAndEqualityOperator { public: /** Evaluates the boolean expression.*/ virtual bool getValue() const; }; /** * @class LessThanOperator * * Represents an 'less-than' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class LessThanOperator : public RelationalAndEqualityOperator { public: /** Evaluates the boolean expression.*/ virtual bool getValue() const; }; /** * @class LessThanOrEqualToOperator * * Represents an 'less-than-or-equal-to' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class LessThanOrEqualToOperator : public RelationalAndEqualityOperator { public: /** Evaluates the boolean expression.*/ virtual bool getValue() const; }; /** * @class GreaterThanOperator * * Represents an 'greater-than' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class GreaterThanOperator : public RelationalAndEqualityOperator { public: /** Evaluates the boolean expression.*/ virtual bool getValue() const; }; /** * @class GreaterThanOrEqualToOperator * * Represents an 'greater-than-or-equal-to' element of the option graph * * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class GreaterThanOrEqualToOperator : public RelationalAndEqualityOperator { public: /** Evaluates the boolean expression.*/ virtual bool getValue() const; }; } // namespace #endif //__XabslBooleanExpression_h_ Up | Main Page | Generated at Wed Aug 19 17:32:28 2009.
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