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XabslEngine Class Library Reference
XabslEnumeratedExpression.h Go to the documentation of this file. /** * @file XabslEnumeratedExpression.h * * Definition of EnumeratedExpression and derivates * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ #ifndef __XabslEnumeratedExpression_h_ #define __XabslEnumeratedExpression_h_ #include "XabslSymbols.h" #include "XabslDecimalExpression.h" namespace xabsl { /** * @class EnumeratedExpression * * Base class for all enumerated expressions inside an option graph. * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class EnumeratedExpression { public: /** Evaluates the enumerated expression. */ virtual int getValue() const = 0; /** * Creates an enumerated expression depending on the input. * @param enumeration A reference to the enumeration which is the domain of this expression * @param input An input source for the intermediate code. It must be opened and read until * A position where a enumerated 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 EnumeratedExpression* create(const Enumeration* enumeration, InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** * Creates an enumerated expression depending on the input. * Uses the create() function to create enumerated operands. * @param operand The expression to be created * @param enumeration A reference to the enumeration which is the domain of this expression * @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( const EnumeratedExpression*& operand, const Enumeration* enumeration, InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ virtual ~EnumeratedExpression() = 0; const Enumeration* enumeration; }; /** * @class EnumeratedValue * * Represents a enumerated value. * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class EnumeratedValue : public EnumeratedExpression { public: /** * Constructor. Creates the value * @param enumeration A reference to the enumeration which is the domain of this expression * @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 */ EnumeratedValue(const Enumeration* enumeration, InputSource& input, ErrorHandler& errorHandler); /** * Constructor. Creates an expression for a fixed enumerated value * @param value The enumerated value */ EnumeratedValue(const Enumeration* enumeration, int value) : value(value) { this->enumeration = enumeration; } /** Calculates the value of the decimal expression. */ virtual int getValue() const; private: /** The value */ int value; }; /** * @class EnumeratedOptionParameterRef * * Represents a reference to a enumerated option parameter. * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> */ class EnumeratedOptionParameterRef : public EnumeratedExpression { public: /** * Constructor. Creates the reference * @param enumeration A reference to the enumeration which is the domain of this expression * @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 */ EnumeratedOptionParameterRef(const Enumeration* enumeration, InputSource& input, ErrorHandler& errorHandler, Option& option); /** Calculates the value of the enumerated expression. */ virtual int getValue() const; private: /** A pointer to the parameter */ int* parameter; }; /** * @class EnumeratedInputSymbolRef * * Represents an 'enumerated-input-symbol-ref' element of the option graph * * @author <a href="http://www.sim.informatik.tu-darmstadt.de/pers/card/risler.html">Max Risler</a> * @author <a href="http://www.martin-loetzsch.de">Martin Loetzsch</a> */ class EnumeratedInputSymbolRef : public EnumeratedExpression { public: /** * Constructor. Creates the element * @param enumeration A reference to the enumeration which is the domain of this 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 */ EnumeratedInputSymbolRef(const Enumeration* enumeration, InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ ~EnumeratedInputSymbolRef(); /** Evaluates the enumerated expression. */ virtual int getValue() const; private: /** The referenced symbol */ EnumeratedInputSymbol* symbol; /** The parameter assignments of the referenced symbol */ ParameterAssignment* parameters; }; /** * @class EnumeratedOutputSymbolRef * * Represents a reference to a enumerated 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 EnumeratedOutputSymbolRef : public EnumeratedExpression { public: /** Calculates the value of the enumerated expression. */ virtual int getValue() const; /** * Constructor. Creates the function call depending on the input. * @param enumeration A reference to the enumeration which is the domain of this expression * @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 */ EnumeratedOutputSymbolRef(const Enumeration* enumeration, InputSource& input, ErrorHandler& errorHandler, Symbols& symbols); private: /** The referenced symbol */ const EnumeratedOutputSymbol* symbol; }; /** * @class ConditionalEnumeratedExpression * * 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 ConditionalEnumeratedExpression : public EnumeratedExpression { 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 */ ConditionalEnumeratedExpression(const Enumeration* enumeration, InputSource& input, ErrorHandler& errorHandler, Symbols& symbols, Option& option, State& state); /** Destructor */ ~ConditionalEnumeratedExpression(); /** Calculates the value of the decimal expression. */ virtual int getValue() const; private: /** The condition */ const BooleanExpression* condition; /** The expression that is returned when the condition evaluates true */ const EnumeratedExpression* expression1; /** The expression that is returned when the condition evaluates false */ const EnumeratedExpression* expression2; }; } // namespace #endif //__XabslEnumeratedExpression_h_ Up | Main Page | Generated at Wed Aug 19 17:32:29 2009.
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