1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
3 // File: ModelAPI_Expression.h
5 // Author: Sergey POKHODENKO
7 #ifndef ModelAPI_Expression_H_
8 #define ModelAPI_Expression_H_
16 /**\class ModelAPI_Expression
18 * \brief Expression for calculated values.
20 class ModelAPI_Expression
23 /// To virtually destroy the fields of successors
24 MODELAPI_EXPORT virtual ~ModelAPI_Expression();
26 /// Returns true if attribute was initialized by some value
27 MODELAPI_EXPORT virtual bool isInitialized();
29 /// Makes attribute initialized
30 MODELAPI_EXPORT virtual void setInitialized();
32 /// Sets the text of this Expression
33 MODELAPI_EXPORT virtual void setText(const std::string& theText) = 0;
35 /// Returns the text of this Expression
36 MODELAPI_EXPORT virtual std::string text() const = 0;
38 /// Allows to set expression (text) as invalid (by the parameters listener)
39 MODELAPI_EXPORT virtual void setInvalid(const bool theFlag) = 0;
41 /// Returns true if text is invalid
42 MODELAPI_EXPORT virtual bool isInvalid() = 0;
44 /// Allows to set expression (text) error (by the parameters listener)
45 MODELAPI_EXPORT virtual void setError(const std::string& theError) = 0;
47 /// Returns an expression error
48 MODELAPI_EXPORT virtual std::string error() = 0;
50 /// Defines the used parameters (by the parameters listener)
51 MODELAPI_EXPORT virtual
52 void setUsedParameters(const std::set<std::string>& theUsedParameters) = 0;
54 /// Returns the used parameters
55 MODELAPI_EXPORT virtual std::set<std::string> usedParameters() const = 0;
57 /// Returns True if the given string can be defined as a name of an expression variable
58 MODELAPI_EXPORT static bool isVariable(const std::string& theString);
61 /// Objects are created for features automatically
62 MODELAPI_EXPORT ModelAPI_Expression();
63 /// Reinitializes the internal state of the attribute (may be needed on undo/redo, abort, etc)
64 MODELAPI_EXPORT virtual void reinit() = 0;
65 /// Resets attribute to deafult state.
66 MODELAPI_EXPORT virtual void reset() {
67 myIsInitialized = false;
70 bool myIsInitialized; ///< is some value assigned to this attribute
72 friend class Model_Data;
73 friend class Model_AttributeDouble;
74 friend class Model_AttributeInteger;
75 friend class GeomData_Point;
76 friend class GeomData_Point2D;
80 /**\class ModelAPI_ExpressionDouble
82 * \brief Expression for calculated double values.
84 class ModelAPI_ExpressionDouble : public virtual ModelAPI_Expression
87 /// Defines the double value
88 MODELAPI_EXPORT virtual void setValue(const double theValue) = 0;
90 /// Returns the double value
91 MODELAPI_EXPORT virtual double value() = 0;
94 /// Objects are created for features automatically
95 MODELAPI_EXPORT ModelAPI_ExpressionDouble();
97 friend class Model_Data;
101 /**\class ModelAPI_ExpressionInteger
103 * \brief Expression for calculated integer values.
105 class ModelAPI_ExpressionInteger : public virtual ModelAPI_Expression
108 /// Defines the integer value
109 MODELAPI_EXPORT virtual void setValue(const int theValue) = 0;
111 /// Returns the integer value
112 MODELAPI_EXPORT virtual int value() = 0;
115 /// Objects are created for features automatically
116 MODELAPI_EXPORT ModelAPI_ExpressionInteger();
118 friend class Model_Data;
122 //! Smart pointers for objects
123 typedef std::shared_ptr<ModelAPI_Expression> ExpressionPtr;
124 typedef std::shared_ptr<ModelAPI_ExpressionDouble> ExpressionDoublePtr;
125 typedef std::shared_ptr<ModelAPI_ExpressionInteger> ExpressionIntegerPtr;