Lemma is an Electromagnetics API
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LemmaObject.h 6.1KB

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  1. /* This file is part of Lemma, a geophysical modelling and inversion API */
  2. /* This Source Code Form is subject to the terms of the Mozilla Public
  3. * License, v. 2.0. If a copy of the MPL was not distributed with this
  4. * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  5. /**
  6. @file
  7. @author Trevor Irons
  8. @date 06-13-2016
  9. **/
  10. #ifndef __LEMMAOBJECT_H
  11. #define __LEMMAOBJECT_H
  12. #include "helper.h"
  13. #include "lemma.h"
  14. #include "yaml-cpp/yaml.h"
  15. #include <chrono>
  16. #include <memory>
  17. namespace Lemma {
  18. /**
  19. * \ingroup LemmaCore
  20. * \brief Abstract class providing common interface for Lemma Objects.
  21. * \details Lemma objects can be members of other Lemma, and may be members
  22. * of multiple objects. Since updates should be atomic, and objects
  23. * can be large, it becomes useful to count the number of
  24. * Classes an object is a member of.
  25. * Before C++-11, this was done internally in Lemma, with the inclusion of
  26. * more sophisticated smart pointers, this logic has been offloaded to the
  27. * standard. All Lemma objects should be created as C++-11 Smart pointers, using
  28. * the supplied New method. Calls to Delete are no longer necessary or available.
  29. */
  30. class LemmaObject {
  31. /**
  32. * Streams class information as YAML::Node
  33. */
  34. //friend YAML::Emitter& operator << (YAML::Emitter& out, const LemmaObject &ob) ;
  35. friend class LemmaObjectDeleter;
  36. public:
  37. // Needed because many derived classes have Eigen vectors as members,
  38. // causing alignment issues when vectorisation is enabled.
  39. EIGEN_MAKE_ALIGNED_OPERATOR_NEW
  40. // ==================== LIFECYCLE ==============================
  41. /**
  42. * Uses YAML to serialize this object.
  43. * @return a YAML::Node
  44. * FOR NOT LemmaObject does not write out any YAML info,
  45. * in the future the reference count could be logged? But the utility
  46. * of that is minimal.
  47. * @note Not every Lemma class needs to be Serializable, for instance HankelTransform
  48. * classes will never need to be Serialized. There may be a need to differentiate these
  49. * two families in to a LemmaInternalClass without serializing and perhaps this class for
  50. * all external classes that might need to be serialized.
  51. */
  52. virtual YAML::Node Serialize() const {
  53. std::cout.precision( 20 );
  54. YAML::Node node = YAML::Node();
  55. //node.SetStyle(YAML::EmitterStyle::Flow);
  56. node.SetTag( GetName() );
  57. std::time_t now = std::chrono::system_clock::to_time_t( std::chrono::system_clock::now() );
  58. std::string ser_time = std::string( std::ctime(&now) );
  59. ser_time.pop_back();
  60. node["Serialized"] = ser_time;
  61. node["Lemma_VERSION"] = LEMMA_VERSION;
  62. return node;
  63. };
  64. // ==================== OPERATORS ==============================
  65. // ==================== OPERATIONS ==============================
  66. // ==================== ACCESS ==============================
  67. // ==================== INQUIRY ==============================
  68. /** Returns the name of the underlying class; Run-time type information (RTTI). This approach
  69. Was chosen over typeid due to name mangling among various compilers, and the need for consistency
  70. in Serialized objects.
  71. */
  72. virtual std::string GetName() const;
  73. protected:
  74. // ==================== LIFECYCLE ==============================
  75. /** Protected default constructor. This is an abstract class and
  76. * cannot be instantiated.
  77. */
  78. LemmaObject ( );
  79. /** Protected DeSerializing constructor */
  80. LemmaObject (const YAML::Node& node);
  81. LemmaObject( const LemmaObject& ) = delete;
  82. /** Protected default destructor. This is an abstract class and
  83. * cannot be instantiated. Virtual is necessary so that if base class destructor is
  84. * called, we get the right behaviour.
  85. */
  86. virtual ~LemmaObject();
  87. private:
  88. // ==================== DATA MEMBERS ==============================
  89. /** ASCII string representation of the class name */
  90. static constexpr auto CName = "LemmaObject";
  91. }; // ----- end of class LemmaObject -----
  92. class LemmaObjectDeleter
  93. {
  94. public:
  95. void operator()(LemmaObject* p) { delete p; }
  96. };
  97. /////////////////////////////////////////////////////////////////
  98. // Error Classes
  99. /** Error called when DeSerializing breaks. If the node type is not the expected one
  100. * this error is thown.
  101. */
  102. class DeSerializeTypeMismatch : public std::runtime_error {
  103. public:
  104. DeSerializeTypeMismatch(const std::string& expected, const std::string& got);
  105. };
  106. /** If an assignment is made that is out of bounts, throw this.
  107. */
  108. class AssignmentOutOfBounds : public std::runtime_error {
  109. public:
  110. /** Throw when an assignment is out of bounds.
  111. * @param[in] ptr is a pointer to the class throwing the exception.
  112. */
  113. AssignmentOutOfBounds(LemmaObject *ptr);
  114. };
  115. /** If a pointer to a class is requested, but it is NULL valued, throw this
  116. */
  117. class RequestToReturnNullPointer : public std::runtime_error {
  118. public:
  119. /** Thrown when the pointer is NULL
  120. * @param[in] ptr is a pointer to the class throwing the exception.
  121. */
  122. RequestToReturnNullPointer(LemmaObject *ptr);
  123. };
  124. /** If an error in opening a .mat file is encountered, throw this.
  125. */
  126. class MatFileCannotBeOpened : public std::runtime_error {
  127. /** thown when a mat file fails to be opened.
  128. */
  129. public: MatFileCannotBeOpened();
  130. };
  131. /** Generic file I/O error. */
  132. class GenericFileIOError : public std::runtime_error {
  133. public: GenericFileIOError(LemmaObject *ptr, const std::string &filename);
  134. };
  135. }
  136. #endif // __LEMMAOBJECT_H