Lemma is an Electromagnetics API
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LemmaObject.h 5.9KB

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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. YAML::Node node = YAML::Node();
  54. node.SetTag( GetName() );
  55. std::time_t now = std::chrono::system_clock::to_time_t( std::chrono::system_clock::now() );
  56. node["Serialized"] = std::ctime(&now);
  57. return node;
  58. };
  59. // ==================== OPERATORS ==============================
  60. // ==================== OPERATIONS ==============================
  61. // ==================== ACCESS ==============================
  62. // ==================== INQUIRY ==============================
  63. /** Returns the name of the underlying class; Run-time type information (RTTI). This approach
  64. Was chosen over typeid due to name mangling among various compilers, and the need for consistency
  65. in Serialized objects.
  66. */
  67. virtual inline std::string GetName() const {
  68. return this->CName;
  69. }
  70. protected:
  71. // ==================== LIFECYCLE ==============================
  72. /** Protected default constructor. This is an abstract class and
  73. * cannot be instantiated.
  74. */
  75. LemmaObject ( );
  76. /** Protected DeSerializing constructor */
  77. LemmaObject (const YAML::Node& node);
  78. LemmaObject( const LemmaObject& ) = delete;
  79. /** Protected default destructor. This is an abstract class and
  80. * cannot be instantiated. Virtual is necessary so that if base class destructor is
  81. * called, we get the right behaviour.
  82. */
  83. virtual ~LemmaObject();
  84. private:
  85. // ==================== DATA MEMBERS ==============================
  86. /** ASCII string representation of the class name */
  87. static constexpr auto CName = "LemmaObject";
  88. }; // ----- end of class LemmaObject -----
  89. class LemmaObjectDeleter
  90. {
  91. public:
  92. void operator()(LemmaObject* p) { delete p; }
  93. };
  94. /////////////////////////////////////////////////////////////////
  95. // Error Classes
  96. /** Error called when DeSerializing breaks. If the node type is not the expected one
  97. * this error is thown.
  98. */
  99. class DeSerializeTypeMismatch : public std::runtime_error {
  100. public:
  101. DeSerializeTypeMismatch(const std::string& expected, const std::string& got);
  102. };
  103. /** If an assignment is made that is out of bounts, throw this.
  104. */
  105. class AssignmentOutOfBounds : public std::runtime_error {
  106. public:
  107. /** Throw when an assignment is out of bounds.
  108. * @param[in] ptr is a pointer to the class throwing the exception.
  109. */
  110. AssignmentOutOfBounds(LemmaObject *ptr);
  111. };
  112. /** If a pointer to a class is requested, but it is NULL valued, throw this
  113. */
  114. class RequestToReturnNullPointer : public std::runtime_error {
  115. public:
  116. /** Thrown when the pointer is NULL
  117. * @param[in] ptr is a pointer to the class throwing the exception.
  118. */
  119. RequestToReturnNullPointer(LemmaObject *ptr);
  120. };
  121. /** If an error in opening a .mat file is encountered, throw this.
  122. */
  123. class MatFileCannotBeOpened : public std::runtime_error {
  124. /** thown when a mat file fails to be opened.
  125. */
  126. public: MatFileCannotBeOpened();
  127. };
  128. /** Generic file I/O error. */
  129. class GenericFileIOError : public std::runtime_error {
  130. public: GenericFileIOError(LemmaObject *ptr, const std::string &filename);
  131. };
  132. }
  133. #endif // __LEMMAOBJECT_H