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LemmaObject.h 6.0KB

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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.SetTag( GetName() );
  56. std::time_t now = std::chrono::system_clock::to_time_t( std::chrono::system_clock::now() );
  57. std::string ser_time = std::string( std::ctime(&now) );
  58. ser_time.pop_back();
  59. node["Serialized"] = ser_time;
  60. node["Lemma_VERSION"] = LEMMA_VERSION;
  61. return node;
  62. };
  63. // ==================== OPERATORS ==============================
  64. // ==================== OPERATIONS ==============================
  65. // ==================== ACCESS ==============================
  66. // ==================== INQUIRY ==============================
  67. /** Returns the name of the underlying class; Run-time type information (RTTI). This approach
  68. Was chosen over typeid due to name mangling among various compilers, and the need for consistency
  69. in Serialized objects.
  70. */
  71. virtual std::string GetName() const;
  72. protected:
  73. // ==================== LIFECYCLE ==============================
  74. /** Protected default constructor. This is an abstract class and
  75. * cannot be instantiated.
  76. */
  77. LemmaObject ( );
  78. /** Protected DeSerializing constructor */
  79. LemmaObject (const YAML::Node& node);
  80. LemmaObject( const LemmaObject& ) = delete;
  81. /** Protected default destructor. This is an abstract class and
  82. * cannot be instantiated. Virtual is necessary so that if base class destructor is
  83. * called, we get the right behaviour.
  84. */
  85. virtual ~LemmaObject();
  86. private:
  87. // ==================== DATA MEMBERS ==============================
  88. /** ASCII string representation of the class name */
  89. static constexpr auto CName = "LemmaObject";
  90. }; // ----- end of class LemmaObject -----
  91. class LemmaObjectDeleter
  92. {
  93. public:
  94. void operator()(LemmaObject* p) { delete p; }
  95. };
  96. /////////////////////////////////////////////////////////////////
  97. // Error Classes
  98. /** Error called when DeSerializing breaks. If the node type is not the expected one
  99. * this error is thown.
  100. */
  101. class DeSerializeTypeMismatch : public std::runtime_error {
  102. public:
  103. DeSerializeTypeMismatch(const std::string& expected, const std::string& got);
  104. };
  105. /** If an assignment is made that is out of bounts, throw this.
  106. */
  107. class AssignmentOutOfBounds : public std::runtime_error {
  108. public:
  109. /** Throw when an assignment is out of bounds.
  110. * @param[in] ptr is a pointer to the class throwing the exception.
  111. */
  112. AssignmentOutOfBounds(LemmaObject *ptr);
  113. };
  114. /** If a pointer to a class is requested, but it is NULL valued, throw this
  115. */
  116. class RequestToReturnNullPointer : public std::runtime_error {
  117. public:
  118. /** Thrown when the pointer is NULL
  119. * @param[in] ptr is a pointer to the class throwing the exception.
  120. */
  121. RequestToReturnNullPointer(LemmaObject *ptr);
  122. };
  123. /** If an error in opening a .mat file is encountered, throw this.
  124. */
  125. class MatFileCannotBeOpened : public std::runtime_error {
  126. /** thown when a mat file fails to be opened.
  127. */
  128. public: MatFileCannotBeOpened();
  129. };
  130. /** Generic file I/O error. */
  131. class GenericFileIOError : public std::runtime_error {
  132. public: GenericFileIOError(LemmaObject *ptr, const std::string &filename);
  133. };
  134. }
  135. #endif // __LEMMAOBJECT_H