/[svn]/libgig/trunk/src/Serialization.cpp

Diff of /libgig/trunk/src/Serialization.cpp

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-revision 3150 by schoenebeck,
Fri May  5 18:42:06 2017 UTC
+revision 3774 by schoenebeck,
Tue May 19 14:55:48 2020 UTC
 Line 1
  /***************************************************************************
   *                                                                         *
-  *   Copyright (C) 2017 Christian Schoenebeck                              *
+  *   Copyright (C) 2017-2020 Christian Schoenebeck                         *
-  *                      <cuse@users.sourceforge.net>                       *
+  *                           <cuse@users.sourceforge.net>                  *
   *                                                                         *
   *   This library is part of libgig.                                       *
   *                                                                         *
 Line 21
   *   MA  02111-1307  USA                                                   *
   ***************************************************************************/
+ // enable implementation specific declarations in Serialization.h required to
+ // build this C++ unit, which should be ignored in the public API though
+ #define LIBGIG_SERIALIZATION_INTERNAL 1
  #include "Serialization.h"
  #include <iostream>
- #include <assert.h>
  #include <string.h> // for memcpy()
  #include <stdlib.h> // for atof()
+ #ifdef _MSC_VER
+ # include <windows.h>
+ # include <dbghelp.h>
+ #else
+ # include <cxxabi.h>
+ #endif
  #include "helper.h"
+ #define LIBGIG_EPOCH_TIME ((time_t)0)
  namespace Serialization {
      // *************** DataType ***************
      // *
      static UID _createNullUID() {
-         return (UID) { NULL, 0 };
+         const UID uid = { NULL, 0 };
+         return uid;
      }
      const UID NO_UID = _createNullUID();
+     /** @brief Check whether this is a valid unique identifier.
+      *
+      * Returns @c false if this UID can be considered an invalid unique
+      * identifier. This is for example the case if this UID object was not
+      * explicitly set to some certain meaningful unique identifier value, or if
+      * this UID object was intentionally assigned the constant @c NO_UID value.
+      * Both represent essentially an UID object which is all zero.
+      *
+      * Note that this class also implements the @c bool operator, both return
+      * the same boolean result.
+      */
      bool UID::isValid() const {
          return id != NULL && id != (void*)-1 && size;
      }
-Line 48 
 namespace Serialization {
+Line 70 
 namespace Serialization {
      // *************** DataType ***************
      // *
+     /** @brief Default constructor (as "invalid" DataType).
+      *
+      * Initializes a DataType object as being an "invalid" DataType object.
+      * Thus calling isValid(), after creating a DataType object with this
+      * constructor, would return @c false.
+      *
+      * To create a valid and meaningful DataType object instead, call the static
+      * function DataType::dataTypeOf() instead.
+      */
      DataType::DataType() {
          m_size = 0;
          m_isPointer = false;
      }
+     /** @brief Constructs a valid DataType object.
+      *
+      * Initializes this object as "valid" DataType object, with specific and
+      * useful data type information.
+      *
+      * This is a protected constructor which should not be called directly by
+      * applications, as its argument list is somewhat implementation specific
+      * and might change at any time. Applications should call the static
+      * function DataType::dataTypeOf() instead.
+      *
+      * @param isPointer - whether pointer type (i.e. a simple memory address)
+      * @param size - native size of data type in bytes (i.e. according to
+      *               @c sizeof() C/C++ keyword)
+      * @param baseType - this framework's internal name for specifying the base
+      *                   type in a coarse way, which must be either one of:
+      *                   "int8", "uint8", "int16", "uint16", "int32", "uint32",
+      *                   "int64", "uint64", "bool", "real32", "real64",
+      *                   "String", "enum", "union" or "class"
+      * @param customType - this is only used for base types "enum", "union" or
+      *                     "class", in which case this identifies the user
+      *                     defined type name (e.g. "Foo" for @c class @c Foo ),
+      *                     for all other types this is empty
+      */
      DataType::DataType(bool isPointer, int size, String baseType, String customType) {
          m_size = size;
          m_isPointer = isPointer;
-Line 60 
 namespace Serialization {
+Line 114 
 namespace Serialization {
          m_customTypeName = customType;
      }
+     /** @brief Check if this is a valid DataType object.
+      *
+      * Returns @c true if this DataType object is reflecting a valid data type.
+      * The default constructor creates DataType objects initialized to be
+      * "invalid" DataType objects by default. That way one can detect whether
+      * a DataType object was ever assigned to something meaningful.
+      *
+      * Note that this class also implements the @c bool operator, both return
+      * the same boolean result.
+      */
      bool DataType::isValid() const {
          return m_size;
      }
+     /** @brief Whether this is reflecting a C/C++ pointer type.
+      *
+      * Returns @true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a C/C++ pointer type.
+      */
      bool DataType::isPointer() const {
          return m_isPointer;
      }
+     /** @brief Whether this is reflecting a C/C++ @c struct or @c class type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a C/C++ @c struct or @c class
+      * type, with one exception: @c String objects are handled by this framework
+      * as if they were a primitive type.
+      *
+      * Note that in the following example:
+      * @code
+      * struct Foo {
+      *     int  a;
+      *     bool b;
+      * };
+      * Foo foo;
+      * Foo* pFoo;
+      * @endcode
+      * the DataType objects of both @c foo, as well as of the C/C++ pointer
+      * @c pFoo would both return @c true for isClass() here!
+      *
+      * @see isPointer()
+      */
      bool DataType::isClass() const {
          return m_baseTypeName == "class";
      }
+     /** @brief Whether this is reflecting a fundamental C/C++ data type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a primitive, fundamental C/C++
+      * data type. Those are fundamental data types which are already predefined
+      * by the C/C++ language, for example: @c char, @c int, @c float, @c double,
+      * @c bool, but also @c String objects and @b any pointer types like
+      * @c int*, @c double**, but including pointers to user defined types like:
+      * @code
+      * struct Foo {
+      *     int  a;
+      *     bool b;
+      * };
+      * Foo* pFoo;
+      * @endcode
+      * So the DataType object of @c pFoo in the latter example would also return
+      * @c true for isPrimitive() here!
+      *
+      * @see isPointer()
+      */
      bool DataType::isPrimitive() const {
          return !isClass();
      }
+     /** @brief Whether this is a C++ @c String data type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a C++ @c String object (a.k.a.
+      * @c std::string from the C++ STL).
+      *
+      * Note that this framework handles @c String objects as if they were a
+      * fundamental, primitive C/C++ data type, so @c isPrimitive() returns
+      * @c true for strings.
+      */
+     bool DataType::isString() const {
+         return m_baseTypeName == "String";
+     }
+     /** @brief Whether this is an integer C/C++ data type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a (fundamental, primitive)
+      * integer data type. So these are all @c int and @c unsigned @c int types
+      * of any size. It does not include floating point ("real") types though.
+      *
+      * You may use isSigned() to further check whether this data type allows
+      * negative numbers.
+      *
+      * Note that this method also returns @c true on integer pointer types!
+      *
+      * @see isPointer()
+      */
      bool DataType::isInteger() const {
          return m_baseTypeName.substr(0, 3) == "int" ||
                 m_baseTypeName.substr(0, 4) == "uint";
      }
+     /** @brief Whether this is a floating point based C/C++ data type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a (fundamental, primitive)
+      * floating point based data type. So these are currently the C/C++ @c float
+      * and @c double types. It does not include integer types though.
+      *
+      * Note that this method also returns @c true on @c float pointer and
+      * @c double pointer types!
+      *
+      * @see isPointer()
+      */
      bool DataType::isReal() const {
          return m_baseTypeName.substr(0, 4) == "real";
      }
+     /** @brief Whether this is a boolean C/C++ data type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a (fundamental, primitive)
+      * boolean data type. So this is the case for the C++ @c bool data type.
+      * It does not include integer or floating point types though.
+      *
+      * Note that this method also returns @c true on @c bool pointer types!
+      *
+      * @see isPointer()
+      */
      bool DataType::isBool() const {
          return m_baseTypeName == "bool";
      }
+     /** @brief Whether this is a C/C++ @c enum data type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a user defined enumeration
+      * data type. So this is the case for all C/C++ @c enum data types.
+      * It does not include integer (or even floating point) types though.
+      *
+      * Note that this method also returns @c true on @c enum pointer types!
+      *
+      * @see isPointer()
+      */
      bool DataType::isEnum() const {
          return m_baseTypeName == "enum";
      }
+     /** @brief Whether this is a signed integer C/C++ data type.
+      *
+      * Returns @c true if the respective native C/C++ object, member or variable
+      * (this DataType instance is reflecting) is a (fundamental, primitive)
+      * signed integer data type. This is the case for are all @c unsigned
+      * @c int C/C++ types of any size. For all floating point ("real") based
+      * types this method returns @c false though!
+      *
+      * Note that this method also returns @c true on signed integer pointer
+      * types!
+      *
+      * @see isInteger();
+      */
      bool DataType::isSigned() const {
          return m_baseTypeName.substr(0, 3) == "int" ||
                 isReal();
      }
+     /** @brief Comparison for equalness.
+      *
+      * Returns @c true if the two DataType objects being compared can be
+      * considered to be "equal" C/C++ data types. They are considered to be
+      * equal if their underlying C/C++ data types are exactly identical. For
+      * example comparing @c int and @c unsigned int data types are considere to
+      * be @b not equal, since they are differently signed. Furthermore @c short
+      * @c int and @c long @c int would also not be considered to be equal, since
+      * they do have a different memory size. Additionally pointer type
+      * characteristic is compared as well. So a @c double type and @c double*
+      * type are also considered to be not equal data types and hence this method
+      * would return @c false.
+      *
+      * As an exception here, classes and structs with the same class/struct name
+      * but different sizes are also considered to be "equal". This relaxed
+      * requirement is necessary to retain backward compatiblity to older
+      * versions of the same native C++ classes/structs.
+      */
      bool DataType::operator==(const DataType& other) const {
          return m_baseTypeName   == other.m_baseTypeName &&
                 m_customTypeName == other.m_customTypeName &&
-                m_size           == other.m_size &&
+                (m_size == other.m_size || (isClass() && other.isClass())) &&
                 m_isPointer      == other.m_isPointer;
      }
+     /** @brief Comparison for inequalness.
+      *
+      * Returns the inverse result of what DataType::operator==() would return.
+      * So refer to the latter for more details.
+      */
      bool DataType::operator!=(const DataType& other) const {
          return !operator==(other);
      }
+     /** @brief Smaller than comparison.
+      *
+      * Returns @c true if this DataType object can be consider to be "smaller"
+      * than the @a other DataType object being compared with. This operator
+      * is actually quite arbitrarily implemented and may change at any time,
+      * and thus result for the same data types may change in future at any time.
+      *
+      * This operator is basically implemented for allowing this DataType class
+      * to be used with various standard template library (STL) classes, which
+      * require sorting operators to be implemented.
+      */
      bool DataType::operator<(const DataType& other) const {
          return m_baseTypeName  < other.m_baseTypeName ||
                (m_baseTypeName == other.m_baseTypeName &&
-                m_customTypeName  < other.m_customTypeName ||
+               (m_customTypeName  < other.m_customTypeName ||
                (m_customTypeName == other.m_customTypeName &&
-                m_size  < other.m_size ||
+               (m_size  < other.m_size ||
                (m_size == other.m_size &&
-                m_isPointer < other.m_isPointer)));
+                m_isPointer < other.m_isPointer)))));
      }
+     /** @brief Greater than comparison.
+      *
+      * Returns @c true if this DataType object can be consider to be "greater"
+      * than the @a other DataType object being compared with. This operator
+      * is actually quite arbitrarily implemented and may change at any time,
+      * and thus result for the same data types may change in future at any time.
+      *
+      * This operator is basically implemented for allowing this DataType class
+      * to be used with various standard template library (STL) classes, which
+      * require sorting operators to be implemented.
+      */
      bool DataType::operator>(const DataType& other) const {
          return !(operator==(other) || operator<(other));
      }
+     /** @brief Human readable long description for this data type.
+      *
+      * Returns a human readable long description for this data type, designed
+      * for the purpose for being displayed to the user. Note that the
+      * implementation for this method and thus the precise textual strings
+      * returned by this method, may change at any time. So you should not rely
+      * on precise strings for certain data types, and you should not use the
+      * return values of this method for comparing data types with each other.
+      *
+      * This class implements various comparison operators, so you should use
+      * them for comparing DataTypes objects instead.
+      *
+      * @see baseTypeName(), customTypeName()
+      */
      String DataType::asLongDescr() const {
-         //TODO: Demangling of C++ raw type names
          String s = m_baseTypeName;
          if (!m_customTypeName.empty())
-             s += " " + m_customTypeName;
+             s += " " + customTypeName(true);
          if (isPointer())
              s += " pointer";
          return s;
      }
+     /** @brief The base type name of this data type.
+      *
+      * Returns a textual short string identifying the basic type of name of this
+      * data type. For example for a 32 bit signed integer data type this method
+      * would return @c "int32". For all user defined C/C++ @c enum types this
+      * method would return "enum". For all user defined C/C++ @c struct @b and
+      * @c class types this method would return "class" for both. Note that the
+      * precise user defined type name (of i.e. @c enum, @c struct and @c class
+      * types) is not included in the string returned by this method, use
+      * customTypeName() to retrieve that information instead.
+      *
+      * The precise textual strings returned by this method are guaranteed to
+      * retain equal with future versions of this framework. So you can rely on
+      * them for using the return values of this method for comparison tasks in
+      * your application. Note however that this class also implements various
+      * comparison operators.
+      *
+      * Further it is important to know that this method returns the same string
+      * for pointers and non-pointers of the same underlying data type. So in the
+      * following example:
+      * @code
+      * #include <stdint.h>
+      * uint64_t i;
+      * uint64_t* pi;
+      * @endcode
+      * this method would return for both @c i and @c pi the string @c "uint64" !
+      *
+      * @see isPointer(), customTypeName()
+      */
+     String DataType::baseTypeName() const {
+         return m_baseTypeName;
+     }
+     /** @brief The user defined C/C++ data type name of this data type.
+      *
+      * Call this method on user defined C/C++ data types like @c enum, @c struct
+      * and @c class types to retrieve the user defined type name portion of
+      * those data types. Note that this method is only intended for such user
+      * defined data types. For all fundamental, primitive data types (like i.e.
+      * @c int) this method returns an empty string instead.
+      *
+      * This method takes an optional boolean argument @b demangle, which allows
+      * you define whether you are interested in the raw C++ type name or rather
+      * the demangled custom type name. By default this method returns the raw
+      * C++ type name. The raw C++ type name is the one that is actually used
+      * in the compiled binaries and should be preferred for comparions tasks.
+      * The demangled C++ type name is a human readable representation of the
+      * type name instead, which you may use for displaying the user defined type
+      * name portion to the user, however you should not use the demangled
+      * representation for comparison tasks.
+      *
+      * Note that in the following example:
+      * @code
+      * struct Foo {
+      *     int  a;
+      *     bool b;
+      * };
+      * Foo foo;
+      * Foo* pFoo;
+      * @endcode
+      * this method would return the same string for both @c foo and @c pFoo !
+      * In the latter example @c customTypeName(true) would return for both
+      * @c foo and @c pFoo the string @c "Foo" as return value of this method.
+      *
+      * @b Windows: please note that the current implementation of this method
+      * on Windows is @b not thread safe!
+      *
+      * @see isPointer(), baseTypeName()
+      */
+     String DataType::customTypeName(bool demangle) const {
+         if (!demangle) return m_customTypeName;
+ #ifdef _MSC_VER
+         const size_t MAXLENGTH = 1024;
+         char result[MAXLENGTH];
+         //FIXME: calling UnDecorateSymbolName() is not thread safe!
+         //Skip the first char
+         size_t size = UnDecorateSymbolName(m_customTypeName.c_str() +1, result, MAXLENGTH, UNDNAME_32_BIT_DECODE | UNDNAME_NO_ARGUMENTS);
+         if (size)
+         {
+             return result;
+         }
+         return m_customTypeName;
+ #else
+         int status;
+         char* result =
+             abi::__cxa_demangle(m_customTypeName.c_str(), 0, 0, &status);
+         String sResult = result;
+         free(result);
+         return (status == 0) ? sResult : m_customTypeName;
+ #endif
+     }
      // *************** Member ***************
      // *
+     /** @brief Default constructor.
+      *
+      * Initializes a Member object as being an "invalid" Member object.
+      * Thus calling isValid(), after creating a Member object with this
+      * constructor, would return @c false.
+      *
+      * You are currently not supposed to create (meaningful) Member objects on
+      * your own. This framework automatically create such Member objects for
+      * you instead.
+      *
+      * @see Object::members()
+      */
      Member::Member() {
          m_uid = NO_UID;
          m_offset = 0;
-Line 148 
 namespace Serialization {
+Line 496 
 namespace Serialization {
          m_type = type;
      }
+     /** @brief Unique identifier of this member instance.
+      *
+      * Returns the unique identifier of the original C/C++ member instance of
+      * your C++ class. It is important to know that this unique identifier is
+      * not meant to be unique for Member instances themselves, but it is rather
+      * meant to be unique for the original native C/C++ data these Member
+      * instances are representing. So that means no matter how many individual
+      * Member objects are created, as long as they are representing the same
+      * original native member variable of the same original native
+      * instance of your C++ class, then all those separately created Member
+      * objects return the same unique identifier here.
+      *
+      * @see UID for more details
+      */
+     UID Member::uid() const {
+         return m_uid;
+     }
+     /** @brief Name of the member.
+      *
+      * Returns the name of the native C/C++ member variable as originally typed
+      * in its C++ source code. So in the following example:
+      * @code
+      * struct Foo {
+      *     int  a;
+      *     bool b;
+      *     double someValue;
+      * };
+      * @endcode
+      * this method would usually return @c "a" for the first member of object
+      * instances of your native C/C++ @c struct @c Foo, and this method would
+      * usually return @c "someValue" for its third member.
+      *
+      * Note that when you implement the @c serialize() method of your own C/C++
+      * clases or strucs, you are able to override defining the precise name of
+      * your members. In that case this method would of course return the member
+      * names as explicitly forced by you instead.
+      */
+     String Member::name() const {
+         return m_name;
+     }
+     /** @brief Offset of member in its containing parent data structure.
+      *
+      * Returns the offset of this member (in bytes) within its containing parent
+      * user defined data structure or class. So in the following example:
+      * @code
+      * #include <stdint.h>
+      * struct Foo __attribute__ ((__packed__)) {
+      *     int32_t a;
+      *     bool b;
+      *     double c;
+      * };
+      * @endcode
+      * this method would typically return @c 0 for member @c a, @c 4 for member
+      * @c b and @c 5 for member @c c. As you have noted in the latter example,
+      * the structure @c Foo was declared to have "packed" data members. That
+      * means the compiler is instructed to add no memory spaces between the
+      * individual members. Because by default the compiler might add memory
+      * spaces between individual members to align them on certain memory address
+      * boundaries for increasing runtime performance while accessing the
+      * members. So if you declared the previous example without the "packed"
+      * attribute like:
+      * @code
+      * #include <stdint.h>
+      * struct Foo {
+      *     int32_t a;
+      *     bool b;
+      *     double c;
+      * };
+      * @endcode
+      * then this method would usually return a different offset for members
+      * @c b and @c c instead. For most 64 bit architectures this example would
+      * now still return @c 0 for member @c a, but @c 8 for member @c b and @c 16
+      * for member @c c.
+      */
+     size_t Member::offset() const {
+         return m_offset;
+     }
+     /** @brief C/C++ Data type of this member.
+      *
+      * Returns the precise data type of the original native C/C++ member.
+      */
+     const DataType& Member::type() const {
+         return m_type;
+     }
+     /** @brief Check if this is a valid Member object.
+      *
+      * Returns @c true if this Member object is reflecting a "valid" member
+      * object. The default constructor creates Member objects initialized to be
+      * "invalid" Member objects by default. That way one can detect whether
+      * a Member object was ever assigned to something meaningful.
+      *
+      * Note that this class also implements the @c bool operator, both return
+      * the same boolean result value.
+      */
      bool Member::isValid() const {
          return m_uid && !m_name.empty() && m_type;
      }
+     /** @brief Comparison for equalness.
+      *
+      * Returns @c true if the two Member objects being compared can be
+      * considered to be "equal" C/C++ members. They are considered to be
+      * equal if their data type, member name, their offset within their parent
+      * containing C/C++ data structure, as well as their original native C/C++
+      * instance were exactly identical.
+      */
      bool Member::operator==(const Member& other) const {
          return m_uid    == other.m_uid &&
                 m_offset == other.m_offset &&
-Line 159 
 namespace Serialization {
+Line 613 
 namespace Serialization {
                 m_type   == other.m_type;
      }
+     /** @brief Comparison for inequalness.
+      *
+      * Returns the inverse result of what Member::operator==() would return.
+      * So refer to the latter for more details.
+      */
      bool Member::operator!=(const Member& other) const {
          return !operator==(other);
      }
+     /** @brief Smaller than comparison.
+      *
+      * Returns @c true if this Member object can be consider to be "smaller"
+      * than the @a other Member object being compared with. This operator
+      * is actually quite arbitrarily implemented and may change at any time,
+      * and thus result for the same member representations may change in
+      * future at any time.
+      *
+      * This operator is basically implemented for allowing this DataType class
+      * to be used with various standard template library (STL) classes, which
+      * require sorting operators to be implemented.
+      */
      bool Member::operator<(const Member& other) const {
          return m_uid  < other.m_uid ||
                (m_uid == other.m_uid &&
-                m_offset  < other.m_offset ||
+               (m_offset  < other.m_offset ||
                (m_offset == other.m_offset &&
-                m_name  < other.m_name ||
+               (m_name  < other.m_name ||
                (m_name == other.m_name &&
-                m_type < other.m_type)));
+                m_type < other.m_type)))));
      }
+     /** @brief Greater than comparison.
+      *
+      * Returns @c true if this Member object can be consider to be "greater"
+      * than the @a other Member object being compared with. This operator
+      * is actually quite arbitrarily implemented and may change at any time,
+      * and thus result for the same member representations may change in
+      * future at any time.
+      *
+      * This operator is basically implemented for allowing this DataType class
+      * to be used with various standard template library (STL) classes, which
+      * require sorting operators to be implemented.
+      */
      bool Member::operator>(const Member& other) const {
          return !(operator==(other) || operator<(other));
      }
-Line 180 
 namespace Serialization {
+Line 663 
 namespace Serialization {
      // *************** Object ***************
      // *
+     /** @brief Default constructor (for an "invalid" Object).
+      *
+      * Initializes an Object instance as being an "invalid" Object.
+      * Thus calling isValid(), after creating an Object instance with this
+      * constructor, would return @c false.
+      *
+      * Usually you are not supposed to create (meaningful) Object instances on
+      * your own. They are typically constructed by the Archive class for you.
+      *
+      * @see Archive::rootObject(), Archive::objectByUID()
+      */
      Object::Object() {
          m_version = 0;
          m_minVersion = 0;
      }
+     /** @brief Constructor for a "meaningful" Object.
+      *
+      * Initializes a "meaningful" Object instance as being. Thus calling
+      * isValid(), after creating an Object instance with this constructor,
+      * should return @c true, provided that the arguments passed to this
+      * constructor construe a valid object representation.
+      *
+      * Usually you are not supposed to create (meaningful) Object instances on
+      * your own. They are typically constructed by the Archive class for you.
+      *
+      * @see Archive::rootObject(), Archive::objectByUID()
+      *
+      * @param uidChain - unique identifier chain of the object to be constructed
+      * @param type - C/C++ data type of the actual native object this abstract
+      *               Object instance should reflect after calling this
+      *               constructor
+      */
      Object::Object(UIDChain uidChain, DataType type) {
          m_type = type;
          m_uid  = uidChain;
-Line 193 
 namespace Serialization {
+Line 704 
 namespace Serialization {
          //m_data.resize(type.size());
      }
+     /** @brief Check if this is a valid Object instance.
+      *
+      * Returns @c true if this Object instance is reflecting a "valid" Object.
+      * The default constructor creates Object instances initialized to be
+      * "invalid" Objects by default. That way one can detect whether an Object
+      * instance was ever assigned to something meaningful.
+      *
+      * Note that this class also implements the @c bool operator, both return
+      * the same boolean result value.
+      */
      bool Object::isValid() const {
          return m_type && !m_uid.empty();
      }
+     /** @brief Unique identifier of this Object.
+      *
+      * Returns the unique identifier for the original native C/C++ data this
+      * abstract Object instance is reflecting. If this Object is representing
+      * a C/C++ pointer (of first degree) then @c uid() (or @c uid(0) ) returns
+      * the unique identifier of the pointer itself, whereas @c uid(1) returns
+      * the unique identifier of the original C/C++ data that pointer was
+      * actually pointing to.
+      *
+      * @see UIDChain for more details about this overall topic.
+      */
+     UID Object::uid(int index) const {
+         return (index < m_uid.size()) ? m_uid[index] : NO_UID;
+     }
+     /** @brief Unique identifier chain of this Object.
+      *
+      * Returns the entire unique identifier chain of this Object.
+      *
+      * @see uid() and UIDChain for more details about this overall topic.
+      */
+     const UIDChain& Object::uidChain() const {
+         return m_uid;
+     }
+     /** @brief C/C++ data type this Object is reflecting.
+      *
+      * Returns the precise original C/C++ data type of the original native
+      * C/C++ object or data this Object instance is reflecting.
+      */
+     const DataType& Object::type() const {
+         return m_type;
+     }
+     /** @brief Raw data of the original native C/C++ data.
+      *
+      * Returns the raw data value of the original C/C++ data this Object is
+      * reflecting. So the precise raw data value, layout and size is dependent
+      * to the precise C/C++ data type of the original native C/C++ data. However
+      * potentially required endian correction is already automatically applied
+      * for you. That means you can safely, directly C-cast the raw data returned
+      * by this method to the respective native C/C++ data type in order to
+      * access and use the value for some purpose, at least if the respective
+      * data is of any fundamental, primitive C/C++ data type, or also to a
+      * certain extent if the type is user defined @c enum type.
+      *
+      * However directly C-casting this raw data for user defined @c struct or
+      * @c class types is not possible. For those user defined data structures
+      * this method always returns empty raw data instead.
+      *
+      * Note however that there are more convenient methods in the Archive class
+      * to get the right value for the individual data types instead.
+      *
+      * @see Archive::valueAsInt(), Archive::valueAsReal(), Archive::valueAsBool(),
+      *      Archive::valueAsString()
+      */
+     const RawData& Object::rawData() const {
+         return m_data;
+     }
+     /** @brief Version of original user defined C/C++ @c struct or @c class.
+      *
+      * In case this Object is reflecting a native C/C++ @c struct or @c class
+      * type, then this method returns the version of that native C/C++ @c struct
+      * or @c class layout or implementation. For primitive, fundamental C/C++
+      * data types (including @c String objects) the return value of this method
+      * has no meaning.
+      *
+      * @see Archive::setVersion() for more details about this overall topic.
+      */
+     Version Object::version() const {
+         return m_version;
+     }
+     /** @brief Minimum version of original user defined C/C++ @c struct or @c class.
+      *
+      * In case this Object is reflecting a native C/C++ @c struct or @c class
+      * type, then this method returns the "minimum" version of that native C/C++
+      * @c struct or @c class layout or implementation which it may be compatible
+      * with. For primitive, fundamental C/C++ data types (including @c String
+      * objects) the return value of this method has no meaning.
+      *
+      * @see Archive::setVersion() and Archive::setMinVersion() for more details
+      *      about this overall topic.
+      */
+     Version Object::minVersion() const {
+         return m_minVersion;
+     }
+     /** @brief All members of the original native C/C++ @c struct or @c class instance.
+      *
+      * In case this Object is reflecting a native C/C++ @c struct or @c class
+      * type, then this method returns all member variables of that original
+      * native C/C++ @c struct or @c class instance. For primitive, fundamental
+      * C/C++ data types this method returns an empty vector instead.
+      *
+      * Example:
+      * @code
+      * struct Foo {
+      *     int  a;
+      *     bool b;
+      *     double someValue;
+      * };
+      * @endcode
+      * Considering above's C++ code, a serialized Object representation of such
+      * a native @c Foo class would have 3 members @c a, @c b and @c someValue.
+      *
+      * Note that the respective serialize() method implementation of that
+      * fictional C++ @c struct @c Foo actually defines which members are going
+      * to be serialized and deserialized for instances of class @c Foo. So in
+      * practice the members returned by method members() here might return a
+      * different set of members as actually defined in the original C/C++ struct
+      * header declaration.
+      *
+      * The precise sequence of the members returned by this method here depends
+      * on the actual serialize() implementation of the user defined C/C++
+      * @c struct or @c class.
+      *
+      * @see Object::sequenceIndexOf() for more details about the precise order
+      *      of members returned by this method in the same way.
+      */
+     std::vector<Member>& Object::members() {
+         return m_members;
+     }
+     /** @brief All members of the original native C/C++ @c struct or @c class instance (read only).
+      *
+      * Returns the same result as overridden members() method above, it just
+      * returns a read-only result instead. See above's method description for
+      * details for the return value of this method instead.
+      */
+     const std::vector<Member>& Object::members() const {
+         return m_members;
+     }
+     /** @brief Comparison for equalness.
+      *
+      * Returns @c true if the two Object instances being compared can be
+      * considered to be "equal" native C/C++ object instances. They are
+      * considered to be equal if they are representing the same original
+      * C/C++ data instance, which is essentially the case if the original
+      * reflecting native C/C++ data are sharing the same memory address and
+      * memory size (thus the exact same memory space) and originally had the
+      * exact same native C/C++ types.
+      */
      bool Object::operator==(const Object& other) const {
          // ignoring all other member variables here
          // (since UID stands for "unique" ;-) )
-Line 204 
 namespace Serialization {
+Line 870 
 namespace Serialization {
                 m_type == other.m_type;
      }
+     /** @brief Comparison for inequalness.
+      *
+      * Returns the inverse result of what Object::operator==() would return.
+      * So refer to the latter for more details.
+      */
      bool Object::operator!=(const Object& other) const {
          return !operator==(other);
      }
+     /** @brief Smaller than comparison.
+      *
+      * Returns @c true if this Object instance can be consider to be "smaller"
+      * than the @a other Object instance being compared with. This operator
+      * is actually quite arbitrarily implemented and may change at any time,
+      * and thus result for the same Object representations may change in future
+      * at any time.
+      *
+      * This operator is basically implemented for allowing this DataType class
+      * to be used with various standard template library (STL) classes, which
+      * require sorting operators to be implemented.
+      */
      bool Object::operator<(const Object& other) const {
          // ignoring all other member variables here
          // (since UID stands for "unique" ;-) )
-Line 216 
 namespace Serialization {
+Line 899 
 namespace Serialization {
                 m_type < other.m_type);
      }
+     /** @brief Greater than comparison.
+      *
+      * Returns @c true if this Object instance can be consider to be "greater"
+      * than the @a other Object instance being compared with. This operator
+      * is actually quite arbitrarily implemented and may change at any time,
+      * and thus result for the same Object representations may change in future
+      * at any time.
+      *
+      * This operator is basically implemented for allowing this DataType class
+      * to be used with various standard template library (STL) classes, which
+      * require sorting operators to be implemented.
+      */
      bool Object::operator>(const Object& other) const {
          return !(operator==(other) || operator<(other));
      }
+     /** @brief Check version compatibility between Object instances.
+      *
+      * Use this method to check whether the two original C/C++ instances those
+      * two Objects are reflecting, were using a C/C++ data type which are version
+      * compatible with each other. By default all C/C++ Objects are considered
+      * to be version compatible. They might only be version incompatible if you
+      * enforced a certain backward compatibility constraint with your
+      * serialize() method implementation of your custom C/C++ @c struct or
+      * @c class types.
+      *
+      * You must only call this method on two Object instances which are
+      * representing the same data type, for example if both Objects reflect
+      * instances of the same user defined C++ class. Calling this method on
+      * completely different data types does not cause an error or exception, but
+      * its result would simply be useless for any purpose.
+      *
+      * @see Archive::setVersion() for more details about this overall topic.
+      */
      bool Object::isVersionCompatibleTo(const Object& other) const {
          if (this->version() == other.version())
              return true;
-Line 229 
 namespace Serialization {
+Line 942 
 namespace Serialization {
              return other.minVersion() <= this->version();
      }
+     void Object::setVersion(Version v) {
+         m_version = v;
+     }
+     void Object::setMinVersion(Version v) {
+         m_minVersion = v;
+     }
+     /** @brief Get the member of this Object with given name.
+      *
+      * In case this Object is reflecting a native C/C++ @c struct or @c class
+      * type, then this method returns the abstract reflection of the requested
+      * member variable of the original native C/C++ @c struct or @c class
+      * instance. For primitive, fundamental C/C++ data types this method always
+      * returns an "invalid" Member instance instead.
+      *
+      * Example:
+      * @code
+      * struct Foo {
+      *     int  a;
+      *     bool b;
+      *     double someValue;
+      * };
+      * @endcode
+      * Consider that you serialized the native C/C++ @c struct as shown in this
+      * example, and assuming that you implemented the respective serialize()
+      * method of this C++ @c struct to serialize all its members, then you might
+      * call memberNamed("someValue") to get the details of the third member in
+      * this example for instance. In case the passed @a name is an unknown
+      * member name, then this method will return an "invalid" Member object
+      * instead.
+      *
+      * @param name - original name of the sought serialized member variable of
+      *               this Object reflection
+      * @returns abstract reflection of the sought member variable
+      * @see Member::isValid(), Object::members()
+      */
      Member Object::memberNamed(String name) const {
          for (int i = 0; i < m_members.size(); ++i)
              if (m_members[i].name() == name)
-Line 236 
 namespace Serialization {
+Line 986 
 namespace Serialization {
          return Member();
      }
+     /** @brief Get the member of this Object with given unique identifier.
+      *
+      * This method behaves similar like method memberNamed() described above,
+      * but instead of searching for a member variable by name, it searches for
+      * a member with an abstract unique identifier instead. For primitive,
+      * fundamental C/C++ data types, for invalid or unknown unique identifiers,
+      * and for members which are actually not member instances of the original
+      * C/C++ @c struct or @c class instance this Object is reflecting, this
+      * method returns an "invalid" Member instance instead.
+      *
+      * @param uid - unique identifier of the member variable being sought
+      * @returns abstract reflection of the sought member variable
+      * @see Member::isValid(), Object::members(), Object::memberNamed()
+      */
+     Member Object::memberByUID(const UID& uid) const {
+         if (!uid) return Member();
+         for (int i = 0; i < m_members.size(); ++i)
+             if (m_members[i].uid() == uid)
+                 return m_members[i];
+         return Member();
+     }
      void Object::remove(const Member& member) {
          for (int i = 0; i < m_members.size(); ++i) {
              if (m_members[i] == member) {
-Line 245 
 namespace Serialization {
+Line 1017 
 namespace Serialization {
          }
      }
+     /** @brief Get all members of this Object with given data type.
+      *
+      * In case this Object is reflecting a native C/C++ @c struct or @c class
+      * type, then this method returns all member variables of that original
+      * native C/C++ @c struct or @c class instance which are matching the given
+      * requested data @a type. If this Object is reflecting a primitive,
+      * fundamental data type, or if there are no members of this Object with the
+      * requested precise C/C++ data type, then this method returns an empty
+      * vector instead.
+      *
+      * @param type - the precise C/C++ data type of the sought member variables
+      *               of this Object
+      * @returns vector with abstract reflections of the sought member variables
+      * @see Object::members(), Object::memberNamed()
+      */
      std::vector<Member> Object::membersOfType(const DataType& type) const {
          std::vector<Member> v;
          for (int i = 0; i < m_members.size(); ++i) {
-Line 255 
 namespace Serialization {
+Line 1042 
 namespace Serialization {
          return v;
      }
+     /** @brief Serialization/deserialization sequence number of the requested member.
+      *
+      * Returns the precise serialization/deserialization sequence number of the
+      * requested @a member variable.
+      *
+      * Example:
+      * @code
+      * struct Foo {
+      *     int  a;
+      *     bool b;
+      *     double c;
+      *
+      *     void serialize(Serialization::Archive* archive);
+      * };
+      * @endcode
+      * Assuming the declaration of the user defined native C/C++ @c struct
+      * @c Foo above, and assuming the following implementation of serialize():
+      * @code
+      * #define SRLZ(member) \
+      *   archive->serializeMember(*this, member, #member);
+      *
+      * void Foo::serialize(Serialization::Archive* archive) {
+      *     SRLZ(c);
+      *     SRLZ(a);
+      *     SRLZ(b);
+      * }
+      * @endcode
+      * then @c sequenceIndexOf(obj.memberNamed("a")) returns 1,
+      * @c sequenceIndexOf(obj.memberNamed("b")) returns 2, and
+      * @c sequenceIndexOf(obj.memberNamed("c")) returns 0.
+      */
      int Object::sequenceIndexOf(const Member& member) const {
          for (int i = 0; i < m_members.size(); ++i)
              if (m_members[i] == member)
-Line 265 
 namespace Serialization {
+Line 1083 
 namespace Serialization {
      // *************** Archive ***************
      // *
+     /** @brief Create an "empty" archive.
+      *
+      * This default constructor creates an "empty" archive which you then
+      * subsequently for example might fill with serialized data like:
+      * @code
+      * Archive a;
+      * a.serialize(&myRootObject);
+      * @endcode
+      * Or:
+      * @code
+      * Archive a;
+      * a << myRootObject;
+      * @endcode
+      * Or you might also subsequently assign an already existing non-empty
+      * to this empty archive, which effectively clones the other
+      * archive (deep copy) or call decode() later on to assign a previously
+      * serialized raw data stream.
+      */
      Archive::Archive() {
          m_operation = OPERATION_NONE;
          m_root = NO_UID;
          m_isModified = false;
+         m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME;
      }
+     /** @brief Create and fill the archive with the given serialized raw data.
+      *
+      * This constructor decodes the given raw @a data and constructs a
+      * (non-empty) Archive object according to that given serialized data
+      * stream.
+      *
+      * After this constructor returned, you may then traverse the individual
+      * objects by starting with accessing the rootObject() for example. Finally
+      * you might call deserialize() to restore your native C++ objects with the
+      * content of this archive.
+      *
+      * @param data - the previously serialized raw data stream to be decoded
+      * @throws Exception if the provided raw @a data uses an invalid, unknown,
+      *         incompatible or corrupt data stream or format.
+      */
      Archive::Archive(const RawData& data) {
          m_operation = OPERATION_NONE;
          m_root = NO_UID;
          m_isModified = false;
-         decode(m_rawData);
+         m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME;
+         decode(data);
      }
+     /** @brief Create and fill the archive with the given serialized raw C-buffer data.
+      *
+      * This constructor essentially works like the constructor above, but just
+      * uses another data type for the serialized raw data stream being passed to
+      * this class.
+      *
+      * This constructor decodes the given raw @a data and constructs a
+      * (non-empty) Archive object according to that given serialized data
+      * stream.
+      *
+      * After this constructor returned, you may then traverse the individual
+      * objects by starting with accessing the rootObject() for example. Finally
+      * you might call deserialize() to restore your native C++ objects with the
+      * content of this archive.
+      *
+      * @param data - the previously serialized raw data stream to be decoded
+      * @param size - size of @a data in bytes
+      * @throws Exception if the provided raw @a data uses an invalid, unknown,
+      *         incompatible or corrupt data stream or format.
+      */
      Archive::Archive(const uint8_t* data, size_t size) {
          m_operation = OPERATION_NONE;
          m_root = NO_UID;
          m_isModified = false;
+         m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME;
          decode(data, size);
      }
      Archive::~Archive() {
      }
+     /** @brief Root C++ object of this archive.
+      *
+      * In case this is a non-empty Archive, then this method returns the so
+      * called "root" C++ object. If this is an empty archive, then this method
+      * returns an "invalid" Object instance instead.
+      *
+      * @see Archive::serialize() for more details about the "root" object concept.
+      * @see Object for more details about the overall object reflection concept.
+      * @returns reflection of the original native C++ root object
+      */
      Object& Archive::rootObject() {
          return m_allObjects[m_root];
      }
-Line 303 
 namespace Serialization {
+Line 1187 
 namespace Serialization {
          return _encodeBlob(s);
      }
+     static String _encode(const time_t& time) {
+         return _encodeBlob(ToString(time));
+     }
      static String _encode(const DataType& type) {
          String s;
          s += _encodeBlob(type.baseTypeName());
-Line 376 
 namespace Serialization {
+Line 1264 
 namespace Serialization {
                      assert(false /* unknown floating point type */);
              } else if (type.isBool()) {
                  s = ToString(*(bool*)ptr);
+             } else if (type.isString()) {
+                 s = obj.m_data.empty() ? *(String*)ptr : String((const char*)ptr);
              } else {
                  assert(false /* unknown primitive type */);
              }
-Line 384 
 namespace Serialization {
+Line 1274 
 namespace Serialization {
          return s;
      }
+     template<typename T>
+     inline T _stringToNumber(const String& s) {
+         assert(false /* String cast to unknown primitive number type */);
+     }
+     template<>
+     inline int64_t _stringToNumber(const String& s) {
+         return atoll(s.c_str());
+     }
+     template<>
+     inline double _stringToNumber(const String& s) {
+         return atof(s.c_str());
+     }
+     template<>
+     inline bool _stringToNumber(const String& s) {
+         return (bool) atoll(s.c_str());
+     }
+     template<typename T>
+     static T _primitiveObjectValueToNumber(const Object& obj) {
+         T value = 0;
+         const DataType& type = obj.type();
+         const ID& id = obj.uid().id;
+         void* ptr = obj.m_data.empty() ? (void*)id : (void*)&obj.m_data[0];
+         if (!obj.m_data.empty())
+             assert(type.size() == obj.m_data.size());
+         if (type.isPrimitive() && !type.isPointer()) {
+             if (type.isInteger() || type.isEnum()) {
+                 if (type.isSigned()) {
+                     if (type.size() == 1)
+                         value = (T)*(int8_t*)ptr;
+                     else if (type.size() == 2)
+                         value = (T)*(int16_t*)ptr;
+                     else if (type.size() == 4)
+                         value = (T)*(int32_t*)ptr;
+                     else if (type.size() == 8)
+                         value = (T)*(int64_t*)ptr;
+                     else
+                         assert(false /* unknown signed int type size */);
+                 } else {
+                     if (type.size() == 1)
+                         value = (T)*(uint8_t*)ptr;
+                     else if (type.size() == 2)
+                         value = (T)*(uint16_t*)ptr;
+                     else if (type.size() == 4)
+                         value = (T)*(uint32_t*)ptr;
+                     else if (type.size() == 8)
+                         value = (T)*(uint64_t*)ptr;
+                     else
+                         assert(false /* unknown unsigned int type size */);
+                 }
+             } else if (type.isReal()) {
+                 if (type.size() == sizeof(float))
+                     value = (T)*(float*)ptr;
+                 else if (type.size() == sizeof(double))
+                     value = (T)*(double*)ptr;
+                 else
+                     assert(false /* unknown floating point type */);
+             } else if (type.isBool()) {
+                 value = (T)*(bool*)ptr;
+             } else if (type.isString()) {
+                 value = _stringToNumber<T>(
+                     obj.m_data.empty() ? *(String*)ptr : String((const char*)ptr)
+                 );
+             } else {
+                 assert(false /* unknown primitive type */);
+             }
+         }
+         return value;
+     }
      static String _encodePrimitiveValue(const Object& obj) {
          return _encodeBlob( _primitiveObjectValueToString(obj) );
      }
-Line 410 
 namespace Serialization {
+Line 1373 
 namespace Serialization {
          return _encodeBlob(s);
      }
+     /*
+      * Srx format history:
+      * - 1.0: Initial version.
+      * - 1.1: Adds "String" data type.
+      */
      #define MAGIC_START "Srx1v"
-     #define ENCODING_FORMAT_MINOR_VERSION 0
+     #define ENCODING_FORMAT_MINOR_VERSION 1
      String Archive::_encodeRootBlob() {
          String s;
          s += _encodeBlob(ToString(ENCODING_FORMAT_MINOR_VERSION));
          s += _encode(m_root);
          s += _encode(m_allObjects);
+         s += _encodeBlob(m_name);
+         s += _encodeBlob(m_comment);
+         s += _encode(m_timeCreated);
+         s += _encode(m_timeModified);
          return _encodeBlob(s);
      }
      void Archive::encode() {
          m_rawData.clear();
          String s = MAGIC_START;
+         m_timeModified = time(NULL);
+         if (m_timeCreated == LIBGIG_EPOCH_TIME)
+             m_timeCreated = m_timeModified;
          s += _encodeRootBlob();
          m_rawData.resize(s.length() + 1);
          memcpy(&m_rawData[0], &s[0], s.length() + 1);
-Line 436 
 namespace Serialization {
+Line 1411 
 namespace Serialization {
      };
      static _Blob _decodeBlob(const char* p, const char* end, bool bThrow = true) {
-         if (!bThrow && p >= end)
+         if (!bThrow && p >= end) {
-             return (_Blob) { p, end };
+             const _Blob blob =  { p, end };
+             return blob;
+         }
          size_t sz = 0;
          for (; true; ++p) {
              if (p >= end)
-Line 452 
 namespace Serialization {
+Line 1429 
 namespace Serialization {
          ++p;
          if (p + sz > end)
              throw Exception("Decode Error: Premature end of blob");
-         return (_Blob) { p, p + sz };
+         const _Blob blob = { p, p + sz };
+         return blob;
      }
      template<typename T_int>
-Line 527 
 namespace Serialization {
+Line 1505 
 namespace Serialization {
          return s;
      }
-     DataType _popDataTypeBlob(const char*& p, const char* end) {
+     static void _popStringBlob(const char*& p, const char* end, RawData& rawData) {
+         String s = _popStringBlob(p, end);
+         rawData.resize(s.length() + 1);
+         strcpy((char*)&rawData[0], &s[0]);
+     }
+     static time_t _popTimeBlob(const char*& p, const char* end) {
+         const uint64_t i = _popIntBlob<uint64_t>(p, end);
+         return (time_t) i;
+     }
+     static DataType _popDataTypeBlob(const char*& p, const char* end) {
          _Blob blob = _decodeBlob(p, end);
          p   = blob.p;
          end = blob.end;
-Line 551 
 namespace Serialization {
+Line 1540 
 namespace Serialization {
          const ID id = (ID) _popIntBlob<size_t>(p, end);
          const size_t size = _popIntBlob<size_t>(p, end);
-         return (UID) { id, size };
+         const UID uid = { id, size };
+         return uid;
      }
      static UIDChain _popUIDChainBlob(const char*& p, const char* end) {
-Line 639 
 namespace Serialization {
+Line 1629 
 namespace Serialization {
                      assert(false /* unknown floating point type */);
              } else if (type.isBool()) {
                  _popIntBlob<uint8_t>(p, end, obj.m_data);
+             } else if (type.isString()) {
+                 _popStringBlob(p, end, obj.m_data);
              } else {
                  assert(false /* unknown primitive type */);
              }
-Line 703 
 namespace Serialization {
+Line 1695 
 namespace Serialization {
          _popObjectsBlob(p, end);
          if (!m_allObjects[m_root])
              throw Exception("Decode Error: Missing declared root object");
-     }
+         m_name = _popStringBlob(p, end);
+         m_comment = _popStringBlob(p, end);
+         m_timeCreated = _popTimeBlob(p, end);
+         m_timeModified = _popTimeBlob(p, end);
+     }
+     /** @brief Fill this archive with the given serialized raw data.
+      *
+      * Calling this method will decode the given raw @a data and constructs a
+      * (non-empty) Archive object according to that given serialized @a data
+      * stream.
+      *
+      * After this method returned, you may then traverse the individual
+      * objects by starting with accessing the rootObject() for example. Finally
+      * you might call deserialize() to restore your native C++ objects with the
+      * content of this archive.
+      *
+      * @param data - the previously serialized raw data stream to be decoded
+      * @throws Exception if the provided raw @a data uses an invalid, unknown,
+      *         incompatible or corrupt data stream or format.
+      */
      void Archive::decode(const RawData& data) {
          m_rawData = data;
          m_allObjects.clear();
          m_isModified = false;
+         m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME;
          const char* p   = (const char*) &data[0];
          const char* end = p + data.size();
          if (memcmp(p, MAGIC_START, std::min(strlen(MAGIC_START), data.size())))
-Line 717 
 namespace Serialization {
+Line 1730 
 namespace Serialization {
          _popRootBlob(p, end);
      }
+     /** @brief Fill this archive with the given serialized raw C-buffer data.
+      *
+      * This method essentially works like the decode() method above, but just
+      * uses another data type for the serialized raw data stream being passed to
+      * this method.
+      *
+      * Calling this method will decode the given raw @a data and constructs a
+      * (non-empty) Archive object according to that given serialized @a data
+      * stream.
+      *
+      * After this method returned, you may then traverse the individual
+      * objects by starting with accessing the rootObject() for example. Finally
+      * you might call deserialize() to restore your native C++ objects with the
+      * content of this archive.
+      *
+      * @param data - the previously serialized raw data stream to be decoded
+      * @param size - size of @a data in bytes
+      * @throws Exception if the provided raw @a data uses an invalid, unknown,
+      *         incompatible or corrupt data stream or format.
+      */
      void Archive::decode(const uint8_t* data, size_t size) {
          RawData rawData;
          rawData.resize(size);
-Line 724 
 namespace Serialization {
+Line 1757 
 namespace Serialization {
          decode(rawData);
      }
+     /** @brief Raw data stream of this archive content.
+      *
+      * Call this method to get a raw data stream for the current content of this
+      * archive, which you may use to i.e. store on disk or send vie network to
+      * another machine for deserializing there. This method only returns a
+      * meaningful content if this is a non-empty archive, that is if you either
+      * serialized with this Archive object or decoded a raw data stream to this
+      * Archive object before. If this is an empty archive instead, then this
+      * method simply returns an empty raw data stream (of size 0) instead.
+      *
+      * Note that whenever you call this method, the "modified" state of this
+      * archive will be reset to @c false.
+      *
+      * @see isModified()
+      */
      const RawData& Archive::rawData() {
          if (m_isModified) encode();
          return m_rawData;
      }
+     /** @brief Name of the encoding format used by this Archive class.
+      *
+      * This method returns the name of the encoding format used to encode
+      * serialized raw data streams.
+      */
      String Archive::rawDataFormat() const {
          return MAGIC_START;
      }
+     /** @brief Whether this archive was modified.
+      *
+      * This method returns the current "modified" state of this archive. When
+      * either decoding a previously serialized raw data stream or after
+      * serializing native C++ objects to this archive the modified state will
+      * initially be set to @c false. However whenever you are modifying the
+      * abstract data model of this archive afterwards, for example by removing
+      * objects from this archive by calling remove() or removeMember(), or by
+      * altering object values for example by calling setIntValue(), then the
+      * "modified" state of this archive will automatically be set to @c true.
+      *
+      * You can reset the "modified" state explicitly at any time, by calling
+      * rawData().
+      */
      bool Archive::isModified() const {
          return m_isModified;
      }
+     /** @brief Clear content of this archive.
+      *
+      * Drops the entire content of this archive and thus resets this archive
+      * back to become an empty archive.
+      */
      void Archive::clear() {
          m_allObjects.clear();
          m_operation = OPERATION_NONE;
          m_root = NO_UID;
          m_rawData.clear();
          m_isModified = false;
+         m_timeCreated = m_timeModified = LIBGIG_EPOCH_TIME;
+     }
+     /** @brief Optional name of this archive.
+      *
+      * Returns the optional name of this archive that you might have assigned
+      * to this archive before by calling setName(). If you haven't assigned any
+      * name to this archive before, then this method simply returns an empty
+      * string instead.
+      */
+     String Archive::name() const {
+         return m_name;
+     }
+     /** @brief Assign a name to this archive.
+      *
+      * You may optionally assign an arbitrary name to this archive. The name
+      * will be stored along with the archive, that is it will encoded with the
+      * resulting raw data stream, and accordingly it will be decoded from the
+      * raw data stream later on.
+      *
+      * @param name - arbitrary new name for this archive
+      */
+     void Archive::setName(String name) {
+         if (m_name == name) return;
+         m_name = name;
+         m_isModified = true;
+     }
+     /** @brief Optional comments for this archive.
+      *
+      * Returns the optional comments for this archive that you might have
+      * assigned to this archive before by calling setComment(). If you haven't
+      * assigned any comment to this archive before, then this method simply
+      * returns an empty string instead.
+      */
+     String Archive::comment() const {
+         return m_comment;
+     }
+     /** @brief Assign a comment to this archive.
+      *
+      * You may optionally assign arbitrary comments to this archive. The comment
+      * will be stored along with the archive, that is it will encoded with the
+      * resulting raw data stream, and accordingly it will be decoded from the
+      * raw data stream later on.
+      *
+      * @param comment - arbitrary new comment for this archive
+      */
+     void Archive::setComment(String comment) {
+         if (m_comment == comment) return;
+         m_comment = comment;
+         m_isModified = true;
      }
+     static tm _convertTimeStamp(const time_t& time, time_base_t base) {
+         tm* pTm;
+         switch (base) {
+             case LOCAL_TIME:
+                 pTm = localtime(&time);
+                 break;
+             case UTC_TIME:
+                 pTm = gmtime(&time);
+                 break;
+             default:
+                 throw Exception("Time stamp with unknown time base (" + ToString((int64_t)base) + ") requested");
+         }
+         if (!pTm)
+             throw Exception("Failed assembling time stamp structure");
+         return *pTm;
+     }
+     /** @brief Date and time when this archive was initially created.
+      *
+      * Returns a UTC time stamp (date and time) when this archive was initially
+      * created.
+      */
+     time_t Archive::timeStampCreated() const {
+         return m_timeCreated;
+     }
+     /** @brief Date and time when this archive was modified for the last time.
+      *
+      * Returns a UTC time stamp (date and time) when this archive was modified
+      * for the last time.
+      */
+     time_t Archive::timeStampModified() const {
+         return m_timeModified;
+     }
+     /** @brief Date and time when this archive was initially created.
+      *
+      * Returns a calendar time information representing the date and time when
+      * this archive was initially created. The optional @a base parameter may
+      * be used to define to which time zone the returned data and time shall be
+      * related to.
+      *
+      * @param base - (optional) time zone the result shall relate to, by default
+      *               UTC time (Greenwhich Mean Time) is assumed instead
+      */
+     tm Archive::dateTimeCreated(time_base_t base) const {
+         return _convertTimeStamp(m_timeCreated, base);
+     }
+     /** @brief Date and time when this archive was modified for the last time.
+      *
+      * Returns a calendar time information representing the date and time when
+      * this archive has been modified for the last time. The optional @a base
+      * parameter may be used to define to which time zone the returned date and
+      * time shall be related to.
+      *
+      * @param base - (optional) time zone the result shall relate to, by default
+      *               UTC time (Greenwhich Mean Time) is assumed instead
+      */
+     tm Archive::dateTimeModified(time_base_t base) const {
+         return _convertTimeStamp(m_timeModified, base);
+     }
+     /** @brief Remove a member variable from the given object.
+      *
+      * Removes the member variable @a member from its containing object
+      * @a parent and sets the modified state of this archive to @c true.
+      * If the given @a parent object does not contain the given @a member then
+      * this method does nothing.
+      *
+      * This method provides a means of "partial" deserialization. By removing
+      * either objects or members from this archive before calling deserialize(),
+      * only the remaining objects and remaining members will be restored by this
+      * framework, all other data of your C++ classes remain untouched.
+      *
+      * @param parent - Object which contains @a member
+      * @param member - member to be removed
+      * @see isModified() for details about the modified state.
+      * @see Object for more details about the overall object reflection concept.
+      */
+     void Archive::removeMember(Object& parent, const Member& member) {
+         parent.remove(member);
+         m_isModified = true;
+     }
+     /** @brief Remove an object from this archive.
+      *
+      * Removes the object @obj from this archive and sets the modified state of
+      * this archive to @c true. If the passed object is either invalid, or does
+      * not exist in this archive, then this method does nothing.
+      *
+      * This method provides a means of "partial" deserialization. By removing
+      * either objects or members from this archive before calling deserialize(),
+      * only the remaining objects and remaining members will be restored by this
+      * framework, all other data of your C++ classes remain untouched.
+      *
+      * @param obj - the object to be removed from this archive
+      * @see isModified() for details about the modified state.
+      * @see Object for more details about the overall object reflection concept.
+      */
      void Archive::remove(const Object& obj) {
+         //FIXME: Should traverse from root object and remove all members associated with this object
          if (!obj.uid()) return;
          m_allObjects.erase(obj.uid());
          m_isModified = true;
      }
+     /** @brief Access object by its unique identifier.
+      *
+      * Returns the object of this archive with the given unique identifier
+      * @a uid. If the given @a uid is invalid, or if this archive does not
+      * contain an object with the given unique identifier, then this method
+      * returns an invalid object instead.
+      *
+      * @param uid - unique identifier of sought object
+      * @see Object for more details about the overall object reflection concept.
+      * @see Object::isValid() for valid/invalid objects
+      */
      Object& Archive::objectByUID(const UID& uid) {
          return m_allObjects[uid];
      }
+     /** @brief Set the current version for the given object.
+      *
+      * Essentially behaves like above's setVersion() method, it just uses the
+      * abstract reflection data type instead for the respective @a object being
+      * passed to this method. Refer to above's setVersion() documentation about
+      * the precise behavior details of setVersion().
+      *
+      * @param object - object to set the current version for
+      * @param v - new current version to set for @a object
+      */
+     void Archive::setVersion(Object& object, Version v) {
+         if (!object) return;
+         object.setVersion(v);
+         m_isModified = true;
+     }
+     /** @brief Set the minimum version for the given object.
+      *
+      * Essentially behaves like above's setMinVersion() method, it just uses the
+      * abstract reflection data type instead for the respective @a object being
+      * passed to this method. Refer to above's setMinVersion() documentation
+      * about the precise behavior details of setMinVersion().
+      *
+      * @param object - object to set the minimum version for
+      * @param v - new minimum version to set for @a object
+      */
+     void Archive::setMinVersion(Object& object, Version v) {
+         if (!object) return;
+         object.setMinVersion(v);
+         m_isModified = true;
+     }
+     /** @brief Set new value for given @c enum object.
+      *
+      * Sets the new @a value to the given @c enum @a object.
+      *
+      * @param object - the @c enum object to be changed
+      * @param value - the new value to be assigned to the @a object
+      * @throws Exception if @a object is not an @c enum type.
+      */
      void Archive::setEnumValue(Object& object, uint64_t value) {
          if (!object) return;
          if (!object.type().isEnum())
-Line 787 
 namespace Serialization {
+Line 2064 
 namespace Serialization {
          m_isModified = true;
      }
+     /** @brief Set new integer value for given integer object.
+      *
+      * Sets the new integer @a value to the given integer @a object. Currently
+      * this framework handles any integer data type up to 64 bit. For larger
+      * integer types an assertion failure will be raised.
+      *
+      * @param object - the integer object to be changed
+      * @param value - the new value to be assigned to the @a object
+      * @throws Exception if @a object is not an integer type.
+      */
      void Archive::setIntValue(Object& object, int64_t value) {
          if (!object) return;
          if (!object.type().isInteger())
-Line 826 
 namespace Serialization {
+Line 2113 
 namespace Serialization {
          m_isModified = true;
      }
+     /** @brief Set new floating point value for given floating point object.
+      *
+      * Sets the new floating point @a value to the given floating point
+      * @a object. Currently this framework supports single precision @c float
+      * and double precision @c double floating point data types. For all other
+      * floating point types this method will raise an assertion failure.
+      *
+      * @param object - the floating point object to be changed
+      * @param value - the new value to be assigned to the @a object
+      * @throws Exception if @a object is not a floating point based type.
+      */
      void Archive::setRealValue(Object& object, double value) {
          if (!object) return;
          if (!object.type().isReal())
-Line 848 
 namespace Serialization {
+Line 2146 
 namespace Serialization {
          m_isModified = true;
      }
+     /** @brief Set new boolean value for given boolean object.
+      *
+      * Sets the new boolean @a value to the given boolean @a object.
+      *
+      * @param object - the boolean object to be changed
+      * @param value - the new value to be assigned to the @a object
+      * @throws Exception if @a object is not a boolean type.
+      */
      void Archive::setBoolValue(Object& object, bool value) {
          if (!object) return;
          if (!object.type().isBool())
-Line 865 
 namespace Serialization {
+Line 2171 
 namespace Serialization {
          m_isModified = true;
      }
+     /** @brief Set new textual string for given String object.
+      *
+      * Sets the new textual string @a value to the given String @a object.
+      *
+      * @param object - the String object to be changed
+      * @param value - the new textual string to be assigned to the @a object
+      * @throws Exception if @a object is not a String type.
+      */
+     void Archive::setStringValue(Object& object, String value) {
+         if (!object) return;
+         if (!object.type().isString())
+             throw Exception("Not a String data type");
+         Object* pObject = &object;
+         if (object.type().isPointer()) {
+             Object& obj = objectByUID(object.uid(1));
+             if (!obj) return;
+             pObject = &obj;
+         }
+         pObject->m_data.resize(value.length() + 1);
+         char* ptr = (char*) &pObject->m_data[0];
+         strcpy(ptr, &value[0]);
+         m_isModified = true;
+     }
+     /** @brief Automatically cast and assign appropriate value to object.
+      *
+      * This method automatically converts the given @a value from textual string
+      * representation into the appropriate data format of the requested
+      * @a object. So this method is a convenient way to change values of objects
+      * in this archive with your applications in automated way, i.e. for
+      * implementing an editor where the user is able to edit values of objects
+      * in this archive by entering the values as text with a keyboard.
+      *
+      * @throws Exception if the passed @a object is not a fundamental, primitive
+      *         data type or if the provided textual value cannot be converted
+      *         into an appropriate value for the requested object.
+      */
      void Archive::setAutoValue(Object& object, String value) {
          if (!object) return;
          const DataType& type = object.type();
-Line 872 
 namespace Serialization {
+Line 2215 
 namespace Serialization {
              setIntValue(object, atoll(value.c_str()));
          else if (type.isReal())
              setRealValue(object, atof(value.c_str()));
-         else if (type.isBool())
+         else if (type.isBool()) {
-             setBoolValue(object, atof(value.c_str()));
+             String val = toLowerCase(value);
+             if (val == "true" || val == "yes" || val == "1")
+                 setBoolValue(object, true);
+             else if (val == "false" || val == "no" || val == "0")
+                 setBoolValue(object, false);
+             else
+                 setBoolValue(object, atof(value.c_str()));
+         } else if (type.isString())
+             setStringValue(object, value);
          else if (type.isEnum())
              setEnumValue(object, atoll(value.c_str()));
          else
              throw Exception("Not a primitive data type");
      }
+     /** @brief Get value of object as string.
+      *
+      * Converts the current value of the given @a object into a textual string
+      * and returns that string.
+      *
+      * @param object - object whose value shall be retrieved
+      * @throws Exception if the given object is either invalid, or if the object
+      *         is not a fundamental, primitive data type.
+      */
      String Archive::valueAsString(const Object& object) {
          if (!object)
              throw Exception("Invalid object");
-Line 894 
 namespace Serialization {
+Line 2254 
 namespace Serialization {
          return _primitiveObjectValueToString(*pObject);
      }
+     /** @brief Get integer value of object.
+      *
+      * Returns the current integer value of the requested integer @a object or
+      * @c enum object.
+      *
+      * @param object - object whose value shall be retrieved
+      * @throws Exception if the given object is either invalid, or if the object
+      *         is neither an integer nor @c enum data type.
+      */
+     int64_t Archive::valueAsInt(const Object& object) {
+         if (!object)
+             throw Exception("Invalid object");
+         if (!object.type().isInteger() && !object.type().isEnum())
+             throw Exception("Object is neither an integer nor an enum");
+         const Object* pObject = &object;
+         if (object.type().isPointer()) {
+             const Object& obj = objectByUID(object.uid(1));
+             if (!obj) return 0;
+             pObject = &obj;
+         }
+         return _primitiveObjectValueToNumber<int64_t>(*pObject);
+     }
+     /** @brief Get floating point value of object.
+      *
+      * Returns the current floating point value of the requested floating point
+      * @a object.
+      *
+      * @param object - object whose value shall be retrieved
+      * @throws Exception if the given object is either invalid, or if the object
+      *         is not a floating point based type.
+      */
+     double Archive::valueAsReal(const Object& object) {
+         if (!object)
+             throw Exception("Invalid object");
+         if (!object.type().isReal())
+             throw Exception("Object is not an real type");
+         const Object* pObject = &object;
+         if (object.type().isPointer()) {
+             const Object& obj = objectByUID(object.uid(1));
+             if (!obj) return 0;
+             pObject = &obj;
+         }
+         return _primitiveObjectValueToNumber<double>(*pObject);
+     }
+     /** @brief Get boolean value of object.
+      *
+      * Returns the current boolean value of the requested boolean @a object.
+      *
+      * @param object - object whose value shall be retrieved
+      * @throws Exception if the given object is either invalid, or if the object
+      *         is not a boolean data type.
+      */
+     bool Archive::valueAsBool(const Object& object) {
+         if (!object)
+             throw Exception("Invalid object");
+         if (!object.type().isBool())
+             throw Exception("Object is not a bool");
+         const Object* pObject = &object;
+         if (object.type().isPointer()) {
+             const Object& obj = objectByUID(object.uid(1));
+             if (!obj) return 0;
+             pObject = &obj;
+         }
+         return _primitiveObjectValueToNumber<bool>(*pObject);
+     }
+     Archive::operation_t Archive::operation() const {
+         return m_operation;
+     }
      // *************** Archive::Syncer ***************
      // *
-Line 915 
 namespace Serialization {
+Line 2347 
 namespace Serialization {
          memcpy(pDst, &srcObj.rawData()[0], dstObj.type().size());
      }
+     void Archive::Syncer::syncString(const Object& dstObj, const Object& srcObj) {
+         assert(dstObj.type().isString());
+         assert(dstObj.type() == srcObj.type());
+         String* pDst = (String*)(void*)dstObj.uid().id;
+         *pDst = (String) (const char*) &srcObj.rawData()[0];
+     }
      void Archive::Syncer::syncPointer(const Object& dstObj, const Object& srcObj) {
          assert(dstObj.type().isPointer());
          assert(dstObj.type() == srcObj.type());
-Line 941 
 namespace Serialization {
+Line 2380 
 namespace Serialization {
          m_dst.m_allObjects.erase(dstObj.uid());
          if (dstObj.type().isPrimitive() && !dstObj.type().isPointer()) {
-             syncPrimitive(dstObj, srcObj);
+             if (dstObj.type().isString())
+                 syncString(dstObj, srcObj);
+             else
+                 syncPrimitive(dstObj, srcObj);
              return; // end of recursion
          }
-Line 993 
 namespace Serialization {
+Line 2435 
 namespace Serialization {
      // *************** Exception ***************
      // *
+     Exception::Exception() {
+     }
+     Exception::Exception(String format, ...) {
+         va_list arg;
+         va_start(arg, format);
+         Message = assemble(format, arg);
+         va_end(arg);
+     }
+     Exception::Exception(String format, va_list arg) {
+         Message = assemble(format, arg);
+     }
+     /** @brief Print exception message to stdout.
+      *
+      * Prints the message of this Exception to the currently defined standard
+      * output (that is to the terminal console for example).
+      */
      void Exception::PrintMessage() {
          std::cout << "Serialization::Exception: " << Message << std::endl;
      }
+     String Exception::assemble(String format, va_list arg) {
+         char* buf = NULL;
+         vasprintf(&buf, format.c_str(), arg);
+         String s = buf;
+         free(buf);
+         return s;
+     }
  } // namespace Serialization

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