Changeset 49:cdd4cf3eda0c in rrlib_rtti_conversion

Timestamp:

08.02.2022 07:22:43 (14 months ago)

Author:

Max Reichardt <mreichardt@…>

Branch:

17.03

Phase:

public

Tags:

tip

Message:

Allows to specify destination object pointer type passed to Convert function. Custom types may allow conversion operations to provide additional information (timestamps are an example).

Files:

• tCompiledConversionOperation.h (modified) (4 diffs)
• tConversionOperationSequence.cpp (modified) (2 diffs)
• tConversionOperationSequence.h (modified) (1 diff)

tCompiledConversionOperation.h

@@ -95 +95 @@
   };
 
-  tCompiledConversionOperation() : tConversionOperationSequence(), conversion_function_first(nullptr), conversion_function_final(nullptr), fixed_offset_first(0), fixed_offset_final(0), flags(0)
+  tCompiledConversionOperation() : tConversionOperationSequence(), conversion_function_first(nullptr), conversion_function_final(nullptr), fixed_offset_first(0), fixed_offset_final(0), flags(0), destination_pointer_type(&typeid(tTypedPointer))
   {
     memset(custom_operation_data_storage, 0, sizeof(custom_operation_data_storage));
@@ -139 +139 @@
   {
     assert(flags & tFlag::cRESULT_REFERENCES_SOURCE_DIRECTLY);
+    assert(typeid(tTypedPointer) == *destination_pointer_type && "This convert function required default destination_pointer_type");
     tTypedConstPointer result(static_cast<const char*>(source_object.GetRawDataPointer()) + fixed_offset_first, type_after_first_fixed_offset);
     if (get_destination_reference_function_first != nullptr)
@@ -155 +156 @@
 
   /*!
+   * return Type of destination_object used when calling Convert
+   */
+  const std::type_info& DestinationPointerType() const
+  {
+    return *destination_pointer_type;
+  }
+
+  /*!
    * \return Flags for conversion operation
    */
@@ -217 +226 @@
   char* custom_operation_data_storage[2 * tCustomOperationData::cMAX_SIZE];
 
+  /*! Type of destination_object used calling Convert; may be subclass of tTypedPointer; set when compiling */
+  const std::type_info* destination_pointer_type;
+
   tCustomOperationData CustomOperationData(size_t index)
   {

tConversionOperationSequence.cpp

@@ -144 +144 @@
 }
 
-tCompiledConversionOperation tConversionOperationSequence::Compile(bool allow_reference_to_source, const tType& source_type, const tType& destination_type) const
+tCompiledConversionOperation tConversionOperationSequence::Compile(bool allow_reference_to_source, const tType& source_type, const tType& destination_type, const std::type_info& destination_pointer_type) const
 {
   // ############
@@ -406 +406 @@
   result.destination_type = last_conversion->destination_type;
   static_cast<tConversionOperationSequence&>(result).intermediate_type = this->intermediate_type;
+  result.destination_pointer_type = &(first_operation == &cFOR_EACH_OPERATION ? typeid(tTypedPointer) : destination_pointer_type);  // Special For-Each operation works with standard typed pointers only
 
   // Handle special case: only const offsets

tConversionOperationSequence.h

@@ -139 +139 @@
    * \param source_type Source Type (can be omitted if first operation has fixed source type)
    * \param destination_type Destination Type (can be omitted if last operation has fixed destination type)
+   * \param destination_pointer_type Type of destination_object pointer caller provides to Convert function. Custom types allow conversion operations to provide additional information (timestamps are an example).
    * \throw Throws exception if conversion operation sequence erroneous, ambiguous, or cannot be used to convert specified types
    */
-  tCompiledConversionOperation Compile(bool allow_reference_to_source, const tType& source_type = tType(), const tType& destination_type = tType()) const;
+  tCompiledConversionOperation Compile(bool allow_reference_to_source, const tType& source_type = tType(), const tType& destination_type = tType(), const std::type_info& destination_pointer_type = typeid(tTypedPointer)) const;
 
   /*!