private static void AddDeclaredSourceTypeMappings(
IEnumerable <DerivedTypePair> derivedTypePairs,
IObjectMappingData declaredTypeMappingData,
ICollection <DerivedTypeMapping> derivedTypeMappings,
out bool declaredTypeHasUnconditionalTypePair)
{
var declaredTypeMapperData = declaredTypeMappingData.MapperData;
foreach (var derivedTypePair in derivedTypePairs)
{
var condition = GetTypePairCondition(derivedTypePair, declaredTypeMapperData);
var derivedTypeMapping = MappingFactory.GetDerivedTypeMapping(
declaredTypeMappingData,
declaredTypeMapperData.SourceObject,
derivedTypePair.DerivedTargetType);
var returnMappingResult = Expression.Return(declaredTypeMapperData.ReturnLabelTarget, derivedTypeMapping);
declaredTypeHasUnconditionalTypePair = (condition == null);
if (declaredTypeHasUnconditionalTypePair)
{
derivedTypeMappings.Add(DerivedTypeMapping.Unconditional(derivedTypePair, returnMappingResult));
return;
}
var ifConditionThenMap = Expression.IfThen(condition, returnMappingResult);
derivedTypeMappings.Add(DerivedTypeMapping.Conditional(derivedTypePair, ifConditionThenMap));
}
declaredTypeHasUnconditionalTypePair = false;
}
private static Expression GetReturnMappingResultExpression(
IObjectMappingData mappingData,
Expression typedVariable,
Type targetType)
{
var mapping = MappingFactory.GetDerivedTypeMapping(mappingData, typedVariable, targetType);
var returnMappingResult = Expression.Return(mappingData.MapperData.ReturnLabelTarget, mapping);
return(returnMappingResult);
}