protected virtual MappingElement TryToCreateMappingExpression(MappingElement source, ITypeSymbol targetType, MappingPath mappingPath)
{
//TODO: If source expression is method or constructor invocation then we should extract local variable and use it im mappings as a reference
var namedTargetType = targetType as INamedTypeSymbol;
if (namedTargetType != null)
{
var directlyMappingConstructor = namedTargetType.Constructors.FirstOrDefault(c => c.Parameters.Length == 1 && c.Parameters[0].Type.Equals(source.ExpressionType));
if (directlyMappingConstructor != null)
{
var constructorParameters = SyntaxFactory.ArgumentList().AddArguments(SyntaxFactory.Argument(source.Expression));
var creationExpression = syntaxGenerator.ObjectCreationExpression(targetType, constructorParameters.Arguments);
return(new MappingElement()
{
ExpressionType = targetType,
Expression = (ExpressionSyntax)creationExpression
});
}
}
if (MappingHelper.IsMappingBetweenCollections(targetType, source.ExpressionType))
{
return(new MappingElement()
{
ExpressionType = targetType,
Expression = MapCollections(source.Expression, source.ExpressionType, targetType, mappingPath.Clone()) as ExpressionSyntax
});
}
var subMappingSourceFinder = new ObjectMembersMappingSourceFinder(source.ExpressionType, source.Expression, syntaxGenerator);
if (namedTargetType != null)
{
//maybe there is constructor that accepts parameter matching source properties
var constructorOverloadParameterSets = namedTargetType.Constructors.Select(x => x.Parameters);
var matchedOverload = MethodHelper.FindBestParametersMatch(subMappingSourceFinder, constructorOverloadParameterSets);
if (matchedOverload != null)
{
var creationExpression = ((ObjectCreationExpressionSyntax)syntaxGenerator.ObjectCreationExpression(targetType, matchedOverload.ToArgumentListSyntax(this).Arguments));
var matchedSources = matchedOverload.GetMatchedSources();
var restSourceFinder = new IgnorableMappingSourceFinder(subMappingSourceFinder, foundElement =>
{
return(matchedSources.Any(x => x.Expression.IsEquivalentTo(foundElement.Expression)));
});
var mappingMatcher = new SingleSourceMatcher(restSourceFinder);
return(new MappingElement()
{
ExpressionType = targetType,
Expression = AddInitializerWithMapping(creationExpression, mappingMatcher, targetType, mappingPath)
});
}
}
var objectCreationExpressionSyntax = ((ObjectCreationExpressionSyntax)syntaxGenerator.ObjectCreationExpression(targetType));
var subMappingMatcher = new SingleSourceMatcher(subMappingSourceFinder);
return(new MappingElement()
{
ExpressionType = targetType,
Expression = AddInitializerWithMapping(objectCreationExpressionSyntax, subMappingMatcher, targetType, mappingPath)
});
}
protected virtual async Task <MappingElement> TryToCreateMappingExpression(MappingElement source, AnnotatedType targetType, MappingPath mappingPath, MappingContext mappingContext)
{
//TODO: If source expression is method or constructor invocation then we should extract local variable and use it im mappings as a reference
var namedTargetType = targetType.Type as INamedTypeSymbol;
if (namedTargetType != null)
{
var directlyMappingConstructor = namedTargetType.Constructors.FirstOrDefault(c => c.Parameters.Length == 1 && c.Parameters[0].Type.Equals(source.ExpressionType.Type));
if (directlyMappingConstructor != null)
{
var creationExpression = CreateObject(targetType.Type, SyntaxFactory.ArgumentList().AddArguments(SyntaxFactory.Argument(source.Expression)));
var shouldProtectAgainstNull = directlyMappingConstructor.Parameters[0].Type.CanBeNull() == false && source.ExpressionType.CanBeNull;
return(new MappingElement
{
ExpressionType = targetType,
Expression = shouldProtectAgainstNull ? HandleSafeNull(source, targetType, creationExpression) : creationExpression
});
}
}
if (MappingHelper.IsMappingBetweenCollections(targetType.Type, source.ExpressionType.Type))
{
var shouldProtectAgainstNull = source.ExpressionType.CanBeNull && targetType.CanBeNull == false;
var collectionMapping = (await MapCollectionsAsync(source, targetType, mappingPath.Clone(), mappingContext).ConfigureAwait(false)) as ExpressionSyntax;
return(new MappingElement
{
ExpressionType = targetType,
Expression = shouldProtectAgainstNull ? OrFailWhenArgumentNull(collectionMapping, source.Expression.ToFullString()) : collectionMapping,
});
}
var subMappingSourceFinder = new ObjectMembersMappingSourceFinder(source.ExpressionType.AsNotNull(), source.Expression);
if (namedTargetType != null)
{
//maybe there is constructor that accepts parameter matching source properties
var constructorOverloadParameterSets = namedTargetType.Constructors.Select(x => x.Parameters);
var matchedOverload = await MethodHelper.FindBestParametersMatch(subMappingSourceFinder, constructorOverloadParameterSets, mappingContext).ConfigureAwait(false);
if (matchedOverload != null)
{
var argumentListSyntaxAsync = await matchedOverload.ToArgumentListSyntaxAsync(this, mappingContext).ConfigureAwait(false);
var creationExpression = CreateObject(targetType.Type, argumentListSyntaxAsync);
var matchedSources = matchedOverload.GetMatchedSources();
var restSourceFinder = new IgnorableMappingSourceFinder(subMappingSourceFinder, foundElement =>
{
return(matchedSources.Any(x => x.Expression.IsEquivalentTo(foundElement.Expression)));
});
var mappingMatcher = new SingleSourceMatcher(restSourceFinder);
return(new MappingElement()
{
ExpressionType = new AnnotatedType(targetType.Type),
Expression = await AddInitializerWithMappingAsync(creationExpression, mappingMatcher, targetType.Type, mappingContext, mappingPath).ConfigureAwait(false),
});
}
}
var objectCreationExpressionSyntax = CreateObject(targetType.Type);
var subMappingMatcher = new SingleSourceMatcher(subMappingSourceFinder);
var objectCreationWithInitializer = await AddInitializerWithMappingAsync(objectCreationExpressionSyntax, subMappingMatcher, targetType.Type, mappingContext, mappingPath).ConfigureAwait(false);
return(new MappingElement()
{
ExpressionType = new AnnotatedType(targetType.Type),
Expression = HandleSafeNull(source, targetType, objectCreationWithInitializer)
});
}
