public ProposedMap CreateMapProposal(TypePair pair, MemberOptions options = null, LambdaExpression customMappingExpression = null, params Type[] parameters)
{
var map = new ProposedMap(pair.SourceType, pair.DestinationType, this.mapper, this.options);
foreach (var param in parameters)
{
map.ParameterTypes.Add(param);
}
CustomMapping customMapping = null;
customMapping = GetCustomMappingFromExpression(pair, customMappingExpression, customMapping);
TryGetCustomMapping(pair, out customMapping);
var mapping = GetComplexTypeMapping(0, pair, options ?? mapper.DefaultMemberOptions, customMapping, true);
if (mapping.CustomMapping == null)
{
mapping.CustomMapping = customMapping;
}
map.ProposedTypeMapping = mapping;
return(map);
}
public ProposedMap <TSource, TDestination, TParam> CreateMapProposal <TSource, TDestination, TParam>(MemberOptions options = null, Expression <Func <TSource, TParam, object> > customMappingExpression = null)
{
var map = new ProposedMap <TSource, TDestination, TParam>(this.mapper, this.options);
map.ParameterTypes.Add(typeof(TParam));
var pair = new TypePair(typeof(TSource), typeof(TDestination));
CustomMapping customMapping = null;
//if (customMappingExpression != null)
//{
// customMapping = CustomMapping.GetCustomMapping(typeof(TDestination), customMappingExpression);
// customMappingCache[pair] = customMapping;
//}
customMapping = GetCustomMappingFromExpression(pair, customMappingExpression, customMapping);
TryGetCustomMapping(pair, out customMapping);
var mapping = GetComplexTypeMapping(0, pair, options ?? mapper.DefaultMemberOptions, customMapping, true);
if (mapping.CustomMapping == null)
{
mapping.CustomMapping = customMapping;
}
map.ProposedTypeMapping = mapping;
return(map);
}
public CompiledMapGenerator(IMemberMapper mapper, ProposedMap map, MapperOptions options)
{
this.mapper = mapper;
this.proposedMap = map;
this.mapProcessor = new MapProposalProcessor(mapper);
this.newParameters = new List<ParameterExpression>();
this.options = options;
}
public Delegate GenerateMappingFunction(ProposedMap proposedMap)
{
var destination = Expression.Parameter(proposedMap.DestinationType, "destination");
var source = Expression.Parameter(proposedMap.SourceType, "source");
var assignments = new List<Expression>();
var newParams = new List<ParameterExpression>();
Expression condition;
if (typeof(IEnumerable).IsAssignableFrom(proposedMap.SourceType)
&& typeof(IEnumerable).IsAssignableFrom(proposedMap.DestinationType))
{
proposedMap.ProposedTypeMapping = new ProposedTypeMapping
{
ProposedTypeMappings = new List<ProposedTypeMapping>
{
proposedMap.ProposedTypeMapping,
},
IsEnumerable = true,
};
condition = Expression.Constant(true);
}
else
{
condition = Expression.NotEqual(source, Expression.Constant(null));
}
BuildTypeMappingExpressions(source, destination, proposedMap.ProposedTypeMapping, assignments, newParams, proposedMap.CustomMapping);
var block = Expression.Block(assignments);
var conditionCheck = Expression.IfThen(condition, block);
var outerBlock = Expression.Block(newParams, conditionCheck, destination);
var funcType = typeof(Func<,,>).MakeGenericType(proposedMap.SourceType, proposedMap.DestinationType, proposedMap.DestinationType);
var lambda = Expression.Lambda
(
funcType,
outerBlock,
source, destination
);
return CompileExpression(proposedMap.SourceType, proposedMap.DestinationType, lambda);
}
public LambdaExpression GetProjection(ProposedMap map)
{
sourceParam = Expression.Parameter(map.SourceType, "source");
var initRoot = BuildProjectionExpression(sourceParam, map.DestinationType, map.ProposedTypeMapping);
var funcType = typeof(Func <,>).MakeGenericType(map.SourceType, map.DestinationType);
var lambda = Expression.Lambda
(
funcType,
initRoot,
sourceParam
);
lambda = (LambdaExpression)processor.Process(lambda);
return(lambda);
}
public LambdaExpression GetProjection(ProposedMap map)
{
sourceParam = Expression.Parameter(map.SourceType, "source");
var initRoot = BuildProjectionExpression(sourceParam, map.DestinationType, map.ProposedTypeMapping);
var funcType = typeof(Func<,>).MakeGenericType(map.SourceType, map.DestinationType);
var lambda = Expression.Lambda
(
funcType,
initRoot,
sourceParam
);
lambda = (LambdaExpression)processor.Process(lambda);
return lambda;
}
public IMapGenerator GetGenerator(IMemberMapper mapper, ProposedMap proposedMap, MapperOptions options)
{
return new CompiledMapGenerator(mapper, proposedMap, options);
}
public IMapGenerator GetGenerator(IMemberMapper mapper, ProposedMap proposedMap, MapperOptions options)
{
return(new CompiledMapGenerator(mapper, proposedMap, options));
}
/// <summary>
/// Checks if the mapper repository contains a map and if so, returns it as an out parameter.
/// </summary>
/// <returns></returns>
public bool TryGetMap <TSource, TDestination>(IMemberMapper mapper, MemberOptions options, out ProposedMap <TSource, TDestination> map)
{
MapFuncWrapper action;
if (cache.TryGetValue(new TypePair(typeof(TSource), typeof(TDestination)), out action))
{
lock (action)
{
if (action.InUse)
{
map = null;
return(false);
}
try
{
action.InUse = true;
map = (ProposedMap <TSource, TDestination>)action.CreateMapFunction(mapper, options);
}
finally
{
action.InUse = false;
}
return(true);
}
}
map = null;
return(false);
}
/// <summary>
/// Checks if the mapper repository contains a map and if so, returns it as an out parameter.
/// </summary>
/// <returns></returns>
public bool TryGetMap(IMemberMapper mapper, MemberOptions options, TypePair pair, out ProposedMap map)
{
MapFuncWrapper action;
if (cache.TryGetValue(pair, out action))
{
lock (action)
{
if (action.InUse)
{
map = null;
return(false);
}
try
{
action.InUse = true;
map = action.CreateMapFunction(mapper, options);
}
finally
{
action.InUse = false;
}
return(true);
}
}
map = null;
return(false);
}
private static Type GetMatchingFuncOverload(ProposedMap map)
{
switch (map.ParameterTypes.Count)
{
case 0:
return typeof(Func<,,>).MakeGenericType(map.SourceType, map.DestinationType, map.DestinationType);
case 1:
return typeof(Func<,,,>).MakeGenericType(map.SourceType, map.DestinationType, map.ParameterTypes[0], map.DestinationType);
case 2:
return typeof(Func<,,,,>).MakeGenericType(map.SourceType, map.DestinationType, map.ParameterTypes[0], map.ParameterTypes[1], map.DestinationType);
case 3:
return typeof(Func<,,,,,,>).MakeGenericType(map.SourceType, map.DestinationType, map.ParameterTypes[0], map.ParameterTypes[1], map.ParameterTypes[2], map.DestinationType);
default:
throw new InvalidOperationException("No matching generic overload for Func found");
}
}
