public SingleContextValueValueInjector(
LambdaExpression lambda,
MappingConfigInfo configInfo,
RequiredValuesSet requiredValues)
: base(lambda, configInfo)
{
_lambdaBody = lambda.Body;
if (requiredValues.Includes(Source))
{
_value = requiredValues.Source;
_replacementFactory = ctx => ctx.GetSourceAccess();
return;
}
if (requiredValues.Includes(Target))
{
_value = requiredValues.Target;
_replacementFactory = ctx => ctx.GetTargetAccess();
return;
}
if (requiredValues.Includes(ElementIndex))
{
_value = requiredValues.ElementIndex;
_replacementFactory = ctx => ctx.GetElementIndex();
}
if (requiredValues.Includes(CreatedObject))
{
_value = requiredValues.CreatedObject;
_replacementFactory = ctx => ctx.GetCreatedObject();
return;
}
if (requiredValues.Includes(ElementKey))
{
_value = requiredValues.ElementKey;
_replacementFactory = ctx => ctx.GetElementKey();
return;
}
if (requiredValues.Includes(Parent))
{
_value = requiredValues.Parent;
_replacementFactory = ctx => ctx.GetParentAccess();
}
}
public override Expression Inject(Type[] contextTypes, IMemberMapperData mapperData)
{
var replacements = _isInvocation
? FixedSizeExpressionReplacementDictionary.WithEqualKeys(RequiredValuesCount)
: FixedSizeExpressionReplacementDictionary.WithEquivalentKeys(RequiredValuesCount);
var context = CreateContext(contextTypes, mapperData);
if (_requiredValues.Includes(MappingContext))
{
replacements.Add(_requiredValues.MappingContext, context.GetMappingDataAccess());
}
if (_requiredValues.Includes(Source))
{
replacements.Add(_requiredValues.Source, context.GetSourceAccess());
}
if (_requiredValues.Includes(Target))
{
replacements.Add(_requiredValues.Target, context.GetTargetAccess());
}
if (_requiredValues.Includes(CreatedObject))
{
replacements.Add(_requiredValues.CreatedObject, context.GetCreatedObject());
}
if (_requiredValues.Includes(ElementIndex))
{
replacements.Add(_requiredValues.ElementIndex, context.GetElementIndex());
}
if (_requiredValues.Includes(ElementKey))
{
replacements.Add(_requiredValues.ElementKey, context.GetElementKey());
}
return(_lambdaBody.Replace(replacements));
}