IType InferGeneratorItemTypeFor(InternalMethod generator)
{
if (TypeSystemServices.IsGenericGeneratorReturnType(generator.ReturnType))
{
return(generator.ReturnType.ConstructedInfo.GenericArguments[0]);
}
var yieldExpressions = generator.YieldExpressions;
return(yieldExpressions.Count > 0
? TypeSystemServices.GetMostGenericType(yieldExpressions)
: TypeSystemServices.ObjectType);
}
private IType GetMostGenericType(BinaryExpression node)
{
return(TypeSystemServices.GetMostGenericType(GetExpressionType(node.Left), GetExpressionType(node.Right)));
}