internal static bool TryGetMemberValueCore(object owner, MemberToken token, out object value)
{
value = null;
var memberInfo = GetMemberInfo(owner, token);
if (memberInfo == null)
{
return(false);
}
switch (memberInfo.MemberType)
{
case MemberTypes.Field:
value = ((FieldInfo)memberInfo).GetValue(owner);
return(true);
case MemberTypes.Property:
value = ((PropertyInfo)memberInfo).GetValue(owner, token.Parameters);
return(true);
case MemberTypes.Method:
value = ((MethodInfo)memberInfo).Invoke(owner, token.Parameters);
return(true);
}
return(false);
}
internal static void SetMemberValueCore <T>(object owner, MemberToken member, Func <T> valueFactory)
{
if (owner == null)
{
throw new ArgumentNullException(nameof(owner));
}
var type = owner is Type ? (Type)owner : owner.GetType();
var memberInfo = GetMemberInfo(type, member);
if (memberInfo == null)
{
throw new ArgumentException(string.Format("The '{0}' member is not exists in the '{1}' type.", member, (owner is Type ? ((Type)owner).FullName : owner.GetType().FullName)));
}
switch (memberInfo.MemberType)
{
case MemberTypes.Field:
((FieldInfo)memberInfo).SetValue(owner, valueFactory());
break;
case MemberTypes.Property:
((PropertyInfo)memberInfo).SetValue(owner, valueFactory());
break;
default:
throw new InvalidOperationException($"Dont support set value of '{member}' member in the '{type}' type.");
}
}
internal MemberSettingContext(object owner, MemberToken memberToken, Func <T> valueFactory, MemberGettingContext parent = null) : base(owner, memberToken, parent)
{
if (valueFactory == null)
{
throw new ArgumentNullException(nameof(valueFactory));
}
_valueFactory = valueFactory;
}
internal MemberGettingContext(object owner, MemberToken member, MemberGettingContext parent = null)
{
if(owner == null)
throw new ArgumentNullException(nameof(owner));
if(member == null)
throw new ArgumentNullException(nameof(member));
_owner = owner;
_parent = parent;
_memberToken = member;
}
public MemberToken GetMember(Type type, string path)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (string.IsNullOrEmpty(path))
{
return(null);
}
var parts = path.Split('.');
var members = this.GetMembers(type);
MemberToken member = null;
for (int i = 0; i < parts.Length; i++)
{
var part = parts[i].Trim();
if (string.IsNullOrEmpty(part) || part == "*")
{
var elementType = Common.TypeExtension.GetCollectionElementType(member == null ? type : member.Type);
if (elementType == null)
{
return(null);
}
members = this.GetMembers(elementType);
}
else
{
if (members != null && members.TryGet(part, out member))
{
members = this.GetMembers(member.Type);
}
else
{
return(null);
}
}
}
return(member);
}
internal static MemberInfo GetMemberInfo(object owner, MemberToken token)
{
if (owner == null)
{
return(null);
}
var type = owner is Type ? (Type)owner : owner.GetType();
var members = type.FindMembers(MemberTypes.Field | MemberTypes.Property, BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static, (member, criteria) =>
{
MemberToken memberToken = (MemberToken)criteria;
if (memberToken.IsIndexer && member.MemberType == MemberTypes.Property)
{
var parameters = ((PropertyInfo)member).GetIndexParameters();
if (parameters.Length != memberToken.Parameters.Length)
{
return(false);
}
for (int i = 0; i < parameters.Length; i++)
{
if (parameters[i].ParameterType != memberToken.Parameters[i].GetType())
{
return(false);
}
}
return(true);
}
return(string.Equals(member.Name, memberToken.Name, StringComparison.OrdinalIgnoreCase));
}, token);
if (members != null && members.Length > 0)
{
return(members[0]);
}
return(null);
}
internal MemberSettingContext(object owner, MemberToken memberToken, T value, MemberGettingContext parent = null) : base(owner, memberToken, parent)
{
_value = value;
_valueEvaluated = 1;
}