private static string?DisplayNameResolver(Type type, MemberInfo memberInfo, LambdaExpression expression)
{
if (memberInfo == null)
{
return(null);
}
return(_displayNameCache.GetOrAdd(memberInfo, memberInfo => {
if (!AttributeUtility.GetMemberNameFromNameAttributes(memberInfo, out string?name))
{
name = _defaultDisplayNameResolver(type, memberInfo, expression);
}
return name;
}));
}
public static IRuleBuilderOptions <T, TProperty> WithNameFromDataAttribute <T, TProperty>(this IRuleBuilderOptions <T, TProperty> ruleBuilderOptions)
{
// Use reflection since contravariance only works with interface and delegates,
// and we need it to handle generic collections.
// Example: RuleBuilder<object, ICollection<object>> can't be cast to RuleBuilder<object, ICollection<object>>
if (ruleBuilderOptions.GetType().GetGenericTypeDefinition() != typeof(RuleBuilder <,>))
{
throw new ValidationException($"Expected a RuleBuilder<{typeof(T).FullName}, {typeof(TProperty).FullName}>, got {ruleBuilderOptions.GetType().FullName}");
}
PropertyInfo ruleBuilderRulePropertyInfo = ruleBuilderOptions.GetType().GetProperty(nameof(RuleBuilder <T, TProperty> .Rule)) !;
PropertyRule rule = (PropertyRule)ruleBuilderRulePropertyInfo.GetValue(ruleBuilderOptions) !;
if (AttributeUtility.GetMemberNameFromNameAttributes(rule.Member, out string?dataName))
{
ruleBuilderOptions.OverridePropertyName(dataName);
}
return(ruleBuilderOptions);
}