private static object ResolveValue(BindingContext context, object instance, ChainSegment chainSegment)
{
object resolvedValue;
if (chainSegment.IsVariable)
{
return(context.TryGetContextVariable(chainSegment, out resolvedValue)
? resolvedValue
: chainSegment.GetUndefinedBindingResult(context.Configuration));
}
if (chainSegment.IsThis)
{
return(instance);
}
if (context.TryGetVariable(chainSegment, out resolvedValue) ||
TryAccessMember(instance, chainSegment, context.Configuration, out resolvedValue))
{
return(resolvedValue);
}
if (chainSegment.IsValue && context.TryGetContextVariable(chainSegment, out resolvedValue))
{
return(resolvedValue);
}
return(chainSegment.GetUndefinedBindingResult(context.Configuration));
}
public static bool TryAccessMember(object instance, ChainSegment chainSegment, ICompiledHandlebarsConfiguration configuration, out object value)
{
if (instance == null)
{
value = chainSegment.GetUndefinedBindingResult(configuration);
return(false);
}
chainSegment = ResolveMemberName(instance, chainSegment, configuration);
value = null;
return(ObjectDescriptor.TryCreate(instance, configuration, out var descriptor) &&
descriptor.MemberAccessor.TryGetValue(instance, chainSegment, out value));
}
