public override Expression Bind(object[] args, ReadOnlyCollection <ParameterExpression> parameters, LabelTarget returnLabel)
{
if (args.Length == 1)
{
Debug.Assert(this == Instance0, "Use Instance0 when passing 0 args");
var criteria = new FormatSelectionCriteria();
if (args[0] is PSObject psobj)
{
criteria.Type = psobj.BaseObject.GetType();
}
else
{
criteria.Type = args[0].GetType();
}
var directive = FormatSelector.FindDirective(criteria) ?? FormatGenerator.Generate(criteria.Type);
return(directive.Bind(parameters[0], args[0].GetType(), Expression.Constant(directive), returnLabel));
}
if (args.Length == 2)
{
Debug.Assert(this == Instance1, "Use Instance0 when passing 0 args");
switch (args[1])
{
case ListFormat listFormat:
return(listFormat.Bind(parameters[0], args[0].GetType(), parameters[1], returnLabel));
}
}
throw new Exception();
}
static FormatSelector()
{
foreach (var type in typeof(FormatSelector).Assembly.GetTypes())
{
foreach (var cad in type.GetCustomAttributesData())
{
if (cad.AttributeType != typeof(FormatProxyAttribute))
{
continue;
}
if (cad.ConstructorArguments.Count != 1)
{
continue;
}
var proxyOf = cad.ConstructorArguments[0].Value as Type;
if (proxyOf == null)
{
continue;
}
if (!FormatDefinitions.TryGetValue(proxyOf, out var directives))
{
directives = new List <FormatDirective>();
FormatDefinitions.Add(proxyOf, directives);
}
FormatGenerator.Generate(type, directives);
}
}
}
