internal static object[] GetIndexerValues(string path, IList <ParameterInfo> parameters = null, Type castType = null)
{
if (path.StartsWith("Item[", StringComparison.Ordinal))
{
path = path.Substring(4);
}
if (!path.StartsWith("[", StringComparison.Ordinal))
{
return(Empty.Array <object>());
}
var args = path
.RemoveBounds()
.Split(CommaSeparator, StringSplitOptions.RemoveEmptyEntries);
var result = new object[args.Length];
for (int i = 0; i < args.Length; i++)
{
var s = args[i];
if (parameters != null)
{
castType = parameters[i].ParameterType;
}
if (!string.IsNullOrEmpty(s) && s[0] == '\"' && s.EndsWith("\""))
{
s = s.RemoveBounds();
}
result[i] = s == "null" ? null : BindingServiceProvider.ValueConverter(BindingMemberInfo.Empty, castType, s);
}
return(result);
}
internal static bool TryGetStaticValue <T>(this Expression expression, out T value, bool throwOnError)
{
try
{
object v;
var exp = expression as ConstantExpression;
if (exp == null)
{
v = Expression.Lambda(expression, Empty.Array <ParameterExpression>())
.Compile()
.DynamicInvoke(Empty.Array <object>());
}
else
{
v = exp.Value;
}
value = (T)BindingServiceProvider.ValueConverter(BindingMemberInfo.Empty, typeof(T), v);
return(true);
}
catch (Exception e)
{
value = default(T);
if (throwOnError)
{
throw ExceptionManager.ExpressionShouldBeStaticValue(expression, e);
}
return(false);
}
}
internal static object[] GetIndexerValues(IList <ParameterInfo> parameters, string path, Type castType = null)
{
string replace = path.Replace("[", string.Empty).Replace("]", string.Empty);
var strings = replace.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);
var result = new object[strings.Length];
for (int i = 0; i < strings.Length; i++)
{
var s = strings[i];
if (parameters != null)
{
castType = parameters[i].ParameterType;
}
result[i] = s == "null" ? null : BindingServiceProvider.ValueConverter(castType, s);
}
return(result);
}