public Expression CastMethod(CastMethod method, LiteralExpression[] arguments)
{
Debug.Assert(arguments[1].LiteralType == LiteralType.String);
if (arguments[0].LiteralType == LiteralType.Null)
{
return(arguments[0]);
}
var type = LiteralUtil.GetCompatibleType((string)arguments[1].Value);
try
{
return(new LiteralExpression(Convert.ChangeType(arguments[0].Value, type, CultureInfo.InvariantCulture)));
}
catch (Exception ex)
{
throw new ODataException(
String.Format(
ErrorMessages.Method_CannotCast, arguments[1].Value
),
ex
);
}
}
public Expression IsOfMethod(IsOfMethod method, LiteralExpression[] arguments)
{
Debug.Assert(arguments[1].LiteralType == LiteralType.String);
var type = LiteralUtil.GetCompatibleType((string)arguments[1].Value);
return(new LiteralExpression(type.IsInstanceOfType(arguments[0].Value), LiteralType.Boolean));
}
