private static bool MatchPredicate(PackageItem package, BinaryPredicate predicate)
{
var expr1 = predicate.Operand1 as Expression;
switch (predicate.Operator)
{
case Operator.Or:
return Match(package, predicate.Operand1) || Match(package, predicate.Operand2);
case Operator.And:
return Match(package, predicate.Operand1) && Match(package, predicate.Operand2);
case Operator.Equal:
case Operator.NotEqual:
case Operator.GreaterThan:
case Operator.LessThan:
case Operator.GreaterThanOrEqual:
case Operator.LessThanOrEqual:
if (expr1 != null)
{
switch (expr1.Value)
{
case "version": return MatchVersion(package, predicate);
}
}
break;
}
return true;
}
private static bool MatchVersion(PackageItem package, BinaryPredicate predicate)
{
var expr2 = predicate.Operand2 as Expression;
if (expr2 != null)
{
try
{
switch (predicate.Operator)
{
case Operator.Equal: return AsVersion(package.PackageIdentity.Version) == AsVersion(expr2.Value);
case Operator.NotEqual: return AsVersion(package.PackageIdentity.Version) != AsVersion(expr2.Value);
case Operator.GreaterThan: return AsVersion(package.PackageIdentity.Version) > AsVersion(expr2.Value);
case Operator.LessThan: return AsVersion(package.PackageIdentity.Version) < AsVersion(expr2.Value);
case Operator.GreaterThanOrEqual: return AsVersion(package.PackageIdentity.Version) >= AsVersion(expr2.Value);
case Operator.LessThanOrEqual: return AsVersion(package.PackageIdentity.Version) <= AsVersion(expr2.Value);
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
return true;
}
