private static bool MatchPredicate(PackageModel packageModel, BinaryPredicate predicate)
{
var expr1 = predicate.Operand1 as Expression;
switch (predicate.Operator)
{
case Operator.OR:
return Match(packageModel, predicate.Operand1) || Match(packageModel, predicate.Operand2);
case Operator.AND:
return Match(packageModel, predicate.Operand1) && Match(packageModel, 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(packageModel, predicate);
case "arch": return MatchArchitecture(packageModel, predicate);
}
}
break;
}
return true;
}
private static bool MatchArchitecture(PackageModel packageModel, BinaryPredicate predicate)
{
var expr2 = predicate.Operand2 as Expression;
if (expr2 != null)
{
switch (predicate.Operator)
{
case Operator.EQUAL: return packageModel.Architecture == expr2.Value;
case Operator.NOTEQUAL: return packageModel.Architecture != expr2.Value;
}
}
return true;
}
private static bool MatchVersion(PackageModel packageModel, BinaryPredicate predicate)
{
var expr2 = predicate.Operand2 as Expression;
if (expr2 != null)
{
switch (predicate.Operator)
{
case Operator.EQUAL: return packageModel.Package.Version == expr2.Value;
case Operator.NOTEQUAL: return packageModel.Package.Version != expr2.Value;
case Operator.GREATERTHAN: return packageModel.Package.Version > expr2.Value;
case Operator.LESSTHAN: return packageModel.Package.Version < expr2.Value;
case Operator.GREATERTHANOREQUAL: return packageModel.Package.Version >= expr2.Value;
case Operator.LESSTHANOREQUAL: return packageModel.Package.Version <= expr2.Value;
}
}
return true;
}
