public static PacketFilterObject Parse(string exp)
{
try {
if (exp == null)
{
return(null);
}
if (exp.Length == 0)
{
return(null);
}
var scanner = new Scanner();
scanner.SetSource(exp, 0);
var parser = new PacketFilterParser(exp);
parser.Scanner = scanner;
if (!parser.Parse())
{
return(null);
}
return(parser.exp_obj_);
} catch {
return(null);
}
}
public static PacketFilterObject Compile(string exp_text)
{
/* 式オブジェクトに変換 */
return(PacketFilterParser.Parse(exp_text));
}