System.IO.SearchPattern.Compile C# (CSharp) Méthode

		private void Compile (string pattern)
		{
			if (pattern == null || pattern.IndexOfAny (InvalidChars) >= 0)
				throw new ArgumentException ("Invalid search pattern.");

			if (pattern == "*") {	// common case
				ops = new Op (OpCode.True);
				return;
			}

			ops = null;

			int ptr = 0;
			Op last_op = null;
			while (ptr < pattern.Length) {
				Op op;
			
				switch (pattern [ptr]) {
				case '?':
					op = new Op (OpCode.AnyChar);
					++ ptr;
					break;

				case '*':
					op = new Op (OpCode.AnyString);
					++ ptr;
					break;
					
				default:
					op = new Op (OpCode.ExactString);
					int end = pattern.IndexOfAny (WildcardChars, ptr);
					if (end < 0)
						end = pattern.Length;

					op.Argument = pattern.Substring (ptr, end - ptr);
					if (ignore)
						op.Argument = op.Argument.ToLowerInvariant ();

					ptr = end;
					break;
				}

				if (last_op == null)
					ops = op;
				else
					last_op.Next = op;

				last_op = op;
			}

			if (last_op == null)
				ops = new Op (OpCode.End);
			else
				last_op.Next = new Op (OpCode.End);
		}