Mono.CSharp.CSharpParser.GetExpecting C# (CSharp) Method

string GetExpecting ()
{
	int [] tokens = yyExpectingTokens (yyExpectingState);
	var names = new List<string> (tokens.Length);
	bool has_type = false;
	bool has_identifier = false;
	for (int i = 0; i < tokens.Length; i++){
		int token = tokens [i];
		has_identifier |= token == Token.IDENTIFIER;
		
		string name = GetTokenName (token);
		if (name == "<internal>")
			continue;
			
		has_type |= name == "type";
		if (names.Contains (name))
			continue;
		
		names.Add (name);
	}

	//
	// Too many tokens to enumerate
	//
	if (names.Count > 8)
		return null;

	if (has_type && has_identifier)
		names.Remove ("identifier");

	if (names.Count == 1)
		return "`" + GetTokenName (tokens [0]) + "'";
	
	StringBuilder sb = new StringBuilder ();
	names.Sort ();
	int count = names.Count;
	for (int i = 0; i < count; i++){
		bool last = i + 1 == count;
		if (last)
			sb.Append ("or ");
		sb.Append ('`');
		sb.Append (names [i]);
		sb.Append (last ? "'" : count < 3 ? "' " : "', ");
	}
	return sb.ToString ();
}