/// <summary>
/// 保存日時を構文解析する
/// </summary>
/// <param name="lexer">字句解析器</param>
/// <param name="startDate">開始日時</param>
/// <returns>保存日時</returns>
private static Dictionary<int, GameDate> ParseSaveDate(TextLexer lexer, GameDate startDate)
{
// =
Token token = lexer.GetToken();
if (token.Type != TokenType.Equal)
{
Log.InvalidToken(LogCategory, token, lexer);
return null;
}
// {
token = lexer.GetToken();
if (token.Type != TokenType.OpenBrace)
{
Log.InvalidToken(LogCategory, token, lexer);
return null;
}
Dictionary<int, GameDate> dates = new Dictionary<int, GameDate>();
while (true)
{
token = lexer.GetToken();
// ファイルの終端
if (token == null)
{
break;
}
// } (セクション終端)
if (token.Type == TokenType.CloseBrace)
{
break;
}
// 無効なトークン
if (token.Type != TokenType.Number)
{
Log.InvalidToken(LogCategory, token, lexer);
lexer.SkipLine();
continue;
}
int id = (int) (double) token.Value;
int? n = ParseInt(lexer);
if (!n.HasValue)
{
Log.InvalidClause(LogCategory, IntHelper.ToString(id), lexer);
continue;
}
// 保存日時
GameDate date = startDate.Minus((int) n);
dates[id] = date;
}
return dates;
}
