/// <summary>
/// 建物のサイズを構文解析する
/// </summary>
/// <param name="lexer">字句解析器</param>
/// <returns>建物のサイズ</returns>
private static BuildingSize ParseSize(TextLexer lexer)
{
// =
Token token = lexer.GetToken();
if (token.Type != TokenType.Equal)
{
Log.InvalidToken(LogCategory, token, lexer);
return null;
}
// 相対サイズ指定
token = lexer.GetToken();
if (token.Type == TokenType.Number)
{
return new BuildingSize { Size = (double) token.Value };
}
// {
if (token.Type != TokenType.OpenBrace)
{
Log.InvalidToken(LogCategory, token, lexer);
return null;
}
BuildingSize size = new BuildingSize();
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.Identifier)
{
Log.InvalidToken(LogCategory, token, lexer);
lexer.SkipLine();
continue;
}
string keyword = token.Value as string;
if (string.IsNullOrEmpty(keyword))
{
continue;
}
keyword = keyword.ToLower();
// size
if (keyword.Equals("size"))
{
double? d = ParseDouble(lexer);
if (!d.HasValue)
{
Log.InvalidClause(LogCategory, "size", lexer);
continue;
}
if (d < 0)
{
Log.OutOfRange(LogCategory, "size", d, lexer);
continue;
}
// 最大サイズ
size.MaxSize = (double) d;
continue;
}
// current_size
if (keyword.Equals("current_size"))
{
double? d = ParseDouble(lexer);
if (!d.HasValue)
{
Log.InvalidClause(LogCategory, "current_size", lexer);
continue;
}
if (d < 0)
{
Log.OutOfRange(LogCategory, "current_size", d, lexer);
continue;
}
// 現在サイズ
size.CurrentSize = (double) d;
continue;
}
// 無効なトークン
Log.InvalidToken(LogCategory, token, lexer);
lexer.SkipLine();
}
return size;
}
/// <summary>
/// 建物のサイズを書き出す
/// </summary>
/// <param name="building">建物のサイズ</param>
/// <param name="writer">ファイル書き込み用</param>
private static void WriteBuilding(BuildingSize building, TextWriter writer)
{
if (DoubleHelper.IsZero(building.Size))
{
writer.Write("{{ size = {0} current_size = {1} }}", ObjectHelper.ToString(building.MaxSize),
ObjectHelper.ToString(building.CurrentSize));
}
else
{
writer.Write(ObjectHelper.ToString(building.Size));
}
}