NTERA/NTERA.EmuEra/Game/EraEmu/GameData/Variable/VariableLocal.cs

using System.Collections.Generic;
using NTERA.EmuEra.Game.EraEmu.GameProc;

namespace NTERA.EmuEra.Game.EraEmu.GameData.Variable
{
	internal delegate LocalVariableToken CreateLocalVariableToken(VariableCode varCode, string subKey, int size);
	internal sealed class VariableLocal
	{
		public VariableLocal(VariableCode varCode, int size, CreateLocalVariableToken creater)
		{
			this.size = size;
			this.varCode = varCode;
			this.creater = creater;
		}
		readonly int size;
		public bool IsForbid => size == 0;

		VariableCode varCode;
		//VariableData varData;
		CreateLocalVariableToken creater;
		private readonly Dictionary<string, LocalVariableToken> localVarTokens = new Dictionary<string, LocalVariableToken>();
		public LocalVariableToken GetExistLocalVariableToken(string subKey)
		{
			LocalVariableToken ret = null;
			if (localVarTokens.TryGetValue(subKey, out ret))
				return ret;
			return ret;
		}

        public int GetDefaultSize()
        {
            return size;
        }

        public LocalVariableToken GetNewLocalVariableToken(string subKey, FunctionLabelLine func)
        {
            LocalVariableToken ret = null;
            int newSize = 0;
            if (varCode == VariableCode.LOCAL)
                newSize = func.LocalLength;
            else if (varCode == VariableCode.LOCALS)
                newSize = func.LocalsLength;
            else if (varCode == VariableCode.ARG)
                newSize = func.ArgLength;
            else if (varCode == VariableCode.ARGS)
                newSize = func.ArgsLength;
			if (newSize > 0)
			{
				if((newSize < size) && ((varCode == VariableCode.ARG) || (varCode == VariableCode.ARGS)))
					newSize = size;
				ret = creater(varCode, subKey, newSize);
			}
			else if (newSize == 0)
				ret = creater(varCode, subKey, size);
			else
			{
				ret = creater(varCode, subKey, size);
				LogicalLine line = GlobalStatic.Process.GetScaningLine();
                if (line != null)
                {
                    if (!func.IsSystem)
						ParserMediator.Warn("関数宣言に引数変数\"" + varCode + "\"が使われていない関数中で\"" + varCode + "\"が使われています(関数の引数以外の用途に使うことは推奨されません。代わりに#DIMの使用を検討してください)", line, 1, false, false);
                    else
						ParserMediator.Warn("システム関数" + func.LabelName + "中で\"" + varCode + "\"が使われています(関数の引数以外の用途に使うことは推奨されません。代わりに#DIMの使用を検討してください)", line, 1, false, false);
                }
				//throw new CodeEE("この関数に引数変数\"" + varCode + "\"は定義されていません");
			}
            localVarTokens.Add(subKey, ret);
            return ret;
        }

        public void ResizeLocalVariableToken(string subKey, int newSize)
        {
            LocalVariableToken ret = null;
            if (localVarTokens.TryGetValue(subKey, out ret))
            {
                if (size < newSize)
                    ret.resize(newSize);
                else
                    ret.resize(size);
            }
            else
            {
                if (newSize > size)
                    ret = creater(varCode, subKey, newSize);
                else if (newSize == 0)
                    ret = creater(varCode, subKey, size);
                else
                    return;
                localVarTokens.Add(subKey, ret);
            }
        }

        public void Clear()
		{
			localVarTokens.Clear();
		}

        public void SetDefault()
		{
			foreach (KeyValuePair<string, LocalVariableToken> pair in localVarTokens)
				pair.Value.SetDefault();
		}
    }

    
    
}