/// <summary>
/// Updates the potentual blocks that could replace the current block
/// </summary>
/// <param name="value"></param>
/// <param name="bitDiffDiff"></param>
private void UpdateReplacingCalculations(ref OfcNumber value, int bitDiffDiff = 0)
{
// ReSharper disable once ForCanBeConvertedToForeach
for (var j = _appendingCalculationSavingGrade + 1; j < _replacingCalculations.Length; j++)
{
if (!_replacingCalculations[j].IsValid)
{
continue;
}
var replacingCalculation = _replacingCalculations[j];
var savingGrade = replacingCalculation.VirtualBlock.GetSavingGrade();
if (!replacingCalculation.ProcessValue(value, _index))
{
_replacingCalculations[j].IsValid = false;
continue;
}
if ((replacingCalculation.SavedBits += bitDiffDiff) > 0)
{
_replacingCalculations[j].IsValid = false;
_calculations.Clear(); //Todo: not jsut clear, but make a replacingCalc on this replacing calc ...
_hasRunningPatternCalculation = false;
if (!replacingCalculation.OldConcurrentBlock.IsValid) //Todo: check what this was
{
ReplaceNewestBlock(BlockCalculation.FromReplacingCalculation(replacingCalculation));
}
else
{
_blocks[_blocks.Count - 1] = replacingCalculation.OldConcurrentBlock; // set last block to old, non-overlapping state
AddNewBlock(BlockCalculation.FromReplacingCalculation(replacingCalculation));
}
break;
}
var newSavingGrade = replacingCalculation.VirtualBlock.GetSavingGrade();
if (savingGrade != newSavingGrade)
{
_replacingCalculations[(int)savingGrade].IsValid = false;
var overriddenCalc = _replacingCalculations[(int)newSavingGrade];
if (overriddenCalc.IsValid && overriddenCalc.SavedBits > replacingCalculation.SavedBits)
{
continue;
}
}
if (newSavingGrade <= replacingCalculation.OldConcurrentSavingGrade)
{
replacingCalculation.IsValid = false;
}
// replacingCalculations[j].IsValid = false;
_replacingCalculations[(int)newSavingGrade] = replacingCalculation;
}
}
/// <summary>
/// Replaces the current block with a potentual block
/// </summary>
/// <param name="with"></param>
private void ReplaceNewestBlock(BlockCalculation with)
{
_blocks[_blocks.Count - 1] = with.VirtualBlock;
_lastStableBlock = with.VirtualBlock;
_appendingCalculation = with;
_appendingCalculation.SavedBits = 0;
_appendingCalculationSavingGrade = (int)with.VirtualBlock.GetSavingGrade();
for (var i = 1; i < _replacingCalculations.Length; i++)
{
_replacingCalculations[i].IsValid = false;
}
}
/// <summary>
/// Creates a block from a potentual block, and sets it as current block
/// </summary>
/// <param name="calc"></param>
private void AddNewBlock(BlockCalculation calc)
{
_lastStableBlock = calc.VirtualBlock;
_appendingCalculation = calc;
_blocks.Add(calc.VirtualBlock);
_isAppendingCalculationValid = true;
_appendingCalculationSavingGrade = (int)calc.VirtualBlock.GetSavingGrade();
for (var i = 1; i < _replacingCalculations.Length; i++)
{
_replacingCalculations[i].IsValid = false;
}
}
/// <summary>
/// Does one step. Will update everything
/// </summary>
/// <returns></returns>
public bool ProcessNextValue()
{
var value = Values[_index];
var patternPred = _patternPredictor.PredictNext(value);
#region adding value to last block and updating replacing calculations
if (_isAppendingCalculationValid)
{
var lastBitDiff = _appendingCalculation.SavedBits;
var lastAppendingBlock = _appendingCalculation.VirtualBlock;
if (_appendingCalculation.ProcessValue(value, _index))
{
var bifDiffDiff = lastBitDiff - _appendingCalculation.SavedBits;
if (_appendingCalculation.SavedBits > 0)
{
if (_appendingCalculation.VirtualBlock.Length - _lastStableBlock.Length > 1) // we made a jump, maybe there were some calcs started in the meantime?
{
TransformCalcsToReplaceCalsOrDelete(lastAppendingBlock, _appendingCalculation.SavedBits);
}
ReplaceNewestBlock(_appendingCalculation);
}
_appendingCalculationSavingGrade = (int)_appendingCalculation.VirtualBlock.GetSavingGrade();
UpdateReplacingCalculations(ref value, bifDiffDiff);
if (patternPred && _appendingCalculationSavingGrade < (int)Block.SavingGrade.Pattern && !_replacingCalculations[(int)Block.SavingGrade.Pattern].IsValid)
{
var block = new Block(_index, value.Exponent, value.NeededBitsNumber, value.IsNegative, value.Number, this, Methods.PatternSame, true);
var calc = _replacingCalculations[(int)Block.SavingGrade.Pattern];
calc.Initialize(-Headers.StandardBlockPatternSame, block, lastAppendingBlock, (Block.SavingGrade)_appendingCalculationSavingGrade);
if (calc.ProcessValue(value, _index))
{
_replacingCalculations[(int)Block.SavingGrade.Pattern] = calc;
}
}
}
else
{
UpdateReplacingCalculations(ref value);
_isAppendingCalculationValid = false;
}
}
else
{
UpdateReplacingCalculations(ref value);
}
#endregion
#region updating current calculations if nessecary
var isLastBlockUp2Date = _lastStableBlock.Index + _lastStableBlock.Length - 1 == _index;
for (var j = 0; j < _calculations.Count; j++)
{
var calc = _calculations[j];
// Todo: we shouldn't only remove calculations that are super far away, we should also remove calculations that have a very negative calc.SavedBits
var hasPattern = calc.VirtualBlock.HasPattern;
if (!calc.ProcessValue(value, _index))
{
if (hasPattern)
{
_hasRunningPatternCalculation = false;
}
_calculations.RemoveAt(j--); // There was some error / the block is impossible, e.g. the exps are different and you can't even correct the values because of overflows ...
continue;
}
if (hasPattern && !calc.VirtualBlock.HasPattern)
{
//throw new Exception("c#er is wrong");
_hasRunningPatternCalculation = false;
}
if (calc.SavedBits > 0)
{
if (calc.VirtualBlock.HasPattern)
{
_hasRunningPatternCalculation = false;
}
if (_lastStableBlock.Index + _lastStableBlock.Length - 1 >= calc.VirtualBlock.Index)
{
#if debug
Console.WriteLine(_debugCounter);
_debugSkip = 0;
_debugEnabled = true;
#endif
_calculations.RemoveAt(j--);
continue;
throw new InvalidOperationException("Blocks sharing values! (ノ° ͜ʖ ͡°)ノ︵┻┻ ");
}
AddNewBlock(calc);
isLastBlockUp2Date = true;
for (var k = j + 1; k < _calculations.Count; k++) // we need to update the rest here or they jump one update tick if they get transformed to ReplaceCalcs ...
{
var calc2 = _calculations[k];
if (!calc2.ProcessValue(value, _index))
{
_calculations.RemoveAt(k--);
continue;
}
_calculations[k] = calc2;
}
TransformCalcsToReplaceCalsOrDelete(Block.InvalidBlock, calc.SavedBits, j); // we give an invalid block because the just created block and the already running calc could never co-exist. The just created block will get deleted if a replacing calc with an invalid oldConcurrentBLock gets founded
break; // Bug: actually, breaking here is pretty bad. There could be multiple calculations that want to create a block, and maybe this is not the best one. Saves some performance though
}
_calculations[j] = calc;
}
#endregion
#region starting new calculations if nessecary
//if (isLastBlockUp2Date)
//{
// if (patternPred && _appendingCalculationSavingGrade < (int)Block.SavingGrade.Pattern && !_replacingCalculations[(int)Block.SavingGrade.Pattern].IsValid)
// {
// var block = new Block(_index, value.Exponent, value.NeededBitsNumber, value.IsNegative, value.Number, this, Methods.PatternSame, true);
// var calc = _replacingCalculations[(int)Block.SavingGrade.Pattern];
// calc.Initialize(-Headers.StandardBlockPatternSame, block, _lastStableBlock, (Block.SavingGrade)_appendingCalculationSavingGrade);
// if (calc.ProcessValue(ref value, _index))
// _replacingCalculations[(int)Block.SavingGrade.Pattern] = calc;
// }
//}
//else
if (!_hasRunningPatternCalculation && !isLastBlockUp2Date)
{
if (patternPred)
{
var calc = new BlockCalculation(-Headers.StandardBlockPatternSame, new Block(_index, value.Exponent, 0, false, value.Number, this, Methods.PatternSame, true));
if (calc.ProcessValue(value, _index))
{
_calculations.Add(calc);
_hasRunningPatternCalculation = true;
}
}
else
{
var hasExp = false;
foreach (var runningCalculation in _calculations) //Todo: pre calculate that (bool array?)
{
if (runningCalculation.VirtualBlock.Exponent == value.Exponent)
{
hasExp = true;
break;
}
}
if (!hasExp)
{
BlockCalculation calc;
// ReSharper disable once ConvertIfStatementToConditionalTernaryExpression - You can't see **** if you do a ?:
if (value.Exponent == 0)
{
calc = new BlockCalculation(-Headers.StandardBlockNumbersNoExp, new Block(_index, 0, value.NeededBitsNumber, value.IsNegative, value.Number, this, Methods.NumbersNoExp, false));
}
else
{
calc = new BlockCalculation(-Headers.StandardBlockFloatSimmilar, new Block(_index, value.Exponent, value.NeededBitsNumber, value.IsNegative, value.Number, this, Methods.FloatSimmilar, false));
}
if (calc.ProcessValue(value, _index))
{
_calculations.Add(calc);
}
else
{
throw new Exception("Nice blockfinding Kappa");
}
}
}
}
#endregion
return(++_index < ValueCount);
}