public void Parse()
{
StringtoElementsParser toElementsParser = new StringtoElementsParser(text);
toElementsParser.Parse();
ElementsToLayersParser toLayersParser = new ElementsToLayersParser(toElementsParser.Elements);
toLayersParser.Parse();
topLayer = toLayersParser.TopLayer;
}
private void AddFirstToLayerAndDeleteFromList(AddSubtractLayer layer, List<IElement> els)
{
bool isAddition = true;
if (els[0] is MinusElement) isAddition = false;
if (els[0] is PlusElement || els[0] is MinusElement) els.RemoveAt(0);
int length = GetFirstIndexOrCount(els, typeof(PlusElement), typeof(MinusElement));
ElementsToLayersParser parser = new ElementsToLayersParser(els.GetRange(0, length));
parser.Parse();
if (isAddition) layer.Additions.Add(parser.TopLayer);
if (!isAddition) layer.Subtractions.Add(parser.TopLayer);
els.RemoveRange(0, length);
}
private void AddFirstToLayerAndDeleteFromList(MultiplyDivideLayer layer, List<IElement> els)
{
bool isFactor = true;
if (els[0] is DivideElement) isFactor = false;
if (els[0] is MultiplyElement || els[0] is DivideElement) els.RemoveAt(0);
int length = GetFirstIndexOrCount(els, typeof(MultiplyElement), typeof(DivideElement));
ElementsToLayersParser parser = new ElementsToLayersParser(els.GetRange(0, length));
parser.Parse();
if (isFactor) layer.Factors.Add(parser.TopLayer);
if (!isFactor) layer.Divisors.Add(parser.TopLayer);
els.RemoveRange(0, length);
}
private void ParseMiddleOperatorType(List<IElement> els, Type operatorType, out ILayer before, out ILayer after)
{
int indexOfPowerSymbol = GetFirstIndexOrCount(els, operatorType);
ElementsToLayersParser parser = new ElementsToLayersParser(els.GetRange(0, indexOfPowerSymbol));
parser.Parse();
before = parser.TopLayer;
parser = new ElementsToLayersParser(els.GetRange(indexOfPowerSymbol + 1, els.Count - indexOfPowerSymbol - 1));
parser.Parse();
after = parser.TopLayer;
}
private void ParseBeginWithParameterType(List<IElement> els, out ILayer parameter, out ILayer layer)
{
els.RemoveAt(0);
int indexOfSecondUnderscore = 1 + GetFirstIndexOrCount(els.GetRange(1, els.Count - 1), typeof(UnderscoreElement));
if (indexOfSecondUnderscore == els.Count || !(els[0] is UnderscoreElement)) throw new MissingUnderscoreException();
ElementsToLayersParser parser = new ElementsToLayersParser(els.GetRange(1, indexOfSecondUnderscore - 1));
parser.Parse();
parameter = parser.TopLayer;
els.RemoveRange(0, indexOfSecondUnderscore + 1);
parser = new ElementsToLayersParser(new List<IElement>(els));
parser.Parse();
layer = parser.TopLayer;
}
private void ParseBeginWithoutParameterType(List<IElement> els, out ILayer layer)
{
els.RemoveAt(0);
ElementsToLayersParser parser = new ElementsToLayersParser(els);
parser.Parse();
layer = parser.TopLayer;
}
public static Term FromElements(List<IElement> elements)
{
ElementsToLayersParser parser = new ElementsToLayersParser(elements);
parser.Parse();
return new Term(parser.TopLayer);
}