private void ParseElement(Production node, ProductionPatternElement elem)
{
var num = elem.MaxCount - 1;
for (var i = 0; i <= num; i++)
{
var flag = i < elem.MinCount || this.IsNext(elem);
if (!flag)
{
break;
}
var flag2 = elem.IsToken();
if (flag2)
{
Node child = this.NextToken(elem.Id);
this.EnterNode(child);
this.AddNode(node, this.ExitNode(child));
}
else
{
var child = this.ParsePattern(this.GetPattern(elem.Id));
this.AddNode(node, child);
}
}
}
private void CheckElement(string name, ProductionPatternElement elem)
{
var flag = elem.IsProduction() && this.GetPattern(elem.Id) == null;
if (flag)
{
throw new ParserCreationException(ParserCreationException.ErrorType.INVALID_PRODUCTION, name,
Conversions.ToString(Conversions.ToDouble("an undefined production pattern id (") +
elem.Id + Conversions.ToDouble(") is referenced")));
}
}
public void AddElement(ProductionPatternElement elem, int min, int max)
{
var flag = elem.IsToken();
if (flag)
{
this.AddToken(elem.Id, min, max);
}
else
{
this.AddProduction(elem.Id, min, max);
}
}
private string ToString(ProductionPatternElement elem)
{
var buffer = new StringBuilder();
var min = elem.MinCount;
var max = elem.MaxCount;
var flag = min == 0 && max == 1;
if (flag)
{
buffer.Append("[");
}
var flag2 = elem.IsToken();
buffer.Append(flag2 ? this.GetTokenDescription(elem.Id) : this.GetPattern(elem.Id).Name);
var flag3 = min == 0 && max == 1;
if (flag3)
{
buffer.Append("]");
}
else
{
var flag4 = min == 0 && max == 2147483647;
if (flag4)
{
buffer.Append("*");
}
else
{
var flag5 = min == 1 && max == 2147483647;
if (flag5)
{
buffer.Append("+");
}
else
{
var flag6 = min != 1 || max != 1;
if (flag6)
{
buffer.Append("{");
buffer.Append(min);
buffer.Append(",");
buffer.Append(max);
buffer.Append("}");
}
}
}
}
return(buffer.ToString());
}
private bool IsNext(ProductionPatternElement elem)
{
var set = elem.LookAhead;
var flag = set != null;
bool isNext;
if (flag)
{
isNext = set.IsNext(this);
}
else
{
var flag2 = elem.IsToken();
isNext = flag2 ? elem.IsMatch(this.PeekToken(0)) : this.IsNext(this.GetPattern(elem.Id));
}
return(isNext);
}
private LookAheadSet FindLookAhead(ProductionPatternElement elem, int length, CallStack stack, LookAheadSet filter)
{
var first = this.FindLookAhead(elem, length, 0, stack, filter);
var result = new LookAheadSet(length);
result.AddAll(first);
var flag = filter == null || !filter.IsOverlap(result);
LookAheadSet findLookAhead;
if (flag)
{
findLookAhead = result;
}
else
{
var flag2 = elem.MaxCount == 2147483647;
if (flag2)
{
first = first.CreateRepetitive();
}
var max = elem.MaxCount;
var flag3 = length < max;
if (flag3)
{
max = length;
}
var num = max - 1;
for (var i = 1; i <= num; i++)
{
first = first.CreateOverlaps(filter);
var flag4 = first.Size() <= 0 || first.GetMinLength() >= length;
if (flag4)
{
break;
}
var follow = this.FindLookAhead(elem, length, 0, stack, filter.CreateFilter(first));
first = first.CreateCombination(follow);
result.AddAll(first);
}
findLookAhead = result;
}
return(findLookAhead);
}
// ReSharper disable once UnusedParameter.Local
private LookAheadSet FindLookAhead(ProductionPatternElement elem, int length, int dummy, CallStack stack, LookAheadSet filter)
{
var flag = elem.IsToken();
LookAheadSet result;
if (flag)
{
result = new LookAheadSet(length);
result.Add(elem.Id);
}
else
{
var pattern = this.GetPattern(elem.Id);
result = this.FindLookAhead(pattern, length, stack, filter);
var flag2 = stack.Contains(pattern.Name);
if (flag2)
{
result = result.CreateRepetitive();
}
}
return(result);
}
public void AddElement(ProductionPatternElement elem)
{
this.elements.Add(elem);
}