public InvalidParseTableException(ParseTableExceptionType exceptions, IParseTable <T> invalidTable, int state = -1, GrammarElement <T> nextInput = null)
: base(createExceptionMsg(exceptions))
{
ParseTable = invalidTable;
State = state;
NextInput = nextInput;
}
public ParseTableConflict(ParseTableExceptionType conflictType, ColumnRowPair <int, Terminal <T> > tableLocation, StateNode <GrammarElement <T>, LRItem <T>[]> graphLocation, params LRItem <T>[] conflictingItems)
{
TableLocation = tableLocation;
GraphLocation = graphLocation;
ConflictType = conflictType;
ConflictingItems = new ReadOnlyCollection <LRItem <T> >(conflictingItems.ToList());
}
private static string createExceptionMsg(ParseTableExceptionType exceptions)
{
var b = new StringBuilder();
b.Append("The parse table contains the following conflicts: {");
//shift-reduce conflict
if ((exceptions & ParseTableExceptionType.SHIFT_REDUCE) == ParseTableExceptionType.SHIFT_REDUCE)
{
b.Append("SHIFT_REDUCE,");
}
//reduce-reduce conflict
if ((exceptions & ParseTableExceptionType.REDUCE_REDUCE) == ParseTableExceptionType.REDUCE_REDUCE)
{
b.Append(" REDUCE_REDUCE,");
}
//first-set clash
if ((exceptions & ParseTableExceptionType.FIRST_SET) == ParseTableExceptionType.FIRST_SET)
{
b.Append(" FIRST_SET_CLASH");
}
string s = b.ToString();
//remove possible trailing ','
if (s.Last() == ',')
{
s = s.Remove(s.Length - 1);
}
s += " }";
return(s);
}
