public override IList <string> GetFirsts()
{
var result = new StringList();
result.AddRange(Prefixes);
//we assume that prefix is always optional, so string can start with start-end symbol
result.AddRange(_startSymbolsFirsts.Select(ch => ch.ToString()));
return(result);
}
}//constructor
public override IList <string> GetFirsts()
{
var result = new StringList();
result.AddRange(Firsts);
return(result);
}
public CommentTerminal(string name, string startSymbol, params string[] endSymbols) : base(name, TokenCategory.Comment)
{
StartSymbol = startSymbol;
EndSymbols = new StringList();
EndSymbols.AddRange(endSymbols);
Priority = TerminalPriority.High; //assign max priority
}
public override IList <string> GetFirsts()
{
var firsts = new StringList();
firsts.AddRange(LineTerminators.Select(t => t.ToString()));
return(firsts);
}
public override IList <string> GetFirsts()
{
StringList result = new StringList();
result.AddRange(base.Prefixes);
//we assume that prefix is always optional, so number can always start with plain digit
result.AddRange(new string[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" });
// Python float numbers can start with a dot
if (IsSet(NumberOptions.AllowStartEndDot))
{
result.Add(DecimalSeparator.ToString());
}
if (IsSet(NumberOptions.AllowSign))
{
result.AddRange(new string[] { "-", "+" });
}
return(result);
}
public static string JoinStrings(string separator, IEnumerable <string> values)
{
StringList list = new StringList();
list.AddRange(values);
string[] arr = new string[list.Count];
list.CopyTo(arr, 0);
return(string.Join(separator, arr));
}
public LineContinuationTerminal(string name, params string[] startSymbols) : base(name, TokenCategory.Outline)
{
var symbols = startSymbols.Where(s => !IsNullOrWhiteSpace(s)).ToArray();
StartSymbols = new StringList(symbols);
if (StartSymbols.Count == 0)
{
StartSymbols.AddRange(_defaultStartSymbols);
}
Priority = TerminalPriority.High;
}
}//method
public override IList <string> GetFirsts()
{
StringList result = new StringList();
result.AddRange(Prefixes);
//we assume that prefix is always optional, so string can start with start-end symbol
foreach (char ch in _startSymbolsFirsts)
{
result.Add(ch.ToString());
}
return(result);
}
//TODO: put into account non-Ascii aplhabets specified by means of Unicode categories!
public override IList <string> GetFirsts()
{
var list = new StringList();
list.AddRange(Prefixes);
foreach (char ch in _allFirstCharsSet)
{
list.Add(ch.ToString());
}
if ((Options & IdOptions.CanStartWithEscape) != 0)
{
list.Add(this.EscapeChar.ToString());
}
return(list);
}
//TODO: put into account non-Ascii aplhabets specified by means of Unicode categories!
public override IList <string> GetFirsts()
{
StringList list = new StringList();
list.AddRange(Prefixes);
if (string.IsNullOrEmpty(AllFirstChars))
{
return(list);
}
char[] chars = AllFirstChars.ToCharArray();
foreach (char ch in chars)
{
list.Add(ch.ToString());
}
if ((Options & IdOptions.CanStartWithEscape) != 0)
{
list.Add(this.EscapeChar.ToString());
}
return(list);
}
