private void Parse(string dec, DecGrammar g)
{
List <ProductionEntry> entries = new List <ProductionEntry>();
int index = 0;
while (index < dec.Length)
{
bool isToken = true;
dec.ReadWhile(ref index, c => " \t".Contains(c));
if (index >= dec.Length)
{
break;
}
string entry = dec.ReadUntil(ref index, c => " \t".Contains(c) ||
((index > 0 && dec[index - 1] == '{') && (index == 1 || (" \t".Contains(dec[index - 2]) && !"\'\\".Contains(dec[index - 2])))));
if (HasAction)
{
HasAction = false;
var marker = new MarkerNonTerminal(g, "{" + _actionString + "}");
entries.Add(marker);
g.AddNonTerminal(marker);
}
parse : switch (entry[0])
{
case '\\' :
entry = entry.Substring(1);
break;
case '\'':
entry = entry[1..^ 1];
public Production(NonTerminal lhs, DecGrammar g, string dec)
{
Lhs = lhs;
string[] split = dec.Split(" ");
if (split.Length == 0 || dec == "ε")
{
IsEmpty = true;
Rhs = new ProductionEntry[] { };
}
else
{
Parse(dec, g);
}
}
public NonTerminal(DecGrammar g, string tag, params string[] productions) : base('/' + tag)
{
_grammar = g;
Tag = tag;
productionStrings = productions;
}
public MarkerNonTerminal(DecGrammar g, string actionString)
: base(g, GrammarConstants.MarkerChar + actionString, actionString)
{
}