protected virtual Handle Action(GrammarAST node, ILexerAction lexerAction)
{
ATNState left = NewState(node);
ATNState right = NewState(node);
bool isCtxDependent = false;
int lexerActionIndex = GetLexerActionIndex(lexerAction);
ActionTransition a =
new ActionTransition(right, currentRule.index, lexerActionIndex, isCtxDependent);
left.AddTransition(a);
node.atnState = left;
Handle h = new Handle(left, right);
return h;
}
public override Handle LexerAltCommands(Handle alt, Handle cmds)
{
Handle h = new Handle(alt.left, cmds.right);
Epsilon(alt.right, cmds.left);
return h;
}
public override Handle Rule(GrammarAST ruleAST, string name, Handle blk)
{
ruleCommands.Clear();
return base.Rule(ruleAST, name, blk);
}
public virtual Handle LexerAltCommands([NotNull] Handle alt, [NotNull] Handle cmds)
{
throw new InvalidOperationException("This element is not allowed in parsers.");
}
public virtual Handle ListLabel([NotNull] Handle t)
{
return(t);
}
public virtual Handle RuleRef([NotNull] GrammarAST node)
{
Handle h = _RuleRef(node);
return(h);
}
public virtual Handle Rule([NotNull] GrammarAST ruleAST, [NotNull] string name, [NotNull] Handle blk)
{
Rule r = g.GetRule(name);
RuleStartState start = atn.ruleToStartState[r.index];
Epsilon(start, blk.left);
RuleStopState stop = atn.ruleToStopState[r.index];
Epsilon(blk.right, stop);
Handle h = new Handle(start, stop);
//ATNPrinter ser = new ATNPrinter(g, h.left);
//System.Console.WriteLine(ruleAST.ToStringTree() + ":\n" + ser.AsString());
ruleAST.atnState = start;
return(h);
}