Antlr4.Runtime.Atn.LexerATNSimulator.AddDFAEdge C# (CSharp) Метод

        protected DFAState AddDFAEdge(DFAState from,
									  int t,
									  ATNConfigSet q)
        {
            /* leading to this call, ATNConfigSet.hasSemanticContext is used as a
             * marker indicating dynamic predicate evaluation makes this edge
             * dependent on the specific input sequence, so the static edge in the
             * DFA should be omitted. The target DFAState is still created since
             * execATN has the ability to resynchronize with the DFA state cache
             * following the predicate evaluation step.
             *
             * TJP notes: next time through the DFA, we see a pred again and eval.
             * If that gets us to a previously created (but dangling) DFA
             * state, we can continue in pure DFA mode from there.
             */
            bool suppressEdge = q.hasSemanticContext;
            q.hasSemanticContext = false;

            DFAState to = AddDFAState(q);

            if (suppressEdge)
            {
                return to;
            }

            AddDFAEdge(from, t, to);
            return to;
        }