Class MachineProbe


  • public class MachineProbe
    extends Object
    • Constructor Detail

      • MachineProbe

        public MachineProbe​(DFA dfa)
    • Method Detail

      • getEdgeLabels

        public List<IntSet> getEdgeLabels​(DFAState targetState)
        Return a list of edge labels from start state to targetState.
      • getInputSequenceDisplay

        public String getInputSequenceDisplay​(Grammar g,
                                              List<IntSet> labels)
        Given List<IntSet>, return a String with a useful representation of the associated input string. One could show something different for lexers and parsers, for example.
      • getGrammarLocationsForInputSequence

        public List<org.antlr.runtime.Token> getGrammarLocationsForInputSequence​(List<Set<NFAState>> nfaStates,
                                                                                 List<IntSet> labels)
        Given an alternative associated with a DFA state, return the list of tokens (from grammar) associated with path through NFA following the labels sequence. The nfaStates gives the set of NFA states associated with alt that take us from start to stop. One of the NFA states in nfaStates[i] will have an edge intersecting with labels[i].