Class MachineProbe

java.lang.Object
org.antlr.analysis.MachineProbe

public class MachineProbe extends Object
  • Field Details

  • Constructor Details

    • MachineProbe

      public MachineProbe(DFA dfa)
  • Method Details

    • getAnyDFAPathToTarget

      List<DFAState> getAnyDFAPathToTarget(DFAState targetState)
    • getAnyDFAPathToTarget

      public List<DFAState> getAnyDFAPathToTarget(DFAState startState, DFAState targetState, Set<DFAState> visited)
    • 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<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].