Package org.antlr.v4.runtime.atn

Examples of org.antlr.v4.runtime.atn.SetTransition

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      Transition transition;
      if (set.getIntervals().size() == 1) {
        Interval interval = set.getIntervals().get(0);
        transition = new RangeTransition(right, interval.a, interval.b);
      } else {
        transition = new SetTransition(right, set);
      }

      left.addTransition(transition);
    }
    associatedAST.atnState = left;
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  @Override
  public Handle charSetLiteral(GrammarAST charSetAST) {
    ATNState left = newState(charSetAST);
    ATNState right = newState(charSetAST);
    IntervalSet set = getSetFromCharSetLiteral(charSetAST);
    left.addTransition(new SetTransition(right, set));
    charSetAST.atnState = left;
    return new Handle(left, right);
  }
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  @ModelElement public TestSetInline expr;
  @ModelElement public CaptureNextTokenType capture;

  public MatchSet(OutputModelFactory factory, GrammarAST ast) {
    super(factory, ast);
    SetTransition st = (SetTransition)ast.atnState.transition(0);
    expr = new TestSetInline(factory, null, st.set);
    Decl d = new TokenTypeDecl(factory, expr.varName);
    factory.getCurrentRuleFunction().addLocalDecl(d);
    capture = new CaptureNextTokenType(factory,expr.varName);
  }
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        else if ( t instanceof ActionTransition ) {
          ActionTransition a = (ActionTransition)t;
          buf.append("-").append(a.toString()).append("->").append(getStateString(t.target)).append('\n');
        }
        else if ( t instanceof SetTransition ) {
          SetTransition st = (SetTransition)t;
          boolean not = st instanceof NotSetTransition;
          if ( g.isLexer() ) {
            buf.append("-").append(not?"~":"").append(st.toString()).append("->").append(getStateString(t.target)).append('\n');
          }
          else {
            buf.append("-").append(not?"~":"").append(st.label().toString(g.getVocabulary())).append("->").append(getStateString(t.target)).append('\n');
          }
        }
        else if ( t instanceof AtomTransition ) {
          AtomTransition a = (AtomTransition)t;
          String label = g.getTokenDisplayName(a.label);
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          else if ( grammar!=null ) label = grammar.getTokenDisplayName(atom.label);
          edgeST.add("label", getEdgeLabel(label));
        }
        else if ( edge instanceof SetTransition ) {
          edgeST = stlib.getInstanceOf("edge");
          SetTransition set = (SetTransition)edge;
          String label = set.label().toString();
          if ( isLexer ) label = set.label().toString(true);
          else if ( grammar!=null ) label = set.label().toString(grammar.getVocabulary());
          if ( edge instanceof NotSetTransition ) label = "~"+label;
          edgeST.add("label", getEdgeLabel(label));
        }
        else if ( edge instanceof RangeTransition ) {
          edgeST = stlib.getInstanceOf("edge");
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          } else {
            Interval matchInterval = matchSet.getIntervals().get(0);
            newTransition = new RangeTransition(blockEndState, matchInterval.a, matchInterval.b);
          }
        } else {
          newTransition = new SetTransition(blockEndState, matchSet);
        }

        decision.transition(interval.a).target.setTransition(0, newTransition);
        for (int j = interval.a + 1; j <= interval.b; j++) {
          Transition removed = decision.removeTransition(interval.a + 1);
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   * {@code (A|B)*} is not the same thing as {@code (A|B|)+}.
   */
  @NotNull
  @Override
  public Handle star(@NotNull GrammarAST starAST, @NotNull Handle elem) {
    StarBlockStartState blkStart = (StarBlockStartState)elem.left;
    BlockEndState blkEnd = (BlockEndState)elem.right;
    preventEpsilonClosureBlocks.add(new Triple<Rule, ATNState, ATNState>(currentRule, blkStart, blkEnd));

    StarLoopEntryState entry = newState(StarLoopEntryState.class, starAST);
    entry.nonGreedy = !((QuantifierAST)starAST).isGreedy();
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  public Handle star(@NotNull GrammarAST starAST, @NotNull Handle elem) {
    StarBlockStartState blkStart = (StarBlockStartState)elem.left;
    BlockEndState blkEnd = (BlockEndState)elem.right;
    preventEpsilonClosureBlocks.add(new Triple<Rule, ATNState, ATNState>(currentRule, blkStart, blkEnd));

    StarLoopEntryState entry = newState(StarLoopEntryState.class, starAST);
    entry.nonGreedy = !((QuantifierAST)starAST).isGreedy();
    atn.defineDecisionState(entry);
    LoopEndState end = newState(LoopEndState.class, starAST);
    StarLoopbackState loop = newState(StarLoopbackState.class, starAST);
    entry.loopBackState = loop;
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    StarLoopEntryState entry = newState(StarLoopEntryState.class, starAST);
    entry.nonGreedy = !((QuantifierAST)starAST).isGreedy();
    atn.defineDecisionState(entry);
    LoopEndState end = newState(LoopEndState.class, starAST);
    StarLoopbackState loop = newState(StarLoopbackState.class, starAST);
    entry.loopBackState = loop;
    end.loopBackState = loop;

    BlockAST blkAST = (BlockAST)starAST.getChild(0);
    if ( ((QuantifierAST)starAST).isGreedy() ) {
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    int n = els.size();
    for (int i = 0; i < n - 1; i++) {  // hook up elements (visit all but last)
      Handle el = els.get(i);
      // if el is of form o-x->o for x in {rule, action, pred, token, ...}
      // and not last in alt
            Transition tr = null;
            if ( el.left.getNumberOfTransitions()==1 ) tr = el.left.transition(0);
            boolean isRuleTrans = tr instanceof RuleTransition;
            if ( el.left.getStateType() == ATNState.BASIC &&
        el.right.getStateType()== ATNState.BASIC &&
        tr!=null && (isRuleTrans && ((RuleTransition)tr).followState == el.right || tr.target == el.right) )
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Related Classes of org.antlr.v4.runtime.atn.SetTransition

  • org.antlr.runtime.ANTLRFileStream
  • org.antlr.runtime.ANTLRStringStream
  • org.antlr.runtime.CharStream
  • org.antlr.runtime.CommonToken
  • org.antlr.runtime.Token
  • org.antlr.runtime.tree.CommonTree
  • org.antlr.runtime.tree.CommonTreeNodeStream
  • org.antlr.runtime.tree.Tree
  • org.antlr.runtime.tree.TreeVisitor
  • org.antlr.runtime.tree.TreeVisitorAction
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