Package org.antlr.v4.runtime.misc

Examples of org.antlr.v4.runtime.misc.FlexibleHashMap$Entry

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    return h;
  }

  @NotNull
  public Handle _ruleRef(@NotNull GrammarAST node) {
    Rule r = g.getRule(node.getText());
    if ( r==null ) {
      g.tool.errMgr.grammarError(ErrorType.INTERNAL_ERROR, g.fileName, node.getToken(), "Rule "+node.getText()+" undefined");
      return null;
    }
    RuleStartState start = atn.ruleToStartState[r.index];
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    boolean stateReachesStopState = false;
    for (int i=0; i<n; i++) {
      Transition t = s.transition(i);
      if ( t instanceof RuleTransition ) {
        RuleTransition rt = (RuleTransition) t;
        Rule r = g.getRule(rt.ruleIndex);
        if ( rulesVisitedPerRuleCheck.contains((RuleStartState)t.target) ) {
          addRulesToCycle(enclosingRule, r);
        }
        else {
          // must visit if not already visited; mark target, pop when done
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//    System.out.println("setAltAssoc: op " + alt + ": " + t.getText()+", assoc="+assoc);
  }

  @Override
  public void binaryAlt(AltAST originalAltTree, int alt) {
    AltAST altTree = (AltAST)originalAltTree.dupTree();
    String altLabel = altTree.altLabel!=null ? altTree.altLabel.getText() : null;

    String label = null;
    boolean isListLabel = false;
    GrammarAST lrlabel = stripLeftRecursion(altTree);
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    //System.out.println("binaryAlt " + alt + ": " + altText + ", rewrite=" + rewriteText);
  }

  @Override
  public void prefixAlt(AltAST originalAltTree, int alt) {
    AltAST altTree = (AltAST)originalAltTree.dupTree();
    stripAltLabel(altTree);

    int nextPrec = precedence(alt);
    // rewrite e to be e_[prec]
    altTree = addPrecedenceArgToRules(altTree, nextPrec);
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   * {@code (BLOCK (ALT .))} or {@code (BLOCK (ALT 'a') (ALT .))}.
   */
  public static boolean blockHasWildcardAlt(@NotNull GrammarAST block) {
    for (Object alt : block.getChildren()) {
      if ( !(alt instanceof AltAST) ) continue;
      AltAST altAST = (AltAST)alt;
      if ( altAST.getChildCount()==1 || (altAST.getChildCount() == 2 && altAST.getChild(0).getType() == ANTLRParser.ELEMENT_OPTIONS) ) {
        Tree e = altAST.getChild(altAST.getChildCount() - 1);
        if ( e.getType()==ANTLRParser.WILDCARD ) {
          return true;
        }
      }
    }
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    //System.out.println("prefixAlt " + alt + ": " + altText + ", rewrite=" + rewriteText);
  }

  @Override
  public void suffixAlt(AltAST originalAltTree, int alt) {
    AltAST altTree = (AltAST)originalAltTree.dupTree();
    String altLabel = altTree.altLabel!=null ? altTree.altLabel.getText() : null;

    String label = null;
    boolean isListLabel = false;
    GrammarAST lrlabel = stripLeftRecursion(altTree);
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//    System.out.println("suffixAlt " + alt + ": " + altText + ", rewrite=" + rewriteText);
  }

  @Override
  public void otherAlt(AltAST originalAltTree, int alt) {
    AltAST altTree = (AltAST)originalAltTree.dupTree();
    stripAltLabel(altTree);
    String altText = text(altTree);
    String altLabel = altTree.altLabel!=null ? altTree.altLabel.getText() : null;
    LeftRecursiveRuleAltInfo a =
      new LeftRecursiveRuleAltInfo(alt, altText, null, altLabel, false, originalAltTree);
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    end.loopBackState = loop;

    plusAST.atnState = loop;
    epsilon(blkEnd, loop);    // blk can see loop back

    BlockAST blkAST = (BlockAST)plusAST.getChild(0);
    if ( ((QuantifierAST)plusAST).isGreedy() ) {
      if (expectNonGreedy(blkAST)) {
        g.tool.errMgr.grammarError(ErrorType.EXPECTED_NON_GREEDY_WILDCARD_BLOCK, g.fileName, plusAST.getToken(), plusAST.getToken().getText());
      }
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    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() ) {
      if (expectNonGreedy(blkAST)) {
        g.tool.errMgr.grammarError(ErrorType.EXPECTED_NON_GREEDY_WILDCARD_BLOCK, g.fileName, starAST.getToken(), starAST.getToken().getText());
      }
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    AltAST altTree = (AltAST)originalAltTree.dupTree();
    String altLabel = altTree.altLabel!=null ? altTree.altLabel.getText() : null;

    String label = null;
    boolean isListLabel = false;
    GrammarAST lrlabel = stripLeftRecursion(altTree);
    if ( lrlabel!=null ) {
      label = lrlabel.getText();
      isListLabel = lrlabel.getParent().getType() == PLUS_ASSIGN;
      leftRecursiveRuleRefLabels.add(new Pair<GrammarAST,String>(lrlabel,altLabel));
    }

    stripAltLabel(altTree);
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