Examples of org.antlr.v4.runtime.RuntimeMetaData$DefaultListener

org.antlr.v4.codegen.model.Choice
This class provides a default implementation of {@link Listener} whichresponds to mismatched versions by throwing the provided {@link VersionMismatchException} if the reported version mismatchindicates the versions differ by more than the major and minor version components.
For example, version strings x.y and x.y.z are considered "compatible", and this listener will not throw an exception. Likewise, version strings x.y-SNAPSHOT and x.y.z are considered "compatible" because the major and minor components x.y are the same in each.

For the purposes of this listener, version numbers are assumed to have the form major.minor.patch.revision-suffix, with the individual components defined as follows.
- major is a required non-negative integer, and is equal to {@code 4} for ANTLR 4.
- minor is a required non-negative integer.
- patch is an optional non-negative integer. When patch is omitted, the {@code .} (dot) appearing before it isalso omitted.
- revision is an optional non-negative integer, and may only be included when patch is also included. When revision is omitted, the {@code .} (dot) appearing before it is also omitted.
- suffix is an optional string. When suffix is omitted, the {@code -} (hyphen-minus) appearing before it is alsoomitted.

    if ( !recRuleTemplates.isDefined("recRule") ) {
      tool.errMgr.toolError(ErrorType.MISSING_CODE_GEN_TEMPLATES, "LeftRecursiveRules");
    }


    // use codegen to get correct language templates; that's it though
    CodeGenerator gen = new CodeGenerator(tool, null, language);
    codegenTemplates = gen.getTemplates();
  }

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    blk.ops = ops;
    return blk;
  }


  @Override
  public List<SrcOp> action(ActionAST ast) { return list(new Action(this, ast)); }

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  @Override
  public List<SrcOp> ruleRef(GrammarAST ID, GrammarAST label, GrammarAST args) {
    InvokeRule invokeOp = new InvokeRule(this, ID, label);
    // If no manual label and action refs as token/rule not label, we need to define implicit label
    if ( controller.needsImplicitLabel(ID, invokeOp) ) defineImplicitLabel(ID, invokeOp);
    AddToLabelList listLabelOp = getAddToListOpIfListLabelPresent(invokeOp, label);
    return list(invokeOp, listLabelOp);
  }

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//        TokenListDecl l = getTokenListLabelDecl(label);
//        getCurrentRuleFunction().addContextDecl(ID.getAltLabel(), l);
//      }
    }
    if ( controller.needsImplicitLabel(ID, matchOp) ) defineImplicitLabel(ID, matchOp);
    AddToLabelList listLabelOp = getAddToListOpIfListLabelPresent(matchOp, labelAST);
    return list(matchOp, listLabelOp);
  }

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        matchOp.labels.add(d);
        rf.addContextDecl(setAST.getAltLabel(), d);
      }
    }
    if ( controller.needsImplicitLabel(setAST, matchOp) ) defineImplicitLabel(setAST, matchOp);
    AddToLabelList listLabelOp = getAddToListOpIfListLabelPresent(matchOp, labelAST);
    return list(matchOp, listLabelOp);
  }

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        TokenListDecl l = getTokenListLabelDecl(label);
        getCurrentRuleFunction().addContextDecl(ast.getAltLabel(), l);
      }
    }
    if ( controller.needsImplicitLabel(ast, wild) ) defineImplicitLabel(ast, wild);
    AddToLabelList listLabelOp = getAddToListOpIfListLabelPresent(wild, labelAST);
    return list(wild, listLabelOp);
  }

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    // all labels must be in scope struct in case we exec action out of context
    getCurrentRuleFunction().addContextDecl(ast.getAltLabel(), d);
  }


  public AddToLabelList getAddToListOpIfListLabelPresent(LabeledOp op, GrammarAST label) {
    AddToLabelList labelOp = null;
    if ( label!=null && label.parent.getType()==ANTLRParser.PLUS_ASSIGN ) {
      String listLabel = gen.getTarget().getListLabel(label.getText());
      labelOp = new AddToLabelList(this, listLabel, op.getLabels().get(0));
    }
    return labelOp;
  }

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    return new LL1AltBlock(this, blkAST, alts);
  }


  @Override
  public Choice getComplexChoiceBlock(BlockAST blkAST, List<CodeBlockForAlt> alts) {
    return new AltBlock(this, blkAST, alts);
  }

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  }


  @Override
  public Choice getChoiceBlock(BlockAST blkAST, List<CodeBlockForAlt> alts, GrammarAST labelAST) {
    int decision = ((DecisionState)blkAST.atnState).decision;
    Choice c;
    if ( !g.tool.force_atn && AnalysisPipeline.disjoint(g.decisionLOOK.get(decision)) ) {
      c = getLL1ChoiceBlock(blkAST, alts);
    }
    else {
      c = getComplexChoiceBlock(blkAST, alts);

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  @Override
  public Choice getLL1EBNFBlock(GrammarAST ebnfRoot, List<CodeBlockForAlt> alts) {
    int ebnf = 0;
    if ( ebnfRoot!=null ) ebnf = ebnfRoot.getType();
    Choice c = null;
    switch ( ebnf ) {
      case ANTLRParser.OPTIONAL :
        if ( alts.size()==1 ) c = new LL1OptionalBlockSingleAlt(this, ebnfRoot, alts);
        else c = new LL1OptionalBlock(this, ebnfRoot, alts);
        break;

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