Examples of org.antlr.v4.runtime.misc.NullUsageProcessor

org.antlr.v4.parse.GrammarASTAdaptor
A compile-time validator for correct usage of the {@link NotNull} and{@link Nullable} annotations.
The validation process checks the following items.
- Error: an element is annotated with both {@link NotNull} and {@link Nullable}.
- Error: an method which returns {@code void} is annotated with {@link NotNull} or {@link Nullable}.
- Error: an element with a primitive type is annotated with {@link Nullable}.
- Error: a parameter is annotated with {@link NotNull}, but the method overrides or implements a method where the parameter is annotated {@link Nullable}.
- Error: a method is annotated with {@link Nullable}, but the method overrides or implements a method that is annotated with {@link NotNull}.
- Warning: an element with a primitive type is annotated with {@link NotNull}.
- Warning: a parameter is annotated with {@link NotNull}, but the method overrides or implements a method where the parameter is not annotated.
- Warning: a method is annotated with {@link Nullable}, but the method overrides or implements a method that is not annotated.
In the future, the validation process may be updated to check the following additional items.
- Warning: a parameter is not annotated, but the method overrides or implements a method where the parameter is annotated with {@link NotNull} or {@link Nullable}.
- Warning: a method is not annotated, but the method overrides or implements a method that is annotated with with {@link NotNull} or {@link Nullable}.
@author Sam Harwell


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


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

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    switch ( ebnf ) {
      case ANTLRParser.OPTIONAL :
        c = new OptionalBlock(this, ebnfRoot, alts);
        break;
      case ANTLRParser.CLOSURE :
        c = new StarBlock(this, ebnfRoot, alts);
        break;
      case ANTLRParser.POSITIVE_CLOSURE :
        c = new PlusBlock(this, ebnfRoot, alts);
        break;
    }

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    return c;
  }


  @Override
  public List<SrcOp> getLL1Test(IntervalSet look, GrammarAST blkAST) {
    return list(new TestSetInline(this, blkAST, look));
  }

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        defineImplicitLabel(ID, matchOp); // adds _X
        TokenListDecl l = getTokenListLabelDecl(label);
        rf.addContextDecl(ID.getAltLabel(), l);
      }
      else {
        Decl d = getTokenLabelDecl(label);
        matchOp.labels.add(d);
        rf.addContextDecl(ID.getAltLabel(), d);
      }


//      Decl d = getTokenLabelDecl(label);

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        defineImplicitLabel(setAST, matchOp);
        TokenListDecl l = getTokenListLabelDecl(label);
        rf.addContextDecl(setAST.getAltLabel(), l);
      }
      else {
        Decl d = getTokenLabelDecl(label);
        matchOp.labels.add(d);
        rf.addContextDecl(setAST.getAltLabel(), d);
      }
    }
    if ( controller.needsImplicitLabel(setAST, matchOp) ) defineImplicitLabel(setAST, matchOp);

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  }


  public void reduceBlocksToSets(GrammarAST root) {
    CommonTreeNodeStream nodes = new CommonTreeNodeStream(new GrammarASTAdaptor(), root);
    GrammarASTAdaptor adaptor = new GrammarASTAdaptor();
    BlockSetTransformer transformer = new BlockSetTransformer(nodes, g);
    transformer.setTreeAdaptor(adaptor);
    transformer.downup(root);
  }

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  public Map<Integer, ASSOC> altAssociativity = new HashMap<Integer, ASSOC>();


  public LeftRecursiveRuleAnalyzer(GrammarAST ruleAST,
                   Tool tool, String ruleName, String language)
  {
    super(new CommonTreeNodeStream(new GrammarASTAdaptor(ruleAST.token.getInputStream()), ruleAST));
    this.tool = tool;
    this.ruleName = ruleName;
    this.language = language;
    this.tokenStream = ruleAST.g.tokenStream;
    if (this.tokenStream == null) {

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        tool.log("grammar", "after: "+root.toStringTree());
  }


  public void reduceBlocksToSets(GrammarAST root) {
    CommonTreeNodeStream nodes = new CommonTreeNodeStream(new GrammarASTAdaptor(), root);
    GrammarASTAdaptor adaptor = new GrammarASTAdaptor();
    BlockSetTransformer transformer = new BlockSetTransformer(nodes, g);
    transformer.setTreeAdaptor(adaptor);
    transformer.downup(root);
  }

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     *
     *  Parameter must be a token.
     *  todo: do we want?
     */
    public void expandParameterizedLoops(GrammarAST root) {
        TreeVisitor v = new TreeVisitor(new GrammarASTAdaptor());
        v.visit(root, new TreeVisitorAction() {
            @Override
            public Object pre(Object t) {
                if ( ((GrammarAST)t).getType() == 3 ) {
                    return expandParameterizedLoop((GrammarAST)t);

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    /** Utility visitor that sets grammar ptr in each node */
  public static void setGrammarPtr(final Grammar g, GrammarAST tree) {
    if ( tree==null ) return;
    // ensure each node has pointer to surrounding grammar
    TreeVisitor v = new TreeVisitor(new GrammarASTAdaptor());
    v.visit(tree, new TreeVisitorAction() {
      @Override
      public Object pre(Object t) { ((GrammarAST)t).g = g; return t; }
      @Override
      public Object post(Object t) { return t; }

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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

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