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

org.antlr.v4.runtime.atn.ATNState
The following images show the relation of states and {@link ATNState#transitions} for various grammar constructs.
- Solid edges marked with an ε indicate a required {@link EpsilonTransition}.
- Dashed edges indicate locations where any transition derived from {@link Transition} might appear.
- Dashed nodes are place holders for either a sequence of linked {@link BasicState} states or the inclusion of a block representing a nestedconstruct in one of the forms below.
- Nodes showing multiple outgoing alternatives with a {@code ...} supportany number of alternatives (one or more). Nodes without the {@code ...} onlysupport the exact number of alternatives shown in the diagram.
Basic Blocks

Rule

Block of 1 or more alternatives

Greedy Loops

Greedy Closure: {@code (...)*}

Greedy Positive Closure: {@code (...)+}

Greedy Optional: {@code (...)?}

Non-Greedy Loops

Non-Greedy Closure: {@code (...)*?}

Non-Greedy Positive Closure: {@code (...)+?}

Non-Greedy Optional: {@code (...)??}

  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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    ClassUtils cu = new ClassUtils();
    setup(cu);
    registry.clearForType(JavaCompletionTypes.CUSTOM_TYPE);
    registry.clearForType(JavaCompletionTypes.FIELD);
    registry.clearForType(JavaCompletionTypes.NAME);
    Lexer lexer = new JavaLexer(new ANTLRInputStream(txt));
    CommonTokenStream tokens = new CommonTokenStream(lexer);


    // Create a parser that reads from the scanner
    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();

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  @Test
  public void Process() throws IOException {
    InputStream is = CheckSymbols.class.getResource("/Mson.js")
        .openStream();
    ANTLRInputStream input = new ANTLRInputStream(is);
    MsonLexer lexer = new MsonLexer(input);
//    SymbolASTFactory factory = new SymbolASTFactory();
//    lexer.setTokenFactory(factory);
    CommonTokenStream tokens = new CommonTokenStream(lexer);

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    setup(cu);
    registry.clearForType(JavaCompletionTypes.CUSTOM_TYPE);
    registry.clearForType(JavaCompletionTypes.FIELD);
    registry.clearForType(JavaCompletionTypes.NAME);
    Lexer lexer = new JavaLexer(new ANTLRInputStream(txt));
    CommonTokenStream tokens = new CommonTokenStream(lexer);


    // Create a parser that reads from the scanner
    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();

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        .openStream();
    ANTLRInputStream input = new ANTLRInputStream(is);
    MsonLexer lexer = new MsonLexer(input);
//    SymbolASTFactory factory = new SymbolASTFactory();
//    lexer.setTokenFactory(factory);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    
    MsonParser parser = new MsonParser(tokens);
//    parser.setTokenFactory(factory);
    parser.addErrorListener(new DiagnosticErrorListener());
    parser.getInterpreter().setPredictionMode(

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//    lexer.setTokenFactory(factory);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    
    MsonParser parser = new MsonParser(tokens);
//    parser.setTokenFactory(factory);
    parser.addErrorListener(new DiagnosticErrorListener());
    parser.getInterpreter().setPredictionMode(
        PredictionMode.LL_EXACT_AMBIG_DETECTION);
    parser.setBuildParseTree(true);
    ParseTree tree = parser.mson();
    // show tree in text form

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    ClassUtils cu = new ClassUtils();
    setup(cu);
    registry.clearForType(JavaCompletionTypes.CUSTOM_TYPE);
    registry.clearForType(JavaCompletionTypes.FIELD);
    registry.clearForType(JavaCompletionTypes.NAME);
    Lexer lexer = new JavaLexer(new ANTLRInputStream(txt));
    CommonTokenStream tokens = new CommonTokenStream(lexer);


    // Create a parser that reads from the scanner
    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();

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    // Create a parser that reads from the scanner
    JavaParser parser = new JavaParser(tokens);
    parser.removeErrorListeners();
    
    // start parsing at the compilationUnit rule
    ParserRuleContext t = parser.compilationUnit();
    ParseTreeWalker walker = new ParseTreeWalker();
    List<AutocompleteCandidate> q = new ArrayList<AutocompleteCandidate>();
          
    ImportDeclarationCompletion extractor = new ImportDeclarationCompletion(txt,cur,registry,cps,cu);
    NameBuilder extractor2 = new NameBuilder(registry,cu );

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    isKeywords = false;
  }


  @Override
  public void enterPackage(@NotNull PackageContext ctx) {
    ParserRuleContext prc = ctx.getParent();
    if (!(prc instanceof DomainArrayContext)) {
      return;
    }
    DomainArrayContext dac = (DomainArrayContext) prc;
    DomainHeaderContext dhctx = (DomainHeaderContext) dac.getChild(0);

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   * some reason speed is suffering for you, you can turn off this
   * functionality by simply overriding this method as a blank { }.</p>
   */
  @Override
  public void sync(Parser recognizer) throws RecognitionException {
    ATNState s = recognizer.getInterpreter().atn.states.get(recognizer.getState());
//    System.err.println("sync @ "+s.stateNumber+"="+s.getClass().getSimpleName());
    // If already recovering, don't try to sync
    if (inErrorRecoveryMode(recognizer)) {
      return;
    }


        TokenStream tokens = recognizer.getInputStream();
        int la = tokens.LA(1);


        // try cheaper subset first; might get lucky. seems to shave a wee bit off
        if ( recognizer.getATN().nextTokens(s).contains(la) || la==Token.EOF ) return;


    // Return but don't end recovery. only do that upon valid token match
    if (recognizer.isExpectedToken(la)) {
      return;
    }


    switch (s.getStateType()) {
    case ATNState.BLOCK_START:
    case ATNState.STAR_BLOCK_START:
    case ATNState.PLUS_BLOCK_START:
    case ATNState.STAR_LOOP_ENTRY:
      // report error and recover if possible

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Related Classes of org.antlr.v4.runtime.atn.ATNState

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

Basic Blocks

Rule

Block of 1 or more alternatives

Greedy Loops

Greedy Closure: {@code (...)*}

Greedy Positive Closure: {@code (...)+}

Greedy Optional: {@code (...)?}

Non-Greedy Loops

Non-Greedy Closure: {@code (...)*?}

Non-Greedy Positive Closure: {@code (...)+?}

Non-Greedy Optional: {@code (...)??}

Related Classes of org.antlr.v4.runtime.atn.ATNState