Examples of org.antlr.v4.runtime.RecognitionException

org.antlr.v4.runtime.RecognitionException
The root of the ANTLR exception hierarchy. In general, ANTLR tracks just 3 kinds of errors: prediction errors, failed predicate errors, and mismatched input errors. In each case, the parser knows where it is in the input, where it is in the ATN, the rule invocation stack, and what kind of problem occurred.

        .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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    public ANTLRErrorStrategy createErrorStrategy() {
        return new BailErrorStrategy() {
            private void bail(Parser recognizer, Exception exc, String additionalHint)
                        throws ParseCancellationException
            {
                RecognitionException re = (RecognitionException)exc.getCause();
                int offendingState = re.getOffendingState();
                Token offendingToken = re.getOffendingToken();
                int offendingTokenType = offendingToken.getType();


                String msg = getErrorMessage(offendingState, offendingTokenType);


                StringBuilder sb = new StringBuilder();

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            emitMappingForException(sb, situations, i, exc, query, message, forSpecificToken);
        }
    }


    private void emitMappingForException(StringBuilder sb, Map<ErrorSituation,Integer> situations, int i, ParseCancellationException exc, String query, String message, boolean forSpecificToken) {
        RecognitionException re = (RecognitionException)exc.getCause();
        int offendingState = re.getOffendingState();
        Integer offendingToken = null;
        if (forSpecificToken) {
            offendingToken = re.getOffendingToken().getType();
        }
        if (situations.containsKey(new ErrorSituation(offendingState, offendingToken))) {
            int j = situations.get(new ErrorSituation(offendingState, offendingToken));
            String thatMessage = (String)errorExamples()[j][1];
            if (! Objects.equals(message, thatMessage)) {

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      @NotNull InputMismatchException e) {
    String msg = "mismatched input "
        + getTokenErrorDisplay(e.getOffendingToken())
        + " expecting one of "
        + e.getExpectedTokens().toString(recognizer.getTokenNames());
    RecognitionException ex = new RecognitionException(msg, recognizer,
        recognizer.getInputStream(), recognizer.getContext());
    ex.initCause(e);
    throw ex;
  }

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    Token t = recognizer.getCurrentToken();
    IntervalSet expecting = getExpectedTokens(recognizer);
    String msg = "missing "
        + expecting.toString(recognizer.getTokenNames()) + " at "
        + getTokenErrorDisplay(t);
    throw new RecognitionException(msg, recognizer,
        recognizer.getInputStream(), recognizer.getContext());
  }

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    beginErrorCondition(recognizer);
    Token t = recognizer.getCurrentToken();
    IntervalSet expecting = getExpectedTokens(recognizer);
    String msg = "unwanted token " + getTokenErrorDisplay(t) + " expected "
        + expecting.toString(recognizer.getTokenNames());
    throw new RecognitionException(msg, recognizer,
        recognizer.getInputStream(), recognizer.getContext());
  }

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org.antlr.runtime.ANTLRFileStream

org.antlr.runtime.ANTLRStringStream

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org.antlr.runtime.CommonToken

org.antlr.runtime.tree.CommonTree

org.antlr.runtime.tree.CommonTreeNodeStream

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