Verilog Translator

java.util.NoSuchElementException: can't look backwards more than one token in this stream
    at org.antlr.runtime.misc.LookaheadStream.LB(LookaheadStream.java:159)
    at org.antlr.runtime.misc.LookaheadStream.LT(LookaheadStream.java:120)
    at org.antlr.runtime.RecognitionException.extractInformationFromTreeNodeStream(RecognitionException.java:144)
    at org.antlr.runtime.RecognitionException.<init>(RecognitionException.java:111)
    at org.antlr.runtime.MismatchedTreeNodeException.<init>(MismatchedTreeNodeException.java:42)
    at org.antlr.runtime.tree.TreeParser.recoverFromMismatchedToken(TreeParser.java:135)
    at org.antlr.runtime.BaseRecognizer.match(BaseRecognizer.java:115)
    at ru.ispras.verilog.parser.grammar.VerilogTreeBuilder.ast_identifier(VerilogTreeBuilder.java:7502)
    at ru.ispras.verilog.parser.grammar.VerilogTreeBuilder.ast_declaration(VerilogTreeBuilder.java:1012)
    at ru.ispras.verilog.parser.grammar.VerilogTreeBuilder.ast_item(VerilogTreeBuilder.java:868)
    at ru.ispras.verilog.parser.grammar.VerilogTreeBuilder.ast_module(VerilogTreeBuilder.java:662)
    at ru.ispras.verilog.parser.grammar.VerilogTreeBuilder.ast_root(VerilogTreeBuilder.java:504)
    at ru.ispras.verilog.parser.grammar.VerilogTreeBuilder.startRule(VerilogTreeBuilder.java:454)
    at ru.ispras.verilog.parser.VerilogFrontend.startBuilder(VerilogFrontend.java:240)
    at ru.ispras.verilog.parser.VerilogFrontend.startBuilder(VerilogFrontend.java:245)
    at ru.ispras.verilog.parser.VerilogFrontend.start(VerilogFrontend.java:256)
    at ru.ispras.verilog.parser.VerilogFrontend.start(VerilogFrontend.java:260)
    at ru.ispras.verilog.parser.VerilogTranslator.start(VerilogTranslator.java:149)
    at ru.ispras.verilog.parser.sample.VerilogPrinter.main(VerilogPrinter.java:46)
    at ru.ispras.verilog.parser.sample.VerilogPrinterTestCase.runTest(VerilogPrinterTestCase.java:46)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)