public void visitAssertStatement(GrAssertStatement assertStatement) {
    final InstructionImpl assertInstruction = startNode(assertStatement);

    final GrExpression assertion = assertStatement.getAssertion();
    if (assertion != null) {
      assertion.accept(this);

      InstructionImpl positiveHead = myHead;

      List<GotoInstruction> negations = collectAndRemoveAllPendingNegations(assertStatement);
      if (!negations.isEmpty()) {
        interruptFlow();
        reduceAllNegationsIntoInstruction(assertStatement, negations);
      }

      GrExpression errorMessage = assertStatement.getErrorMessage();
      if (errorMessage != null) {
        errorMessage.accept(this);
      }
      addNode(new ThrowingInstruction(assertStatement));

      final PsiType type =
          TypesUtil.createTypeByFQClassName(
              CommonClassNames.JAVA_LANG_ASSERTION_ERROR, assertStatement);
      ExceptionInfo info = findCatch(type);
      if (info != null) {
        info.myThrowers.add(myHead);
      } else {
        addPendingEdge(null, myHead);
      }

      myHead = positiveHead;
    }
    finishNode(assertInstruction);
  }
 private static boolean assertStatementsAreEquivalent(
     GrAssertStatement statement1, GrAssertStatement statement2) {
   return expressionsAreEquivalent(statement1.getAssertion(), statement2.getAssertion());
 }