短路问题：user != nil && user.id > book.id && (nil + 1 > 3)

[qiangbro]

public static void main(String[] args) {
    boolean result = (boolean) AviatorEvaluator.execute("user != nil && user.id > book.id && (nil + 1 > 3)");
    System.out.println(result);
}

希望短路并返回false，但是抛了异常：

Exception in thread "main" com.googlecode.aviator.exception.ExpressionRuntimeException: Could not add <Nil, null> with <Long, 1>
	at com.googlecode.aviator.runtime.type.AviatorObject.add(AviatorObject.java:153)
	at com.googlecode.aviator.runtime.type.AviatorNil.add(AviatorNil.java:51)
	at com.googlecode.aviator.lexer.token.OperatorType.eval(OperatorType.java:108)
	at com.googlecode.aviator.runtime.op.OperationRuntime.eval0(OperationRuntime.java:57)
	at com.googlecode.aviator.runtime.op.OperationRuntime.eval(OperationRuntime.java:47)
	at com.googlecode.aviator.code.OptimizeCodeGenerator.executeOperator(OptimizeCodeGenerator.java:221)
	at com.googlecode.aviator.code.OptimizeCodeGenerator.execute(OptimizeCodeGenerator.java:158)
	at com.googlecode.aviator.code.OptimizeCodeGenerator.getResult(OptimizeCodeGenerator.java:361)

[qiangbro]

再来一例

    public static void main(String[] args) {
        String av = "aa == nil || reducer.result[0]";
        boolean result = (boolean) AviatorEvaluator.execute(av);
        System.out.println(result);
    }

希望短路直接返回true，但是抛了异常：

Exception in thread "main" com.googlecode.aviator.exception.ExpressionRuntimeException: Could not find variable reducer.result
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getProperty(AviatorJavaType.java:465)
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getValueFromEnv(AviatorJavaType.java:355)
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getValue(AviatorJavaType.java:338)
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getElement(AviatorJavaType.java:662)
	at AviatorScript_1768217383063_58.execute0(AviatorScript_1768217383063_58:1)
	at com.googlecode.aviator.ClassExpression.executeDirectly(ClassExpression.java:55)
	at com.googlecode.aviator.BaseExpression.execute(BaseExpression.java:268)
	at com.googlecode.aviator.BaseExpression.execute(BaseExpression.java:255)
	at com.googlecode.aviator.AviatorEvaluatorInstance.execute(AviatorEvaluatorInstance.java:1674)
	at com.googlecode.aviator.AviatorEvaluatorInstance.execute(AviatorEvaluatorInstance.java:1689)
	at com.googlecode.aviator.AviatorEvaluatorInstance.execute(AviatorEvaluatorInstance.java:1700)
	at com.googlecode.aviator.AviatorEvaluator.execute(AviatorEvaluator.java:570)
	at com.googlecode.aviator.AviatorEvaluator.execute(AviatorEvaluator.java:591)
	at ltd.light.chain.scheduler.util.SdScriptUtil.main(SdScriptUtil.java:435)
Caused by: java.lang.NullPointerException: reducer
	at com.googlecode.aviator.utils.Reflector.fastGetProperty(Reflector.java:871)
	at com.googlecode.aviator.runtime.type.AviatorJavaType.getProperty(AviatorJavaType.java:455)
	... 13 more