Eclipse：自定义警告（Rhino 字符串参数）

发布于 2024-11-02 20:44:05 字数 1013 浏览 3 评论 0原文

有没有办法在 Eclipse 中定义自定义警告？如何？

我的动机

我有大量的类通过 Mozilla Rhino 作为 JavaScript 对象公开。我遇到过几个这样的错误：

public void jsFunction_foo(String bar) {
  if (bar != null) {
    ...
  } else {
    ...
  }
}

错误：jsFunction_ 中的字符串参数永远不会为空。如果 JavaScript 调用 foo(null)，则到达的参数是 "null"，而不是 null。巨大的差异。

解决方案是将参数声明为可脚本化，然后将其转换（如果存在）：

public void jsFunction_foo(Scriptable bar) {
  if (bar != null) {
    String barStr = convertToString(bar);
    ...
  } else {
    ...
  }
}

无论如何。我们在 JavaScript 中公开了 50 多个类。我不想手动完成所有这些工作，而是希望使该过程自动化。类似于：

if (function.name.indexOf("jsFunction_") == 0 &&
    function.paramTypes.contains(String.class) &&
    stringParamComparedToNull(function))
  addWarning(function.lineNum, "It doesn't work like that!");

理想情况下，这个自定义警告将在我的团队（甚至 Mozilla Rhino 项目本身）之间共享，这样其他人就不会再犯同样的错误。

对于那些与“null”相比的人来说，一种让 Eclipse 崩溃的方法也不错。咕噜。

原文

Is there a way to define a custom warning in Eclipse? How?

My motivation

I have a Large Number of classes that are exposed as JavaScript objects via Mozilla Rhino. I've run across a couple bugs like this:

public void jsFunction_foo(String bar) {
  if (bar != null) {
    ...
  } else {
    ...
  }
}

The Bug: A String parameter in a jsFunction_ IS NEVER NULL. If the JavaScript calls foo(null), the parameter that arrives is "null", not null. HUGE difference.

The solution is to declare the parameter as Scriptable, and then convert it if present:

public void jsFunction_foo(Scriptable bar) {
  if (bar != null) {
    String barStr = convertToString(bar);
    ...
  } else {
    ...
  }
}

So anyway. We have 50+ classes we expose in JavaScript. Rather than schlepping through them all by hand, I'd like to automate the process. Something like:

if (function.name.indexOf("jsFunction_") == 0 &&
    function.paramTypes.contains(String.class) &&
    stringParamComparedToNull(function))
  addWarning(function.lineNum, "It doesn't work like that!");

Ideally this custom warning would be shared across my team (or even with the Mozilla Rhino project itself) so other folks won't keep making the same mistakes.

A way to crash Eclipse for people that compare to "null" would be good too. Grr.

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