什么是cppcheck规则文件< pattern>句法？ [英] What is cppcheck rule-file <pattern> syntax?

问题描述

我已经闲逛了一段时间，在任何地方都找不到。我找到了一个显示简单模式的cppcheck规则文件的好例子；

I've poked around for a while, and can't find this anywhere. I have found a nice example of a cppcheck rule-file that shows a simple pattern;

<?xml version="1.0"?>
<rule version="1">
  <pattern>if \( p \) { free \( p \) ; }</pattern>
  <message>
    <id>redundantCondition</id>
    <severity>style</severity>
    <summary>Redundant condition. It is valid to free a NULL pointer.</summary>
  </message>
</rule>

只要所有指针都命名为 p且调用是免费的，这可以很好地工作'。如何更改 p以匹配任何标识符？如何检查免费或删除？该模式是grep / awk / sed模式吗？

Which works nicely, as long as all the pointers are named 'p' and the call is 'free'. How do I change 'p' to match any identifier? How do I check for "'free' or 'delete'"? Is the pattern a grep/awk/sed pattern?

推荐答案

我是Cppcheck开发人员。

I am a Cppcheck developer.

Cppcheck使用 PCRE 。因此，请使用遵循Perl规则的正则表达式。

Cppcheck uses PCRE. So use a regular expression that follows the Perl rules.

我不太擅长Perl正则表达式，因此我无法回答如何/是否可以匹配任何标识符（因为它应该被匹配两次）。

I'm not really good at Perl regular expressions so I can't answer how/if you can match any identifier (since it should be matched twice).

..希望至少能有所帮助。

.. hope that helps a little at least.

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