如果之前没有特定字符，请匹配单词 [英] Match words if there isn't a specific character before

问题描述

我使用正则表达式来执行语法突出显示。要突出显示关键字，我有以下表达式：

字符串syntaxPattern = @"（\ bif \b）|（\ bwhile \b）|（\ bclassdef \ b）| （\bproperties\b）|（\bend\b）|（\bmethods\b）|（\bfunction\b）|（\belse\b）|（\bfor\\ \\ b）" ;;

这里的问题是，如果关键字在评论中，则不应突出显示。换句话说：如果关键字前面有'％'，则不应突出显示。如何为此设置正则表达式？

感谢您的帮助！

解决方案

（^ [^％] ）*（\bif\b）|（\bwhile\b）|（\bclassdef\b）|（\bproperties\b）|（\bend\b）|（\ bmethods\b）|（\bfunction\b）|（\belse\b）|（\bfor\b）

I use regular expressions to perform syntax highlighting. To highlight keywords I have the following expression:

string syntaxPattern = @"(\bif\b)|(\bwhile\b)|(\bclassdef\b)|(\bproperties\b)|(\bend\b)|(\bmethods\b)|(\bfunction\b)|(\belse\b)|(\bfor\b)";

The problem here is that if the keyword is in a comment it shouldn't be highlighted. In other words: If there is a '%' before the keyword it should not be highlighted. How can I set up a regular expression for this?

Thanks for help!

解决方案

(^[^%])*(\bif\b)|(\bwhile\b)|(\bclassdef\b)|(\bproperties\b)|(\bend\b)|(\bmethods\b)|(\bfunction\b)|(\belse\b)|(\bfor\b)

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