什么将是一个很好的Delphi词法分析器/解析器的Javascript语言文件？ [英] What would be a good Delphi lexer/parser for Javascript language file?

问题描述

背景

我需要能够识别源中的变量和函数，以便通过后续代码来更改代码。我明白，我可能需要使用一个词法分析器来达到这个目的，但是没有使用我发现的词法分析器（ Dyaclexx ）。

I want to be able to parse Javascript source in a Delphi Application. I need to be able to identify variables and functions within the source for the purpose of making changes to the code through later code. I understand that I probably need to use a lexer for this purpose but have not had much luck using the lexer which I found (Dyaclexx).

问题

免费软件或开源的delphi解析器/词法分析器，它已经具有用于Javascript的令牌集，或者可以轻松地修改此目的而不需要太多麻烦？

Is there a suitable freeware or open source delphi parser/lexer which already has token sets for Javascript or could be easily modified for this purpose without too much trouble?

如果没有这样的工具已经可用，那么为了达到这个目的，学习自己的词典的最好方式是什么？

If there isn't such a tool already available then what would be the best way to learn about writing your own lexer for this purpose?

谢谢

推荐答案

对于词法分析，您可以看到 Synedit的源代码为JavaScript荧光笔。 Synedit上下文中的荧光笔是具有特殊钩子的词法分析器，可为编辑器组件提供突出显示。修剪这些钩子并得到一个简单的词法分析器是一件简单的工作。

For the lexer you can see Synedit's source code for the Javascript highlighter. A highlighter in Synedit context is a lexer with special hooks to provide highlighting to the editor component. Trimming those hooks and getting a plain lexer is a trivial job.

此外，Synedit编辑器可以方便地学习如何构建词法分析器，因为它将有助于实时直观地测试词法分析器。您可以在邮件列表中查看演示或询问更多信息。

Also Synedit editor can come handy while learning how to build lexers as it will be a help to visually test your lexers real-time. You can see the demos or ask at the mailing list for more.

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