Now that we had a simple grammar that recognizes sequences of tokens , we needed to find a way to feed tokens to the parser 既然我们已经有了一个可以识别标记序列的简单语法，将需要寻求一种将这些标记提供给语法分析器的方法。
In our game we wanted to have separate parsers for the scripting language and the gui descriptions , since they used different grammar rules 我们希望在游戏中对脚本语言和gui描述使用不同的语法分析器，因为它们使用不同的语法规则。
Xml : : simple provides an intuitive , pure - perl parser for simple xml files , and the sax api is supported by most of the parsing modules Xml : : simple为简单的xml文件提供了一个直观的纯perl语法分析器，而且大多数分析模块都支持sax api 。
In this screen description , the widgets and attributes are parsed by the gui parser , and the button callbacks are interpreted by the script parser 在这个屏幕描述中，窗口小部件和属性由语法分析器进行分析，按钮回调由脚本语法分析器解释。
Elements are allowed as in a lengthy novel with hundreds of pages . a dtd or an xml schema plus a validating parser make a document usable across applications 有了dtd或xml模式，再加上验证语法分析器，就可以使文档在每个应用程序中都可以使用。
However , generally you will access the drivers by a higher level sax facility that will automatically choose the " best " parser available on the system where run 但是，一般使用高级sax设施访问驱动器，该设施自动选择系统上“最佳”的可用语法分析器：
