IF...THEN...ELSE 使用 XML [英] IF...THEN...ELSE using XML

问题描述

我有一个程序，它使用 XML 格式的规则为运行时创建可执行代码.我必须使用我自己的方言来定义一些动作和逻辑结构.我有 OR、AND 和 NOT 结构，现在我需要实现 IF..THEN..ELSE.

I have a program that uses XML formatted rules to create executable code for run-time. I have to define some actions and logical constructs using my own dialect. I have OR, AND, and NOT constructs and now I need to implement IF..THEN..ELSE.

我正在尝试提出一种有意义的语法，这是我目前所拥有的:

I'm trying to come up with a syntax that would make sense and here's what I have so far:

<IF id='if-1'>
    <TIME from="5pm" to="9pm" />
</IF>
<THEN id='if-1'>
    <...some actions defined.../>
</THEN>
<ELSE id='if-1'>
    <...other set of actions defined here.../>
</ELSE>

If 对我来说很难读懂，但我没有看到一种更简洁的方式来表示它而不做太多嵌套.有人有建议吗?(此时不使用 XML 不是一种选择 :) )

If looks difficult to read to me, but I don't see a cleaner way to represent this without doing too much nesting. Does anyone have a suggestion? (not using XML is not an option at this point in time :) )

推荐答案

我个人认为 if/then/else 需要以某种方式链接起来.

I personally think that the if/then/else needs to be linked somehow.

<IF something>
    <some actions>
<THEN something>
    <some actions>
</THEN>
<ELSE something>
    <some actions>
</ELSE>
</IF>

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